/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <bio.h>#include <ctype.h>#include <ndb.h>#include "ndbhf.h"  /* *  parse a single tuple */char*_ndbparsetuple(char *cp, Ndbtuple **tp){	char *p;	int len;	Ndbtuple *t; 	/* a '#' starts a comment lasting till new line */	EATWHITE(cp);	if(*cp == '#' || *cp == '\n')		return 0; 	t = ndbnew(nil, nil);	setmalloctag(t, getcallerpc(&cp));	*tp = t; 	/* parse attribute */	p = cp;	while(*cp != '=' && !ISWHITE(*cp) && *cp != '\n')		cp++;	len = cp - p;	if(len >= Ndbalen)		len = Ndbalen-1;	strncpy(t->attr, p, len); 	/* parse value */	EATWHITE(cp);	if(*cp == '='){		cp++;		if(*cp == '"'){			p = ++cp;			while(*cp != '\n' && *cp != '"')				cp++;			len = cp - p;			if(*cp == '"')				cp++;		} else if(*cp == '#'){			len = 0;		} else {			p = cp;			while(!ISWHITE(*cp) && *cp != '\n')				cp++;			len = cp - p;		}		ndbsetval(t, p, len);	} 	return cp;} /* *  parse all tuples in a line.  we assume that the  *  line ends in a '\n'. * *  the tuples are linked as a list using ->entry and *  as a ring using ->line. */Ndbtuple*_ndbparseline(char *cp){	Ndbtuple *t;	Ndbtuple *first, *last; 	first = last = 0;	while(*cp != '#' && *cp != '\n'){		t = 0;		cp = _ndbparsetuple(cp, &t);		if(cp == 0)			break;		if(first){			last->line = t;			last->entry = t;		} else			first = t;		last = t;		t->line = 0;		t->entry = 0;		setmalloctag(t, getcallerpc(&cp));	}	if(first)		last->line = first;	ndbsetmalloctag(first, getcallerpc(&cp));	return first;}