114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
/*
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* fragment.c
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* Management of fragment lists.
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*
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* Copyright (c) 2012 William Pitcock <nenolod@dereferenced.org>.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* 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 "pkg.h"
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#include "bsdstubs.h"
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pkg_fragment_t *
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pkg_fragment_append(pkg_fragment_t *head, pkg_fragment_t *tail)
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{
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pkg_fragment_t *node;
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if (head == NULL)
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return tail;
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/* skip to end of list */
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foreach_list_entry(head, node)
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{
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if (node->next == NULL)
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break;
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}
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node->next = tail;
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tail->prev = node;
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return head;
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}
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pkg_fragment_t *
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pkg_fragment_add(pkg_fragment_t *head, const char *string)
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{
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pkg_fragment_t *frag;
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frag = calloc(sizeof(pkg_fragment_t), 1);
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if (*string == '-' && strncmp(string, "-lib:", 5))
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{
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frag->type = *(string + 1);
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frag->data = strdup(string + 2);
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}
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else
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{
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frag->type = 0;
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frag->data = strdup(string);
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}
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return pkg_fragment_append(head, frag);
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}
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bool
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pkg_fragment_exists(pkg_fragment_t *head, pkg_fragment_t *base)
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{
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pkg_fragment_t *node;
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foreach_list_entry(head, node)
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{
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if (base->type != node->type)
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continue;
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if (!strcmp(base->data, node->data))
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return true;
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}
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return false;
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}
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pkg_fragment_t *
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pkg_fragment_copy(pkg_fragment_t *head, pkg_fragment_t *base)
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{
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pkg_fragment_t *frag;
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if (pkg_fragment_exists(head, base))
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return head;
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frag = calloc(sizeof(pkg_fragment_t), 1);
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frag->type = base->type;
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frag->data = strdup(base->data);
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return pkg_fragment_append(head, frag);
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}
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void
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pkg_fragment_delete(pkg_fragment_t *node)
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{
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if (node->prev != NULL)
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node->prev->next = node->next;
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if (node->next != NULL)
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node->next->prev = node->prev;
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free(node->data);
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free(node);
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}
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