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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 15 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #if defined(LIBC_SCCS) && !defined(lint) 28 static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $"; 29 #endif /* LIBC_SCCS and not lint */ 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "namespace.h" 34 #include <stdio.h> 35 #include <string.h> 36 #include <err.h> 37 #include <stdlib.h> 38 #include <stringlist.h> 39 #include "un-namespace.h" 40 41 #define _SL_CHUNKSIZE 20 42 43 /* 44 * sl_init(): Initialize a string list 45 */ 46 StringList * 47 sl_init(void) 48 { 49 StringList *sl; 50 51 sl = malloc(sizeof(StringList)); 52 if (sl == NULL) 53 _err(1, "stringlist: %m"); 54 55 sl->sl_cur = 0; 56 sl->sl_max = _SL_CHUNKSIZE; 57 sl->sl_str = malloc(sl->sl_max * sizeof(char *)); 58 if (sl->sl_str == NULL) 59 _err(1, "stringlist: %m"); 60 return sl; 61 } 62 63 64 /* 65 * sl_add(): Add an item to the string list 66 */ 67 int 68 sl_add(StringList *sl, char *name) 69 { 70 if (sl->sl_cur == sl->sl_max - 1) { 71 sl->sl_max += _SL_CHUNKSIZE; 72 sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *)); 73 if (sl->sl_str == NULL) 74 return (-1); 75 } 76 sl->sl_str[sl->sl_cur++] = name; 77 return (0); 78 } 79 80 81 /* 82 * sl_free(): Free a stringlist 83 */ 84 void 85 sl_free(StringList *sl, int all) 86 { 87 size_t i; 88 89 if (sl == NULL) 90 return; 91 if (sl->sl_str) { 92 if (all) 93 for (i = 0; i < sl->sl_cur; i++) 94 free(sl->sl_str[i]); 95 free(sl->sl_str); 96 } 97 free(sl); 98 } 99 100 101 /* 102 * sl_find(): Find a name in the string list 103 */ 104 char * 105 sl_find(StringList *sl, const char *name) 106 { 107 size_t i; 108 109 for (i = 0; i < sl->sl_cur; i++) 110 if (strcmp(sl->sl_str[i], name) == 0) 111 return sl->sl_str[i]; 112 113 return NULL; 114 } 115