Merge pull request #141 from zhao-shihan/master

Add CMake options INDICATORS_INSTALL and INDICATORS_PACKAGE

.appveyor.yml

@@ -0,0 +1,16 @@
+environment:
+  CONAN_RUN_TESTS: True
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      PATH: C:\\Python37;C:\\Python37\Scripts;C:\Users\appveyor\AppData\Roaming\Python\Python37\Scripts;%PATH%
+    # - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu
+    #   PATH: /home/appveyor/.local/bin:$PATH
+    # - APPVEYOR_BUILD_WORKER_IMAGE: macOS
+
+install:
+  - python --version
+  - python -m pip install conan --upgrade --user
+  - conan user
+
+build_script:
+  - conan create .

.travis.yml

@@ -61,5 +61,5 @@ matrix:
 script:
     - if [[ "$CXX" == clang* ]]; then export CXXFLAGS="-stdlib=libc++"; fi
     - mkdir build && cd build
-    - cmake -DDEMO=ON -DSAMPLES=ON ..
+    - cmake -DINDICATORS_DEMO=ON -DINDICATORS_SAMPLES=ON ..
     - make

CMakeLists.txt

@@ -1,44 +1,111 @@
 cmake_minimum_required(VERSION 3.8)
-project(indica VERSION 1.0.0 LANGUAGES CXX)
-option(INDICA_BUILD_TESTS OFF)
-option(SAMPLES "Build Samples" OFF)
-option(DEMO "Build Demo" OFF)
+
+if(NOT DEFINED PROJECT_NAME)
+  set(INDICATORS_IS_TOP_LEVEL ON)
+else()
+  set(INDICATORS_IS_TOP_LEVEL OFF)
+endif()
+
+if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.12")
+  project(indicators VERSION 2.3.0 LANGUAGES CXX
+    HOMEPAGE_URL "https://github.com/p-ranav/indicators"
+    DESCRIPTION "Activity Indicators for Modern C++")
+elseif(CMAKE_VERSION VERSION_GREATER_EQUAL "3.9")
+  project(indicators VERSION 2.3.0 LANGUAGES CXX
+    DESCRIPTION "Activity Indicators for Modern C++")
+else()
+  project(indicators VERSION 2.3.0 LANGUAGES CXX)
+endif()
+
+if(EXISTS "${CMAKE_BINARY_DIR}/conanbuildinfo.cmake")
+    include("${CMAKE_BINARY_DIR}/conanbuildinfo.cmake")
+    conan_basic_setup()
+endif()
+
+option(INDICATORS_INSTALL "Include an install target" ${INDICATORS_IS_TOP_LEVEL})
+option(INDICATORS_PACKAGE "Include package targets" ${INDICATORS_IS_TOP_LEVEL})
+option(INDICATORS_BUILD_TESTS "Build indicators tests + enable CTest")
+option(INDICATORS_SAMPLES "Build indicators samples")
+option(INDICATORS_DEMO "Build indicators demo" OFF)
 
 include(CMakePackageConfigHelpers)
 include(GNUInstallDirs)
 
 find_package(Threads REQUIRED)
 
-add_library(indica INTERFACE)
-add_library(indica::indica ALIAS indica)
+add_library(indicators INTERFACE)
+add_library(indicators::indicators ALIAS indicators)
 
-target_compile_features(indica INTERFACE cxx_std_11)
-target_include_directories(indica INTERFACE
+target_compile_features(indicators INTERFACE cxx_std_11)
+target_include_directories(indicators INTERFACE
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>)
-target_link_libraries(indica INTERFACE Threads::Threads)
+target_link_libraries(indicators INTERFACE Threads::Threads)
 
-
-if( DEMO )
-    add_subdirectory(demo)
+if(INDICATORS_DEMO)
+  add_subdirectory(demo)
 endif()
 
-if( SAMPLES )
-    add_subdirectory(samples)
+if(INDICATORS_SAMPLES)
+  add_subdirectory(samples)
 endif()
 
-configure_package_config_file(indicaConfig.cmake.in
-  ${CMAKE_CURRENT_BINARY_DIR}/indicaConfig.cmake
-  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indica)
+if(INDICATORS_INSTALL)
+  configure_package_config_file(indicatorsConfig.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfig.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
+  write_basic_package_version_file(indicatorsConfigVersion.cmake
+                                   COMPATIBILITY AnyNewerVersion)
 
-install(TARGETS indica EXPORT indicaTargets)
-install(EXPORT indicaTargets
-        FILE indicaTargets.cmake
-        NAMESPACE indica::
-        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indica)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/indicaConfig.cmake
-        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indica)
-install(DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/include/indicators
-        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-        USE_SOURCE_PERMISSIONS
-        PATTERN "*.hpp")
+  configure_file(indicators.pc.in indicators.pc @ONLY)
+
+  install(TARGETS indicators EXPORT indicatorsTargets)
+  install(EXPORT indicatorsTargets
+          FILE indicatorsTargets.cmake
+          NAMESPACE indicators::
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfig.cmake
+                ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfigVersion.cmake
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/indicators.pc
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+  install(DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/include/indicators
+          DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+          USE_SOURCE_PERMISSIONS
+          PATTERN "*.hpp")
+  install(FILES LICENSE LICENSE.termcolor
+          DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/licenses/indicators)
+endif()
+
+if(INDICATORS_PACKAGE)
+  if(EXISTS "${PROJECT_SOURCE_DIR}/.gitignore")
+    # Simple glob to regex conversion (.gitignore => CPACK_SOURCE_IGNORE_FILES)
+    file(READ ".gitignore" DOT_GITIGNORE)
+    string(REPLACE ";" "RANDOMSEQUENCE" DOT_GITIGNORE "${DOT_GITIGNORE}")
+    string(REPLACE "\n" ";" DOT_GITIGNORE "${DOT_GITIGNORE}")
+    string(REPLACE "RANDOMSEQUENCE" "\\;" DOT_GITIGNORE "${DOT_GITIGNORE}")
+    foreach(IGNORE_LINE ${DOT_GITIGNORE})
+      if(NOT IGNORE_LINE OR IGNORE_LINE MATCHES "^#")
+        continue()
+      endif()
+      string(REPLACE "\\" "\\\\" IGNORE_LINE "${IGNORE_LINE}")
+      string(REPLACE "." "\\\\." IGNORE_LINE "${IGNORE_LINE}")
+      string(REPLACE "*" ".*" IGNORE_LINE "${IGNORE_LINE}")
+      string(REPLACE "+" "\\\\+" IGNORE_LINE "${IGNORE_LINE}")
+      list(APPEND CPACK_SOURCE_IGNORE_FILES "${IGNORE_LINE}")
+    endforeach()
+  endif()
+
+  # extra ignored files
+  list(APPEND CPACK_SOURCE_IGNORE_FILES
+    .editorconfig
+    .git
+    .gitignore
+    .travis.yml
+    .appveyor.yml
+  )
+  set(CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION}")
+  set(CPACK_GENERATOR "TGZ;TXZ")
+  set(CPACK_SOURCE_GENERATOR "TGZ;TXZ")
+  include(CPack)
+endif()

clang-format.bash

@@ -1,2 +1,2 @@
 #!/usr/bin/env bash
-find ./include ./demo/ ./samples/ -type f \( -iname \*.cpp -o -iname \*.hpp \) | xargs clang-format -style="{ColumnLimit : 100}" -i
+find ./include ./demo/ ./samples/ ./single_include -type f \( -iname \*.cpp -o -iname \*.hpp \) | xargs clang-format -style="{ColumnLimit : 100}" -i

conanfile.py

@@ -0,0 +1,78 @@
+from conans import CMake, ConanFile, tools
+from conans.errors import ConanException
+from contextlib import contextmanager
+import os
+
+
+class IndicatorsConan(ConanFile):
+    name = "indicators"
+    description = "Activity Indicators for Modern C++"
+    topics = ("indicators", "progress", "activity", "indicator", "header-only", "c++11")
+    homepage = "https://github.com/p-ranav/indicators"
+    url = "https://github.com/p-ranav/indicators"
+    license = ("MIT", "BSD-3-Clause")
+    exports_sources = "demo/**", "include/**", "samples/**", "CMakeLists.txt", "LICENSE*", \
+                      "indicators.pc.in", "indicatorsConfig.cmake.in", "README*", "img/**"
+    exports = "LICENSE"
+    no_copy_source = True
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "cmake"
+
+    def set_version(self):
+        import re
+        m = re.search(r"project\(.*VERSION ([0-9a-zA-Z.-]+)[ )]",
+                      open(os.path.join(self.recipe_folder, "CMakeLists.txt")).read())
+        if not m:
+            raise ConanException("Could not extract version from CMakeLists.txt")
+        self.version = m.group(1)
+
+    _cmake = None
+
+    def _configure_cmake(self):
+        if self._cmake:
+            return self._cmake
+        generator = None
+        if self.settings.compiler == "Visual Studio":
+            generator = "NMake Makefiles"
+        self._cmake = CMake(self, generator=generator)
+        if tools.get_env("CONAN_RUN_TESTS", default=False):
+            self._cmake.definitions["INDICATORS_DEMO"] = True
+            self._cmake.definitions["INDICATORS_SAMPLES"] = True
+        self._cmake.configure()
+        return self._cmake
+
+    @property
+    def _test_programs(self):
+        programs = []
+        import re
+        for subdir in ("demo", "samples", ):
+            for match in re.finditer(r"add_executable\((\S+)",
+                                     open(os.path.join(self.source_folder, subdir, "CMakeLists.txt")).read()):
+                programs.append(os.path.join(self.build_folder, "bin", match.group(1)))
+        return programs
+
+    @contextmanager
+    def _build_context(self):
+        with tools.vcvars(self.settings) if self.settings.compiler == "Visual Studio" else tools.no_op():
+            yield
+
+    def build(self):
+        with self._build_context():
+            cmake = self._configure_cmake()
+            cmake.build()
+            cmake.build(target="package_source")
+            # if tools.get_env("CONAN_RUN_TESTS", default=False):
+            #     for program in self._test_programs:
+            #         self.output.info("Running program '{}'".format(program))
+            #         self.run(program, run_environment=True)
+
+    def package(self):
+        with self._build_context():
+            cmake = self._configure_cmake()
+            cmake.install()
+
+    def package_id(self):
+        self.info.header_only()
+
+    def package_info(self):
+        self.cpp_info.includedirs.append(os.path.join("include", "indicators"))

demo/CMakeLists.txt

@@ -1,2 +1,2 @@
 add_executable(demo demo.cpp)
-target_link_libraries(demo PRIVATE indica::indica)
+target_link_libraries(demo PRIVATE indicators::indicators)

demo/demo.cpp

@@ -1,24 +1,27 @@
+#include <indicators/cursor_control.hpp>
 #include <indicators/progress_bar.hpp>
 #include <indicators/progress_spinner.hpp>
 #include <vector>
 
 int main() {
+  using namespace indicators;
 
   // Hide cursor
-  std::cout << "\e[?25l";
+  show_console_cursor(false);
 
   {
     //
     // PROGRESS BAR 1
     //
-    indicators::ProgressBar p;
-    p.set_bar_width(50);
-    p.start_bar_with("[");
-    p.fill_bar_progress_with("■");
-    p.lead_bar_progress_with("■");
-    p.fill_bar_remainder_with(" ");
-    p.end_bar_with(" ]");
-    p.set_foreground_color(indicators::Color::YELLOW);
+    indicators::ProgressBar p{
+        option::BarWidth{50},
+        option::Start{"["},
+        option::Fill{"■"},
+        option::Lead{"■"},
+        option::Remainder{" "},
+        option::End{" ]"},
+        option::ForegroundColor{indicators::Color::yellow},
+        option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
 
     std::atomic<size_t> index{0};
     std::vector<std::string> status_text = {"Rocket.exe is not responding",
@@ -35,7 +38,7 @@ int main() {
       while (true) {
         if (p.is_completed())
           break;
-        p.set_postfix_text(status_text[index % status_text.size()]);
+        p.set_option(option::PostfixText{status_text[index % status_text.size()]});
         p.set_progress(index * 10);
         index += 1;
         std::this_thread::sleep_for(std::chrono::milliseconds(600));
@@ -50,20 +53,23 @@ int main() {
     // PROGRESS BAR 2
     //
     indicators::ProgressBar p;
-    p.set_bar_width(40);
-    p.set_prefix_text("Reading package list... ");
-    p.start_bar_with("");
-    p.fill_bar_progress_with("");
-    p.lead_bar_progress_with("");
-    p.fill_bar_remainder_with("");
-    p.end_bar_with("");
-    p.set_foreground_color(indicators::Color::WHITE);
-    p.hide_percentage();
+    p.set_option(option::BarWidth{0});
+    p.set_option(option::PrefixText{"Reading package list... "});
+    p.set_option(option::Start{""});
+    p.set_option(option::Fill{""});
+    p.set_option(option::Lead{""});
+    p.set_option(option::Remainder{""});
+    p.set_option(option::End{""});
+    p.set_option(option::ForegroundColor{indicators::Color::white});
+    p.set_option(option::ShowPercentage{false});
+    p.set_option(
+        option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
     auto job = [&p]() {
       while (true) {
-        p.set_prefix_text("Reading package list... " + std::to_string(p.current()) + "% ");
+        p.set_option(
+            option::PrefixText{"Reading package list... " + std::to_string(p.current()) + "% "});
         if (p.current() + 2 >= 100)
-          p.set_prefix_text("Reading package list... Done");
+          p.set_option(option::PrefixText{"Reading package list... Done"});
         p.tick();
         if (p.is_completed()) {
           break;
@@ -80,25 +86,27 @@ int main() {
     // PROGRESS BAR 3
     //
     indicators::ProgressBar p;
-    p.set_bar_width(50);
-    p.start_bar_with("[");
-    p.fill_bar_progress_with("=");
-    p.lead_bar_progress_with(">");
-    p.fill_bar_remainder_with(" ");
-    p.end_bar_with("]");
-    p.set_postfix_text("Getting started");
-    p.set_foreground_color(indicators::Color::GREEN);
+    p.set_option(option::BarWidth{50});
+    p.set_option(option::Start{"["});
+    p.set_option(option::Fill{"="});
+    p.set_option(option::Lead{">"});
+    p.set_option(option::Remainder{" "});
+    p.set_option(option::End{"]"});
+    p.set_option(option::PostfixText{"Getting started"});
+    p.set_option(option::ForegroundColor{indicators::Color::green});
+    p.set_option(
+        option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
     auto job = [&p]() {
       while (true) {
         auto ticks = p.current();
         if (ticks > 20 && ticks < 50)
-          p.set_postfix_text("Delaying the inevitable");
+          p.set_option(option::PostfixText{"Delaying the inevitable"});
         else if (ticks > 50 && ticks < 80)
-          p.set_postfix_text("Crying quietly");
+          p.set_option(option::PostfixText{"Crying quietly"});
         else if (ticks > 80 && ticks < 98)
-          p.set_postfix_text("Almost there");
+          p.set_option(option::PostfixText{"Almost there"});
         else if (ticks >= 98)
-          p.set_postfix_text("Done");
+          p.set_option(option::PostfixText{"Done"});
         p.tick();
         if (p.is_completed())
           break;
@@ -115,32 +123,34 @@ int main() {
     //
     std::vector<std::string> lead_spinner{"⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"};
     indicators::ProgressBar p4;
-    p4.set_bar_width(40);
-    p4.start_bar_with("");
-    p4.fill_bar_progress_with("⠸");
-    p4.lead_bar_progress_with("");
-    p4.fill_bar_remainder_with(" ");
-    p4.end_bar_with("");
-    p4.set_foreground_color(indicators::Color::CYAN);
-    p4.set_postfix_text("Restoring system state");
-    p4.hide_percentage();
+    p4.set_option(option::BarWidth{40});
+    p4.set_option(option::Start{""});
+    p4.set_option(option::Fill{"⠸"});
+    p4.set_option(option::Lead{""});
+    p4.set_option(option::Remainder{" "});
+    p4.set_option(option::End{""});
+    p4.set_option(option::ForegroundColor{indicators::Color::cyan});
+    p4.set_option(option::PostfixText{"Restoring system state"});
+    p4.set_option(option::ShowPercentage{false});
+    p4.set_option(
+        option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
     std::atomic<size_t> index4{0};
     auto job4 = [&p4, &index4, &lead_spinner]() {
       while (true) {
-        p4.set_prefix_text("{ " + std::to_string(p4.current()) + "% } ");
-        p4.lead_bar_progress_with(lead_spinner[index4 % lead_spinner.size()]);
+        p4.set_option(option::PrefixText{"{ " + std::to_string(p4.current()) + "% } "});
+        p4.set_option(option::Lead{lead_spinner[index4 % lead_spinner.size()]});
         index4 += 1;
         if (p4.current() + 2 >= 100) {
           std::cout << std::endl;
-          p4.set_foreground_color(indicators::Color::RED);
-          p4.set_prefix_text("{ ERROR }");
-          p4.start_bar_with("");
-          p4.fill_bar_progress_with("");
-          p4.lead_bar_progress_with("");
-          p4.fill_bar_remainder_with("");
-          p4.end_bar_with("");
-          p4.show_percentage();
-          p4.set_postfix_text("Failed to restore system");
+          p4.set_option(option::ForegroundColor{indicators::Color::red});
+          p4.set_option(option::PrefixText{"{ ERROR }"});
+          p4.set_option(option::BarWidth{0});
+          p4.set_option(option::Start{});
+          p4.set_option(option::Fill{});
+          p4.set_option(option::Lead{});
+          p4.set_option(option::Remainder{});
+          p4.set_option(option::ShowPercentage{true});
+          p4.set_option(option::PostfixText{"Failed to restore system"});
           p4.mark_as_completed();
           break;
         }
@@ -157,24 +167,22 @@ int main() {
       //
       // GOING BACKWARDS
       //
-      indicators::ProgressBar p;
-      p.set_bar_width(50);
-      p.start_bar_with("[");
-      p.fill_bar_progress_with("■");
-      p.lead_bar_progress_with("■");
-      p.fill_bar_remainder_with("-");
-      p.end_bar_with("]");
-      p.set_progress(100);
-      p.set_foreground_color(indicators::Color::WHITE);
-      p.set_postfix_text("Reverting system restore");
-      std::atomic<size_t> progress{100};
-      auto job = [&p, &progress]() {
+      indicators::ProgressBar p{
+          option::BarWidth{50},
+          option::ProgressType{ProgressType::decremental},
+          option::Start{"["},
+          option::Fill{"■"},
+          option::Lead{"■"},
+          option::Remainder{"-"},
+          option::End{"]"},
+          option::ForegroundColor{indicators::Color::white},
+          option::PostfixText{"Reverting system restore"},
+          option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
+      auto job = [&p]() {
         while (true) {
-          progress -= 1;
-          p.set_progress(progress);
-          if (progress == 0) {
-            p.set_postfix_text("Revert complete!");
-            p.mark_as_completed();
+          p.tick();
+          if (p.is_completed()) {
+            p.set_option(option::PostfixText{"Revert complete!"});
             break;
           }
           std::this_thread::sleep_for(std::chrono::milliseconds(60));
@@ -189,19 +197,20 @@ int main() {
     //
     // PROGRESS BAR 5
     //
-    indicators::ProgressSpinner p;
-    p.set_prefix_text("");
-    p.set_postfix_text("Checking credentials");
-    p.set_foreground_color(indicators::Color::YELLOW);
-    p.set_spinner_states({"⠈", "⠐", "⠠", "⢀", "⡀", "⠄", "⠂", "⠁"});
+    indicators::ProgressSpinner p{
+        option::PrefixText{""}, option::PostfixText{"Checking credentials"},
+        option::ForegroundColor{indicators::Color::yellow},
+        option::SpinnerStates{std::vector<std::string>{"⠈", "⠐", "⠠", "⢀", "⡀", "⠄", "⠂", "⠁"}},
+        option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
+
     auto job = [&p]() {
       while (true) {
         if (p.is_completed()) {
-          p.set_foreground_color(indicators::Color::GREEN);
-          p.set_prefix_text("✔");
-          p.hide_spinner();
-          p.hide_percentage();
-          p.set_postfix_text("Authenticated!");
+          p.set_option(option::ForegroundColor{indicators::Color::green});
+          p.set_option(option::PrefixText{"✔"});
+          p.set_option(option::ShowSpinner{false});
+          p.set_option(option::ShowPercentage{false});
+          p.set_option(option::PostfixText{"Authenticated!"});
           p.mark_as_completed();
           break;
         } else
@@ -218,70 +227,72 @@ int main() {
     //
     // PROGRESS BAR 6
     //
-    indicators::ProgressSpinner p;
-    p.set_prefix_text(" - ");
-    p.set_postfix_text("Searching for the Moon");
-    p.set_foreground_color(indicators::Color::WHITE);
-    p.set_spinner_states({"▖", "▘", "▝", "▗"});
-    p.hide_percentage();
+    indicators::ProgressSpinner p{
+        option::PrefixText{" - "},
+        option::PostfixText{"Searching for the Moon"},
+        option::ForegroundColor{indicators::Color::white},
+        option::ShowPercentage{false},
+        option::SpinnerStates{std::vector<std::string>{"▖", "▘", "▝", "▗"}},
+        option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
     auto job = [&p]() {
       while (true) {
         auto current = p.current();
         if (current == 24) {
-          p.set_prefix_text(" - ✔");
-          p.hide_spinner();
+          p.set_option(option::PrefixText{" - ✔"});
+          p.set_option(option::ShowSpinner{false});
         } else if (current == 25) {
           std::cout << std::endl;
-          p.show_spinner();
-          p.set_prefix_text(" - ");
-          p.set_postfix_text("Contacting Kerbal headquarters");
+          p.set_option(option::ShowSpinner{true});
+          p.set_option(option::PrefixText{" - "});
+          p.set_option(option::PostfixText{"Contacting Kerbal headquarters"});
         } else if (current == 49) {
-          p.set_prefix_text(" - ✔");
-          p.hide_spinner();
+          p.set_option(option::PrefixText{" - ✔"});
+          p.set_option(option::ShowSpinner{false});
         } else if (current == 50) {
           std::cout << std::endl;
-          p.show_spinner();
-          p.set_prefix_text(" - ");
-          p.set_postfix_text("Designing spaceship");
+          p.set_option(option::ShowSpinner{true});
+          p.set_option(option::PrefixText{" - "});
+          p.set_option(option::PostfixText{"Designing spaceship"});
         } else if (current == 74) {
-          p.set_prefix_text(" - ✔");
-          p.hide_spinner();
+          p.set_option(option::PrefixText{" - ✔"});
+          p.set_option(option::ShowSpinner{false});
         } else if (current == 75) {
           std::cout << std::endl;
-          p.show_spinner();
-          p.set_prefix_text(" - ");
-          p.set_postfix_text("Launching rocket");
+          p.set_option(option::ShowSpinner{true});
+          p.set_option(option::PrefixText{" - "});
+          p.set_option(option::PostfixText{"Launching rocket"});
         } else if (current == 95) {
-          p.set_prefix_text(" - ✔");
-          p.hide_spinner();
+          p.set_option(option::PrefixText{" - ✔"});
+          p.set_option(option::ShowSpinner{false});
         } else if (current == 99) {
           std::cout << std::endl;
           //
           // NESTED PROGRESS BAR
           //
-          indicators::ProgressBar p2;
-          p2.set_bar_width(30);
-          p2.set_prefix_text(" - ");
-          p2.start_bar_with("🌎");
-          p2.fill_bar_progress_with("·");
-          p2.lead_bar_progress_with("🚀");
-          p2.fill_bar_remainder_with(" ");
-          p2.end_bar_with("🌑");
-          p2.set_postfix_text("Achieved low-Earth orbit");
-          p2.set_foreground_color(indicators::Color::WHITE);
+          indicators::ProgressBar p2{
+              option::BarWidth{30},
+              option::PrefixText{" - "},
+              option::Start{"🌎"},
+              option::Fill{"·"},
+              option::Lead{"🚀"},
+              option::Remainder{" "},
+              option::End{"🌑"},
+              option::PostfixText{"Achieved low-Earth orbit"},
+              option::ForegroundColor{indicators::Color::white},
+              option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
           std::vector<std::string> ship_trail{"⠁", "⠂", "⠄", "⡀", "⢀", "⠠", "⠐", "⠈"};
           std::atomic<int> ship_trail_index{0};
           auto job2 = [&p2, &ship_trail_index, &ship_trail]() {
             while (true) {
               auto ticks = p2.current();
               if (ticks > 20 && ticks < 50)
-                p2.set_postfix_text("Switching to trans-lunar trajectory");
+                p2.set_option(option::PostfixText{"Switching to trans-lunar trajectory"});
               else if (ticks > 50 && ticks < 80)
-                p2.set_postfix_text("Transferred to Lunar lander");
+                p2.set_option(option::PostfixText{"Transferred to Lunar lander"});
               else if (ticks > 80 && ticks < 98)
-                p2.set_postfix_text("Almost there");
+                p2.set_option(option::PostfixText{"Almost there"});
               else if (ticks >= 98)
-                p2.set_postfix_text("Landed on the Moon");
+                p2.set_option(option::PostfixText{"Landed on the Moon"});
               p2.tick();
               ship_trail_index += 1;
               if (p2.is_completed())
@@ -291,7 +302,7 @@ int main() {
           };
           std::thread thread2(job2);
           thread2.join();
-          p.set_postfix_text("Mission successful!");
+          p.set_option(indicators::option::PostfixText{"Mission successful!"});
           p.mark_as_completed();
           break;
         }
@@ -306,7 +317,7 @@ int main() {
   }
 
