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#include "mupdf/xps.h"
static fz_xml *
xps_lookup_resource(xps_document *doc, xps_resource *dict, char *name, char **urip)
{
xps_resource *head, *node;
for (head = dict; head; head = head->parent)
{
for (node = head; node; node = node->next)
{
if (!strcmp(node->name, name))
{
if (urip && head->base_uri)
*urip = head->base_uri;
return node->data;
}
}
}
return NULL;
}
static fz_xml *
xps_parse_resource_reference(xps_document *doc, xps_resource *dict, char *att, char **urip)
{
char name[1024];
char *s;
if (strstr(att, "{StaticResource ") != att)
return NULL;
fz_strlcpy(name, att + 16, sizeof name);
s = strrchr(name, '}');
if (s)
*s = 0;
return xps_lookup_resource(doc, dict, name, urip);
}
void
xps_resolve_resource_reference(xps_document *doc, xps_resource *dict,
char **attp, fz_xml **tagp, char **urip)
{
if (*attp)
{
fz_xml *rsrc = xps_parse_resource_reference(doc, dict, *attp, urip);
if (rsrc)
{
*attp = NULL;
*tagp = rsrc;
}
}
}
static xps_resource *
xps_parse_remote_resource_dictionary(xps_document *doc, char *base_uri, char *source_att)
{
char part_name[1024];
char part_uri[1024];
xps_resource *dict;
xps_part *part;
fz_xml *xml;
char *s;
fz_context *ctx = doc->ctx;
/* External resource dictionaries MUST NOT reference other resource dictionaries */
xps_resolve_url(part_name, base_uri, source_att, sizeof part_name);
part = xps_read_part(doc, part_name);
fz_try(ctx)
{
xml = fz_parse_xml(doc->ctx, part->data, part->size);
}
fz_always(ctx)
{
xps_free_part(doc, part);
}
fz_catch(ctx)
{
fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
xml = NULL;
}
if (!xml)
return NULL;
if (strcmp(fz_xml_tag(xml), "ResourceDictionary"))
{
fz_free_xml(doc->ctx, xml);
fz_throw(doc->ctx, FZ_ERROR_GENERIC, "expected ResourceDictionary element");
}
fz_strlcpy(part_uri, part_name, sizeof part_uri);
s = strrchr(part_uri, '/');
if (s)
s[1] = 0;
dict = xps_parse_resource_dictionary(doc, part_uri, xml);
if (dict)
dict->base_xml = xml; /* pass on ownership */
return dict;
}
xps_resource *
xps_parse_resource_dictionary(xps_document *doc, char *base_uri, fz_xml *root)
{
xps_resource *head;
xps_resource *entry;
fz_xml *node;
char *source;
char *key;
source = fz_xml_att(root, "Source");
if (source)
return xps_parse_remote_resource_dictionary(doc, base_uri, source);
head = NULL;
for (node = fz_xml_down(root); node; node = fz_xml_next(node))
{
key = fz_xml_att(node, "x:Key");
if (key)
{
entry = fz_malloc_struct(doc->ctx, xps_resource);
entry->name = key;
entry->base_uri = NULL;
entry->base_xml = NULL;
entry->data = node;
entry->next = head;
entry->parent = NULL;
head = entry;
}
}
if (head)
head->base_uri = fz_strdup(doc->ctx, base_uri);
return head;
}
void
xps_free_resource_dictionary(xps_document *doc, xps_resource *dict)
{
xps_resource *next;
while (dict)
{
next = dict->next;
if (dict->base_xml)
fz_free_xml(doc->ctx, dict->base_xml);
if (dict->base_uri)
fz_free(doc->ctx, dict->base_uri);
fz_free(doc->ctx, dict);
dict = next;
}
}
void
xps_print_resource_dictionary(xps_resource *dict)
{
while (dict)
{
if (dict->base_uri)
printf("URI = '%s'\n", dict->base_uri);
printf("KEY = '%s' VAL = %p\n", dict->name, dict->data);
if (dict->parent)
{
printf("PARENT = {\n");
xps_print_resource_dictionary(dict->parent);
printf("}\n");
}
dict = dict->next;
}
}
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