bundle_env_linux.cc

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/*
    Copyright (C) 2001-2012 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 <fstream>
#include <string>
#include <vector>
#include <cerrno>
#include <cstring>

#include <glib.h>
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>

#include <fontconfig/fontconfig.h>

#include "ardour/ardour.h"
#include "ardour/filesystem_paths.h"

#include "pbd/epa.h"
#include "pbd/search_path.h"
#include "pbd/pathexpand.h"
#include "pbd/file_utils.h"

#include "bundle_env.h"

#include "i18n.h"

using namespace PBD;
using namespace ARDOUR;
using namespace std;

void
fixup_bundle_environment (int /*argc*/, char* argv[], string & localedir)
{
        /* THIS IS FOR LINUX - its just about the only place where its
         * acceptable to build paths directly using '/'.
         */

        if (!g_getenv ("ARDOUR_BUNDLED")) {
                return;
        }

        EnvironmentalProtectionAgency::set_global_epa (new EnvironmentalProtectionAgency (true, "PREBUNDLE_ENV"));

        std::string path;
        std::string dir_path = Glib::path_get_dirname (Glib::path_get_dirname (argv[0]));

#ifdef ENABLE_NLS
        if (!ARDOUR::translations_are_enabled ()) {
                localedir = "/this/cannot/exist";
        } else {
                /* force localedir into the bundle */
                vector<string> lpath;
                lpath.push_back (dir_path);
                lpath.push_back ("share");
                lpath.push_back ("locale");
                localedir = canonical_path (Glib::build_filename (lpath)).c_str();
        }
#endif

        /* note that this function is POSIX/Linux specific, so using / as
           a dir separator in this context is just fine.
        */

        export_search_path (dir_path, "ARDOUR_DLL_PATH", "/lib");
        export_search_path (dir_path, "ARDOUR_CONFIG_PATH", "/etc");
        export_search_path (dir_path, "ARDOUR_INSTANT_XML_PATH", "/share");
        export_search_path (dir_path, "ARDOUR_DATA_PATH", "/share");
        export_search_path (dir_path, "LADSPA_PATH", "/plugins");
        export_search_path (dir_path, "VAMP_PATH", "/lib");
        export_search_path (dir_path, "GTK_PATH", "/lib/gtkengines");

        g_setenv ("SUIL_MODULE_DIR", (dir_path + "/lib").c_str(), 1);
        g_setenv ("PATH", (dir_path + "/bin:" + std::string(g_getenv ("PATH"))).c_str(), 1);

        /* unset GTK_RC_FILES so that we only load the RC files that we define
         */

        g_unsetenv ("GTK_RC_FILES");

        /* Tell fontconfig where to find fonts.conf. Use the system version
           if it exists, otherwise use the stuff we included in the bundle
        */

        if (Glib::file_test ("/etc/fonts/fonts.conf", Glib::FILE_TEST_EXISTS)) {
                g_setenv ("FONTCONFIG_FILE", "/etc/fonts/fonts.conf", 1);
                g_setenv ("FONTCONFIG_PATH", "/etc/fonts", 1);
        } else {
                error << _("No fontconfig file found on your system. Things may looked very odd or ugly") << endmsg;
        }

        /* this doesn't do much but setting it should prevent various parts of the GTK/GNU stack
           from looking outside the bundle to find the charset.alias file.
        */
        g_setenv ("CHARSETALIASDIR", dir_path.c_str(), 1);

}

void 
load_custom_fonts() 
{
        std::string ardour_mono_file;

        if (!find_file (ardour_data_search_path(), "ArdourMono.ttf", ardour_mono_file)) {
                cerr << _("Cannot find ArdourMono TrueType font") << endl;
        }

        FcConfig *config = FcInitLoadConfigAndFonts();
        FcBool ret = FcConfigAppFontAddFile(config, reinterpret_cast<const FcChar8*>(ardour_mono_file.c_str()));

        if (ret == FcFalse) {
                cerr << _("Cannot load ArdourMono TrueType font.") << endl;
        }

        ret = FcConfigSetCurrent(config);

        if (ret == FcFalse) {
                cerr << _("Failed to set fontconfig configuration.") << endl;
        }
}