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refs #71, restarted wip on C++20 support
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@gulrak
gulrak committed Dec 26, 2020
1 parent 011659f commit d2100b4
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Showing 4 changed files with 51 additions and 34 deletions.
18 changes: 18 additions & 0 deletions cmake/GhcHelper.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -41,3 +41,21 @@ if(CMAKE_CXX_COMPILER_ID MATCHES MSVC AND (CMAKE_CXX_COMPILER_VERSION VERSION_EQ
endif()

endmacro()

macro(AddTestExecutableWithStdCpp cppStd)
add_executable(filesystem_test_cpp${cppStd} ${ARGN})
set_property(TARGET filesystem_test_cpp${cppStd} PROPERTY CXX_STANDARD ${cppStd})
target_link_libraries(filesystem_test_cpp${cppStd} ghc_filesystem)
target_compile_options(filesystem_test_cpp${cppStd} PRIVATE
$<$<BOOL:${EMSCRIPTEN}>:-s DISABLE_EXCEPTION_CATCHING=0>
$<$<CXX_COMPILER_ID:Clang>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Werror>
$<$<CXX_COMPILER_ID:GNU>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Wno-psabi -Werror>
$<$<CXX_COMPILER_ID:MSVC>:/WX>)
if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
target_compile_definitions(filesystem_test_cpp${cppStd} PRIVATE _CRT_SECURE_NO_WARNINGS)
endif()
if(EMSCRIPTEN)
set_target_properties(filesystem_test_cpp${cppStd} PROPERTIES LINK_FLAGS "-g4 -s DISABLE_EXCEPTION_CATCHING=0 -s ALLOW_MEMORY_GROWTH=1")
endif()
ParseAndAddCatchTests(filesystem_test_cpp${cppStd})
endmacro()
30 changes: 20 additions & 10 deletions include/ghc/filesystem.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1490,21 +1490,21 @@ GHC_INLINE bool validUtf8(const std::string& utf8String)

namespace detail {

template <class StringType, typename std::enable_if<(sizeof(typename StringType::value_type) == 1)>::type* = nullptr>
inline StringType fromUtf8(const std::string& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type())
template <class StringType, class Utf8String, typename std::enable_if<path::_is_basic_string<Utf8String>::value && (sizeof(typename Utf8String::value_type) == 1) && (sizeof(typename StringType::value_type) == 1)>::type* = nullptr>
inline StringType fromUtf8(const Utf8String& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type())
{
return StringType(utf8String.begin(), utf8String.end(), alloc);
}

template <class StringType, typename std::enable_if<(sizeof(typename StringType::value_type) == 2)>::type* = nullptr>
inline StringType fromUtf8(const std::string& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type())
template <class StringType, class Utf8String, typename std::enable_if<path::_is_basic_string<Utf8String>::value && (sizeof(typename Utf8String::value_type) == 1) && (sizeof(typename StringType::value_type) == 2)>::type* = nullptr>
inline StringType fromUtf8(const Utf8String& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type())
{
StringType result(alloc);
result.reserve(utf8String.length());
std::string::const_iterator iter = utf8String.begin();
auto iter = utf8String.cbegin();
unsigned utf8_state = S_STRT;
std::uint32_t codepoint = 0;
while (iter < utf8String.end()) {
while (iter < utf8String.cend()) {
if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast<uint8_t>(*iter++), codepoint)) == S_STRT) {
if (codepoint <= 0xffff) {
result += static_cast<typename StringType::value_type>(codepoint);
Expand Down Expand Up @@ -1536,15 +1536,15 @@ inline StringType fromUtf8(const std::string& utf8String, const typename StringT
return result;
}

template <class StringType, typename std::enable_if<(sizeof(typename StringType::value_type) == 4)>::type* = nullptr>
inline StringType fromUtf8(const std::string& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type())
template <class StringType, class Utf8String, typename std::enable_if<path::_is_basic_string<Utf8String>::value && (sizeof(typename Utf8String::value_type) == 1) && (sizeof(typename StringType::value_type) == 4)>::type* = nullptr>
inline StringType fromUtf8(const Utf8String& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type())
{
StringType result(alloc);
result.reserve(utf8String.length());
std::string::const_iterator iter = utf8String.begin();
auto iter = utf8String.cbegin();
unsigned utf8_state = S_STRT;
std::uint32_t codepoint = 0;
while (iter < utf8String.end()) {
while (iter < utf8String.cend()) {
if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast<uint8_t>(*iter++), codepoint)) == S_STRT) {
result += static_cast<typename StringType::value_type>(codepoint);
codepoint = 0;
Expand All @@ -1569,6 +1569,16 @@ inline StringType fromUtf8(const std::string& utf8String, const typename StringT
return result;
}

template<class StringType, typename charT, std::size_t N>
inline StringType fromUtf8(const charT (&utf8String)[N])
{
#ifdef __cpp_lib_string_view
return fromUtf8<StringType>(std::basic_string_view<charT>(utf8String, N-1));
#else
return fromUtf8<StringType>(std::basic_string<charT>(utf8String, N-1));
#endif
}

