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 static int map_to_option(struct m_config *config, bool old_syntax,
  72                          const struct m_option **mp_opt,
  73                          struct bstr *optname, struct bstr *param)
  74 {
  75     if (!mp_opt)
  76         mp_opt = &(const struct m_option *){0};
  77     *mp_opt = m_config_get_option(config, *optname);
  78     if (*mp_opt)
  79         return 0;
  80     if (!bstr_startswith0(*optname, "no-"))
  81         return -1;
  82     struct bstr s = bstr_cut(*optname, 3);
  83     *mp_opt = m_config_get_option(config, s);
  84     if (!*mp_opt || (*mp_opt)->type != &m_option_type_flag)
  85         return -1;
  86     if (param->len)
  87         return -2;
  88     if (old_syntax)
  89         return -3;
  90     *optname = s;
  91     *param = bstr("no");
  92     return 0;
  93 }
  94
  95 // Parse command line to set up config and playtree
  96 play_tree_t *m_config_parse_mp_command_line(m_config_t *config, int argc,
  97                                             char **argv)
  98 {
  99     int mode = 0;
 100     bool no_more_opts = false;
 101     bool opt_exit = false;   // exit immediately after parsing (help options)
 102     play_tree_t *last_parent, *last_entry = NULL, *root;
 103     struct bstr orig_opt;
 104
 105     assert(config != NULL);
 106     assert(argv != NULL);
 107     assert(argc >= 1);
 108
 109     config->mode = M_COMMAND_LINE;
 110     mode = GLOBAL;
 111 #ifdef CONFIG_MACOSX_FINDER
 112     root = macosx_finder_args(config, argc, argv);
 113     if (root)
 114         return root;
 115 #endif
 116
 117     last_parent = root = play_tree_new();
 118
 119     for (int i = 1; i < argc; i++) {
 120         //next:
 121         struct bstr opt = bstr(argv[i]);
 122         orig_opt = opt;
 123         /* check for -- (no more options id.) except --help! */
 124         if (!bstrcmp0(opt, "--")) {
 125             no_more_opts = true;
 126             continue;
 127         }
 128         if (!bstrcmp0(opt, "{")) {
 129             play_tree_t *entry = play_tree_new();
 130             mode = LOCAL;
 131             if (last_parent->flags & PLAY_TREE_RND)
 132                 entry->flags |= PLAY_TREE_RND;
 133             if (last_entry == NULL)
 134                 play_tree_set_child(last_parent, entry);
 135             else {
 136                 play_tree_append_entry(last_entry, entry);
 137                 last_entry = NULL;
 138             }
 139             last_parent = entry;
 140             continue;
 141         }
 142
 143         if (!bstrcmp0(opt, "}")) {
 144             if (!last_parent || !last_parent->parent) {
 145                 mp_msg(MSGT_CFGPARSER, MSGL_ERR, "too much }-\n");
 146                 goto err_out;
 147             }
 148             last_entry = last_parent;
 149             last_parent = last_entry->parent;
 150             continue;
 151         }
 152
 153         struct bstr param = bstr(i+1 < argc ? argv[i+1] : NULL);
 154         bool old_syntax;
 155         if (!no_more_opts && split_opt(&opt, &param, &old_syntax)) {
 156             // Handle some special arguments outside option parser.
