forked from ariadne/pkgconf
144 lines
2.7 KiB
C
144 lines
2.7 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 pkgconf authors (see AUTHORS).
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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 'as is' and without any warranty, express or
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* implied. In no event shall the authors be liable for any damages arising
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* from the use of this software.
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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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PKG_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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static inline pkg_fragment_t *
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pkg_fragment_lookup(pkg_fragment_t *head, pkg_fragment_t *base)
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{
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pkg_fragment_t *node;
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PKG_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 node;
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}
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return NULL;
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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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return pkg_fragment_lookup(head, base) != NULL;
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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 ((frag = pkg_fragment_lookup(head, base)) != NULL)
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{
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if (head == frag)
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head = frag->next;
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pkg_fragment_delete(frag);
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}
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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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void
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pkg_fragment_free(pkg_fragment_t *head)
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{
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pkg_fragment_t *node, *next;
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PKG_FOREACH_LIST_ENTRY_SAFE(head, next, node)
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pkg_fragment_delete(node);
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}
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pkg_fragment_t *
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pkg_fragment_parse(pkg_fragment_t *head, pkg_tuple_t *vars, const char *value)
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{
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int i, argc;
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char **argv;
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char *repstr = pkg_tuple_parse(vars, value);
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pkg_argv_split(repstr, &argc, &argv);
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for (i = 0; i < argc; i++)
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head = pkg_fragment_add(head, argv[i]);
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pkg_argv_free(argv);
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free(repstr);
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return head;
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}
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