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#include "muxps-internal.h"
/*
* Parse the document structure / outline parts referenced from fixdoc relationships.
*/
static fz_outline *
xps_find_last_outline_at_level(fz_outline *node, int level, int target_level)
{
while (node->next)
node = node->next;
if (level == target_level || !node->down)
return node;
return xps_find_last_outline_at_level(node->down, level + 1, target_level);
}
static fz_outline *
xps_parse_document_outline(xps_document *doc, xml_element *root)
{
xml_element *node;
fz_outline *head = NULL, *entry, *tail;
int last_level = 1, this_level;
for (node = xml_down(root); node; node = xml_next(node))
{
if (!strcmp(xml_tag(node), "OutlineEntry"))
{
char *level = xml_att(node, "OutlineLevel");
char *target = xml_att(node, "OutlineTarget");
char *description = xml_att(node, "Description");
if (!target || !description)
continue;
entry = fz_malloc_struct(doc->ctx, fz_outline);
entry->title = fz_strdup(doc->ctx, description);
entry->dest.kind = FZ_LINK_GOTO;
entry->dest.ld.gotor.flags = 0;
entry->dest.ld.gotor.page = xps_lookup_link_target(doc, target);
entry->down = NULL;
entry->next = NULL;
this_level = level ? atoi(level) : 1;
if (!head)
{
head = entry;
}
else
{
tail = xps_find_last_outline_at_level(head, 1, this_level);
if (this_level > last_level)
tail->down = entry;
else
tail->next = entry;
}
last_level = this_level;
}
}
return head;
}
static fz_outline *
xps_parse_document_structure(xps_document *doc, xml_element *root)
{
xml_element *node;
if (!strcmp(xml_tag(root), "DocumentStructure"))
{
node = xml_down(root);
if (!strcmp(xml_tag(node), "DocumentStructure.Outline"))
{
node = xml_down(node);
if (!strcmp(xml_tag(node), "DocumentOutline"))
return xps_parse_document_outline(doc, node);
}
}
return NULL;
}
static fz_outline *
xps_load_document_structure(xps_document *doc, xps_fixdoc *fixdoc)
{
xps_part *part;
xml_element *root;
fz_outline *outline;
part = xps_read_part(doc, fixdoc->outline);
fz_try(doc->ctx)
{
root = xml_parse_document(doc->ctx, part->data, part->size);
}
fz_catch(doc->ctx)
{
xps_free_part(doc, part);
fz_rethrow(doc->ctx);
}
xps_free_part(doc, part);
if (!root)
return NULL;
fz_try(doc->ctx)
{
outline = xps_parse_document_structure(doc, root);
}
fz_catch(doc->ctx)
{
xml_free_element(doc->ctx, root);
fz_rethrow(doc->ctx);
}
xml_free_element(doc->ctx, root);
return outline;
}
fz_outline *
xps_load_outline(xps_document *doc)
{
xps_fixdoc *fixdoc;
fz_outline *head = NULL, *tail, *outline;
for (fixdoc = doc->first_fixdoc; fixdoc; fixdoc = fixdoc->next) {
if (fixdoc->outline) {
outline = xps_load_document_structure(doc, fixdoc);
if (!outline)
continue;
if (!head)
head = outline;
else
{
while (tail->next)
tail = tail->next;
tail->next = outline;
}
tail = outline;
}
}
return head;
}
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