Some compilers don't like x = {} where x is a boost::optional<string>

[libdcp.git] / src / asset.cc

diff --git a/src/asset.cc b/src/asset.cc
index 0147eba2cf30a3a8997974fe3d6e81f41b8c59f7..e68229033c8609b122423b7c44d8809b6dfb6242 100644 (file)
--- a/src/asset.cc
+++ b/src/asset.cc
@@ -1,34 +1,173 @@
 /*
-    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2021 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    This file is part of libdcp.
+
+    libdcp is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
-    This program is distributed in the hope that it will be useful,
+    libdcp is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    along with libdcp.  If not, see <http://www.gnu.org/licenses/>.
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of portions of this program with the
+    OpenSSL library under certain conditions as described in each
+    individual source file, and distribute linked combinations
+    including the two.
 
+    You must obey the GNU General Public License in all respects
+    for all of the code used other than OpenSSL.  If you modify
+    file(s) with this exception, you may extend this exception to your
+    version of the file(s), but you are not obligated to do so.  If you
+    do not wish to do so, delete this exception statement from your
+    version.  If you delete this exception statement from all source
+    files in the program, then also delete it here.
 */
 
+
+/** @file  src/asset.cc
+ *  @brief Asset class
+ */
+
+
+#include "raw_convert.h"
 #include "asset.h"
+#include "util.h"
+#include "exceptions.h"
+#include "dcp_assert.h"
+#include "compose.hpp"
+#include "pkl.h"
+#include <libxml++/libxml++.h>
+#include <boost/algorithm/string.hpp>
+
 
 using std::string;
+using boost::function;
+using std::shared_ptr;
+using boost::optional;
+using namespace boost::filesystem;
 using namespace dcp;
 
+
 Asset::Asset ()
 {
 
 }
 
-Asset::Asset (string id)
+
+Asset::Asset (path file)
+       : _file (file)
+{
+
+}
+
+
+Asset::Asset (string id, path file)
        : Object (id)
+       , _file (file)
+{
+
+}
+
+
+void
+Asset::add_to_pkl (shared_ptr<PKL> pkl, path root) const
+{
+       DCP_ASSERT (_file);
+
+       auto path = relative_to_root (
+               canonical(root),
+               canonical(_file.get())
+               );
+
+       if (!path) {
+               /* The path of this asset is not within our DCP, so we assume it's an external
+                  (referenced) one.
+               */
+               return;
+       }
+
+       pkl->add_asset (_id, _id, hash(), file_size(_file.get()), pkl_type(pkl->standard()));
+}
+
+
+void
+Asset::write_to_assetmap (xmlpp::Node* node, path root) const
 {
+       DCP_ASSERT (_file);
+       write_file_to_assetmap (node, root, _file.get(), _id);
+}
+
+
+void
+Asset::write_file_to_assetmap (xmlpp::Node* node, path root, path file, string id)
+{
+       auto path = relative_to_root (
+               canonical(root),
+               canonical(file)
+               );
 
+       if (!path) {
+               /* The path of this asset is not within our DCP, so we assume it's an external
+                  (referenced) one.
+               */
+               return;
+       }
+
+       auto asset = node->add_child ("Asset");
+       asset->add_child("Id")->add_child_text("urn:uuid:" + id);
+       auto chunk_list = asset->add_child ("ChunkList");
+       auto chunk = chunk_list->add_child ("Chunk");
+
+       chunk->add_child("Path")->add_child_text(path.get().generic_string());
+       chunk->add_child("VolumeIndex")->add_child_text("1");
+       chunk->add_child("Offset")->add_child_text("0");
+       chunk->add_child("Length")->add_child_text(raw_convert<string>(file_size(file)));
+}
+
+
+string
+Asset::hash (function<void (float)> progress) const
+{
+       DCP_ASSERT (_file);
+
+       if (!_hash) {
+               _hash = make_digest (_file.get(), progress);
+       }
+
+       return _hash.get();
+}
+
+
+bool
+Asset::equals (std::shared_ptr<const Asset> other, EqualityOptions, NoteHandler note) const
+{
+       if (_hash != other->_hash) {
+               note (NoteType::ERROR, "Asset: hashes differ");
+               return false;
+       }
+
+       return true;
+}
+
+
+void
+Asset::set_file (path file) const
+{
+       _file = absolute (file);
+       _hash = boost::optional<string>();
+}
+
+
+void
+Asset::set_hash (string hash)
+{
+       _hash = hash;
 }