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>
36 Stateful::~Stateful ()
38 // Do not delete _extra_xml. The use of add_child_nocopy()
39 // means it needs to live on indefinately.
44 Stateful::add_extra_xml (XMLNode& node)
46 if (_extra_xml == 0) {
47 _extra_xml = new XMLNode ("extra");
50 _extra_xml->remove_nodes (node.name());
51 _extra_xml->add_child_nocopy (node);
55 Stateful::extra_xml (const string& str)
57 if (_extra_xml == 0) {
61 const XMLNodeList& nlist = _extra_xml->children();
62 XMLNodeConstIterator i;
64 for (i = nlist.begin(); i != nlist.end(); ++i) {
65 if ((*i)->name() == str) {
74 Stateful::add_instant_xml (XMLNode& node, const string& dir)
76 if (_instant_xml == 0) {
77 _instant_xml = new XMLNode ("instant");
80 _instant_xml->remove_nodes_and_delete (node.name());
81 _instant_xml->add_child_copy (node);
84 tree.set_filename(dir+"/instant.xml");
86 /* Important: the destructor for an XMLTree deletes
87 all of its nodes, starting at _root. We therefore
88 cannot simply hand it our persistent _instant_xml
89 node as its _root, because we will lose it whenever
90 the Tree goes out of scope.
92 So instead, copy the _instant_xml node (which does
93 a deep copy), and hand that to the tree.
96 XMLNode* copy = new XMLNode (*_instant_xml);
100 error << string_compose(_("Error: could not write %1"), dir+"/instant.xml") << endmsg;
105 Stateful::instant_xml (const string& str, const string& dir)
107 if (_instant_xml == 0) {
108 string instant_file = dir + "/instant.xml";
109 if (access(instant_file.c_str(), F_OK) == 0) {
111 if (tree.read(dir+"/instant.xml")) {
112 _instant_xml = new XMLNode(*(tree.root()));
114 warning << string_compose(_("Could not understand XML file %1"), instant_file) << endmsg;
122 const XMLNodeList& nlist = _instant_xml->children();
123 XMLNodeConstIterator i;
125 for (i = nlist.begin(); i != nlist.end(); ++i) {
126 if ((*i)->name() == str) {