int git_win32_path_from_utf8(git_win32_path out, const char *src)
{
wchar_t *dest = out;
/* All win32 paths are in NT-prefixed format, beginning with "\\?\". */
memcpy(dest, PATH__NT_NAMESPACE, sizeof(wchar_t) * PATH__NT_NAMESPACE_LEN);
dest += PATH__NT_NAMESPACE_LEN;
/* See if this is an absolute path (beginning with a drive letter) */
if (path__is_absolute(src)) {
if (git__utf8_to_16(dest, MAX_PATH, src) < 0)
return -1;
}
/* File-prefixed NT-style paths beginning with \\?\ */
else if (path__is_nt_namespace(src)) {
/* Skip the NT prefix, the destination already contains it */
if (git__utf8_to_16(dest, MAX_PATH, src + PATH__NT_NAMESPACE_LEN) < 0)
return -1;
}
/* UNC paths */
else if (path__is_unc(src)) {
memcpy(dest, L"UNC\\", sizeof(wchar_t) * 4);
dest += 4;
/* Skip the leading "\\" */
if (git__utf8_to_16(dest, MAX_PATH - 2, src + 2) < 0)
return -1;
}
/* Absolute paths omitting the drive letter */
else if (src[0] == '\\' || src[0] == '/') {
if (path__cwd(dest, MAX_PATH) < 0)
return -1;
if (!path__is_absolute(dest)) {
errno = ENOENT;
return -1;
}
/* Skip the drive letter specification ("C:") */
if (git__utf8_to_16(dest + 2, MAX_PATH - 2, src) < 0)
return -1;
}
/* Relative paths */
else {
int cwd_len;
if ((cwd_len = git_win32_path__cwd(dest, MAX_PATH)) < 0)
return -1;
dest[cwd_len++] = L'\\';
if (git__utf8_to_16(dest + cwd_len, MAX_PATH - cwd_len, src) < 0)
return -1;
}
return git_win32_path_canonicalize(out);
}
static wchar_t *path__skip_prefix(wchar_t *path)
{
if (path__is_nt_namespace(path)) {
path += PATH__NT_NAMESPACE_LEN;
if (wcsncmp(path, L"UNC\\", 4) == 0)
path = path__skip_server(path + 4);
else if (path__is_absolute(path))
path += PATH__ABSOLUTE_LEN;
} else if (path__is_absolute(path)) {
path += PATH__ABSOLUTE_LEN;
} else if (path__is_unc(path)) {
path = path__skip_server(path + 2);
}
return path;
}