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#include "fitz.h"
#include "muxps.h"
static xml_element *
xps_find_resource(xps_context *ctx, 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 xml_element *
xps_parse_resource_reference(xps_context *ctx, 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_find_resource(ctx, dict, name, urip);
}
void
xps_resolve_resource_reference(xps_context *ctx, xps_resource *dict,
char **attp, xml_element **tagp, char **urip)
{
if (*attp)
{
xml_element *rsrc = xps_parse_resource_reference(ctx, dict, *attp, urip);
if (rsrc)
{
*attp = NULL;
*tagp = rsrc;
}
}
}
static int
xps_parse_remote_resource_dictionary(xps_context *ctx, xps_resource **dictp, char *base_uri, char *source_att)
{
char part_name[1024];
char part_uri[1024];
xps_resource *dict;
xps_part *part;
xml_element *xml;
char *s;
int code;
/* External resource dictionaries MUST NOT reference other resource dictionaries */
xps_absolute_path(part_name, base_uri, source_att, sizeof part_name);
part = xps_read_part(ctx, part_name);
if (!part)
{
return fz_error_make("cannot find remote resource part '%s'", part_name);
}
xml = xml_parse_document(part->data, part->size);
if (!xml)
{
xps_free_part(ctx, part);
return fz_error_note(-1, "cannot parse xml");
}
if (strcmp(xml_tag(xml), "ResourceDictionary"))
{
xml_free_element(xml);
xps_free_part(ctx, part);
return fz_error_make("expected ResourceDictionary element (found %s)", xml_tag(xml));
}
fz_strlcpy(part_uri, part_name, sizeof part_uri);
s = strrchr(part_uri, '/');
if (s)
s[1] = 0;
code = xps_parse_resource_dictionary(ctx, &dict, part_uri, xml);
if (code)
{
xml_free_element(xml);
xps_free_part(ctx, part);
return fz_error_note(code, "cannot parse remote resource dictionary: %s", part_uri);
}
dict->base_xml = xml; /* pass on ownership */
xps_free_part(ctx, part);
*dictp = dict;
return fz_okay;
}
int
xps_parse_resource_dictionary(xps_context *ctx, xps_resource **dictp, char *base_uri, xml_element *root)
{
xps_resource *head;
xps_resource *entry;
xml_element *node;
char *source;
char *key;
int code;
source = xml_att(root, "Source");
if (source)
{
code = xps_parse_remote_resource_dictionary(ctx, dictp, base_uri, source);
if (code)
return fz_error_note(code, "cannot parse remote resource dictionary");
return fz_okay;
}
head = NULL;
for (node = xml_down(root); node; node = xml_next(node))
{
key = xml_att(node, "x:Key");
if (key)
{
entry = fz_malloc(sizeof(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(base_uri);
else
return fz_throw("empty resource dictionary");
*dictp = head;
return fz_okay;
}
void
xps_free_resource_dictionary(xps_context *ctx, xps_resource *dict)
{
xps_resource *next;
while (dict)
{
next = dict->next;
if (dict->base_xml)
xml_free_element(dict->base_xml);
if (dict->base_uri)
fz_free(dict->base_uri);
fz_free(dict);
dict = next;
}
}
void
xps_debug_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_debug_resource_dictionary(dict->parent);
printf("}\n");
}
dict = dict->next;
}
}
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