PosixLib/Stringlist/stringlist.c

4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*  $NetBSD: stringlist.c,v 1.13 2008/04/28 20:22:59 martin Exp $
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1994, 1999 The NetBSD Foundation, Inc.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * This code is derived from software contributed to The NetBSD Foundation
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * by Christos Zoulas.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * are met:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *    documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * POSSIBILITY OF SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(_MSC_VER)           /* Handle Microsoft VC++ compiler specifics. */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  #pragma warning ( disable : 4018 )
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/cdefs.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(LIBC_SCCS) && !defined(lint)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__RCSID("$NetBSD: stringlist.c,v 1.13 2008/04/28 20:22:59 martin Exp $");
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* LIBC_SCCS and not lint */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <assert.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <stdio.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <stdlib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <string.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <stringlist.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifdef __weak_alias
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__weak_alias(sl_add,_sl_add)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__weak_alias(sl_find,_sl_find)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__weak_alias(sl_free,_sl_free)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__weak_alias(sl_init,_sl_init)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__weak_alias(sl_delete,_sl_delete)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _SL_CHUNKSIZE 20
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * sl_init(): Initialize a string list
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncStringList *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncsl_init(void)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  StringList *sl;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  sl = malloc(sizeof(StringList));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  if (sl == NULL)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    return NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  sl->sl_cur = 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  sl->sl_max = _SL_CHUNKSIZE;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  sl->sl_str = malloc(sl->sl_max * sizeof(char *));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  if (sl->sl_str == NULL) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    free(sl);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    sl = NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  return sl;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * sl_add(): Add an item to the string list
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncint
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncsl_add(StringList *sl, char *name)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  _DIAGASSERT(sl != NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  if (sl->sl_cur == sl->sl_max - 1) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    char  **new;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    new = realloc(sl->sl_str,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync        (sl->sl_max + _SL_CHUNKSIZE) * sizeof(char *));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    if (new == NULL)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync      return -1;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    sl->sl_max += _SL_CHUNKSIZE;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    sl->sl_str = new;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  sl->sl_str[sl->sl_cur++] = name;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  return 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * sl_free(): Free a stringlist
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncvoid
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncsl_free(StringList *sl, int all)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  size_t i;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  if (sl == NULL)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    return;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  if (sl->sl_str) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    if (all)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync      for (i = 0; i < sl->sl_cur; i++)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync        free(sl->sl_str[i]);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    free(sl->sl_str);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  free(sl);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/*
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * sl_find(): Find a name in the string list
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncchar *
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncsl_find(StringList *sl, const char *name)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  size_t i;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  _DIAGASSERT(sl != NULL);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  for (i = 0; i < sl->sl_cur; i++)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    if (strcmp(sl->sl_str[i], name) == 0)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync      return sl->sl_str[i];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  return NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncint
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncsl_delete(StringList *sl, const char *name, int all)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  size_t i, j;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  for (i = 0; i < sl->sl_cur; i++)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    if (strcmp(sl->sl_str[i], name) == 0) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync      if (all)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync        free(sl->sl_str[i]);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync      for (j = i + 1; j < sl->sl_cur; j++)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync        sl->sl_str[j - 1] = sl->sl_str[j];
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync      sl->sl_str[--sl->sl_cur] = NULL;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync      return 0;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync    }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync  return -1;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync