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17e1f47fd4bd6aae414850024c0eb24ecd9b3d52
indicators/include/indicators/progress_bar.hpp
Pranav Srinivas Kumar 17e1f47fd4 Added amalgamate to help generate single header for indicators
2020-05-13 15:39:20 -05:00

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#pragma once
#include <indicators/details/stream_helper.hpp>
#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 <type_traits>
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::MaxProgress, option::Stream>;
public:
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::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;
}
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 set_progress(size_t new_progress) {
{
std::lock_guard<std::mutex> lock(mutex_);
progress_ = new_progress;
}
save_start_time();
print_progress();
}
void tick() {
{
std::lock_guard<std::mutex> lock{mutex_};
progress_ += 1;
}
save_start_time();
print_progress();
}
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 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};
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;
}
}
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 (progress_ >= max_progress) {
get_value<details::ProgressBarOption::completed>() = true;
}
return;
}
auto now = std::chrono::high_resolution_clock::now();
if (!get_value<details::ProgressBarOption::completed>())
elapsed_ = std::chrono::duration_cast<std::chrono::nanoseconds>(now - start_time_point_);
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>();
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>();
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>(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 << "]";
}
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();
if (progress_ >= 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
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