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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace MediaWiki\Extension\Translate\WebService; |
| 5 | |
| 6 | use MediaWiki\Json\FormatJson; |
| 7 | |
| 8 | /** |
| 9 | * Implements support Caighdean translator api. |
| 10 | * @author Niklas Laxström |
| 11 | * @license GPL-2.0-or-later |
| 12 | * @ingroup TranslationWebService |
| 13 | * @since 2017.04 |
| 14 | * @see https://github.com/kscanne/caighdean/blob/master/API.md |
| 15 | */ |
| 16 | class CaighdeanWebService extends TranslationWebService { |
| 17 | /** @inheritDoc */ |
| 18 | public function getType(): string { |
| 19 | return 'mt'; |
| 20 | } |
| 21 | |
| 22 | /** @inheritDoc */ |
| 23 | protected function mapCode( string $code ): string { |
| 24 | return $code; |
| 25 | } |
| 26 | |
| 27 | /** @inheritDoc */ |
| 28 | protected function doPairs(): array { |
| 29 | $pairs = [ |
| 30 | 'gd' => [ 'ga' => true ], |
| 31 | 'gv' => [ 'ga' => true ], |
| 32 | ]; |
| 33 | |
| 34 | return $pairs; |
| 35 | } |
| 36 | |
| 37 | /** @inheritDoc */ |
| 38 | protected function getQuery( string $text, string $sourceLanguage, string $targetLanguage ): TranslationQuery { |
| 39 | if ( !isset( $this->config['url'] ) ) { |
| 40 | throw new TranslationWebServiceConfigurationException( '`url` not set in configuration' ); |
| 41 | } |
| 42 | |
| 43 | $text = trim( $text ); |
| 44 | if ( $text === '' ) { |
| 45 | throw new TranslationWebServiceInvalidInputException( 'Input is empty' ); |
| 46 | } |
| 47 | |
| 48 | $data = wfArrayToCgi( [ |
| 49 | 'foinse' => $sourceLanguage, |
| 50 | 'teacs' => $text, |
| 51 | ] ); |
| 52 | |
| 53 | // Maximum payload is 16 KiB. Based ont testing 16000 bytes is safe by leaving 224 |
| 54 | // bytes for other things. |
| 55 | if ( strlen( $data ) > 16000 ) { |
| 56 | throw new TranslationWebServiceInvalidInputException( 'Input is over 16000 bytes long' ); |
| 57 | } |
| 58 | |
| 59 | return TranslationQuery::factory( $this->config['url'] ) |
| 60 | ->timeout( intval( $this->config['timeout'] ) ) |
| 61 | ->postWithData( $data ) |
| 62 | ->attachProcessingInstructions( $text ); |
| 63 | } |
| 64 | |
| 65 | /** @inheritDoc */ |
| 66 | protected function parseResponse( TranslationQueryResponse $reply ): string { |
| 67 | $body = $reply->getBody(); |
| 68 | $response = FormatJson::decode( $body ); |
| 69 | if ( !is_array( $response ) ) { |
| 70 | throw new TranslationWebServiceException( 'Invalid json: ' . serialize( $body ) ); |
| 71 | } |
| 72 | |
| 73 | $text = ''; |
| 74 | $originalText = $reply->getQuery()->getProcessingInstructions(); |
| 75 | foreach ( $response as [ $sourceToken, $targetToken ] ) { |
| 76 | $separator = ' '; |
| 77 | $pos = strpos( $originalText, $sourceToken ); |
| 78 | // Try to keep the effects local. If we fail to match at token, we could accidentally |
| 79 | // scan very far ahead in the text, find a false match and not find matches for all |
| 80 | // of the tokens in the between. |
| 81 | if ( $pos !== false && $pos < 50 ) { |
| 82 | // Remove the portion of text we have processed. $pos should be zero, unless |
| 83 | // we failed to match something earlier. |
| 84 | $originalText = substr( $originalText, $pos + strlen( $sourceToken ) ); |
| 85 | if ( preg_match( '/^\s+/', $originalText, $match ) ) { |
| 86 | $separator = $match[ 0 ]; |
| 87 | $originalText = substr( $originalText, strlen( $separator ) ); |
| 88 | } else { |
| 89 | $separator = ''; |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | $text .= $targetToken . $separator; |
| 94 | } |
| 95 | |
| 96 | return $text; |
| 97 | } |
| 98 | } |