pkgconf/fragment.c

94 lines
2.2 KiB
C

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