parser-mpcmd.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer 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 along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <errno.h>
  25 #include <assert.h>
  26 #include <stdbool.h>
  27
  28 #include "mp_msg.h"
  29 #include "m_option.h"
  30 #include "m_config.h"
  31 #include "playtree.h"
  32 #include "parser-mpcmd.h"
  33 #include "osdep/macosx_finder_args.h"
  34
  35 #define GLOBAL 0
  36 #define LOCAL 1
  37
  38 #define dvd_range(a)  (a > 0 && a < 256)
  39
  40
  41 static inline void add_entry(play_tree_t **last_parentp,
  42                              play_tree_t **last_entryp, play_tree_t *entry)
  43 {
  44     if (*last_entryp == NULL)
  45         play_tree_set_child(*last_parentp, entry);
  46     else
  47         play_tree_append_entry(*last_entryp, entry);
  48     *last_entryp = entry;
  49 }
  50
  51 static bool split_opt(struct bstr *opt, struct bstr *param, bool *old_syntax)
  52 {
  53     if (!bstr_startswith0(*opt, "-") || opt->len == 1)
  54         return false;
  55     if (bstr_startswith0(*opt, "--")) {
  56         *old_syntax = false;
  57         *opt = bstr_cut(*opt, 2);
  58         *param = bstr(NULL);
  59         int idx = bstrchr(*opt, '=');
  60         if (idx > 0) {
  61             *param = bstr_cut(*opt, idx + 1);
  62             *opt = bstr_splice(*opt, 0, idx);
  63         }
  64     } else {
  65         *old_syntax = true;
  66         *opt = bstr_cut(*opt, 1);
  67     }
  68     return true;
  69 }
  70
  71
  72 // Parse command line to set up config and playtree
  73 play_tree_t *m_config_parse_mp_command_line(m_config_t *config, int argc,
  74                                             char **argv)
  75 {
  76     int mode = 0;
  77     bool no_more_opts = false;
  78     bool opt_exit = false;   // exit immediately after parsing (help options)
  79     play_tree_t *last_parent, *last_entry = NULL, *root;
  80     struct bstr orig_opt;
  81
  82     assert(config != NULL);
  83     assert(argv != NULL);
  84     assert(argc >= 1);
  85
  86     config->mode = M_COMMAND_LINE;
  87     mode = GLOBAL;
  88 #ifdef CONFIG_MACOSX_FINDER
  89     root = macosx_finder_args(config, argc, argv);
  90     if (root)
  91         return root;
  92 #endif
  93
  94     last_parent = root = play_tree_new();
  95
  96     for (int i = 1; i < argc; i++) {
  97         //next:
  98         struct bstr opt = bstr(argv[i]);
  99         orig_opt = opt;
 100         /* check for -- (no more options id.) except --help! */
 101         if (!bstrcmp0(opt, "--")) {
 102             no_more_opts = true;
 103             continue;
 104         }
 105         if (!bstrcmp0(opt, "{")) {
 106             play_tree_t *entry = play_tree_new();
 107             mode = LOCAL;
 108             if (last_parent->flags & PLAY_TREE_RND)
 109                 entry->flags |= PLAY_TREE_RND;
 110             if (last_entry == NULL)
 111                 play_tree_set_child(last_parent, entry);
 112             else {
 113                 play_tree_append_entry(last_entry, entry);
 114                 last_entry = NULL;
 115             }
 116             last_parent = entry;
 117             continue;
 118         }
 119
 120         if (!bstrcmp0(opt, "}")) {
 121             if (!last_parent || !last_parent->parent) {
 122                 mp_msg(MSGT_CFGPARSER, MSGL_ERR, "too much }-\n");
 123                 goto err_out;
 124             }
 125             last_entry = last_parent;
 126             last_parent = last_entry->parent;
 127             continue;
 128         }
 129
 130         struct bstr param = bstr(i+1 < argc ? argv[i+1] : NULL);
 131         bool old_syntax;
 132         if (!no_more_opts && split_opt(&opt, &param, &old_syntax)) {
 133             // Handle some special arguments outside option parser.
