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         char buf[256];
  27         int fd;
  28
  29         fd = open(filename, O_RDONLY);
  30         if (fd >= 0)
  31                 return fd;
  32         if (!data_dir)
  33                 return -1;
  34         snprintf(buf, 256, "%s/%s", data_dir, filename);
  35         return open(buf, O_RDONLY);
  36 }
  37
  38 int open_schema_file(const char *schema)
  39 {
  40         char buf[256];
  41         int fd;
  42
  43         fd = open_data_file(schema);
  44         if (fd >= 0)
  45                 return fd;
  46         snprintf(buf, 256, "%s/smatch_data/%s", bin_dir, schema);
  47         return open(buf, O_RDONLY);
  48 }
  49
  50 struct token *get_tokens_file(const char *filename)
  51 {
  52         int fd;
  53         struct token *token;
  54
  55         if (option_no_data)
  56                 return NULL;
  57         fd = open_data_file(filename);
  58         if (fd < 0)
  59                 return NULL;
  60         token = tokenize(NULL, filename, fd, NULL, NULL);
  61         close(fd);
  62         return token;
  63 }
  64
  65 struct string_list *load_strings_from_file(const char *project, const char *filename)
  66 {
  67         struct string_list *ret = NULL;
  68         struct token *token;
  69         char buf[64];
  70         char *str;
  71
  72         if (project)
  73                 snprintf(buf, sizeof(buf), "%s.%s", project, filename);
  74         else
  75                 snprintf(buf, sizeof(buf), "%s", filename);
  76
  77         token = get_tokens_file(buf);
  78         if (!token)
  79                 return NULL;
  80
  81         if (token_type(token) != TOKEN_STREAMBEGIN)
  82                 return NULL;
  83         token = token->next;
  84         while (token_type(token) != TOKEN_STREAMEND) {
  85                 if (token_type(token) != TOKEN_IDENT)
  86                         break;
  87                 str = alloc_string(show_ident(token->ident));
  88                 add_ptr_list(&ret, str);
  89                 token = token->next;
  90         }
  91         clear_token_alloc();
  92
  93         return ret;
  94 }