root/main/php_scandir.c

DEFINITIONS

1. php_alphasort
2. php_scandir

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PHP Version 7                                                        |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 1997-2016 The PHP Group                                |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15    | Author: Shane Caraveo <shane@caraveo.com>                            |
  16    |         Ilia Alshanetsky <ilia@prohost.org>                          |
  17    +----------------------------------------------------------------------+
  18  */
  19 
  20 /* $Id$ */
  21 
  22 #include "php.h"
  23 #include "php_scandir.h"
  24 
  25 #ifdef HAVE_SYS_TYPES_H
  26 #include <sys/types.h>
  27 #endif
  28 
  29 #ifdef HAVE_DIRENT_H
  30 #include <dirent.h>
  31 #endif
  32 
  33 #ifndef HAVE_SCANDIR
  34 
  35 #ifdef PHP_WIN32
  36 #include "win32/param.h"
  37 #include "win32/readdir.h"
  38 #endif
  39 
  40 #include <stdlib.h>
  41 #ifndef NETWARE
  42 #include <search.h>
  43 #endif
  44 
  45 #endif /* HAVE_SCANDIR */
  46 
  47 #ifndef HAVE_ALPHASORT
  48 
  49 #ifdef HAVE_STRING_H
  50 #include <string.h>
  51 #endif
  52 
  53 PHPAPI int php_alphasort(const struct dirent **a, const struct dirent **b)
  54 {
  55         return strcoll((*a)->d_name,(*b)->d_name);
  56 }
  57 #endif /* HAVE_ALPHASORT */
  58 
  59 #ifndef HAVE_SCANDIR
  60 PHPAPI int php_scandir(const char *dirname, struct dirent **namelist[], int (*selector) (const struct dirent *entry), int (*compare) (const struct dirent **a, const struct dirent **b))
  61 {
  62         DIR *dirp = NULL;
  63         struct dirent **vector = NULL;
  64         int vector_size = 0;
  65         int nfiles = 0;
  66         char entry[sizeof(struct dirent)+MAXPATHLEN];
  67         struct dirent *dp = (struct dirent *)&entry;
  68 
  69         if (namelist == NULL) {
  70                 return -1;
  71         }
  72 
  73         if (!(dirp = opendir(dirname))) {
  74                 return -1;
  75         }
  76 
  77         while (!php_readdir_r(dirp, (struct dirent *)entry, &dp) && dp) {
  78                 int dsize = 0;
  79                 struct dirent *newdp = NULL;
  80 
  81                 if (selector && (*selector)(dp) == 0) {
  82                         continue;
  83                 }
  84 
  85                 if (nfiles == vector_size) {
  86                         struct dirent **newv;
  87                         if (vector_size == 0) {
  88                                 vector_size = 10;
  89                         } else {
  90                                 vector_size *= 2;
  91                         }
  92 
  93                         newv = (struct dirent **) realloc (vector, vector_size * sizeof (struct dirent *));
  94                         if (!newv) {
  95                                 return -1;
  96                         }
  97                         vector = newv;
  98                 }
  99 
 100                 dsize = sizeof (struct dirent) + (((int)strlen(dp->d_name) + 1) * sizeof(char));
 101                 newdp = (struct dirent *) malloc(dsize);
 102 
 103                 if (newdp == NULL) {
 104                         goto fail;
 105                 }
 106 
 107                 vector[nfiles++] = (struct dirent *) memcpy(newdp, dp, dsize);
 108         }
 109 
 110         closedir(dirp);
 111 
 112         *namelist = vector;
 113 
 114         if (compare) {
 115                 qsort (*namelist, nfiles, sizeof(struct dirent *), (int (*) (const void *, const void *)) compare);
 116         }
 117 
 118         return nfiles;
 119 
 120 fail:
 121         while (nfiles-- > 0) {
 122                 free(vector[nfiles]);
 123         }
 124         free(vector);
 125         return -1;
 126 }
 127 #endif
 128 
 129 /*
 130  * Local variables:
 131  * tab-width: 4
 132  * c-basic-offset: 4
 133  * End:
 134  * vim600: sw=4 ts=4 fdm=marker
 135  * vim<600: sw=4 ts=4
 136  */