matecat /
xliff-parser
| Total Complexity | 64 |
| Total Lines | 541 |
| Duplicated Lines | 0 % |
| Changes | 9 | ||
| Bugs | 0 | Features | 0 |
Complex classes like AbstractXliffReplacer often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use AbstractXliffReplacer, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 8 | abstract class AbstractXliffReplacer { |
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| 9 | protected $originalFP; |
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| 10 | protected $outputFP; // output stream pointer |
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| 11 | |||
| 12 | protected string $tuTagName; // <trans-unit> (forXliff v 1.*) or <unit> (forXliff v 2.*) |
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| 13 | protected bool $inTU = false; // flag to check whether we are in a <trans-unit> |
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| 14 | protected bool $inTarget = false; // flag to check whether we are in a <target>, to ignore everything |
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| 15 | protected bool $inAltTrans = false; // flag to check whether we are in an <alt-trans> (xliff 1.2) or <mtc:matches> (xliff 2.0) |
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| 16 | protected string $alternativeMatchesTag = ""; // polymorphic tag name for xliff 1.2 and 2.0 |
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| 17 | protected bool $isEmpty = false; // flag to check whether we are in an empty tag (<tag/>) |
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| 18 | protected bool $targetWasWritten = false; // flag to check is <target> was written in the current unit |
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| 19 | protected string $CDATABuffer = ""; // buffer for special tag |
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| 20 | protected string $namespace = ""; // Custom namespace |
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| 21 | protected bool $bufferIsActive = false; // flag for buffeting |
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| 22 | |||
| 23 | protected int $offset = 0; // offset for SAX pointer |
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| 24 | |||
| 25 | protected string $currentBuffer; // the current piece of text it's been parsed |
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| 26 | protected int $len; // length of the currentBuffer |
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| 27 | protected array $segments; // array of translations |
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| 28 | protected array $lastTransUnit = []; |
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| 29 | protected int $segmentInUnitPosition = 0; |
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| 30 | protected ?string $currentTransUnitId = null; // id of current <trans-unit> |
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| 31 | protected ?string $currentTransUnitIsTranslatable = null; // 'translate' attribute of current <trans-unit> |
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| 32 | protected bool $hasWrittenCounts = false; // check if <unit> already wrote segment counts (forXliff v 2.*) |
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| 33 | protected string $targetLang; |
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| 34 | protected bool $sourceInTarget = false; |
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| 35 | |||
| 36 | protected array $nodesToBuffer; |
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| 37 | |||
| 38 | protected array $transUnits; |
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| 39 | |||
| 40 | /** @var int */ |
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| 41 | protected int $xliffVersion; |
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| 42 | |||
| 43 | /** |
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| 44 | * @var XliffReplacerCallbackInterface|null |
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| 45 | */ |
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| 46 | protected ?XliffReplacerCallbackInterface $callback; |
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| 47 | |||
| 48 | protected ?LoggerInterface $logger; |
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| 49 | |||
| 50 | protected static string $INTERNAL_TAG_PLACEHOLDER; |
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| 51 | |||
| 52 | protected $counts = [ |
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| 53 | 'raw_word_count' => 0, |
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| 54 | 'eq_word_count' => 0, |
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| 55 | ]; |
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| 56 | |||
| 57 | protected $mrkTagsMap = []; |
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| 58 | |||
| 59 | /** |
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| 60 | * AbstractXliffReplacer constructor. |
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| 61 | * |
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| 62 | * @param string $originalXliffPath |
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| 63 | * @param int $xliffVersion |
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| 64 | * @param array $segments |
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| 65 | * @param array $transUnits |
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| 66 | * @param string $trgLang |
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| 67 | * @param string $outputFilePath |
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| 68 | * @param bool $setSourceInTarget |
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| 69 | * @param LoggerInterface|null $logger |
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| 70 | * @param XliffReplacerCallbackInterface|null $callback |
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| 71 | */ |
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| 72 | public function __construct( |
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| 73 | string $originalXliffPath, |
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| 74 | int $xliffVersion, |
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| 75 | array $segments, |
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| 76 | array $transUnits, |
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| 77 | string $trgLang, |
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| 78 | string $outputFilePath, |
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| 79 | bool $setSourceInTarget, |
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| 80 | LoggerInterface $logger = null, |
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| 81 | XliffReplacerCallbackInterface $callback = null |
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| 82 | ) { |
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| 83 | self::$INTERNAL_TAG_PLACEHOLDER = $this->getInternalTagPlaceholder(); |
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| 84 | $this->createOutputFileIfDoesNotExist( $outputFilePath ); |