   // Show cursor
-  std::cout << "\e[?25h";
+  show_console_cursor(true);
 
   return 0;
 }

include/indicators/block_progress_bar.hpp

@@ -1,248 +1,292 @@
-/*
-Activity Indicators for Modern C++
-https://github.com/p-ranav/indicators
 
-Licensed under the MIT License <http://opensource.org/licenses/MIT>.
-SPDX-License-Identifier: MIT
-Copyright (c) 2019 Pranav Srinivas Kumar <pranav.srinivas.kumar@gmail.com>.
+#ifndef INDICATORS_BLOCK_PROGRESS_BAR
+#define INDICATORS_BLOCK_PROGRESS_BAR
 
-Permission is hereby  granted, free of charge, to any  person obtaining a copy
-of this software and associated  documentation files (the "Software"), to deal
-in the Software  without restriction, including without  limitation the rights
-to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
-copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
-furnished to do so, subject to the following conditions:
+#include <indicators/color.hpp>
+#include <indicators/details/stream_helper.hpp>
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
-IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
-FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
-AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
-LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-*/
-#pragma once
-#define NOMINMAX
 #include <algorithm>
 #include <atomic>
 #include <chrono>
-#include <cmath>
-#include <indicators/color.hpp>
+#include <indicators/setting.hpp>
+#include <indicators/terminal_size.hpp>
 #include <iomanip>
 #include <iostream>
+#include <sstream>
 #include <mutex>
 #include <string>
 #include <thread>
-#include <vector>
+#include <tuple>
+#include <utility>
 
 namespace indicators {
 
 class BlockProgressBar {
+  using Settings = std::tuple<option::ForegroundColor, option::BarWidth, option::Start, option::End,
+                              option::PrefixText, option::PostfixText, option::ShowPercentage,
+                              option::ShowElapsedTime, option::ShowRemainingTime, option::Completed,
+                              option::SavedStartTime, option::MaxPostfixTextLen, option::FontStyles,
+                              option::MaxProgress, option::Stream>;
+
 public:
-  void set_foreground_color(Color color) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _foreground_color = color;
+  template <typename... Args,
+            typename std::enable_if<details::are_settings_from_tuple<
+                                        Settings, typename std::decay<Args>::type...>::value,
+                                    void *>::type = nullptr>
+  explicit BlockProgressBar(Args &&... args)
+      : settings_(details::get<details::ProgressBarOption::foreground_color>(
+                      option::ForegroundColor{Color::unspecified}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::bar_width>(option::BarWidth{100},
+                                                                      std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::start>(option::Start{"["},
+                                                                  std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::end>(option::End{"]"},
+                                                                std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::prefix_text>(
+                      option::PrefixText{""}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::postfix_text>(
+                      option::PostfixText{""}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::show_percentage>(
+                      option::ShowPercentage{true}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::show_elapsed_time>(
+                      option::ShowElapsedTime{false}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::show_remaining_time>(
+                      option::ShowRemainingTime{false}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::completed>(option::Completed{false},
+                                                                      std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::saved_start_time>(
+                      option::SavedStartTime{false}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::max_postfix_text_len>(
+                      option::MaxPostfixTextLen{0}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::font_styles>(
+                      option::FontStyles{std::vector<FontStyle>{}}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::max_progress>(
+                      option::MaxProgress{100}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::stream>(option::Stream{std::cout},
+                                                                   std::forward<Args>(args)...)) {}
+
+  template <typename T, details::ProgressBarOption id>
+  void set_option(details::Setting<T, id> &&setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = std::move(setting).value;
   }
 
-  void set_bar_width(size_t bar_width) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _bar_width = bar_width;
+  template <typename T, details::ProgressBarOption id>
+  void set_option(const details::Setting<T, id> &setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = setting.value;
   }
 
-  void start_bar_with(const std::string &start) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _start = start;
-  }
-
-  void end_bar_with(const std::string &end) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _end = end;
-  }
-
-  void set_prefix_text(const std::string &text) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _prefix_text = text;
-  }
-
-  void set_postfix_text(const std::string &text) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _postfix_text = text;
-    if (_postfix_text.length() > _max_postfix_text_length)
-      _max_postfix_text_length = _postfix_text.length();
-  }
-
-  void show_percentage() { _show_percentage = true; }
-
-  void hide_percentage() { _show_percentage = false; }
-
-  void show_elapsed_time() { _show_elapsed_time = true; }
-
-  void hide_elapsed_time() { _show_elapsed_time = false; }
-
-  void show_remaining_time() { _show_remaining_time = true; }
-
-  void hide_remaining_time() { _show_remaining_time = false; }
-
-  void set_progress(float value) {
-    {
-      std::unique_lock<std::mutex> lock{_mutex};
-      _progress = value;
+  void set_option(
+      const details::Setting<std::string, details::ProgressBarOption::postfix_text> &setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() = setting.value;
+    if (setting.value.length() > get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() = setting.value.length();
     }
-    _save_start_time();
-    _print_progress();
+  }
+
+  void
+  set_option(details::Setting<std::string, details::ProgressBarOption::postfix_text> &&setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() = std::move(setting).value;
+    auto &new_value = get_value<details::ProgressBarOption::postfix_text>();
+    if (new_value.length() > get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() = new_value.length();
+    }
+  }
+
+  void set_progress(size_t value) {
+    {
+      std::lock_guard<std::mutex> lock{mutex_};
+      tick_ = value;
+    }
+    save_start_time();
+    print_progress();
   }
 
   void tick() {
     {
-      std::unique_lock<std::mutex> lock{_mutex};
-      _progress += 1;
+      std::lock_guard<std::mutex> lock{mutex_};
+      tick_++;
     }
-    _save_start_time();
-    _print_progress();
+    save_start_time();
+    print_progress();
   }
 
-  size_t current() { return std::min(static_cast<size_t>(_progress), size_t(100)); }
+  size_t current() {
+    std::lock_guard<std::mutex> lock{mutex_};
+    return (std::min)(tick_, size_t(get_value<details::ProgressBarOption::max_progress>()));
+  }
 
-  bool is_completed() const { return _completed; }
+  bool is_completed() const { return get_value<details::ProgressBarOption::completed>(); }
 
   void mark_as_completed() {
-    _completed = true;
-    _print_progress();
+    get_value<details::ProgressBarOption::completed>() = true;
+    print_progress();
   }
 
 private:
-  float _progress{0.0};
-  size_t _bar_width{100};
-  std::string _prefix_text{""};
-  std::string _start{"["};
-  std::string _fill{"█"};
-  std::string _lead{" "};
-  std::string _remainder{" "};
-  std::string _end{"]"};
-  std::string _postfix_text{""};
-  std::atomic<size_t> _max_postfix_text_length{0};
-  std::atomic<bool> _completed{false};
-  std::atomic<bool> _show_percentage{true};
-  std::atomic<bool> _show_elapsed_time{false};
-  std::atomic<bool> _show_remaining_time{false};
-  std::atomic<bool> _saved_start_time{false};
-  std::chrono::time_point<std::chrono::high_resolution_clock> _start_time_point;
-  std::mutex _mutex;
-  Color _foreground_color;
+  template <details::ProgressBarOption id>
+  auto get_value() -> decltype((details::get_value<id>(std::declval<Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
 
-  std::ostream &_print_duration(std::ostream &os, std::chrono::nanoseconds ns) {
-    using namespace std;
-    using namespace std::chrono;
-    typedef duration<int, ratio<86400>> days;
-    char fill = os.fill();
-    os.fill('0');
-    auto d = duration_cast<days>(ns);
-    ns -= d;
-    auto h = duration_cast<hours>(ns);
-    ns -= h;
-    auto m = duration_cast<minutes>(ns);
-    ns -= m;
-    auto s = duration_cast<seconds>(ns);
-    if (d.count() > 0)
-      os << setw(2) << d.count() << "d:";
-    if (h.count() > 0)
-      os << setw(2) << h.count() << "h:";
-    os << setw(2) << m.count() << "m:" << setw(2) << s.count() << 's';
-    os.fill(fill);
-    return os;
-  };
+  template <details::ProgressBarOption id>
+  auto get_value() const
+      -> decltype((details::get_value<id>(std::declval<const Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
 
-  void _save_start_time() {
-    if ((_show_elapsed_time || _show_remaining_time) && !_saved_start_time) {
-      _start_time_point = std::chrono::high_resolution_clock::now();
-      _saved_start_time = true;
+  Settings settings_;
+  float progress_{0.0};
+  size_t tick_{0};
+  std::chrono::time_point<std::chrono::high_resolution_clock> start_time_point_;
+  std::mutex mutex_;
+
+  template <typename Indicator, size_t count> friend class MultiProgress;
+  template <typename Indicator> friend class DynamicProgress;
+  std::atomic<bool> multi_progress_mode_{false};
+
+  void save_start_time() {
+    auto &show_elapsed_time = get_value<details::ProgressBarOption::show_elapsed_time>();
+    auto &saved_start_time = get_value<details::ProgressBarOption::saved_start_time>();
+    auto &show_remaining_time = get_value<details::ProgressBarOption::show_remaining_time>();
+    if ((show_elapsed_time || show_remaining_time) && !saved_start_time) {
+      start_time_point_ = std::chrono::high_resolution_clock::now();
+      saved_start_time = true;
     }
   }
 
-  void _print_progress() {
-    std::unique_lock<std::mutex> lock{_mutex};
+  std::pair<std::string, int> get_prefix_text() {
+    std::stringstream os;
+    os << get_value<details::ProgressBarOption::prefix_text>();
+    const auto result = os.str();
+    const auto result_size = unicode::display_width(result);
+    return {result, result_size};
+  }
+
+  std::pair<std::string, int> get_postfix_text() {
+    std::stringstream os;
+    const auto max_progress = get_value<details::ProgressBarOption::max_progress>();
+    progress_ = static_cast<float>(tick_)/max_progress;
     auto now = std::chrono::high_resolution_clock::now();
-    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(now - _start_time_point);
+    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(now - start_time_point_);
 
-    std::cout << termcolor::bold;
-    switch (_foreground_color) {
-    case Color::GREY:
-      std::cout << termcolor::grey;
-      break;
-    case Color::RED:
-      std::cout << termcolor::red;
-      break;
-    case Color::GREEN:
-      std::cout << termcolor::green;
-      break;
-    case Color::YELLOW:
-      std::cout << termcolor::yellow;
-      break;
-    case Color::BLUE:
-      std::cout << termcolor::blue;
-      break;
-    case Color::MAGENTA:
-      std::cout << termcolor::magenta;
-      break;
-    case Color::CYAN:
-      std::cout << termcolor::cyan;
-      break;
-    case Color::WHITE:
-      std::cout << termcolor::white;
-      break;
-    }
-    std::cout << _prefix_text;
-    std::cout << _start;
-
-    std::vector<std::string> lead_characters{" ", "▏", "▎", "▍", "▌", "▋", "▊", "▉"};
-    auto progress = std::min(1.0f, std::max(0.0f, _progress / 100.0f));
-    auto whole_width = std::floor(progress * _bar_width);
-    auto remainder_width = fmod((progress * _bar_width), 1.0f);
-    auto part_width = std::floor(remainder_width * lead_characters.size());
-    _lead = lead_characters[size_t(part_width)];
-    if ((_bar_width - whole_width - 1) < 0)
-      _lead = "";
-    for (size_t i = 0; i < whole_width; ++i)
-      std::cout << _fill;
-    std::cout << _lead;
-    for (size_t i = 0; i < (_bar_width - whole_width - 1); ++i)
-      std::cout << " ";
-
-    std::cout << _end;
-    if (_show_percentage) {
-      std::cout << " " << std::min(static_cast<size_t>(_progress), size_t(100)) << "%";
+    if (get_value<details::ProgressBarOption::show_percentage>()) {
+      os << " " << (std::min)(static_cast<size_t>(progress_ * 100.0), size_t(100))
+         << "%";
     }
 
-    if (_show_elapsed_time) {
-      std::cout << " [";
-      _print_duration(std::cout, elapsed);
-    }
+    auto &saved_start_time = get_value<details::ProgressBarOption::saved_start_time>();
 
-    if (_show_remaining_time) {
-      if (_show_elapsed_time)
-        std::cout << "<";
+    if (get_value<details::ProgressBarOption::show_elapsed_time>()) {
+      os << " [";
+      if (saved_start_time)
+        details::write_duration(os, elapsed);
       else
-        std::cout << " [";
-      auto eta = std::chrono::nanoseconds(
-          _progress > 0 ? static_cast<long long>(elapsed.count() * 100 / _progress) : 0);
-      auto remaining = eta > elapsed ? (eta - elapsed) : (elapsed - eta);
-      _print_duration(std::cout, remaining);
-      std::cout << "]";
+        os << "00:00s";
     }
 
-    if (_max_postfix_text_length == 0)
-      _max_postfix_text_length = 10;
-    std::cout << " " << _postfix_text << std::string(_max_postfix_text_length, ' ') << "\r";
-    std::cout.flush();
-    if (_progress > 100.0) {
-      _completed = true;
+    if (get_value<details::ProgressBarOption::show_remaining_time>()) {
+      if (get_value<details::ProgressBarOption::show_elapsed_time>())
+        os << "<";
+      else
+        os << " [";
+
+      if (saved_start_time) {
+        auto eta = std::chrono::nanoseconds(
+            tick_ > 0
+                ? static_cast<long long>(std::ceil(float(elapsed.count()) / progress_))
+                : 0);
+        auto remaining = eta > elapsed ? (eta - elapsed) : (elapsed - eta);
+        details::write_duration(os, remaining);
+      } else {
+        os << "00:00s";
+      }
+
+      os << "]";
+    } else {
+      if (get_value<details::ProgressBarOption::show_elapsed_time>())
+        os << "]";
     }
-    if (_completed)
-      std::cout << termcolor::reset << std::endl;
+
+    os << " " << get_value<details::ProgressBarOption::postfix_text>();
+
+    const auto result = os.str();
+    const auto result_size = unicode::display_width(result);
+    return {result, result_size};
+  }
+
+public:
+  void print_progress(bool from_multi_progress = false) {
+    std::lock_guard<std::mutex> lock{mutex_};
+
+    auto &os = get_value<details::ProgressBarOption::stream>();
+
+    const auto max_progress = get_value<details::ProgressBarOption::max_progress>();
+    if (multi_progress_mode_ && !from_multi_progress) {
+      if (tick_ > max_progress) {
+        get_value<details::ProgressBarOption::completed>() = true;
+      }
+      return;
+    }
+
+    if (get_value<details::ProgressBarOption::foreground_color>() != Color::unspecified)
+      details::set_stream_color(os, get_value<details::ProgressBarOption::foreground_color>());
+
+    for (auto &style : get_value<details::ProgressBarOption::font_styles>())
+      details::set_font_style(os, style);
+
+    const auto prefix_pair = get_prefix_text();
+    const auto prefix_text = prefix_pair.first;
+    const auto prefix_length = prefix_pair.second;
+    os << "\r" << prefix_text;
+
+    os << get_value<details::ProgressBarOption::start>();
+
+    details::BlockProgressScaleWriter writer{os,
+                                             get_value<details::ProgressBarOption::bar_width>()};
+    writer.write(progress_ * 100);
+
+    os << get_value<details::ProgressBarOption::end>();
+
+    const auto postfix_pair = get_postfix_text();
+    const auto postfix_text = postfix_pair.first;
+    const auto postfix_length = postfix_pair.second;
+    os << postfix_text;
+
+    // Get length of prefix text and postfix text
+    const auto start_length = get_value<details::ProgressBarOption::start>().size();
+    const auto bar_width = get_value<details::ProgressBarOption::bar_width>();
+    const auto end_length = get_value<details::ProgressBarOption::end>().size();
+    const auto terminal_width = terminal_size().second;
+    // prefix + bar_width + postfix should be <= terminal_width
+    const int remaining = terminal_width - (prefix_length + start_length + bar_width + end_length + postfix_length);
+    if (prefix_length == -1 || postfix_length == -1) {
+      os << "\r";
+    } else if (remaining > 0) {
+      os << std::string(remaining, ' ') << "\r";
+    } else if (remaining < 0) {
+      // Do nothing. Maybe in the future truncate postfix with ...
+    }
+    os.flush();
+
+    if (tick_ > max_progress) {
+      get_value<details::ProgressBarOption::completed>() = true;
+    }
+    if (get_value<details::ProgressBarOption::completed>() &&
+        !from_multi_progress) // Don't std::endl if calling from MultiProgress
+      os << termcolor::reset << std::endl;
   }
 };
 
 } // namespace indicators
+
+#endif

include/indicators/color.hpp

@@ -1,32 +1,9 @@
-/*
-Activity Indicators for Modern C++
-https://github.com/p-ranav/indica
 
