--- /dev/null
+/* Parse command line arguments for bison,
+ Copyright (C) 1984, 1986, 1989 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+
+#include <stdio.h>
+#include "getopt.h"
+#include "system.h"
+#include "files.h"
+
+int verboseflag;
+int definesflag;
+int debugflag;
+int nolinesflag;
+char *spec_name_prefix; /* for -p. */
+char *spec_file_prefix; /* for -b. */
+extern int fixed_outfiles;/* for -y */
+
+extern void fatal();
+
+struct option longopts[] =
+{
+ {"debug", 0, &debugflag, 1},
+ {"defines", 0, &definesflag, 1},
+ {"file-prefix", 1, 0, 'b'},
+ {"fixed-output-files", 0, &fixed_outfiles, 1},
+ {"name-prefix", 1, 0, 'a'},
+ {"no-lines", 0, &nolinesflag, 1},
+ {"output", 1, 0, 'o'},
+ {"output-file", 1, 0, 'o'},
+ {"verbose", 0, &verboseflag, 1},
+ {"version", 0, 0, 'V'},
+ {"yacc", 0, &fixed_outfiles, 1},
+ {0, 0, 0, 0}
+};
+
+void
+getargs(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register int c;
+ int longind;
+ extern char *program_name;
+ extern char *version_string;
+
+ verboseflag = 0;
+ definesflag = 0;
+ debugflag = 0;
+ fixed_outfiles = 0;
+
+ while ((c = getopt_long (argc, argv, "yvdltVo:b:p:", longopts, &longind))
+ != EOF)
+ {
+ if (c == 0 && longopts[longind].flag == 0)
+ c = longopts[longind].val;
+ switch (c)
+ {
+ case 0:
+ /* Certain long options cause getopt_long to return 0. */
+ break;
+
+ case 'y':
+ fixed_outfiles = 1;
+ break;
+
+ case 'V':
+ printf("%s", version_string);
+ break;
+
+ case 'v':
+ verboseflag = 1;
+ break;
+
+ case 'd':
+ definesflag = 1;
+ break;
+
+ case 'l':
+ nolinesflag = 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:
+ fprintf (stderr, "\
+Usage: %s [-dltvyV] [-b file-prefix] [-o outfile] [-p name-prefix]\n\
+ [--debug] [--defines] [--fixed-output-files] [--no-lines]\n\
+ [--verbose] [--version] [--yacc]\n\
+ [--file-prefix=prefix] [--name-prefix=prefix]\n\
+ [--output=outfile] grammar-file\n",
+ program_name);
+ exit (1);
+ }
+ }
+
+ if (optind == argc)
+ {
+ fprintf(stderr, "%s: no grammar file given\n", program_name);
+ exit(1);
+ }
+ if (optind < argc - 1)
+ fprintf(stderr, "%s: warning: extra arguments ignored\n", program_name);
+
+ infile = argv[optind];
+}