1 /* $NetBSD: stringlist.c,v 1.5 1997/09/29 06:52:40 enami 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 1.5 1997/09/29 06:52:40 enami Exp $"); 37 #endif /* LIBC_SCCS and not lint */ 38 39 #include "namespace.h" 40 #include <stdio.h> 41 #include <string.h> 42 #include <err.h> 43 #include <stdlib.h> 44 #include <stringlist.h> 45 46 #ifdef __weak_alias 47 __weak_alias(sl_add,_sl_add); 48 __weak_alias(sl_find,_sl_find); 49 __weak_alias(sl_free,_sl_free); 50 __weak_alias(sl_init,_sl_init); 51 #endif 52 53 #define _SL_CHUNKSIZE 20 54 55 /* 56 * sl_init(): Initialize a string list 57 */ 58 StringList * 59 sl_init() 60 { 61 StringList *sl = malloc(sizeof(StringList)); 62 if (sl == NULL) 63 err(1, "stringlist"); 64 65 sl->sl_cur = 0; 66 sl->sl_max = _SL_CHUNKSIZE; 67 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 68 if (sl->sl_str == NULL) 69 err(1, "stringlist"); 70 return sl; 71 } 72 73 74 /* 75 * sl_add(): Add an item to the string list 76 */ 77 void 78 sl_add(sl, name) 79 StringList *sl; 80 char *name; 81 { 82 if (sl->sl_cur == sl->sl_max - 1) { 83 sl->sl_max += _SL_CHUNKSIZE; 84 sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *)); 85 if (sl->sl_str == NULL) 86 err(1, "stringlist"); 87 } 88 sl->sl_str[sl->sl_cur++] = name; 89 } 90 91 92 /* 93 * sl_free(): Free a stringlist 94 */ 95 void 96 sl_free(sl, all) 97 StringList *sl; 98 int all; 99 { 100 size_t i; 101 102 if (sl == NULL) 103 return; 104 if (sl->sl_str) { 105 if (all) 106 for (i = 0; i < sl->sl_cur; i++) 107 free(sl->sl_str[i]); 108 free(sl->sl_str); 109 } 110 free(sl); 111 } 112 113 114 /* 115 * sl_find(): Find a name in the string list 116 */ 117 char * 118 sl_find(sl, name) 119 StringList *sl; 120 char *name; 121 { 122 size_t i; 123 124 for (i = 0; i < sl->sl_cur; i++) 125 if (strcmp(sl->sl_str[i], name) == 0) 126 return sl->sl_str[i]; 127 128 return NULL; 129 } 130