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dis-bench / src /php /php-src /win32 /readdir.c
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meddyrat
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#include "php.h"
#include <malloc.h>
#include <string.h>
#include <errno.h>
#include "readdir.h"
#include "win32/ioutil.h"
/**********************************************************************
* Implement dirent-style opendir/readdir/rewinddir/closedir on Win32
*
* Functions defined are opendir(), readdir(), rewinddir() and
* closedir() with the same prototypes as the normal dirent.h
* implementation.
*
* Does not implement telldir(), seekdir(), or scandir(). The dirent
* struct is compatible with Unix, except that d_ino is always 1 and
* d_off is made up as we go along.
*
* The DIR typedef is not compatible with Unix.
**********************************************************************/
DIR *opendir(const char *dir)
{/*{{{*/
DIR *dp;
wchar_t *filespecw, *resolvedw;
HANDLE handle;
char resolved_path_buff[MAXPATHLEN];
size_t resolvedw_len, filespecw_len, index;
bool might_need_prefix;
if (!VCWD_REALPATH(dir, resolved_path_buff)) {
return NULL;
}
resolvedw = php_win32_ioutil_conv_any_to_w(resolved_path_buff, PHP_WIN32_CP_IGNORE_LEN, &resolvedw_len);
if (!resolvedw) {
return NULL;
}
might_need_prefix = resolvedw_len >= 3 && PHP_WIN32_IOUTIL_IS_LETTERW(resolvedw[0]) && L':' == resolvedw[1] && PHP_WIN32_IOUTIL_IS_SLASHW(resolvedw[2]);
filespecw_len = resolvedw_len + 2;
if (filespecw_len >= _MAX_PATH && might_need_prefix) {
filespecw_len += PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW;
}
filespecw = (wchar_t *)malloc((filespecw_len + 1)*sizeof(wchar_t));
if (filespecw == NULL) {
free(resolvedw);
return NULL;
}
if (filespecw_len >= _MAX_PATH && might_need_prefix) {
wcscpy(filespecw, PHP_WIN32_IOUTIL_LONG_PATH_PREFIXW);
wcscpy(filespecw + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW, resolvedw);
index = resolvedw_len + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW - 1;
} else {
wcscpy(filespecw, resolvedw);
index = resolvedw_len - 1;
}
if ((index >= 0 && filespecw[index] == L'/') || (index == 0 && filespecw[index] == L'\\'))
filespecw[index] = L'\0';
wcscat(filespecw, L"\\*");
dp = (DIR *) calloc(1, sizeof(DIR) + (_MAX_FNAME*5+1)*sizeof(char));
if (dp == NULL) {
free(filespecw);
free(resolvedw);
return NULL;
}
if ((handle = FindFirstFileExW(filespecw, FindExInfoBasic, &(dp->fileinfo), FindExSearchNameMatch, NULL, FIND_FIRST_EX_LARGE_FETCH)) == INVALID_HANDLE_VALUE) {
DWORD err = GetLastError();
if (err == ERROR_NO_MORE_FILES || err == ERROR_FILE_NOT_FOUND) {
dp->finished = 1;
} else {
free(dp);
free(filespecw);
free(resolvedw);
return NULL;
}
}
dp->dirw = _wcsdup(resolvedw);
dp->handle = handle;
dp->offset = 0;
dp->finished = 0;
free(filespecw);
free(resolvedw);
return dp;
}/*}}}*/
struct dirent *readdir(DIR *dp)
{/*{{{*/
char *_tmp;
size_t reclen;
if (!dp || dp->finished)
return NULL;
if (dp->offset != 0) {
if (FindNextFileW(dp->handle, &(dp->fileinfo)) == 0) {
dp->finished = 1;
return NULL;
}
}
_tmp = php_win32_cp_conv_w_to_any(dp->fileinfo.cFileName, PHP_WIN32_CP_IGNORE_LEN, &reclen);
if (!_tmp) {
/* wide to utf8 failed, should never happen. */
return NULL;
}
memmove(dp->dent.d_name, _tmp, reclen + 1);
free(_tmp);
dp->dent.d_reclen = (unsigned short)reclen;
dp->offset++;
dp->dent.d_ino = 1;
dp->dent.d_off = dp->offset;
if (dp->fileinfo.dwFileAttributes & (FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DEVICE)) {
dp->dent.d_type = DT_UNKNOWN; /* conservative */
} else if (dp->fileinfo.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
dp->dent.d_type = DT_DIR;
} else {
dp->dent.d_type = DT_REG;
}
return &(dp->dent);
}/*}}}*/
int closedir(DIR *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->dirw)
free(dp->dirw);
if (dp)
free(dp);
return 0;
}/*}}}*/
int rewinddir(DIR *dp)
{/*{{{*/
/* Re-set to the beginning */
wchar_t *filespecw;
HANDLE handle;
size_t dirw_len, filespecw_len, index;
bool might_need_prefix;
FindClose(dp->handle);
dp->offset = 0;
dp->finished = 0;
/* XXX save the dir len into the struct. */
dirw_len = wcslen((wchar_t *)dp->dirw);
might_need_prefix = dirw_len >= 3 && PHP_WIN32_IOUTIL_IS_LETTERW(dp->dirw[0]) && L':' == dp->dirw[1] && PHP_WIN32_IOUTIL_IS_SLASHW(dp->dirw[2]);
filespecw_len = dirw_len + 2;
if (filespecw_len >= _MAX_PATH && might_need_prefix) {
filespecw_len += PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW;
}
filespecw = (wchar_t *)malloc((filespecw_len + 1)*sizeof(wchar_t));
if (filespecw == NULL) {
return -1;
}
if (filespecw_len >= _MAX_PATH && might_need_prefix) {
wcscpy(filespecw, PHP_WIN32_IOUTIL_LONG_PATH_PREFIXW);
wcscpy(filespecw + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW, dp->dirw);
index = dirw_len + PHP_WIN32_IOUTIL_LONG_PATH_PREFIX_LENW - 1;
} else {
wcscpy(filespecw, dp->dirw);
index = dirw_len - 1;
}
if (index >= 0 && (filespecw[index] == L'/' ||
(filespecw[index] == L'\\' && index == 0)))
filespecw[index] = L'\0';
wcscat(filespecw, L"\\*");
if ((handle = FindFirstFileExW(filespecw, FindExInfoBasic, &(dp->fileinfo), FindExSearchNameMatch, NULL, FIND_FIRST_EX_LARGE_FETCH)) == INVALID_HANDLE_VALUE) {
dp->finished = 1;
}
free(filespecw);
dp->handle = handle;
return 0;
}/*}}}*/