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Factor out lookupExecutable and other PATH improvments

Browse source 
This ended up motivating a good deal of other infra improvements in
order to get Windows right:

- `OsString` to complement `std::filesystem::path`

- env var code for working with the underlying `OsString`s

- Rename `PATHNG_LITERAL` to `OS_STR`

- `NativePathTrait` renamed to `OsPathTrait`, given a character template
  parameter until #9205 is complete.

Split `tests.cc` matching split of `util.{cc,hh}` last year.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
This commit is contained in:
John Ericson 2024-08-05 12:05:29 -04:00
parent 0836888002
commit 6c861b9c51
32 changed files with 616 additions and 97 deletions
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12
src/libutil/windows/file-path.cc
View file

@ -9,18 +9,6 @@
namespace nix {
std::string os_string_to_string(PathViewNG::string_view path)
{
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
return converter.to_bytes(std::filesystem::path::string_type { path });
}
std::filesystem::path::string_type string_to_os_string(std::string_view s)
{
std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
return converter.from_bytes(std::string { s });
}
std::optional<std::filesystem::path> maybePath(PathView path)
{
if (path.length() >= 3 && (('A' <= path[0] && path[0] <= 'Z') || ('a' <= path[0] && path[0] <= 'z')) && path[1] == ':' && WindowsPathTrait<char>::isPathSep(path[2])) {