2 Copyright (C) 1999-2009 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.
22 #include "pbd/compose.h"
23 #include "pbd/configuration_variable.h"
24 #include "pbd/debug.h"
26 #if defined(_MSC_VER) && (_MSC_VER < 1800)
27 // MSVC only introduced std::strtof in VS2013
28 #define strtof(s, e) strtod(s, e)
35 ConfigVariableBase::add_to_node (XMLNode& node)
37 const std::string v = get_as_string ();
38 DEBUG_TRACE (DEBUG::Configuration, string_compose ("Config variable %1 stored as [%2]\n", _name, v));
39 XMLNode* child = new XMLNode ("Option");
40 child->add_property ("name", _name);
41 child->add_property ("value", v);
42 node.add_child_nocopy (*child);
46 ConfigVariableBase::set_from_node (XMLNode const & node)
48 if (node.name() == "Config" || node.name() == "Canvas" || node.name() == "UI") {
52 const XMLProperty* prop;
54 XMLNodeConstIterator niter;
55 XMLNode const * child;
57 nlist = node.children();
59 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
63 if (child->name() == "Option") {
64 if ((prop = child->property ("name")) != 0) {
65 if (prop->value() == _name) {
66 if ((prop = child->property ("value")) != 0) {
67 set_from_string (prop->value());
75 } else if (node.name() == "Options") {
80 XMLNodeConstIterator oiter;
82 const XMLProperty* opt_prop;
84 olist = node.children();
86 for (oiter = olist.begin(); oiter != olist.end(); ++oiter) {
90 if (option->name() == _name) {
91 if ((opt_prop = option->property ("val")) != 0) {
92 set_from_string (opt_prop->value());
103 ConfigVariableBase::notify ()
105 // placeholder for any debugging desired when a config variable is modified
109 ConfigVariableBase::miss ()
111 // placeholder for any debugging desired when a config variable
112 // is set but to the same value as it already has
115 /* Specialisation of ConfigVariable to deal with float (-inf etc)
116 * http://stackoverflow.com/questions/23374095/should-a-stringstream-parse-infinity-as-an-infinite-value
119 ConfigVariable<float>::set_from_string (std::string const & s) {
120 value = std::strtof (s.c_str(), NULL);