1 /* $NetBSD: stringlist.c,v 1.6 1999/09/16 11:45:05 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christos Zoulas 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christos Zoulas. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 #if defined(LIBC_SCCS) && !defined(lint) 36 __RCSID("$NetBSD: stringlist.c,v 1.6 1999/09/16 11:45:05 lukem Exp $"); 37 #endif /* LIBC_SCCS and not lint */ 38 39 #include "namespace.h" 40 41 #include <assert.h> 42 #include <err.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <stringlist.h> 47 48 #ifdef __weak_alias 49 __weak_alias(sl_add,_sl_add); 50 __weak_alias(sl_find,_sl_find); 51 __weak_alias(sl_free,_sl_free); 52 __weak_alias(sl_init,_sl_init); 53 #endif 54 55 #define _SL_CHUNKSIZE 20 56 57 /* 58 * sl_init(): Initialize a string list 59 */ 60 StringList * 61 sl_init() 62 { 63 StringList *sl; 64 65 sl = malloc(sizeof(StringList)); 66 if (sl == NULL) 67 err(1, "stringlist"); 68 69 sl->sl_cur = 0; 70 sl->sl_max = _SL_CHUNKSIZE; 71 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 72 if (sl->sl_str == NULL) 73 err(1, "stringlist"); 74 return sl; 75 } 76 77 78 /* 79 * sl_add(): Add an item to the string list 80 */ 81 void 82 sl_add(sl, name) 83 StringList *sl; 84 char *name; 85 { 86 87 _DIAGASSERT(sl != NULL); 88 89 if (sl->sl_cur == sl->sl_max - 1) { 90 sl->sl_max += _SL_CHUNKSIZE; 91 sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *)); 92 if (sl->sl_str == NULL) 93 err(1, "stringlist"); 94 } 95 sl->sl_str[sl->sl_cur++] = name; 96 } 97 98 99 /* 100 * sl_free(): Free a stringlist 101 */ 102 void 103 sl_free(sl, all) 104 StringList *sl; 105 int all; 106 { 107 size_t i; 108 109 if (sl == NULL) 110 return; 111 if (sl->sl_str) { 112 if (all) 113 for (i = 0; i < sl->sl_cur; i++) 114 free(sl->sl_str[i]); 115 free(sl->sl_str); 116 } 117 free(sl); 118 } 119 120 121 /* 122 * sl_find(): Find a name in the string list 123 */ 124 char * 125 sl_find(sl, name) 126 StringList *sl; 127 char *name; 128 { 129 size_t i; 130 131 _DIAGASSERT(sl != NULL); 132 133 for (i = 0; i < sl->sl_cur; i++) 134 /* 135 * XXX check sl->sl_str[i] != NULL? 136 */ 137 if (strcmp(sl->sl_str[i], name) == 0) 138 return sl->sl_str[i]; 139 140 return NULL; 141 } 142