src/getargs.c

   1 /* Parse command line arguments for Bison.
   2
   3    Copyright (C) 1984, 1986, 1989, 1992, 2000-2013 Free Software
   4    Foundation, Inc.
   5
   6    This file is part of Bison, the GNU Compiler Compiler.
   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 3 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, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include <config.h>
  22 #include "system.h"
  23 #include "output.h"
  24
  25 #include <argmatch.h>
  26 #include <c-strcase.h>
  27 #include <configmake.h>
  28 #include <error.h>
  29 #include <getopt.h>
  30 #include <progname.h>
  31
  32 #include "complain.h"
  33 #include "files.h"
  34 #include "getargs.h"
  35 #include "muscle-tab.h"
  36 #include "quote.h"
  37 #include "uniqstr.h"
  38
  39 bool defines_flag;
  40 bool graph_flag;
  41 bool xml_flag;
  42 bool no_lines_flag;
  43 bool token_table_flag;
  44 bool yacc_flag; /* for -y */
  45
  46 bool nondeterministic_parser = false;
  47 bool glr_parser = false;
  48
  49 int feature_flag = feature_caret;
  50 int report_flag = report_none;
  51 int trace_flag = trace_none;
  52
  53 static struct bison_language const valid_languages[] = {
  54   { "c", "c-skel.m4", ".c", ".h", true },
  55   { "c++", "c++-skel.m4", ".cc", ".hh", true },
  56   { "java", "java-skel.m4", ".java", ".java", false },
  57   { "", "", "", "", false }
  58 };
  59
  60 int skeleton_prio = default_prio;
  61 const char *skeleton = NULL;
  62 int language_prio = default_prio;
  63 struct bison_language const *language = &valid_languages[0];
  64 const char *include = NULL;
  65
  66 /** Decode an option's key.
  67  *
  68  *  \param option   option being decoded.
  69  *  \param keys     array of valid subarguments.
  70  *  \param values   array of corresponding (int) values.
  71  *  \param all      the all value.
  72  *  \param flags    the flags to update
  73  *  \param arg      the subarguments to decode.
  74  *                  If null, then activate all the flags.
  75  *  \param no       length of the potential "no-" prefix.
  76  *                  Can be 0 or 3. If 3, negate the action of the subargument.
  77  *  \param err      length of a potential "error=".
  78  *                  Can be 0 or 6. If 6, treat the subargument as a CATEGORY
  79  *
  80  *  If VALUE != 0 then KEY sets flags and no-KEY clears them.
  81  *  If VALUE == 0 then KEY clears all flags from \c all and no-KEY sets all
  82  *  flags from \c all.  Thus no-none = all and no-all = none.
  83  */
  84 static void
  85 flag_argmatch (const char *option,
  86                const char * const keys[], const int values[],
  87                int all, int *flags, char *arg, size_t no, size_t err)
  88 {
  89   int value = 0;
  90   if (!err || arg[no + err++] != '\0')
  91     value = XARGMATCH (option, arg + no + err, keys, values);
  92
  93   if (value)
  94     {
  95       if (no)
  96         *flags &= ~value;
  97       else
  98         {
  99           if (err)
 100             warnings_flag |= value;
 101           *flags |= value;
 102         }
 103     }
 104   else
 105     {
 106       /* With a simpler 'if (no)' version, -Werror means -Werror=all
 107          (or rather, -Werror=no-none, but that syntax is invalid).
 108          The difference is:
 109          - Werror activates all errors, but not the warnings
 110          - Werror=all activates errors, and all warnings */
 111       if (no ? !err : err)
 112         *flags |= all;
 113       else
 114         *flags &= ~all;
 115     }
 116 }
 117 /** Decode an option's set of keys.
 118  *
 119  *  \param option   option being decoded.
 120  *  \param keys     array of valid subarguments.
 121  *  \param values   array of corresponding (int) values.
 122  *  \param all      the all value.
 123  *  \param flags    the flags to update
 124  *  \param args     comma separated list of effective subarguments to decode.
 125  *                  If 0, then activate all the flags.
 126  */
 127 static void
 128 flags_argmatch (const char *option,
 129                 const char * const keys[], const int values[],
 130                 int all, int *flags, char *args)
 131 {
 132   if (args)
 133     for (args = strtok (args, ","); args; args = strtok (NULL, ","))
 134       {
 135         size_t no = STRPREFIX_LIT ("no-", args) ? 3 : 0;
 136         size_t err = STRPREFIX_LIT ("error", args + no) ? 5 : 0;
 137
 138         flag_argmatch (option, keys,
 139                        values, all, err ? &errors_flag : flags,
 140                        args, no, err);
 141       }
 142   else
 143     *flags |= all;
 144 }
 145
 146 /** Decode a set of sub arguments.
