static struct dirent *dirent_readdir(dirent_DIR *dir)
{
if (!dir) {
errno = EBADF; /* No set_errno for mingw */
return NULL;
}
/* if first entry, dirent has already been set up by opendir */
if (dir->dd_stat) {
/* get next entry and convert from WIN32_FIND_DATA to dirent */
WIN32_FIND_DATAW fdata;
if (FindNextFileW(dir->dd_handle, &fdata)) {
finddata2dirent(&dir->dd_dir, &fdata);
} else {
DWORD lasterr = GetLastError();
/* POSIX says you shouldn't set errno when readdir can't
find any more files; so, if another error we leave it set. */
if (lasterr != ERROR_NO_MORE_FILES)
errno = err_win_to_posix(lasterr);
return NULL;
}
}
++dir->dd_stat;
return &dir->dd_dir;
}
DIR *dirent_opendir(const char *name)
{
wchar_t pattern[MAX_PATH + 2]; /* + 2 for '/' '*' */
WIN32_FIND_DATAW fdata;
HANDLE h;
int len;
dirent_DIR *dir;
/* convert name to UTF-16 and check length < MAX_PATH */
if ((len = xutftowcs_canonical_path(pattern, name)) < 0)
return NULL;
/*
* append optional '\' and wildcard '*'
* note: when using "\\?\" as a prefix for long paths,
* we cannot expect Windows to remap '/' to '\' for us.
*/
if (len && !is_dir_sep(pattern[len - 1]))
pattern[len++] = '\\';
pattern[len++] = '*';
pattern[len] = 0;
/* open find handle */
h = FindFirstFileW(pattern, &fdata);
if (h == INVALID_HANDLE_VALUE) {
DWORD err = GetLastError();
errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
return NULL;
}
/* initialize DIR structure and copy first dir entry */
dir = xmalloc(sizeof(dirent_DIR));
dir->base_dir.preaddir = (struct dirent *(*)(DIR *dir)) dirent_readdir;
dir->base_dir.pclosedir = (int (*)(DIR *dir)) dirent_closedir;
dir->dd_dir.d_name = dir->dd_name;
dir->dd_handle = h;
dir->dd_stat = 0;
finddata2dirent(&dir->dd_dir, &fdata);
return (DIR*) dir;
}
DIR *dirent_opendir(const char *name)
{
wchar_t pattern[MAX_LONG_PATH + 2]; /* + 2 for "\*" */
WIN32_FIND_DATAW fdata;
HANDLE h;
int len;
dirent_DIR *dir;
/* convert name to UTF-16 and check length */
if ((len = xutftowcs_path_ex(pattern, name, MAX_LONG_PATH, -1,
MAX_PATH - 2, core_long_paths)) < 0)
return NULL;
/*
* append optional '\' and wildcard '*'. Note: we need to use '\' as
* Windows doesn't translate '/' to '\' for "\\?\"-prefixed paths.
*/
if (len && !is_dir_sep(pattern[len - 1]))
pattern[len++] = '\\';
pattern[len++] = '*';
pattern[len] = 0;
/* open find handle */
h = FindFirstFileW(pattern, &fdata);
if (h == INVALID_HANDLE_VALUE) {
DWORD err = GetLastError();
errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
return NULL;
}
/* initialize DIR structure and copy first dir entry */
dir = xmalloc(sizeof(dirent_DIR));
dir->base_dir.preaddir = (struct dirent *(*)(DIR *dir)) dirent_readdir;
dir->base_dir.pclosedir = (int (*)(DIR *dir)) dirent_closedir;
dir->dd_dir.d_name = dir->dd_name;
dir->dd_handle = h;
dir->dd_stat = 0;
finddata2dirent(&dir->dd_dir, &fdata);
return (DIR*) dir;
}