84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
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// SPDX-License-Identifier: LGPL-3.0-or-later
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/* osx_dir.h implementation for Windows.
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*
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* Copyright: 2022, The DoubleFourteen Code Forge
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* Author: Lorenzo Cogotti
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*/
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#include "xconf.h"
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#include "osx_dir.h"
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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DF_OSXLIB_API df_os_dirhn os_opendir(const char *path)
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{
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if (*path == '\0') { // avoid generating \* search path
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errno = ENOENT;
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return NULL;
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}
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char buf[_MAX_PATH + 2 + 1];
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int n = snprintf(buf, sizeof(buf), "%s\\*", path);
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if (n < 0)
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return NULL;
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if ((size_t) n >= sizeof(buf)) {
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errno = ERANGE;
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return NULL;
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}
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df_os_dirhn hn = malloc(sizeof(*hn));
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if (!hn)
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return NULL;
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hn->dirh = _findfirst(buf, &hn->data);
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if (hn->dirh == -1) {
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free(hn);
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return NULL;
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}
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hn->startflag = true;
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hn->errflag = false;
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hn->endflag = false;
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return hn;
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}
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DF_OSXLIB_API char *os_readdir(df_os_dirhn hn)
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{
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if (hn->startflag) {
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// Return first item found by _findfirst()
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hn->startflag = false;
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return hn->data.name;
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}
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// Reset status flags and advance directory iterator
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hn->errflag = false;
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hn->endflag = false;
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int err = errno;
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if (_findnext(hn->dirh, &hn->data) == -1) {
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if (errno == ENOENT) {
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// End of directory, this is not an error, restore old errno
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errno = err;
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hn->endflag = true;
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} else {
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hn->errflag = true;
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}
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return NULL;
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}
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return hn->data.name;
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}
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DF_OSXLIB_API void os_closedir(df_os_dirhn hn)
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{
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_findclose(hn->dirh);
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free(hn);
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}
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