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<?php /** * Sync/Merge utility akin to msgmerge */ class Loco_gettext_Matcher extends LocoFuzzyMatcher { /** * Whether copying translation from source references (normally for a POT we won't) * @var bool */ private $translate; /** * Number of translations pulled from source (when source is PO) * @var int */ private $translated; /** * @var Loco_package_Project */ private $project; /** * @var array[]|null */ private $hashes; public function __construct( Loco_package_Project $project ){ $this->project = $project; } /** * Initialize matcher with current valid source strings (ref.pot) * @param Loco_gettext_Data $pot POT reference * @param bool $translate Whether copying translations from reference data * @return int */ public function loadRefs( Loco_gettext_Data $pot, $translate = false ){ $ntotal = 0; $this->translate = (bool) $translate; $this->translated = 0; /* @var LocoPoMessage $new */ foreach( $pot as $new ){ $ntotal++; $this->add($new); } return $ntotal; } /** * Perform a reverse lookup for a file reference from its pre-computed hash */ private function findScript( $hash ){ $map = $this->hashes; // build full index of all script hashes under configured source locations. if( is_null($map) ){ $map = []; $scripts = clone $this->project->getSourceFinder(); $scripts->filterExtensions(['js']); $basepath = $this->project->getBundle()->getDirectoryPath(); /* @var Loco_fs_File $jsfile */ foreach( $scripts->export() as $jsfile ){ $ref = $jsfile->getRelativePath($basepath); if( substr($ref,-7) === '.min.js' ) { $ref = substr($ref,0,-7).'.js'; } $map[ md5($ref) ] = $ref; } $this->hashes = $map; } return array_key_exists($hash,$map) ? $map[$hash] : ''; } /** * Add further source strings from JSON/JED file * @param Loco_fs_File $file json file * @return int */ private function loadJson( Loco_fs_File $file ){ $unique = 0; $jed = json_decode( $file->getContents(), true ); if( ! is_array($jed) || ! array_key_exists('locale_data',$jed) || ! is_array($jed['locale_data']) ){ throw new Loco_error_Debug( $file->basename().' is not JED formatted'); } // without a file reference, strings will never be compiled back to the correct JSON. // if missing from JED, we'll attempt reverse match from scripts found on disk. $ref = array_key_exists('source',$jed) ? $jed['source'] : ''; if( '' === $ref || ! is_string($ref) ){ $name = $file->basename(); $ref = preg_match('/-([0-9a-f]{32})\\.json$/',$name,$r) ? $this->findScript($r[1]) : ''; if( '' === $ref ){ throw new Loco_error_Debug($name.' has no "source" key; script is unknown'); } // The hash is pre-computed and .js file is known to exist, so we'll skip filters here. // The compiler will still filter this reference, so it could potentially yield a different hash. Loco_error_AdminNotices::debug($name.' has no "source" key; reverse matched '.$ref); } // file reference most likely won't have a line number, as it applies to all strings in the JSON // As most deployed JavaScript will be minified, we probably only have one line anyway. // $ref .= ':1'; // not checking domain key. Should be valid if passed here and should only be one. foreach( $jed['locale_data'] as /*$domain =>*/ $keys ){ foreach( $keys as $msgid => $arr ){ if( '' === $msgid || ! is_array($arr) || ! isset($arr[0]) ){ continue; } $msgctxt = ''; // Unglue "msgctxt\4msgid" unique key $parts = explode("\4",$msgid,2); if( array_key_exists(1,$parts) ){ list($msgctxt,$msgid) = $parts; // TODO handle empty msgid case that uses weird "msgctxt\4(msgctxt)" format? } // string may exist in original template, and also in multiple JSONs. $new = ['source'=>$msgid,'context'=>$msgctxt,'refs'=>$ref ]; $old = $this->getArrayRef($new); if( $old ){ $refs = array_key_exists('refs',$old) ? (string) $old['refs'] : ''; if( '' === $refs ){ $old['refs'] = $ref; } else if( 0 === preg_match('/\\b'.preg_quote($ref,'/').'\\b/',$refs) ){ $old['refs'].= ' '.