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  *
  78  *  If VALUE != 0 then KEY sets flags and no-KEY clears them.
  79  *  If VALUE == 0 then KEY clears all flags from \c all and no-KEY sets all
  80  *  flags from \c all.  Thus no-none = all and no-all = none.
  81  */
  82 static void
  83 flag_argmatch (const char *option,
  84                const char * const keys[], const int values[],
  85                int all, int *flags, char *arg, size_t no)
  86 {
  87   int value = 0;
  88   value = XARGMATCH (option, arg + no, keys, values);
  89
  90   if (value)
  91     {
  92       if (no)
  93         *flags &= ~value;
  94       else
  95         *flags |= value;
  96     }
  97   else
  98     {
  99       if (no)
 100         *flags |= all;
 101       else
 102         *flags &= ~all;
 103     }
 104 }
 105
 106 /** Decode an option's set of keys.
 107  *
 108  *  \param option   option being decoded.
 109  *  \param keys     array of valid subarguments.
 110  *  \param values   array of corresponding (int) values.
 111  *  \param all      the all value.
 112  *  \param flags    the flags to update
 113  *  \param args     comma separated list of effective subarguments to decode.
 114  *                  If 0, then activate all the flags.
 115  */
 116 static void
 117 flags_argmatch (const char *option,
 118                 const char * const keys[], const int values[],
 119                 int all, int *flags, char *args)
 120 {
 121   if (args)
 122     for (args = strtok (args, ","); args; args = strtok (NULL, ","))
 123       {
 124         size_t no = STRPREFIX_LIT ("no-", args) ? 3 : 0;
 125         flag_argmatch (option, keys,
 126                        values, all, flags, args, no);
 127       }
 128   else
 129     *flags |= all;
 130 }
 131
 132
 133 /** Decode a set of sub arguments.
 134  *
 135  *  \param FlagName  the flag familly to update.
 136  *  \param Args      the effective sub arguments to decode.
 137  *  \param All       the "all" value.
 138  *
 139  *  \arg FlagName_args   the list of keys.
 140  *  \arg FlagName_types  the list of values.
 141  *  \arg FlagName_flag   the flag to update.
 142  */
 143 #define FLAGS_ARGMATCH(FlagName, Args, All)                             \
 144   flags_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \
 145                   All, &FlagName ## _flag, Args)
 146
 147
 148 /*----------------------.
 149 | --report's handling.  |
 150 `----------------------*/
 151
 152 static const char * const report_args[] =
 153 {
 154   /* In a series of synonyms, present the most meaningful first, so
 155      that argmatch_valid be more readable.  */
 156   "none",
 157   "state", "states",
 158   "itemset", "itemsets",
 159   "lookahead", "lookaheads", "look-ahead",
 160   "solved",
 161   "all",
 162   0
 163 };
 164
 165 static const int report_types[] =
 166 {
 167   report_none,
 168   report_states, report_states,
 169   report_states | report_itemsets, report_states | report_itemsets,
 170   report_states | report_lookahead_tokens,
 171   report_states | report_lookahead_tokens,
 172   report_states | report_lookahead_tokens,
 173   report_states | report_solved_conflicts,
 174   report_all
 175 };
 176
 177 ARGMATCH_VERIFY (report_args, report_types);
 178
 179
 180 /*---------------------.
