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readdirw.c
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readdirw.c
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#include <malloc.h>
#include <string.h>
#include <errno.h>
#include "php.h"
#include "readdirw.h"
/**********************************************************************
* Implement dirent-style
* opendirw
* readdirw
* rewinddirw
* closedirw on Win32
*
* Functions will require Windows NT due to Unicode support.
*
* Windows 95/98/Me users don't require this,
* because their OS doesn't have Unicode file support.
**********************************************************************/
DIRW *opendirw(const wchar_t *dir)
{
DIRW *dp;
wchar_t *filespec;
HANDLE handle;
int index;
wchar_t resolved_path_buff[MAXPATHLEN];
wcsncpy(resolved_path_buff, dir, MAXPATHLEN);
filespec = (wchar_t *)malloc(sizeof(wchar_t) * (wcslen(resolved_path_buff) + 2 + 1));
if (filespec == NULL) {
return NULL;
}
wcscpy(filespec, resolved_path_buff);
index = wcslen(filespec) - 1;
if (index >= 0 && (filespec[index] == L'/' || (filespec[index] == L'\\')))
filespec[index] = L'\0';
wcscat(filespec, L"\\*");
dp = (DIRW *) malloc(sizeof(DIRW));
if (dp == NULL) {
return NULL;
}
dp->offset = 0;
dp->finished = 0;
if ((handle = FindFirstFileW(filespec, &(dp->fileinfo))) == INVALID_HANDLE_VALUE) {
DWORD err = GetLastError();
if (err == ERROR_NO_MORE_FILES || err == ERROR_FILE_NOT_FOUND) {
dp->finished = 1;
} else {
free(dp);
free(filespec);
return NULL;
}
}
dp->dir = wcsdup(resolved_path_buff);
dp->handle = handle;
free(filespec);
return dp;
}
struct direntw *readdirw(DIRW *dp)
{
if (!dp || dp->finished)
return NULL;
if (dp->offset != 0) {
if (FindNextFileW(dp->handle, &(dp->fileinfo)) == 0) {
dp->finished = 1;
return NULL;
}
}
dp->offset++;
wcsncpy(dp->dent.d_name, dp->fileinfo.cFileName, _MAX_FNAME+1);
dp->dent.d_ino = 1;
dp->dent.d_reclen = wcslen(dp->dent.d_name);
dp->dent.d_off = dp->offset;
return &(dp->dent);
}
int readdirw_r(DIRW *dp, struct direntw *entry, struct direntw **result)
{
if (!dp || dp->finished) {
*result = NULL;
return 0;
}
if (dp->offset != 0) {
if (FindNextFileW(dp->handle, &(dp->fileinfo)) == 0) {
dp->finished = 1;
*result = NULL;
return 0;
}
}
dp->offset++;
wcsncpy(dp->dent.d_name, dp->fileinfo.cFileName, _MAX_FNAME+1);
dp->dent.d_ino = 1;
dp->dent.d_reclen = wcslen(dp->dent.d_name);
dp->dent.d_off = dp->offset;
memcpy(entry, &dp->dent, sizeof(*entry));
*result = &dp->dent;
return 0;
}
int closedirw(DIRW *dp)
{
if (!dp)
return 0;
/* It is valid to scan an empty directory but we have an invalid
handle in this case (no first file found). */
if (dp->handle != INVALID_HANDLE_VALUE) {
FindClose(dp->handle);
}
if (dp->dir)
free(dp->dir);
if (dp)
free(dp);
return 0;
}
int rewinddirw(DIRW *dp)
{
/* Re-set to the beginning */
wchar_t *filespec;
HANDLE handle;
int index;
FindClose(dp->handle);
dp->offset = 0;
dp->finished = 0;
filespec = (wchar_t *)malloc(sizeof(wchar_t) * (wcslen(dp->dir) + 2 + 1));
if (filespec == NULL) {
return -1;
}
wcscpy(filespec, dp->dir);
index = wcslen(filespec) - 1;
if (index >= 0 && (filespec[index] == L'/' || (filespec[index] == L'\\')))
filespec[index] = L'\0';
wcscat(filespec, L"/*");
if ((handle = FindFirstFileW(filespec, &(dp->fileinfo))) == INVALID_HANDLE_VALUE) {
dp->finished = 1;
}
dp->handle = handle;
free(filespec);
return 0;
}