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| 85 | $this->setFileDescriptors( $originalXliffPath, $outputFilePath ); |
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| 86 | $this->xliffVersion = $xliffVersion; |
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| 87 | $this->segments = $segments; |
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| 88 | $this->targetLang = $trgLang; |
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| 89 | $this->sourceInTarget = $setSourceInTarget; |
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| 90 | $this->transUnits = $transUnits; |
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| 91 | $this->logger = $logger; |
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| 92 | $this->callback = $callback; |
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| 93 | } |
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| 94 | |||
| 95 | public function replaceTranslation() { |
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| 96 | fwrite( $this->outputFP, '<?xml version="1.0" encoding="UTF-8"?>' ); |
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| 97 | |||
| 98 | //create Sax parser |
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| 99 | $xmlParser = $this->initSaxParser(); |
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| 100 | |||
| 101 | while ( $this->currentBuffer = fread( $this->originalFP, 4096 ) ) { |
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| 102 | /* |
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| 103 | preprocess file |
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| 104 | */ |
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| 105 | // obfuscate entities because sax automatically does html_entity_decode |
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| 106 | $temporary_check_buffer = preg_replace( "/&(.*?);/", self::$INTERNAL_TAG_PLACEHOLDER . '$1' . self::$INTERNAL_TAG_PLACEHOLDER, $this->currentBuffer ); |
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| 107 | |||
| 108 | //avoid cutting entities in half: |
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| 109 | //the last fread could have truncated an entity (say, '<' in '&l'), thus invalidating the escaping |
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| 110 | //***** and if there is an & that it is not an entity, this is an infinite loop !!!!! |
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| 111 | // 9 is the max length of an entity. So, suppose that the & is at the end of buffer, |
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| 112 | // add 9 Bytes and substitute the entities, if the & is present, and it is not at the end |
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| 113 | //it can't be an entity, exit the loop |
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| 114 | while ( true ) { |
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| 115 | $_ampPos = strpos( $temporary_check_buffer, '&' ); |
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| 116 | |||
| 117 | //check for real entity or escape it to safely exit from the loop!!! |
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| 118 | if ( $_ampPos === false || strlen( substr( $temporary_check_buffer, $_ampPos ) ) > 9 ) { |
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| 119 | break; |
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| 120 | } |
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| 121 | |||
| 122 | //if an entity is still present, fetch some more and repeat the escaping |
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| 123 | $this->currentBuffer .= fread( $this->originalFP, 9 ); |
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| 124 | $temporary_check_buffer = preg_replace( "/&(.*?);/", self::$INTERNAL_TAG_PLACEHOLDER . '$1' . self::$INTERNAL_TAG_PLACEHOLDER, $this->currentBuffer ); |
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| 125 | } |
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| 126 | |||
| 127 | //free stuff outside the loop |
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| 128 | unset( $temporary_check_buffer ); |
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| 129 | |||
| 130 | $this->currentBuffer = preg_replace( "/&(.*?);/", self::$INTERNAL_TAG_PLACEHOLDER . '$1' . self::$INTERNAL_TAG_PLACEHOLDER, $this->currentBuffer ); |
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| 131 | $this->currentBuffer = str_replace( "&", self::$INTERNAL_TAG_PLACEHOLDER . 'amp' . self::$INTERNAL_TAG_PLACEHOLDER, $this->currentBuffer ); |
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| 132 | |||
| 133 | //get length of chunk |
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| 134 | $this->len = strlen( $this->currentBuffer ); |
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| 135 | |||
| 136 | /* |
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| 137 | * Get the accumulated this->offset in the document: |
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| 138 | * as long as SAX pointer advances, we keep track of total bytes it has seen so far; |
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| 139 | * this way, we can translate its global pointer in an address local to the current buffer of text to retrieve the last char of tag |
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| 140 | */ |
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| 141 | $this->offset += $this->len; |
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| 142 | |||
| 143 | //parse chunk of text |
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| 144 | $this->runParser( $xmlParser ); |
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| 145 | |||
| 146 | } |
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| 147 | |||
| 148 | // close Sax parser |
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| 149 | $this->closeSaxParser( $xmlParser ); |
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| 150 | |||
| 151 | } |
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| 152 | |||
| 153 | /** |
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| 154 | * @param $xmlParser |
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| 155 | * |
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| 156 | * @return void |
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| 157 | */ |
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| 158 | protected function runParser( $xmlParser ) { |
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| 159 | //parse chunk of text |
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| 160 | if ( !xml_parse( $xmlParser, $this->currentBuffer, feof( $this->originalFP ) ) ) { |
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| 161 | //if unable, raise an exception |
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| 162 | throw new RuntimeException( sprintf( |
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| 163 | "XML error: %s at line %d", |
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| 164 | xml_error_string( xml_get_error_code( $xmlParser ) ), |