 134             // --loop when it applies to a group of files (per-file is option)
 135             if (bstrcasecmp0(opt, "loop") == 0 &&
 136                 (!last_entry || last_entry->child)) {
 137                 struct bstr rest;
 138                 int l = bstrtoll(param, &rest, 0);
 139                 if (!param.len || rest.len) {
 140                     mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 141                             "The loop option must be an integer: \"%.*s\"\n",
 142                             BSTR_P(param));
 143                     goto print_err;
 144                 } else {
 145                     play_tree_t *pt = last_entry ? last_entry : last_parent;
 146                     l = l <= 0 ? -1 : l;
 147                     pt->loop = l;
 148                     i += old_syntax;
 149                 }
 150             } else if (bstrcasecmp0(opt, "shuffle") == 0) {
 151                 if (last_entry && last_entry->child)
 152                     last_entry->flags |= PLAY_TREE_RND;
 153                 else
 154                     last_parent->flags |= PLAY_TREE_RND;
 155             } else if (bstrcasecmp0(opt, "noshuffle") == 0 ||
 156                        bstrcasecmp0(opt, "no-shuffle") == 0) {
 157                 if (last_entry && last_entry->child)
 158                     last_entry->flags &= ~PLAY_TREE_RND;
 159                 else
 160                     last_parent->flags &= ~PLAY_TREE_RND;
 161             } else if (bstrcasecmp0(opt, "playlist") == 0) {
 162                 if (param.len <= 0)
 163                     goto print_err;
 164                 struct play_tree *entry = parse_playlist_file(config, param);
 165                 if (!entry)
 166                     goto print_err;
 167                 add_entry(&last_parent, &last_entry, entry);
 168                 if ((last_parent->flags & PLAY_TREE_RND) && entry->child)
 169                     entry->flags |= PLAY_TREE_RND;
 170                 mode = LOCAL;
 171                 i += old_syntax;
 172             } else {
 173                 // "normal" options
 174                 const struct m_option *mp_opt;
 175                 mp_opt = m_config_get_option(config, opt);
 176                 if (!mp_opt) {
 177                     mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 178                             "Unknown option on the command line: --%.*s\n",
 179                             BSTR_P(opt));
 180                     goto print_err;
 181                 }
 182                 int r;
 183                 if (mode == GLOBAL || (mp_opt->flags & M_OPT_GLOBAL)) {
 184                     r = m_config_set_option(config, opt, param, old_syntax);
 185                 } else {
 186                     r = m_config_check_option(config, opt, param, old_syntax);
 187                     if (r >= 0) {
 188                         play_tree_t *pt = last_entry ? last_entry : last_parent;
 189                         if (r == 0)
 190                             param = bstr(NULL);  // for old_syntax case
 191                         play_tree_set_param(pt, opt, param);
 192                     }
 193                 }
 194                 if (r <= M_OPT_EXIT) {
 195                     opt_exit = true;
 196                     r = M_OPT_EXIT - r;
 197                 } else if (r < 0) {
 198                     char *msg = m_option_strerror(r);
 199                     if (!msg)
 200                         goto print_err;
 201                     mp_tmsg(MSGT_CFGPARSER, MSGL_FATAL,
 202                             "Error parsing commandline option \"%.*s\": %s\n",
 203                             BSTR_P(orig_opt), msg);
 204                     goto err_out;
 205                 }
 206                 if (old_syntax)
 207                     i += r;
 208             }
 209         } else {  /* filename */
 210             int is_dvdnav = strstr(argv[i], "dvdnav://") != NULL;
 211             play_tree_t *entry = play_tree_new();
 212             mp_msg(MSGT_CFGPARSER, MSGL_DBG2, "Adding file %s\n", argv[i]);
 213             // expand DVD filename entries like dvd://1-3 into component titles
