draklive2: support language selection in the boot menu.

1 files changed, 56 insertions, 7 deletions

diff --git a/draklive2 b/draklive2
index bad49ee..3edc391 100755
--- a/draklive2
+++ b/draklive2
@@ -463,6 +463,21 @@ sub create_bootloader {
         @theme_fonts = map { basename($_) } glob("$theme/*.pf2");
     }
 
+    my $add_lang_menu = defined $live->{media}{bootloader_langs};
+    if ($add_lang_menu) {
+        my $lang_names = get_absolute_path($live, $live->{media}{bootloader_langs});
+        -e $lang_names or die "cannot find language name file $lang_names\n";
+        my @langs = eval(cat_($lang_names)) or die "error in language name file $lang_names\n";
+        MDK::Common::File::output_utf8($grub2_dir . '/lang-menu.cfg', build_lang_menu_cfg(@langs));
+
+        my $locale_dir = $grub2_dir . '/locale';
+        mkdir_p($locale_dir);
+
+        my $messages = get_absolute_path($live, $live->{media}{bootloader_messages});
+        -d $messages or die "cannot find translated messages directory $messages\n";
+        cp_f(glob($messages . '/*.mo'), $locale_dir);
+    }
+
     my $eltorito_img = get_absolute_path($live, $live->{media}{eltorito_img});
     if (defined $eltorito_img) {
         -e $eltorito_img or die "cannot find grub2 Eltorito boot image $eltorito_img\n";
@@ -478,7 +493,7 @@ sub create_bootloader {
         cp_f($live->{settings}{config_root} . '/' . $live->{media}{grub2_cfg}, $grub2_cfg);
         run_("sed", "-i", "s/VOLUME_LABEL/$label/g", $grub2_cfg);
     } else {
-        output($grub2_cfg, build_grub2_cfg($live, $theme_name, \@theme_fonts));
+        output($grub2_cfg, build_grub2_cfg($live, $theme_name, \@theme_fonts, $add_lang_menu));
     }
 
     my $title = $label;
@@ -526,8 +541,8 @@ sub build_grub2_eltorito_img {
     # temporary hack to workaround grub2/grub2-efi conflict
     run_({ root => $live->get_system_root }, 'urpmi', '-q', '--force', 'grub2');
 
-    my @modules = qw(biosdisk iso9660 fat part_msdos all_video font png gfxterm gfxmenu linux configfile
-                     echo ls search test);
+    my @modules = qw(biosdisk iso9660 fat part_msdos all_video font png gfxterm gfxmenu linux
+                     configfile echo gettext ls search test);
     my $output = '/boot/grub2/eltorito.img';
 
     run_({ root => $live->get_system_root }, 'grub2-mkimage',
@@ -549,8 +564,8 @@ sub build_grub2_bootx64_efi {
     # temporary hack to workaround grub2/grub2-efi conflict
     run_({ root => $live->get_system_root }, 'urpmi', '-q', '--force', 'grub2-efi');
 
-    my @modules = qw(iso9660 fat part_msdos all_video font png gfxterm gfxmenu linux configfile
-                     echo ls search test);
+    my @modules = qw(iso9660 fat part_msdos all_video font png gfxterm gfxmenu linux
+                     configfile echo gettext ls search test);
     my $output = '/boot/grub2/bootx64.efi';
 
     run_({ root => $live->get_system_root }, 'grub2-mkimage',
@@ -567,13 +582,17 @@ sub build_grub2_bootx64_efi {
 }
 
 sub build_grub2_cfg {
-    my ($live, $theme_name, $theme_fonts) = @_;
+    my ($live, $theme_name, $theme_fonts, $add_lang_menu) = @_;
 
     my @loadfonts;
     if (defined $theme_name) {
         @loadfonts = map { "loadfont \${prefix}/themes/$theme_name/$_" } @$theme_fonts;
     }
 
+    my @langs = get_langs($live);
+    my $default_lang = $langs[0] || 'en_US';
+    my $gettext = $add_lang_menu ? '$' : '';
+
     my $boot_dir = $live->get_media_prefix('boot');
 
     join("\n",
@@ -599,10 +618,21 @@ sub build_grub2_cfg {
         "set timeout=" . get_bootloader_timeout($live),
         "set default=" . get_bootloader_default($live),
         "",
+        if_($add_lang_menu,
+            "if [ -z \$lang ] ; then",
+            "    set lang=$default_lang",
+            "fi",
+            "export lang",
+            "",
+            "submenu $gettext\"Language [\$lang]\" {",
+            "    source \$prefix/lang-menu.cfg",
+            "}",
+            "",
+        ),
         (map {
             my ($name, $cmdline) = @$_;
             join("\n",
-                "menuentry '$name' {",
+                "menuentry $gettext\"$name\" {",
                 "    linux $boot_dir/vmlinuz " . get_default_append($live) . if_($cmdline, " $cmdline"),
                 "    initrd $boot_dir/initrd.gz",
                 "}"
@@ -633,6 +663,25 @@ sub get_default_append {
     );
 }
 
+sub build_lang_menu_cfg {
+    my ($langs) = @_;
+    join("\n",
+        "function set_language {",
+        "    set lang=\$1",
+        "    configfile \$prefix/grub.cfg",
+        "}",
+        "",
+        "set default=\$lang",
+        "set timeout=-1",
+        "",
+        (map {
+            my ($id, $name) = @$_;
+            "menuentry '$name' --id $id { set_language $id }";
+         } group_by2(@$langs)),
+        "",
+    );
+}
+
 sub build_uefi_grub2_cfg {
     my ($live) = @_;
     join("\n",