1 /* $NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 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 * $NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $ 34 */ 35 36 #include <stdio.h> 37 #include <string.h> 38 #include <err.h> 39 #include <stdlib.h> 40 #include <stringlist.h> 41 42 #define _SL_CHUNKSIZE 20 43 44 /* 45 * sl_init(): Initialize a string list 46 */ 47 StringList * 48 sl_init() 49 { 50 StringList *sl = malloc(sizeof(StringList)); 51 if (sl == NULL) 52 err(1, "stringlist: %m"); 53 54 sl->sl_cur = 0; 55 sl->sl_max = _SL_CHUNKSIZE; 56 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 57 if (sl->sl_str == NULL) 58 err(1, "stringlist: %m"); 59 return sl; 60 } 61 62 63 /* 64 * sl_add(): Add an item to the string list 65 */ 66 void 67 sl_add(sl, name) 68 StringList *sl; 69 char *name; 70 { 71 if (sl->sl_cur == sl->sl_max - 1) { 72 sl->sl_max += _SL_CHUNKSIZE; 73 sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *)); 74 if (sl->sl_str == NULL) 75 err(1, "stringlist: %m"); 76 } 77 sl->sl_str[sl->sl_cur++] = name; 78 } 79 80 81 /* 82 * sl_free(): Free a stringlist 83 */ 84 void 85 sl_free(sl, all) 86 StringList *sl; 87 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 } 101 102 103 /* 104 * sl_find(): Find a name in the string list 105 */ 106 char * 107 sl_find(sl, name) 108 StringList *sl; 109 char *name; 110 { 111 size_t i; 112 113 for (i = 0; i < sl->sl_cur; i++) 114 if (strcmp(sl->sl_str[i], name) == 0) 115 return sl->sl_str[i]; 116 117 return NULL; 118 } 119