 181 | --trace's handling.  |
 182 `---------------------*/
 183
 184 static const char * const trace_args[] =
 185 {
 186   "none       - no traces",
 187   "scan       - grammar scanner traces",
 188   "parse      - grammar parser traces",
 189   "automaton  - construction of the automaton",
 190   "bitsets    - use of bitsets",
 191   "grammar    - reading, reducing the grammar",
 192   "resource   - memory consumption (where available)",
 193   "sets       - grammar sets: firsts, nullable etc.",
 194   "muscles    - m4 definitions passed to the skeleton",
 195   "tools      - m4 invocation",
 196   "m4         - m4 traces",
 197   "skeleton   - skeleton postprocessing",
 198   "time       - time consumption",
 199   "ielr       - IELR conversion",
 200   "all        - all of the above",
 201   0
 202 };
 203
 204 static const int trace_types[] =
 205 {
 206   trace_none,
 207   trace_scan,
 208   trace_parse,
 209   trace_automaton,
 210   trace_bitsets,
 211   trace_grammar,
 212   trace_resource,
 213   trace_sets,
 214   trace_muscles,
 215   trace_tools,
 216   trace_m4,
 217   trace_skeleton,
 218   trace_time,
 219   trace_ielr,
 220   trace_all
 221 };
 222
 223 ARGMATCH_VERIFY (trace_args, trace_types);
 224
 225
 226 /*------------------------.
 227 | --warnings's handling.  |
 228 `------------------------*/
 229
 230 /** Decode a single argument from -W.
 231  *
 232  *  \param option   option being decoded.
 233  *  \param keys     array of valid subarguments.
 234  *  \param values   array of corresponding (int) values.
 235  *  \param all      the all value.
 236  *  \param flags    the flags to update
 237  *  \param arg      the subarguments to decode.
 238  *                  If null, then activate all the flags.
 239  *  \param no       length of the potential "no-" prefix.
 240  *                  Can be 0 or 3. If 3, negate the action of the subargument.
 241  *  \param err      length of a potential "error=".
 242  *                  Can be 0 or 6. If 6, treat the subargument as a CATEGORY
 243  *
 244  *  If VALUE != 0 then KEY sets flags and no-KEY clears them.
 245  *  If VALUE == 0 then KEY clears all flags from \c all and no-KEY sets all
 246  *  flags from \c all.  Thus no-none = all and no-all = none.
 247  */
 248 static void
 249 warning_argmatch (const char *option,
 250                   const char * const keys[], const int values[],
 251                   int all, int *flags, char *arg, size_t no, size_t err)
 252 {
 253   int value = 0;
 254   if (!err || arg[no + err++] != '\0')
 255     value = XARGMATCH (option, arg + no + err, keys, values);
 256
 257   if (value)
 258     {
 259       if (no)
 260         *flags &= ~value;
 261       else
 262         {
 263           if (err)
 264             warnings_flag |= value;
 265           *flags |= value;
 266         }
 267     }
 268   else
 269     {
 270       /* With a simpler 'if (no)' version, -Werror means -Werror=all
 271          (or rather, -Werror=no-none, but that syntax is invalid).
 272          The difference is:
 273          - Werror activates all errors, but not the warnings
 274          - Werror=all activates errors, and all warnings */
 275       if (no ? !err : err)
 276         *flags |= all;
 277       else
 278         *flags &= ~all;
 279     }
 280 }
 281
 282 /** Decode a comma-separated list of arguments from -W.
 283  *
 284  *  \param option   option being decoded.
 285  *  \param keys     array of valid subarguments.
 286  *  \param values   array of corresponding (int) values.
 287  *  \param all      the all value.
 288  *  \param flags    the flags to update
 289  *  \param args     comma separated list of effective subarguments to decode.
 290  *                  If 0, then activate all the flags.
 291  */
 292 static void
 293 warnings_argmatch (const char *option,
 294                    const char * const keys[], const int values[],
 295                    int all, int *flags, char *args)
 296 {
 297   if (args)
 298     for (args = strtok (args, ","); args; args = strtok (NULL, ","))
 299       {
 300         size_t no = STRPREFIX_LIT ("no-", args) ? 3 : 0;
 301         size_t err = STRPREFIX_LIT ("error", args + no) ? 5 : 0;
 302
 303         warning_argmatch (option, keys,
 304                           values, all, err ? &errors_flag : flags,
 305                           args, no, err);
 306       }
 307   else
 308     *flags |= all;
 309 }
 310
 311 /** Decode a set of sub arguments.
