/*  * 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" /* *  free a parsed entry */voidndbfree(Ndbtuple *t){	Ndbtuple *tn; 	for(; t; t = tn){		tn = t->entry;		if(t->val != t->valbuf){			free(t->val);		}		free(t);	}} /* *  set a value in a tuple */voidndbsetval(Ndbtuple *t, char *val, int n){	if(n < Ndbvlen){		if(t->val != t->valbuf){			free(t->val);			t->val = t->valbuf;		}	} else {		if(t->val != t->valbuf)			t->val = realloc(t->val, n+1);		else			t->val = malloc(n+1);		if(t->val == nil)			sysfatal("ndbsetval %r");	}	strncpy(t->val, val, n);	t->val[n] = 0;} /* *  allocate a tuple */Ndbtuple*ndbnew(char *attr, char *val){	Ndbtuple *t; 	t = mallocz(sizeof(*t), 1);	if(t == nil)		sysfatal("ndbnew %r");	if(attr != nil)		strncpy(t->attr, attr, sizeof(t->attr)-1);	t->val = t->valbuf;	if(val != nil)		ndbsetval(t, val, strlen(val));	ndbsetmalloctag(t, getcallerpc(&attr));	return t;	} /* *  set owner of a tuple */voidndbsetmalloctag(Ndbtuple *t, uintptr tag){	for(; t; t=t->entry)		setmalloctag(t, tag);}