141 lines
3.3 KiB
JavaScript
141 lines
3.3 KiB
JavaScript
var fs = require('fs')
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, util = require('util');
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var PO = function() {
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this.headers = {};
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this.items = [];
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};
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PO.prototype.save = function(filename, callback) {
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var lines = ['msgid ""', 'msgstr ""']
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, that = this;
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var keys = Object.keys(this.headers);
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keys.forEach(function(key){
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lines.push(util.format('"%s: %s\\n"', key, that.headers[key]));
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});
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lines.push('');
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this.items.forEach(function(item){
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lines.push(item.toString());
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lines.push('');
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});
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fs.writeFile(filename, lines.join("\n"), function(err){
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if (err) throw err;
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callback && callback();
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})
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};
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PO.load = function(filename, callback) {
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fs.readFile(filename, 'utf-8', function(err, data){
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if (err) throw err;
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var po = new PO
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, parts = data.split(/\n\n/)
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, headers = parts.shift().split(/\n/);
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headers.forEach(function(header){
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if (header.match(/^"/)) {
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header = header.trim().replace(/^"/, '').replace(/\\n"$/, '');
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var p = header.split(/:/)
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, name = p.shift().trim()
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, value = p.join(':').trim().replace(/n$/);
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po.headers[name] = value;
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}
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});
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parts.forEach(function(part){
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if (part.length < 1) return;
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var item = PO.Item.parse(part);
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po.items.push(item);
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});
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callback && callback(po);
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});
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};
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PO.Item = function() {
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this.msgid = null;
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this.references = [];
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this.msgid_plural = null;
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this.msgstr = [];
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};
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PO.Item.prototype.toString = function() {
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var lines = []
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, that = this;
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var _processEach = function(keyword, text, i) {
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var lines = []
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, parts = text.split(/\n/)
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, index = typeof i != 'undefined' ? util.format('[%d]', i) : '';
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if (parts.length > 1) {
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lines.push(util.format('%s%s ""', keyword, index));
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parts.forEach(function(part){
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lines.push(util.format('"%s"', part))
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});
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}
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else {
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lines.push(util.format('%s%s "%s"', keyword, index, text));
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}
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return lines;
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}
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if (this.references.length > 0) {
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this.references.forEach(function(ref){
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lines.push(util.format('#: %s', ref));
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});
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['msgid', 'msgid_plural', 'msgstr'].forEach(function(keyword){
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var text = that[keyword];
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if (text != null) {
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if (util.isArray(text) && text.length > 1) {
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text.forEach(function(t, i){
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lines = lines.concat(_processEach(keyword, t, i));
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});
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}
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else {
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text = util.isArray(text) ? text.join() : text;
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lines = lines.concat(_processEach(keyword, text));
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}
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}
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});
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};
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return lines.join("\n");
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};
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PO.Item.parse = function(chunk) {
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var item = new PO.Item();
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var parts = chunk.split(/\nmsg/);
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var _extract = function(string) {
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var lines = string.split(/\n/);
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var value = '';
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lines.forEach(function(line){
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var p = line.split(/"/); p.shift(); p.pop();
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value += "\n" + p.join('"');
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});
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return value.trim();
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};
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parts.forEach(function(part){
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if (part.match(/^#:/)) {
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item.references.push(part.replace(/^#:\s/, ''));
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}
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else if (part.match(/^id\s/)) {
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item.msgid = _extract(part);
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}
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else if (part.match(/id_plural/)) {
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item.msgid_plural = _extract(part);
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}
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else if (part.match(/str/)) {
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item.msgstr.push(_extract(part));
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}
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});
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return item;
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};
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module.exports = PO; |