freebsd-skq/gnu/usr.bin/rcs/lib/rcskeys.c

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/* RCS keyword table and match operation */
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/* Copyright 1982, 1988, 1989 Walter Tichy
Copyright 1990, 1991, 1992, 1993, 1995 Paul Eggert
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Distributed under license by the Free Software Foundation, Inc.
This file is part of RCS.
RCS 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.
RCS 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 RCS; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Report problems and direct all questions to:
rcs-bugs@cs.purdue.edu
*/
/*
* Revision 5.4 1995/06/16 06:19:24 eggert
* Update FSF address.
*
* Revision 5.3 1993/11/03 17:42:27 eggert
* Add Name keyword.
*
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* Revision 5.2 1991/08/19 03:13:55 eggert
* Say `T const' instead of `const T'; it's less confusing for pointer types.
* (This change was made in other source files too.)
*
* Revision 5.1 1991/04/21 11:58:25 eggert
* Don't put , just before } in initializer.
*
* Revision 5.0 1990/08/22 08:12:54 eggert
* Add -k. Ansify and Posixate.
*
* Revision 4.3 89/05/01 15:13:02 narten
* changed copyright header to reflect current distribution rules
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*
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* Revision 4.2 87/10/18 10:36:33 narten
* Updating version numbers. Changes relative to 1.1 actuallyt
* relative to 4.1
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*
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* Revision 1.2 87/09/24 14:00:10 narten
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* Sources now pass through lint (if you ignore printf/sprintf/fprintf
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* warnings)
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*
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* Revision 4.1 83/05/04 10:06:53 wft
* Initial revision.
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*
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*/
#include "rcsbase.h"
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libId(keysId, "$FreeBSD$")
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char const *Keyword[] = {
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/* This must be in the same order as rcsbase.h's enum markers type. */
0,
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AUTHOR, DATE, HEADER, IDH,
LOCKER, LOG, NAME, RCSFILE, REVISION, SOURCE, STATE, CVSHEADER,
NULL
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};
/* Expand all keywords by default */
static int ExpandKeyword[] = {
false,
true, true, true, true,
true, true, true, true, true, true, true, true,
true
};
enum markers LocalIdMode = Id;
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enum markers
trymatch(string)
char const *string;
/* function: Checks whether string starts with a keyword followed
* by a KDELIM or a VDELIM.
* If successful, returns the appropriate marker, otherwise Nomatch.
*/
{
register int j;
register char const *p, *s;
for (j = sizeof(Keyword)/sizeof(*Keyword); (--j); ) {
if (!ExpandKeyword[j])
continue;
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/* try next keyword */
p = Keyword[j];
if (p == NULL)
continue;
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s = string;
while (*p++ == *s++) {
if (!*p)
switch (*s) {
case KDELIM:
case VDELIM:
return (enum markers)j;
default:
return Nomatch;
}
}
}
return(Nomatch);
}
void
setIncExc(arg)
char const *arg;
/* Sets up the ExpandKeyword table according to command-line flags */
{
char *key;
char *copy, *next;
int include = 0, j;
copy = strdup(arg);
next = copy;
switch (*next++) {
case 'e':
include = false;
break;
case 'i':
include = true;
break;
default:
free(copy);
return;
}
if (include)
for (j = sizeof(Keyword)/sizeof(*Keyword); (--j); )
ExpandKeyword[j] = false;
key = strtok(next, ",");
while (key) {
for (j = sizeof(Keyword)/sizeof(*Keyword); (--j); ) {
if (Keyword[j] == NULL)
continue;
if (!strcmp(key, Keyword[j]))
ExpandKeyword[j] = include;
}
key = strtok(NULL, ",");
}
free(copy);
return;
}
void
setRCSLocalId(string)
char const *string;
/* function: sets local RCS id and RCSLOCALID envariable */
{
static char local_id[keylength+1];
char *copy, *next, *key;
int j;
copy = strdup(string);
next = copy;
key = strtok(next, "=");
if (strlen(key) > keylength)
faterror("LocalId is too long");
VOID strcpy(local_id, key);
Keyword[LocalId] = local_id;
/* options? */
while (key = strtok(NULL, ",")) {
if (!strcmp(key, Keyword[Id]))
LocalIdMode=Id;
else if (!strcmp(key, Keyword[Header]))
LocalIdMode=Header;
else if (!strcmp(key, Keyword[CVSHeader]))
LocalIdMode=CVSHeader;
else
error("Unknown LocalId mode");
}
free(copy);
}