smatch_files.c

   1 /*
   2  * Copyright (C) 2009 Dan Carpenter.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
  16  */
  17
  18 #include <string.h>
  19 #include <fcntl.h>
  20 #include <unistd.h>
  21 #include "parse.h"
  22 #include "smatch.h"
  23
  24 int open_data_file(const char *filename)
  25 {
  26         int fd;
  27         char buf[256];
  28
  29         fd = open(filename, O_RDONLY);
  30         if (fd >= 0)
  31                 goto exit;
  32         if (!data_dir)
  33                 goto exit;
  34         snprintf(buf, 256, "%s/%s", data_dir, filename);
  35         fd = open(buf, O_RDONLY);
  36 exit:
  37         return fd;
  38 }
  39
  40 struct token *get_tokens_file(const char *filename)
  41 {
  42         int fd;
  43         struct token *token;
  44
  45         if (option_no_data)
  46                 return NULL;
  47         fd = open_data_file(filename);
  48         if (fd < 0)
  49                 return NULL;
  50         token = tokenize(filename, fd, NULL, NULL);
  51         close(fd);
  52         return token;
  53 }