source: trip-planner-front/node_modules/y18n/build/index.cjs@ 6a80231

Last change on this file since 6a80231 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 6.6 KB
Line 
1'use strict';
2
3var fs = require('fs');
4var util = require('util');
5var path = require('path');
6
7let shim;
8class Y18N {
9 constructor(opts) {
10 // configurable options.
11 opts = opts || {};
12 this.directory = opts.directory || './locales';
13 this.updateFiles = typeof opts.updateFiles === 'boolean' ? opts.updateFiles : true;
14 this.locale = opts.locale || 'en';
15 this.fallbackToLanguage = typeof opts.fallbackToLanguage === 'boolean' ? opts.fallbackToLanguage : true;
16 // internal stuff.
17 this.cache = Object.create(null);
18 this.writeQueue = [];
19 }
20 __(...args) {
21 if (typeof arguments[0] !== 'string') {
22 return this._taggedLiteral(arguments[0], ...arguments);
23 }
24 const str = args.shift();
25 let cb = function () { }; // start with noop.
26 if (typeof args[args.length - 1] === 'function')
27 cb = args.pop();
28 cb = cb || function () { }; // noop.
29 if (!this.cache[this.locale])
30 this._readLocaleFile();
31 // we've observed a new string, update the language file.
32 if (!this.cache[this.locale][str] && this.updateFiles) {
33 this.cache[this.locale][str] = str;
34 // include the current directory and locale,
35 // since these values could change before the
36 // write is performed.
37 this._enqueueWrite({
38 directory: this.directory,
39 locale: this.locale,
40 cb
41 });
42 }
43 else {
44 cb();
45 }
46 return shim.format.apply(shim.format, [this.cache[this.locale][str] || str].concat(args));
47 }
48 __n() {
49 const args = Array.prototype.slice.call(arguments);
50 const singular = args.shift();
51 const plural = args.shift();
52 const quantity = args.shift();
53 let cb = function () { }; // start with noop.
54 if (typeof args[args.length - 1] === 'function')
55 cb = args.pop();
56 if (!this.cache[this.locale])
57 this._readLocaleFile();
58 let str = quantity === 1 ? singular : plural;
59 if (this.cache[this.locale][singular]) {
60 const entry = this.cache[this.locale][singular];
61 str = entry[quantity === 1 ? 'one' : 'other'];
62 }
63 // we've observed a new string, update the language file.
64 if (!this.cache[this.locale][singular] && this.updateFiles) {
65 this.cache[this.locale][singular] = {
66 one: singular,
67 other: plural
68 };
69 // include the current directory and locale,
70 // since these values could change before the
71 // write is performed.
72 this._enqueueWrite({
73 directory: this.directory,
74 locale: this.locale,
75 cb
76 });
77 }
78 else {
79 cb();
80 }
81 // if a %d placeholder is provided, add quantity
82 // to the arguments expanded by util.format.
83 const values = [str];
84 if (~str.indexOf('%d'))
85 values.push(quantity);
86 return shim.format.apply(shim.format, values.concat(args));
87 }
88 setLocale(locale) {
89 this.locale = locale;
90 }
91 getLocale() {
92 return this.locale;
93 }
94 updateLocale(obj) {
95 if (!this.cache[this.locale])
96 this._readLocaleFile();
97 for (const key in obj) {
98 if (Object.prototype.hasOwnProperty.call(obj, key)) {
99 this.cache[this.locale][key] = obj[key];
100 }
101 }
102 }
103 _taggedLiteral(parts, ...args) {
104 let str = '';
105 parts.forEach(function (part, i) {
106 const arg = args[i + 1];
107 str += part;
108 if (typeof arg !== 'undefined') {
109 str += '%s';
110 }
111 });
112 return this.__.apply(this, [str].concat([].slice.call(args, 1)));
113 }
114 _enqueueWrite(work) {
115 this.writeQueue.push(work);
116 if (this.writeQueue.length === 1)
117 this._processWriteQueue();
118 }
119 _processWriteQueue() {
120 const _this = this;
121 const work = this.writeQueue[0];
122 // destructure the enqueued work.
123 const directory = work.directory;
124 const locale = work.locale;
125 const cb = work.cb;
126 const languageFile = this._resolveLocaleFile(directory, locale);
127 const serializedLocale = JSON.stringify(this.cache[locale], null, 2);
128 shim.fs.writeFile(languageFile, serializedLocale, 'utf-8', function (err) {
129 _this.writeQueue.shift();
130 if (_this.writeQueue.length > 0)
131 _this._processWriteQueue();
132 cb(err);
133 });
134 }
135 _readLocaleFile() {
136 let localeLookup = {};
137 const languageFile = this._resolveLocaleFile(this.directory, this.locale);
138 try {
139 // When using a bundler such as webpack, readFileSync may not be defined:
140 if (shim.fs.readFileSync) {
141 localeLookup = JSON.parse(shim.fs.readFileSync(languageFile, 'utf-8'));
142 }
143 }
144 catch (err) {
145 if (err instanceof SyntaxError) {
146 err.message = 'syntax error in ' + languageFile;
147 }
148 if (err.code === 'ENOENT')
149 localeLookup = {};
150 else
151 throw err;
152 }
153 this.cache[this.locale] = localeLookup;
154 }
155 _resolveLocaleFile(directory, locale) {
156 let file = shim.resolve(directory, './', locale + '.json');
157 if (this.fallbackToLanguage && !this._fileExistsSync(file) && ~locale.lastIndexOf('_')) {
158 // attempt fallback to language only
159 const languageFile = shim.resolve(directory, './', locale.split('_')[0] + '.json');
160 if (this._fileExistsSync(languageFile))
161 file = languageFile;
162 }
163 return file;
164 }
165 _fileExistsSync(file) {
166 return shim.exists(file);
167 }
168}
169function y18n$1(opts, _shim) {
170 shim = _shim;
171 const y18n = new Y18N(opts);
172 return {
173 __: y18n.__.bind(y18n),
174 __n: y18n.__n.bind(y18n),
175 setLocale: y18n.setLocale.bind(y18n),
176 getLocale: y18n.getLocale.bind(y18n),
177 updateLocale: y18n.updateLocale.bind(y18n),
178 locale: y18n.locale
179 };
180}
181
182var nodePlatformShim = {
183 fs: {
184 readFileSync: fs.readFileSync,
185 writeFile: fs.writeFile
186 },
187 format: util.format,
188 resolve: path.resolve,
189 exists: (file) => {
190 try {
191 return fs.statSync(file).isFile();
192 }
193 catch (err) {
194 return false;
195 }
196 }
197};
198
199const y18n = (opts) => {
200 return y18n$1(opts, nodePlatformShim);
201};
202
203module.exports = y18n;
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