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#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))
{
key = xps_att(node, "x: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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