 147  *
 148  *  \param FlagName  the flag familly to update.
 149  *  \param Args      the effective sub arguments to decode.
 150  *  \param All       the "all" value.
 151  *
 152  *  \arg FlagName_args   the list of keys.
 153  *  \arg FlagName_types  the list of values.
 154  *  \arg FlagName_flag   the flag to update.
 155  */
 156 #define FLAGS_ARGMATCH(FlagName, Args, All)                             \
 157   flags_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \
 158                   All, &FlagName ## _flag, Args)
 159
 160
 161 /*----------------------.
 162 | --report's handling.  |
 163 `----------------------*/
 164
 165 static const char * const report_args[] =
 166 {
 167   /* In a series of synonyms, present the most meaningful first, so
 168      that argmatch_valid be more readable.  */
 169   "none",
 170   "state", "states",
 171   "itemset", "itemsets",
 172   "lookahead", "lookaheads", "look-ahead",
 173   "solved",
 174   "all",
 175   0
 176 };
 177
 178 static const int report_types[] =
 179 {
 180   report_none,
 181   report_states, report_states,
 182   report_states | report_itemsets, report_states | report_itemsets,
 183   report_states | report_lookahead_tokens,
 184   report_states | report_lookahead_tokens,
 185   report_states | report_lookahead_tokens,
 186   report_states | report_solved_conflicts,
 187   report_all
 188 };
 189
 190 ARGMATCH_VERIFY (report_args, report_types);
 191
 192
 193 /*---------------------.
 194 | --trace's handling.  |
 195 `---------------------*/
 196
 197 static const char * const trace_args[] =
 198 {
 199   /* In a series of synonyms, present the most meaningful first, so
 200      that argmatch_valid be more readable.  */
 201   "none       - no traces",
 202   "scan       - grammar scanner traces",
 203   "parse      - grammar parser traces",
 204   "automaton  - construction of the automaton",
 205   "bitsets    - use of bitsets",
 206   "grammar    - reading, reducing the grammar",
 207   "resource   - memory consumption (where available)",
 208   "sets       - grammar sets: firsts, nullable etc.",
 209   "muscles    - m4 definitions passed to the skeleton",
 210   "tools      - m4 invocation",
 211   "m4         - m4 traces",
 212   "skeleton   - skeleton postprocessing",
 213   "time       - time consumption",
 214   "ielr       - IELR conversion",
 215   "all        - all of the above",
 216   0
 217 };
 218
 219 static const int trace_types[] =
 220 {
 221   trace_none,
 222   trace_scan,
 223   trace_parse,
 224   trace_automaton,
 225   trace_bitsets,
 226   trace_grammar,
 227   trace_resource,
 228   trace_sets,
 229   trace_muscles,
 230   trace_tools,
 231   trace_m4,
 232   trace_skeleton,
 233   trace_time,
 234   trace_ielr,
 235   trace_all
 236 };
 237
 238 ARGMATCH_VERIFY (trace_args, trace_types);
 239
 240
 241 /*------------------------.
 242 | --warnings's handling.  |
 243 `------------------------*/
 244
 245 static const char * const warnings_args[] =
 246 {
 247   /* In a series of synonyms, present the most meaningful first, so
 248      that argmatch_valid be more readable.  */
 249   "none            - no warnings",
 250   "midrule-values  - unset or unused midrule values",
 251   "yacc            - incompatibilities with POSIX Yacc",
 252   "conflicts-sr    - S/R conflicts",
 253   "conflicts-rr    - R/R conflicts",
 254   "deprecated      - obsolete constructs",
 255   "other           - all other warnings",
 256   "all             - all of the above",
 257   "error           - warnings are errors",
 258   0
 259 };
 260
 261 static const int warnings_types[] =
 262 {
 263   Wnone,
 264   Wmidrule_values,
 265   Wyacc,
 266   Wconflicts_sr,
 267   Wconflicts_rr,
 268   Wdeprecated,
 269   Wother,
 270   Wall,
 271   Werror
 272 };
 273
 274 ARGMATCH_VERIFY (warnings_args, warnings_types);
 275
 276 /*-----------------------.