 157             // --loop when it applies to a group of files (per-file is option)
 158             if (bstrcasecmp0(opt, "loop") == 0 &&
 159                 (!last_entry || last_entry->child)) {
 160                 struct bstr rest;
 161                 int l = bstrtoll(param, &rest, 0);
 162                 if (!param.len || rest.len) {
 163                     mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 164                             "The loop option must be an integer: \"%.*s\"\n",
 165                             BSTR_P(param));
 166                     goto print_err;
 167                 } else {
 168                     play_tree_t *pt = last_entry ? last_entry : last_parent;
 169                     l = l <= 0 ? -1 : l;
 170                     pt->loop = l;
 171                     i += old_syntax;
 172                 }
 173             } else if (bstrcasecmp0(opt, "shuffle") == 0) {
 174                 if (last_entry && last_entry->child)
 175                     last_entry->flags |= PLAY_TREE_RND;
 176                 else
 177                     last_parent->flags |= PLAY_TREE_RND;
 178             } else if (bstrcasecmp0(opt, "noshuffle") == 0 ||
 179                        bstrcasecmp0(opt, "no-shuffle") == 0) {
 180                 if (last_entry && last_entry->child)
 181                     last_entry->flags &= ~PLAY_TREE_RND;
 182                 else
 183                     last_parent->flags &= ~PLAY_TREE_RND;
 184             } else if (bstrcasecmp0(opt, "playlist") == 0) {
 185                 if (param.len <= 0)
 186                     goto print_err;
 187                 struct play_tree *entry = parse_playlist_file(config, param);
 188                 if (!entry)
 189                     goto print_err;
 190                 add_entry(&last_parent, &last_entry, entry);
 191                 if ((last_parent->flags & PLAY_TREE_RND) && entry->child)
 192                     entry->flags |= PLAY_TREE_RND;
 193                 mode = LOCAL;
 194                 i += old_syntax;
 195             } else {
 196                 // "normal" options
 197                 const struct m_option *mp_opt;
 198                 int ok = map_to_option(config, old_syntax, &mp_opt, &opt,
 199                                        &param);
 200                 if (ok < 0) {
 201                     if (ok == -3)
 202                         mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 203                                 "Option --%.*s can't be used with single-dash "
 204                                 "syntax\n", BSTR_P(opt));
 205                     else if (ok == -2)
 206                         mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 207                                 "A --no-* option can't take parameters: "
 208                                 "--%.*s=%.*s\n", BSTR_P(opt), BSTR_P(param));
 209                     else
 210                         mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 211                                 "Unknown option on the command line: --%.*s\n",
 212                                 BSTR_P(opt));
 213                     goto print_err;
 214                 }
 215                 int r;
 216                 if (mode == GLOBAL || (mp_opt->flags & M_OPT_GLOBAL)) {
 217                     r = m_config_set_option(config, opt, param, old_syntax);
 218                 } else {
 219                     r = m_config_check_option(config, opt, param, old_syntax);
 220                     if (r >= 0) {
 221                         play_tree_t *pt = last_entry ? last_entry : last_parent;
 222                         if (r == 0)
 223                             param = bstr(NULL);  // for old_syntax case
 224                         play_tree_set_param(pt, opt, param);
 225                     }
 226                 }
 227                 if (r <= M_OPT_EXIT) {
 228                     opt_exit = true;
 229                     r = M_OPT_EXIT - r;
 230                 } else if (r < 0) {
 231                     char *msg = m_option_strerror(r);
 232                     if (!msg)
 233                         goto print_err;
 234                     mp_tmsg(MSGT_CFGPARSER, MSGL_FATAL,
 235                             "Error parsing commandline option \"%.*s\": %s\n",
 236                             BSTR_P(orig_opt), msg);
 237                     goto err_out;
 238                 }
 239                 if (old_syntax)
 240                     i += r;
 241             }
 242         } else {  /* filename */
 243             int is_dvdnav = strstr(argv[i], "dvdnav://") != NULL;