-Licensed under the MIT License <http://opensource.org/licenses/MIT>.
-SPDX-License-Identifier: MIT
-Copyright (c) 2019 Pranav Srinivas Kumar <pranav.srinivas.kumar@gmail.com>.
-
-Permission is hereby  granted, free of charge, to any  person obtaining a copy
-of this software and associated  documentation files (the "Software"), to deal
-in the Software  without restriction, including without  limitation the rights
-to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
-copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
-IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
-FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
-AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
-LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-*/
-#pragma once
-#include <indicators/termcolor.hpp>
+#ifndef INDICATORS_COLOR
+#define INDICATORS_COLOR
 
 namespace indicators {
-enum class Color { GREY, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE };
+enum class Color { grey, red, green, yellow, blue, magenta, cyan, white, unspecified };
 }
+
+#endif

include/indicators/cursor_control.hpp

@@ -0,0 +1,66 @@
+
+#ifndef INDICATORS_CURSOR_CONTROL
+#define INDICATORS_CURSOR_CONTROL
+
+#if defined(_MSC_VER)
+#if !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+#include <io.h>
+#include <windows.h>
+#else
+#include <cstdio>
+#endif
+
+namespace indicators {
+
+#if defined(_MSC_VER)
+
+static inline void show_console_cursor(bool const show) {
+  HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
+
+  CONSOLE_CURSOR_INFO cursorInfo;
+
+  GetConsoleCursorInfo(out, &cursorInfo);
+  cursorInfo.bVisible = show; // set the cursor visibility
+  SetConsoleCursorInfo(out, &cursorInfo);
+}
+
+static inline void erase_line() {
+  auto hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
+  if (!hStdout)
+    return;
+
+  CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
+  GetConsoleScreenBufferInfo(hStdout, &csbiInfo);
+
+  COORD cursor;
+
+  cursor.X = 0;
+  cursor.Y = csbiInfo.dwCursorPosition.Y;
+
+  DWORD count = 0;
+
+  FillConsoleOutputCharacterA(hStdout, ' ', csbiInfo.dwSize.X, cursor, &count);
+
+  FillConsoleOutputAttribute(hStdout, csbiInfo.wAttributes, csbiInfo.dwSize.X,
+                             cursor, &count);
+
+  SetConsoleCursorPosition(hStdout, cursor);
+}
+
+#else
+
+static inline void show_console_cursor(bool const show) {
+  std::fputs(show ? "\033[?25h" : "\033[?25l", stdout);
+}
+
+static inline void erase_line() {
+  std::fputs("\r\033[K", stdout);
+}
+
+#endif
+
+} // namespace indicators
+
+#endif

include/indicators/cursor_movement.hpp

@@ -0,0 +1,50 @@
+
+#ifndef INDICATORS_CURSOR_MOVEMENT
+#define INDICATORS_CURSOR_MOVEMENT
+
+#if defined(_MSC_VER)
+#if !defined(NOMINMAX)
+#define NOMINMAX
+#endif
+#include <io.h>
+#include <windows.h>
+#else
+#include <iostream>
+#endif
+
+namespace indicators {
+
+#ifdef _MSC_VER
+
+static inline void move(int x, int y) {
+  auto hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
+  if (!hStdout)
+    return;
+
+  CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
+  GetConsoleScreenBufferInfo(hStdout, &csbiInfo);
+
+  COORD cursor;
+
+  cursor.X = csbiInfo.dwCursorPosition.X + x;
+  cursor.Y = csbiInfo.dwCursorPosition.Y + y;
+  SetConsoleCursorPosition(hStdout, cursor);
+}
+
+static inline void move_up(int lines) { move(0, -lines); }
+static inline void move_down(int lines) { move(0, -lines); }
+static inline void move_right(int cols) { move(cols, 0); }
+static inline void move_left(int cols) { move(-cols, 0); }
+
+#else
+
+static inline void move_up(int lines) { std::cout << "\033[" << lines << "A"; }
+static inline void move_down(int lines) { std::cout << "\033[" << lines << "B"; }
+static inline void move_right(int cols) { std::cout << "\033[" << cols << "C"; }
+static inline void move_left(int cols) { std::cout << "\033[" << cols << "D"; }
+
+#endif
+
+} // namespace indicators
+
+#endif

include/indicators/details/stream_helper.hpp

@@ -0,0 +1,223 @@
+
+#ifndef INDICATORS_STREAM_HELPER
+#define INDICATORS_STREAM_HELPER
+
+#include <indicators/display_width.hpp>
+#include <indicators/setting.hpp>
+#include <indicators/termcolor.hpp>
+
+#include <algorithm>
+#include <chrono>
+#include <iomanip>
+#include <ostream>
+#include <string>
+#include <vector>
+
+#include <cassert>
+#include <cmath>
+
+namespace indicators {
+namespace details {
+
+inline void set_stream_color(std::ostream &os, Color color) {
+  switch (color) {
+  case Color::grey:
+    os << termcolor::grey;
+    break;
+  case Color::red:
+    os << termcolor::red;
+    break;
+  case Color::green:
+    os << termcolor::green;
+    break;
+  case Color::yellow:
+    os << termcolor::yellow;
+    break;
+  case Color::blue:
+    os << termcolor::blue;
+    break;
+  case Color::magenta:
+    os << termcolor::magenta;
+    break;
+  case Color::cyan:
+    os << termcolor::cyan;
+    break;
+  case Color::white:
+    os << termcolor::white;
+    break;
+  default:
+    assert(false);
+  }
+}
+
+inline void set_font_style(std::ostream &os, FontStyle style) {
+  switch (style) {
+  case FontStyle::bold:
+    os << termcolor::bold;
+    break;
+  case FontStyle::dark:
+    os << termcolor::dark;
+    break;
+  case FontStyle::italic:
+    os << termcolor::italic;
+    break;
+  case FontStyle::underline:
+    os << termcolor::underline;
+    break;
+  case FontStyle::blink:
+    os << termcolor::blink;
+    break;
+  case FontStyle::reverse:
+    os << termcolor::reverse;
+    break;
+  case FontStyle::concealed:
+    os << termcolor::concealed;
+    break;
+  case FontStyle::crossed:
+    os << termcolor::crossed;
+    break;
+  default:
+    break;
+  }
+}
+
+inline std::ostream &write_duration(std::ostream &os, std::chrono::nanoseconds ns) {
+  using namespace std;
+  using namespace std::chrono;
+  using days = duration<int, ratio<86400>>;
+  char fill = os.fill();
+  os.fill('0');
+  auto d = duration_cast<days>(ns);
+  ns -= d;
+  auto h = duration_cast<hours>(ns);
+  ns -= h;
+  auto m = duration_cast<minutes>(ns);
+  ns -= m;
+  auto s = duration_cast<seconds>(ns);
+  if (d.count() > 0)
+    os << setw(2) << d.count() << "d:";
+  if (h.count() > 0)
+    os << setw(2) << h.count() << "h:";
+  os << setw(2) << m.count() << "m:" << setw(2) << s.count() << 's';
+  os.fill(fill);
+  return os;
+}
+
+class BlockProgressScaleWriter {
+public:
+  BlockProgressScaleWriter(std::ostream &os, size_t bar_width) : os(os), bar_width(bar_width) {}
+
+  std::ostream &write(float progress) {
+    std::string fill_text{"█"};
+    std::vector<std::string> lead_characters{" ", "▏", "▎", "▍", "▌", "▋", "▊", "▉"};
+    auto value = (std::min)(1.0f, (std::max)(0.0f, progress / 100.0f));
+    auto whole_width = std::floor(value * bar_width);
+    auto remainder_width = fmod((value * bar_width), 1.0f);
+    auto part_width = std::floor(remainder_width * lead_characters.size());
+    std::string lead_text = lead_characters[size_t(part_width)];
+    if ((bar_width - whole_width - 1) < 0)
+      lead_text = "";
+    for (size_t i = 0; i < whole_width; ++i)
+      os << fill_text;
+    os << lead_text;
+    for (size_t i = 0; i < (bar_width - whole_width - 1); ++i)
+      os << " ";
+    return os;
+  }
+
+private:
+  std::ostream &os;
+  size_t bar_width = 0;
+};
+
+class ProgressScaleWriter {
+public:
+  ProgressScaleWriter(std::ostream &os, size_t bar_width, const std::string &fill,
+                      const std::string &lead, const std::string &remainder)
+      : os(os), bar_width(bar_width), fill(fill), lead(lead), remainder(remainder) {}
+
+  std::ostream &write(float progress) {
+    auto pos = static_cast<size_t>(progress * bar_width / 100.0);
+    for (size_t i = 0, current_display_width = 0; i < bar_width;) {
+      std::string next;
+
+      if (i < pos) {
+        next = fill;
+        current_display_width = unicode::display_width(fill);
+      } else if (i == pos) {
+        next = lead;
+        current_display_width = unicode::display_width(lead);
+      } else {
+        next = remainder;
+        current_display_width = unicode::display_width(remainder);
+      }
+
+      i += current_display_width;
+
+      if (i > bar_width) {
+        // `next` is larger than the allowed bar width
+        // fill with empty space instead
+        os << std::string((bar_width - (i - current_display_width)), ' ');
+        break;
+      }
+
+      os << next;
+    }
+    return os;
+  }
+
+private:
+  std::ostream &os;
+  size_t bar_width = 0;
+  std::string fill;
+  std::string lead;
+  std::string remainder;
+};
+
+class IndeterminateProgressScaleWriter {
+public:
+  IndeterminateProgressScaleWriter(std::ostream &os, size_t bar_width, const std::string &fill,
+                                   const std::string &lead)
+      : os(os), bar_width(bar_width), fill(fill), lead(lead) {}
+
+  std::ostream &write(size_t progress) {
+    for (size_t i = 0; i < bar_width;) {
+      std::string next;
+      size_t current_display_width = 0;
+
+      if (i < progress) {
+        next = fill;
+        current_display_width = unicode::display_width(fill);
+      } else if (i == progress) {
+        next = lead;
+        current_display_width = unicode::display_width(lead);
+      } else {
+        next = fill;
+        current_display_width = unicode::display_width(fill);
+      }
+
+      i += current_display_width;
+
+      if (i > bar_width) {
+        // `next` is larger than the allowed bar width
+        // fill with empty space instead
+        os << std::string((bar_width - (i - current_display_width)), ' ');
+        break;
+      }
+
+      os << next;
+    }
+    return os;
+  }
+
+private:
+  std::ostream &os;
+  size_t bar_width = 0;
+  std::string fill;
+  std::string lead;
+};
+
+} // namespace details
+} // namespace indicators
+
+#endif

include/indicators/display_width.hpp

@@ -0,0 +1,359 @@
+
+#ifndef INDICATORS_DISPLAY_WIDTH
+#define INDICATORS_DISPLAY_WIDTH
+
+#include <clocale>
+#include <cstdlib>
+#include <locale>
+#include <string>
+#include <wchar.h>
+
+namespace unicode {
+
+namespace details {
+
+/*
+ * This is an implementation of wcwidth() and wcswidth() (defined in
+ * IEEE Std 1002.1-2001) for Unicode.
+ *
+ * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
+ * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
+ *
+ * In fixed-width output devices, Latin characters all occupy a single
+ * "cell" position of equal width, whereas ideographic CJK characters
+ * occupy two such cells. Interoperability between terminal-line
+ * applications and (teletype-style) character terminals using the
+ * UTF-8 encoding requires agreement on which character should advance
+ * the cursor by how many cell positions. No established formal
+ * standards exist at present on which Unicode character shall occupy
+ * how many cell positions on character terminals. These routines are
+ * a first attempt of defining such behavior based on simple rules
+ * applied to data provided by the Unicode Consortium.
+ *
+ * For some graphical characters, the Unicode standard explicitly
+ * defines a character-cell width via the definition of the East Asian
+ * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
+ * In all these cases, there is no ambiguity about which width a
+ * terminal shall use. For characters in the East Asian Ambiguous (A)
+ * class, the width choice depends purely on a preference of backward
+ * compatibility with either historic CJK or Western practice.
+ * Choosing single-width for these characters is easy to justify as
+ * the appropriate long-term solution, as the CJK practice of
+ * displaying these characters as double-width comes from historic
+ * implementation simplicity (8-bit encoded characters were displayed
+ * single-width and 16-bit ones double-width, even for Greek,
+ * Cyrillic, etc.) and not any typographic considerations.
+ *
+ * Much less clear is the choice of width for the Not East Asian
+ * (Neutral) class. Existing practice does not dictate a width for any
+ * of these characters. It would nevertheless make sense
+ * typographically to allocate two character cells to characters such
+ * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
+ * represented adequately with a single-width glyph. The following
+ * routines at present merely assign a single-cell width to all
+ * neutral characters, in the interest of simplicity. This is not
+ * entirely satisfactory and should be reconsidered before
+ * establishing a formal standard in this area. At the moment, the
+ * decision which Not East Asian (Neutral) characters should be
+ * represented by double-width glyphs cannot yet be answered by
+ * applying a simple rule from the Unicode database content. Setting
+ * up a proper standard for the behavior of UTF-8 character terminals
+ * will require a careful analysis not only of each Unicode character,
+ * but also of each presentation form, something the author of these
+ * routines has avoided to do so far.
+ *
+ * http://www.unicode.org/unicode/reports/tr11/
+ *
+ * Markus Kuhn -- 2007-05-26 (Unicode 5.0)
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * for any purpose and without fee is hereby granted. The author
+ * disclaims all warranties with regard to this software.
+ *
+ * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
+ */
+
+struct interval {
+  int first;
+  int last;
+};
+
+/* auxiliary function for binary search in interval table */
+static inline int bisearch(wchar_t ucs, const struct interval *table, int max) {
+  int min = 0;
+  int mid;
+
+  if (ucs < table[0].first || ucs > table[max].last)
+    return 0;
+  while (max >= min) {
+    mid = (min + max) / 2;
+    if (ucs > table[mid].last)
+      min = mid + 1;
+    else if (ucs < table[mid].first)
+      max = mid - 1;
+    else
+      return 1;
+  }
+
+  return 0;
+}
+
+/* The following two functions define the column width of an ISO 10646
+ * character as follows:
+ *
+ *    - The null character (U+0000) has a column width of 0.
+ *
+ *    - Other C0/C1 control characters and DEL will lead to a return
+ *      value of -1.
+ *
+ *    - Non-spacing and enclosing combining characters (general
+ *      category code Mn or Me in the Unicode database) have a
+ *      column width of 0.
+ *
+ *    - SOFT HYPHEN (U+00AD) has a column width of 1.
+ *
+ *    - Other format characters (general category code Cf in the Unicode
+ *      database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
+ *
+ *    - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
+ *      have a column width of 0.
+ *
+ *    - Spacing characters in the East Asian Wide (W) or East Asian
+ *      Full-width (F) category as defined in Unicode Technical
+ *      Report #11 have a column width of 2.
+ *
+ *    - All remaining characters (including all printable
+ *      ISO 8859-1 and WGL4 characters, Unicode control characters,
+ *      etc.) have a column width of 1.
+ *
+ * This implementation assumes that wchar_t characters are encoded
+ * in ISO 10646.
+ */
+
+static inline int mk_wcwidth(wchar_t ucs) {
+  /* sorted list of non-overlapping intervals of non-spacing characters */
+  /* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
+  static const struct interval combining[] = {
+      {0x0300, 0x036F},   {0x0483, 0x0486},   {0x0488, 0x0489},
+      {0x0591, 0x05BD},   {0x05BF, 0x05BF},   {0x05C1, 0x05C2},
+      {0x05C4, 0x05C5},   {0x05C7, 0x05C7},   {0x0600, 0x0603},
+      {0x0610, 0x0615},   {0x064B, 0x065E},   {0x0670, 0x0670},
+      {0x06D6, 0x06E4},   {0x06E7, 0x06E8},   {0x06EA, 0x06ED},
+      {0x070F, 0x070F},   {0x0711, 0x0711},   {0x0730, 0x074A},
+      {0x07A6, 0x07B0},   {0x07EB, 0x07F3},   {0x0901, 0x0902},
+      {0x093C, 0x093C},   {0x0941, 0x0948},   {0x094D, 0x094D},
+      {0x0951, 0x0954},   {0x0962, 0x0963},   {0x0981, 0x0981},
+      {0x09BC, 0x09BC},   {0x09C1, 0x09C4},   {0x09CD, 0x09CD},
+      {0x09E2, 0x09E3},   {0x0A01, 0x0A02},   {0x0A3C, 0x0A3C},
+      {0x0A41, 0x0A42},   {0x0A47, 0x0A48},   {0x0A4B, 0x0A4D},
+      {0x0A70, 0x0A71},   {0x0A81, 0x0A82},   {0x0ABC, 0x0ABC},
+      {0x0AC1, 0x0AC5},   {0x0AC7, 0x0AC8},   {0x0ACD, 0x0ACD},
+      {0x0AE2, 0x0AE3},   {0x0B01, 0x0B01},   {0x0B3C, 0x0B3C},
+      {0x0B3F, 0x0B3F},   {0x0B41, 0x0B43},   {0x0B4D, 0x0B4D},
+      {0x0B56, 0x0B56},   {0x0B82, 0x0B82},   {0x0BC0, 0x0BC0},
+      {0x0BCD, 0x0BCD},   {0x0C3E, 0x0C40},   {0x0C46, 0x0C48},
+      {0x0C4A, 0x0C4D},   {0x0C55, 0x0C56},   {0x0CBC, 0x0CBC},
+      {0x0CBF, 0x0CBF},   {0x0CC6, 0x0CC6},   {0x0CCC, 0x0CCD},
+      {0x0CE2, 0x0CE3},   {0x0D41, 0x0D43},   {0x0D4D, 0x0D4D},
+      {0x0DCA, 0x0DCA},   {0x0DD2, 0x0DD4},   {0x0DD6, 0x0DD6},
+      {0x0E31, 0x0E31},   {0x0E34, 0x0E3A},   {0x0E47, 0x0E4E},
+      {0x0EB1, 0x0EB1},   {0x0EB4, 0x0EB9},   {0x0EBB, 0x0EBC},
+      {0x0EC8, 0x0ECD},   {0x0F18, 0x0F19},   {0x0F35, 0x0F35},
+      {0x0F37, 0x0F37},   {0x0F39, 0x0F39},   {0x0F71, 0x0F7E},
+      {0x0F80, 0x0F84},   {0x0F86, 0x0F87},   {0x0F90, 0x0F97},
+      {0x0F99, 0x0FBC},   {0x0FC6, 0x0FC6},   {0x102D, 0x1030},
+      {0x1032, 0x1032},   {0x1036, 0x1037},   {0x1039, 0x1039},
+      {0x1058, 0x1059},   {0x1160, 0x11FF},   {0x135F, 0x135F},
+      {0x1712, 0x1714},   {0x1732, 0x1734},   {0x1752, 0x1753},
+      {0x1772, 0x1773},   {0x17B4, 0x17B5},   {0x17B7, 0x17BD},
+      {0x17C6, 0x17C6},   {0x17C9, 0x17D3},   {0x17DD, 0x17DD},
+      {0x180B, 0x180D},   {0x18A9, 0x18A9},   {0x1920, 0x1922},
+      {0x1927, 0x1928},   {0x1932, 0x1932},   {0x1939, 0x193B},
+      {0x1A17, 0x1A18},   {0x1B00, 0x1B03},   {0x1B34, 0x1B34},
+      {0x1B36, 0x1B3A},   {0x1B3C, 0x1B3C},   {0x1B42, 0x1B42},
+      {0x1B6B, 0x1B73},   {0x1DC0, 0x1DCA},   {0x1DFE, 0x1DFF},
+      {0x200B, 0x200F},   {0x202A, 0x202E},   {0x2060, 0x2063},
+      {0x206A, 0x206F},   {0x20D0, 0x20EF},   {0x302A, 0x302F},
+      {0x3099, 0x309A},   {0xA806, 0xA806},   {0xA80B, 0xA80B},
+      {0xA825, 0xA826},   {0xFB1E, 0xFB1E},   {0xFE00, 0xFE0F},
+      {0xFE20, 0xFE23},   {0xFEFF, 0xFEFF},   {0xFFF9, 0xFFFB},
+      {0x10A01, 0x10A03}, {0x10A05, 0x10A06}, {0x10A0C, 0x10A0F},
+      {0x10A38, 0x10A3A}, {0x10A3F, 0x10A3F}, {0x1D167, 0x1D169},
+      {0x1D173, 0x1D182}, {0x1D185, 0x1D18B}, {0x1D1AA, 0x1D1AD},
+      {0x1D242, 0x1D244}, {0xE0001, 0xE0001}, {0xE0020, 0xE007F},
+      {0xE0100, 0xE01EF}};
+
+  /* test for 8-bit control characters */
+  if (ucs == 0)
+    return 0;
+  if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
+    return -1;
+
+  /* binary search in table of non-spacing characters */
+  if (bisearch(ucs, combining, sizeof(combining) / sizeof(struct interval) - 1))
+    return 0;
+
+  /* if we arrive here, ucs is not a combining or C0/C1 control character */
+
+  return 1 +
+         (ucs >= 0x1100 &&
+          (ucs <= 0x115f || /* Hangul Jamo init. consonants */
+           ucs == 0x2329 || ucs == 0x232a ||
+           (ucs >= 0x2e80 && ucs <= 0xa4cf && ucs != 0x303f) || /* CJK ... Yi */
+           (ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */
+           (ucs >= 0xf900 &&
+            ucs <= 0xfaff) || /* CJK Compatibility Ideographs */
+           (ucs >= 0xfe10 && ucs <= 0xfe19) || /* Vertical forms */
+           (ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */
+           (ucs >= 0xff00 && ucs <= 0xff60) || /* Fullwidth Forms */
+           (ucs >= 0xffe0 && ucs <= 0xffe6) ||
+           (ucs >= 0x20000 && ucs <= 0x2fffd) ||
+           (ucs >= 0x30000 && ucs <= 0x3fffd)));
+}
+
+static inline int mk_wcswidth(const wchar_t *pwcs, size_t n) {
+  int w, width = 0;
+
+  for (; *pwcs && n-- > 0; pwcs++)
+    if ((w = mk_wcwidth(*pwcs)) < 0)
+      return -1;
+    else
+      width += w;
+
+  return width;
+}
+
+/*
+ * The following functions are the same as mk_wcwidth() and
+ * mk_wcswidth(), except that spacing characters in the East Asian
+ * Ambiguous (A) category as defined in Unicode Technical Report #11
+ * have a column width of 2. This variant might be useful for users of
+ * CJK legacy encodings who want to migrate to UCS without changing
+ * the traditional terminal character-width behaviour. It is not
+ * otherwise recommended for general use.
+ */
+static inline int mk_wcwidth_cjk(wchar_t ucs) {
+  /* sorted list of non-overlapping intervals of East Asian Ambiguous
+   * characters, generated by "uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf c" */
+  static const struct interval ambiguous[] = {
+      {0x00A1, 0x00A1}, {0x00A4, 0x00A4},   {0x00A7, 0x00A8},
+      {0x00AA, 0x00AA}, {0x00AE, 0x00AE},   {0x00B0, 0x00B4},
+      {0x00B6, 0x00BA}, {0x00BC, 0x00BF},   {0x00C6, 0x00C6},
+      {0x00D0, 0x00D0}, {0x00D7, 0x00D8},   {0x00DE, 0x00E1},
+      {0x00E6, 0x00E6}, {0x00E8, 0x00EA},   {0x00EC, 0x00ED},
+      {0x00F0, 0x00F0}, {0x00F2, 0x00F3},   {0x00F7, 0x00FA},
+      {0x00FC, 0x00FC}, {0x00FE, 0x00FE},   {0x0101, 0x0101},
+      {0x0111, 0x0111}, {0x0113, 0x0113},   {0x011B, 0x011B},
+      {0x0126, 0x0127}, {0x012B, 0x012B},   {0x0131, 0x0133},
+      {0x0138, 0x0138}, {0x013F, 0x0142},   {0x0144, 0x0144},
+      {0x0148, 0x014B}, {0x014D, 0x014D},   {0x0152, 0x0153},
+      {0x0166, 0x0167}, {0x016B, 0x016B},   {0x01CE, 0x01CE},
+      {0x01D0, 0x01D0}, {0x01D2, 0x01D2},   {0x01D4, 0x01D4},
+      {0x01D6, 0x01D6}, {0x01D8, 0x01D8},   {0x01DA, 0x01DA},
+      {0x01DC, 0x01DC}, {0x0251, 0x0251},   {0x0261, 0x0261},
+      {0x02C4, 0x02C4}, {0x02C7, 0x02C7},   {0x02C9, 0x02CB},
+      {0x02CD, 0x02CD}, {0x02D0, 0x02D0},   {0x02D8, 0x02DB},
+      {0x02DD, 0x02DD}, {0x02DF, 0x02DF},   {0x0391, 0x03A1},
+      {0x03A3, 0x03A9}, {0x03B1, 0x03C1},   {0x03C3, 0x03C9},
+      {0x0401, 0x0401}, {0x0410, 0x044F},   {0x0451, 0x0451},
+      {0x2010, 0x2010}, {0x2013, 0x2016},   {0x2018, 0x2019},
+      {0x201C, 0x201D}, {0x2020, 0x2022},   {0x2024, 0x2027},
+      {0x2030, 0x2030}, {0x2032, 0x2033},   {0x2035, 0x2035},
+      {0x203B, 0x203B}, {0x203E, 0x203E},   {0x2074, 0x2074},
+      {0x207F, 0x207F}, {0x2081, 0x2084},   {0x20AC, 0x20AC},
+      {0x2103, 0x2103}, {0x2105, 0x2105},   {0x2109, 0x2109},
+      {0x2113, 0x2113}, {0x2116, 0x2116},   {0x2121, 0x2122},
+      {0x2126, 0x2126}, {0x212B, 0x212B},   {0x2153, 0x2154},
+      {0x215B, 0x215E}, {0x2160, 0x216B},   {0x2170, 0x2179},
+      {0x2190, 0x2199}, {0x21B8, 0x21B9},   {0x21D2, 0x21D2},
+      {0x21D4, 0x21D4}, {0x21E7, 0x21E7},   {0x2200, 0x2200},
+      {0x2202, 0x2203}, {0x2207, 0x2208},   {0x220B, 0x220B},
+      {0x220F, 0x220F}, {0x2211, 0x2211},   {0x2215, 0x2215},
+      {0x221A, 0x221A}, {0x221D, 0x2220},   {0x2223, 0x2223},
+      {0x2225, 0x2225}, {0x2227, 0x222C},   {0x222E, 0x222E},
+      {0x2234, 0x2237}, {0x223C, 0x223D},   {0x2248, 0x2248},
+      {0x224C, 0x224C}, {0x2252, 0x2252},   {0x2260, 0x2261},
+      {0x2264, 0x2267}, {0x226A, 0x226B},   {0x226E, 0x226F},
+      {0x2282, 0x2283}, {0x2286, 0x2287},   {0x2295, 0x2295},
+      {0x2299, 0x2299}, {0x22A5, 0x22A5},   {0x22BF, 0x22BF},
+      {0x2312, 0x2312}, {0x2460, 0x24E9},   {0x24EB, 0x254B},
+      {0x2550, 0x2573}, {0x2580, 0x258F},   {0x2592, 0x2595},
+      {0x25A0, 0x25A1}, {0x25A3, 0x25A9},   {0x25B2, 0x25B3},
+      {0x25B6, 0x25B7}, {0x25BC, 0x25BD},   {0x25C0, 0x25C1},
+      {0x25C6, 0x25C8}, {0x25CB, 0x25CB},   {0x25CE, 0x25D1},
+      {0x25E2, 0x25E5}, {0x25EF, 0x25EF},   {0x2605, 0x2606},
+      {0x2609, 0x2609}, {0x260E, 0x260F},   {0x2614, 0x2615},
+      {0x261C, 0x261C}, {0x261E, 0x261E},   {0x2640, 0x2640},
+      {0x2642, 0x2642}, {0x2660, 0x2661},   {0x2663, 0x2665},
+      {0x2667, 0x266A}, {0x266C, 0x266D},   {0x266F, 0x266F},
+      {0x273D, 0x273D}, {0x2776, 0x277F},   {0xE000, 0xF8FF},
+      {0xFFFD, 0xFFFD}, {0xF0000, 0xFFFFD}, {0x100000, 0x10FFFD}};
+
+  /* binary search in table of non-spacing characters */
+  if (bisearch(ucs, ambiguous, sizeof(ambiguous) / sizeof(struct interval) - 1))
+    return 2;
+
+  return mk_wcwidth(ucs);
+}
+
+static inline int mk_wcswidth_cjk(const wchar_t *pwcs, size_t n) {
+  int w, width = 0;
+
+  for (; *pwcs && n-- > 0; pwcs++)
+    if ((w = mk_wcwidth_cjk(*pwcs)) < 0)
+      return -1;
+    else
+      width += w;
+
+  return width;
+}
+
+// convert UTF-8 string to wstring
+#ifdef _MSC_VER
+static inline std::wstring utf8_decode(const std::string& s) {
+    auto r = setlocale(LC_ALL, NULL);
+    std::string curLocale;
+    if (r)
+      curLocale = r;
+    const char* _Source = s.c_str();
+    size_t _Dsize = std::strlen(_Source) + 1;
+    wchar_t* _Dest = new wchar_t[_Dsize];
+    size_t _Osize;
+    mbstowcs_s(&_Osize, _Dest, _Dsize, _Source, _Dsize);
+    std::wstring result = _Dest;
+    delete[] _Dest;
+    setlocale(LC_ALL, curLocale.c_str());
+    return result;
+}
+#else 
+static inline std::wstring utf8_decode(const std::string& s) {
+    auto r = setlocale(LC_ALL, NULL);
+    std::string curLocale;
+    if (r)
+      curLocale = r;
+    const char* _Source = s.c_str();
+    size_t _Dsize = mbstowcs(NULL, _Source, 0) + 1;
+    wchar_t* _Dest = new wchar_t[_Dsize];
+    wmemset(_Dest, 0, _Dsize);
+    mbstowcs(_Dest, _Source, _Dsize);
+    std::wstring result = _Dest;
+    delete[] _Dest;
+    setlocale(LC_ALL, curLocale.c_str());
+    return result;
+}
+#endif
+
+} // namespace details
+
+static inline int display_width(const std::string &input) {
+  using namespace unicode::details;
+  return mk_wcswidth(utf8_decode(input).c_str(), input.size());
+}
+
+static inline int display_width(const std::wstring &input) {
+  return details::mk_wcswidth(input.c_str(), input.size());
+}
+
+} // namespace unicode
+
+#endif

