* src/nullable.h: New file.

[bison.git] / src / getargs.c

diff --git a/src/getargs.c b/src/getargs.c
index 80b4d1492560606a325dcceea7478c1713ca4761..de9880b05f393f8f8415197c543817d14f6993f8 100644 (file)
--- a/src/getargs.c
+++ b/src/getargs.c
@@ -1,45 +1,48 @@
-/* Parse command line arguments for bison,
-   Copyright (C) 1984, 1986, 1989, 1992 Free Software Foundation, Inc.
+/* Parse command line arguments for bison.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.

 
 

-This file is part of Bison, the GNU Compiler Compiler.
+   This file is part of Bison, the GNU Compiler Compiler.

 
 

-Bison is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+   Bison is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.

 
 

-Bison is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with Bison; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   Bison is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.

 
 

+   You should have received a copy of the GNU General Public License
+   along with Bison; see the file COPYING.  If not, write to the Free
+   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */

 
 #include <stdio.h>
 #include "getopt.h"
 #include "system.h"
 #include "files.h"
 
 #include <stdio.h>
 #include "getopt.h"
 #include "system.h"
 #include "files.h"

+#include "getargs.h"
+
+char *spec_file_prefix; /* for -b. */
+char *spec_name_prefix; /* for -p.  */

 
 

-int verboseflag;
-int definesflag;
-int debugflag;
-int nolinesflag;
+int debugflag = 0;
+int definesflag = 0;
+int nolinesflag = 0;

 int noparserflag = 0;
 int noparserflag = 0;

-int toknumflag = 0;

 int rawtoknumflag = 0;
 int rawtoknumflag = 0;

-char *spec_name_prefix; /* for -p.  */
-char *spec_file_prefix; /* for -b. */
+int toknumflag = 0;
+int verboseflag = 0;
+

 extern int fixed_outfiles;/* for -y */
 extern int fixed_outfiles;/* for -y */

-  
+

 extern char *program_name;
 extern char *program_name;

-extern char *version_string;

 
 

-extern void warns();   /* main.c */
+extern void warns PARAMS((char *, char *));    /* main.c */
+extern void getargs PARAMS((int argc, char *[]));

 
 

-struct option longopts[] =
+static struct option longopts[] =

 {
   {"debug", 0, &debugflag, 1},
   {"defines", 0, &definesflag, 1},
 {
   {"debug", 0, &debugflag, 1},
   {"defines", 0, &definesflag, 1},


@@ -59,24 +62,92 @@ struct option longopts[] =
   {0, 0, 0, 0}
 };
 
   {0, 0, 0, 0}
 };
 

-void
-usage (stream)
-     FILE *stream;
+/*---------------------------.
+| Display the help message.  |
+`---------------------------*/
+
+static void
+usage (FILE *stream)
+{
+  /* Some efforts were made to ease the translators' task, please
+     continue.  */
+  fputs (_("\
+GNU bison generates parsers for LALR(1) grammars.\n"), stream);
+  putc ('\n', stream);
+
+  fprintf (stream, _("\
+Usage: %s [OPTION]... FILE\n"), program_name);
+  putc ('\n', stream);
+
+  fputs (_("\
+If a long option shows an argument as mandatory, then it is mandatory\n\
+for the equivalent short option also.  Similarly for optional arguments.\n"),
+        stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Operation modes:\n\
+  -h, --help      display this help and exit\n\
+  -V, --version   output version information and exit\n\
+  -y, --yacc      emulate POSIX yacc\n"), stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Parser:\n\
+  -t, --debug                instrument the parser for debugging\n\
+  -p, --name-prefix=PREFIX   prepend PREFIX to the external symbols\n\
+  -l, --no-lines             don't generate `#line' directives\n\
+  -n, --no-parser            generate the tables only\n\
+  -r, --raw                  number the tokens from 3\n\
+  -k, --token-table          include a table of token names\n\
+"), stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Output:\n\
+  -d, --defines              also produce a header file\n\
+  -v, --verbose              also produce an explanation of the automaton\n\
+  -b, --file-prefix=PREFIX   specify a PREFIX for output files\n\
+  -o, --output-file=FILE     leave output to FILE\n"), stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Report bugs to <bug-bison@gnu.org>.\n"), stream);
+}
+
+
+/*------------------------------.
+| Display the version message.  |
+`------------------------------*/
+
+static void
+version (FILE *stream)

