src/freedreno/rnn/path.c

   1 /*
   2  * Copyright (C) 2011 Marcin Kościelnicki <koriakin@0x04.net>
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include "util.h"
  26 #include <string.h>
  27
  28 FILE *find_in_path(const char *name, const char *path, char **pfullname) {
  29         if (!path)
  30                 return 0;
  31         while (path) {
  32                 const char *npath = strchr(path, ':');
  33                 size_t plen;
  34                 if (npath) {
  35                         plen = npath - path;
  36                         npath++;
  37                 } else {
  38                         plen = strlen(path);
  39                 }
  40                 if (plen) {
  41                         char *fullname = malloc(strlen(name) + plen + 2);
  42                         strncpy(fullname, path, plen);
  43                         fullname[plen] = '/';
  44                         fullname[plen+1] = 0;
  45                         strcat(fullname, name);
  46                         FILE *file = fopen(fullname, "r");
  47                         if (file) {
  48                                 if (pfullname)
  49                                         *pfullname = fullname;
  50                                 else
  51                                         free(fullname);
  52                                 return file;
  53                         }
  54                         free(fullname);
  55                 }
  56                 path = npath;
  57         }
  58         return 0;
  59 }