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/* 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.
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, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include <stdio.h>
#include "getopt.h"
#include "system.h"
#include "files.h"
int verboseflag;
int definesflag;
int debugflag;
int nolinesflag;
int noparserflag = 0;
int toknumflag = 0;
int rawtoknumflag = 0;
char *spec_name_prefix; /* for -p. */
char *spec_file_prefix; /* for -b. */
extern int fixed_outfiles;/* for -y */
extern char *program_name;
extern void warns PARAMS((char *, char *)); /* main.c */
struct option longopts[] =
{
{"debug", 0, &debugflag, 1},
{"defines", 0, &definesflag, 1},
{"file-prefix", 1, 0, 'b'},
{"fixed-output-files", 0, &fixed_outfiles, 1},
{"help", 0, 0, 'h'},
{"name-prefix", 1, 0, 'p'}, /* was 'a'; apparently unused -wjh */
{"no-lines", 0, &nolinesflag, 1},
{"no-parser", 0, &noparserflag, 1},
{"output", 1, 0, 'o'},
{"output-file", 1, 0, 'o'},
{"raw", 0, &rawtoknumflag, 1},
{"token-table", 0, &toknumflag, 1},
{"verbose", 0, &verboseflag, 1},
{"version", 0, 0, 'V'},
{"yacc", 0, &fixed_outfiles, 1},
{0, 0, 0, 0}
};
/*---------------------------.
| Display the help message. |
`---------------------------*/
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);
}
void
getargs (int argc, char *argv[])
{
register int c;
verboseflag = 0;
definesflag = 0;
debugflag = 0;
noparserflag = 0;
rawtoknumflag = 0;
toknumflag = 0;
fixed_outfiles = 0;
while ((c = getopt_long (argc, argv, "yvdhrltknVo:b:p:", longopts, (int *)0))
!= EOF)
{
switch (c)
{
case 0:
/* Certain long options cause getopt_long to return 0. */
break;
case 'y':
fixed_outfiles = 1;
break;
case 'h':
usage (stdout);
exit (0);
case 'V':
printf ("%s\n", VERSION_STRING);
exit (0);
case 'v':
verboseflag = 1;
break;
case 'd':
definesflag = 1;
break;
case 'l':
nolinesflag = 1;
break;
case 'k':
toknumflag = 1;
break;
case 'r':
rawtoknumflag = 1;
break;
case 'n':
noparserflag = 1;
break;
case 't':
debugflag = 1;
break;
case 'o':
spec_outfile = optarg;
break;
case 'b':
spec_file_prefix = optarg;
break;
case 'p':
spec_name_prefix = optarg;
break;
default:
usage (stderr);
exit (1);
}
}
if (optind == argc)
{
fprintf(stderr, _("%s: no grammar file given\n"), program_name);
exit(1);
}
if (optind < argc - 1)
fprintf(stderr, _("%s: extra arguments ignored after `%s'\n"),
program_name, argv[optind]);
infile = argv[optind];
}
|
