session_configuration.cc

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/*
    Copyright (C) 2009 Paul Davis

    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
    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,
    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.

*/

#include <glib.h>
#include <glib/gstdio.h> /* for g_stat() */
#include <glibmm/miscutils.h> /* for build_filename() */

#include "pbd/error.h"
#include "pbd/file_utils.h"
#include "pbd/locale_guard.h"
#include "pbd/pathexpand.h"

#include "ardour/types.h"
#include "ardour/filesystem_paths.h"
#include "ardour/session_configuration.h"
#include "ardour/utils.h"
#include "i18n.h"

using namespace ARDOUR;
using namespace PBD;

SessionConfiguration::SessionConfiguration ()
        :
/* construct variables */
#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL
#define CONFIG_VARIABLE(Type,var,name,value) var (name,value),
#define CONFIG_VARIABLE_SPECIAL(Type,var,name,value,mutator) var (name,value,mutator),
#include "ardour/session_configuration_vars.h"
#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL
        foo (0)
{

}

XMLNode&
SessionConfiguration::get_state ()
{
        XMLNode* root;
        LocaleGuard lg (X_("C"));

        root = new XMLNode ("Ardour");
        root->add_child_nocopy (get_variables ());

        return *root;
}


XMLNode&
SessionConfiguration::get_variables ()
{
        XMLNode* node;
        LocaleGuard lg (X_("C"));

        node = new XMLNode ("Config");

#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL
#define CONFIG_VARIABLE(type,var,Name,value) \
        var.add_to_node (*node);
#define CONFIG_VARIABLE_SPECIAL(type,var,Name,value,mutator) \
        var.add_to_node (*node);
#include "ardour/session_configuration_vars.h"
#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL

        return *node;
}


int
SessionConfiguration::set_state (XMLNode const& root, int /*version*/)
{
        if (root.name() != "Ardour") {
                return -1;
        }

        for (XMLNodeConstIterator i = root.children().begin(); i != root.children().end(); ++i) {
                if ((*i)->name() == "Config") {
                        set_variables (**i);
                }
        }

        return 0;
}

void
SessionConfiguration::set_variables (const XMLNode& node)
{
#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL
#define CONFIG_VARIABLE(type,var,name,value) \
        if (var.set_from_node (node)) { \
                ParameterChanged (name);                  \
        }
#define CONFIG_VARIABLE_SPECIAL(type,var,name,value,mutator) \
        if (var.set_from_node (node)) {    \
                ParameterChanged (name);                     \
        }

#include "ardour/session_configuration_vars.h"
#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL

}
void
SessionConfiguration::map_parameters (boost::function<void (std::string)>& functor)
{
#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL
#define CONFIG_VARIABLE(type,var,name,value)                 functor (name);
#define CONFIG_VARIABLE_SPECIAL(type,var,name,value,mutator) functor (name);
#include "ardour/session_configuration_vars.h"
#undef  CONFIG_VARIABLE
#undef  CONFIG_VARIABLE_SPECIAL
}


bool
SessionConfiguration::load_state ()
{
        std::string rcfile;
        GStatBuf statbuf;
        if (find_file (ardour_config_search_path(), "session.rc", rcfile)) {
                if (g_stat (rcfile.c_str(), &statbuf)) {
                        return false;
                }
                if (statbuf.st_size == 0) {
                        return false;
                }
                XMLTree tree;
                if (!tree.read (rcfile.c_str())) {
                        error << string_compose(_("%1: cannot part default session options \"%2\""), PROGRAM_NAME, rcfile) << endmsg;
                        return false;
                }

                XMLNode& root (*tree.root());
                if (root.name() != X_("SessionDefaults")) {
                        warning << _("Invalid session default XML Root.") << endmsg;
                        return false;
                }

                XMLNode* node;
                if (((node = find_named_node (root, X_("Config"))) != 0)) {
                        LocaleGuard lg (X_("C"));
                        set_variables(*node);
                        info << _("Loaded custom session defaults.") << endmsg;
                } else {
                        warning << _("Found no session defaults in XML file.") << endmsg;
                        return false;
                }

                /* CUSTOM OVERRIDES */
                set_audio_search_path("");
                set_midi_search_path("");
                set_raid_path("");
        }
        return true;
}

bool
SessionConfiguration::save_state ()
{
        const std::string rcfile = Glib::build_filename (user_config_directory(), "session.rc");
        if (rcfile.empty()) {
                return false;
        }

        XMLTree tree;
        XMLNode* root = new XMLNode(X_("SessionDefaults"));
        root->add_child_nocopy (get_variables ());
        tree.set_root (root);

        if (!tree.write (rcfile.c_str())) {
                error << _("Could not save session options") << endmsg;
                return false;
        }

        return true;
}