1 /* $OpenBSD: stringlist.c,v 1.8 2007/09/02 15:19:32 deraadt Exp $ */ 2 /* $NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $ */ 3 4 /* 5 * Copyright (c) 1994 Christos Zoulas 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christos Zoulas. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 26 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #if defined(LIBC_SCCS) && !defined(lint) && !defined(SMALL) 36 static const char rcsid[] = "$OpenBSD: stringlist.c,v 1.8 2007/09/02 15:19:32 deraadt Exp $"; 37 #endif /* LIBC_SCCS and not lint and not SMALL */ 38 39 #include <stdio.h> 40 #include <string.h> 41 #include <err.h> 42 #include <stdlib.h> 43 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(void) 53 { 54 StringList *sl = malloc(sizeof(StringList)); 55 if (sl == NULL) 56 err(1, "stringlist"); 57 58 sl->sl_cur = 0; 59 sl->sl_max = _SL_CHUNKSIZE; 60 sl->sl_str = calloc(sl->sl_max, sizeof(char *)); 61 if (sl->sl_str == NULL) 62 err(1, "stringlist"); 63 return sl; 64 } 65 66 67 /* 68 * sl_add(): Add an item to the string list 69 */ 70 void 71 sl_add(StringList *sl, char *name) 72 { 73 if (sl->sl_cur == sl->sl_max - 1) { 74 sl->sl_max += _SL_CHUNKSIZE; 75 sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *)); 76 if (sl->sl_str == NULL) 77 err(1, "stringlist"); 78 } 79 sl->sl_str[sl->sl_cur++] = name; 80 } 81 82 83 /* 84 * sl_free(): Free a stringlist 85 */ 86 void 87 sl_free(StringList *sl, int all) 88 { 89 size_t i; 90 91 if (sl == NULL) 92 return; 93 if (sl->sl_str) { 94 if (all) 95 for (i = 0; i < sl->sl_cur; i++) 96 free(sl->sl_str[i]); 97 free(sl->sl_str); 98 } 99 free(sl); 100 } 101