Santhosh has uploaded a new change for review.
https://gerrit.wikimedia.org/r/175398
Change subject: MT: Introduce MTClient and all other MT clients inherit it
......................................................................
MT: Introduce MTClient and all other MT clients inherit it
This allows us to provide generic annotation mapping libraries from
parent MTClient class.
Apertium and Yandex code organized as classes
Change-Id: I5880060274856ad499d98089fbd65b732c284d37
---
M ContentTranslationService.js
M mt/Apertium.js
A mt/Apertium.languagenames.json
M mt/Yandex.js
D mt/mappings.js
M tests/mt/Apertium.test.js
6 files changed, 226 insertions(+), 382 deletions(-)
git pull ssh://gerrit.wikimedia.org:29418/mediawiki/services/cxserver
refs/changes/98/175398/1
diff --git a/ContentTranslationService.js b/ContentTranslationService.js
index 142a1de..095e9f9 100644
--- a/ContentTranslationService.js
+++ b/ContentTranslationService.js
@@ -117,7 +117,7 @@
return;
}
- mtClient = mtClients[ provider ];
+ mtClient = new mtClients[ provider ]();
sourceHtmlChunks = [ '<div>' ];
reqLength = 0;
diff --git a/mt/Apertium.js b/mt/Apertium.js
index 0c1f9bc..1ca46b2 100644
--- a/mt/Apertium.js
+++ b/mt/Apertium.js
@@ -1,309 +1,16 @@
-var apertiumLangMapping,
- Q = require( 'q' ),
+var Q = require( 'q' ),
+ util = require( 'util' ),
request = require( 'request' ),
conf = require( __dirname + '/../utils/Conf.js' ),
LinearDoc = require( '../lineardoc/LinearDoc' ),
- //logger = require( '../utils/Logger.js' ),
- // TODO: Tokenize properly. These work for English/Spanish/Catalan
- TOKENS =
/[\wáàçéèíïóòúüñÁÀÇÉÈÍÏÓÒÚÜÑ]+(?:[·'][\wáàçéèíïóòúüñÁÀÇÉÈÍÏÓÒÚÜÑ]+)?|[^\wáàçéèíïóòúüñÁÀÇÉÈÍÏÓÒÚÜÑ]+/g,
- IS_WORD =
/^[\wáàçéèíïóòúüñÁÀÇÉÈÍÏÓÒÚÜÑ]+(?:[·'][\wáàçéèíïóòúüñÁÀÇÉÈÍÏÓÒÚÜÑ]+)?$/;
+ MTClient = require( './MTClient.js' ),
+ apertiumLangMapping = require( './Apertium.languagenames.json' );
-apertiumLangMapping = require( __dirname + '/mappings.js' );
+function Apertium() {
-/**
- * Split text into tokens
- * @param {string} lang Language code
- * @param {string} text Text to split
- * @return {Object[]} List of tokens
- * @return[].text Text of the token
- * @return[].isWord Whether the token is a word
- */
-function getTokens( lang, text ) {
- // TODO: implement for other languages than English/Spanish/Catalan
- return text.match( TOKENS ).map( function ( tokenText ) {
- return {
- text: tokenText,
- isWord: !!tokenText.match( IS_WORD )
- };
- } );
}
-/**
- * Language-aware uppercasing
- * @param {string} lang Language code
- * @param {string} text Text to uppercase
- * @return {string} Upper-cased text (possibly identical)
- */
-function toUpperCase( lang, text ) {
- // stub: just use the javascript ASCII method for now
- return text.toUpperCase();
-}
-
-/**
- * Create variants of the text, with a different annotation uppercased in each.
