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cdb_find(3) Library Functions Manual cdb_find(3) NAME cdb_find - look up a key in a constant database SYNTAX #include <libowfat/cdb.h> #include <libowfat/uint32.h> int cdb_find(struct cdb *c, char *key, size_t keylen); int cdb_datalen(struct cdb *c); int cdb_datapos(struct cdb *c); int cdb_findnext(struct cdb *c, char *key, size_t keylen); DESCRIPTION cdb_find looks for key. If cdb_find returns 0, the database does not con- tain 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_findnext 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 ALSO cdb_read(3), cdb_init(3), cdb_free(3), cdbmake(1) cdb_find(3)
NAME | SYNTAX | DESCRIPTION | EXAMPLE | SEE ALSO
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