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libndb: add missing ndbdedup.c

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This commit is contained in:
cinap_lenrek 2018-09-16 15:27:17 +02:00
parent ed41dd5b28
commit 9d60ece816
1 changed files with 30 additions and 0 deletions
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30
sys/src/libndb/ndbdedup.c Normal file
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@ -0,0 +1,30 @@
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <ndb.h>
/*
* remove duplicates
*/
Ndbtuple*
ndbdedup(Ndbtuple *t)
{
Ndbtuple *nt, *last, *tt;
for(nt = t; nt != nil; nt = nt->entry){
last = nt;
for(tt = nt->entry; tt != nil; tt = last->entry){
if(strcmp(nt->attr, tt->attr) != 0
|| strcmp(nt->val, tt->val) != 0){
last = tt;
continue;
}
if(last->line == tt)
last->line = tt->line;
last->entry = tt->entry;
tt->entry = nil;
ndbfree(tt);
}
}
return t;
}