2 Copyright (C) 2000-2001 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <ardour/stateful.h>
25 #include <ardour/utils.h>
26 #include <pbd/xml++.h>
38 Stateful::~Stateful ()
40 // Do not delete _extra_xml. The use of add_child_nocopy()
41 // means it needs to live on indefinately.
46 Stateful::add_extra_xml (XMLNode& node)
48 if (_extra_xml == 0) {
49 _extra_xml = new XMLNode ("extra");
52 _extra_xml->remove_nodes (node.name());
53 _extra_xml->add_child_nocopy (node);
57 Stateful::extra_xml (const string& str)
59 if (_extra_xml == 0) {
63 const XMLNodeList& nlist = _extra_xml->children();
64 XMLNodeConstIterator i;
66 for (i = nlist.begin(); i != nlist.end(); ++i) {
67 if ((*i)->name() == str) {
76 Stateful::add_instant_xml (XMLNode& node, const string& dir)
78 if (_instant_xml == 0) {
79 _instant_xml = new XMLNode ("instant");
82 _instant_xml->remove_nodes_and_delete (node.name());
83 _instant_xml->add_child_copy (node);
86 tree.set_filename(dir+"/instant.xml");
88 /* Important: the destructor for an XMLTree deletes
89 all of its nodes, starting at _root. We therefore
90 cannot simply hand it our persistent _instant_xml
91 node as its _root, because we will lose it whenever
92 the Tree goes out of scope.
94 So instead, copy the _instant_xml node (which does
95 a deep copy), and hand that to the tree.
98 XMLNode* copy = new XMLNode (*_instant_xml);
102 error << string_compose(_("Error: could not write %1"), dir+"/instant.xml") << endmsg;
107 Stateful::instant_xml (const string& str, const string& dir)
109 if (_instant_xml == 0) {
110 string instant_file = dir + "/instant.xml";
111 if (access(instant_file.c_str(), F_OK) == 0) {
113 if (tree.read(dir+"/instant.xml")) {
114 _instant_xml = new XMLNode(*(tree.root()));
116 warning << string_compose(_("Could not understand XML file %1"), instant_file) << endmsg;
124 const XMLNodeList& nlist = _instant_xml->children();
125 XMLNodeConstIterator i;
127 for (i = nlist.begin(); i != nlist.end(); ++i) {
128 if ((*i)->name() == str) {