1/* RCS keyword table and match operation */
2
3/* Copyright 1982, 1988, 1989 Walter Tichy
4   Copyright 1990, 1991, 1992, 1993, 1995 Paul Eggert
5   Distributed under license by the Free Software Foundation, Inc.
6
7This file is part of RCS.
8
9RCS is free software; you can redistribute it and/or modify
10it under the terms of the GNU General Public License as published by
11the Free Software Foundation; either version 2, or (at your option)
12any later version.
13
14RCS is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with RCS; see the file COPYING.
21If not, write to the Free Software Foundation,
2259 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23
24Report problems and direct all questions to:
25
26    rcs-bugs@cs.purdue.edu
27
28*/
29
30/*
31 * $Log: rcskeys.c,v $
32 * Revision 1.1  2003/06/11 15:56:10  darkwyrm
33 * Added rcs, gzip, sed, and associated utilities.
34 *
35 * Revision 5.4  1995/06/16 06:19:24  eggert
36 * Update FSF address.
37 *
38 * Revision 5.3  1993/11/03 17:42:27  eggert
39 * Add Name keyword.
40 *
41 * Revision 5.2  1991/08/19  03:13:55  eggert
42 * Say `T const' instead of `const T'; it's less confusing for pointer types.
43 * (This change was made in other source files too.)
44 *
45 * Revision 5.1  1991/04/21  11:58:25  eggert
46 * Don't put , just before } in initializer.
47 *
48 * Revision 5.0  1990/08/22  08:12:54  eggert
49 * Add -k.  Ansify and Posixate.
50 *
51 * Revision 4.3  89/05/01  15:13:02  narten
52 * changed copyright header to reflect current distribution rules
53 *
54 * Revision 4.2  87/10/18  10:36:33  narten
55 * Updating version numbers. Changes relative to 1.1 actuallyt
56 * relative to 4.1
57 *
58 * Revision 1.2  87/09/24  14:00:10  narten
59 * Sources now pass through lint (if you ignore printf/sprintf/fprintf
60 * warnings)
61 *
62 * Revision 4.1  83/05/04  10:06:53  wft
63 * Initial revision.
64 *
65 */
66
67
68#include "rcsbase.h"
69
70libId(keysId, "$Id: rcskeys.c 3476 2003-06-11 15:56:10Z darkwyrm $")
71
72
73char const *const Keyword[] = {
74    /* This must be in the same order as rcsbase.h's enum markers type. */
75	0,
76	AUTHOR, DATE, HEADER, IDH,
77	LOCKER, LOG, NAME, RCSFILE, REVISION, SOURCE, STATE
78};
79
80
81
82	enum markers
83trymatch(string)
84	char const *string;
85/* function: Checks whether string starts with a keyword followed
86 * by a KDELIM or a VDELIM.
87 * If successful, returns the appropriate marker, otherwise Nomatch.
88 */
89{
90        register int j;
91	register char const *p, *s;
92	for (j = sizeof(Keyword)/sizeof(*Keyword);  (--j);  ) {
93		/* try next keyword */
94		p = Keyword[j];
95		s = string;
96		while (*p++ == *s++) {
97			if (!*p)
98			    switch (*s) {
99				case KDELIM:
100				case VDELIM:
101				    return (enum markers)j;
102				default:
103				    return Nomatch;
104			    }
105		}
106        }
107        return(Nomatch);
108}
109
110