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<?php |
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declare(strict_types = 1); |
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|
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namespace Gettext\Generator; |
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|
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use Gettext\Translation; |
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use Gettext\Translations; |
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|
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final class MoGenerator extends Generator |
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{ |
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private $includeHeaders = false; |
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|
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public function includeHeaders(bool $includeHeaders = true): self |
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{ |
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$this->includeHeaders = $includeHeaders; |
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|
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return $this; |
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} |
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|
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public function generateString(Translations $translations): string |
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{ |
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$messages = []; |
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|
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if ($this->includeHeaders) { |
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$lines = []; |
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|
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foreach ($translations->getHeaders() as $name => $value) { |
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$lines[] = sprintf('%s: %s', $name, $value); |
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} |
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|
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$messages[''] = implode("\n", $lines); |
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} |
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|
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foreach ($translations as $translation) { |
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if (!$translation->getTranslation() || $translation->isDisabled()) { |
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continue; |
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} |
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|
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if ($context = $translation->getContext()) { |
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$originalString = "{$context}\x04{$translation->getOriginal()}"; |
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} else { |
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$originalString = $translation->getOriginal(); |
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} |
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|
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$messages[$originalString] = $translation; |
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} |
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|
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ksort($messages, SORT_STRING); |
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$numEntries = count($messages); |
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$originalsTable = ''; |
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$translationsTable = ''; |
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$originalsIndex = []; |
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$translationsIndex = []; |
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$pluralForm = $translations->getHeaders()->getPluralForm(); |
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$pluralSize = is_array($pluralForm) ? ($pluralForm[0] - 1) : null; |
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|
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foreach ($messages as $originalString => $translation) { |
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if (is_string($translation)) { |
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$translationString = $translation; |
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} elseif (self::hasPluralTranslations($translation)) { |
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$originalString .= "\x00{$translation->getPlural()}"; |
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$translationString = "{$translation->getTranslation()}\x00" |
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.implode("\x00", $translation->getPluralTranslations($pluralSize)); |
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} else { |
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$translationString = $translation->getTranslation(); |
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} |
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|
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$originalsIndex[] = [ |
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'relativeOffset' => strlen($originalsTable), |
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'length' => strlen((string) $originalString), |
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]; |
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$originalsTable .= $originalString."\x00"; |
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$translationsIndex[] = [ |
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'relativeOffset' => strlen($translationsTable), |
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'length' => strlen($translationString), |
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]; |
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$translationsTable .= $translationString."\x00"; |
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} |
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|
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// Offset of table with the original strings index: right after the header (which is 7 words) |
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$originalsIndexOffset = 7 * 4; |
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|
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// Size of table with the original strings index |
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$originalsIndexSize = $numEntries * (4 + 4); |
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|
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// Offset of table with the translation strings index: right after the original strings index table |
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$translationsIndexOffset = $originalsIndexOffset + $originalsIndexSize; |
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|
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// Size of table with the translation strings index |
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$translationsIndexSize = $numEntries * (4 + 4); |
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|
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// Hashing table starts after the header and after the index table |
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$originalsStringsOffset = $translationsIndexOffset + $translationsIndexSize; |
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|
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// Translations start after the keys |
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$translationsStringsOffset = $originalsStringsOffset + strlen($originalsTable); |
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|
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// Let's generate the .mo file binary data |
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$mo = ''; |
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|
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// Magic number |
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$mo .= pack('L', 0x950412de); |
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|
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// File format revision |
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$mo .= pack('L', 0); |
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|
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// Number of strings |
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$mo .= pack('L', $numEntries); |
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|
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// Offset of table with original strings |
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$mo .= pack('L', $originalsIndexOffset); |
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|
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// Offset of table with translation strings |
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$mo .= pack('L', $translationsIndexOffset); |
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|
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// Size of hashing table: we don't use it. |
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$mo .= pack('L', 0); |
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|
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// Offset of hashing table: it would start right after the translations index table |
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$mo .= pack('L', $translationsIndexOffset + $translationsIndexSize); |
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|
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// Write the lengths & offsets of the original strings |
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foreach ($originalsIndex as $info) { |
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$mo .= pack('L', $info['length']); |
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$mo .= pack('L', $originalsStringsOffset + $info['relativeOffset']); |
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} |
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|
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// Write the lengths & offsets of the translated strings |
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foreach ($translationsIndex as $info) { |
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$mo .= pack('L', $info['length']); |
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$mo .= pack('L', $translationsStringsOffset + $info['relativeOffset']); |
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} |
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|
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// Write original strings |
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$mo .= $originalsTable; |
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|
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// Write translation strings |
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$mo .= $translationsTable; |
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|
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return $mo; |
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} |
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|
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private static function hasPluralTranslations(Translation $translation): bool |
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{ |
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if (!$translation->getPlural()) { |
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return false; |
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} |
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|
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return implode('', $translation->getPluralTranslations()) !== ''; |
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} |
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} |
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|
