2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.5 1995-01-24 16:00:22 adam
8 * Added -ansi to CFLAGS.
9 * Some changes to the dfa module.
11 * Revision 1.4 1994/10/04 17:46:44 adam
12 * Function options now returns arg with error option.
14 * Revision 1.3 1994/10/03 17:22:19 adam
15 * Optimization of grepper.
17 * Revision 1.2 1994/09/27 16:31:20 adam
18 * First version of grepper: grep with error correction.
20 * Revision 1.1 1994/09/26 10:16:55 adam
21 * First version of dfa module in alex. This version uses yacc to parse
22 * regular expressions. This should be hand-made instead.
25 * Adam Dickmeiss. 1992-1993
26 * This module is actually very old...
43 void error (const char *format, ...)
46 va_start (argptr, format);
47 fprintf (stderr, "%s error: ", prog);
48 (void) vfprintf (stderr, format, argptr);
60 static int lexer_options (int argc, char **argv)
69 fprintf (stderr, "%s: %s %s\n", prog, __DATE__, __TIME__);
94 debug_dfa_followpos = 1;
99 debug_dfa_followpos = 1;
104 fprintf (stderr, "%s: unknown option `-%s'\n",
113 int main (int argc, char **argv)
125 i = lexer_options (argc, argv);
131 fprintf (stderr, "usage\n %s [-c] [-V] [-s] [-t] [-d[stf]] file\n",
135 else while (--argc > 0)
136 if (**++argv != '-' && **argv)
140 i = read_file (*argv, dfa);
151 fprintf (stderr, "%s: no files specified\n", prog);