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#include "mupdf/pdf.h"
static fz_outline *
pdf_load_outline_imp(pdf_document *doc, pdf_obj *dict)
{
fz_context *ctx = doc->ctx;
fz_outline *node, **prev, *first;
pdf_obj *obj;
pdf_obj *odict = dict;
fz_var(dict);
fz_var(first);
fz_try(ctx)
{
first = NULL;
prev = &first;
while (dict && pdf_is_dict(dict))
{
if (pdf_mark_obj(dict))
break;
node = fz_malloc_struct(ctx, fz_outline);
node->title = NULL;
node->dest.kind = FZ_LINK_NONE;
node->down = NULL;
node->next = NULL;
*prev = node;
prev = &node->next;
obj = pdf_dict_gets(dict, "Title");
if (obj)
node->title = pdf_to_utf8(doc, obj);
if ((obj = pdf_dict_gets(dict, "Dest")))
node->dest = pdf_parse_link_dest(doc, FZ_LINK_GOTO, obj);
else if ((obj = pdf_dict_gets(dict, "A")))
node->dest = pdf_parse_action(doc, obj);
obj = pdf_dict_gets(dict, "First");
if (obj)
node->down = pdf_load_outline_imp(doc, obj);
dict = pdf_dict_gets(dict, "Next");
}
}
fz_always(ctx)
{
for (dict = odict; dict && pdf_obj_marked(dict); dict = pdf_dict_gets(dict, "Next"))
pdf_unmark_obj(dict);
}
fz_catch(ctx)
{
fz_free_outline(ctx, first);
fz_rethrow(ctx);
}
return first;
}
fz_outline *
pdf_load_outline(pdf_document *doc)
{
pdf_obj *root, *obj, *first;
root = pdf_dict_gets(pdf_trailer(doc), "Root");
obj = pdf_dict_gets(root, "Outlines");
first = pdf_dict_gets(obj, "First");
if (first)
return pdf_load_outline_imp(doc, first);
return NULL;
}
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