client/src/scandir.c

   1 /* scandir.cc
   2
   3    Copyright 1998, 1999, 2000, 2001 Red Hat, Inc.
   4
   5    Written by Corinna Vinschen <corinna.vinschen@cityweb.de>
   6
   7    This file is part of Cygwin.
   8
   9    This software is a copyrighted work licensed under the terms of the
  10    Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
  11    details. */
  12
  13 #include "scandir.h"
  14
  15 #ifdef _WIN32
  16
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21 int scandir(const char *dir,
  22             struct dirent ***namelist,
  23             int (*select)(const struct dirent *),
  24             int (*compar)(const struct dirent **, const struct dirent **)) {
  25     DIR *dirp;
  26     struct dirent *ent, *etmp, **nl = NULL, **ntmp;
  27     int count = 0;
  28     int allocated = 0;
  29     int err_no = 0;
  30
  31     if (!(dirp = opendir(dir)))
  32         return -1;
  33
  34     while ((ent = readdir(dirp))) {
  35         if (!select || select(ent)) {
  36
  37             err_no = 0;
  38
  39             if (count == allocated) {
  40                 if (allocated == 0)
  41                     allocated = 10;
  42                 else
  43                     allocated *= 2;
  44
  45                 ntmp = (struct dirent **) realloc(nl, allocated * sizeof * nl);
  46                 if (!ntmp) {
  47                     err_no = 1;
  48                     break;
  49                 }
  50                 nl = ntmp;
  51             }
  52
  53             etmp = (struct dirent *) calloc(sizeof * ent, sizeof(char));
  54             if (!etmp) {
  55                 err_no = 1;
  56                 break;
  57             }
  58             *etmp = *ent;
  59             nl[count++] = etmp;
  60         }
  61     }
  62
  63     if (err_no != 0) {
  64         closedir(dirp);
  65         if (nl) {
  66             while (count > 0) {
  67                 free(nl[--count]);
  68             }
  69             free(nl);
  70         }
  71         return -1;
  72     }
  73
  74     closedir(dirp);
  75
  76     qsort(nl, count, sizeof * nl, (int (*)(const void *, const void *)) compar);
  77     if (namelist)
  78         *namelist = nl;
  79     return count;
  80 }
  81 #ifdef __cplusplus
  82 }
  83 #endif
  84
  85 #ifdef __cplusplus
  86 extern "C" {
  87 #endif
  88 int alphasort(const struct dirent **a, const struct dirent **b) {
  89     return strcoll((*a)->d_name, (*b)->d_name);
  90 }
  91 #ifdef __cplusplus
  92 }
  93 #endif
  94
  95 #endif  // win32