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| 165 | xml_get_current_line_number( $xmlParser ) |
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| 166 | ) ); |
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| 167 | } |
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| 168 | } |
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| 169 | |||
| 170 | /** |
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| 171 | * @param resource $parser |
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| 172 | * |
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| 173 | * @return string |
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| 174 | */ |
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| 175 | protected function getLastCharacter( $parser ): string { |
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| 176 | |||
| 177 | //this logic helps detecting empty tags |
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| 178 | //get current position of SAX pointer in all the stream of data is has read so far: |
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| 179 | //it points at the end of current tag |
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| 180 | $idx = xml_get_current_byte_index( $parser ); |
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| 181 | |||
| 182 | //check whether the bounds of current tag are entirely in current buffer or the end of the current tag |
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| 183 | //is outside current buffer (in the latter case, it's in next buffer to be read by the while loop); |
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| 184 | //this check is necessary because we may have truncated a tag in half with current read, |
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| 185 | //and the other half may be encountered in the next buffer it will be passed |
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| 186 | return $this->currentBuffer[ $idx - $this->offset ] ?? $this->currentBuffer[ $this->len - 1 ]; |
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| 187 | |||
| 188 | } |
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| 189 | |||
| 190 | /** |
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| 191 | * @return string |
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| 192 | */ |
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| 193 | private function getInternalTagPlaceholder(): string { |
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| 194 | return "§" . |
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| 195 | substr( |
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| 196 | str_replace( |
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| 197 | [ '+', '/' ], |
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| 198 | '', |
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| 199 | base64_encode( openssl_random_pseudo_bytes( 10, $_crypto_strong ) ) |
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| 200 | ), |
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| 201 | 0, |
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| 202 | 4 |
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| 203 | ); |
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| 204 | } |
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| 205 | |||
| 206 | private function createOutputFileIfDoesNotExist( string $outputFilePath ) { |
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| 207 | // create output file |
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| 208 | if ( !file_exists( $outputFilePath ) ) { |
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| 209 | touch( $outputFilePath ); |
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| 210 | } |
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| 211 | } |
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| 212 | |||
| 213 | /** |
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| 214 | * @param string $originalXliffPath |
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| 215 | * @param string $outputFilePath |
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| 216 | */ |
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| 217 | private function setFileDescriptors( string $originalXliffPath, string $outputFilePath ) { |
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| 218 | $this->outputFP = fopen( $outputFilePath, 'w+' ); |
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| 219 | |||
| 220 | $streamArgs = null; |
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| 221 | |||
| 222 | if ( !( $this->originalFP = fopen( $originalXliffPath, "r", false, stream_context_create( $streamArgs ) ) ) ) { |
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| 223 | throw new RuntimeException( "could not open XML input" ); |
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| 224 | } |
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| 225 | } |
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| 226 | |||
| 227 | /** |
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| 228 | * AbstractXliffReplacer destructor. |
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| 229 | */ |
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| 230 | public function __destruct() { |
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| 231 | //this stream can be closed outside the class |
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| 232 | //to permit multiple concurrent downloads, so suppress warnings |
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| 233 | if ( is_resource( $this->originalFP ) ) { |
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| 234 | fclose( $this->originalFP ); |
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| 235 | } |
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| 236 | |||
| 237 | if ( is_resource( $this->outputFP ) ) { |
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| 238 | fclose( $this->outputFP ); |
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| 239 | } |
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| 240 | |||
| 241 | } |
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| 242 | |||
| 243 | /** |
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| 244 | * Init Sax parser |
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| 245 | * |
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| 246 | * @return resource |
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| 247 | */ |
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| 248 | protected function initSaxParser() { |
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| 249 | $xmlSaxParser = xml_parser_create( 'UTF-8' ); |
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| 250 | xml_set_object( $xmlSaxParser, $this ); |
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| 251 | xml_parser_set_option( $xmlSaxParser, XML_OPTION_CASE_FOLDING, false ); |
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| 252 | xml_set_element_handler( $xmlSaxParser, 'tagOpen', 'tagClose' ); |