include/indicators/dynamic_progress.hpp

@@ -0,0 +1,123 @@
+
+#ifndef INDICATORS_DYNAMIC_PROGRESS
+#define INDICATORS_DYNAMIC_PROGRESS
+
+#include <atomic>
+#include <functional>
+#include <indicators/color.hpp>
+#include <indicators/setting.hpp>
+#include <indicators/cursor_control.hpp>
+#include <indicators/cursor_movement.hpp>
+#include <indicators/details/stream_helper.hpp>
+#include <iostream>
+#include <memory>
+#include <mutex>
+#include <vector>
+
+namespace indicators {
+
+template <typename Indicator> class DynamicProgress {
+  using Settings = std::tuple<option::HideBarWhenComplete>;
+
+public:
+  template <typename... Indicators> explicit DynamicProgress(Indicators &&... bars) {
+    (bars_.emplace_back(std::move(bars)), ...);
+    for (auto &bar : bars_) {
+      bar->multi_progress_mode_ = true;
+      ++total_count_;
+      ++incomplete_count_;
+    }
+  }
+
+  Indicator &operator[](size_t index) {
+    print_progress();
+    std::lock_guard<std::mutex> lock{mutex_};
+    return *bars_[index];
+  }
+
+  size_t push_back(std::unique_ptr<Indicator> bar) {
+    std::lock_guard<std::mutex> lock{mutex_};
+    bar->multi_progress_mode_ = true;
+    bars_.push_back(std::move(bar));
+    return bars_.size() - 1;
+  }
+
+  template <typename T, details::ProgressBarOption id>
+  void set_option(details::Setting<T, id> &&setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = std::move(setting).value;
+  }
+
+  template <typename T, details::ProgressBarOption id>
+  void set_option(const details::Setting<T, id> &setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = setting.value;
+  }
+
+private:
+  Settings settings_;
+  std::atomic<bool> started_{false};
+  std::mutex mutex_;
+  std::vector<std::unique_ptr<Indicator>> bars_;
+  std::atomic<size_t> total_count_{0};
+  std::atomic<size_t> incomplete_count_{0};
+
+  template <details::ProgressBarOption id>
+  auto get_value() -> decltype((details::get_value<id>(std::declval<Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
+
+  template <details::ProgressBarOption id>
+  auto get_value() const
+      -> decltype((details::get_value<id>(std::declval<const Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
+
+public:
+  void print_progress() {
+    std::lock_guard<std::mutex> lock{mutex_};
+    auto &hide_bar_when_complete = get_value<details::ProgressBarOption::hide_bar_when_complete>();
+    if (hide_bar_when_complete) {
+      // Hide completed bars
+      if (started_) {
+        for (size_t i = 0; i < incomplete_count_; ++i) {
+          move_up(1);
+          erase_line();
+          std::cout << std::flush;
+        }
+      }
+      incomplete_count_ = 0;
+      for (auto &bar : bars_) {
+        if (!bar->is_completed()) {
+          bar->print_progress(true);
+          std::cout << "\n";
+          ++incomplete_count_;
+        }
+      }
+      if (!started_)
+        started_ = true;
+    } else {
+      // Don't hide any bars
+      if (started_)
+        move_up(static_cast<int>(total_count_));
+      for (auto &bar : bars_) {
+        bar->print_progress(true);
+        std::cout << "\n";
+      }
+      if (!started_)
+        started_ = true;
+    }
+    total_count_ = bars_.size();
+    std::cout << termcolor::reset;
+  }
+};
+
+} // namespace indicators
+
+#endif

include/indicators/font_style.hpp

@@ -0,0 +1,9 @@
+
+#ifndef INDICATORS_FONT_STYLE
+#define INDICATORS_FONT_STYLE
+
+namespace indicators {
+enum class FontStyle { bold, dark, italic, underline, blink, reverse, concealed, crossed };
+}
+
+#endif

include/indicators/indeterminate_progress_bar.hpp

@@ -0,0 +1,239 @@
+
+#ifndef INDICATORS_INDETERMINATE_PROGRESS_BAR
+#define INDICATORS_INDETERMINATE_PROGRESS_BAR
+
+#include <indicators/details/stream_helper.hpp>
+
+#include <algorithm>
+#include <atomic>
+#include <chrono>
+#include <cmath>
+#include <indicators/color.hpp>
+#include <indicators/setting.hpp>
+#include <indicators/terminal_size.hpp>
+#include <iomanip>
+#include <iostream>
+#include <mutex>
+#include <string>
+#include <thread>
+#include <tuple>
+#include <type_traits>
+#include <sstream>
+#include <utility>
+
+namespace indicators {
+
+class IndeterminateProgressBar {
+  using Settings =
+      std::tuple<option::BarWidth, option::PrefixText, option::PostfixText, option::Start,
+                 option::End, option::Fill, option::Lead, option::MaxPostfixTextLen,
+                 option::Completed, option::ForegroundColor, option::FontStyles, option::Stream>;
+
+  enum class Direction { forward, backward };
+
+  Direction direction_{Direction::forward};
+
+public:
+  template <typename... Args,
+            typename std::enable_if<details::are_settings_from_tuple<
+                                        Settings, typename std::decay<Args>::type...>::value,
+                                    void *>::type = nullptr>
+  explicit IndeterminateProgressBar(Args &&... args)
+      : settings_(details::get<details::ProgressBarOption::bar_width>(option::BarWidth{100},
+                                                                      std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::prefix_text>(
+                      option::PrefixText{}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::postfix_text>(
+                      option::PostfixText{}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::start>(option::Start{"["},
+                                                                  std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::end>(option::End{"]"},
+                                                                std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::fill>(option::Fill{"."},
+                                                                 std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::lead>(option::Lead{"<==>"},
+                                                                 std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::max_postfix_text_len>(
+                      option::MaxPostfixTextLen{0}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::completed>(option::Completed{false},
+                                                                      std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::foreground_color>(
+                      option::ForegroundColor{Color::unspecified}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::font_styles>(
+                      option::FontStyles{std::vector<FontStyle>{}}, std::forward<Args>(args)...),
+                  details::get<details::ProgressBarOption::stream>(option::Stream{std::cout},
+                                                                   std::forward<Args>(args)...)) {
+    // starts with [<==>...........]
+    // progress_ = 0
+
+    // ends with   [...........<==>]
+    //             ^^^^^^^^^^^^^^^^^ bar_width
+    //             ^^^^^^^^^^^^ (bar_width - len(lead))
+    // progress_ = bar_width - len(lead)
+    progress_ = 0;
+    max_progress_ = get_value<details::ProgressBarOption::bar_width>() -
+                    get_value<details::ProgressBarOption::lead>().size() +
+                    get_value<details::ProgressBarOption::start>().size() +
+                    get_value<details::ProgressBarOption::end>().size();
+  }
+
+  template <typename T, details::ProgressBarOption id>
+  void set_option(details::Setting<T, id> &&setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = std::move(setting).value;
+  }
+
+  template <typename T, details::ProgressBarOption id>
+  void set_option(const details::Setting<T, id> &setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = setting.value;
+  }
+
+  void set_option(
+      const details::Setting<std::string, details::ProgressBarOption::postfix_text> &setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() = setting.value;
+    if (setting.value.length() > get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() = setting.value.length();
+    }
+  }
+
+  void
+  set_option(details::Setting<std::string, details::ProgressBarOption::postfix_text> &&setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() = std::move(setting).value;
+    auto &new_value = get_value<details::ProgressBarOption::postfix_text>();
+    if (new_value.length() > get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() = new_value.length();
+    }
+  }
+
+  void tick() {
+    {
+      std::lock_guard<std::mutex> lock{mutex_};
+      if (get_value<details::ProgressBarOption::completed>())
+        return;
+
+      progress_ += (direction_ == Direction::forward) ? 1 : -1;
+      if (direction_ == Direction::forward && progress_ == max_progress_) {
+        // time to go back
+        direction_ = Direction::backward;
+      } else if (direction_ == Direction::backward && progress_ == 0) {
+        direction_ = Direction::forward;
+      }
+    }
+    print_progress();
+  }
+
+  bool is_completed() { return get_value<details::ProgressBarOption::completed>(); }
+
+  void mark_as_completed() {
+    get_value<details::ProgressBarOption::completed>() = true;
+    print_progress();
+  }
+
+private:
+  template <details::ProgressBarOption id>
+  auto get_value() -> decltype((details::get_value<id>(std::declval<Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
+
+  template <details::ProgressBarOption id>
+  auto get_value() const
+      -> decltype((details::get_value<id>(std::declval<const Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
+
+  size_t progress_{0};
+  size_t max_progress_;
+  Settings settings_;
+  std::chrono::nanoseconds elapsed_;
+  std::mutex mutex_;
+
+  template <typename Indicator, size_t count> friend class MultiProgress;
+  template <typename Indicator> friend class DynamicProgress;
+  std::atomic<bool> multi_progress_mode_{false};
+
+  std::pair<std::string, int> get_prefix_text() {
+    std::stringstream os;
+    os << get_value<details::ProgressBarOption::prefix_text>();
+    const auto result = os.str();
+    const auto result_size = unicode::display_width(result);
+    return {result, result_size};
+  }
+
+  std::pair<std::string, int> get_postfix_text() {
+    std::stringstream os;
+    os << " " << get_value<details::ProgressBarOption::postfix_text>();
+
+    const auto result = os.str();
+    const auto result_size = unicode::display_width(result);
+    return {result, result_size};
+  }
+
+public:
+  void print_progress(bool from_multi_progress = false) {
+    std::lock_guard<std::mutex> lock{mutex_};
+
+    auto &os = get_value<details::ProgressBarOption::stream>();
+
+    if (multi_progress_mode_ && !from_multi_progress) {
+      return;
+    }
+    if (get_value<details::ProgressBarOption::foreground_color>() != Color::unspecified)
+      details::set_stream_color(os, get_value<details::ProgressBarOption::foreground_color>());
+
+    for (auto &style : get_value<details::ProgressBarOption::font_styles>())
+      details::set_font_style(os, style);
+
+    const auto prefix_pair = get_prefix_text();
+    const auto prefix_text = prefix_pair.first;
+    const auto prefix_length = prefix_pair.second;
+    os << "\r" << prefix_text;
+
+    os << get_value<details::ProgressBarOption::start>();
+
+    details::IndeterminateProgressScaleWriter writer{
+        os, get_value<details::ProgressBarOption::bar_width>(),
+        get_value<details::ProgressBarOption::fill>(),
+        get_value<details::ProgressBarOption::lead>()};
+    writer.write(progress_);
+
+    os << get_value<details::ProgressBarOption::end>();
+
+    const auto postfix_pair = get_postfix_text();
+    const auto postfix_text = postfix_pair.first;
+    const auto postfix_length = postfix_pair.second;
+    os << postfix_text;
+
+    // Get length of prefix text and postfix text
+    const auto start_length = get_value<details::ProgressBarOption::start>().size();
+    const auto bar_width = get_value<details::ProgressBarOption::bar_width>();
+    const auto end_length = get_value<details::ProgressBarOption::end>().size();
+    const auto terminal_width = terminal_size().second;
+    // prefix + bar_width + postfix should be <= terminal_width
+    const int remaining = terminal_width - (prefix_length + start_length + bar_width + end_length + postfix_length);
+    if (prefix_length == -1 || postfix_length == -1) {
+      os << "\r";
+    } else if (remaining > 0) {
+      os << std::string(remaining, ' ') << "\r";
+    } else if (remaining < 0) {
+      // Do nothing. Maybe in the future truncate postfix with ...
+    }
+    os.flush();
+
+    if (get_value<details::ProgressBarOption::completed>() &&
+        !from_multi_progress) // Don't std::endl if calling from MultiProgress
+      os << termcolor::reset << std::endl;
+  }
+};
+
+} // namespace indicators
+
+#endif

include/indicators/multi_progress.hpp

@@ -0,0 +1,82 @@
+
+#ifndef INDICATORS_MULTI_PROGRESS
+#define INDICATORS_MULTI_PROGRESS
+#include <atomic>
+#include <functional>
+#include <iostream>
+#include <mutex>
+#include <vector>
+
+#include <indicators/color.hpp>
+#include <indicators/cursor_movement.hpp>
+#include <indicators/details/stream_helper.hpp>
+
+namespace indicators {
+
+template <typename Indicator, size_t count> class MultiProgress {
+public:
+  template <typename... Indicators,
+            typename = typename std::enable_if<(sizeof...(Indicators) == count)>::type>
+  explicit MultiProgress(Indicators &... bars) {
+    bars_ = {bars...};
+    for (auto &bar : bars_) {
+      bar.get().multi_progress_mode_ = true;
+    }
+  }
+
+  template <size_t index>
+  typename std::enable_if<(index >= 0 && index < count), void>::type set_progress(size_t value) {
+    if (!bars_[index].get().is_completed())
+      bars_[index].get().set_progress(value);
+    print_progress();
+  }
+
+  template <size_t index>
+  typename std::enable_if<(index >= 0 && index < count), void>::type set_progress(float value) {
+    if (!bars_[index].get().is_completed())
+      bars_[index].get().set_progress(value);
+    print_progress();
+  }
+
+  template <size_t index>
+  typename std::enable_if<(index >= 0 && index < count), void>::type tick() {
+    if (!bars_[index].get().is_completed())
+      bars_[index].get().tick();
+    print_progress();
+  }
+
+  template <size_t index>
+  typename std::enable_if<(index >= 0 && index < count), bool>::type is_completed() const {
+    return bars_[index].get().is_completed();
+  }
+
+private:
+  std::atomic<bool> started_{false};
+  std::mutex mutex_;
+  std::vector<std::reference_wrapper<Indicator>> bars_;
+
+  bool _all_completed() {
+    bool result{true};
+    for (size_t i = 0; i < count; ++i)
+      result &= bars_[i].get().is_completed();
+    return result;
+  }
+
+public:
+  void print_progress() {
+    std::lock_guard<std::mutex> lock{mutex_};
+    if (started_)
+      move_up(count);
+    for (auto &bar : bars_) {
+      bar.get().print_progress(true);
+      std::cout << "\n";
+    }
+    std::cout << termcolor::reset;
+    if (!started_)
+      started_ = true;
+  }
+};
+
+} // namespace indicators
+
+#endif

include/indicators/progress_bar.hpp

@@ -1,256 +1,362 @@
-/*
-Activity Indicators for Modern C++
-https://github.com/p-ranav/indicators
 
-Licensed under the MIT License <http://opensource.org/licenses/MIT>.
-SPDX-License-Identifier: MIT
-Copyright (c) 2019 Pranav Srinivas Kumar <pranav.srinivas.kumar@gmail.com>.
+#ifndef INDICATORS_PROGRESS_BAR
+#define INDICATORS_PROGRESS_BAR
 