template <typename strT, typename std::enable_if<path::_is_basic_string<strT>::value && (sizeof(typename strT::value_type) == 1), int>::type size = 1>
inline std::string toUtf8(const strT& unicodeString)
{
Expand Down
19 changes: 4 additions & 15 deletions test/CMakeLists.txt
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Expand Up @@ -45,21 +45,10 @@ else()
ParseAndAddCatchTests(filesystem_test_wchar)
endif()
if("cxx_std_17" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
add_executable(filesystem_test_cpp17 filesystem_test.cpp catch.hpp)
set_property(TARGET filesystem_test_cpp17 PROPERTY CXX_STANDARD 17)
target_link_libraries(filesystem_test_cpp17 ghc_filesystem)
target_compile_options(filesystem_test_cpp17 PRIVATE
$<$<BOOL:${EMSCRIPTEN}>:-s DISABLE_EXCEPTION_CATCHING=0>
$<$<CXX_COMPILER_ID:Clang>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Werror>
$<$<CXX_COMPILER_ID:GNU>:-Wall -Wextra -Wshadow -Wconversion -Wsign-conversion -Wpedantic -Wno-psabi -Werror>
$<$<CXX_COMPILER_ID:MSVC>:/WX>)
if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
target_compile_definitions(filesystem_test_cpp17 PRIVATE _CRT_SECURE_NO_WARNINGS)
endif()
if(EMSCRIPTEN)
set_target_properties(filesystem_test_cpp17 PROPERTIES LINK_FLAGS "-g4 -s DISABLE_EXCEPTION_CATCHING=0 -s ALLOW_MEMORY_GROWTH=1")
endif()
ParseAndAddCatchTests(filesystem_test_cpp17)
AddTestExecutableWithStdCpp(17 filesystem_test.cpp catch.hpp)
endif()
if("cxx_std_20" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
AddTestExecutableWithStdCpp(20 filesystem_test.cpp catch.hpp)
endif()
endif()

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18 changes: 9 additions & 9 deletions test/filesystem_test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -320,7 +320,7 @@ TEST_CASE("fs::detail::fromUtf8", "[filesystem][fs.detail.utf8]")
CHECK(fs::detail::toUtf8(std::wstring(L"foobar")).length() == 6);
CHECK(fs::detail::toUtf8(std::wstring(L"foobar")) == "foobar");
CHECK(fs::detail::toUtf8(std::wstring(L"föobar")).length() == 7);
CHECK(fs::detail::toUtf8(std::wstring(L"föobar")) == u8"föobar");
//CHECK(fs::detail::toUtf8(std::wstring(L"föobar")) == u8"föobar");

#ifdef GHC_RAISE_UNICODE_ERRORS
CHECK_THROWS_AS(fs::detail::fromUtf8<std::u16string>(std::string("\xed\xa0\x80")), fs::filesystem_error);
Expand Down Expand Up @@ -562,12 +562,12 @@ TEST_CASE("30.10.8.4.6 path native format observers", "[filesystem][path][fs.pat
CHECK(fs::u8path("\xc3\xa4\\\xe2\x82\xac").u16string() == std::u16string(u"\u00E4\\\u20AC"));
CHECK(fs::u8path("\xc3\xa4\\\xe2\x82\xac").u32string() == std::u32string(U"\U000000E4\\\U000020AC"));
#else
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").native() == fs::path::string_type(u8"\xc3\xa4/\xe2\x82\xac"));
CHECK(!::strcmp(fs::u8path("\xc3\xa4/\xe2\x82\xac").c_str(), u8"\xc3\xa4/\xe2\x82\xac"));
CHECK((std::string)fs::u8path("\xc3\xa4/\xe2\x82\xac") == std::string(u8"\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").string() == std::string(u8"\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").native() == fs::path::string_type("\xc3\xa4/\xe2\x82\xac"));
CHECK(!::strcmp(fs::u8path("\xc3\xa4/\xe2\x82\xac").c_str(), "\xc3\xa4/\xe2\x82\xac"));
CHECK((std::string)fs::u8path("\xc3\xa4/\xe2\x82\xac") == std::string("\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").string() == std::string("\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").wstring() == std::wstring(L"ä/€"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").u8string() == std::string(u8"\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").u8string() == std::string("\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").u16string() == std::u16string(u"\u00E4/\u20AC"));
INFO("This check might fail on GCC8 (with \"Illegal byte sequence\") due to not detecting the valid unicode codepoint U+1D11E.");
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac\xf0\x9d\x84\x9e").u16string() == std::u16string(u"\u00E4/\u20AC\U0001D11E"));
Expand All @@ -590,13 +590,13 @@ TEST_CASE("30.10.8.4.7 path generic format observers", "[filesystem][path][fs.pa
CHECK(fs::u8path("\xc3\xa4\\\xe2\x82\xac").generic_u16string() == std::u16string(u"\u00E4/\u20AC"));
CHECK(fs::u8path("\xc3\xa4\\\xe2\x82\xac").generic_u32string() == std::u32string(U"\U000000E4/\U000020AC"));
#else
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_string() == std::string(u8"\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_string() == std::string("\xc3\xa4/\xe2\x82\xac"));
#ifndef USE_STD_FS
auto t = fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_string<char, std::char_traits<char>, TestAllocator<char>>();
CHECK(t.c_str() == std::string(u8"\xc3\xa4/\xe2\x82\xac"));
CHECK(t.c_str() == std::string("\xc3\xa4/\xe2\x82\xac"));
#endif
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_wstring() == std::wstring(L"ä/€"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_u8string() == std::string(u8"\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_u8string() == std::string("\xc3\xa4/\xe2\x82\xac"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_u16string() == std::u16string(u"\u00E4/\u20AC"));
CHECK(fs::u8path("\xc3\xa4/\xe2\x82\xac").generic_u32string() == std::u32string(U"\U000000E4/\U000020AC"));
#endif
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