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