3 * Parsing tracing options
5 * (c) 1999 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of the mLib utilities library.
12 * mLib is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU Library General Public License as
14 * published by the Free Software Foundation; either version 2 of the
15 * License, or (at your option) any later version.
17 * mLib is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Library General Public License for more details.
22 * You should have received a copy of the GNU Library General Public
23 * License along with mLib; if not, write to the Free
24 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
28 /*----- Header files ------------------------------------------------------*/
38 /*----- Main code ---------------------------------------------------------*/
40 /* --- @traceopt@ --- *
42 * Arguments: @const trace_opt *t@ = pointer to trace options table
43 * @const char *p@ = option string supplied by user
44 * @unsigned f@ = initial tracing flags
45 * @unsigned bad@ = forbidden tracing flags
47 * Returns: Trace flags as set by user.
49 * Use: Parses an option string from the user and sets the
50 * appropriate trace flags. If the argument is null or a single
51 * `?' character, a help message is displayed.
54 unsigned traceopt(const trace_opt
*t
, const char *p
,
55 unsigned f
, unsigned bad
)
59 /* --- Dump out help text --- */
61 if (!p
|| STRCMP(p
, ==, "?")) {
63 puts("Trace options:");
64 for (tt
= t
; tt
->ch
; tt
++) {
65 if (!(tt
->f
& ~bad
) || !tt
->help
)
67 printf(" `%c': %s\n", tt
->ch
, tt
->help
);
72 /* --- Parse the string properly --- */
85 for (tt
= t
; tt
->ch
; tt
++) {
96 moan("unknown trace option `%c'", *p
);
106 /*----- That's all, folks -------------------------------------------------*/