103 lines
2.9 KiB
JavaScript
103 lines
2.9 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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var EXPORTED_SYMBOLS = ["InstallRDF"];
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ChromeUtils.defineModuleGetter(this, "RDFDataSource",
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"chrome://userchromejs/content/RDFDataSource.jsm");
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const RDFURI_INSTALL_MANIFEST_ROOT = "urn:mozilla:install-manifest";
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function EM_R(aProperty) {
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return `http://www.mozilla.org/2004/em-rdf#${aProperty}`;
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}
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function getValue(literal) {
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return literal && literal.getValue();
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}
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function getProperty(resource, property) {
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return getValue(resource.getProperty(EM_R(property)));
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}
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class Manifest {
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constructor(ds) {
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this.ds = ds;
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}
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static loadFromString(text) {
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return new this(RDFDataSource.loadFromString(text));
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}
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}
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class InstallRDF extends Manifest {
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_readProps(source, obj, props) {
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for (let prop of props) {
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let val = getProperty(source, prop);
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if (val != null) {
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obj[prop] = val;
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}
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}
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}
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_readArrayProp(source, obj, prop, target, decode = getValue) {
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let result = Array.from(source.getObjects(EM_R(prop)),
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target => decode(target));
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if (result.length) {
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obj[target] = result;
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}
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}
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_readArrayProps(source, obj, props, decode = getValue) {
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for (let [prop, target] of Object.entries(props)) {
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this._readArrayProp(source, obj, prop, target, decode);
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}
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}
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_readLocaleStrings(source, obj) {
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this._readProps(source, obj, ["name", "description", "creator", "homepageURL"]);
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this._readArrayProps(source, obj, {
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locale: "locales",
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developer: "developers",
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translator: "translators",
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contributor: "contributors",
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});
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}
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decode() {
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let root = this.ds.getResource(RDFURI_INSTALL_MANIFEST_ROOT);
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let result = {};
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let props = ["id", "version", "type", "updateURL", "optionsURL",
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"optionsType", "aboutURL", "iconURL",
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"bootstrap", "unpack", "strictCompatibility"];
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this._readProps(root, result, props);
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let decodeTargetApplication = source => {
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let app = {};
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this._readProps(source, app, ["id", "minVersion", "maxVersion"]);
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return app;
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};
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let decodeLocale = source => {
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let localized = {};
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this._readLocaleStrings(source, localized);
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return localized;
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};
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this._readLocaleStrings(root, result);
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this._readArrayProps(root, result, {"targetPlatform": "targetPlatforms"});
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this._readArrayProps(root, result, {"targetApplication": "targetApplications"},
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decodeTargetApplication);
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this._readArrayProps(root, result, {"localized": "localized"},
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decodeLocale);
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this._readArrayProps(root, result, {"dependency": "dependencies"},
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source => getProperty(source, "id"));
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return result;
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}
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}
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