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Add native and generic representation for filesystem::path format spec #3729

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merged 4 commits into from
Nov 29, 2023
Merged

Add native and generic representation for filesystem::path format spec #3729

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9bbb53f
add generic and native of path
js324 Nov 26, 2023
4b4f314
Merge branch 'fmtlib:master' into master
js324 Nov 26, 2023
e5dd88b
add generic and native path format spec
js324 Nov 27, 2023
6a1c643
fix nits
js324 Nov 29, 2023
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15 changes: 13 additions & 2 deletions include/fmt/std.h
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,7 @@ template <typename Char> struct formatter<std::filesystem::path, Char> {
format_specs<Char> specs_;
detail::arg_ref<Char> width_ref_;
bool debug_ = false;
char path_type_ = 'n';

public:
FMT_CONSTEXPR void set_debug_format(bool set = true) { debug_ = set; }
Expand All @@ -130,20 +131,30 @@ template <typename Char> struct formatter<std::filesystem::path, Char> {
debug_ = true;
++it;
}
if (it != end && (*it == 'g' || *it == 'n')) {
path_type_ = *it++;
}
return it;
}

template <typename FormatContext>
auto format(const std::filesystem::path& p, FormatContext& ctx) const {
auto specs = specs_;
auto path_type = path_type_;
# ifdef _WIN32
auto path_string = path_type == 'n' ? p.native() : p.generic_wstring();
# else
auto path_string = path_type == 'n' ? p.native() : p.generic_string();
# endif

detail::handle_dynamic_spec<detail::width_checker>(specs.width, width_ref_,
ctx);
if (!debug_) {
auto s = detail::get_path_string<Char>(p, p.native());
auto s = detail::get_path_string<Char>(p, path_string);
return detail::write(ctx.out(), basic_string_view<Char>(s), specs);
}
auto quoted = basic_memory_buffer<Char>();
detail::write_escaped_path(quoted, p, p.native());
detail::write_escaped_path(quoted, p, path_string);
return detail::write(ctx.out(),
basic_string_view<Char>(quoted.data(), quoted.size()),
specs);
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9 changes: 7 additions & 2 deletions test/std-test.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -25,15 +25,20 @@ TEST(std_test, path) {

EXPECT_EQ(fmt::format("{}", path("foo\"bar")), "foo\"bar");
EXPECT_EQ(fmt::format("{:?}", path("foo\"bar")), "\"foo\\\"bar\"");

EXPECT_EQ(fmt::format("{:n}", path("/usr/bin")), "/usr/bin");
EXPECT_EQ(fmt::format("{:g}", path("/usr/bin")), "/usr/bin");
# ifdef _WIN32
EXPECT_EQ(fmt::format("{:n}", path("C:\\foo")), "C:\\foo");
EXPECT_EQ(fmt::format("{:g}", path("C:\\foo")), "C:/foo");

# ifdef _WIN32
EXPECT_EQ(fmt::format("{}", path(
L"\x0428\x0447\x0443\x0447\x044B\x043D\x0448"
L"\x0447\x044B\x043D\x0430")),
"Шчучыншчына");
EXPECT_EQ(fmt::format("{}", path(L"\xd800")), "�");
EXPECT_EQ(fmt::format("{:?}", path(L"\xd800")), "\"\\ud800\"");
# endif
# endif
}

// Test ambiguity problem described in #2954.
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