 244             play_tree_t *entry = play_tree_new();
 245             mp_msg(MSGT_CFGPARSER, MSGL_DBG2, "Adding file %s\n", argv[i]);
 246             // expand DVD filename entries like dvd://1-3 into component titles
 247             if (strstr(argv[i], "dvd://") != NULL || is_dvdnav) {
 248                 int offset = is_dvdnav ? 9 : 6;
 249                 char *splitpos = strstr(argv[i] + offset, "-");
 250                 if (splitpos != NULL) {
 251                     int start_title = strtol(argv[i] + offset, NULL, 10);
 252                     int end_title;
 253                     //entries like dvd://-2 imply start at title 1
 254                     if (start_title < 0) {
 255                         end_title = abs(start_title);
 256                         start_title = 1;
 257                     } else
 258                         end_title = strtol(splitpos + 1, NULL, 10);
 259
 260                     if (dvd_range(start_title) && dvd_range(end_title)
 261                             && (start_title < end_title)) {
 262                         for (int j = start_title; j <= end_title; j++) {
 263                             if (j != start_title)
 264                                 entry = play_tree_new();
 265                             char entbuf[15];
 266                             snprintf(entbuf, sizeof(entbuf),
 267                                     is_dvdnav ? "dvdnav://%d" : "dvd://%d", j);
 268                             play_tree_add_file(entry, entbuf);
 269                             add_entry(&last_parent, &last_entry, entry);
 270                             last_entry = entry;
 271                         }
 272                     } else
 273                         mp_tmsg(MSGT_CFGPARSER, MSGL_ERR,
 274                                 "Invalid play entry %s\n", argv[i]);
 275
 276                 } else // dvd:// or dvd://x entry
 277                     play_tree_add_file(entry, argv[i]);
 278             } else
 279                 play_tree_add_file(entry, argv[i]);
 280
 281             // Lock stdin if it will be used as input
 282             if (strcasecmp(argv[i], "-") == 0)
 283                 m_config_set_option0(config, "consolecontrols", "no", false);
 284             add_entry(&last_parent, &last_entry, entry);
 285             mode = LOCAL; // We start entry specific options
 286         }
 287     }
 288
 289     if (opt_exit)
 290         goto err_out;
 291     if (last_parent != root)
 292         mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Missing }- ?\n");
 293     return root;
 294
 295 print_err:
 296     mp_tmsg(MSGT_CFGPARSER, MSGL_FATAL,
 297             "Error parsing option on the command line: %.*s\n",
 298             BSTR_P(orig_opt));
 299 err_out:
 300     play_tree_free(root, 1);
 301     return NULL;
 302 }
 303
 304 extern int mp_msg_levels[];
 305
 306 /* Parse some command line options early before main parsing.
 307  * --noconfig prevents reading configuration files (otherwise done before
 308  * command line parsing), and --really-quiet suppresses messages printed
 309  * during normal options parsing.
 310  */
 311 int m_config_preparse_command_line(m_config_t *config, int argc, char **argv,
 312                                    int *verbose)
 313 {
 314     int ret = 0;
 315
 316     // Hack to shut up parser error messages
 317     int msg_lvl_backup = mp_msg_levels[MSGT_CFGPARSER];
 318     mp_msg_levels[MSGT_CFGPARSER] = -11;
 319
 320     config->mode = M_COMMAND_LINE_PRE_PARSE;
 321
 322     for (int i = 1 ; i < argc ; i++) {
 323         struct bstr opt = bstr(argv[i]);
 324         // No more options after --
 325         if (!bstrcmp0(opt, "--"))
 326             break;
 327         struct bstr param = bstr(i+1 < argc ? argv[i+1] : NULL);
 328         bool old_syntax;
 329         if (!split_opt(&opt, &param, &old_syntax))
 330             continue;   // Ignore non-option arguments
 331         // Ignore invalid options
 332         if (map_to_option(config, old_syntax, NULL, &opt, &param) < 0)
 333             continue;
 334         // "-v" is handled here
 335         if (!bstrcmp0(opt, "v")) {
 336             (*verbose)++;
 337             continue;
 338         }
 339         // Set, non-pre-parse options will be ignored
 340         int r = m_config_set_option(config, opt, param, old_syntax);
 341         if (r < 0)
 342             ret = r;
 343         else if (old_syntax)
 344             i += r;
 345     }
 346
 347     mp_msg_levels[MSGT_CFGPARSER] = msg_lvl_backup;
 348
 349     return ret;
 350 }