Function realpathW [src]
Prototype
pub fn realpathW(self: Dir, pathname: []const u16, out_buffer: []u8) RealPathError![]u8 Parameters
self: Dirpathname: []const u16out_buffer: []u8 Possible Errors
On Windows, antivirus software is enabled by default. It can be disabled, but Windows Update sometimes ignores the user's preference and re-enables it. When enabled, antivirus software on Windows intercepts file system operations and makes them significantly slower in addition to possibly failing with this error code.
Windows-only; file paths provided by the user must be valid WTF-8. https://simonsapin.github.io/wtf-8/
On Windows, \\server or \\server\share was not found.
The Operating System returned an undocumented error code.
This error is in theory not possible, but it would be better to handle this error than to invoke undefined behavior.
When this error code is observed, it usually means the Zig Standard Library needs a small patch to add the error code to the error set for the respective function.
On Windows, the volume does not contain a recognized file system. File system drivers might not be loaded, or the volume may be corrupt.
Source
pub fn realpathW(self: Dir, pathname: []const u16, out_buffer: []u8) RealPathError![]u8 {
const w = windows;
const access_mask = w.GENERIC_READ | w.SYNCHRONIZE;
const share_access = w.FILE_SHARE_READ | w.FILE_SHARE_WRITE | w.FILE_SHARE_DELETE;
const creation = w.FILE_OPEN;
const h_file = blk: {
const res = w.OpenFile(pathname, .{
.dir = self.fd,
.access_mask = access_mask,
.share_access = share_access,
.creation = creation,
.filter = .any,
}) catch |err| switch (err) {
error.WouldBlock => unreachable,
else => |e| return e,
};
break :blk res;
};
defer w.CloseHandle(h_file);
var wide_buf: [w.PATH_MAX_WIDE]u16 = undefined;
const wide_slice = try w.GetFinalPathNameByHandle(h_file, .{}, &wide_buf);
var big_out_buf: [fs.max_path_bytes]u8 = undefined;
const end_index = std.unicode.wtf16LeToWtf8(&big_out_buf, wide_slice);
if (end_index > out_buffer.len)
return error.NameTooLong;
const result = out_buffer[0..end_index];
@memcpy(result, big_out_buf[0..end_index]);
return result;
}