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feat: Add a parse(FILE *) interface

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The fstream classes are notorious for their non-existent error handling.

This adds a C-style fILE * IO (fopen(), etc.) alternative interface, so
that if a user needs reliable error handling, they can use that, albeit
more inconvenient, but more robust approach.
This commit is contained in:
Lukáš Hrázký
2022-06-30 13:53:32 +02:00
parent 594accf9a7
commit bf9c9d620d
3 changed files with 146 additions and 15 deletions
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74
tests/test_parse_file.cpp
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@@ -142,6 +142,75 @@ BOOST_AUTO_TEST_CASE(test_example_stream)
}
}
BOOST_AUTO_TEST_CASE(test_example_file_pointer)
{
FILE * file = fopen("toml/tests/example.toml", "rb");
const auto data = toml::parse(file, "toml/tests/example.toml");
fclose(file);
BOOST_TEST(toml::find<std::string>(data, "title") == "TOML Example");
const auto& owner = toml::find(data, "owner");
{
BOOST_TEST(toml::find<std::string>(owner, "name") == "Tom Preston-Werner");
BOOST_TEST(toml::find<std::string>(owner, "organization") == "GitHub");
BOOST_TEST(toml::find<std::string>(owner, "bio") ==
"GitHub Cofounder & CEO\nLikes tater tots and beer.");
BOOST_TEST(toml::find<toml::offset_datetime>(owner, "dob") ==
toml::offset_datetime(toml::local_date(1979, toml::month_t::May, 27),
toml::local_time(7, 32, 0), toml::time_offset(0, 0)));
}
const auto& database = toml::find(data, "database");
{
BOOST_TEST(toml::find<std::string>(database, "server") == "192.168.1.1");
const std::vector<int> expected_ports{8001, 8001, 8002};
BOOST_CHECK(toml::find<std::vector<int>>(database, "ports") == expected_ports);
BOOST_TEST(toml::find<int >(database, "connection_max") == 5000);
BOOST_TEST(toml::find<bool>(database, "enabled") == true);
}
const auto& servers = toml::find(data, "servers");
{
toml::table alpha = toml::find<toml::table>(servers, "alpha");
BOOST_TEST(toml::get<std::string>(alpha.at("ip")) == "10.0.0.1");
BOOST_TEST(toml::get<std::string>(alpha.at("dc")) == "eqdc10");
toml::table beta = toml::find<toml::table>(servers, "beta");
BOOST_TEST(toml::get<std::string>(beta.at("ip")) == "10.0.0.2");
BOOST_TEST(toml::get<std::string>(beta.at("dc")) == "eqdc10");
BOOST_TEST(toml::get<std::string>(beta.at("country")) == "\xE4\xB8\xAD\xE5\x9B\xBD");
}
const auto& clients = toml::find(data, "clients");
{
toml::array clients_data = toml::find<toml::array>(clients, "data");
std::vector<std::string> expected_name{"gamma", "delta"};
BOOST_CHECK(toml::get<std::vector<std::string>>(clients_data.at(0)) == expected_name);
std::vector<int> expected_number{1, 2};
BOOST_CHECK(toml::get<std::vector<int>>(clients_data.at(1)) == expected_number);
std::vector<std::string> expected_hosts{"alpha", "omega"};
BOOST_CHECK(toml::find<std::vector<std::string>>(clients, "hosts") == expected_hosts);
}
std::vector<toml::table> products =
toml::find<std::vector<toml::table>>(data, "products");
{
BOOST_TEST(toml::get<std::string>(products.at(0).at("name")) ==
"Hammer");
BOOST_TEST(toml::get<std::int64_t>(products.at(0).at("sku")) ==
738594937);
BOOST_TEST(toml::get<std::string>(products.at(1).at("name")) ==
"Nail");
BOOST_TEST(toml::get<std::int64_t>(products.at(1).at("sku")) ==
284758393);
BOOST_TEST(toml::get<std::string>(products.at(1).at("color")) ==
"gray");
}
}
BOOST_AUTO_TEST_CASE(test_fruit)
{
const auto data = toml::parse("toml/tests/fruit.toml");
@@ -959,3 +1028,8 @@ BOOST_AUTO_TEST_CASE(test_parse_function_compiles)
BOOST_TEST_MESSAGE("path");
#endif
}
BOOST_AUTO_TEST_CASE(test_parse_nonexistent_file)
{
BOOST_CHECK_THROW(toml::parse("nonexistent.toml"), std::runtime_error);
}