 312  *
 313  *  \param FlagName  the flag familly to update.
 314  *  \param Args      the effective sub arguments to decode.
 315  *  \param All       the "all" value.
 316  *
 317  *  \arg FlagName_args   the list of keys.
 318  *  \arg FlagName_types  the list of values.
 319  *  \arg FlagName_flag   the flag to update.
 320  */
 321 #define WARNINGS_ARGMATCH(FlagName, Args, All)                          \
 322   warnings_argmatch ("--" #FlagName, FlagName ## _args, FlagName ## _types, \
 323                      All, &FlagName ## _flag, Args)
 324
 325 const char * const warnings_args[] =
 326 {
 327   "none",
 328   "midrule-values",
 329   "yacc",
 330   "conflicts-sr",
 331   "conflicts-rr",
 332   "deprecated",
 333   "precedence",
 334   "other",
 335   "all",
 336   "error",
 337   0
 338 };
 339
 340 const int warnings_types[] =
 341 {
 342   Wnone,
 343   Wmidrule_values,
 344   Wyacc,
 345   Wconflicts_sr,
 346   Wconflicts_rr,
 347   Wdeprecated,
 348   Wprecedence,
 349   Wother,
 350   Wall,
 351   Werror
 352 };
 353
 354 ARGMATCH_VERIFY (warnings_args, warnings_types);
 355
 356 /*-----------------------.
 357 | --feature's handling.  |
 358 `-----------------------*/
 359
 360 static const char * const feature_args[] =
 361 {
 362   "none",
 363   "caret", "diagnostics-show-caret",
 364   "all",
 365   0
 366 };
 367
 368 static const int feature_types[] =
 369 {
 370   feature_none,
 371   feature_caret, feature_caret,
 372   feature_all
 373 };
 374
 375 ARGMATCH_VERIFY (feature_args, feature_types);
 376
 377 /*-------------------------------------------.
 378 | Display the help message and exit STATUS.  |
 379 `-------------------------------------------*/
 380
 381 static void usage (int) ATTRIBUTE_NORETURN;
 382
 383 static void
 384 usage (int status)
 385 {
 386   if (status != 0)
 387     fprintf (stderr, _("Try `%s --help' for more information.\n"),
 388              program_name);
 389   else
 390     {
 391       /* For ../build-aux/cross-options.pl to work, use the format:
 392                 ^  -S, --long[=ARGS] (whitespace)
 393          A --long option is required.
 394          Otherwise, add exceptions to ../build-aux/cross-options.pl.  */
 395
 396       printf (_("Usage: %s [OPTION]... FILE\n"), program_name);
 397       fputs (_("\
 398 Generate a deterministic LR or generalized LR (GLR) parser employing\n\
 399 LALR(1), IELR(1), or canonical LR(1) parser tables.  IELR(1) and\n\
 400 canonical LR(1) support is experimental.\n\
 401 \n\
 402 "), stdout);
 403
 404       fputs (_("\
 405 Mandatory arguments to long options are mandatory for short options too.\n\
 406 "), stdout);
 407       fputs (_("\
 408 The same is true for optional arguments.\n\
 409 "), stdout);
 410
 411       fputs (_("\
 412 \n\
 413 Operation modes:\n\
 414   -h, --help                 display this help and exit\n\
 415   -V, --version              output version information and exit\n\
 416       --print-localedir      output directory containing locale-dependent data\n\
 417       --print-datadir        output directory containing skeletons and XSLT\n\
 418   -y, --yacc                 emulate POSIX Yacc\n\
 419   -W, --warnings[=CATEGORY]  report the warnings falling in CATEGORY\n\
 420   -f, --feature[=FEATURE]    activate miscellaneous features\n\
 421 \n\
 422 "), stdout);
 423
 424       fputs (_("\
 425 Parser:\n\
 426   -L, --language=LANGUAGE          specify the output programming language\n\
 427   -S, --skeleton=FILE              specify the skeleton to use\n\
 428   -t, --debug                      instrument the parser for tracing\n\
 429                                    same as `-Dparse.trace'\n\
 430       --locations                  enable location support\n\