 {
 {

+  /* Some efforts were made to ease the translators' task, please
+     continue.  */

   fprintf (stream, _("\
   fprintf (stream, _("\

-Usage: %s [-dhklntvyV] [-b file-prefix] [-o outfile] [-p name-prefix]\n\
-       [--debug] [--defines] [--fixed-output-files] [--no-lines]\n\
-       [--verbose] [--version] [--help] [--yacc]\n\
-       [--no-parser] [--token-table]\n\
-       [--file-prefix=prefix] [--name-prefix=prefix]\n\
-       [--output=outfile] grammar-file\n"),
-          program_name);
+bison (GNU Bison) %s"), VERSION);
+  putc ('\n', stream);
+  putc ('\n', stream);
+
+  fputs (_("\
+Copyright (C) 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.\n"),
+        stream);
+
+  fputs (_("\
+This is free software; see the source for copying conditions.  There is NO\n\
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
+"),
+        stream);

 }
 
 }
 

+
+/*----------------------.
+| Process the options.  |
+`----------------------*/
+

 void
 void

-getargs(argc, argv)
-     int argc;
-     char *argv[];
+getargs (int argc, char *argv[])

 {
   register int c;
 
 {
   register int c;
 


@@ -100,27 +171,27 @@ getargs(argc, argv)
        case 'y':
          fixed_outfiles = 1;
          break;
        case 'y':
          fixed_outfiles = 1;
          break;

-         
+

        case 'h':
          usage (stdout);
          exit (0);
 
        case 'V':
        case 'h':
          usage (stdout);
          exit (0);
 
        case 'V':

-         printf ("%s", version_string);
+         version (stdout);

          exit (0);
          exit (0);

-         
+

        case 'v':
          verboseflag = 1;
          break;
        case 'v':
          verboseflag = 1;
          break;

-         
+

        case 'd':
          definesflag = 1;
          break;
        case 'd':
          definesflag = 1;
          break;

-         
+

        case 'l':
          nolinesflag = 1;
          break;
        case 'l':
          nolinesflag = 1;
          break;

-         
+

        case 'k':
          toknumflag = 1;
          break;
        case 'k':
          toknumflag = 1;
          break;


@@ -128,27 +199,27 @@ getargs(argc, argv)
        case 'r':
          rawtoknumflag = 1;
          break;
        case 'r':
          rawtoknumflag = 1;
          break;

-         
+

        case 'n':
          noparserflag = 1;
          break;
        case 'n':
          noparserflag = 1;
          break;

-         
+

        case 't':
          debugflag = 1;
          break;
        case 't':
          debugflag = 1;
          break;

-         
+

        case 'o':
          spec_outfile = optarg;
          break;
        case 'o':
          spec_outfile = optarg;
          break;

-         
+

        case 'b':
          spec_file_prefix = optarg;
          break;
        case 'b':
          spec_file_prefix = optarg;
          break;

-         
+

        case 'p':
          spec_name_prefix = optarg;
          break;
        case 'p':
          spec_name_prefix = optarg;
          break;

-         
+

        default:
          usage (stderr);
          exit (1);
        default:
          usage (stderr);
          exit (1);


@@ -157,12 +228,12 @@ getargs(argc, argv)
 
   if (optind == argc)
     {
 
   if (optind == argc)
     {

-      fprintf(stderr, _("%s: no grammar file given\n"), program_name);
-      exit(1);
+      fprintf (stderr, _("%s: no grammar file given\n"), program_name);
+      exit (1);

     }
   if (optind < argc - 1)
     }
   if (optind < argc - 1)

-    fprintf(stderr, _("%s: extra arguments ignored after '%s'\n"),
-               program_name, argv[optind]);
+    fprintf (stderr, _("%s: extra arguments ignored after `%s'\n"),
+            program_name, argv[optind]);

 
   infile = argv[optind];
 }
 
   infile = argv[optind];
 }