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Annotation of src/usr.bin/ftp/stringlist.c, Revision 1.8

1.8     ! deraadt     1: /*     $OpenBSD: stringlist.c,v 1.7 2006/04/25 05:45:20 tedu 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:
1.4       deraadt    35: #if defined(LIBC_SCCS) && !defined(lint) && !defined(SMALL)
1.8     ! deraadt    36: static const char rcsid[] = "$OpenBSD: stringlist.c,v 1.7 2006/04/25 05:45:20 tedu Exp $";
1.4       deraadt    37: #endif /* LIBC_SCCS and not lint and not SMALL */
1.1       millert    38:
                     39: #include <stdio.h>
                     40: #include <string.h>
                     41: #include <err.h>
                     42: #include <stdlib.h>
                     43:
                     44: #include "stringlist.h"
                     45:
                     46: #define _SL_CHUNKSIZE  20
                     47:
                     48: /*
                     49:  * sl_init(): Initialize a string list
                     50:  */
                     51: StringList *
1.5       deraadt    52: sl_init(void)
1.1       millert    53: {
                     54:        StringList *sl = malloc(sizeof(StringList));
                     55:        if (sl == NULL)
1.3       deraadt    56:                err(1, "stringlist");
1.1       millert    57:
                     58:        sl->sl_cur = 0;
                     59:        sl->sl_max = _SL_CHUNKSIZE;
1.8     ! deraadt    60:        sl->sl_str = calloc(sl->sl_max, sizeof(char *));
1.1       millert    61:        if (sl->sl_str == NULL)
1.3       deraadt    62:                err(1, "stringlist");
1.1       millert    63:        return sl;
                     64: }
                     65:
                     66:
                     67: /*
                     68:  * sl_add(): Add an item to the string list
                     69:  */
                     70: void
1.5       deraadt    71: sl_add(StringList *sl, char *name)
1.1       millert    72: {
                     73:        if (sl->sl_cur == sl->sl_max - 1) {
                     74:                sl->sl_max += _SL_CHUNKSIZE;
                     75:                sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *));
                     76:                if (sl->sl_str == NULL)
1.3       deraadt    77:                        err(1, "stringlist");
1.1       millert    78:        }
                     79:        sl->sl_str[sl->sl_cur++] = name;
                     80: }
                     81:
                     82:
                     83: /*
                     84:  * sl_free(): Free a stringlist
                     85:  */
                     86: void
1.5       deraadt    87: sl_free(StringList *sl, int all)
1.1       millert    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: }