 277 | --feature's handling.  |
 278 `-----------------------*/
 279
 280 static const char * const feature_args[] =
 281 {
 282   "none",
 283   "caret", "diagnostics-show-caret",
 284   "all",
 285   0
 286 };
 287
 288 static const int feature_types[] =
 289 {
 290   feature_none,
 291   feature_caret, feature_caret,
 292   feature_all
 293 };
 294
 295 ARGMATCH_VERIFY (feature_args, feature_types);
 296
 297 /*-------------------------------------------.
 298 | Display the help message and exit STATUS.  |
 299 `-------------------------------------------*/
 300
 301 static void usage (int) ATTRIBUTE_NORETURN;
 302
 303 static void
 304 usage (int status)
 305 {
 306   if (status != 0)
 307     fprintf (stderr, _("Try `%s --help' for more information.\n"),
 308              program_name);
 309   else
 310     {
 311       /* For ../build-aux/cross-options.pl to work, use the format:
 312                 ^  -S, --long[=ARGS] (whitespace)
 313          A --long option is required.
 314          Otherwise, add exceptions to ../build-aux/cross-options.pl.  */
 315
 316       printf (_("Usage: %s [OPTION]... FILE\n"), program_name);
 317       fputs (_("\
 318 Generate a deterministic LR or generalized LR (GLR) parser employing\n\
 319 LALR(1), IELR(1), or canonical LR(1) parser tables.  IELR(1) and\n\
 320 canonical LR(1) support is experimental.\n\
 321 \n\
 322 "), stdout);
 323
 324       fputs (_("\
 325 Mandatory arguments to long options are mandatory for short options too.\n\
 326 "), stdout);
 327       fputs (_("\
 328 The same is true for optional arguments.\n\
 329 "), stdout);
 330
 331       fputs (_("\
 332 \n\
 333 Operation modes:\n\
 334   -h, --help                 display this help and exit\n\
 335   -V, --version              output version information and exit\n\
 336       --print-localedir      output directory containing locale-dependent data\n\
 337       --print-datadir        output directory containing skeletons and XSLT\n\
 338   -y, --yacc                 emulate POSIX Yacc\n\
 339   -W, --warnings[=CATEGORY]  report the warnings falling in CATEGORY\n\
 340   -f, --feature[=FEATURE]    activate miscellaneous features\n\
 341 \n\
 342 "), stdout);
 343
 344       fputs (_("\
 345 Parser:\n\
 346   -L, --language=LANGUAGE          specify the output programming language\n\
 347   -S, --skeleton=FILE              specify the skeleton to use\n\
 348   -t, --debug                      instrument the parser for tracing\n\
 349                                    same as `-Dparse.trace'\n\
 350       --locations                  enable location support\n\
 351   -D, --define=NAME[=VALUE]        similar to '%define NAME \"VALUE\"'\n\
 352   -F, --force-define=NAME[=VALUE]  override '%define NAME \"VALUE\"'\n\
 353   -p, --name-prefix=PREFIX         prepend PREFIX to the external symbols\n\
 354                                    deprecated by '-Dapi.prefix=PREFIX'\n\
 355   -l, --no-lines                   don't generate '#line' directives\n\
 356   -k, --token-table                include a table of token names\n\
 357 "), stdout);
 358       putc ('\n', stdout);
 359
 360       /* Keep -d and --defines separate so that ../build-aux/cross-options.pl
 361        * won't assume that -d also takes an argument.  */
 362       fputs (_("\
 363 Output:\n\
 364       --defines[=FILE]       also produce a header file\n\
 365   -d                         likewise but cannot specify FILE (for POSIX Yacc)\n\
 366   -r, --report=THINGS        also produce details on the automaton\n\
 367       --report-file=FILE     write report to FILE\n\
 368   -v, --verbose              same as `--report=state'\n\
 369   -b, --file-prefix=PREFIX   specify a PREFIX for output files\n\
 370   -o, --output=FILE          leave output to FILE\n\
 371   -g, --graph[=FILE]         also output a graph of the automaton\n\
 372   -x, --xml[=FILE]           also output an XML report of the automaton\n\
 373                              (the XML schema is experimental)\n\
 374 "), stdout);
 375       putc ('\n', stdout);
 376
 377       fputs (_("\
 378 Warning categories include:\n\
 379   `midrule-values'    unset or unused midrule values\n\
 380   `yacc'              incompatibilities with POSIX Yacc\n\
 381   `conflicts-sr'      S/R conflicts (enabled by default)\n\
 382   `conflicts-rr'      R/R conflicts (enabled by default)\n\
 383   `deprecated'        obsolete constructs\n\
