1 /* 2 * Copyright (c) 1994 Christos Zoulas 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Christos Zoulas. 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #if defined(LIBC_SCCS) && !defined(lint) 33 static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $"; 34 #endif /* LIBC_SCCS and not lint */ 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <stdio.h> 39 #include <string.h> 40 #include <err.h> 41 #include <stdlib.h> 42 #include <stringlist.h> 43 44 #define _SL_CHUNKSIZE 20 45 46 /* 47 * sl_init(): Initialize a string list 48 */ 49 StringList * 50 sl_init() 51 { 52 StringList *sl = malloc(sizeof(StringList)); 53 if (sl == NULL) 54 _err(1, "stringlist: %m"); 55 56 sl->sl_cur = 0; 57 sl->sl_max = _SL_CHUNKSIZE; 58 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 59 if (sl->sl_str == NULL) 60 _err(1, "stringlist: %m"); 61 return sl; 62 } 63 64 65 /* 66 * sl_add(): Add an item to the string list 67 */ 68 void 69 sl_add(sl, name) 70 StringList *sl; 71 char *name; 72 { 73 if (sl->sl_cur == sl->sl_max - 1) { 74 sl->sl_max += _SL_CHUNKSIZE; 75 sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *)); 76 if (sl->sl_str == NULL) 77 _err(1, "stringlist: %m"); 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(sl, all) 88 StringList *sl; 89 int all; 90 { 91 size_t i; 92 93 if (sl == NULL) 94 return; 95 if (sl->sl_str) { 96 if (all) 97 for (i = 0; i < sl->sl_cur; i++) 98 free(sl->sl_str[i]); 99 free(sl->sl_str); 100 } 101 free(sl); 102 } 103 104 105 /* 106 * sl_find(): Find a name in the string list 107 */ 108 char * 109 sl_find(sl, name) 110 StringList *sl; 111 char *name; 112 { 113 size_t i; 114 115 for (i = 0; i < sl->sl_cur; i++) 116 if (strcmp(sl->sl_str[i], name) == 0) 117 return sl->sl_str[i]; 118 119 return NULL; 120 } 121