-Permission is hereby  granted, free of charge, to any  person obtaining a copy
-of this software and associated  documentation files (the "Software"), to deal
-in the Software  without restriction, including without  limitation the rights
-to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
-copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
-furnished to do so, subject to the following conditions:
+#include <indicators/details/stream_helper.hpp>
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
-IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
-FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
-AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
-LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-*/
-#pragma once
-#define NOMINMAX
 #include <algorithm>
 #include <atomic>
 #include <chrono>
 #include <cmath>
 #include <indicators/color.hpp>
+#include <indicators/setting.hpp>
+#include <indicators/terminal_size.hpp>
 #include <iomanip>
 #include <iostream>
+#include <sstream>
 #include <mutex>
 #include <string>
 #include <thread>
+#include <tuple>
+#include <type_traits>
+#include <utility>
 
 namespace indicators {
 
 class ProgressBar {
+  using Settings =
+      std::tuple<option::BarWidth, option::PrefixText, option::PostfixText,
+                 option::Start, option::End, option::Fill, option::Lead,
+                 option::Remainder, option::MaxPostfixTextLen,
+                 option::Completed, option::ShowPercentage,
+                 option::ShowElapsedTime, option::ShowRemainingTime,
+                 option::SavedStartTime, option::ForegroundColor,
+                 option::FontStyles, option::MinProgress, option::MaxProgress,
+                 option::ProgressType, option::Stream>;
+
 public:
-  void set_foreground_color(Color color) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _foreground_color = color;
+  template <typename... Args,
+            typename std::enable_if<
+                details::are_settings_from_tuple<
+                    Settings, typename std::decay<Args>::type...>::value,
+                void *>::type = nullptr>
+  explicit ProgressBar(Args &&... args)
+      : settings_(
+            details::get<details::ProgressBarOption::bar_width>(
+                option::BarWidth{100}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::prefix_text>(
+                option::PrefixText{}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::postfix_text>(
+                option::PostfixText{}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::start>(
+                option::Start{"["}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::end>(
+                option::End{"]"}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::fill>(
+                option::Fill{"="}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::lead>(
+                option::Lead{">"}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::remainder>(
+                option::Remainder{" "}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::max_postfix_text_len>(
+                option::MaxPostfixTextLen{0}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::completed>(
+                option::Completed{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::show_percentage>(
+                option::ShowPercentage{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::show_elapsed_time>(
+                option::ShowElapsedTime{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::show_remaining_time>(
+                option::ShowRemainingTime{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::saved_start_time>(
+                option::SavedStartTime{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::foreground_color>(
+                option::ForegroundColor{Color::unspecified},
+                std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::font_styles>(
+                option::FontStyles{std::vector<FontStyle>{}},
+                std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::min_progress>(
+                option::MinProgress{0}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::max_progress>(
+                option::MaxProgress{100}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::progress_type>(
+                option::ProgressType{ProgressType::incremental},
+                std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::stream>(
+                option::Stream{std::cout}, std::forward<Args>(args)...)) {
+
+    // if progress is incremental, start from min_progress
+    // else start from max_progress
+    const auto type = get_value<details::ProgressBarOption::progress_type>();
+    if (type == ProgressType::incremental)
+      progress_ = get_value<details::ProgressBarOption::min_progress>();
+    else
+      progress_ = get_value<details::ProgressBarOption::max_progress>();
   }
 
-  void set_bar_width(size_t bar_width) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _bar_width = bar_width;
+  template <typename T, details::ProgressBarOption id>
+  void set_option(details::Setting<T, id> &&setting) {
+    static_assert(
+        !std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                             std::declval<Settings>()))>::type>::value,
+        "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = std::move(setting).value;
   }
 
-  void start_bar_with(const std::string &start) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _start = start;
+  template <typename T, details::ProgressBarOption id>
+  void set_option(const details::Setting<T, id> &setting) {
+    static_assert(
+        !std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                             std::declval<Settings>()))>::type>::value,
+        "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = setting.value;
   }
 
-  void fill_bar_progress_with(const std::string &fill) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _fill = fill;
-  }
-
-  void lead_bar_progress_with(const std::string &lead) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _lead = lead;
-  }
-
-  void fill_bar_remainder_with(const std::string &remainder) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _remainder = remainder;
-  }
-
-  void end_bar_with(const std::string &end) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _end = end;
-  }
-
-  void set_prefix_text(const std::string &text) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _prefix_text = text;
-  }
-
-  void set_postfix_text(const std::string &text) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _postfix_text = text;
-    if (_postfix_text.length() > _max_postfix_text_length)
-      _max_postfix_text_length = _postfix_text.length();
-  }
-
-  void show_percentage() { _show_percentage = true; }
-
-  void hide_percentage() { _show_percentage = false; }
-
-  void show_elapsed_time() { _show_elapsed_time = true; }
-
-  void hide_elapsed_time() { _show_elapsed_time = false; }
-
-  void show_remaining_time() { _show_remaining_time = true; }
-
-  void hide_remaining_time() { _show_remaining_time = false; }
-
-  void set_progress(float value) {
-    {
-      std::unique_lock<std::mutex> lock{_mutex};
-      _progress = value;
+  void
+  set_option(const details::Setting<
+             std::string, details::ProgressBarOption::postfix_text> &setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() = setting.value;
+    if (setting.value.length() >
+        get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() =
+          setting.value.length();
     }
-    _save_start_time();
-    _print_progress();
+  }
+
+  void set_option(
+      details::Setting<std::string, details::ProgressBarOption::postfix_text>
+          &&setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() =
+        std::move(setting).value;
+    auto &new_value = get_value<details::ProgressBarOption::postfix_text>();
+    if (new_value.length() >
+        get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() =
+          new_value.length();
+    }
+  }
+
+  void set_progress(size_t new_progress) {
+    {
+      std::lock_guard<std::mutex> lock(mutex_);
+      progress_ = new_progress;
+    }
+
+    save_start_time();
+    print_progress();
   }
 
   void tick() {
     {
-      std::unique_lock<std::mutex> lock{_mutex};
-      _progress += 1;
+      std::lock_guard<std::mutex> lock{mutex_};
+      const auto type = get_value<details::ProgressBarOption::progress_type>();
+      if (type == ProgressType::incremental)
+        progress_ += 1;
+      else
+        progress_ -= 1;
     }
-    _save_start_time();
-    _print_progress();
+    save_start_time();
+    print_progress();
   }
 
-  size_t current() { return std::min(static_cast<size_t>(_progress), size_t(100)); }
+  size_t current() {
+    std::lock_guard<std::mutex> lock{mutex_};
+    return (std::min)(
+        progress_,
+        size_t(get_value<details::ProgressBarOption::max_progress>()));
+  }
 
-  bool is_completed() const { return _completed; }
+  bool is_completed() const {
+    return get_value<details::ProgressBarOption::completed>();
+  }
 
   void mark_as_completed() {
-    _completed = true;
-    _print_progress();
+    get_value<details::ProgressBarOption::completed>() = true;
+    print_progress();
   }
 
 private:
-  float _progress{0.0};
-  size_t _bar_width{100};
-  std::string _prefix_text{""};
-  std::string _start{"["};
-  std::string _fill{"="};
-  std::string _lead{">"};
-  std::string _remainder{" "};
-  std::string _end{"]"};
-  std::string _postfix_text{""};
-  std::atomic<size_t> _max_postfix_text_length{0};
-  std::atomic<bool> _completed{false};
-  std::atomic<bool> _show_percentage{true};
-  std::atomic<bool> _show_elapsed_time{false};
-  std::atomic<bool> _show_remaining_time{false};
-  std::atomic<bool> _saved_start_time{false};
-  std::chrono::time_point<std::chrono::high_resolution_clock> _start_time_point;
-  std::mutex _mutex;
-  Color _foreground_color;
+  template <details::ProgressBarOption id>
+  auto get_value()
+      -> decltype((details::get_value<id>(std::declval<Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
 
-  std::ostream &_print_duration(std::ostream &os, std::chrono::nanoseconds ns) {
-    using namespace std;
-    using namespace std::chrono;
-    typedef duration<int, ratio<86400>> days;
-    char fill = os.fill();
-    os.fill('0');
-    auto d = duration_cast<days>(ns);
-    ns -= d;
-    auto h = duration_cast<hours>(ns);
-    ns -= h;
-    auto m = duration_cast<minutes>(ns);
-    ns -= m;
-    auto s = duration_cast<seconds>(ns);
-    if (d.count() > 0)
-      os << setw(2) << d.count() << "d:";
-    if (h.count() > 0)
-      os << setw(2) << h.count() << "h:";
-    os << setw(2) << m.count() << "m:" << setw(2) << s.count() << 's';
-    os.fill(fill);
-    return os;
-  };
+  template <details::ProgressBarOption id>
+  auto get_value() const -> decltype(
+      (details::get_value<id>(std::declval<const Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
 
-  void _save_start_time() {
-    if ((_show_elapsed_time || _show_remaining_time) && !_saved_start_time) {
-      _start_time_point = std::chrono::high_resolution_clock::now();
-      _saved_start_time = true;
+  size_t progress_{0};
+  Settings settings_;
+  std::chrono::nanoseconds elapsed_;
+  std::chrono::time_point<std::chrono::high_resolution_clock> start_time_point_;
+  std::mutex mutex_;
+
+  template <typename Indicator, size_t count> friend class MultiProgress;
+  template <typename Indicator> friend class DynamicProgress;
+  std::atomic<bool> multi_progress_mode_{false};
+
+  void save_start_time() {
+    auto &show_elapsed_time =
+        get_value<details::ProgressBarOption::show_elapsed_time>();
+    auto &saved_start_time =
+        get_value<details::ProgressBarOption::saved_start_time>();
+    auto &show_remaining_time =
+        get_value<details::ProgressBarOption::show_remaining_time>();
+    if ((show_elapsed_time || show_remaining_time) && !saved_start_time) {
+      start_time_point_ = std::chrono::high_resolution_clock::now();
+      saved_start_time = true;
     }
   }
 
-  void _print_progress() {
-    std::unique_lock<std::mutex> lock{_mutex};
+  std::pair<std::string, int> get_prefix_text() {
+    std::stringstream os;
+    os << get_value<details::ProgressBarOption::prefix_text>();
+    const auto result = os.str();
+    const auto result_size = unicode::display_width(result);
+    return {result, result_size};
+  }
+
+  std::pair<std::string, int> get_postfix_text() {
+    std::stringstream os;
+    const auto max_progress =
+        get_value<details::ProgressBarOption::max_progress>();
+
+    if (get_value<details::ProgressBarOption::show_percentage>()) {
+      os << " "
+         << (std::min)(static_cast<size_t>(static_cast<float>(progress_) /
+                                         max_progress * 100),
+                     size_t(100))
+         << "%";
+    }
+
+    auto &saved_start_time =
+        get_value<details::ProgressBarOption::saved_start_time>();
+
+    if (get_value<details::ProgressBarOption::show_elapsed_time>()) {
+      os << " [";
+      if (saved_start_time)
+        details::write_duration(os, elapsed_);
+      else
+        os << "00:00s";
+    }
+
+    if (get_value<details::ProgressBarOption::show_remaining_time>()) {
+      if (get_value<details::ProgressBarOption::show_elapsed_time>())
+        os << "<";
+      else
+        os << " [";
+
+      if (saved_start_time) {
+        auto eta = std::chrono::nanoseconds(
+            progress_ > 0
+                ? static_cast<long long>(std::ceil(float(elapsed_.count()) *
+                                                   max_progress / progress_))
+                : 0);
+        auto remaining = eta > elapsed_ ? (eta - elapsed_) : (elapsed_ - eta);
+        details::write_duration(os, remaining);
+      } else {
+        os << "00:00s";
+      }
+
+      os << "]";
+    } else {
+      if (get_value<details::ProgressBarOption::show_elapsed_time>())
+        os << "]";
+    }
+
+    os << " " << get_value<details::ProgressBarOption::postfix_text>();
+
+    const auto result = os.str();
+    const auto result_size = unicode::display_width(result);
+    return {result, result_size};
+  }
+
+public:
+  void print_progress(bool from_multi_progress = false) {
+    std::lock_guard<std::mutex> lock{mutex_};
+
+    auto &os = get_value<details::ProgressBarOption::stream>();
+
+    const auto type = get_value<details::ProgressBarOption::progress_type>();
+    const auto min_progress =
+        get_value<details::ProgressBarOption::min_progress>();
+    const auto max_progress =
+        get_value<details::ProgressBarOption::max_progress>();
+    if (multi_progress_mode_ && !from_multi_progress) {
+      if ((type == ProgressType::incremental && progress_ >= max_progress) ||
+          (type == ProgressType::decremental && progress_ <= min_progress)) {
+        get_value<details::ProgressBarOption::completed>() = true;
+      }
+      return;
+    }
     auto now = std::chrono::high_resolution_clock::now();
-    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(now - _start_time_point);
+    if (!get_value<details::ProgressBarOption::completed>())
+      elapsed_ = std::chrono::duration_cast<std::chrono::nanoseconds>(
+          now - start_time_point_);
 
-    std::cout << termcolor::bold;
-    switch (_foreground_color) {
-    case Color::GREY:
-      std::cout << termcolor::grey;
-      break;
-    case Color::RED:
-      std::cout << termcolor::red;
-      break;
-    case Color::GREEN:
-      std::cout << termcolor::green;
-      break;
-    case Color::YELLOW:
-      std::cout << termcolor::yellow;
-      break;
-    case Color::BLUE:
-      std::cout << termcolor::blue;
-      break;
-    case Color::MAGENTA:
-      std::cout << termcolor::magenta;
-      break;
-    case Color::CYAN:
-      std::cout << termcolor::cyan;
-      break;
-    case Color::WHITE:
-      std::cout << termcolor::white;
-      break;
-    }
-    std::cout << _prefix_text;
-    std::cout << _start;
-    auto pos = static_cast<size_t>(_progress * static_cast<float>(_bar_width) / 100.0);
-    for (size_t i = 0; i < _bar_width; ++i) {
-      if (i < pos)
-        std::cout << _fill;
-      else if (i == pos)
-        std::cout << _lead;
-      else
-        std::cout << _remainder;
-    }
-    std::cout << _end;
-    if (_show_percentage) {
-      std::cout << " " << std::min(static_cast<size_t>(_progress), size_t(100)) << "%";
-    }
+    if (get_value<details::ProgressBarOption::foreground_color>() !=
+        Color::unspecified)
+      details::set_stream_color(
+          os, get_value<details::ProgressBarOption::foreground_color>());
 
-    if (_show_elapsed_time) {
-      std::cout << " [";
-      _print_duration(std::cout, elapsed);
-    }
+    for (auto &style : get_value<details::ProgressBarOption::font_styles>())
+      details::set_font_style(os, style);
 
-    if (_show_remaining_time) {
-      if (_show_elapsed_time)
-        std::cout << "<";
-      else
-        std::cout << " [";
-      auto eta = std::chrono::nanoseconds(
-          _progress > 0 ? static_cast<long long>(elapsed.count() * 100 / _progress) : 0);
-      auto remaining = eta > elapsed ? (eta - elapsed) : (elapsed - eta);
-      _print_duration(std::cout, remaining);
-      std::cout << "]";
-    }
+    const auto prefix_pair = get_prefix_text();
+    const auto prefix_text = prefix_pair.first;
+    const auto prefix_length = prefix_pair.second;
+    os << "\r" << prefix_text;
 
-    if (_max_postfix_text_length == 0)
-      _max_postfix_text_length = 10;
-    std::cout << " " << _postfix_text << std::string(_max_postfix_text_length, ' ') << "\r";
-    std::cout.flush();
-    if (_progress > 100.0) {
-      _completed = true;
+    os << get_value<details::ProgressBarOption::start>();
+
+    details::ProgressScaleWriter writer{
+        os, get_value<details::ProgressBarOption::bar_width>(),
+        get_value<details::ProgressBarOption::fill>(),
+        get_value<details::ProgressBarOption::lead>(),
+        get_value<details::ProgressBarOption::remainder>()};
+    writer.write(double(progress_) / double(max_progress) * 100.0f);
+
+    os << get_value<details::ProgressBarOption::end>();
+
+    const auto postfix_pair = get_postfix_text();
+    const auto postfix_text = postfix_pair.first;
+    const auto postfix_length = postfix_pair.second;
+    os << postfix_text;
+
+    // Get length of prefix text and postfix text
+    const auto start_length = get_value<details::ProgressBarOption::start>().size();
+    const auto bar_width = get_value<details::ProgressBarOption::bar_width>();
+    const auto end_length = get_value<details::ProgressBarOption::end>().size();
+    const auto terminal_width = terminal_size().second;
+    // prefix + bar_width + postfix should be <= terminal_width
+    const int remaining = terminal_width - (prefix_length + start_length + bar_width + end_length + postfix_length);
+    if (prefix_length == -1 || postfix_length == -1) {
+      os << "\r";
+    } else if (remaining > 0) {
+      os << std::string(remaining, ' ') << "\r";
+    } else if (remaining < 0) {
+      // Do nothing. Maybe in the future truncate postfix with ...
     }
-    if (_completed)
-      std::cout << termcolor::reset << std::endl;
+    os.flush();
+
+    if ((type == ProgressType::incremental && progress_ >= max_progress) ||
+        (type == ProgressType::decremental && progress_ <= min_progress)) {
+      get_value<details::ProgressBarOption::completed>() = true;
+    }
+    if (get_value<details::ProgressBarOption::completed>() &&
+        !from_multi_progress) // Don't std::endl if calling from MultiProgress
+      os << termcolor::reset << std::endl;
   }
 };
 
 } // namespace indicators
+
+#endif

include/indicators/progress_spinner.hpp

@@ -1,225 +1,227 @@
-/*
-Activity Indicators for Modern C++
-https://github.com/p-ranav/indicators
 
-Licensed under the MIT License <http://opensource.org/licenses/MIT>.
-SPDX-License-Identifier: MIT
-Copyright (c) 2019 Pranav Srinivas Kumar <pranav.srinivas.kumar@gmail.com>.
+#ifndef INDICATORS_PROGRESS_SPINNER
+#define INDICATORS_PROGRESS_SPINNER
 
-Permission is hereby  granted, free of charge, to any  person obtaining a copy
-of this software and associated  documentation files (the "Software"), to deal
-in the Software  without restriction, including without  limitation the rights
-to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
-copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
-furnished to do so, subject to the following conditions:
+#include <indicators/details/stream_helper.hpp>
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
-IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
-FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
-AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
-LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-*/
-#pragma once
-#define NOMINMAX
 #include <algorithm>
 #include <atomic>
 #include <chrono>
 #include <cmath>
 #include <indicators/color.hpp>
+#include <indicators/setting.hpp>
 #include <iomanip>
 #include <iostream>
 #include <mutex>
 #include <string>
 #include <thread>
+#include <tuple>
 #include <vector>
 
 namespace indicators {
 
 class ProgressSpinner {
+  using Settings =
+      std::tuple<option::ForegroundColor, option::PrefixText, option::PostfixText,
+                 option::ShowPercentage, option::ShowElapsedTime, option::ShowRemainingTime,
+                 option::ShowSpinner, option::SavedStartTime, option::Completed,
+                 option::MaxPostfixTextLen, option::SpinnerStates, option::FontStyles,
+                 option::MaxProgress, option::Stream>;
+
 public:
-  void set_foreground_color(Color color) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _foreground_color = color;
+  template <typename... Args,
+            typename std::enable_if<details::are_settings_from_tuple<
+                                        Settings, typename std::decay<Args>::type...>::value,
+                                    void *>::type = nullptr>
+  explicit ProgressSpinner(Args &&... args)
+      : settings_(
+            details::get<details::ProgressBarOption::foreground_color>(
+                option::ForegroundColor{Color::unspecified}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::prefix_text>(option::PrefixText{},
+                                                                  std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::postfix_text>(option::PostfixText{},
+                                                                   std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::show_percentage>(option::ShowPercentage{true},
+                                                                      std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::show_elapsed_time>(
+                option::ShowElapsedTime{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::show_remaining_time>(
+                option::ShowRemainingTime{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::spinner_show>(option::ShowSpinner{true},
+                                                                   std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::saved_start_time>(
+                option::SavedStartTime{false}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::completed>(option::Completed{false},
+                                                                std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::max_postfix_text_len>(
+                option::MaxPostfixTextLen{0}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::spinner_states>(
+                option::SpinnerStates{
+                    std::vector<std::string>{"⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"}},
+                std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::font_styles>(
+                option::FontStyles{std::vector<FontStyle>{}}, std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::max_progress>(option::MaxProgress{100},
+                                                                   std::forward<Args>(args)...),
+            details::get<details::ProgressBarOption::stream>(option::Stream{std::cout},
+                                                             std::forward<Args>(args)...)) {}
+
+  template <typename T, details::ProgressBarOption id>
+  void set_option(details::Setting<T, id> &&setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = std::move(setting).value;
   }
 
-  void set_prefix_text(const std::string &text) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _prefix_text = text;
+  template <typename T, details::ProgressBarOption id>
+  void set_option(const details::Setting<T, id> &setting) {
+    static_assert(!std::is_same<T, typename std::decay<decltype(details::get_value<id>(
+                                       std::declval<Settings>()))>::type>::value,
+                  "Setting has wrong type!");
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<id>() = setting.value;
   }
 
-  void set_postfix_text(const std::string &text) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _postfix_text = text;
-    if (_postfix_text.length() > _max_postfix_text_length)
-      _max_postfix_text_length = _postfix_text.length();
-  }
-
-  void show_percentage() { _show_percentage = true; }
-
-  void hide_percentage() { _show_percentage = false; }
-
-  void show_elapsed_time() { _show_elapsed_time = true; }
-
-  void hide_elapsed_time() { _show_elapsed_time = false; }
-
-  void show_remaining_time() { _show_remaining_time = true; }
-
-  void hide_remaining_time() { _show_remaining_time = false; }
-
-  void show_spinner() { _show_spinner = true; }
-
-  void hide_spinner() { _show_spinner = false; }
-
-  void set_progress(float value) {
-    {
-      std::unique_lock<std::mutex> lock{_mutex};
-      _progress = value;
+  void set_option(
+      const details::Setting<std::string, details::ProgressBarOption::postfix_text> &setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() = setting.value;
+    if (setting.value.length() > get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() = setting.value.length();
     }
-    _save_start_time();
-    _print_progress();
+  }
+
+  void
+  set_option(details::Setting<std::string, details::ProgressBarOption::postfix_text> &&setting) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    get_value<details::ProgressBarOption::postfix_text>() = std::move(setting).value;
+    auto &new_value = get_value<details::ProgressBarOption::postfix_text>();
+    if (new_value.length() > get_value<details::ProgressBarOption::max_postfix_text_len>()) {
+      get_value<details::ProgressBarOption::max_postfix_text_len>() = new_value.length();
+    }
+  }
+
+  void set_progress(size_t value) {
+    {
+      std::lock_guard<std::mutex> lock{mutex_};
+      progress_ = value;
+    }
+    save_start_time();
+    print_progress();
   }
 
   void tick() {
     {
-      std::unique_lock<std::mutex> lock{_mutex};
-      _progress += 1;
+      std::lock_guard<std::mutex> lock{mutex_};
+      progress_ += 1;
     }
-    _save_start_time();
-    _print_progress();
+    save_start_time();
+    print_progress();
   }
 
-  size_t current() { return std::min(static_cast<size_t>(_progress), size_t(100)); }
+  size_t current() {
+    std::lock_guard<std::mutex> lock{mutex_};
+    return (std::min)(progress_, size_t(get_value<details::ProgressBarOption::max_progress>()));
+  }
 