 214             if (strstr(argv[i], "dvd://") != NULL || is_dvdnav) {
 215                 int offset = is_dvdnav ? 9 : 6;
 216                 char *splitpos = strstr(argv[i] + offset, "-");
 217                 if (splitpos != NULL) {
 218                     int start_title = strtol(argv[i] + offset, NULL, 10);
 219                     int end_title;
 220                     //entries like dvd://-2 imply start at title 1
 221                     if (start_title < 0) {
 222                         end_title = abs(start_title);
 223                         start_title = 1;
 224                     } else
 225                         end_title = strtol(splitpos + 1, NULL, 10);
 226
 227                     if (dvd_range(start_title) && dvd_range(end_title)
 228                             && (start_title < end_title)) {
 229                         for (int j = start_title; j <= end_title; j++) {
 230                             if (j != start_title)
 231                                 entry = play_tree_new();
 232                             char entbuf[15];
 233                             snprintf(entbuf, sizeof(entbuf),
 234                                     is_dvdnav ? "dvdnav://%d" : "dvd://%d", j);
 235                             play_tree_add_file(entry, entbuf);
 236                             add_entry(&last_parent, &last_entry, entry);
 237                             last_entry = entry;
 238                         }
 239                     } else
 240                         mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 241                                 "Invalid play entry %s\n", argv[i]);
 242
 243                 } else // dvd:// or dvd://x entry
 244                     play_tree_add_file(entry, argv[i]);
 245             } else
 246                 play_tree_add_file(entry, argv[i]);
 247
 248             // Lock stdin if it will be used as input
 249             if (strcasecmp(argv[i], "-") == 0)
 250                 m_config_set_option0(config, "consolecontrols", "no", false);
 251             add_entry(&last_parent, &last_entry, entry);
 252             mode = LOCAL; // We start entry specific options
 253         }
 254     }
 255
 256     if (opt_exit)
 257         goto err_out;
 258     if (last_parent != root)
 259         mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Missing }- ?\n");
 260     return root;
 261
 262 print_err:
 263     mp_tmsg(MSGT_CFGPARSER, MSGL_FATAL,
 264             "Error parsing option on the command line: %.*s\n",
 265             BSTR_P(orig_opt));
 266 err_out:
 267     play_tree_free(root, 1);
 268     return NULL;
 269 }
 270
 271 extern int mp_msg_levels[];
 272
 273 /* Parse some command line options early before main parsing.
 274  * --noconfig prevents reading configuration files (otherwise done before
 275  * command line parsing), and --really-quiet suppresses messages printed
 276  * during normal options parsing.
 277  */
 278 int m_config_preparse_command_line(m_config_t *config, int argc, char **argv)
 279 {
 280     int ret = 0;
 281
 282     // Hack to shut up parser error messages
 283     int msg_lvl_backup = mp_msg_levels[MSGT_CFGPARSER];
 284     mp_msg_levels[MSGT_CFGPARSER] = -11;
 285
 286     config->mode = M_COMMAND_LINE_PRE_PARSE;
 287
 288     for (int i = 1 ; i < argc ; i++) {
 289         struct bstr opt = bstr(argv[i]);
 290         // No more options after --
 291         if (!bstrcmp0(opt, "--"))
 292             break;
 293         struct bstr param = bstr(i+1 < argc ? argv[i+1] : NULL);
 294         bool old_syntax;
 295         if (!split_opt(&opt, &param, &old_syntax))
 296             continue;   // Ignore non-option arguments
 297         // Ignore invalid options
 298         if (!m_config_get_option(config, opt))
 299             continue;
 300         // Set, non-pre-parse options will be ignored
 301         int r = m_config_set_option(config, opt, param, old_syntax);
 302         if (r < 0)
 303             ret = r;
 304         else if (old_syntax)
 305             i += r;
 306     }
 307
 308     mp_msg_levels[MSGT_CFGPARSER] = msg_lvl_backup;
 309
 310     return ret;
 311 }