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/* Copyright (C) 2006-2008 Artifex Software, Inc.
All Rights Reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied, modified
or distributed except as expressly authorized under the terms of that
license. Refer to licensing information at http://www.artifex.com/
or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134,
San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information.
*/
/* XPS interpreter - resource functions */
#include "ghostxps.h"
int
xps_resolve_resource_reference(xps_context_t *ctx, xps_resource_t *dict,
char **attp, xps_item_t **tagp)
{
if (*attp)
{
xps_item_t *rsrc = xps_parse_resource_reference(ctx, dict, *attp);
if (rsrc)
{
*attp = NULL;
*tagp = rsrc;
}
}
return 0;
}
xps_item_t *
xps_find_resource(xps_context_t *ctx, xps_resource_t *dict, char *name)
{
xps_resource_t *head, *node;
for (head = dict; head; head = head->parent)
for (node = head; node; node = node->next)
if (!strcmp(node->name, name))
return node->data;
return NULL;
}
xps_item_t *
xps_parse_resource_reference(xps_context_t *ctx, xps_resource_t *dict, char *att)
{
char name[1024];
char *s;
if (strstr(att, "{StaticResource ") != att)
return NULL;
strcpy(name, att + 16);
s = strrchr(name, '}');
if (s)
*s = 0;
return xps_find_resource(ctx, dict, name);
}
xps_resource_t *
xps_parse_remote_resource_dictionary(xps_context_t *ctx, char *source_att)
{
char part_name[1024];
xps_part_t *part;
xps_resource_t *dict;
xps_item_t *root;
xps_absolute_path(part_name, ctx->pwd, source_att);
part = xps_find_part(ctx, part_name);
if (!part)
{
gs_throw1(-1, "cannot find remote resource part '%s'", part_name);
return NULL;
}
root = xps_parse_xml(ctx, part->data, part->size);
if (!root)
{
gs_rethrow(-1, "cannot parse xml");
return NULL;
}
if (strcmp(xps_tag(root), "ResourceDictionary"))
{
gs_throw1(-1, "expected ResourceDictionary element (found %s)", xps_tag(root));
return NULL;
}
dict = xps_parse_resource_dictionary(ctx, root);
// TODO: xps_free_item(dict); -- need to add reference counting so dict can keep nodes
return dict;
}
xps_resource_t *
xps_parse_resource_dictionary(xps_context_t *ctx, xps_item_t *root)
{
xps_resource_t *head;
xps_resource_t *entry;
xps_item_t *node;
char *source;
char *key;
source = xps_att(root, "Source");
if (source)
return xps_parse_remote_resource_dictionary(ctx, source);
head = NULL;
for (node = xps_down(root); node; node = xps_next(node))
{
/* Usually "x:Key"; we have already processed and stripped namespace */
key = xps_att(node, "Key");
if (key)
{
entry = xps_alloc(ctx, sizeof(xps_resource_t));
if (!entry)
{
gs_throw(-1, "cannot allocate resource entry");
return head;
}
entry->name = key;
entry->data = node;
entry->next = head;
entry->parent = NULL;
head = entry;
}
}
return head;
}
void xps_free_resource_dictionary(xps_context_t *ctx, xps_resource_t *dict)
{
xps_resource_t *next;
while (dict)
{
next = dict->next;
xps_free(ctx, dict);
dict = next;
}
}
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