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| 253 | xml_set_character_data_handler( $xmlSaxParser, 'characterData' ); |
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| 254 | |||
| 255 | return $xmlSaxParser; |
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|
Bug
Best Practice
introduced
by
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| 256 | } |
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| 257 | |||
| 258 | /** |
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| 259 | * @param resource $xmlSaxParser |
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| 260 | */ |
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| 261 | protected function closeSaxParser( $xmlSaxParser ) { |
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| 262 | xml_parser_free( $xmlSaxParser ); |
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| 263 | } |
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| 264 | |||
| 265 | /** |
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| 266 | * @param resource $parser |
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| 267 | * @param string $name |
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| 268 | * @param array $attr |
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| 269 | * |
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| 270 | * @return mixed |
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| 271 | */ |
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| 272 | abstract protected function tagOpen( $parser, string $name, array $attr ); |
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| 273 | |||
| 274 | /** |
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| 275 | * @param resource $parser |
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| 276 | * @param string $name |
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| 277 | * |
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| 278 | * @return mixed |
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| 279 | */ |
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| 280 | abstract protected function tagClose( $parser, string $name ); |
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| 281 | |||
| 282 | /** |
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| 283 | * @param resource $parser |
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| 284 | * @param string $data |
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| 285 | * |
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| 286 | * @return mixed |
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| 287 | */ |
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| 288 | protected function characterData( $parser, string $data ): void { |
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| 294 | } |
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| 295 | } |
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| 296 | |||
| 297 | /** |
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| 298 | * postprocess escaped data and write to disk |
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| 299 | * |
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| 300 | * @param resource $fp |
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| 301 | * @param string $data |
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| 302 | * @param bool $treatAsCDATA |
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| 303 | * @param bool $parseMarks |
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| 304 | */ |
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| 305 | protected function postProcAndFlush($fp, string $data, bool $treatAsCDATA = false, $parseMarks = false ) { |
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| 306 | //postprocess string |
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| 307 | $data = preg_replace( "/" . self::$INTERNAL_TAG_PLACEHOLDER . '(.*?)' . self::$INTERNAL_TAG_PLACEHOLDER . "/", '&$1;', $data ); |
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| 308 | $data = str_replace( ' ', ' ', $data ); |
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| 309 | |||
| 310 | // extract <mrk> map only for <seg-source> tag |
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| 311 | if($parseMarks){ |
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| 312 | // check if there are spaces between <mrk> tags |
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| 313 | preg_match_all('/<mrk \b[^>]*>(.*?)<\/mrk>(\s+)/', $data, $spacesBetweenMrkCheck); |
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| 314 | |||
| 315 | if(!empty($spacesBetweenMrkCheck[0])){ |
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| 316 | |||
| 317 | // $spacesBetweenMrkCheck[0] // holds the complete tags |
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| 318 | // $spacesBetweenMrkCheck[1] // holds the text |
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| 319 | // $spacesBetweenMrkCheck[2] // holds the spaces |
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| 320 | |||
| 321 | foreach ($spacesBetweenMrkCheck[0] as $index => $mrk){ |
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| 322 | |||
| 323 | if($this instanceof Xliff20){ |
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| 324 | preg_match('/id="(\d+)"/', $mrk, $markMatch); |
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| 325 | } else { |
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| 326 | preg_match('/mid="(\d+)"/', $mrk, $markMatch); |
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| 327 | } |
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| 328 | |||
| 329 | if(isset($markMatch[1])){ |
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| 330 | |||
| 331 | if(!isset($this->mrkTagsMap[$this->currentTransUnitId])){ |
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| 332 | $this->mrkTagsMap[$this->currentTransUnitId] = []; |
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| 333 | } |
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| 334 | |||
| 335 | $this->mrkTagsMap[$this->currentTransUnitId][$markMatch[1]] = $spacesBetweenMrkCheck[2][$index]; |
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| 336 | } |
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| 337 | } |
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| 338 | } |
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| 339 | } |
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| 340 | |||
| 341 | if ( !$treatAsCDATA ) { |
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| 342 | //unix2dos |
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| 343 | $data = str_replace( "\r\n", "\r", $data ); |
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| 344 | $data = str_replace( "\n", "\r", $data ); |
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| 345 | $data = str_replace( "\r", "\r\n", $data ); |
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| 346 | } |
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| 347 | |||
| 348 | //flush to disk |
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| 349 | fwrite( $fp, $data ); |