- * @param {string} lang Language code
- * @param {string} text Text
- * @param {Object[]} annotationOffsets start and length of each annotation
- * @return {Object[]}
- * @return[].start {number} Start offset of uppercasing
- * @return[].length {number} Length of uppercasing
- * @return[].text {string} Text variant with uppercasing
- */
-function getCaseVariants( lang, sourceText, annotationOffsets ) {
- var i, len, offset, chunk, upperChunk, variantText,
- caseVariants = [];
-
- for ( i = 0, len = annotationOffsets.length; i < len; i++ ) {
- offset = annotationOffsets[ i ];
- chunk = sourceText.slice( offset.start, offset.start +
offset.length );
- upperChunk = toUpperCase( lang, chunk );
- if ( upperChunk === chunk ) {
- // Already uppercased; can't detect change
- continue;
- }
- variantText = [
- sourceText.slice( 0, offset.start ),
- upperChunk,
- sourceText.slice( offset.start + offset.length )
- ].join( '' );
- caseVariants.push( {
- start: offset.start,
- length: offset.length,
- text: variantText
- } );
- }
- return caseVariants;
-}
-
-/**
- * Finds offsets of ranges at which tokens have changed to uppercase
- * @param {string} text Original text
- * @param {string} text Changed text
- * @return {Object[]} start and length for each changed range
- */
-function getChangedCaseRanges( lang, originalText, changedText ) {
- var orig, upper, changed, len, ranges, start, startChar, end, endChar;
- orig = getTokens( lang, originalText );
- upper = getTokens( lang, toUpperCase( lang, originalText ) );
- changed = getTokens( lang, changedText );
-
- len = orig.length;
- if ( len !== upper.length || len !== changed.length ) {
- throw new Error( 'token length mismatch' );
- }
-
- // Find start/end of changed text token ranges. Track char ranges too,
and store these.
- ranges = [];
- // start token
- start = 0;
- // start char
- startChar = 0;
-
- while ( true ) {
- // Skip to first changed word token
- while ( start < len && (
- !( orig[ start ].isWord ) ||
- (
- orig[ start ].text === changed[ start ].text ||
- upper[ start ].text !== changed[ start ].text
- )
- ) ) {
- startChar += orig[ start ].text.length;
- start++;
- }
- if ( start >= len ) {
- break;
- }
- // Find last consecutive changed non-word token
- end = start;
- endChar = startChar + orig[ end ].text.length;
-
- while ( end < len && (
- !( orig[ end ].isWord ) ||
- (
- orig[ end ].text !== upper[ end ].text &&
- upper[ end ].text === changed[ end ].text
- )
- ) ) {
- end++;
- if ( end < len ) {
- endChar += orig[ end ].text.length;
- }
- }
- do {
- if ( end < len ) {
- endChar -= orig[ end ].text.length;
- }
- end--;
- } while ( !( orig[ end ].isWord ) );
- // Store ranges
- ranges.push( {
- start: startChar,
- length: endChar - startChar
- } );
- start = end + 1;
- startChar = endChar;
- }
- return ranges;
-}
-
-/**
- * Calculate range mappings based on the target text variants
- * @param {string} targetLang The target language
- * @param {Object[]} sourceVariants The start and length of each variation
- * @param {
- * @param {Object} annotationOffsets The start and length of each offset, by
sourceVariantId
- */
-function getRangeMappings( targetLang, sourceVariants, targetText, targetLines
) {
- var i, iLen, j, jLen, changedCaseRanges, sourceRange,
- rangeMappings = [];
- if ( sourceVariants.length !== targetLines.length ) {
- throw new Error( 'Translation variants length mismatch' );
- }
- for ( i = 0, iLen = sourceVariants.length; i < iLen; i++ ) {
- sourceRange = {
- start: sourceVariants[ i ].start,
- length: sourceVariants[ i ].length
- };
- changedCaseRanges = getChangedCaseRanges(
- targetLang,
- targetText,
- targetLines[ i ]
- );
