/*
* Helper function for search_path
*/
static WCHAR* path_search_walk_ext(const WCHAR* dir, size_t dir_len,
const WCHAR* name, size_t name_len,
WCHAR* cwd, size_t cwd_len,
int name_has_ext) {
WCHAR* result;
/* If the name itself has a nonempty extension, try this extension first */
if (name_has_ext) {
result = search_path_join_test(dir, dir_len, name, name_len, L"", 0, cwd,
cwd_len);
if (result != NULL) {
return result;
}
}
/* Try .com extension */
result = search_path_join_test(dir, dir_len, name, name_len, L"com", 3, cwd,
cwd_len);
if (result != NULL) {
return result;
}
/* Try .exe extension */
result = search_path_join_test(dir, dir_len, name, name_len, L"exe", 3, cwd,
cwd_len);
if (result != NULL) {
return result;
}
return NULL;
}
/*
* Helper function for search_path
*/
static wchar_t* path_search_walk_ext(const wchar_t *dir,
int dir_len,
const wchar_t *name,
int name_len,
wchar_t *cwd,
int cwd_len,
const wchar_t *path_ext,
int name_has_ext) {
wchar_t* result = NULL;
const wchar_t *ext_start,
*ext_end = path_ext;
/* If the name itself has a nonemtpy extension, try this extension first */
if (name_has_ext) {
result = search_path_join_test(dir, dir_len,
name, name_len,
L"", 0,
cwd, cwd_len);
}
/* Add path_ext extensions and try to find a name that matches */
while (result == NULL) {
if (*ext_end == L'\0') {
break;
}
/* Skip the separator that ext_end now points to */
if (ext_end != path_ext) {
ext_end++;
}
/* Find the next dot in path_ext */
ext_start = wcschr(ext_end, L'.');
if (ext_start == NULL) {
break;
}
/* Skip the dot */
ext_start++;
/* Slice until we found a ; or alternatively a \0 */
ext_end = wcschr(ext_start, L';');
if (ext_end == NULL) {
ext_end = wcschr(ext_start, '\0');
}
result = search_path_join_test(dir, dir_len,
name, name_len,
ext_start, (ext_end - ext_start),
cwd, cwd_len);
}
return result;
}
