[poppler] glib/poppler-document.cc glib/poppler-document.h glib/reference

[GitLab Mirror]

 glib/poppler-document.cc            |   85 ++++++++++++++++++++++++++++++++++++
 glib/poppler-document.h             |    3 +
 glib/reference/poppler-sections.txt |    1 
 3 files changed, 89 insertions(+)

New commits:
commit db1626d5210493a9e77cc6575383b566ae5e07f6
Author: Masamichi Hosoda <trueroad at trueroad.jp>
Date:   Mon Oct 8 19:02:10 2018 +0900

    Add poppler_document_create_dests_tree() to glib frontend
    
    Creates named destinations balanced binary tree in document.

diff --git a/glib/poppler-document.cc b/glib/poppler-document.cc
index 49c9ed3a..291c453c 100644
--- a/glib/poppler-document.cc
+++ b/glib/poppler-document.cc
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2016 Jakub Alba <jakubalba at gmail.com>
  * Copyright (C) 2018 Marek Kasik <mkasik at redhat.com>
+ * Copyright (C) 2019 Masamichi Hosoda <trueroad at trueroad.jp>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -839,6 +840,90 @@ poppler_document_find_dest (PopplerDocument *document,
   return dest;
 }
 
+static gint
+_poppler_dest_compare_keys (gconstpointer a,
+			    gconstpointer b,
+			    gpointer user_data)
+{
+	return g_strcmp0 (static_cast<const gchar*>(a),
+			  static_cast<const gchar*>(b));
+}
+
+static void
+_poppler_dest_destroy_value (gpointer value)
+{
+	poppler_dest_free (static_cast<PopplerDest*>(value));
+}
+
+/**
+ * poppler_document_create_dests_tree:
+ * @document: A #PopplerDocument
+ *
+ * Creates named destinations balanced binary tree in @document
+ *
+ * The tree key is strings in the form returned by
+ * poppler_named_dest_bytestring() which constains a destination name.
+ * The tree value is the #PopplerDest* which contains a named destination.
+ * The return value must be freed with #g_tree_destroy.
+ *
+ * Returns: (transfer full) (nullable): the #GTree, or %NULL
+ * Since: 0.78
+ **/
+GTree *
+poppler_document_create_dests_tree (PopplerDocument *document)
+{
+	GTree *tree;
+	Catalog *catalog;
+	LinkDest *link_dest;
+	PopplerDest *dest;
+	int i;
+	gchar *key;
+
+	g_return_val_if_fail (POPPLER_IS_DOCUMENT (document), nullptr);
+
+	catalog = document->doc->getCatalog ();
+	if (catalog == nullptr)
+		return nullptr;
+
+	tree = g_tree_new_full (_poppler_dest_compare_keys, nullptr,
+				g_free,
+				_poppler_dest_destroy_value);
+
+	// Iterate from name-dict
+	const int nDests = catalog->numDests ();
+	for (i = 0; i < nDests; ++i) {
+		// The names of name-dict cannot contain \0,
+		// so we can use strlen().
+		auto name = catalog->getDestsName (i);
+		key = poppler_named_dest_from_bytestring
+			(reinterpret_cast<const guint8*> (name),
+			 strlen (name));
+		link_dest = catalog->getDestsDest (i);
+		if (link_dest) {
+			dest = _poppler_dest_new_goto (document, link_dest);
+			delete link_dest;
+			g_tree_insert (tree, key, dest);
+		}
+	}
+
+	// Iterate form name-tree
+	const int nDestsNameTree = catalog->numDestNameTree ();
+	for (i = 0; i < nDestsNameTree; ++i) {
+		auto name = catalog->getDestNameTreeName (i);
+		key = poppler_named_dest_from_bytestring
+			(reinterpret_cast<const guint8*> (name->c_str ()),
+			 name->getLength ());
+		link_dest = catalog->getDestNameTreeDest (i);
+		if (link_dest) {
+			dest = _poppler_dest_new_goto (document, link_dest);
+			delete link_dest;
+			g_tree_insert (tree, key, dest);
+		}
+	}
+
+	return tree;
+}
+
 char *_poppler_goo_string_to_utf8(const GooString *s)
 {
   if (s == nullptr) {
diff --git a/glib/poppler-document.h b/glib/poppler-document.h
index e9eeebfd..32614c55 100644
--- a/glib/poppler-document.h
+++ b/glib/poppler-document.h
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2016 Jakub Alba <jakubalba at gmail.com>
  * Copyright (C) 2018 Marek Kasik <mkasik at redhat.com>
+ * Copyright (C) 2019 Masamichi Hosoda <trueroad at trueroad.jp>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -386,6 +387,8 @@ GList             *poppler_document_get_attachments        (PopplerDocument  *do
 POPPLER_PUBLIC
 PopplerDest       *poppler_document_find_dest              (PopplerDocument  *document,
 							    const gchar      *link_name);
+POPPLER_PUBLIC
+GTree             *poppler_document_create_dests_tree      (PopplerDocument  *document);
 
 /* Form */
 POPPLER_PUBLIC
diff --git a/glib/reference/poppler-sections.txt b/glib/reference/poppler-sections.txt
index c71c2776..2da8aea5 100644
--- a/glib/reference/poppler-sections.txt
+++ b/glib/reference/poppler-sections.txt
@@ -151,6 +151,7 @@ PopplerPageLayout
 PopplerPageMode
 PopplerPermissions
 PopplerViewerPreferences
+poppler_document_create_dests_tree
 poppler_document_find_dest
 poppler_document_get_attachments
 poppler_document_get_author