-  bool is_completed() const { return _completed; }
+  bool is_completed() const { return get_value<details::ProgressBarOption::completed>(); }
 
   void mark_as_completed() {
-    _completed = true;
-    _print_progress();
-  }
-
-  void set_spinner_states(const std::vector<std::string> &states) {
-    std::unique_lock<std::mutex> lock{_mutex};
-    _states = states;
+    get_value<details::ProgressBarOption::completed>() = true;
+    print_progress();
   }
 
 private:
-  float _progress{0.0};
-  std::string _prefix_text{""};
-  size_t _index{0};
-  std::vector<std::string> _states{"⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"};
-  std::string _postfix_text{""};
-  std::atomic<size_t> _max_postfix_text_length{0};
-  std::atomic<bool> _completed{false};
-  std::atomic<bool> _show_percentage{true};
-  std::atomic<bool> _show_elapsed_time{false};
-  std::atomic<bool> _show_remaining_time{false};
-  std::atomic<bool> _saved_start_time{false};
-  std::chrono::time_point<std::chrono::high_resolution_clock> _start_time_point;
-  std::atomic<bool> _show_spinner{true};
-  std::mutex _mutex;
-  Color _foreground_color;
+  Settings settings_;
+  size_t progress_{0};
+  size_t index_{0};
+  std::chrono::time_point<std::chrono::high_resolution_clock> start_time_point_;
+  std::mutex mutex_;
 
-  std::ostream &_print_duration(std::ostream &os, std::chrono::nanoseconds ns) {
-    using namespace std;
-    using namespace std::chrono;
-    typedef duration<int, ratio<86400>> days;
-    char fill = os.fill();
-    os.fill('0');
-    auto d = duration_cast<days>(ns);
-    ns -= d;
-    auto h = duration_cast<hours>(ns);
-    ns -= h;
-    auto m = duration_cast<minutes>(ns);
-    ns -= m;
-    auto s = duration_cast<seconds>(ns);
-    if (d.count() > 0)
-      os << setw(2) << d.count() << "d:";
-    if (h.count() > 0)
-      os << setw(2) << h.count() << "h:";
-    os << setw(2) << m.count() << "m:" << setw(2) << s.count() << 's';
-    os.fill(fill);
-    return os;
-  };
+  template <details::ProgressBarOption id>
+  auto get_value() -> decltype((details::get_value<id>(std::declval<Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
 
-  void _save_start_time() {
-    if ((_show_elapsed_time || _show_remaining_time) && !_saved_start_time) {
-      _start_time_point = std::chrono::high_resolution_clock::now();
-      _saved_start_time = true;
+  template <details::ProgressBarOption id>
+  auto get_value() const
+      -> decltype((details::get_value<id>(std::declval<const Settings &>()).value)) {
+    return details::get_value<id>(settings_).value;
+  }
+
+  void save_start_time() {
+    auto &show_elapsed_time = get_value<details::ProgressBarOption::show_elapsed_time>();
+    auto &show_remaining_time = get_value<details::ProgressBarOption::show_remaining_time>();
+    auto &saved_start_time = get_value<details::ProgressBarOption::saved_start_time>();
+    if ((show_elapsed_time || show_remaining_time) && !saved_start_time) {
+      start_time_point_ = std::chrono::high_resolution_clock::now();
+      saved_start_time = true;
     }
   }
 
-  void _print_progress() {
-    std::unique_lock<std::mutex> lock{_mutex};
+public:
+  void print_progress() {
+    std::lock_guard<std::mutex> lock{mutex_};
+
+    auto &os = get_value<details::ProgressBarOption::stream>();
+
+    const auto max_progress = get_value<details::ProgressBarOption::max_progress>();
     auto now = std::chrono::high_resolution_clock::now();
-    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(now - _start_time_point);
+    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(now - start_time_point_);
 
-    std::cout << termcolor::bold;
-    switch (_foreground_color) {
-    case Color::GREY:
-      std::cout << termcolor::grey;
-      break;
-    case Color::RED:
-      std::cout << termcolor::red;
-      break;
-    case Color::GREEN:
-      std::cout << termcolor::green;
-      break;
-    case Color::YELLOW:
-      std::cout << termcolor::yellow;
-      break;
-    case Color::BLUE:
-      std::cout << termcolor::blue;
-      break;
-    case Color::MAGENTA:
-      std::cout << termcolor::magenta;
-      break;
-    case Color::CYAN:
-      std::cout << termcolor::cyan;
-      break;
-    case Color::WHITE:
-      std::cout << termcolor::white;
-      break;
-    }
-    std::cout << _prefix_text;
-    if (_show_spinner)
-      std::cout << _states[_index % _states.size()];
-    if (_show_percentage) {
-      std::cout << " " << std::min(static_cast<size_t>(_progress), size_t(100)) << "%";
+    if (get_value<details::ProgressBarOption::foreground_color>() != Color::unspecified)
+      details::set_stream_color(os, get_value<details::ProgressBarOption::foreground_color>());
+
+    for (auto &style : get_value<details::ProgressBarOption::font_styles>())
+      details::set_font_style(os, style);
+
+    os << get_value<details::ProgressBarOption::prefix_text>();
+    if (get_value<details::ProgressBarOption::spinner_show>())
+      os << get_value<details::ProgressBarOption::spinner_states>()
+              [index_ % get_value<details::ProgressBarOption::spinner_states>().size()];
+    if (get_value<details::ProgressBarOption::show_percentage>()) {
+      os << " " << std::size_t(progress_ / double(max_progress) * 100) << "%";
     }
 
-    if (_show_elapsed_time) {
-      std::cout << " [";
-      _print_duration(std::cout, elapsed);
+    if (get_value<details::ProgressBarOption::show_elapsed_time>()) {
+      os << " [";
+      details::write_duration(os, elapsed);
     }
 
-    if (_show_remaining_time) {
-      if (_show_elapsed_time)
-        std::cout << "<";
+    if (get_value<details::ProgressBarOption::show_remaining_time>()) {
+      if (get_value<details::ProgressBarOption::show_elapsed_time>())
+        os << "<";
       else
-        std::cout << " [";
+        os << " [";
       auto eta = std::chrono::nanoseconds(
-          _progress > 0 ? static_cast<long long>(elapsed.count() * 100 / _progress) : 0);
+          progress_ > 0
+              ? static_cast<long long>(std::ceil(float(elapsed.count()) *
+                                                 max_progress / progress_))
+              : 0);
       auto remaining = eta > elapsed ? (eta - elapsed) : (elapsed - eta);
-      _print_duration(std::cout, remaining);
-      std::cout << "]";
+      details::write_duration(os, remaining);
+      os << "]";
+    } else {
+      if (get_value<details::ProgressBarOption::show_elapsed_time>())
+        os << "]";
     }
 
-    if (_max_postfix_text_length == 0)
-      _max_postfix_text_length = 10;
-    std::cout << " " << _postfix_text << std::string(_max_postfix_text_length, ' ') << "\r";
-    std::cout.flush();
-    _index += 1;
-    if (_progress > 100.0) {
-      _completed = true;
+    if (get_value<details::ProgressBarOption::max_postfix_text_len>() == 0)
+      get_value<details::ProgressBarOption::max_postfix_text_len>() = 10;
+    os << " " << get_value<details::ProgressBarOption::postfix_text>()
+       << std::string(get_value<details::ProgressBarOption::max_postfix_text_len>(), ' ') << "\r";
+    os.flush();
+    index_ += 1;
+    if (progress_ > max_progress) {
+      get_value<details::ProgressBarOption::completed>() = true;
     }
-    if (_completed)
-      std::cout << termcolor::reset << std::endl;
+    if (get_value<details::ProgressBarOption::completed>())
+      os << termcolor::reset << std::endl;
   }
 };
 
 } // namespace indicators
+
+#endif

include/indicators/progress_type.hpp

@@ -0,0 +1,9 @@
+
+#ifndef INDICATORS_PROGRESS_TYPE
+#define INDICATORS_PROGRESS_TYPE
+
+namespace indicators {
+enum class ProgressType { incremental, decremental };
+}
+
+#endif

include/indicators/setting.hpp

@@ -0,0 +1,222 @@
+
+/*
+Activity Indicators for Modern C++
+https://github.com/p-ranav/indicators
+
+Licensed under the MIT License <http://opensource.org/licenses/MIT>.
+SPDX-License-Identifier: MIT
+Copyright (c) 2019 Dawid Pilarski <dawid.pilarski@panicsoftware.com>.
+
+Permission is hereby  granted, free of charge, to any  person obtaining a copy
+of this software and associated  documentation files (the "Software"), to deal
+in the Software  without restriction, including without  limitation the rights
+to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
+copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
+IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
+FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
+AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
+LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#ifndef INDICATORS_SETTING
+#define INDICATORS_SETTING
+
+#include <cstddef>
+#include <indicators/color.hpp>
+#include <indicators/font_style.hpp>
+#include <indicators/progress_type.hpp>
+#include <string>
+#include <tuple>
+#include <type_traits>
+#include <utility>
+#include <vector>
+
+namespace indicators {
+
+namespace details {
+
+template <bool condition> struct if_else;
+
+template <> struct if_else<true> { using type = std::true_type; };
+
+template <> struct if_else<false> { using type = std::false_type; };
+
+template <bool condition, typename True, typename False> struct if_else_type;
+
+template <typename True, typename False> struct if_else_type<true, True, False> {
+  using type = True;
+};
+
+template <typename True, typename False> struct if_else_type<false, True, False> {
+  using type = False;
+};
+
+template <typename... Ops> struct conjuction;
+
+template <> struct conjuction<> : std::true_type {};
+
+template <typename Op, typename... TailOps>
+struct conjuction<Op, TailOps...>
+    : if_else_type<!Op::value, std::false_type, conjuction<TailOps...>>::type {};
+
+template <typename... Ops> struct disjunction;
+
+template <> struct disjunction<> : std::false_type {};
+
+template <typename Op, typename... TailOps>
+struct disjunction<Op, TailOps...>
+    : if_else_type<Op::value, std::true_type, disjunction<TailOps...>>::type {};
+
+enum class ProgressBarOption {
+  bar_width = 0,
+  prefix_text,
+  postfix_text,
+  start,
+  end,
+  fill,
+  lead,
+  remainder,
+  max_postfix_text_len,
+  completed,
+  show_percentage,
+  show_elapsed_time,
+  show_remaining_time,
+  saved_start_time,
+  foreground_color,
+  spinner_show,
+  spinner_states,
+  font_styles,
+  hide_bar_when_complete,
+  min_progress,
+  max_progress,
+  progress_type,
+  stream
+};
+
+template <typename T, ProgressBarOption Id> struct Setting {
+  template <typename... Args,
+            typename = typename std::enable_if<std::is_constructible<T, Args...>::value>::type>
+  explicit Setting(Args &&... args) : value(std::forward<Args>(args)...) {}
+  Setting(const Setting &) = default;
+  Setting(Setting &&) = default;
+
+  static constexpr auto id = Id;
+  using type = T;
+
+  T value{};
+};
+
+template <typename T> struct is_setting : std::false_type {};
+
+template <ProgressBarOption Id, typename T> struct is_setting<Setting<T, Id>> : std::true_type {};
+
+template <typename... Args>
+struct are_settings : if_else<conjuction<is_setting<Args>...>::value>::type {};
+
+template <> struct are_settings<> : std::true_type {};
+
+template <typename Setting, typename Tuple> struct is_setting_from_tuple;
+
+template <typename Setting> struct is_setting_from_tuple<Setting, std::tuple<>> : std::true_type {};
+
+template <typename Setting, typename... TupleTypes>
+struct is_setting_from_tuple<Setting, std::tuple<TupleTypes...>>
+    : if_else<disjunction<std::is_same<Setting, TupleTypes>...>::value>::type {};
+
+template <typename Tuple, typename... Settings>
+struct are_settings_from_tuple
+    : if_else<conjuction<is_setting_from_tuple<Settings, Tuple>...>::value>::type {};
+
+template <ProgressBarOption Id> struct always_true { static constexpr auto value = true; };
+
+template <ProgressBarOption Id, typename Default> Default &&get_impl(Default &&def) {
+  return std::forward<Default>(def);
+}
+
+template <ProgressBarOption Id, typename Default, typename T, typename... Args>
+auto get_impl(Default && /*def*/, T &&first, Args &&... /*tail*/) ->
+    typename std::enable_if<(std::decay<T>::type::id == Id),
+                            decltype(std::forward<T>(first))>::type {
+  return std::forward<T>(first);
+}
+
+template <ProgressBarOption Id, typename Default, typename T, typename... Args>
+auto get_impl(Default &&def, T && /*first*/, Args &&... tail) ->
+    typename std::enable_if<(std::decay<T>::type::id != Id),
+                            decltype(get_impl<Id>(std::forward<Default>(def),
+                                                  std::forward<Args>(tail)...))>::type {
+  return get_impl<Id>(std::forward<Default>(def), std::forward<Args>(tail)...);
+}
+
+template <ProgressBarOption Id, typename Default, typename... Args,
+          typename = typename std::enable_if<are_settings<Args...>::value, void>::type>
+auto get(Default &&def, Args &&... args)
+    -> decltype(details::get_impl<Id>(std::forward<Default>(def), std::forward<Args>(args)...)) {
+  return details::get_impl<Id>(std::forward<Default>(def), std::forward<Args>(args)...);
+}
+
+template <ProgressBarOption Id> using StringSetting = Setting<std::string, Id>;
+
+template <ProgressBarOption Id> using IntegerSetting = Setting<std::size_t, Id>;
+
+template <ProgressBarOption Id> using BooleanSetting = Setting<bool, Id>;
+
+template <ProgressBarOption Id, typename Tuple, std::size_t counter = 0> struct option_idx;
+
+template <ProgressBarOption Id, typename T, typename... Settings, std::size_t counter>
+struct option_idx<Id, std::tuple<T, Settings...>, counter>
+    : if_else_type<(Id == T::id), std::integral_constant<std::size_t, counter>,
+                   option_idx<Id, std::tuple<Settings...>, counter + 1>>::type {};
+
+template <ProgressBarOption Id, std::size_t counter> struct option_idx<Id, std::tuple<>, counter> {
+  static_assert(always_true<(ProgressBarOption)Id>::value, "No such option was found");
+};
+
+template <ProgressBarOption Id, typename Settings>
+auto get_value(Settings &&settings)
+    -> decltype((std::get<option_idx<Id, typename std::decay<Settings>::type>::value>(
+        std::declval<Settings &&>()))) {
+  return std::get<option_idx<Id, typename std::decay<Settings>::type>::value>(
+      std::forward<Settings>(settings));
+}
+
+} // namespace details
+
+namespace option {
+using BarWidth = details::IntegerSetting<details::ProgressBarOption::bar_width>;
+using PrefixText = details::StringSetting<details::ProgressBarOption::prefix_text>;
+using PostfixText = details::StringSetting<details::ProgressBarOption::postfix_text>;
+using Start = details::StringSetting<details::ProgressBarOption::start>;
+using End = details::StringSetting<details::ProgressBarOption::end>;
+using Fill = details::StringSetting<details::ProgressBarOption::fill>;
+using Lead = details::StringSetting<details::ProgressBarOption::lead>;
+using Remainder = details::StringSetting<details::ProgressBarOption::remainder>;
+using MaxPostfixTextLen = details::IntegerSetting<details::ProgressBarOption::max_postfix_text_len>;
+using Completed = details::BooleanSetting<details::ProgressBarOption::completed>;
+using ShowPercentage = details::BooleanSetting<details::ProgressBarOption::show_percentage>;
+using ShowElapsedTime = details::BooleanSetting<details::ProgressBarOption::show_elapsed_time>;
+using ShowRemainingTime = details::BooleanSetting<details::ProgressBarOption::show_remaining_time>;
+using SavedStartTime = details::BooleanSetting<details::ProgressBarOption::saved_start_time>;
+using ForegroundColor = details::Setting<Color, details::ProgressBarOption::foreground_color>;
+using ShowSpinner = details::BooleanSetting<details::ProgressBarOption::spinner_show>;
+using SpinnerStates =
+    details::Setting<std::vector<std::string>, details::ProgressBarOption::spinner_states>;
+using HideBarWhenComplete =
+    details::BooleanSetting<details::ProgressBarOption::hide_bar_when_complete>;
+using FontStyles =
+    details::Setting<std::vector<FontStyle>, details::ProgressBarOption::font_styles>;
+using MinProgress = details::IntegerSetting<details::ProgressBarOption::min_progress>;
+using MaxProgress = details::IntegerSetting<details::ProgressBarOption::max_progress>;
+using ProgressType = details::Setting<ProgressType, details::ProgressBarOption::progress_type>;
+using Stream = details::Setting<std::ostream &, details::ProgressBarOption::stream>;
+} // namespace option
+} // namespace indicators
+
+#endif

include/indicators/terminal_size.hpp

@@ -0,0 +1,44 @@
+
+#ifndef INDICATORS_TERMINAL_SIZE
+#define INDICATORS_TERMINAL_SIZE
+#include <utility>
+
+
+#if defined(_WIN32)
+#include <windows.h>
+
+namespace indicators {
+
+static inline std::pair<size_t, size_t> terminal_size() {
+  CONSOLE_SCREEN_BUFFER_INFO csbi;
+  int cols, rows;
+  GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
+  cols = csbi.srWindow.Right - csbi.srWindow.Left + 1;
+  rows = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
+  return {static_cast<size_t>(rows), static_cast<size_t>(cols)};
+}
+
+static inline size_t terminal_width() { return terminal_size().second; }
+
+} // namespace indicators
+
+#else
+
+#include <sys/ioctl.h> //ioctl() and TIOCGWINSZ
+#include <unistd.h>    // for STDOUT_FILENO
+
+namespace indicators {
+
+static inline std::pair<size_t, size_t> terminal_size() {
+  struct winsize size{};
+  ioctl(STDOUT_FILENO, TIOCGWINSZ, &size);
+  return {static_cast<size_t>(size.ws_row), static_cast<size_t>(size.ws_col)};
+}
+
+static inline size_t terminal_width() { return terminal_size().second; }
+
+} // namespace indicators
+
+#endif
+
+#endif

indicaConfig.cmake.in

@@ -1,9 +0,0 @@
-@PACKAGE_INIT@
-
-include(CMakeFindDependencyMacro)
-
-find_dependency(Threads)
-
-if (NOT TARGET indica::indica)
-  include(${CMAKE_CURRENT_LIST_DIR}/indicaTargets.cmake)
-endif ()

indicators.pc.in

@@ -0,0 +1,7 @@
+includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
+
+Name: @PROJECT_NAME@
+Description: @PROJECT_DESCRIPTION@
+URL: @PROJECT_HOMEPAGE_URL@
+Version: @PROJECT_VERSION@
+Cflags: -I${includedir}

indicatorsConfig.cmake.in

@@ -0,0 +1,9 @@
+@PACKAGE_INIT@
+
+include(CMakeFindDependencyMacro)
+
+find_dependency(Threads REQUIRED)
+
+if (NOT TARGET indicators::indicators)
+  include(${CMAKE_CURRENT_LIST_DIR}/indicatorsTargets.cmake)
+endif ()

samples/CMakeLists.txt

@@ -1,18 +1,49 @@
 
 add_executable(block_progress_bar block_progress_bar.cpp)
-target_link_libraries(block_progress_bar PRIVATE indica::indica)
+target_link_libraries(block_progress_bar PRIVATE indicators::indicators)
+
+add_executable(block_progress_bar_iterable block_progress_bar_iterable.cpp)
+target_link_libraries(block_progress_bar_iterable PRIVATE indicators::indicators)
 
 add_executable(multi_threaded_bar multi_threaded_bar.cpp)
-target_link_libraries(multi_threaded_bar PRIVATE indica::indica)
+target_link_libraries(multi_threaded_bar PRIVATE indicators::indicators)
 
 add_executable(progress_bar_set_progress progress_bar_set_progress.cpp)
-target_link_libraries(progress_bar_set_progress PRIVATE indica::indica)
+target_link_libraries(progress_bar_set_progress PRIVATE indicators::indicators)
 
 add_executable(progress_bar_tick progress_bar_tick.cpp)
-target_link_libraries(progress_bar_tick PRIVATE indica::indica)
+target_link_libraries(progress_bar_tick PRIVATE indicators::indicators)
+
+add_executable(progress_bar_countdown progress_bar_countdown.cpp)
+target_link_libraries(progress_bar_countdown PRIVATE indicators::indicators)
+
+add_executable(progress_bar_sstream progress_bar_sstream.cpp)
+target_link_libraries(progress_bar_sstream PRIVATE indicators::indicators)
+
+add_executable(progress_bar_unicode progress_bar_unicode.cpp)
+target_link_libraries(progress_bar_unicode PRIVATE indicators::indicators)
 
 add_executable(progress_spinner progress_spinner.cpp)
-target_link_libraries(progress_spinner PRIVATE indica::indica)
+target_link_libraries(progress_spinner PRIVATE indicators::indicators)
 
 add_executable(time_meter time_meter.cpp)
-target_link_libraries(time_meter PRIVATE indica::indica)
+target_link_libraries(time_meter PRIVATE indicators::indicators)
+
+add_executable(multi_progress_bar multi_progress_bar.cpp)
+target_link_libraries(multi_progress_bar PRIVATE indicators::indicators)
+
+add_executable(multi_block_progress_bar multi_block_progress_bar.cpp)
+target_link_libraries(multi_block_progress_bar PRIVATE indicators::indicators)
+
+add_executable(dynamic_progress dynamic_progress.cpp)
+target_link_libraries(dynamic_progress PRIVATE indicators::indicators)
+
+add_executable(max_progress max_progress.cpp)
+target_link_libraries(max_progress PRIVATE indicators::indicators)
+
+add_executable(indeterminate_progress_bar indeterminate_progress_bar.cpp)
+target_link_libraries(indeterminate_progress_bar PRIVATE indicators::indicators)
+
+add_executable(dynamic_postfix_text dynamic_postfix_text.cpp)
+target_link_libraries(dynamic_postfix_text PRIVATE indicators::indicators)
+

samples/block_progress_bar.cpp

@@ -1,32 +1,30 @@
 #include <chrono>
 #include <indicators/block_progress_bar.hpp>
+#include <indicators/cursor_control.hpp>
 #include <thread>
 
 int main() {
 
   // Hide cursor
-  std::cout << "\e[?25l";
+  indicators::show_console_cursor(false);
 
