1 /* $NetBSD: stringlist.c,v 1.3 1997/07/13 19:31:49 christos 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 1.3 1997/07/13 19:31:49 christos 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 #define _SL_CHUNKSIZE 20 47 48 /* 49 * sl_init(): Initialize a string list 50 */ 51 StringList * 52 sl_init() 53 { 54 StringList *sl = malloc(sizeof(StringList)); 55 if (sl == NULL) 56 err(1, "stringlist: %m"); 57 58 sl->sl_cur = 0; 59 sl->sl_max = _SL_CHUNKSIZE; 60 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 61 if (sl->sl_str == NULL) 62 err(1, "stringlist: %m"); 63 return sl; 64 } 65 66 67 /* 68 * sl_add(): Add an item to the string list 69 */ 70 void 71 sl_add(sl, name) 72 StringList *sl; 73 char *name; 74 { 75 if (sl->sl_cur == sl->sl_max - 1) { 76 sl->sl_max += _SL_CHUNKSIZE; 77 sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *)); 78 if (sl->sl_str == NULL) 79 err(1, "stringlist: %m"); 80 } 81 sl->sl_str[sl->sl_cur++] = name; 82 } 83 84 85 /* 86 * sl_free(): Free a stringlist 87 */ 88 void 89 sl_free(sl, all) 90 StringList *sl; 91 int all; 92 { 93 size_t i; 94 95 if (sl == NULL) 96 return; 97 if (sl->sl_str) { 98 if (all) 99 for (i = 0; i < sl->sl_cur; i++) 100 free(sl->sl_str[i]); 101 free(sl->sl_str); 102 } 103 free(sl); 104 } 105 106 107 /* 108 * sl_find(): Find a name in the string list 109 */ 110 char * 111 sl_find(sl, name) 112 StringList *sl; 113 char *name; 114 { 115 size_t i; 116 117 for (i = 0; i < sl->sl_cur; i++) 118 if (strcmp(sl->sl_str[i], name) == 0) 119 return sl->sl_str[i]; 120 121 return NULL; 122 } 123