Samuele E. Locatelli
102 lines
2.6 KiB
JavaScript
102 lines
2.6 KiB
JavaScript
/**
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* Download tool for Unicode CLDR JSON data
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*
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* Copyright 2013 Rafael Xavier de Souza
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* Released under the MIT license
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* https://github.com/rxaviers/cldr-data-downloader/blob/master/LICENSE-MIT
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*/
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"use strict";
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var assert = require("assert");
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var AvailableLocales = require("./lib/available_locales");
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var download = require("./lib/download");
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var isUrl = require("./lib/util").isUrl;
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var progress = require("./lib/progress");
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var Q = require("q");
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var readJSON = require("./lib/util").readJSON;
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var State = require("./lib/state");
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var unpack = require("./lib/unpack");
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Q.longStackSupport = true;
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function alwaysArray(arrayOrSomething) {
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return Array.isArray(arrayOrSomething) ?
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arrayOrSomething :
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arrayOrSomething ? [arrayOrSomething] : [];
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}
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/**
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* fn( srcUrl, destPath [, options], callback )
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*/
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module.exports = function(srcUrl, destPath, options, callback) {
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var error, state;
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if (callback === undefined && typeof options === "function") {
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callback = options;
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options = {};
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}
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assert(typeof srcUrl === "string", "must include srcUrl (e.g., " +
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"\"http://www.unicode.org/Public/cldr/26/json.zip\")");
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assert(typeof destPath === "string", "must include destPath (e.g., " +
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"\"./cldr\")");
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assert(typeof options === "object", "invalid options");
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assert(typeof callback === "function", "must include callback function");
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Q.try(function() {
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// Is srcUrl a config file?
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if (!isUrl(srcUrl) && (/.json$/i).test(srcUrl)) {
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// Read its URL.
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options.srcUrlKey = options.srcUrlKey || "core";
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srcUrl = readJSON(srcUrl)[options.srcUrlKey];
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}
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// Is it already installed?
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state = new State(srcUrl, destPath);
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if (!options.force && state.isInstalled()) {
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error = new Error("Already downloaded and unpacked, quitting... Use " +
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"`options.force = true` to override.");
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error.code = "E_ALREADY_INSTALLED";
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throw error;
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}
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// Download
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}).then(function() {
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var srcUrls = alwaysArray(srcUrl);
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return Q.all(srcUrls.map(function(srcUrl) {
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return download({
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url: srcUrl
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});
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})).progress(progress(srcUrls.length));
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// Unpack
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}).then(unpack({
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path: destPath
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// Generate available locales.
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})).then(function() {
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try {
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new AvailableLocales(destPath).write();
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} catch(error) {
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error.message = "Error generating available locales. " + error.message;
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throw error;
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}
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// Save installation state.
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}).then(function() {
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try {
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state.write();
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} catch(error) {
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error.message = "Error saving installation state. " + error.message;
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throw error;
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}
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// Done
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}).nodeify(callback);
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};
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