1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __RCSID("$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $"); 31 #include "namespace.h" 32 #include <stdio.h> 33 #include <string.h> 34 #include <err.h> 35 #include <stdlib.h> 36 #include <stringlist.h> 37 #include "un-namespace.h" 38 39 #define _SL_CHUNKSIZE 20 40 41 /* 42 * sl_init(): Initialize a string list 43 */ 44 StringList * 45 sl_init(void) 46 { 47 StringList *sl; 48 49 sl = malloc(sizeof(StringList)); 50 if (sl == NULL) 51 _err(1, "stringlist: %m"); 52 53 sl->sl_cur = 0; 54 sl->sl_max = _SL_CHUNKSIZE; 55 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 56 if (sl->sl_str == NULL) 57 _err(1, "stringlist: %m"); 58 return sl; 59 } 60 61 62 /* 63 * sl_add(): Add an item to the string list 64 */ 65 int 66 sl_add(StringList *sl, char *name) 67 { 68 if (sl->sl_cur == sl->sl_max - 1) { 69 sl->sl_max += _SL_CHUNKSIZE; 70 sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *)); 71 if (sl->sl_str == NULL) 72 return (-1); 73 } 74 sl->sl_str[sl->sl_cur++] = name; 75 return (0); 76 } 77 78 79 /* 80 * sl_free(): Free a stringlist 81 */ 82 void 83 sl_free(StringList *sl, int all) 84 { 85 size_t i; 86 87 if (sl == NULL) 88 return; 89 if (sl->sl_str) { 90 if (all) 91 for (i = 0; i < sl->sl_cur; i++) 92 free(sl->sl_str[i]); 93 free(sl->sl_str); 94 } 95 free(sl); 96 } 97 98 99 /* 100 * sl_find(): Find a name in the string list 101 */ 102 char * 103 sl_find(StringList *sl, const char *name) 104 { 105 size_t i; 106 107 for (i = 0; i < sl->sl_cur; i++) 108 if (strcmp(sl->sl_str[i], name) == 0) 109 return sl->sl_str[i]; 110 111 return NULL; 112 } 113