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Improve handling of Unicode in paths

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This commit is contained in:
Victor Zverovich
2023-04-30 09:09:35 -07:00
parent 53162142b2
commit 02cae7e48a
2 changed files with 27 additions and 32 deletions
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23
include/fmt/std.h
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@@ -56,12 +56,23 @@ void write_escaped_path(basic_memory_buffer<Char>& quoted,
}
# ifdef _WIN32
template <>
inline void write_escaped_path<char>(basic_memory_buffer<char>& quoted,
inline void write_escaped_path<char>(memory_buffer& quoted,
const std::filesystem::path& p) {
auto s = p.u8string();
write_escaped_string<char>(
std::back_inserter(quoted),
string_view(reinterpret_cast<const char*>(s.c_str()), s.size()));
auto buf = basic_memory_buffer<wchar_t>();
write_escaped_string<wchar_t>(std::back_inserter(buf), p.native());
for (unsigned c : buf) {
// Convert UTF-16 to UTF-8.
if (c < 0x80) {
quoted.push_back(static_cast<unsigned char>(c));
} else if (c < 0x800) {
quoted.push_back(0b1100'0000 | ((c >> 6) & 0b01'1111));
quoted.push_back(0b1000'0000 | (c & 0b11'1111));
} else {
quoted.push_back(0b1110'0000 | ((c >> 12) & 0b01'1111));
quoted.push_back(0b1000'0000 | ((c >> 6) & 0b11'1111));
quoted.push_back(0b1000'0000 | (c & 0b11'1111));
}
}
}
# endif
template <>
@@ -86,7 +97,7 @@ struct formatter<std::filesystem::path, Char>
template <typename FormatContext>
auto format(const std::filesystem::path& p, FormatContext& ctx) const ->
typename FormatContext::iterator {
basic_memory_buffer<Char> quoted;
auto quoted = basic_memory_buffer<Char>();
detail::write_escaped_path(quoted, p);
return formatter<basic_string_view<Char>>::format(
basic_string_view<Char>(quoted.data(), quoted.size()), ctx);