 384   `other'             all other warnings (enabled by default)\n\
 385   `all'               all the warnings\n\
 386   `no-CATEGORY'       turn off warnings in CATEGORY\n\
 387   `none'              turn off all the warnings\n\
 388   `error[=CATEGORY]'  treat warnings as errors\n\
 389 "), stdout);
 390       putc ('\n', stdout);
 391
 392       fputs (_("\
 393 THINGS is a list of comma separated words that can include:\n\
 394   `state'        describe the states\n\
 395   `itemset'      complete the core item sets with their closure\n\
 396   `lookahead'    explicitly associate lookahead tokens to items\n\
 397   `solved'       describe shift/reduce conflicts solving\n\
 398   `all'          include all the above information\n\
 399   `none'         disable the report\n\
 400 "), stdout);
 401       putc ('\n', stdout);
 402
 403       fputs (_("\
 404 FEATURE is a list of comma separated words that can include:\n\
 405   `caret'        show errors with carets\n\
 406   `all'          all of the above\n\
 407   `none'         disable all of the above\n\
 408   "), stdout);
 409
 410       putc ('\n', stdout);
 411       printf (_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
 412       printf (_("%s home page: <%s>.\n"), PACKAGE_NAME, PACKAGE_URL);
 413       fputs (_("General help using GNU software: "
 414                "<http://www.gnu.org/gethelp/>.\n"),
 415              stdout);
 416       /* Don't output this redundant message for English locales.
 417          Note we still output for 'C' so that it gets included in the
 418          man page.  */
 419       const char *lc_messages = setlocale (LC_MESSAGES, NULL);
 420       if (lc_messages && !STREQ (lc_messages, "en_"))
 421         /* TRANSLATORS: Replace LANG_CODE in this URL with your language
 422            code <http://translationproject.org/team/LANG_CODE.html> to
 423            form one of the URLs at http://translationproject.org/team/.
 424            Otherwise, replace the entire URL with your translation team's
 425            email address.  */
 426         fputs (_("Report translation bugs to "
 427                  "<http://translationproject.org/team/>.\n"), stdout);
 428       fputs (_("For complete documentation, run: info bison.\n"), stdout);
 429     }
 430
 431   exit (status);
 432 }
 433
 434
 435 /*------------------------------.
 436 | Display the version message.  |
 437 `------------------------------*/
 438
 439 static void
 440 version (void)
 441 {
 442   /* Some efforts were made to ease the translators' task, please
 443      continue.  */
 444   printf (_("bison (GNU Bison) %s"), VERSION);
 445   putc ('\n', stdout);
 446   fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stdout);
 447   putc ('\n', stdout);
 448
 449   fprintf (stdout,
 450            _("Copyright (C) %d Free Software Foundation, Inc.\n"),
 451            PACKAGE_COPYRIGHT_YEAR);
 452
 453   fputs (_("\
 454 This is free software; see the source for copying conditions.  There is NO\n\
 455 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
 456 "),
 457          stdout);
 458 }
 459
 460
 461 /*-------------------------------------.
 462 | --skeleton and --language handling.  |
 463 `--------------------------------------*/
 464
 465 void
 466 skeleton_arg (char const *arg, int prio, location loc)
 467 {
 468   if (prio < skeleton_prio)
 469     {
 470       skeleton_prio = prio;
 471       skeleton = arg;
 472     }
 473   else if (prio == skeleton_prio)
 474     complain (&loc, complaint,
 475               _("multiple skeleton declarations are invalid"));
 476 }
 477
 478 void
 479 language_argmatch (char const *arg, int prio, location loc)
 480 {
 481   char const *msg;
 482
 483   if (prio < language_prio)
 484     {
 485       int i;
 486       for (i = 0; valid_languages[i].language[0]; i++)
 487         if (c_strcasecmp (arg, valid_languages[i].language) == 0)
 488           {
 489             language_prio = prio;
 490             language = &valid_languages[i];
 491             return;
 492           }
 493       msg = _("%s: invalid language");
 494     }
 495   else if (language_prio == prio)
 496     msg = _("multiple language declarations are invalid");
 497   else
 498     return;
 499
 500   complain (&loc, complaint, msg, quotearg_colon (arg));
 501 }
 502
 503 /*----------------------.
 504 | Process the options.  |
 505 `----------------------*/
 506
 507 /* Shorts options.
