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/*- |
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* Copyright (c) 2009 The NetBSD Foundation, Inc. |
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* All rights reserved. |
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* |
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* This code is derived from software contributed to The NetBSD Foundation |
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* by David A. Holland. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <stdlib.h> |
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#include <string.h> |
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#define ARRAYINLINE |
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#include "array.h" |
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struct array * |
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array_create(void) |
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{ |
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struct array *a; |
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a = domalloc(sizeof(*a)); |
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array_init(a); |
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return a; |
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} |
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void |
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array_destroy(struct array *a) |
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{ |
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array_cleanup(a); |
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dofree(a, sizeof(*a)); |
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} |
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void |
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array_init(struct array *a) |
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{ |
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a->num = a->max = 0; |
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a->v = NULL; |
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} |
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void |
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array_cleanup(struct array *a) |
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{ |
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arrayassert(a->num == 0); |
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dofree(a->v, a->max * sizeof(a->v[0])); |
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#ifdef ARRAYS_CHECKED |
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a->v = NULL; |
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#endif |
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} |
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void |
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array_setsize(struct array *a, unsigned num) |
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{ |
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unsigned newmax; |
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void **newptr; |
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if (num > a->max) { |
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newmax = a->max; |
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while (num > newmax) { |
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newmax = newmax ? newmax*2 : 4; |
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} |
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newptr = dorealloc(a->v, a->max * sizeof(a->v[0]), |
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newmax * sizeof(a->v[0])); |
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a->v = newptr; |
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a->max = newmax; |
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} |
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a->num = num; |
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} |
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void |
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array_insert(struct array *a, unsigned index_) |
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{ |
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unsigned movers; |
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arrayassert(a->num <= a->max); |
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arrayassert(index_ < a->num); |
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movers = a->num - index_; |
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array_setsize(a, a->num + 1); |
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memmove(a->v + index_+1, a->v + index_, movers*sizeof(*a->v)); |
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} |
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void |
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array_remove(struct array *a, unsigned index_) |
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{ |
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unsigned movers; |
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arrayassert(a->num <= a->max); |
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arrayassert(index_ < a->num); |
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movers = a->num - (index_ + 1); |
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memmove(a->v + index_, a->v + index_+1, movers*sizeof(*a->v)); |
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a->num--; |
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} |