 431   -D, --define=NAME[=VALUE]        similar to '%define NAME \"VALUE\"'\n\
 432   -F, --force-define=NAME[=VALUE]  override '%define NAME \"VALUE\"'\n\
 433   -p, --name-prefix=PREFIX         prepend PREFIX to the external symbols\n\
 434                                    deprecated by '-Dapi.prefix=PREFIX'\n\
 435   -l, --no-lines                   don't generate '#line' directives\n\
 436   -k, --token-table                include a table of token names\n\
 437 "), stdout);
 438       putc ('\n', stdout);
 439
 440       /* Keep -d and --defines separate so that ../build-aux/cross-options.pl
 441        * won't assume that -d also takes an argument.  */
 442       fputs (_("\
 443 Output:\n\
 444       --defines[=FILE]       also produce a header file\n\
 445   -d                         likewise but cannot specify FILE (for POSIX Yacc)\n\
 446   -r, --report=THINGS        also produce details on the automaton\n\
 447       --report-file=FILE     write report to FILE\n\
 448   -v, --verbose              same as `--report=state'\n\
 449   -b, --file-prefix=PREFIX   specify a PREFIX for output files\n\
 450   -o, --output=FILE          leave output to FILE\n\
 451   -g, --graph[=FILE]         also output a graph of the automaton\n\
 452   -x, --xml[=FILE]           also output an XML report of the automaton\n\
 453                              (the XML schema is experimental)\n\
 454 "), stdout);
 455       putc ('\n', stdout);
 456
 457       fputs (_("\
 458 Warning categories include:\n\
 459   `midrule-values'    unset or unused midrule values\n\
 460   `yacc'              incompatibilities with POSIX Yacc\n\
 461   `conflicts-sr'      S/R conflicts (enabled by default)\n\
 462   `conflicts-rr'      R/R conflicts (enabled by default)\n\
 463   `deprecated'        obsolete constructs\n\
 464   `precedence'        useless precedence and associativity\n\
 465   `other'             all other warnings (enabled by default)\n\
 466   `all'               all the warnings\n\
 467   `no-CATEGORY'       turn off warnings in CATEGORY\n\
 468   `none'              turn off all the warnings\n\
 469   `error[=CATEGORY]'  treat warnings as errors\n\
 470 "), stdout);
 471       putc ('\n', stdout);
 472
 473       fputs (_("\
 474 THINGS is a list of comma separated words that can include:\n\
 475   `state'        describe the states\n\
 476   `itemset'      complete the core item sets with their closure\n\
 477   `lookahead'    explicitly associate lookahead tokens to items\n\
 478   `solved'       describe shift/reduce conflicts solving\n\
 479   `all'          include all the above information\n\
 480   `none'         disable the report\n\
 481 "), stdout);
 482       putc ('\n', stdout);
 483
 484       fputs (_("\
 485 FEATURE is a list of comma separated words that can include:\n\
 486   `caret'        show errors with carets\n\
 487   `all'          all of the above\n\
 488   `none'         disable all of the above\n\
 489   "), stdout);
 490
 491       putc ('\n', stdout);
 492       printf (_("Report bugs to <%s>.\n"), PACKAGE_BUGREPORT);
 493       printf (_("%s home page: <%s>.\n"), PACKAGE_NAME, PACKAGE_URL);
 494       fputs (_("General help using GNU software: "
 495                "<http://www.gnu.org/gethelp/>.\n"),
 496              stdout);
 497       /* Don't output this redundant message for English locales.
 498          Note we still output for 'C' so that it gets included in the
 499          man page.  */
 500       const char *lc_messages = setlocale (LC_MESSAGES, NULL);
 501       if (lc_messages && !STREQ (lc_messages, "en_"))
 502         /* TRANSLATORS: Replace LANG_CODE in this URL with your language
 503            code <http://translationproject.org/team/LANG_CODE.html> to
 504            form one of the URLs at http://translationproject.org/team/.
 505            Otherwise, replace the entire URL with your translation team's
 506            email address.  */
 507         fputs (_("Report translation bugs to "
 508                  "<http://translationproject.org/team/>.\n"), stdout);
 509       fputs (_("For complete documentation, run: info bison.\n"), stdout);
 510     }
 511
 512   exit (status);
 513 }
 514
 515
 516 /*------------------------------.
 517 | Display the version message.  |
 518 `------------------------------*/
 519
 520 static void
 521 version (void)
 522 {
 523   /* Some efforts were made to ease the translators' task, please
 524      continue.  */
 525   printf (_("bison (GNU Bison) %s"), VERSION);
 526   putc ('\n', stdout);
 527   fputs (_("Written by Robert Corbett and Richard Stallman.\n"), stdout);
 528   putc ('\n', stdout);
 529
 530   fprintf (stdout,
 531            _("Copyright (C) %d Free Software Foundation, Inc.\n"),
 532            PACKAGE_COPYRIGHT_YEAR);
 533
 534   fputs (_("\
 535 This is free software; see the source for copying conditions.  There is NO\n\
 536 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
 537 "),
 538          stdout);
 539 }
 540
 541
 542 /*-------------------------------------.
 543 | --skeleton and --language handling.  |
 544 `--------------------------------------*/
 545
 546 void
 547 skeleton_arg (char const *arg, int prio, location loc)
 548 {
 549   if (prio < skeleton_prio)
 550     {
 551       skeleton_prio = prio;
 552       skeleton = arg;
 553     }
 554   else if (prio == skeleton_prio)
 555     complain (&loc, complaint,
 556               _("multiple skeleton declarations are invalid"));
 557 }
 558
 559 void
 560 language_argmatch (char const *arg, int prio, location loc)
 561 {
 562   char const *msg;
 563
 564   if (prio < language_prio)
 565     {
 566       int i;
 567       for (i = 0; valid_languages[i].language[0]; i++)
 568         if (c_strcasecmp (arg, valid_languages[i].language) == 0)
 569           {
 570             language_prio = prio;
 571             language = &valid_languages[i];
 572             return;
 573           }
 574       msg = _("%s: invalid language");
 575     }
 576   else if (language_prio == prio)
 577     msg = _("multiple language declarations are invalid");
 578   else
 579     return;
 580
 581   complain (&loc, complaint, msg, quotearg_colon (arg));
 582 }
 583
 584 /*----------------------.
 585 | Process the options.  |
 586 `----------------------*/
 587
 588 /* Shorts options.
 589    Should be computed from long_options.  */
 590 static char const short_options[] =
 591   "D:"
 592   "F:"
 593   "L:"
 594   "S:"
 595   "T::"
 596   "V"
 597   "W::"
 598   "b:"
 599   "d"
 600   "f::"
 601   "e"
 602   "g::"
 603   "h"
 604   "k"
 605   "l"
 606   "n"
 607   "o:"
 608   "p:"
 609   "r:"
 610   "t"
 611   "v"
 612   "x::"
 613   "y"
 614   ;
 615
 616 /* Values for long options that do not have single-letter equivalents.  */
 617 enum
 618 {
 619   LOCATIONS_OPTION = CHAR_MAX + 1,
 620   PRINT_LOCALEDIR_OPTION,
 621   PRINT_DATADIR_OPTION,
 622   REPORT_FILE_OPTION
 623 };
 624
 625 static struct option const long_options[] =
 626 {
 627   /* Operation modes. */
 628   { "help",            no_argument,       0,   'h' },
 629   { "version",         no_argument,       0,   'V' },
 630   { "print-localedir", no_argument,       0,   PRINT_LOCALEDIR_OPTION },
 631   { "print-datadir",   no_argument,       0,   PRINT_DATADIR_OPTION   },
 632   { "warnings",        optional_argument, 0,   'W' },
 633
 634   /* Parser. */
 635   { "name-prefix",   required_argument,   0,   'p' },