- for ( j = 0, jLen = changedCaseRanges.length; j < jLen; j++ ) {
- rangeMappings.push( {
- source: sourceRange,
- target: changedCaseRanges[ j ]
- } );
- }
- }
- return rangeMappings;
-}
-
-/**
- * Translate plain text with Apertium API
- * @param {string} sourceLang Source language code
- * @param {string} targetLang Target language code
- * @param {string} sourceText Source language text
- * @return {Object} Deferred promise: Target language text
- */
-function translateTextApertium( sourceLang, targetLang, sourceText ) {
- var deferred = Q.defer(),
- postData;
-
- postData = {
- url: conf( 'mt.apertium.api' ) + '/translate',
- form: {
- markUnknown: 0,
- langpair: apertiumLangMapping[ sourceLang ] + '|' +
apertiumLangMapping[ targetLang ],
- format: 'txt',
- q: sourceText
- }
- };
- request.post( postData,
- function ( error, response, body ) {
- var message;
- if ( error ) {
- deferred.reject( new Error( error ) );
- return;
- }
- if ( response.statusCode !== 200 ) {
- message = 'Error ' + response.statusCode;
- message += ' sourceText={' + sourceText + '},
body={' + body + '}';
- deferred.reject( new Error( message ) );
- return;
- }
- deferred.resolve( JSON.parse( body
).responseData.translatedText );
- }
- );
- return deferred.promise;
-}
-
-/**
- * Translate multiple lines of plaintext with apertium
- * @param {string} sourceLang Source language code
- * @param {string} targetLang Target language code
- * @param {string[]} sourceLines Source plaintext lines
- * @return {Object} Deferred promise: Translated plaintext lines
- */
-function translateLinesApertium( sourceLang, targetLang, sourceLines ) {
- var sourceLinesText,
- deferred = Q.defer();
- // Join lines into single string. Separator must break sentences and
pass through unchanged
- sourceLinesText = sourceLines.join( '\n.CxServerApertium.\n' );
- translateTextApertium(
- sourceLang,
- targetLang,
- sourceLinesText
- ).then( function ( targetLinesText ) {
- var targetText = targetLinesText
- .replace( /^\s+|\s+$/g, '' )
- .split( /\n\.CxServerApertium\.\n/g );
- deferred.resolve( targetText );
- }, function ( error ) {
- deferred.reject( error );
- } );
- return deferred.promise;
-}
-
-/**
- * Translate text, using case variants to map tag offsets
- * @param {string} sourceLang Source language code
- * @param {string} targetLang Target language code
- * @param {string} sourceText Source plain text
- * @param {Object[]} tagOffsets start and length for each annotation chunk
- * @return {Object} Deferred promise: Translated plain text and range mappings
- */
-function translateTextWithTagOffsets( sourceLang, targetLang, sourceText,
tagOffsets ) {
- var sourceVariants, sourceLines, m, preSpace, postSpace,
trimmedSourceLines, deferred;
- sourceVariants = getCaseVariants( sourceLang, sourceText, tagOffsets );
- sourceLines = sourceVariants.map( function ( variant ) {
- return variant.text;
- } );
- sourceLines.splice( 0, 0, sourceText );
-
- // Don't push leading and trailing whitespace through Apertium
- m = sourceText.match( /^(\s*).*?(\s*)$/ );
- preSpace = m[ 1 ];
- postSpace = m[ 2 ];
- trimmedSourceLines = sourceLines.map( function ( line ) {
- return line.substring( preSpace.length, line.length -
postSpace.length );
- } );
-
- deferred = Q.defer();
- // Call apertium through module.exports, so tests can override it
- // Join segments with a string that will definitely break sentences and
be preserved
- module.exports.translateLinesApertium(
- sourceLang,
- targetLang,
- trimmedSourceLines
- ).then( function ( trimmedTargetLines ) {
- var targetLines, targetText, rangeMappings;
- targetLines = trimmedTargetLines.map( function (
trimmedTargetLine ) {