 508    Should be computed from long_options.  */
 509 static char const short_options[] =
 510   "D:"
 511   "F:"
 512   "L:"
 513   "S:"
 514   "T::"
 515   "V"
 516   "W::"
 517   "b:"
 518   "d"
 519   "f::"
 520   "e"
 521   "g::"
 522   "h"
 523   "k"
 524   "l"
 525   "n"
 526   "o:"
 527   "p:"
 528   "r:"
 529   "t"
 530   "v"
 531   "x::"
 532   "y"
 533   ;
 534
 535 /* Values for long options that do not have single-letter equivalents.  */
 536 enum
 537 {
 538   LOCATIONS_OPTION = CHAR_MAX + 1,
 539   PRINT_LOCALEDIR_OPTION,
 540   PRINT_DATADIR_OPTION,
 541   REPORT_FILE_OPTION
 542 };
 543
 544 static struct option const long_options[] =
 545 {
 546   /* Operation modes. */
 547   { "help",            no_argument,       0,   'h' },
 548   { "version",         no_argument,       0,   'V' },
 549   { "print-localedir", no_argument,       0,   PRINT_LOCALEDIR_OPTION },
 550   { "print-datadir",   no_argument,       0,   PRINT_DATADIR_OPTION   },
 551   { "warnings",        optional_argument, 0,   'W' },
 552
 553   /* Parser. */
 554   { "name-prefix",   required_argument,   0,   'p' },
 555   { "include",       required_argument,   0,   'I' },
 556
 557   /* Output. */
 558   { "file-prefix", required_argument,   0,   'b' },
 559   { "output",      required_argument,   0,   'o' },
 560   { "output-file", required_argument,   0,   'o' },
 561   { "graph",       optional_argument,   0,   'g' },
 562   { "xml",         optional_argument,   0,   'x' },
 563   { "report",      required_argument,   0,   'r' },
 564   { "report-file", required_argument,   0,   REPORT_FILE_OPTION },
 565   { "verbose",     no_argument,         0,   'v' },
 566
 567   /* Hidden. */
 568   { "trace",         optional_argument,   0,     'T' },
 569
 570   /* Output.  */
 571   { "defines",     optional_argument,   0,   'd' },
 572   { "feature",     optional_argument,   0,   'f' },
 573
 574   /* Operation modes.  */
 575   { "fixed-output-files", no_argument,  0,   'y' },
 576   { "yacc",               no_argument,  0,   'y' },
 577
 578   /* Parser.  */
 579   { "debug",          no_argument,               0,   't' },
 580   { "define",         required_argument,         0,   'D' },
 581   { "force-define",   required_argument,         0,   'F' },
 582   { "locations",      no_argument,               0, LOCATIONS_OPTION },
 583   { "no-lines",       no_argument,               0,   'l' },
 584   { "raw",            no_argument,               0,     0 },
 585   { "skeleton",       required_argument,         0,   'S' },
 586   { "language",       required_argument,         0,   'L' },
 587   { "token-table",    no_argument,               0,   'k' },
 588
 589   {0, 0, 0, 0}
 590 };
 591
 592 /* Under DOS, there is no difference on the case.  This can be
 593    troublesome when looking for `.tab' etc.  */
 594 #ifdef MSDOS
 595 # define AS_FILE_NAME(File) (strlwr (File), (File))
 596 #else
 597 # define AS_FILE_NAME(File) (File)
 598 #endif
 599
 600 /* Build a location for the current command line argument. */
 601 static
 602 location
 603 command_line_location (void)
 604 {
 605   location res;
 606   /* "<command line>" is used in GCC's messages about -D. */
 607   boundary_set (&res.start, uniqstr_new ("<command line>"), optind - 1, -1);
 608   res.end = res.start;
 609   return res;
 610 }
 611
 612
 613 void
 614 getargs (int argc, char *argv[])
 615 {
 616   int c;
 617
 618   while ((c = getopt_long (argc, argv, short_options, long_options, NULL))
 619          != -1)
 620     switch (c)
 621       {
 622         /* ASCII Sorting for short options (i.e., upper case then
 623            lower case), and then long-only options.  */
 624
 625       case 0:
 626         /* Certain long options cause getopt_long to return 0.  */
 627         break;
 628
 629       case 'D': /* -DNAME[=VALUE]. */
 630       case 'F': /* -FNAME[=VALUE]. */
 631         {
 632           char* name = optarg;
 633           char* value = strchr (optarg, '=');
 634           if (value)
 635             *value++ = 0;
 636           muscle_percent_define_insert (name, command_line_location (),
 637                                         value ? value : "",
