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Annotation of src/usr.bin/ftp/stringlist.c, Revision 1.9

1.9     ! deraadt     1: /*     $OpenBSD: stringlist.c,v 1.8 2007/09/02 15:19:32 deraadt Exp $  */
1.1       millert     2: /*     $NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $     */
                      3:
                      4: /*
                      5:  * Copyright (c) 1994 Christos Zoulas
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by Christos Zoulas.
                     19:  * 4. The name of the author may not be used to endorse or promote products
                     20:  *    derived from this software without specific prior written permission.
                     21:  *
                     22:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
                     23:  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
                     24:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     25:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
                     26:  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     27:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     28:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     29:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     30:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     31:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     32:  * SUCH DAMAGE.
                     33:  */
                     34:
                     35: #include <stdio.h>
                     36: #include <string.h>
                     37: #include <err.h>
                     38: #include <stdlib.h>
                     39:
                     40: #include "stringlist.h"
                     41:
                     42: #define _SL_CHUNKSIZE  20
                     43:
                     44: /*
                     45:  * sl_init(): Initialize a string list
                     46:  */
                     47: StringList *
1.5       deraadt    48: sl_init(void)
1.1       millert    49: {
                     50:        StringList *sl = malloc(sizeof(StringList));
                     51:        if (sl == NULL)
1.3       deraadt    52:                err(1, "stringlist");
1.1       millert    53:
                     54:        sl->sl_cur = 0;
                     55:        sl->sl_max = _SL_CHUNKSIZE;
1.8       deraadt    56:        sl->sl_str = calloc(sl->sl_max, sizeof(char *));
1.1       millert    57:        if (sl->sl_str == NULL)
1.3       deraadt    58:                err(1, "stringlist");
1.1       millert    59:        return sl;
                     60: }
                     61:
                     62:
                     63: /*
                     64:  * sl_add(): Add an item to the string list
                     65:  */
                     66: void
1.5       deraadt    67: sl_add(StringList *sl, char *name)
1.1       millert    68: {
                     69:        if (sl->sl_cur == sl->sl_max - 1) {
                     70:                sl->sl_max += _SL_CHUNKSIZE;
                     71:                sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *));
                     72:                if (sl->sl_str == NULL)
1.3       deraadt    73:                        err(1, "stringlist");
1.1       millert    74:        }
                     75:        sl->sl_str[sl->sl_cur++] = name;
                     76: }
                     77:
                     78:
                     79: /*
                     80:  * sl_free(): Free a stringlist
                     81:  */
                     82: void
1.5       deraadt    83: sl_free(StringList *sl, int all)
1.1       millert    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: }