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Unified Diff: src/extensions/i18n/locale.js

Issue 23304005: Snapshot i18n Javascript code (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: updates Created 7 years, 4 months ago
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Index: src/extensions/i18n/locale.js
diff --git a/src/extensions/i18n/locale.js b/src/extensions/i18n/locale.js
deleted file mode 100644
index e4783277e64a63285251cf9215ea6c66bc86efec..0000000000000000000000000000000000000000
--- a/src/extensions/i18n/locale.js
+++ /dev/null
@@ -1,190 +0,0 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following
-// disclaimer in the documentation and/or other materials provided
-// with the distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived
-// from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-// limitations under the License.
-
-// ECMAScript 402 API implementation is broken into separate files for
-// each service. The build system combines them together into one
-// Intl namespace.
-
-/**
- * Canonicalizes the language tag, or throws in case the tag is invalid.
- */
-function canonicalizeLanguageTag(localeID) {
- // null is typeof 'object' so we have to do extra check.
- if (typeof localeID !== 'string' && typeof localeID !== 'object' ||
- localeID === null) {
- throw new TypeError('Language ID should be string or object.');
- }
-
- var localeString = String(localeID);
-
- if (isValidLanguageTag(localeString) === false) {
- throw new RangeError('Invalid language tag: ' + localeString);
- }
-
- // This call will strip -kn but not -kn-true extensions.
- // ICU bug filled - http://bugs.icu-project.org/trac/ticket/9265.
- // TODO(cira): check if -u-kn-true-kc-true-kh-true still throws after
- // upgrade to ICU 4.9.
- var tag = %CanonicalizeLanguageTag(localeString);
- if (tag === 'invalid-tag') {
- throw new RangeError('Invalid language tag: ' + localeString);
- }
-
- return tag;
-}
-
-
-/**
- * Returns an array where all locales are canonicalized and duplicates removed.
- * Throws on locales that are not well formed BCP47 tags.
- */
-function initializeLocaleList(locales) {
- var seen = [];
- if (locales === undefined) {
- // Constructor is called without arguments.
- seen = [];
- } else {
- // We allow single string localeID.
- if (typeof locales === 'string') {
- seen.push(canonicalizeLanguageTag(locales));
- return freezeArray(seen);
- }
-
- var o = toObject(locales);
- // Converts it to UInt32 (>>> is shr on 32bit integers).
- var len = o.length >>> 0;
-
- for (var k = 0; k < len; k++) {
- if (k in o) {
- var value = o[k];
-
- var tag = canonicalizeLanguageTag(value);
-
- if (seen.indexOf(tag) === -1) {
- seen.push(tag);
- }
- }
- }
- }
-
- return freezeArray(seen);
-}
-
-
-/**
- * Validates the language tag. Section 2.2.9 of the bcp47 spec
- * defines a valid tag.
- *
- * ICU is too permissible and lets invalid tags, like
- * hant-cmn-cn, through.
- *
- * Returns false if the language tag is invalid.
- */
-function isValidLanguageTag(locale) {
- // Check if it's well-formed, including grandfadered tags.
- if (LANGUAGE_TAG_RE.test(locale) === false) {
- return false;
- }
-
- // Just return if it's a x- form. It's all private.
- if (locale.indexOf('x-') === 0) {
- return true;
- }
-
- // Check if there are any duplicate variants or singletons (extensions).
-
- // Remove private use section.
- locale = locale.split(/-x-/)[0];
-
- // Skip language since it can match variant regex, so we start from 1.
- // We are matching i-klingon here, but that's ok, since i-klingon-klingon
- // is not valid and would fail LANGUAGE_TAG_RE test.
- var variants = [];
- var extensions = [];
- var parts = locale.split(/-/);
- for (var i = 1; i < parts.length; i++) {
- var value = parts[i];
- if (LANGUAGE_VARIANT_RE.test(value) === true && extensions.length === 0) {
- if (variants.indexOf(value) === -1) {
- variants.push(value);
- } else {
- return false;
- }
- }
-
- if (LANGUAGE_SINGLETON_RE.test(value) === true) {
- if (extensions.indexOf(value) === -1) {
- extensions.push(value);
- } else {
- return false;
- }
- }
- }
-
- return true;
- }
-
-
-/**
- * Builds a regular expresion that validates the language tag
- * against bcp47 spec.
- * Uses http://tools.ietf.org/html/bcp47, section 2.1, ABNF.
- * Runs on load and initializes the global REs.
- */
-(function() {
- var alpha = '[a-zA-Z]';
- var digit = '[0-9]';
- var alphanum = '(' + alpha + '|' + digit + ')';
- var regular = '(art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|' +
- 'zh-min|zh-min-nan|zh-xiang)';
- var irregular = '(en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|' +
- 'i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|' +
- 'i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE)';
- var grandfathered = '(' + irregular + '|' + regular + ')';
- var privateUse = '(x(-' + alphanum + '{1,8})+)';
-
- var singleton = '(' + digit + '|[A-WY-Za-wy-z])';
- LANGUAGE_SINGLETON_RE = new RegExp('^' + singleton + '$', 'i');
-
- var extension = '(' + singleton + '(-' + alphanum + '{2,8})+)';
-
- var variant = '(' + alphanum + '{5,8}|(' + digit + alphanum + '{3}))';
- LANGUAGE_VARIANT_RE = new RegExp('^' + variant + '$', 'i');
-
- var region = '(' + alpha + '{2}|' + digit + '{3})';
- var script = '(' + alpha + '{4})';
- var extLang = '(' + alpha + '{3}(-' + alpha + '{3}){0,2})';
- var language = '(' + alpha + '{2,3}(-' + extLang + ')?|' + alpha + '{4}|' +
- alpha + '{5,8})';
- var langTag = language + '(-' + script + ')?(-' + region + ')?(-' +
- variant + ')*(-' + extension + ')*(-' + privateUse + ')?';
-
- var languageTag =
- '^(' + langTag + '|' + privateUse + '|' + grandfathered + ')$';
- LANGUAGE_TAG_RE = new RegExp(languageTag, 'i');
-})();
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