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 * 4. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 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 #if defined(LIBC_SCCS) && !defined(lint) 30 static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $"; 31 #endif /* LIBC_SCCS and not lint */ 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include "namespace.h" 36 #include <stdio.h> 37 #include <string.h> 38 #include <err.h> 39 #include <stdlib.h> 40 #include <stringlist.h> 41 #include "un-namespace.h" 42 43 #define _SL_CHUNKSIZE 20 44 45 /* 46 * sl_init(): Initialize a string list 47 */ 48 StringList * 49 sl_init(void) 50 { 51 StringList *sl; 52 53 sl = malloc(sizeof(StringList)); 54 if (sl == NULL) 55 _err(1, "stringlist: %m"); 56 57 sl->sl_cur = 0; 58 sl->sl_max = _SL_CHUNKSIZE; 59 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 60 if (sl->sl_str == NULL) 61 _err(1, "stringlist: %m"); 62 return sl; 63 } 64 65 66 /* 67 * sl_add(): Add an item to the string list 68 */ 69 int 70 sl_add(StringList *sl, char *name) 71 { 72 if (sl->sl_cur == sl->sl_max - 1) { 73 sl->sl_max += _SL_CHUNKSIZE; 74 sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *)); 75 if (sl->sl_str == NULL) 76 return (-1); 77 } 78 sl->sl_str[sl->sl_cur++] = name; 79 return (0); 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 } 101 102 103 /* 104 * sl_find(): Find a name in the string list 105 */ 106 char * 107 sl_find(StringList *sl, const char *name) 108 { 109 size_t i; 110 111 for (i = 0; i < sl->sl_cur; i++) 112 if (strcmp(sl->sl_str[i], name) == 0) 113 return sl->sl_str[i]; 114 115 return NULL; 116 } 117