forked from ariadne/pkgconf
119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
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/*
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* tuple.c
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* management of key->value tuples
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*
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* Copyright (c) 2011, 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_tuple_t *
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pkg_tuple_add(pkg_tuple_t *parent, const char *key, const char *value)
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{
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pkg_tuple_t *tuple = calloc(sizeof(pkg_tuple_t), 1);
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tuple->key = strdup(key);
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tuple->value = pkg_tuple_parse(parent, value);
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tuple->next = parent;
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if (tuple->next != NULL)
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tuple->next->prev = tuple;
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return tuple;
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}
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char *
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pkg_tuple_find(pkg_tuple_t *head, const char *key)
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{
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pkg_tuple_t *node;
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foreach_list_entry(head, node)
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{
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if (!strcasecmp(node->key, key))
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return node->value;
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}
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return NULL;
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}
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char *
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pkg_tuple_parse(pkg_tuple_t *vars, const char *value)
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{
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char buf[BUFSIZ];
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const char *ptr;
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char *bptr = buf;
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for (ptr = value; *ptr != '\0' && bptr - buf < BUFSIZ; ptr++)
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{
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if (*ptr != '$')
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*bptr++ = *ptr;
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else if (*(ptr + 1) == '{')
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{
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static char varname[BUFSIZ];
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char *vptr = varname;
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const char *pptr;
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char *kv, *parsekv;
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*vptr = '\0';
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for (pptr = ptr + 2; *pptr != '\0'; pptr++)
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{
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if (*pptr != '}')
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*vptr++ = *pptr;
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else
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{
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*vptr = '\0';
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break;
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}
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}
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ptr += (pptr - ptr);
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kv = pkg_tuple_find(vars, varname);
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if (kv != NULL)
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{
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parsekv = pkg_tuple_parse(vars, kv);
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strncpy(bptr, parsekv, BUFSIZ - (bptr - buf));
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bptr += strlen(parsekv);
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free(parsekv);
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}
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}
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}
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*bptr = '\0';
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return strdup(buf);
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}
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void
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pkg_tuple_free(pkg_tuple_t *head)
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{
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pkg_tuple_t *node, *next;
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foreach_list_entry_safe(head, next, node)
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{
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free(node->key);
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free(node->value);
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free(node);
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}
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}
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