alloy/Alloy/commands/extract-i18n/index.js

TiDev Titanium MVC Framework

/*
	Corresponds to `alloy extract-i18n` command.
	http://docs.appcelerator.com/platform/latest/#!/guide/Alloy_Tasks_with_the_CLI-section-37536785_AlloyTaskswiththeCLI-Extractinglocalizationstrings
*/
var fs = require('fs'),
	walkSync = require('walk-sync'),
	path = require('path'),
	CONST = require('../../common/constants'),
	U = require('../../utils'),
	_ = require('lodash'),
	logger = require('../../logger'),
	i18nHandler = require('./i18nHandler');

var searchString = '(?:L|Ti.Locale.getString|Titanium.Locale.getString)' +
	"\\(\\s*[\"']([a-zA-Z]\\w*?)[\"']\\s*[\\),]";
var searchRegex = new RegExp(searchString, 'g');
var valueRegex = new RegExp(searchString);

function extractStrings() {
	try {
		var sourceDir = paths.app;
		var files = walkSync(sourceDir);
		var styleSuffix = '.' + CONST.FILE_EXT.STYLE;
		var controllerSuffix = '.' + CONST.FILE_EXT.CONTROLLER;
		var viewSuffix = '.' + CONST.FILE_EXT.VIEW;

		// filter only js, xml and style files
		files = _.filter(files, function(f) {
			f = path.normalize(f);
			return f.substr(-styleSuffix.length) === styleSuffix ||
				f.substr(-viewSuffix.length) === viewSuffix ||
				f.substr(-controllerSuffix.length) === controllerSuffix;
		});

		var strings = [];
		_.each(files, function(f) {
			var file = path.join(sourceDir, f);
			var fileContent = fs.readFileSync(file, 'utf8');
			var calls = fileContent.match(searchRegex);

			if (calls && calls.length > 0) {
				logger.debug(file + ': ' + calls.length + ' strings found.');

				_.each(calls, function(call) {
					var matches = call.match(valueRegex);
					strings.push(matches[1]);
				});
			}
		});

		strings = _.uniq(strings);
		logger.info('Found ' + strings.length + ' unique i18n strings in code. Checking against current i18n file...');
		return strings;
	} catch (e) {
		return [];
	}
}

module.exports = function(args, program) {
	paths = U.getAndValidateProjectPaths(
		program.outputPath || process.cwd()
	);
	var language = args[0] || 'en';
	logger.info('extract-i18n for "i18n/' + language + '/strings.xml"');

	var strings = extractStrings();
	var handler = i18nHandler(paths.project, language);
	var newStrings = handler.merge(strings);

	if (program.apply) {
		handler.write(newStrings);
	} else {
		handler.print(newStrings);
	}
};