- return preSpace + trimmedTargetLine + postSpace;
- } );
- try {
- targetText = targetLines.splice( 0, 1 )[ 0 ];
- rangeMappings = getRangeMappings(
- targetLang,
- sourceVariants,
- targetText,
- targetLines
- );
- } catch ( ex ) {
- deferred.reject( ex );
- return;
- }
- deferred.resolve( {
- text: targetText,
- rangeMappings: rangeMappings
- } );
- }, function ( error ) {
- deferred.reject( error );
- } );
- return deferred.promise;
-}
-
+util.inherits( Apertium, MTClient );
/**
* Translate marked-up text
* @param {string} sourceLang Source language code
@@ -311,23 +18,24 @@
* @param {string} sourceText Source html
* @return {Object} Deferred promise: Translated html
*/
-function translate( sourceLang, targetLang, sourceHtml ) {
+Apertium.prototype.translate = function ( sourceLang, targetLang, sourceHtml )
{
var i, len, sourceDoc, targetDoc, itemPromises, deferred,
+ apertium = this,
parser = new LinearDoc.Parser();
+
parser.init();
parser.write( sourceHtml );
sourceDoc = parser.builder.doc;
// Clone and adapt sourceDoc
targetDoc = new LinearDoc.Doc( sourceDoc.wrapperTag );
itemPromises = [];
-
function translateItemDeferred( deferred, item ) {
itemPromises.push( deferred.promise );
if ( item.type !== 'textblock' ) {
deferred.resolve( item );
return;
}
- translateTextWithTagOffsets(
+ apertium.translateTextWithTagOffsets(
sourceLang,
targetLang,
item.item.getPlainText(),
@@ -359,11 +67,139 @@
}, function ( error ) {
deferred.reject( error );
} );
- return deferred.promise;
-}
-module.exports = {
- translate: translate,
- translateLinesApertium: translateLinesApertium,
- getTokens: getTokens
+ return deferred.promise;
};
+
+/**
+ * Translate text, using case variants to map tag offsets
+ * @param {string} sourceLang Source language code
+ * @param {string} targetLang Target language code
+ * @param {string} sourceText Source plain text
+ * @param {Object[]} tagOffsets start and length for each annotation chunk
+ * @return {Object} Deferred promise: Translated plain text and range mappings
+ */
+Apertium.prototype.translateTextWithTagOffsets = function ( sourceLang,
targetLang, sourceText, tagOffsets ) {
+ var sourceVariants, sourceLines, m, preSpace, postSpace,
trimmedSourceLines, deferred,
+ self = this;
+
+ sourceVariants = this.getCaseVariants( sourceLang, sourceText,
tagOffsets );
+ sourceLines = sourceVariants.map( function ( variant ) {
+ return variant.text;
+ } );
+ sourceLines.splice( 0, 0, sourceText );
+
+ // Don't push leading and trailing whitespace through Apertium
+ m = sourceText.match( /^(\s*).*?(\s*)$/ );
+ preSpace = m[ 1 ];
+ postSpace = m[ 2 ];
+ trimmedSourceLines = sourceLines.map( function ( line ) {
+ return line.substring( preSpace.length, line.length -
postSpace.length );
+ } );
+
+ deferred = Q.defer();
+ // Join segments with a string that will definitely break sentences and
be preserved
+ self.translateLines(
+ sourceLang,
+ targetLang,
+ trimmedSourceLines
+ ).then( function ( trimmedTargetLines ) {
+ var targetLines, targetText, rangeMappings;
+
+ targetLines = trimmedTargetLines.map( function (
trimmedTargetLine ) {
+ return preSpace + trimmedTargetLine + postSpace;
+ } );
+
+ try {
+ targetText = targetLines.splice( 0, 1 )[ 0 ];
+ rangeMappings = self.getRangeMappings(
+ targetLang,
+ sourceVariants,
+ targetText,
+ targetLines
+ );
+ } catch ( ex ) {
+ deferred.reject( ex );
+ return;
+ }
+ deferred.resolve( {
+ text: targetText,
+ rangeMappings: rangeMappings
+ } );
+ }, function ( error ) {
+ deferred.reject( error );
+ } );
+
+ return deferred.promise;
+};
+
+/**
+ * Translate multiple lines of plaintext with apertium
+ * @param {string} sourceLang Source language code