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| 350 | } |
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| 351 | |||
| 352 | /** |
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| 353 | * @param string $name |
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| 354 | * @param array $attr |
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| 355 | * |
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| 356 | * @return void |
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| 357 | */ |
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| 358 | protected function handleOpenUnit( string $name, array $attr ) { |
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| 359 | |||
| 360 | // check if we are entering into a <trans-unit> (xliff v1.*) or <unit> (xliff v2.*) |
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| 361 | if ( $this->tuTagName === $name ) { |
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| 362 | $this->inTU = true; |
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| 363 | |||
| 364 | // get id |
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| 365 | // trim to first 100 characters because this is the limit on Matecat's DB |
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| 366 | $this->currentTransUnitId = substr( $attr[ 'id' ], 0, 100 ); |
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| 367 | |||
| 368 | // `translate` attribute can be only yes or no |
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| 369 | // current 'translate' attribute of the current trans-unit |
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| 370 | $this->currentTransUnitIsTranslatable = empty( $attr[ 'translate' ] ) ? 'yes' : $attr[ 'translate' ]; |
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| 371 | |||
| 372 | $this->setLastTransUnitSegments(); |
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| 373 | |||
| 374 | } |
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| 375 | } |
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| 376 | |||
| 377 | /** |
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| 378 | * @param string $name |
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| 379 | * @param array $attr |
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| 380 | * @param string $tag |
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| 381 | * |
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| 382 | * @return string |
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| 383 | */ |
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| 384 | protected function handleOpenXliffTag( string $name, array $attr, string $tag ): string { |
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| 385 | |||
| 386 | // Add MateCat specific namespace. |
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| 387 | // Add trgLang |
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| 388 | if ( $name === 'xliff' ) { |
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| 389 | if ( !array_key_exists( 'xmlns:' . $this->namespace, $attr ) ) { |
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| 390 | $tag .= ' xmlns:' . $this->namespace . '="https://www.matecat.com" '; |
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| 391 | } |
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| 392 | $tag = preg_replace( '/trgLang="(.*?)"/', 'trgLang="' . $this->targetLang . '"', $tag ); |
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| 393 | } |
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| 394 | |||
| 395 | return $tag; |
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| 396 | |||
| 397 | } |
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| 398 | |||
| 399 | /** |
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| 400 | * @param string $name |
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| 401 | * |
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| 402 | * @return void |
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| 403 | */ |
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| 404 | protected function checkSetInTarget( string $name ) { |
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| 405 | |||
| 406 | // check if we are entering into a <target> |
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| 407 | if ( 'target' == $name && !$this->inAltTrans ) { |
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| 408 | if ( $this->currentTransUnitIsTranslatable === 'no' ) { |
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| 409 | $this->inTarget = false; |
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| 410 | } else { |
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| 411 | $this->inTarget = true; |
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| 412 | } |
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| 413 | } |
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| 414 | |||
| 415 | } |
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| 416 | |||
| 417 | protected function trySetAltTrans( string $name ) { |
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| 418 | $this->inAltTrans = $this->inAltTrans || $this->alternativeMatchesTag == $name; |
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| 419 | } |
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| 420 | |||
| 421 | protected function tryUnsetAltTrans( string $name ) { |
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| 422 | if ( $this->alternativeMatchesTag == $name ) { |
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| 423 | $this->inAltTrans = false; |
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| 424 | } |
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| 425 | } |
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| 426 | |||
| 427 | /** |
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| 428 | * @param string $name |
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| 429 | * |
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| 430 | * @return void |
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| 431 | */ |
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| 432 | protected function setInBuffer( string $name ) { |
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| 433 | if ( in_array( $name, $this->nodesToBuffer ) ) { |
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| 434 | $this->bufferIsActive = true; |
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| 435 | } |
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| 436 | |||
| 437 | // We need bufferIsActive for <target> nodes with currentTransUnitIsTranslatable = 'NO' |
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| 438 | // because in the other case, the target can be chunked into pieces by xml_set_character_data_handler() |
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| 439 | // and this can potentially lead to a wrong string rebuild by postProcAndFlush function if the internal placeholders are split |
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| 440 | if($name === 'target' and $this->currentTransUnitIsTranslatable === 'no'){ |
