1 files changed, 72 insertions, 0 deletions
diff --git a/source/pdf/pdf-outline.c b/source/pdf/pdf-outline.c
new file mode 100644
index 00000000..584d60ea
--- /dev/null
+++ b/source/pdf/pdf-outline.c
@@ -0,0 +1,72 @@
+#include "mupdf/pdf.h"
+
+static fz_outline *
+pdf_load_outline_imp(pdf_document *xref, pdf_obj *dict)
+{
+	fz_context *ctx = xref->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_obj_mark(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(xref, obj);
+
+			if ((obj = pdf_dict_gets(dict, "Dest")))
+				node->dest = pdf_parse_link_dest(xref, obj);
+			else if ((obj = pdf_dict_gets(dict, "A")))
+				node->dest = pdf_parse_action(xref, obj);
+
+			obj = pdf_dict_gets(dict, "First");
+			if (obj)
+				node->down = pdf_load_outline_imp(xref, 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_obj_unmark(dict);
+	}
+	fz_catch(ctx)
+	{
+		fz_free_outline(ctx, first);
+		fz_rethrow(ctx);
+	}
+
+	return first;
+}
+
+fz_outline *
+pdf_load_outline(pdf_document *xref)
+{
+	pdf_obj *root, *obj, *first;
+
+	root = pdf_dict_gets(pdf_trailer(xref), "Root");
+	obj = pdf_dict_gets(root, "Outlines");
+	first = pdf_dict_gets(obj, "First");
+	if (first)
+		return pdf_load_outline_imp(xref, first);
+
+	return NULL;
+}