$ref; } $new = $old; } else { $unique++; } // Add translation from JSON only if not present in merged PO already if( $this->translate && ( ! array_key_exists('target',$new) || '' === $new['target'] ) ){ $new['target'] = $arr[0]; } $message = new LocoPoMessage($new); $this->add($message); // handle plurals, noting that msgid_plural is not stored in JED structure if( 1 < count($arr) ){ $index = 0; $plurals = $old && array_key_exists('plurals',$old) ? $old['plurals'] : []; while( array_key_exists(++$index,$arr) ){ if( array_key_exists($index,$plurals) ){ $raw = $plurals[$index]; if( $raw instanceof ArrayObject ){ $raw = $raw->getArrayCopy(); } } else { $raw = ['source'=>'','target'=>'']; } if( $this->translate && ( ! array_key_exists('target',$raw) || '' === $raw['target'] ) ){ $raw['target'] = $arr[$index]; } // use translation as missing msgid_plural only if msgid matches msgstr (English file) if( 1 === $index && '' === $raw['source'] ){ if( $arr[0] === $msgid ){ $raw['source'] = $arr[1]; } /*else { Loco_error_AdminNotices::debug('msgid_plural missing for msgid '.json_encode($msgid) ); }*/ } $plurals[$index] = new LocoPoMessage($raw); } $message['plurals'] = $plurals; } } } return $unique; } /** * Shortcut for loading multiple jsons with error tolerance * @param Loco_fs_File[] $jsons * @return int */ public function loadJsons( array $jsons ){ $n = 0; foreach( $jsons as $jsonfile ){ try { $n += $this->loadJson($jsonfile); } catch( Loco_error_Exception $e ){ Loco_error_AdminNotices::add($e); } } return $n; } /** * Update still-valid sources, deferring unmatched (new strings) for deferred fuzzy match * @param LocoPoIterator $original Existing definitions * @param LocoPoIterator $merged Resultant definitions * @return string[] keys matched exactly */ public function mergeValid( LocoPoIterator $original, LocoPoIterator $merged ){ $valid = []; $translate = $this->translate; /* @var LocoPoMessage $old */ foreach( $original as $old ){ $new = $this->match($old); // if existing source is still valid, merge any changes if( $new instanceof LocoPoMessage ){ $p = clone $old; $p->merge($new,$translate); $merged->push($p); $valid[] = $p->getKey(); // increment counter if translation was merged if( $translate && ! $old->translated() ){ $this->translated += $new->translated(); } } } return $valid; } /** * Perform fuzzy matching after all exact matches have been attempted * @param LocoPoIterator $merged Resultant definitions * @return string[] strings fuzzy-matched */ public function mergeFuzzy( LocoPoIterator $merged ){ $fuzzy = []; foreach( $this->getFuzzyMatches() as $pair ){ list($old,$new) = $pair; $p = clone $old; $p->merge($new); $merged->push($p); $fuzzy[] = $p->getKey(); } return $fuzzy; } /** * Add unmatched strings remaining as NEW source strings * @param LocoPoIterator $merged Resultant definitions to accept new strings * @return string[] strings added */ public function mergeAdded( LocoPoIterator $merged ){ $added = []; $translate = $this->translate; /* @var LocoPoMessage $new */ foreach( $this->unmatched() as $new ){ $p = clone $new; // remove translations unless configured to keep if( $p->translated() && ! $translate ){ $p->strip(); } $merged->push($p); $added[] = $p->getKey(); } return $added; } /** * Perform full merge and return result suitable from front end. * @param LocoPoIterator $original Existing definitions * @param LocoPoIterator $merged Resultant definitions * @return array result */ public function merge( LocoPoIterator $original, LocoPoIterator $merged ){ $this->mergeValid($original,$merged); $fuzzy = $this->mergeFuzzy($merged); $added = $this->mergeAdded($merged); /* @var LocoPoMessage $old */ $dropped = []; foreach( $this->redundant() as $old ){ $dropped[] = $old->getKey(); } // return to JavaScript with stats in the same form as old front end merge return [ 'add' => $added, 'fuz' => $fuzzy, 'del' => $dropped, 'trn' => $this->translated, ]; } /** * @param array $a * @return array */ private function getArrayRef( array $a ){ $r = $this->getRef($a); if( is_null($r) ){ return []; } if( $r instanceof ArrayObject ){ return $r->getArrayCopy(); } throw new Exception( (is_object($r)?get_class($r):gettype($r) ).' returned from '.get_class($this).'::getRef'); } }
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