src/helper/configuration.c

   1 /***************************************************************************
   2  *   Copyright (C) 2004, 2005 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
   6  *   oyvind.harboe@zylin.com                                               *
   7  *                                                                         *
   8  *   This program is free software; you can redistribute it and/or modify  *
   9  *   it under the terms of the GNU General Public License as published by  *
  10  *   the Free Software Foundation; either version 2 of the License, or     *
  11  *   (at your option) any later version.                                   *
  12  *                                                                         *
  13  *   This program is distributed in the hope that it will be useful,       *
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  16  *   GNU General Public License for more details.                          *
  17  *                                                                         *
  18  *   You should have received a copy of the GNU General Public License     *
  19  *   along with this program; if not, write to the                         *
  20  *   Free Software Foundation, Inc.,                                       *
  21  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  22  ***************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include "types.h"
  28 #include "command.h"
  29 #include "configuration.h"
  30 #include "log.h"
  31
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35
  36 static size_t num_config_files;
  37 static char** config_file_names;
  38
  39 static size_t num_script_dirs;
  40 static char** script_search_dirs;
  41
  42 void add_script_search_dir (const char *dir)
  43 {
  44         num_script_dirs++;
  45         script_search_dirs = (char **)realloc(script_search_dirs, (num_script_dirs+1) * sizeof (char *));
  46
  47         script_search_dirs[num_script_dirs-1] = strdup(dir);
  48         script_search_dirs[num_script_dirs] = NULL;
  49 }
  50
  51 void add_config_command (const char *cfg)
  52 {
  53         num_config_files++;
  54         config_file_names = (char **)realloc(config_file_names, (num_config_files+1) * sizeof (char *));
  55
  56         config_file_names[num_config_files-1] = strdup(cfg);
  57         config_file_names[num_config_files] = NULL;
  58 }
  59
  60 /* return full path or NULL according to search rules */
  61 char *find_file(const char *file)
  62 {
  63         FILE *fp = NULL;
  64         char **search_dirs = script_search_dirs;
  65         char *dir;
  66         char const *mode="r";
  67         char full_path[1024];
  68
  69         /* Check absolute and relative to current working dir first.
  70          * This keeps full_path reporting belowing working. */
  71         snprintf(full_path, 1024, "%s", file);
  72         fp = fopen(full_path, mode);
  73
  74         while (!fp)
  75         {
  76                 dir = *search_dirs++;
  77
  78                 if (!dir)
  79                         break;
  80
  81                 snprintf(full_path, 1024, "%s/%s", dir, file);
  82                 fp = fopen(full_path, mode);
  83         }
  84
  85         if (fp)
  86         {
  87                 fclose(fp);
  88                 LOG_DEBUG("found %s", full_path);
  89                 return strdup(full_path);
  90         }
  91         return NULL;
  92 }
  93
  94
  95 FILE *open_file_from_path (char *file, char *mode)
  96 {
  97         if (mode[0]!='r')
  98         {
  99                 return fopen(file, mode);
 100         } else
 101         {
 102                 char *full_path=find_file(file);
 103                 if (full_path==NULL)
 104                         return NULL;
 105                 FILE *fp = NULL;
 106                 fp = fopen(full_path, mode);
 107                 free(full_path);
 108                 return fp;
 109         }
 110 }
 111
 112 int parse_config_file(struct command_context_s *cmd_ctx)
 113 {
 114         int retval;
 115         char **cfg;
 116
 117         if (!config_file_names)
 118                 add_config_command ("script openocd.cfg");
 119
 120         cfg = config_file_names;
 121
 122         while (*cfg)
 123         {
 124                 retval=command_run_line(cmd_ctx, *cfg);
 125                 if (retval!=ERROR_OK)
 126                         return retval;
 127                 cfg++;
 128         }
 129
 130         return ERROR_OK;
 131 }