* Look for a pair with the given attribute. look first on the same line,

#include <u.h>
#include <libc.h>
#include <bio.h>
#include <ip.h>
#include <ndb.h>

/*
* Look for a pair with the given attribute. look first on the same line,
* then in the whole entry.
*/
Ndbtuple*
ndbfindattr(Ndbtuple *entry, Ndbtuple *line, char *attr)
{
Ndbtuple *nt;

/* first look on same line (closer binding) */
for(nt = line; nt;){
if(strcmp(attr, nt->attr) == 0)
return nt;
nt = nt->line;
if(nt == line)
break;
}

/* search whole tuple */
for(nt = entry; nt; nt = nt->entry)
if(strcmp(attr, nt->attr) == 0)
return nt;

return nil;
}