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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/* exported loadInterfaceXML, loadSubInterfaceXML */
const Config = imports.misc.config;
const { Gio, GLib } = imports.gi;
let _ifaceResource = null;
/**
* @private
*/
function _ensureIfaceResource() {
if (_ifaceResource)
return;
// don't use global.datadir so the method is usable from tests/tools
let dir = GLib.getenv('GNOME_SHELL_DATADIR') || Config.PKGDATADIR;
let path = `${dir}/gnome-shell-dbus-interfaces.gresource`;
_ifaceResource = Gio.Resource.load(path);
_ifaceResource._register();
}
/**
* @param {string} iface the interface name
* @returns {string | null} the XML string or null if it is not found
*/
function loadInterfaceXML(iface) {
_ensureIfaceResource();
let uri = `resource:///org/gnome/shell/dbus-interfaces/${iface}.xml`;
let f = Gio.File.new_for_uri(uri);
try {
let [ok_, bytes] = f.load_contents(null);
return new TextDecoder().decode(bytes);
} catch (e) {
log(`Failed to load D-Bus interface ${iface}`);
}
return null;
}
/**
* @param {string} iface the interface name
* @param {string} ifaceFile the interface filename
* @returns {string | null} the XML string or null if it is not found
*/
function loadSubInterfaceXML(iface, ifaceFile) {
let xml = loadInterfaceXML(ifaceFile);
if (!xml)
return null;
let ifaceStartTag = `<interface name="${iface}">`;
let ifaceStopTag = '</interface>';
let ifaceStartIndex = xml.indexOf(ifaceStartTag);
let ifaceEndIndex = xml.indexOf(ifaceStopTag, ifaceStartIndex + 1) + ifaceStopTag.length;
let xmlHeader = '<!DOCTYPE node PUBLIC\n' +
'\'-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\'\n' +
'\'http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\'>\n' +
'<node>\n';
let xmlFooter = '</node>';
return (
xmlHeader +
xml.substr(ifaceStartIndex, ifaceEndIndex - ifaceStartIndex) +
xmlFooter);
}
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