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73 lines
2.1 KiB
JavaScript
73 lines
2.1 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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/**
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* @namespace Defines useful methods to work with localized content
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*/
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var l10n = exports;
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/**
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* Retrieve the localized content for a given DTD entity
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*
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* @memberOf l10n
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* @param {String[]} aDTDs Array of URLs for DTD files.
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* @param {String} aEntityId ID of the entity to get the localized content of.
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*
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* @returns {String} Localized content
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*/
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function getEntity(aDTDs, aEntityId) {
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// Add xhtml11.dtd to prevent missing entity errors with XHTML files
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aDTDs.push("resource:///res/dtd/xhtml11.dtd");
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// Build a string of external entities
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var references = "";
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for (i = 0; i < aDTDs.length; i++) {
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var id = 'dtd' + i;
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references += '<!ENTITY % ' + id + ' SYSTEM "' + aDTDs[i] + '">%' + id + ';';
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}
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var header = '<?xml version="1.0"?><!DOCTYPE elem [' + references + ']>';
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var element = '<elem id="entity">&' + aEntityId + ';</elem>';
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var content = header + element;
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var parser = Cc["@mozilla.org/xmlextras/domparser;1"].
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createInstance(Ci.nsIDOMParser);
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var doc = parser.parseFromString(content, 'text/xml');
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var node = doc.querySelector('elem[id="entity"]');
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if (!node) {
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throw new Error("Unkown entity '" + aEntityId + "'");
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}
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return node.textContent;
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}
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/**
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* Retrieve the localized content for a given property
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*
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* @memberOf l10n
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* @param {String} aURL URL of the .properties file.
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* @param {String} aProperty The property to get the value of.
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*
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* @returns {String} Value of the requested property
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*/
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function getProperty(aURL, aProperty) {
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var sbs = Cc["@mozilla.org/intl/stringbundle;1"].
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getService(Ci.nsIStringBundleService);
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var bundle = sbs.createBundle(aURL);
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try {
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return bundle.GetStringFromName(aProperty);
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}
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catch (ex) {
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throw new Error("Unkown property '" + aProperty + "'");
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}
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}
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// Export of functions
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l10n.getEntity = getEntity;
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l10n.getProperty = getProperty;
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