86 lines
1.5 KiB
C
86 lines
1.5 KiB
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <lib9.h>
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#include <bio.h>
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#include <jehanne/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());
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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_t 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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}
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