-  indicators::BlockProgressBar bar;
-
-  // Configure the bar
-  bar.set_bar_width(80);
-  bar.start_bar_with("[");
-  bar.end_bar_with("]");
-  bar.set_foreground_color(indicators::Color::WHITE);
+  indicators::BlockProgressBar bar{
+      indicators::option::BarWidth{80},
+      indicators::option::FontStyles{
+          std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
 
   // Update bar state
-  auto progress = 0.0f;
+  size_t progress = 0;
   while (true) {
     bar.set_progress(progress);
-    progress += 0.25f;
+    progress++;
     if (bar.is_completed())
       break;
     std::this_thread::sleep_for(std::chrono::milliseconds(50));
   }
 
   // Show cursor
-  std::cout << "\e[?25h";
+  indicators::show_console_cursor(true);
 
   return 0;
 }

samples/block_progress_bar_iterable.cpp

@@ -0,0 +1,43 @@
+#include <chrono>
+#include <indicators/block_progress_bar.hpp>
+#include <indicators/cursor_control.hpp>
+#include <thread>
+
+int main() {
+
+  // Hide cursor
+  indicators::show_console_cursor(false);
+
+  // Random list of numbers
+  std::vector<size_t> numbers;
+  for (size_t i = 0; i < 1259438; ++i) {
+    numbers.push_back(i);
+  }
+
+  using namespace indicators;
+  BlockProgressBar bar{option::BarWidth{80}, option::ForegroundColor{Color::white},
+                       option::FontStyles{std::vector<FontStyle>{FontStyle::bold}},
+                       option::MaxProgress{numbers.size()}};
+
+  std::cout << "Iterating over a list of numbers (size = " << numbers.size() << ")\n";
+
+  std::vector<size_t> result;
+  for (size_t i = 0; i < numbers.size(); ++i) {
+
+    // Perform some computation
+    result.push_back(numbers[i] * numbers[i]);
+
+    // Show iteration as postfix text
+    bar.set_option(option::PostfixText{std::to_string(i) + "/" + std::to_string(numbers.size())});
+
+    // update progress bar
+    bar.tick();
+  }
+
+  bar.mark_as_completed();
+
+  // Show cursor
+  indicators::show_console_cursor(true);
+
+  return 0;
+}

samples/dynamic_postfix_text.cpp

@@ -0,0 +1,46 @@
+#include <indicators/progress_bar.hpp>
+#include <indicators/multi_progress.hpp>
+#include <indicators/terminal_size.hpp>
+using namespace indicators;
+
+int main() {
+
+    std::cout << "Terminal width: " << terminal_size().second << "\n";
+
+    // prepare progress bar
+    auto prepare_p = [](ProgressBar *p, const std::string &prefix){
+        p->set_option(option::PrefixText{prefix});
+        p->set_option(option::Start{""});
+        p->set_option(option::Fill{""});
+        p->set_option(option::Lead{""});
+        p->set_option(option::Remainder{""});
+        p->set_option(option::End{""});
+        p->set_option(option::BarWidth{0});
+    };
+
+    ProgressBar p1, p2;
+
+    prepare_p(&p1, "Progress #1");
+    prepare_p(&p2, "Progress #2");
+
+    MultiProgress<ProgressBar, 2> mp(p1, p2);
+
+    std::string some_text[] = {"foo", "bar", "independence", "beta", "alfa"};
+    std::string dynamic_text;
+
+    // first pb with static postfix text
+    p1.set_option(option::PostfixText{"Static text"});
+
+    // second pb with dynamic postfix text
+    for (auto &t: some_text) {
+        dynamic_text += t + " ";
+        p2.set_option(option::PostfixText{dynamic_text});
+        mp.set_progress<0>(size_t(0));
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+    }
+
+    // update postfix to little text for pb #2
+    p2.set_option(option::PostfixText{"abcd"});
+    mp.set_progress<0>(size_t(0));
+
+}

samples/dynamic_progress.cpp

@@ -0,0 +1,158 @@
+#include <indicators/dynamic_progress.hpp>
+#include <indicators/progress_bar.hpp>
+using namespace indicators;
+
+int main() {
+
+  auto bar1 = std::make_unique<ProgressBar>(option::BarWidth{50},
+                   option::ForegroundColor{Color::red},
+                   option::ShowElapsedTime{true},
+                   option::ShowRemainingTime{true},
+                   option::PrefixText{"5c90d4a2d1a8: Downloading "},
+                   indicators::option::FontStyles{
+                       std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
+
+  auto bar2 = std::make_unique<ProgressBar>(option::BarWidth{50},
+                   option::ForegroundColor{Color::yellow},
+                   option::ShowElapsedTime{true},
+                   option::ShowRemainingTime{true},
+                   option::PrefixText{"22337bfd13a9: Downloading "},
+                   indicators::option::FontStyles{
+                       std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
+
+  auto bar3 = std::make_unique<ProgressBar>(option::BarWidth{50},
+                   option::ForegroundColor{Color::green},
+                   option::ShowElapsedTime{true},
+                   option::ShowRemainingTime{true},
+                   option::PrefixText{"10f26c680a34: Downloading "},
+                   indicators::option::FontStyles{
+                       std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
+
+  auto bar4 = std::make_unique<ProgressBar>(option::BarWidth{50},
+                   option::ForegroundColor{Color::white},
+                   option::ShowElapsedTime{true},
+                   option::ShowRemainingTime{true},
+                   option::PrefixText{"6364e0d7a283: Downloading "},
+                   indicators::option::FontStyles{
+                       std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
+
+  auto bar5 = std::make_unique<ProgressBar>(option::BarWidth{50},
+                   option::ForegroundColor{Color::blue},
+                   option::ShowElapsedTime{true},
+                   option::ShowRemainingTime{true},
+                   option::PrefixText{"ff1356ba118b: Downloading "},
+                   indicators::option::FontStyles{
+                       std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
+
+  auto bar6 = std::make_unique<ProgressBar>(option::BarWidth{50},
+                   option::ForegroundColor{Color::cyan},
+                   option::ShowElapsedTime{true},
+                   option::ShowRemainingTime{true},
+                   option::PrefixText{"5a17453338b4: Downloading "},
+                   indicators::option::FontStyles{
+                       std::vector<indicators::FontStyle>{indicators::FontStyle::bold}});
+
+  std::cout << termcolor::bold << termcolor::white << "Pulling image foo:bar/baz\n";
+
+  // Construct with 3 progress bars. We'll add 3 more at a later point
+  DynamicProgress<ProgressBar> bars(bar1, bar2, bar3);
+
+  // Do not hide bars when completed
+  bars.set_option(option::HideBarWhenComplete{false});
+
+  std::thread fourth_job, fifth_job, sixth_job;
+
+  auto job4 = [&bars](size_t i) {
+    while (true) {
+      bars[i].tick();
+      if (bars[i].is_completed()) {
+        bars[i].set_option(option::PrefixText{"6364e0d7a283: Pull complete "});
+        bars[i].mark_as_completed();
+        break;
+      }
+      std::this_thread::sleep_for(std::chrono::milliseconds(50));
+    }
+  };
+
+  auto job5 = [&bars](size_t i) {
+    while (true) {
+      bars[i].tick();
+      if (bars[i].is_completed()) {
+        bars[i].set_option(option::PrefixText{"ff1356ba118b: Pull complete "});
+        bars[i].mark_as_completed();
+        break;
+      }
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    }
+  };
+
+  auto job6 = [&bars](size_t i) {
+    while (true) {
+      bars[i].tick();
+      if (bars[i].is_completed()) {
+        bars[i].set_option(option::PrefixText{"5a17453338b4: Pull complete "});
+        bars[i].mark_as_completed();
+        break;
+      }
+      std::this_thread::sleep_for(std::chrono::milliseconds(40));
+    }
+  };
+
+  auto job1 = [&bars, &bar6, &sixth_job, &job6]() {
+    while (true) {
+      bars[0].tick();
+      if (bars[0].is_completed()) {
+        bars[0].set_option(option::PrefixText{"5c90d4a2d1a8: Pull complete "});
+        // bar1 is completed, adding bar6
+        auto i = bars.push_back(std::move(bar6));
+        sixth_job = std::thread(job6, i);
+        sixth_job.join();
+        break;
+      }
+      std::this_thread::sleep_for(std::chrono::milliseconds(140));
+    }
+  };
+
+  auto job2 = [&bars, &bar5, &fifth_job, &job5]() {
+    while (true) {
+      bars[1].tick();
+      if (bars[1].is_completed()) {
+        bars[1].set_option(option::PrefixText{"22337bfd13a9: Pull complete "});
+        // bar2 is completed, adding bar5
+        auto i = bars.push_back(std::move(bar5));
+        fifth_job = std::thread(job5, i);
+        fifth_job.join();
+        break;
+      }
+      std::this_thread::sleep_for(std::chrono::milliseconds(25));
+    }
+  };
+
+  auto job3 = [&bars, &bar4, &fourth_job, &job4]() {
+    while (true) {
+      bars[2].tick();
+      if (bars[2].is_completed()) {
+        bars[2].set_option(option::PrefixText{"10f26c680a34: Pull complete "});
+        // bar3 is completed, adding bar4
+        auto i = bars.push_back(std::move(bar4));
+        fourth_job = std::thread(job4, i);
+        fourth_job.join();
+        break;
+      }
+      std::this_thread::sleep_for(std::chrono::milliseconds(50));
+    }
+  };
+
+  std::thread first_job(job1);
+  std::thread second_job(job2);
+  std::thread third_job(job3);
+
+  third_job.join();
+  second_job.join();
+  first_job.join();
+
+  std::cout << termcolor::bold << termcolor::green << "✔ Downloaded image foo/bar:baz" << std::endl;
+  std::cout << termcolor::reset;
+
+  return 0;
+}

samples/indeterminate_progress_bar.cpp

@@ -0,0 +1,38 @@
+#include <chrono>
+#include <indicators/cursor_control.hpp>
+#include <indicators/indeterminate_progress_bar.hpp>
+#include <thread>
+
+int main() {
+  indicators::IndeterminateProgressBar bar{
+      indicators::option::BarWidth{40},
+      indicators::option::Start{"["},
+      indicators::option::Fill{"·"},
+      indicators::option::Lead{"<==>"},
+      indicators::option::End{"]"},
+      indicators::option::PostfixText{"Checking for Updates"},
+      indicators::option::ForegroundColor{indicators::Color::yellow},
+      indicators::option::FontStyles{
+          std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
+
+  indicators::show_console_cursor(false);
+
+  auto job = [&bar]() {
+    std::this_thread::sleep_for(std::chrono::milliseconds(10000));
+    bar.mark_as_completed();
+    std::cout << termcolor::bold << termcolor::green << "System is up to date!\n"
+              << termcolor::reset;
+  };
+  std::thread job_completion_thread(job);
+
+  // Update bar state
+  while (!bar.is_completed()) {
+    bar.tick();
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  }
+
+  job_completion_thread.join();
+
+  indicators::show_console_cursor(true);
+  return 0;
+}

samples/max_progress.cpp

@@ -0,0 +1,29 @@
+#include <chrono>
+#include <indicators/block_progress_bar.hpp>
+#include <indicators/cursor_control.hpp>
+#include <thread>
+
+int main() {
+
+  // Hide cursor
+  indicators::show_console_cursor(false);
+
+  indicators::BlockProgressBar bar{
+      indicators::option::BarWidth{80},
+      indicators::option::FontStyles{
+          std::vector<indicators::FontStyle>{indicators::FontStyle::bold}},
+      indicators::option::MaxProgress{400}};
+
+  // Update bar state
+  while (true) {
+    bar.tick();
+    if (bar.is_completed())
+      break;
+    std::this_thread::sleep_for(std::chrono::milliseconds(50));
+  }
+
+  // Show cursor
+  indicators::show_console_cursor(true);
+
+  return 0;
+}

samples/multi_block_progress_bar.cpp

@@ -0,0 +1,70 @@
+#include <indicators/block_progress_bar.hpp>
+#include <indicators/multi_progress.hpp>
+
+int main() {
+  using namespace indicators;
+  BlockProgressBar bar1{option::BarWidth{50},
+                        option::ForegroundColor{Color::yellow},
+                        option::ShowElapsedTime{true},
+                        option::ShowRemainingTime{true},
+                        option::PrefixText{"Progress Bar #1 "},
+                        indicators::option::FontStyles{
+                            std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
+
+  BlockProgressBar bar2{option::BarWidth{50},
+                        option::ForegroundColor{Color::cyan},
+                        option::ShowElapsedTime{true},
+                        option::ShowRemainingTime{true},
+                        option::PrefixText{"Progress Bar #2 "},
+                        indicators::option::FontStyles{
+                            std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
+
+  BlockProgressBar bar3{option::BarWidth{50},
+                        option::ForegroundColor{Color::red},
+                        option::ShowElapsedTime{true},
+                        option::ShowRemainingTime{true},
+                        option::PrefixText{"Progress Bar #3 "},
+                        indicators::option::FontStyles{
+                            std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
+
+  indicators::MultiProgress<indicators::BlockProgressBar, 3> bars(bar1, bar2, bar3);
+
+  std::cout << "Multiple Progress Bars:\n";
+
+  auto job1 = [&bars]() {
+    while (true) {
+      bars.tick<0>();
+      if (bars.is_completed<0>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    }
+  };
+
+  auto job2 = [&bars]() {
+    while (true) {
+      bars.tick<1>();
+      if (bars.is_completed<1>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(200));
+    }
+  };
+
+  auto job3 = [&bars]() {
+    while (true) {
+      bars.tick<2>();
+      if (bars.is_completed<2>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(60));
+    }
+  };
+
+  std::thread first_job(job1);
+  std::thread second_job(job2);
+  std::thread third_job(job3);
+
+  first_job.join();
+  second_job.join();
+  third_job.join();
+
+  return 0;
+}

samples/multi_progress_bar.cpp

@@ -0,0 +1,85 @@
+#include <indicators/multi_progress.hpp>
+#include <indicators/progress_bar.hpp>
+
+int main() {
+
+  indicators::ProgressBar bar1{indicators::option::BarWidth{50},
+                               indicators::option::Start{"["},
+                               indicators::option::Fill{"■"},
+                               indicators::option::Lead{"■"},
+                               indicators::option::Remainder{" "},
+                               indicators::option::End{" ]"},
+                               indicators::option::ForegroundColor{indicators::Color::yellow},
+                               indicators::option::ShowElapsedTime{true},
+                               indicators::option::ShowRemainingTime{true},
+                               indicators::option::PrefixText{"Progress Bar #1 "},
+                               indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                   indicators::FontStyle::bold}}};
+
+  indicators::ProgressBar bar2{indicators::option::BarWidth{50},
+                               indicators::option::Start{"["},
+                               indicators::option::Fill{"="},
+                               indicators::option::Lead{">"},
+                               indicators::option::Remainder{" "},
+                               indicators::option::End{" ]"},
+                               indicators::option::ForegroundColor{indicators::Color::cyan},
+                               indicators::option::ShowElapsedTime{true},
+                               indicators::option::ShowRemainingTime{true},
+                               indicators::option::PrefixText{"Progress Bar #2 "},
+                               indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                   indicators::FontStyle::bold}}};
+
+  indicators::ProgressBar bar3{indicators::option::BarWidth{50},
+                               indicators::option::Start{"["},
+                               indicators::option::Fill{"#"},
+                               indicators::option::Lead{"#"},
+                               indicators::option::Remainder{" "},
+                               indicators::option::End{" ]"},
+                               indicators::option::ForegroundColor{indicators::Color::red},
+                               indicators::option::ShowElapsedTime{true},
+                               indicators::option::ShowRemainingTime{true},
+                               indicators::option::PrefixText{"Progress Bar #3 "},
+                               indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                   indicators::FontStyle::bold}}};
+
+  indicators::MultiProgress<indicators::ProgressBar, 3> bars(bar1, bar2, bar3);
+
+  std::cout << "Multiple Progress Bars:\n";
+
+  auto job1 = [&bars]() {
+    while (true) {
+      bars.tick<0>();
+      if (bars.is_completed<0>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    }
+  };
+
+  auto job2 = [&bars]() {
+    while (true) {
+      bars.tick<1>();
+      if (bars.is_completed<1>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(200));
+    }
+  };
+
+  auto job3 = [&bars]() {
+    while (true) {
+      bars.tick<2>();
+      if (bars.is_completed<2>())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(60));
+    }
+  };
+
+  std::thread first_job(job1);
+  std::thread second_job(job2);
+  std::thread third_job(job3);
+
+  first_job.join();
+  second_job.join();
+  third_job.join();
+
+  return 0;
+}

samples/multi_threaded_bar.cpp

@@ -3,14 +3,15 @@
 
 int main() {
 
-  indicators::ProgressBar bar;
-  bar.set_bar_width(50);
-  bar.start_bar_with("[");
-  bar.fill_bar_progress_with("■");
-  bar.lead_bar_progress_with("■");
-  bar.fill_bar_remainder_with("-");
-  bar.end_bar_with("]");
-  bar.set_foreground_color(indicators::Color::YELLOW);
+  indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                              indicators::option::Start{"["},
+                              indicators::option::Fill{"■"},
+                              indicators::option::Lead{"■"},
+                              indicators::option::Remainder{"-"},
+                              indicators::option::End{" ]"},
+                              indicators::option::ForegroundColor{indicators::Color::yellow},
+                              indicators::option::FontStyles{
+                                  std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
 
   // As configured, the bar will look like this:
   //
@@ -39,7 +40,7 @@ int main() {
       if (bar.is_completed()) {
         break;
       }
-      bar.set_postfix_text(status_text[index % status_text.size()]);
+      bar.set_option(indicators::option::PostfixText{status_text[index % status_text.size()]});
       bar.tick();
       index += 1;
       std::this_thread::sleep_for(std::chrono::milliseconds(200));

samples/progress_bar_countdown.cpp

@@ -0,0 +1,31 @@
+#include <chrono>
+#include <indicators/progress_bar.hpp>
+#include <thread>
+using namespace indicators;
+
+int main() {
+
+  ProgressBar bar{option::BarWidth{50},
+                  option::ProgressType{ProgressType::decremental},
+                  option::Start{"["},
+                  option::Fill{"■"},
+                  option::Lead{"■"},
+                  option::Remainder{"-"},
+                  option::End{"]"},
+                  option::PostfixText{"Reverting System Restore"},
+                  option::ForegroundColor{Color::yellow},
+                  option::FontStyles{std::vector<FontStyle>{FontStyle::bold}}};
+
+  // Update bar state
+  while (true) {
+    bar.tick();
+    if (bar.is_completed())
+      break;
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  }
+
+  std::cout << termcolor::bold << termcolor::white << "Task Failed Successfully\n"
+            << termcolor::reset;
+
+  return 0;
+}

samples/progress_bar_set_progress.cpp

@@ -1,38 +1,50 @@
 #include <chrono>
+#include <indicators/cursor_control.hpp>
 #include <indicators/progress_bar.hpp>
 #include <thread>
 
 int main() {
-  indicators::ProgressBar bar;
 
-  // Configure the bar
-  bar.set_bar_width(50);
-  bar.start_bar_with("[");
-  bar.fill_bar_progress_with("=");
-  bar.lead_bar_progress_with(">");
-  bar.fill_bar_remainder_with(" ");
-  bar.end_bar_with("]");
-  bar.set_postfix_text("Getting started");
-  bar.set_foreground_color(indicators::Color::GREEN);
+  // Hide cursor
+  indicators::show_console_cursor(false);
+
+  indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                              indicators::option::Start{"["},
+                              indicators::option::Fill{"■"},
+                              indicators::option::Lead{"■"},
+                              indicators::option::Remainder{"-"},
+                              indicators::option::End{" ]"},
+                              indicators::option::PostfixText{"Loading dependency 1/4"},
+                              indicators::option::ForegroundColor{indicators::Color::cyan},
+                              indicators::option::FontStyles{
+                                  std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
 
   // Update bar state
-
   bar.set_progress(10); // 10% done
 
   // do some work
-  std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  std::this_thread::sleep_for(std::chrono::milliseconds(800));
+
+  bar.set_option(indicators::option::PostfixText{"Loading dependency 2/4"});
 
   bar.set_progress(30); // 30% done
 
   // do some more work
-  std::this_thread::sleep_for(std::chrono::milliseconds(600));
+  std::this_thread::sleep_for(std::chrono::milliseconds(700));
+
+  bar.set_option(indicators::option::PostfixText{"Loading dependency 3/4"});
 
   bar.set_progress(65); // 65% done
 
   // do final bit of work
-  std::this_thread::sleep_for(std::chrono::milliseconds(300));
+  std::this_thread::sleep_for(std::chrono::milliseconds(900));
+
+  bar.set_option(indicators::option::PostfixText{"Loaded dependencies!"});
 
   bar.set_progress(100); // all done
 
+  // Show cursor
+  indicators::show_console_cursor(true);
+
   return 0;
 }

samples/progress_bar_sstream.cpp

@@ -0,0 +1,35 @@
+#include <chrono>
+#include <indicators/progress_bar.hpp>
+#include <sstream>
+#include <thread>
+
+int main() {
+  using namespace indicators;
+
+  std::stringstream os;
+
+  ProgressBar bar{
+      option::BarWidth{50},
+      option::Start{"["},
+      option::Fill{"="},
+      option::Lead{">"},
+      option::Remainder{" "},
+      option::End{"]"},
+      option::PostfixText{"Getting started"},
+      option::ForegroundColor{indicators::Color::green},
+      option::FontStyles{std::vector<indicators::FontStyle>{indicators::FontStyle::bold}},
+      option::Stream{os}};
+
+  // Update bar state
+  while (true) {
+    bar.tick();
+    if (bar.is_completed())
+      break;
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  }
+
+  std::cout << "Stream contents:\n";
+  std::cout << os.str() << "\n";
+
+  return 0;
+}

samples/progress_bar_tick.cpp

@@ -3,17 +3,16 @@
 #include <thread>
 
 int main() {
-  indicators::ProgressBar bar;
-
-  // Configure the bar
-  bar.set_bar_width(50);
-  bar.start_bar_with("[");
-  bar.fill_bar_progress_with("=");
-  bar.lead_bar_progress_with(">");
-  bar.fill_bar_remainder_with(" ");
-  bar.end_bar_with("]");
-  bar.set_postfix_text("Getting started");
-  bar.set_foreground_color(indicators::Color::GREEN);
+  indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                              indicators::option::Start{"["},
+                              indicators::option::Fill{"="},
+                              indicators::option::Lead{">"},
+                              indicators::option::Remainder{" "},
+                              indicators::option::End{" ]"},
+                              indicators::option::PostfixText{"Getting started"},
+                              indicators::option::ForegroundColor{indicators::Color::green},
+                              indicators::option::FontStyles{
+                                  std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
 
