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Annotation of mandoc/compat_stringlist.c, Revision 1.1

1.1     ! schwarze    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: }