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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 
     22 /*
     23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef	_DT_STRTAB_H
     28 #define	_DT_STRTAB_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #include <sys/types.h>
     33 
     34 #ifdef	__cplusplus
     35 extern "C" {
     36 #endif
     37 
     38 typedef struct dt_strhash {
     39 	const char *str_data;		/* pointer to actual string data */
     40 	ulong_t str_buf;		/* index of string data buffer */
     41 	size_t str_off;			/* offset in bytes of this string */
     42 	size_t str_len;			/* length in bytes of this string */
     43 	struct dt_strhash *str_next;	/* next string in hash chain */
     44 } dt_strhash_t;
     45 
     46 typedef struct dt_strtab {
     47 	dt_strhash_t **str_hash;	/* array of hash buckets */
     48 	ulong_t str_hashsz;		/* size of hash bucket array */
     49 	char **str_bufs;		/* array of buffer pointers */
     50 	char *str_ptr;			/* pointer to current buffer location */
     51 	ulong_t str_nbufs;		/* size of buffer pointer array */
     52 	size_t str_bufsz;		/* size of individual buffer */
     53 	ulong_t str_nstrs;		/* total number of strings in strtab */
     54 	size_t str_size;		/* total size of strings in bytes */
     55 } dt_strtab_t;
     56 
     57 typedef ssize_t dt_strtab_write_f(const char *, size_t, size_t, void *);
     58 
     59 extern dt_strtab_t *dt_strtab_create(size_t);
     60 extern void dt_strtab_destroy(dt_strtab_t *);
     61 extern ssize_t dt_strtab_index(dt_strtab_t *, const char *);
     62 extern ssize_t dt_strtab_insert(dt_strtab_t *, const char *);
     63 extern size_t dt_strtab_size(const dt_strtab_t *);
     64 extern ssize_t dt_strtab_write(const dt_strtab_t *,
     65     dt_strtab_write_f *, void *);
     66 extern ulong_t dt_strtab_hash(const char *, size_t *);
     67 
     68 #ifdef	__cplusplus
     69 }
     70 #endif
     71 
     72 #endif	/* _DT_STRTAB_H */
     73