/*
 *                     RCS keyword table and match operation
 */
/**********************************************************************************
 **********************************************************************************
 *
 * Copyright (C) 1982 by Walter F. Tichy
 *                       Purdue University
 *                       Computer Science Department
 *                       West Lafayette, IN 47907
 *
 * All rights reserved. No part of this software may be sold or distributed
 * in any form or by any means without the prior written permission of the
 * author.
 * Report problems and direct all inquiries to Tichy@purdue (ARPA net).
 */


/* $Log:	C.rcskeys $
 * Revision 1.1  90/05/22  21:53:42  pmoore
 * Initial revision
 * 
 * Revision 4.2  87/10/18  10:36:33  narten
 * Updating version numbers. Changes relative to 1.1 actuallyt
 * relative to 4.1
 *
 * Revision 1.2  87/09/24  14:00:10  narten
 * Sources now pass through lint (if you ignore printf/sprintf/fprintf
 * warnings)
 *
 * Revision 1.1  84/01/23  14:50:32  kcs
 * Initial revision
 *
 * Revision 4.1  83/05/04  10:06:53  wft
 * Initial revision.
 *
 */


#include "rcsbase.h"


struct
{
	char *keyword;
	enum markers marker;
}
    markertable[] =
{
	{
		AUTHOR, Author
	},
	{
		DATE, Date
	},
	{
		HEADER, Header
	},
	{
		IDH, Id
	},
	{
		LOCKER, Locker
	},
	{
		LOG, Log
	},
	{
		RCSFILE, RCSfile
	},
	{
		REVISION, Revision
	},
	{
		SOURCE, Source
	},
	{
		STATE, State
	},
	{
		nil, Nomatch
	}
};


/* Function: Checks whether string starts with a keyword followed
 * by a KDELIM or a VDELIM. If onlyvdelim==true, only a VDELIM
 * may follow the keyword.
 * If successful, returns the appropriate marker, otherwise Nomatch.
 */
enum markers trymatch(char *string, int onlyvdelim)
{
	register int j;
	register char *p, *s;
	for (j = 0; markertable[j].keyword != nil; j++)
	{
		/* try next keyword */
		p = markertable[j].keyword;
		s = string;
		while (*p != '\0' && *s != '\0' && *p == *s)
		{
			p++;
			s++;
		}
		if (*p != '\0')
			continue;	/* no match */
		if ((*s == VDELIM) || (!onlyvdelim && (*s == KDELIM)))
			return (markertable[j].marker);
	}
	return (Nomatch);
}