From ce4b974c5432b7f3c3035008130a61506598c621 Mon Sep 17 00:00:00 2001
From: Masamichi Hosoda <trueroad@trueroad.jp>
Date: Sun, 28 Aug 2016 16:55:20 +0900
Subject: [PATCH v2 7/7] Add poppler_document_build_dests_hashtable() to glib
 frontend

Builds named destinations hash table in document.
---
 glib/poppler-document.cc | 82 ++++++++++++++++++++++++++++++++++++++++++++++++
 glib/poppler-document.h  |  1 +
 2 files changed, 83 insertions(+)

diff --git a/glib/poppler-document.cc b/glib/poppler-document.cc
index 15d8d44..365a159 100644
--- a/glib/poppler-document.cc
+++ b/glib/poppler-document.cc
@@ -818,6 +818,88 @@ poppler_document_free_dests_namelist (GList *list)
 	g_list_free_full (list, _poppler_dest_destroy_bytes);
 }
 
+static void
+_poppler_dest_destroy_key (gpointer key)
+{
+	g_bytes_unref (static_cast<GBytes*>(key));
+}
+
+static void
+_poppler_dest_destroy_value (gpointer value)
+{
+	poppler_dest_free (static_cast<PopplerDest*>(value));
+}
+
+/**
+ * poppler_document_build_dests_hashtable:
+ * @document: A #PopplerDocument
+ *
+ * Builds named destinations hash table in @document
+ *
+ * Return value: a #GHashTable or %NULL if @document is not valid.
+ * The hash key is the #GBytes which constains a destination name.
+ * Note that the names can contain \0, so it is GBytes instead of gchar*.
+ * The hash value the #PopplerDest which contains a named destination.
+ * Returned value must be freed with #g_hash_table_destroy.
+ *
+ * Since: 0.48
+ **/
+GHashTable *
+poppler_document_build_dests_hashtable (PopplerDocument *document)
+{
+	GHashTable *hash;
+	Catalog *catalog;
+	LinkDest *link_dest;
+	PopplerDest *dest;
+	int i, len;
+	GBytes *key;
+
+	g_return_val_if_fail (POPPLER_IS_DOCUMENT (document), NULL);
+
+	catalog = document->doc->getCatalog ();
+	if (catalog == NULL)
+		return NULL;
+
+	hash = g_hash_table_new_full (g_bytes_hash, poppler_dest_equal,
+				      _poppler_dest_destroy_key,
+				      _poppler_dest_destroy_value);
+
+	// Iterate from name-dict
+	len = catalog->numDests ();
+	for (i = 0; i < len; ++i) {
+		// The names of name-dict cannot contain \0,
+		// so we can use strlen().
+		key = g_bytes_new (catalog->getDestsName (i),
+				   strlen (catalog->getDestsName (i)));
+		link_dest = catalog->getDestsDest (i);
+		if (link_dest) {
+			dest = _poppler_dest_new_goto (document, link_dest);
+			delete link_dest;
+		} else
+			dest = NULL;
+		g_hash_table_insert (hash, key, dest);
+	}
+
+	// Iterate form name-tree
+	len = catalog->numDestNameTree ();
+	for (i = 0; i < len; ++i) {
+		// The names of name-tree can contain \0,
+		// so we use GBytes instead of gchar*.
+		key = g_bytes_new
+			(catalog->getDestNameTreeName (i)->getCString (),
+			 catalog->getDestNameTreeName (i)->getLength ());
+		link_dest = catalog->getDestNameTreeDest (i);
+		if (link_dest) {
+			dest = _poppler_dest_new_goto (document, link_dest);
+			delete link_dest;
+		} else
+			dest = NULL;
+		g_hash_table_insert (hash, key, dest);
+	}
+
+	return hash;
+}
+
 char *_poppler_goo_string_to_utf8(GooString *s)
 {
   if (s == NULL) {
diff --git a/glib/poppler-document.h b/glib/poppler-document.h
index 1e8adb7..2855837 100644
--- a/glib/poppler-document.h
+++ b/glib/poppler-document.h
@@ -245,6 +245,7 @@ PopplerDest       *poppler_document_find_dest_bytes        (PopplerDocument  *do
 							    GBytes           *link_name);
 GList             *poppler_document_build_dests_namelist   (PopplerDocument *document);
 void               poppler_document_free_dests_namelist    (GList *list);
+GHashTable        *poppler_document_build_dests_hashtable  (PopplerDocument  *document);
 
 /* Form */
 PopplerFormField  *poppler_document_get_form_field         (PopplerDocument  *document,
-- 
2.8.3