src/helper/options.c

   1 /***************************************************************************
   2  *   Copyright (C) 2004, 2005 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   Copyright (C) 2007-2010 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  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  22  ***************************************************************************/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include "config.h"
  26 #endif
  27
  28 #include "configuration.h"
  29 #include "log.h"
  30 #include "command.h"
  31
  32 #include <getopt.h>
  33
  34 static int help_flag, version_flag;
  35
  36 static const struct option long_options[] = {
  37         {"help",                no_argument,                    &help_flag,             1},
  38         {"version",             no_argument,                    &version_flag,  1},
  39         {"debug",               optional_argument,              0,                              'd'},
  40         {"file",                required_argument,              0,                              'f'},
  41         {"search",              required_argument,              0,                              's'},
  42         {"log_output",  required_argument,              0,                              'l'},
  43         {"command",             required_argument,              0,                              'c'},
  44         {"pipe",                no_argument,                    0,                              'p'},
  45         {0, 0, 0, 0}
  46 };
  47
  48 int configuration_output_handler(struct command_context *context, const char *line)
  49 {
  50         LOG_USER_N("%s", line);
  51
  52         return ERROR_OK;
  53 }
  54
  55 #ifdef _WIN32
  56 static char *find_suffix(const char *text, const char *suffix)
  57 {
  58         size_t text_len = strlen(text);
  59         size_t suffix_len = strlen(suffix);
  60
  61         if (suffix_len == 0)
  62                 return (char *)text + text_len;
  63
  64         if (suffix_len > text_len || strncmp(text + text_len - suffix_len, suffix, suffix_len) != 0)
  65                 return NULL; /* Not a suffix of text */
  66
  67         return (char *)text + text_len - suffix_len;
  68 }
  69 #endif
  70
  71 static void add_default_dirs(void)
  72 {
  73         const char *run_prefix;
  74         char *path;
  75
  76 #ifdef _WIN32
  77         char strExePath[MAX_PATH];
  78         GetModuleFileName(NULL, strExePath, MAX_PATH);
  79
  80         /* Strip executable file name, leaving path */
  81         *strrchr(strExePath, '\\') = '\0';
  82
  83         /* Convert path separators to UNIX style, should work on Windows also. */
  84         for (char *p = strExePath; *p; p++) {
  85                 if (*p == '\\')
  86                         *p = '/';
  87         }
  88
  89         char *end_of_prefix = find_suffix(strExePath, BINDIR);
  90         if (end_of_prefix != NULL)
  91                 *end_of_prefix = '\0';
  92
  93         run_prefix = strExePath;
  94 #else
  95         run_prefix = "";
  96 #endif
  97
  98         LOG_DEBUG("bindir=%s", BINDIR);
  99         LOG_DEBUG("pkgdatadir=%s", PKGDATADIR);
 100         LOG_DEBUG("run_prefix=%s", run_prefix);
 101
 102         /*
 103          * The directory containing OpenOCD-supplied scripts should be
 104          * listed last in the built-in search order, so the user can
 105          * override these scripts with site-specific customizations.
 106          */
 107         const char *home = getenv("HOME");
 108
 109         if (home) {
 110                 path = alloc_printf("%s/.openocd", home);
 111                 if (path) {
 112                         add_script_search_dir(path);
 113                         free(path);
 114                 }
 115         }
 116
 117         path = getenv("OPENOCD_SCRIPTS");
 118
 119         if (path)
 120                 add_script_search_dir(path);
 121
 122 #ifdef _WIN32
 123         const char *appdata = getenv("APPDATA");
 124
 125         if (appdata) {
 126                 path = alloc_printf("%s/OpenOCD", appdata);
 127                 if (path) {
 128                         add_script_search_dir(path);
 129                         free(path);
 130                 }
 131         }
 132 #endif
 133
 134         path = alloc_printf("%s%s%s", run_prefix, PKGDATADIR, "/site");
 135         if (path) {
 136                 add_script_search_dir(path);
 137                 free(path);
 138         }
 139
 140         path = alloc_printf("%s%s%s", run_prefix, PKGDATADIR, "/scripts");
 141         if (path) {
 142                 add_script_search_dir(path);
 143                 free(path);
 144         }
 145 }
 146
 147 int parse_cmdline_args(struct command_context *cmd_ctx, int argc, char *argv[])
 148 {
 149         int c;
 150
 151         while (1) {
 152                 /* getopt_long stores the option index here. */
 153                 int option_index = 0;
 154
 155                 c = getopt_long(argc, argv, "hvd::l:f:s:c:p", long_options, &option_index);
 156
 157                 /* Detect the end of the options. */
 158                 if (c == -1)
 159                         break;
 160
 161                 switch (c) {
 162                         case 0:
 163                                 break;
 164                         case 'h':               /* --help | -h */
 165                                 help_flag = 1;
 166                                 break;
 167                         case 'v':               /* --version | -v */
 168                                 version_flag = 1;
 169                                 break;
 170                         case 'f':               /* --file | -f */
 171                         {
 172                                 char *command = alloc_printf("script {%s}", optarg);
 173                                 add_config_command(command);
 174                                 free(command);
 175                                 break;
 176                         }
 177                         case 's':               /* --search | -s */
 178                                 add_script_search_dir(optarg);
 179                                 break;
 180                         case 'd':               /* --debug | -d */
 181                         {
 182                                 char *command = alloc_printf("debug_level %s", optarg ? optarg : "3");
 183                                 command_run_line(cmd_ctx, command);
 184                                 free(command);
 185                                 break;
 186                         }
 187                         case 'l':               /* --log_output | -l */
 188                                 if (optarg) {
 189                                         char *command = alloc_printf("log_output %s", optarg);
 190                                         command_run_line(cmd_ctx, command);
 191                                         free(command);
 192                                 }
 193                                 break;
 194                         case 'c':               /* --command | -c */
 195                                 if (optarg)
 196                                     add_config_command(optarg);
 197                                 break;
 198                         case 'p':
 199                                 /* to replicate the old syntax this needs to be synchronous
 200                                  * otherwise the gdb stdin will overflow with the warning message */
 201                                 command_run_line(cmd_ctx, "gdb_port pipe; log_output openocd.log");
 202                                 LOG_WARNING("deprecated option: -p/--pipe. Use '-c \"gdb_port pipe; "
 203                                                 "log_output openocd.log\"' instead.");
 204                                 break;
 205                 }
 206         }
 207
 208         if (help_flag) {
 209                 LOG_OUTPUT("Open On-Chip Debugger\nLicensed under GNU GPL v2\n");
 210                 LOG_OUTPUT("--help       | -h\tdisplay this help\n");
 211                 LOG_OUTPUT("--version    | -v\tdisplay OpenOCD version\n");
 212                 LOG_OUTPUT("--file       | -f\tuse configuration file <name>\n");
 213                 LOG_OUTPUT("--search     | -s\tdir to search for config files and scripts\n");
 214                 LOG_OUTPUT("--debug      | -d\tset debug level <0-3>\n");
 215                 LOG_OUTPUT("--log_output | -l\tredirect log output to file <name>\n");
 216                 LOG_OUTPUT("--command    | -c\trun <command>\n");
 217                 exit(-1);
 218         }
 219
 220         if (version_flag) {
 221                 /* Nothing to do, version gets printed automatically. */
 222                 /* It is not an error to request the VERSION number. */
 223                 exit(0);
 224         }
 225
 226         /* paths specified on the command line take precedence over these
 227          * built-in paths
 228          */
 229         add_default_dirs();
 230
 231         return ERROR_OK;
 232 }