+ * @param {string} targetLang Target language code
+ * @param {string[]} sourceLines Source plaintext lines
+ * @return {Object} Deferred promise: Translated plaintext lines
+ */
+Apertium.prototype.translateLines = function ( sourceLang, targetLang,
sourceLines ) {
+ var sourceLinesText,
+ deferred = Q.defer();
+
+ // Join lines into single string. Separator must break sentences and
pass through unchanged
+ sourceLinesText = sourceLines.join( '\n.CxServerApertium.\n' );
+
+ this.translateText(
+ sourceLang,
+ targetLang,
+ sourceLinesText
+ ).then( function ( targetLinesText ) {
+ var targetText = targetLinesText
+ .replace( /^\s+|\s+$/g, '' )
+ .split( /\n\.CxServerApertium\.\n/g );
+ deferred.resolve( targetText );
+ }, function ( error ) {
+ deferred.reject( error );
+ } );
+ return deferred.promise;
+};
+
+/**
+ * Translate plain text with Apertium API
+ * @param {string} sourceLang Source language code
+ * @param {string} targetLang Target language code
+ * @param {string} sourceText Source language text
+ * @return {Object} Deferred promise: Target language text
+ */
+Apertium.prototype.translateText = function ( sourceLang, targetLang,
sourceText ) {
+ var deferred = Q.defer(),
+ postData;
+
+ postData = {
+ url: conf( 'mt.apertium.api' ) + '/translate',
+ form: {
+ markUnknown: 0,
+ langpair: apertiumLangMapping[ sourceLang ] + '|' +
apertiumLangMapping[ targetLang ],
+ format: 'txt',
+ q: sourceText
+ }
+ };
+ request.post( postData,
+ function ( error, response, body ) {
+ var message;
+
+ if ( error ) {
+ deferred.reject( new Error( error ) );
+ return;
+ }
+ if ( response.statusCode !== 200 ) {
+ message = 'Error ' + response.statusCode;
+ message += ' sourceText={' + sourceText + '},
body={' + body + '}';
+ deferred.reject( new Error( message ) );
+ return;
+ }
+ deferred.resolve( JSON.parse( body
).responseData.translatedText );
+ }
+ );
+ return deferred.promise;
+};
+
+module.exports = Apertium;
diff --git a/mt/Apertium.languagenames.json b/mt/Apertium.languagenames.json
new file mode 100644
index 0000000..945d63d
--- /dev/null
+++ b/mt/Apertium.languagenames.json
@@ -0,0 +1,38 @@
+{
+ "af": "afr",
+ "an": "arg",
+ "ar": "ara",
+ "bg": "bul",
+ "br": "bre",
+ "bs": "hbs_BS",
+ "ca": "cat",
+ "cr": "hbs_HR",
+ "cy": "cym",
+ "da": "dan",
+ "en": "eng",
+ "eo": "epo",
+ "es": "spa",
+ "eu": "eus",
+ "fr": "fra",
+ "gl": "glg",
+ "hr": "hbs_HR",
+ "id": "ind",
+ "is": "isl",
+ "it": "ita",
+ "kk": "kaz",
+ "la": "lat",
+ "mk": "mkd",
+ "ms": "msa",
+ "mt": "mlt",
+ "nb": "nob",
+ "nl": "nld",
+ "nn": "nno",
+ "oc": "oci",
+ "pt": "por",
+ "ro": "ron",
+ "sh": "hbs",
+ "sl": "slv",
+ "sr": "hbs_SR",
+ "sv": "swe",
+ "tt": "tat"
+}
\ No newline at end of file
diff --git a/mt/Yandex.js b/mt/Yandex.js
index 0e24008..1f40d88 100644
--- a/mt/Yandex.js
+++ b/mt/Yandex.js
@@ -1,31 +1,14 @@
-var errormap,
- Q = require( 'q' ),
+var Q = require( 'q' ),
request = require( 'request' ),
+ util = require( 'util' ),
+ MTClient = require( './MTClient.js' ),
conf = require( __dirname + '/../utils/Conf.js' );
-// http://api.yandex.com/translate/doc/dg/reference/translate.xml
-errormap = {
- 200: 'ERR_OK',
- 401: 'ERR_KEY_INVALID',
- 402: 'ERR_KEY_BLOCKED',
- 403: 'ERR_DAILY_REQ_LIMIT_EXCEEDED',
- 404: 'ERR_DAILY_CHAR_LIMIT_EXCEEDED',
- 413: 'ERR_TEXT_TOO_LONG',
- 422: 'ERR_UNPROCESSABLE_TEXT',
- 501: 'ERR_LANG_NOT_SUPPORTED'
-};
+function Yandex() {
-/**
- * Returns error name from error code.
- * @return {string}
- */
-function getErrorName( code ) {
- if ( code in errormap ) {
- return errormap[code];
- }
-
- return 'Unknown error';
}
+
+util.inherits( Yandex, MTClient );
/**
* Translate plain text with Yandex.
