63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
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#ifndef CDB_H
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#define CDB_H
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#include <stddef.h>
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#include <libowfat/uint32.h>
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#include <libowfat/uint64.h>
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#include <libowfat/compiler.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define CDB_HASHSTART 5381
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att_const
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uint32 cdb_hashadd(uint32 h, unsigned char c);
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att_pure __bufin(1,2)
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uint32 cdb_hash(const unsigned char *buf, size_t len);
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struct cdb {
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char *map; /* 0 if no map is available */
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int64 fd;
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uint32 size; /* initialized if map is nonzero */
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uint32 loop; /* number of hash slots searched under this key */
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uint32 khash; /* initialized if loop is nonzero */
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uint32 kpos; /* initialized if loop is nonzero */
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uint32 hpos; /* initialized if loop is nonzero */
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uint32 hslots; /* initialized if loop is nonzero */
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uint32 dpos; /* initialized if cdb_findnext() returns 1 */
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uint32 dlen; /* initialized if cdb_findnext() returns 1 */
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} ;
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void cdb_free(struct cdb *c);
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void cdb_init(struct cdb *c, int64 fd);
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int cdb_read(struct cdb * restrict c, unsigned char * restrict buf, size_t len, uint32 pos);
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void cdb_findstart(struct cdb *);
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__bufin(2,3)
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int cdb_findnext(struct cdb * restrict c, const unsigned char * restrict buf, size_t len);
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__bufin(2,3)
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int cdb_find(struct cdb * restrict c, const unsigned char * restrict buf, size_t len);
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att_write(1)
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int cdb_firstkey(struct cdb * restrict c,uint32 * restrict kpos);
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att_write(1)
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int cdb_nextkey(struct cdb * restrict c,uint32 * restrict kpos);
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__bufin_ornull(2,3)
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int cdb_successor(struct cdb * restrict c, const unsigned char * restrict buf, size_t len);
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#define cdb_datapos(c) ((c)->dpos)
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#define cdb_datalen(c) ((c)->dlen)
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#define cdb_keypos(c) ((c)->kpos)
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#define cdb_keylen(c) ((c)->dpos-(c)->kpos)
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#ifdef __cplusplus
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}
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#endif
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#endif
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