cdb_find(3)cdb_find(3)NAMEcdb_find - look up a key in a constant database
SYNTAX
#include <cdb.h>
#include <uint32.h>
int cdb_find(struct cdb *c,char *key,unsigned long int keylen);
int cdb_datalen(struct cdb *c);
int cdb_datapos(struct cdb *c);
int cdb_findnext(struct cdb *c,char *key,unsigned long int keylen);
DESCRIPTIONcdb_find looks for key. If cdb_find returns 0, the database does not
contain that key; stop. If cdb_find returns -1, there was a read error;
abort.
cdb_datalen returns the length of the data associated with the key.
Use it to allocate a pointer p with enough space to hold the data.
cdb_datapos returns the position of the data inside the file. Use it
as argument to cdb_read to retrieve the data.
There may be several records under a single key. You can use cdb_find‐
next to find the next record under this key.
EXAMPLE
static struct c;
if (cdb_find(&c,key,strlen(key)>0) {
char *buf=alloca(cdb_datalen(&c));
cdb_read(&c,buf,cdb_datalen(&c),cdb_datapos(&c));
write(1,buf,cdb_datalen(&c));
}
SEE ALSOcdb_read(3), cdb_init(3), cdb_free(3), cdbmake(1)cdb_find(3)
