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- #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;
- }
- Ndbtuple*
- ndblookval(Ndbtuple *entry, Ndbtuple *line, char *attr, char *to)
- {
- Ndbtuple *t;
- t = ndbfindattr(entry, line, attr);
- if(t != nil){
- strncpy(to, t->val, Ndbvlen-1);
- to[Ndbvlen-1] = 0;
- }
- return t;
- }
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