@@ -35,8 +18,9 @@
* @param {string} sourceText Source language text
* @return {Q.Promise} Target language text
*/
-function translate( sourceLang, targetLang, sourceText ) {
+Yandex.prototype.translate = function ( sourceLang, targetLang, sourceText ) {
var key, postData,
+ self = this,
deferred = Q.defer();
key = conf( 'mt.yandex.key' );
@@ -78,15 +62,37 @@
console.log( ret );
if ( ret.code !== 200 ) {
- deferred.reject( new Error( ret.code + ': ' +
getErrorName( ret.code ) ) );
+ deferred.reject( new Error( ret.code + ': ' +
self.getErrorName( ret.code ) ) );
}
- deferred.resolve( ret.text[0] );
+ deferred.resolve( ret.text[ 0 ] );
} );
return deferred.promise;
-}
-
-module.exports = {
- translate: translate
};
+
+/**
+ * Returns error name from error code.
+ * @return {string}
+ */
+Yandex.prototype.getErrorName = function ( code ) {
+ // http://api.yandex.com/translate/doc/dg/reference/translate.xml
+ var errormap = {
+ 200: 'ERR_OK',
+ 401: 'ERR_KEY_INVALID',
+ 402: 'ERR_KEY_BLOCKED',
+ 403: 'ERR_DAILY_REQ_LIMIT_EXCEEDED',
+ 404: 'ERR_DAILY_CHAR_LIMIT_EXCEEDED',
+ 413: 'ERR_TEXT_TOO_LONG',
+ 422: 'ERR_UNPROCESSABLE_TEXT',
+ 501: 'ERR_LANG_NOT_SUPPORTED'
+ };
+
+ if ( code in errormap ) {
+ return errormap[ code ];
+ }
+
+ return 'Unknown error';
+};
+
+module.exports = Yandex;
diff --git a/mt/mappings.js b/mt/mappings.js
deleted file mode 100644
index 330eb55..0000000
--- a/mt/mappings.js
+++ /dev/null
@@ -1,38 +0,0 @@
-module.exports = {
- af: 'afr',
- an: 'arg',
- ar: 'ara',
- bg: 'bul',
- br: 'bre',
- bs: 'hbs_BS',
- ca: 'cat',
- cr: 'hbs_HR',
- cy: 'cym',
- da: 'dan',
- en: 'eng',
- eo: 'epo',
- es: 'spa',
- eu: 'eus',
- fr: 'fra',
- gl: 'glg',
- hr: 'hbs_HR',
- id: 'ind',
- is: 'isl',
- it: 'ita',
- kk: 'kaz',
- la: 'lat',
- mk: 'mkd',
- ms: 'msa',
- mt: 'mlt',
- nb: 'nob',
- nl: 'nld',
- nn: 'nno',
- oc: 'oci',
- pt: 'por',
- ro: 'ron',
- sh: 'hbs',
- sl: 'slv',
- sr: 'hbs_SR',
- sv: 'swe',
- tt: 'tat'
-};
diff --git a/tests/mt/Apertium.test.js b/tests/mt/Apertium.test.js
index 7d2c5a9..d957a47 100644
--- a/tests/mt/Apertium.test.js
+++ b/tests/mt/Apertium.test.js
@@ -83,12 +83,13 @@
var textTranslations;
// Fake the actual Apertium call
- CX.Apertium.translateLinesApertium = function ( sourceLang, targetLang,
sourceLines ) {
+ CX.Apertium.prototype.translateLines = function ( sourceLang,
targetLang, sourceLines ) {
var deferred = Q.defer();
+
setTimeout( function () {
var targetLines;
try {
- sourceLines.map( function ( line ) {
+ targetLines = sourceLines.map( function ( line
) {
return textTranslations[ line ] || 'X'
+ line + 'X';
} );
deferred.resolve( targetLines );
@@ -102,7 +103,9 @@
QUnit.expect( tests.length );
function resumeTests( i ) {
- var test;
+ var test,
+ apertium = new CX.Apertium();
+
if ( i >= tests.length ) {
return;
}
@@ -110,8 +113,7 @@
textTranslations = test.textTranslations;
QUnit.stop();
-
- CX.Apertium.translate( 'xx', 'yy', test.source ).then( function
( target ) {
+ apertium.translate( 'en', 'es', test.source ).then( function (
target ) {
assert.strictEqual(
target,
test.target,
--
To view, visit https://gerrit.wikimedia.org/r/175398
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: I5880060274856ad499d98089fbd65b732c284d37
Gerrit-PatchSet: 1
Gerrit-Project: mediawiki/services/cxserver
Gerrit-Branch: master
Gerrit-Owner: Santhosh <santhosh.thottin...@gmail.com>
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