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| 441 | $this->bufferIsActive = true; |
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| 442 | } |
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| 443 | } |
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| 444 | |||
| 445 | /** |
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| 446 | * @param array $seg |
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| 447 | */ |
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| 448 | protected function updateSegmentCounts( array $seg = [] ) { |
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| 460 | } |
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| 461 | |||
| 462 | protected function resetCounts() { |
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| 463 | $this->counts[ 'segments_count_array' ] = []; |
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| 464 | $this->counts[ 'raw_word_count' ] = 0; |
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| 465 | $this->counts[ 'eq_word_count' ] = 0; |
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| 466 | } |
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| 467 | |||
| 468 | /** |
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| 469 | * @param resource $parser |
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| 470 | * @param string $tag |
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| 471 | * |
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| 472 | * @return void |
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| 473 | */ |
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| 474 | protected function checkForSelfClosedTagAndFlush( $parser, string $tag ) { |
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| 475 | |||
| 476 | $lastChar = $this->getLastCharacter( $parser ); |
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| 477 | |||
| 478 | //trim last space |
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| 479 | $tag = rtrim( $tag ); |
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| 480 | |||
| 481 | //detect empty tag |
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| 482 | $this->isEmpty = $lastChar == '/'; |
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| 483 | if ( $this->isEmpty ) { |
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| 484 | $tag .= $lastChar; |
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| 485 | } |
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| 486 | |||
| 487 | //add tag ending |
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| 488 | $tag .= ">"; |
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| 489 | |||
| 490 | //set a Buffer for the segSource Source tag |
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| 491 | if ( $this->bufferIsActive ) { // we are opening a critical CDATA section |
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| 492 | //these are NOT source/seg-source/value empty tags, THERE IS A CONTENT, write it in buffer |
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| 493 | $this->CDATABuffer .= $tag; |
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| 494 | } else { |
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| 495 | $this->postProcAndFlush( $this->outputFP, $tag ); |
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| 496 | } |
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| 497 | |||
| 498 | } |
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| 499 | |||
| 500 | /** |
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| 501 | * A trans-unit can contain a list of segments because of mrk tags |
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| 502 | * Copy the segment's list for this trans-unit in a different structure |
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| 503 | * |
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| 504 | * @return void |
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| 505 | */ |
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| 506 | protected function setLastTransUnitSegments() { |
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| 507 | |||
| 508 | /* |
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| 509 | * At the end of every cycle the segment grouping information is lost: unset( 'matecat|' . $this->currentId ) |
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| 510 | * |
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| 511 | * We need to take the info about the last segment parsed |
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| 512 | * ( normally more than 1 db row because of mrk tags ) |
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| 513 | * |
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| 514 | * So, copy the current segment data group into another structure to keep the last segment |
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| 515 | * for the next tagOpen ( possible sdl:seg-defs ) |
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| 516 | * |
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| 517 | */ |
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| 518 | $this->lastTransUnit = []; |
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| 519 | |||
| 520 | if ( !isset( $this->transUnits[ $this->currentTransUnitId ] ) ) { |
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| 521 | return; |
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| 522 | } |
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| 523 | |||
| 524 | $listOfSegmentsIds = $this->transUnits[ $this->currentTransUnitId ]; |
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| 525 | $last_value = null; |
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| 526 | $segmentsCount = count( $listOfSegmentsIds ); |
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| 527 | for ( $i = 0; $i < $segmentsCount; $i++ ) { |
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| 528 | $id = $listOfSegmentsIds[ $i ]; |
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| 529 | if ( isset( $this->segments[ $id ] ) && ( $i == 0 || $last_value + 1 == $listOfSegmentsIds[ $i ] ) ) { |
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| 530 | $last_value = $listOfSegmentsIds[ $i ]; |
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| 531 | $this->lastTransUnit[] = $this->segments[ $id ]; |
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| 532 | } |
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| 533 | } |
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| 534 | } |
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| 535 | |||
| 536 | /** |
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| 537 | * @return array |
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| 538 | */ |
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| 539 | protected function getCurrentSegment(): array { |
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| 549 | } |
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| 550 | } |
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