 636   { "include",       required_argument,   0,   'I' },
 637
 638   /* Output. */
 639   { "file-prefix", required_argument,   0,   'b' },
 640   { "output",      required_argument,   0,   'o' },
 641   { "output-file", required_argument,   0,   'o' },
 642   { "graph",       optional_argument,   0,   'g' },
 643   { "xml",         optional_argument,   0,   'x' },
 644   { "report",      required_argument,   0,   'r' },
 645   { "report-file", required_argument,   0,   REPORT_FILE_OPTION },
 646   { "verbose",     no_argument,         0,   'v' },
 647
 648   /* Hidden. */
 649   { "trace",         optional_argument,   0,     'T' },
 650
 651   /* Output.  */
 652   { "defines",     optional_argument,   0,   'd' },
 653   { "feature",     optional_argument,   0,   'f' },
 654
 655   /* Operation modes.  */
 656   { "fixed-output-files", no_argument,  0,   'y' },
 657   { "yacc",               no_argument,  0,   'y' },
 658
 659   /* Parser.  */
 660   { "debug",          no_argument,               0,   't' },
 661   { "define",         required_argument,         0,   'D' },
 662   { "force-define",   required_argument,         0,   'F' },
 663   { "locations",      no_argument,               0, LOCATIONS_OPTION },
 664   { "no-lines",       no_argument,               0,   'l' },
 665   { "raw",            no_argument,               0,     0 },
 666   { "skeleton",       required_argument,         0,   'S' },
 667   { "language",       required_argument,         0,   'L' },
 668   { "token-table",    no_argument,               0,   'k' },
 669
 670   {0, 0, 0, 0}
 671 };
 672
 673 /* Under DOS, there is no difference on the case.  This can be
 674    troublesome when looking for `.tab' etc.  */
 675 #ifdef MSDOS
 676 # define AS_FILE_NAME(File) (strlwr (File), (File))
 677 #else
 678 # define AS_FILE_NAME(File) (File)
 679 #endif
 680
 681 /* Build a location for the current command line argument. */
 682 static
 683 location
 684 command_line_location (void)
 685 {
 686   location res;
 687   /* "<command line>" is used in GCC's messages about -D. */
 688   boundary_set (&res.start, uniqstr_new ("<command line>"), optind - 1, -1);
 689   res.end = res.start;
 690   return res;
 691 }
 692
 693
 694 void
 695 getargs (int argc, char *argv[])
 696 {
 697   int c;
 698
 699   while ((c = getopt_long (argc, argv, short_options, long_options, NULL))
 700          != -1)
 701     switch (c)
 702       {
 703         /* ASCII Sorting for short options (i.e., upper case then
 704            lower case), and then long-only options.  */
 705
 706       case 0:
 707         /* Certain long options cause getopt_long to return 0.  */
 708         break;
 709
 710       case 'D': /* -DNAME[=VALUE]. */
 711       case 'F': /* -FNAME[=VALUE]. */
 712         {
 713           char* name = optarg;
 714           char* value = strchr (optarg, '=');
 715           if (value)
 716             *value++ = 0;
 717           muscle_percent_define_insert (name, command_line_location (),
 718                                         value ? value : "",
 719                                         c == 'D' ? MUSCLE_PERCENT_DEFINE_D
 720                                                  : MUSCLE_PERCENT_DEFINE_F);
 721         }
 722         break;
 723
 724       case 'I':
 725         include = AS_FILE_NAME (optarg);
 726         break;
 727
 728       case 'L':
 729         language_argmatch (optarg, command_line_prio,
 730                            command_line_location ());
 731         break;
 732
 733       case 'S':
 734         skeleton_arg (AS_FILE_NAME (optarg), command_line_prio,
