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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <libintl.h> 30 #include <string.h> 31 #include <stdlib.h> 32 #include <libuutil.h> 33 34 #include "idtab.h" 35 36 #define IDTAB_GROW 2 /* Table size multiplier on grow */ 37 #define IDTAB_DEFSIZE 16 /* Starting table size */ 38 39 void 40 idtab_create(idtab_t *idt) 41 { 42 (void) memset(idt, 0, sizeof (idtab_t)); 43 } 44 45 void 46 idtab_destroy(idtab_t *idt) 47 { 48 if (idt->id_data) { 49 free(idt->id_data); 50 idt->id_data = NULL; 51 idt->id_nelems = idt->id_size = 0; 52 } 53 } 54 55 void 56 idtab_append(idtab_t *idt, idkey_t id) 57 { 58 size_t size; 59 void *data; 60 61 if (idt->id_nelems >= idt->id_size) { 62 size = idt->id_size ? idt->id_size * IDTAB_GROW : IDTAB_DEFSIZE; 63 64 if (data = realloc(idt->id_data, sizeof (idkey_t) * size)) { 65 idt->id_data = data; 66 idt->id_size = size; 67 } else { 68 uu_die(gettext("Failed to grow table")); 69 } 70 } 71 72 idt->id_data[idt->id_nelems++] = id; 73 } 74 75 static int 76 idtab_compare(const void *lhsp, const void *rhsp) 77 { 78 idkey_t lhs = *((idkey_t *)lhsp); 79 idkey_t rhs = *((idkey_t *)rhsp); 80 81 if (lhs == rhs) 82 return (0); 83 84 return (lhs > rhs ? 1 : -1); 85 } 86 87 void 88 idtab_sort(idtab_t *idt) 89 { 90 if (idt->id_data) { 91 qsort(idt->id_data, idt->id_nelems, 92 sizeof (idkey_t), idtab_compare); 93 } 94 } 95 96 int 97 idtab_search(idtab_t *idt, idkey_t id) 98 { 99 return (bsearch(&id, idt->id_data, idt->id_nelems, 100 sizeof (idkey_t), idtab_compare) != NULL); 101 } 102