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namespace Caribou {
private class XmlDeserializer : Object {
public static string? get_layout_file_inner (string data_dir,
string group,
string variant) {
string[] files = {@"$(group)_$(variant).xml", @"$(group).xml"};
foreach (string fn in files) {
string layout_fn = GLib.Path.build_filename (data_dir, fn);
GLib.File fp = GLib.File.new_for_path (layout_fn);
if (fp.query_exists ())
return layout_fn;
}
return null;
}
public static string get_layout_file (string keyboard_type, string group,
string variant) throws IOError {
Gee.ArrayList<string> dirs = new Gee.ArrayList<string> ();
string custom_dir = Environment.get_variable("CARIBOU_LAYOUTS_DIR");
if (custom_dir != null)
dirs.add (Path.build_filename (custom_dir, "layouts",
keyboard_type));
dirs.add (Path.build_filename (Environment.get_user_data_dir (),
"caribou", "layouts", keyboard_type));
foreach (string dir in Environment.get_system_data_dirs ()) {
dirs.add (Path.build_filename (
dir, "caribou", "layouts", keyboard_type));
}
// If no such keyboard type is found, default to "touch"
dirs.add (Path.build_filename (Environment.get_user_data_dir (),
"caribou", "layouts", "touch"));
foreach (string dir in Environment.get_system_data_dirs ()) {
dirs.add (Path.build_filename (
dir, "caribou", "layouts", "touch"));
}
foreach (string data_dir in dirs) {
string fn = get_layout_file_inner (data_dir, group, variant);
if (fn != null)
return fn;
}
// If no layout file is found, default to US
foreach (string data_dir in dirs) {
string fn = get_layout_file_inner (data_dir, "us", "");
if (fn != null)
return fn;
}
// Should not be reached, but needed to make valac happy
throw new IOError.NOT_FOUND (
"Could not find layout file for %s %s", group, variant);
}
public static GroupModel? load_group_from_file (string filename) {
Xml.Doc* doc;
try {
doc = Xml.Parser.parse_file (filename);
if (doc == null)
throw new IOError.FAILED (
"Cannot load XML text reader for %s", filename);
} catch (GLib.Error e) {
stdout.printf ("Failed to load %s: %s\n", filename, e.message);
return null;
}
// Use dummy group/variant names.
GroupModel grp = new GroupModel ("us", "");
Xml.Node* node = doc->children;
create_levels_from_xml (grp, node);
delete doc;
Xml.Parser.cleanup ();
return grp;
}
public static GroupModel? load_group (string keyboard_type,
string group, string variant) {
string filename;
try {
filename = get_layout_file (keyboard_type, group, variant);
} catch (GLib.Error e) {
stdout.printf ("Failed to load keyboard file %s/%s: %s\n",
keyboard_type,
GroupModel.create_group_name (group, variant),
e.message);
return null;
}
var grp = load_group_from_file (filename);
if (grp != null) {
grp.group = group;
grp.variant = variant;
}
return grp;
}
public static void create_levels_from_xml (GroupModel group,
Xml.Node* node) {
assert (node->name == "layout");
for (Xml.Node* iter = node->children; iter != null; iter = iter->next) {
if (iter->type != Xml.ElementType.ELEMENT_NODE)
continue;
string levelname = iter->get_prop ("name");
string mode = iter->get_prop ("mode");
LevelModel level = new LevelModel(mode);
load_rows (level, iter);
group.add_level(levelname, level);
}
}
public static void load_rows (LevelModel level, Xml.Node* node) {
assert (node->name == "level");
for (Xml.Node* i = node->children; i != null; i = i->next) {
if (i->type != Xml.ElementType.ELEMENT_NODE)
continue;
RowModel row = new RowModel ();
level.add_row (row);
for (Xml.Node* i2 = i->children; i2 != null; i2 = i2->next) {
if (i2->type != Xml.ElementType.ELEMENT_NODE)
continue;
if (i2->name == "key") {
load_column (row, i->get_prop ("align"), i);
break;
}
load_column (row, i2->get_prop ("align"), i2);
}
}
}
public static void load_column (RowModel row, string? align, Xml.Node* node) {
ColumnModel column = new ColumnModel ();
row.add_column (column);
for (Xml.Node* i = node->children; i != null; i = i->next) {
if (i->type != Xml.ElementType.ELEMENT_NODE)
continue;
column.add_key (load_key (i, align));
}
}
public static KeyModel load_key (Xml.Node* node, string? align) {
assert (node->name == "key");
string name = node->get_prop ("name");
assert (name != null);
string? text = node->get_prop ("text");
string? label_override = node->get_prop ("label");
KeyModel key = new KeyModel (name, text);
if (label_override != null)
key.label = label_override;
if (align != null)
key.align = align;
for (Xml.Attr* prop = node->properties; prop != null; prop = prop->next) {
if (prop->name == "toggle")
key.toggle = prop->children->content;
else if (prop->name == "align")
key.align = prop->children->content;
else if (prop->name == "width")
key.width = double.parse (prop->children->content);
else if (prop->name == "repeatable" && text == null)
key.repeatable = prop->children->content == "yes";
}
for (Xml.Node* i = node->children; i != null; i = i->next) {
if (i->type != Xml.ElementType.ELEMENT_NODE)
continue;
key.add_subkey (load_key (i, null));
}
return key;
}
}
}
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