 735                       command_line_location ());
 736         break;
 737
 738       case 'T':
 739         FLAGS_ARGMATCH (trace, optarg, trace_all);
 740         break;
 741
 742       case 'V':
 743         version ();
 744         exit (EXIT_SUCCESS);
 745
 746       case 'f':
 747         FLAGS_ARGMATCH (feature, optarg, feature_all);
 748         break;
 749
 750       case 'W':
 751         WARNINGS_ARGMATCH (warnings, optarg, Wall);
 752         break;
 753
 754       case 'b':
 755         spec_file_prefix = AS_FILE_NAME (optarg);
 756         break;
 757
 758       case 'd':
 759         /* Here, the -d and --defines options are differentiated.  */
 760         defines_flag = true;
 761         if (optarg)
 762           {
 763             free (spec_defines_file);
 764             spec_defines_file = xstrdup (AS_FILE_NAME (optarg));
 765           }
 766         break;
 767
 768       case 'g':
 769         graph_flag = true;
 770         if (optarg)
 771           {
 772             free (spec_graph_file);
 773             spec_graph_file = xstrdup (AS_FILE_NAME (optarg));
 774           }
 775         break;
 776
 777       case 'h':
 778         usage (EXIT_SUCCESS);
 779
 780       case 'k':
 781         token_table_flag = true;
 782         break;
 783
 784       case 'l':
 785         no_lines_flag = true;
 786         break;
 787
 788       case 'o':
 789         spec_outfile = AS_FILE_NAME (optarg);
 790         break;
 791
 792       case 'p':
 793         spec_name_prefix = optarg;
 794         break;
 795
 796       case 'r':
 797         FLAGS_ARGMATCH (report, optarg, report_all);
 798         break;
 799
 800       case 't':
 801         muscle_percent_define_insert ("parse.trace",
 802                                       command_line_location (), "",
 803                                       MUSCLE_PERCENT_DEFINE_D);
 804         break;
 805
 806       case 'v':
 807         report_flag |= report_states;
 808         break;
 809
 810       case 'x':
 811         xml_flag = true;
 812         if (optarg)
 813           {
 814             free (spec_xml_file);
 815             spec_xml_file = xstrdup (AS_FILE_NAME (optarg));
 816           }
 817         break;
 818
 819       case 'y':
 820         warnings_flag |= Wyacc;
 821         errors_flag |= Wyacc;
 822         yacc_flag = true;
 823         break;
 824
 825       case LOCATIONS_OPTION:
 826         muscle_percent_define_ensure ("locations",
 827                                       command_line_location (), true);
 828         break;
 829
 830       case PRINT_LOCALEDIR_OPTION:
 831         printf ("%s\n", LOCALEDIR);
 832         exit (EXIT_SUCCESS);
 833
 834       case PRINT_DATADIR_OPTION:
 835         printf ("%s\n", pkgdatadir ());
 836         exit (EXIT_SUCCESS);
 837
 838       case REPORT_FILE_OPTION:
 839         free (spec_verbose_file);
 840         spec_verbose_file = xstrdup (AS_FILE_NAME (optarg));
 841         break;
 842
 843       default:
 844         usage (EXIT_FAILURE);
 845       }
 846
 847   if (argc - optind != 1)
 848     {
 849       if (argc - optind < 1)
 850         error (0, 0, _("%s: missing operand"), quotearg_colon (argv[argc - 1]));
 851       else
 852         error (0, 0, _("extra operand %s"), quote (argv[optind + 1]));
 853       usage (EXIT_FAILURE);
 854     }
 855
 856   current_file = grammar_file = uniqstr_new (argv[optind]);
 857   MUSCLE_INSERT_C_STRING ("file_name", grammar_file);
 858 }
 859
 860 void
 861 tr (char *s, char from, char to)
 862 {
 863   for (; *s; s++)
 864     if (*s == from)
 865       *s = to;
 866 }