9f36c7f497
In case you're wondering, the gcc-2.7.2.1 import uses this to generate code. The size of the generated code is bigger than the entire bison release, making this a saving. The bison doc is pretty good apparently.
169 lines
3.5 KiB
C
169 lines
3.5 KiB
C
/* Parse command line arguments for bison,
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Copyright (C) 1984, 1986, 1989, 1992 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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Bison is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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Bison is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bison; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include "getopt.h"
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#include "system.h"
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#include "files.h"
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int verboseflag;
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int definesflag;
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int debugflag;
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int nolinesflag;
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int noparserflag = 0;
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int toknumflag = 0;
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int rawtoknumflag = 0;
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char *spec_name_prefix; /* for -p. */
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char *spec_file_prefix; /* for -b. */
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extern int fixed_outfiles;/* for -y */
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extern char *program_name;
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extern char *version_string;
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extern void warns(); /* main.c */
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struct option longopts[] =
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{
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{"debug", 0, &debugflag, 1},
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{"defines", 0, &definesflag, 1},
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{"file-prefix", 1, 0, 'b'},
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{"fixed-output-files", 0, &fixed_outfiles, 1},
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{"help", 0, 0, 'h'},
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{"name-prefix", 1, 0, 'p'}, /* was 'a'; apparently unused -wjh */
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{"no-lines", 0, &nolinesflag, 1},
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{"no-parser", 0, &noparserflag, 1},
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{"output", 1, 0, 'o'},
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{"output-file", 1, 0, 'o'},
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{"raw", 0, &rawtoknumflag, 1},
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{"token-table", 0, &toknumflag, 1},
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{"verbose", 0, &verboseflag, 1},
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{"version", 0, 0, 'V'},
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{"yacc", 0, &fixed_outfiles, 1},
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{0, 0, 0, 0}
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};
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void
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usage (stream)
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FILE *stream;
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{
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fprintf (stream, "\
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Usage: %s [-dhklntvyV] [-b file-prefix] [-o outfile] [-p name-prefix]\n\
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[--debug] [--defines] [--fixed-output-files] [--no-lines]\n\
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[--verbose] [--version] [--help] [--yacc]\n\
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[--no-parser] [--token-table]\n\
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[--file-prefix=prefix] [--name-prefix=prefix]\n\
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[--output=outfile] grammar-file\n",
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program_name);
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}
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void
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getargs(argc, argv)
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int argc;
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char *argv[];
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{
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register int c;
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verboseflag = 0;
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definesflag = 0;
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debugflag = 0;
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noparserflag = 0;
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rawtoknumflag = 0;
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toknumflag = 0;
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fixed_outfiles = 0;
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while ((c = getopt_long (argc, argv, "yvdhrltknVo:b:p:", longopts, (int *)0))
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!= EOF)
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{
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switch (c)
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{
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case 0:
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/* Certain long options cause getopt_long to return 0. */
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break;
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case 'y':
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fixed_outfiles = 1;
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break;
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case 'h':
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usage (stdout);
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exit (0);
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case 'V':
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printf ("%s", version_string);
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exit (0);
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case 'v':
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verboseflag = 1;
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break;
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case 'd':
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definesflag = 1;
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break;
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case 'l':
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nolinesflag = 1;
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break;
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case 'k':
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toknumflag = 1;
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break;
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case 'r':
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rawtoknumflag = 1;
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break;
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case 'n':
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noparserflag = 1;
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break;
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case 't':
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debugflag = 1;
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break;
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case 'o':
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spec_outfile = optarg;
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break;
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case 'b':
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spec_file_prefix = optarg;
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break;
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case 'p':
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spec_name_prefix = optarg;
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break;
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default:
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usage (stderr);
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exit (1);
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}
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}
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if (optind == argc)
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{
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fprintf(stderr, "%s: no grammar file given\n", program_name);
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exit(1);
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}
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if (optind < argc - 1)
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fprintf(stderr, "%s: extra arguments ignored after '%s'\n",
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program_name, argv[optind]);
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infile = argv[optind];
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}
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