   // Update bar state
   while (true) {

samples/progress_bar_unicode.cpp

@@ -0,0 +1,171 @@
+#include <chrono>
+#include <indicators/cursor_control.hpp>
+#include <indicators/indeterminate_progress_bar.hpp>
+#include <indicators/progress_bar.hpp>
+#include <thread>
+
+int main() {
+
+  indicators::show_console_cursor(false);
+
+  {
+    // Plain old ASCII
+    indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                                indicators::option::Start{"["},
+                                indicators::option::Fill{"="},
+                                indicators::option::Lead{">"},
+                                indicators::option::Remainder{" "},
+                                indicators::option::End{" ]"},
+                                indicators::option::PostfixText{"Plain-old ASCII"},
+                                indicators::option::ForegroundColor{indicators::Color::green},
+                                indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                    indicators::FontStyle::bold}}};
+
+    // Update bar state
+    while (true) {
+      bar.tick();
+      if (bar.is_completed())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+  }
+
+  {
+    // Unicode
+    indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                                indicators::option::Start{"["},
+                                indicators::option::Fill{"驚くばかり"},
+                                indicators::option::Lead{">"},
+                                indicators::option::Remainder{" "},
+                                indicators::option::End{" ]"},
+                                indicators::option::PostfixText{"Japanese"},
+                                indicators::option::ForegroundColor{indicators::Color::yellow},
+                                indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                    indicators::FontStyle::bold}}};
+
+    // Update bar state
+    while (true) {
+      bar.tick();
+      if (bar.is_completed())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+  }
+
+  {
+    // Russian
+    indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                                indicators::option::Start{"["},
+                                indicators::option::Fill{"Потрясающие"},
+                                indicators::option::Remainder{" "},
+                                indicators::option::End{" ]"},
+                                indicators::option::PostfixText{"Russian"},
+                                indicators::option::ForegroundColor{indicators::Color::red},
+                                indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                    indicators::FontStyle::bold}}};
+
+    // Update bar state
+    while (true) {
+      bar.tick();
+      if (bar.is_completed())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+  }
+
+  {
+    // Greek
+    indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                                indicators::option::Start{"["},
+                                indicators::option::Fill{"Φοβερός"},
+                                indicators::option::Remainder{" "},
+                                indicators::option::End{" ]"},
+                                indicators::option::PostfixText{"Greek"},
+                                indicators::option::ForegroundColor{indicators::Color::cyan},
+                                indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                    indicators::FontStyle::bold}}};
+
+    // Update bar state
+    while (true) {
+      bar.tick();
+      if (bar.is_completed())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+  }
+
+  {
+    // Chinese
+    indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                                indicators::option::Start{"["},
+                                indicators::option::Fill{"太棒了"},
+                                indicators::option::Remainder{" "},
+                                indicators::option::End{" ]"},
+                                indicators::option::PostfixText{"Chinese"},
+                                indicators::option::ForegroundColor{indicators::Color::green},
+                                indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                    indicators::FontStyle::bold}}};
+
+    // Update bar state
+    while (true) {
+      bar.tick();
+      if (bar.is_completed())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+  }
+
+  {
+    // Emojis
+    indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                                indicators::option::Start{"["},
+                                indicators::option::Fill{"🔥"},
+                                indicators::option::Lead{"🔥"},
+                                indicators::option::Remainder{" "},
+                                indicators::option::End{" ]"},
+                                indicators::option::PostfixText{"Emojis"},
+                                indicators::option::ForegroundColor{indicators::Color::white},
+                                indicators::option::FontStyles{std::vector<indicators::FontStyle>{
+                                    indicators::FontStyle::bold}}};
+
+    // Update bar state
+    while (true) {
+      bar.tick();
+      if (bar.is_completed())
+        break;
+      std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    }
+  }
+
+  {
+    // Indeterminate progress bar
+    indicators::IndeterminateProgressBar bar{
+        indicators::option::BarWidth{50},
+        indicators::option::Start{"["},
+        indicators::option::Fill{"✯"},
+        indicators::option::Lead{"載入中"},
+        indicators::option::End{" ]"},
+        indicators::option::PostfixText{"Loading Progress Bar"},
+        indicators::option::ForegroundColor{indicators::Color::yellow},
+        indicators::option::FontStyles{
+            std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
+
+    auto job = [&bar]() {
+      std::this_thread::sleep_for(std::chrono::milliseconds(10000));
+      bar.mark_as_completed();
+    };
+    std::thread job_completion_thread(job);
+
+    // Update bar state
+    while (!bar.is_completed()) {
+      bar.tick();
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
+    }
+
+    job_completion_thread.join();
+  }
+
+  indicators::show_console_cursor(true);
+
+  return 0;
+}

samples/progress_spinner.cpp

@@ -1,26 +1,28 @@
+#include <indicators/cursor_control.hpp>
 #include <indicators/progress_spinner.hpp>
 
 int main() {
 
   // Hide cursor
-  std::cout << "\e[?25l";
+  indicators::show_console_cursor(false);
 
-  indicators::ProgressSpinner spinner;
-
-  // Configure the spinner
-  spinner.set_postfix_text("Checking credentials");
-  spinner.set_foreground_color(indicators::Color::YELLOW);
-  spinner.set_spinner_states({"⠈", "⠐", "⠠", "⢀", "⡀", "⠄", "⠂", "⠁"});
+  indicators::ProgressSpinner spinner{
+      indicators::option::PostfixText{"Checking credentials"},
+      indicators::option::ForegroundColor{indicators::Color::yellow},
+      indicators::option::SpinnerStates{
+          std::vector<std::string>{"⠈", "⠐", "⠠", "⢀", "⡀", "⠄", "⠂", "⠁"}},
+      indicators::option::FontStyles{
+          std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
 
   // Update spinner state
   auto job = [&spinner]() {
     while (true) {
       if (spinner.is_completed()) {
-        spinner.set_foreground_color(indicators::Color::GREEN);
-        spinner.set_prefix_text("✔");
-        spinner.hide_spinner();
-        spinner.hide_percentage();
-        spinner.set_postfix_text("Authenticated!");
+        spinner.set_option(indicators::option::ForegroundColor{indicators::Color::green});
+        spinner.set_option(indicators::option::PrefixText{"✔"});
+        spinner.set_option(indicators::option::ShowSpinner{false});
+        spinner.set_option(indicators::option::ShowPercentage{false});
+        spinner.set_option(indicators::option::PostfixText{"Authenticated!"});
         spinner.mark_as_completed();
         break;
       } else
@@ -32,7 +34,7 @@ int main() {
   thread.join();
 
   // Show cursor
-  std::cout << "\e[?25h";
+  indicators::show_console_cursor(true);
 
   return 0;
 }

samples/time_meter.cpp

@@ -1,23 +1,24 @@
 #include <chrono>
+#include <indicators/cursor_control.hpp>
 #include <indicators/progress_bar.hpp>
 #include <thread>
 
 int main() {
-  indicators::ProgressBar bar;
+  // Hide cursor
+  indicators::show_console_cursor(false);
 
-  // Configure the bar
-  bar.set_bar_width(50);
-  bar.start_bar_with(" [");
-  bar.fill_bar_progress_with("█");
-  bar.lead_bar_progress_with("█");
-  bar.fill_bar_remainder_with("-");
-  bar.end_bar_with("]");
-  bar.set_prefix_text("Training Gaze Network 👀");
-  bar.set_foreground_color(indicators::Color::YELLOW);
-
-  // Show time elapsed and remaining
-  bar.show_elapsed_time();
-  bar.show_remaining_time();
+  indicators::ProgressBar bar{indicators::option::BarWidth{50},
+                              indicators::option::Start{" ["},
+                              indicators::option::Fill{"█"},
+                              indicators::option::Lead{"█"},
+                              indicators::option::Remainder{"-"},
+                              indicators::option::End{"]"},
+                              indicators::option::PrefixText{"Training Gaze Network 👀"},
+                              indicators::option::ForegroundColor{indicators::Color::yellow},
+                              indicators::option::ShowElapsedTime{true},
+                              indicators::option::ShowRemainingTime{true},
+                              indicators::option::FontStyles{
+                                  std::vector<indicators::FontStyle>{indicators::FontStyle::bold}}};
 
   // Update bar state
   while (true) {
@@ -28,7 +29,7 @@ int main() {
   }
 
   // Show cursor
-  std::cout << "\e[?25h";
+  indicators::show_console_cursor(true);
 
   return 0;
 }

single_include.json

@@ -0,0 +1,22 @@
+{
+    "project": "Activity Indicators for Modern C++",
+    "target": "single_include/indicators/indicators.hpp",
+    "sources": [
+        "include/indicators/color.hpp",
+        "include/indicators/font_style.hpp",
+        "include/indicators/progress_type.hpp",
+        "include/indicators/termcolor.hpp",
+        "include/indicators/terminal_size.hpp",
+        "include/indicators/setting.hpp",
+        "include/indicators/cursor_control.hpp",
+        "include/indicators/cursor_movement.hpp",
+        "include/indicators/details/stream_helper.hpp",
+        "include/indicators/progress_bar.hpp",
+        "include/indicators/block_progress_bar.hpp",
+        "include/indicators/indeterminate_progress_bar.hpp",
+        "include/indicators/multi_progress.hpp",
+        "include/indicators/dynamic_progress.hpp",
+        "include/indicators/progress_spinner.hpp"
+    ],
+    "include_paths": ["include"]
+}

utils/amalgamate/CHANGES.md

@@ -0,0 +1,10 @@
+The following changes have been made to the code with respect to <https://github.com/edlund/amalgamate/commit/c91f07eea1133aa184f652b8f1398eaf03586208>:
+
+- Resolved inspection results from PyCharm:
+  - replaced tabs with spaces
+  - added encoding annotation
+  - reindented file to remove trailing whitespaces
+  - unused import `sys`
+  - membership check
+  - made function from `_is_within`
+  - removed unused variable `actual_path`

utils/amalgamate/LICENSE.md

@@ -0,0 +1,27 @@
+amalgamate.py - Amalgamate C source and header files
+Copyright (c) 2012, Erik Edlund <erik.edlund@32767.se>
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+ * Neither the name of Erik Edlund, nor the names of its contributors may
+   be used to endorse or promote products derived from this software without
+   specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

utils/amalgamate/README.md

@@ -0,0 +1,66 @@
+
+# amalgamate.py - Amalgamate C source and header files
+
+Origin: https://bitbucket.org/erikedlund/amalgamate
+
+Mirror: https://github.com/edlund/amalgamate
+
+`amalgamate.py` aims to make it easy to use SQLite-style C source and header
+amalgamation in projects.
+
+For more information, please refer to: http://sqlite.org/amalgamation.html
+
+## Here be dragons
+
+`amalgamate.py` is quite dumb, it only knows the bare minimum about C code
+required in order to be able to handle trivial include directives. It can
+produce weird results for unexpected code.
+
+Things to be aware of:
+
+`amalgamate.py` will not handle complex include directives correctly:
+
+        #define HEADER_PATH "path/to/header.h"
+        #include HEADER_PATH
+
+In the above example, `path/to/header.h` will not be included in the
+amalgamation (HEADER_PATH is never expanded).
+
+`amalgamate.py` makes the assumption that each source and header file which
+is not empty will end in a new-line character, which is not immediately
+preceded by a backslash character (see 5.1.1.2p1.2 of ISO C99).
+
+`amalgamate.py` should be usable with C++ code, but raw string literals from
+C++11 will definitely cause problems:
+
+        R"delimiter(Terrible raw \ data " #include <sneaky.hpp>)delimiter"
+        R"delimiter(Terrible raw \ data " escaping)delimiter"
+
+In the examples above, `amalgamate.py` will stop parsing the raw string literal
+when it encounters the first quotation mark, which will produce unexpected
+results.
+
+## Installing amalgamate.py
+
+Python v.2.7.0 or higher is required.
+
+`amalgamate.py` can be tested and installed using the following commands:
+
+        ./test.sh && sudo -k cp ./amalgamate.py /usr/local/bin/
+
+## Using amalgamate.py
+
+        amalgamate.py [-v] -c path/to/config.json -s path/to/source/dir \
+                [-p path/to/prologue.(c|h)]
+
+ * The `-c, --config` option should specify the path to a JSON config file which
+   lists the source files, include paths and where to write the resulting
+   amalgamation. Have a look at `test/source.c.json` and `test/include.h.json`
+   to see two examples.
+
+ * The `-s, --source` option should specify the path to the source directory.
+   This is useful for supporting separate source and build directories.
+
+ * The `-p, --prologue` option should specify the path to a file which will be
+   added to the beginning of the amalgamation. It is optional.
+

utils/amalgamate/amalgamate.py

@@ -0,0 +1,299 @@
+#!/usr/bin/env python
+# coding=utf-8
+
+# amalgamate.py - Amalgamate C source and header files.
+# Copyright (c) 2012, Erik Edlund <erik.edlund@32767.se>
+# 
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+# 
+#  * Redistributions of source code must retain the above copyright notice,
+#  this list of conditions and the following disclaimer.
+# 
+#  * Redistributions in binary form must reproduce the above copyright notice,
+#  this list of conditions and the following disclaimer in the documentation
+#  and/or other materials provided with the distribution.
+# 
+#  * Neither the name of Erik Edlund, nor the names of its contributors may
+#  be used to endorse or promote products derived from this software without
+#  specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import argparse
+import datetime
+import json
+import os
+import re
+
+
+class Amalgamation(object):
+
+    # Prepends self.source_path to file_path if needed.
+    def actual_path(self, file_path):
+        if not os.path.isabs(file_path):
+            file_path = os.path.join(self.source_path, file_path)
+        return file_path
+
+    # Search included file_path in self.include_paths and
+    # in source_dir if specified.
+    def find_included_file(self, file_path, source_dir):
+        search_dirs = self.include_paths[:]
+        if source_dir:
+            search_dirs.insert(0, source_dir)
+
+        for search_dir in search_dirs:
+            search_path = os.path.join(search_dir, file_path)
+            if os.path.isfile(self.actual_path(search_path)):
+                return search_path
+        return None
+
+    def __init__(self, args):
+        with open(args.config, 'r') as f:
+            config = json.loads(f.read())
+            for key in config:
+                setattr(self, key, config[key])
+
+            self.verbose = args.verbose == "yes"
+            self.prologue = args.prologue
+            self.source_path = args.source_path
+            self.included_files = []
+
+    # Generate the amalgamation and write it to the target file.
+    def generate(self):
+        amalgamation = ""
+
+        if self.prologue:
+            with open(self.prologue, 'r') as f:
+                amalgamation += datetime.datetime.now().strftime(f.read())
+
+        if self.verbose:
+            print("Config:")
+            print(" target        = {0}".format(self.target))
+            print(" working_dir   = {0}".format(os.getcwd()))
+            print(" include_paths = {0}".format(self.include_paths))
+        print("Creating amalgamation:")
+        for file_path in self.sources:
+            # Do not check the include paths while processing the source
+            # list, all given source paths must be correct.
+            # actual_path = self.actual_path(file_path)
+            print(" - processing \"{0}\"".format(file_path))
+            t = TranslationUnit(file_path, self, True)
+            amalgamation += t.content + "\n\n"
+
+        with open(self.target, 'w', encoding="utf8") as f:
+            f.write(amalgamation)
+
+        print("...done!\n")
+        if self.verbose:
+            print("Files processed: {0}".format(self.sources))
+            print("Files included: {0}".format(self.included_files))
+        print("")
+
+
+def _is_within(match, matches):
+    for m in matches:
+        if match.start() > m.start() and \
+                match.end() < m.end():
+            return True
+    return False
+
+
+class TranslationUnit(object):
+    # // C++ comment.
+    cpp_comment_pattern = re.compile(r"//.*?\n")
+
+    # /* C comment. */
+    c_comment_pattern = re.compile(r"/\*.*?\*/", re.S)
+
+    # "complex \"stri\\\ng\" value".
+    string_pattern = re.compile("[^']" r'".*?(?<=[^\\])"', re.S)
+
+    # Handle simple include directives. Support for advanced
+    # directives where macros and defines needs to expanded is
+    # not a concern right now.
+    include_pattern = re.compile(
+        r'#\s*include\s+(<|")(?P<path>.*?)("|>)', re.S)
+
+    # #pragma once
+    pragma_once_pattern = re.compile(r'#\s*pragma\s+once', re.S)
+
+    # Search for pattern in self.content, add the match to
+    # contexts if found and update the index accordingly.
+    def _search_content(self, index, pattern, contexts):
+        match = pattern.search(self.content, index)
+        if match:
+            contexts.append(match)
+            return match.end()
+        return index + 2
+
+    # Return all the skippable contexts, i.e., comments and strings
+    def _find_skippable_contexts(self):
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = []
+
+        # Walk through the content char by char, and try to grab
+        # skippable contexts using regular expressions when found.
+        i = 1
+        content_len = len(self.content)
+        while i < content_len:
+            j = i - 1
+            current = self.content[i]
+            previous = self.content[j]
+
+            if current == '"':
+                # String value.
+                i = self._search_content(j, self.string_pattern,
+                                         skippable_contexts)
+            elif current == '*' and previous == '/':
+                # C style comment.
+                i = self._search_content(j, self.c_comment_pattern,
+                                         skippable_contexts)
+            elif current == '/' and previous == '/':
+                # C++ style comment.
+                i = self._search_content(j, self.cpp_comment_pattern,
+                                         skippable_contexts)
+            else:
+                # Skip to the next char.
+                i += 1
+
+        return skippable_contexts
+
+    # Returns True if the match is within list of other matches
+
+    # Removes pragma once from content
+    def _process_pragma_once(self):
+        content_len = len(self.content)
+        if content_len < len("#include <x>"):
+            return 0
+
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = self._find_skippable_contexts()
+
+        pragmas = []
+        pragma_once_match = self.pragma_once_pattern.search(self.content)
+        while pragma_once_match:
+            if not _is_within(pragma_once_match, skippable_contexts):
+                pragmas.append(pragma_once_match)
+
+            pragma_once_match = self.pragma_once_pattern.search(self.content,
+                                                                pragma_once_match.end())
+
+        # Handle all collected pragma once directives.
+        prev_end = 0
+        tmp_content = ''
+        for pragma_match in pragmas:
+            tmp_content += self.content[prev_end:pragma_match.start()]
+            prev_end = pragma_match.end()
+        tmp_content += self.content[prev_end:]
+        self.content = tmp_content
+
+    # Include all trivial #include directives into self.content.
+    def _process_includes(self):
+        content_len = len(self.content)
+        if content_len < len("#include <x>"):
+            return 0
+
+        # Find contexts in the content in which a found include
+        # directive should not be processed.
+        skippable_contexts = self._find_skippable_contexts()
+
+        # Search for include directives in the content, collect those
+        # which should be included into the content.
+        includes = []
+        include_match = self.include_pattern.search(self.content)
+        while include_match:
+            if not _is_within(include_match, skippable_contexts):
+                include_path = include_match.group("path")
+                search_same_dir = include_match.group(1) == '"'
+                found_included_path = self.amalgamation.find_included_file(
+                    include_path, self.file_dir if search_same_dir else None)
+                if found_included_path:
+                    includes.append((include_match, found_included_path))
+
+            include_match = self.include_pattern.search(self.content,
+                                                        include_match.end())
+
+        # Handle all collected include directives.
+        prev_end = 0
+        tmp_content = ''
+        for include in includes:
+            include_match, found_included_path = include
+            tmp_content += self.content[prev_end:include_match.start()]
+            tmp_content += "// {0}".format(include_match.group(0))
+            if found_included_path not in self.amalgamation.included_files:
+                t = TranslationUnit(found_included_path, self.amalgamation, False)
+                tmp_content += t.content
+            prev_end = include_match.end()
+        tmp_content += self.content[prev_end:]
+        self.content = tmp_content
+
+        return len(includes)
+
+    # Make all content processing
+    def _process(self):
+        if not self.is_root:
+            self._process_pragma_once()
+        self._process_includes()
+
+    def __init__(self, file_path, amalgamation, is_root):
+        self.file_path = file_path
+        self.file_dir = os.path.dirname(file_path)
+        self.amalgamation = amalgamation
+        self.is_root = is_root
+
+        self.amalgamation.included_files.append(self.file_path)
+
+        actual_path = self.amalgamation.actual_path(file_path)
+        if not os.path.isfile(actual_path):
+            raise IOError("File not found: \"{0}\"".format(file_path))
+        with open(actual_path, 'r', encoding="utf8") as f:
+            self.content = f.read()
+            self._process()
+
+
+def main():
+    description = "Amalgamate C source and header files."
+    usage = " ".join([
+        "amalgamate.py",
+        "[-v]",
+        "-c path/to/config.json",
+        "-s path/to/source/dir",
+        "[-p path/to/prologue.(c|h)]"
+    ])
+    argsparser = argparse.ArgumentParser(
+        description=description, usage=usage)
+
+    argsparser.add_argument("-v", "--verbose", dest="verbose",
+                            choices=["yes", "no"], metavar="", help="be verbose")
+
+    argsparser.add_argument("-c", "--config", dest="config",
+                            required=True, metavar="", help="path to a JSON config file")
+
+    argsparser.add_argument("-s", "--source", dest="source_path",
+                            required=True, metavar="", help="source code path")
+
+    argsparser.add_argument("-p", "--prologue", dest="prologue",
+                            required=False, metavar="", help="path to a C prologue file")
+
+    amalgamation = Amalgamation(argsparser.parse_args())
+    amalgamation.generate()
+
+
+if __name__ == "__main__":
+    main()

utils/amalgamate/config.json

@@ -0,0 +1,8 @@
+{
+	"project": "cgame competitive programming for codingame",
+	"target": "AllTrees.cpp",
+	"sources": [
+		"test/gametheory/TreesTest.cpp"
+	],
+	"include_paths": ["include"]
+}