 638                                         c == 'D' ? MUSCLE_PERCENT_DEFINE_D
 639                                                  : MUSCLE_PERCENT_DEFINE_F);
 640         }
 641         break;
 642
 643       case 'I':
 644         include = AS_FILE_NAME (optarg);
 645         break;
 646
 647       case 'L':
 648         language_argmatch (optarg, command_line_prio,
 649                            command_line_location ());
 650         break;
 651
 652       case 'S':
 653         skeleton_arg (AS_FILE_NAME (optarg), command_line_prio,
 654                       command_line_location ());
 655         break;
 656
 657       case 'T':
 658         FLAGS_ARGMATCH (trace, optarg, trace_all);
 659         break;
 660
 661       case 'V':
 662         version ();
 663         exit (EXIT_SUCCESS);
 664
 665       case 'f':
 666         FLAGS_ARGMATCH (feature, optarg, feature_all);
 667         break;
 668
 669       case 'W':
 670         FLAGS_ARGMATCH (warnings, optarg, Wall);
 671         break;
 672
 673       case 'b':
 674         spec_file_prefix = AS_FILE_NAME (optarg);
 675         break;
 676
 677       case 'd':
 678         /* Here, the -d and --defines options are differentiated.  */
 679         defines_flag = true;
 680         if (optarg)
 681           {
 682             free (spec_defines_file);
 683             spec_defines_file = xstrdup (AS_FILE_NAME (optarg));
 684           }
 685         break;
 686
 687       case 'g':
 688         graph_flag = true;
 689         if (optarg)
 690           {
 691             free (spec_graph_file);
 692             spec_graph_file = xstrdup (AS_FILE_NAME (optarg));
 693           }
 694         break;
 695
 696       case 'h':
 697         usage (EXIT_SUCCESS);
 698
 699       case 'k':
 700         token_table_flag = true;
 701         break;
 702
 703       case 'l':
 704         no_lines_flag = true;
 705         break;
 706
 707       case 'o':
 708         spec_outfile = AS_FILE_NAME (optarg);
 709         break;
 710
 711       case 'p':
 712         spec_name_prefix = optarg;
 713         break;
 714
 715       case 'r':
 716         FLAGS_ARGMATCH (report, optarg, report_all);
 717         break;
 718
 719       case 't':
 720         muscle_percent_define_insert ("parse.trace",
 721                                       command_line_location (), "",
 722                                       MUSCLE_PERCENT_DEFINE_D);
 723         break;
 724
 725       case 'v':
 726         report_flag |= report_states;
 727         break;
 728
 729       case 'x':
 730         xml_flag = true;
 731         if (optarg)
 732           {
 733             free (spec_xml_file);
 734             spec_xml_file = xstrdup (AS_FILE_NAME (optarg));
 735           }
 736         break;
 737
 738       case 'y':
 739         warnings_flag |= Wyacc;
 740         errors_flag |= Wyacc;
 741         yacc_flag = true;
 742         break;
 743
 744       case LOCATIONS_OPTION:
 745         muscle_percent_define_ensure ("locations",
 746                                       command_line_location (), true);
 747         break;
 748
 749       case PRINT_LOCALEDIR_OPTION:
 750         printf ("%s\n", LOCALEDIR);
 751         exit (EXIT_SUCCESS);
 752
 753       case PRINT_DATADIR_OPTION:
 754         printf ("%s\n", pkgdatadir ());
 755         exit (EXIT_SUCCESS);
 756
 757       case REPORT_FILE_OPTION:
 758         free (spec_verbose_file);
 759         spec_verbose_file = xstrdup (AS_FILE_NAME (optarg));
 760         break;
 761
 762       default:
 763         usage (EXIT_FAILURE);
 764       }
 765
 766   if (argc - optind != 1)
 767     {
 768       if (argc - optind < 1)
 769         error (0, 0, _("%s: missing operand"), quotearg_colon (argv[argc - 1]));
 770       else
 771         error (0, 0, _("extra operand %s"), quote (argv[optind + 1]));
 772       usage (EXIT_FAILURE);
 773     }
 774
 775   current_file = grammar_file = uniqstr_new (argv[optind]);
 776   MUSCLE_INSERT_C_STRING ("file_name", grammar_file);
 777 }
 778
 779 void
 780 tr (char *s, char from, char to)
 781 {
 782   for (; *s; s++)
 783     if (*s == from)
 784       *s = to;
 785 }