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fcbc36cf78
Progress on #9205 Co-Authored-By: John Ericson <John.Ericson@Obsidian.Systems> * Get rid of `PathNG`, just use `std::filesystem::path`
52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
#include <algorithm>
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#include <codecvt>
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#include <iostream>
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#include <locale>
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#include "file-path.hh"
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#include "file-path-impl.hh"
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#include "util.hh"
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namespace nix {
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std::string os_string_to_string(PathViewNG::string_view path)
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{
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std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
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return converter.to_bytes(std::filesystem::path::string_type { path });
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}
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std::filesystem::path::string_type string_to_os_string(std::string_view s)
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{
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std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
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return converter.from_bytes(std::string { s });
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}
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std::optional<std::filesystem::path> maybePath(PathView path)
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{
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if (path.length() >= 3 && (('A' <= path[0] && path[0] <= 'Z') || ('a' <= path[0] && path[0] <= 'z')) && path[1] == ':' && WindowsPathTrait<char>::isPathSep(path[2])) {
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std::filesystem::path::string_type sw = string_to_os_string(
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std::string { "\\\\?\\" } + path);
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std::replace(sw.begin(), sw.end(), '/', '\\');
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return sw;
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}
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if (path.length() >= 7 && path[0] == '\\' && path[1] == '\\' && (path[2] == '.' || path[2] == '?') && path[3] == '\\' &&
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('A' <= path[4] && path[4] <= 'Z') && path[5] == ':' && WindowsPathTrait<char>::isPathSep(path[6])) {
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std::filesystem::path::string_type sw = string_to_os_string(path);
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std::replace(sw.begin(), sw.end(), '/', '\\');
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return sw;
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}
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return std::optional<std::filesystem::path::string_type>();
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}
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std::filesystem::path pathNG(PathView path)
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{
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std::optional<std::filesystem::path::string_type> sw = maybePath(path);
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if (!sw) {
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// FIXME why are we not using the regular error handling?
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std::cerr << "invalid path for WinAPI call ["<<path<<"]"<<std::endl;
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_exit(111);
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}
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return *sw;
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}
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}
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