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<?php |
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namespace Sepia\PoParser; |
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use Sepia\PoParser\Catalog\Catalog; |
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use Sepia\PoParser\Catalog\Entry; |
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use Sepia\PoParser\Catalog\Header; |
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class PoCompiler |
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{ |
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const TOKEN_OBSOLETE = '#~ '; |
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/** @var int */ |
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protected $wrappingColumn; |
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/** @var string */ |
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protected $lineEnding; |
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/** |
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* PoCompiler constructor. |
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* |
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* @param int $wrappingColumn |
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* @param string $lineEnding |
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*/ |
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public function __construct($wrappingColumn = 80, $lineEnding = "\n") |
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{ |
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$this->wrappingColumn = $wrappingColumn; |
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$this->lineEnding = $lineEnding; |
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} |
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/** |
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* Compiles entries into a string |
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* |
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* @param Catalog $catalog |
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* |
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* @return string |
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* @throws \Exception |
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* @todo Write obsolete messages at the end of the file. |
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*/ |
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public function compile(Catalog $catalog) |
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{ |
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$output = ''; |
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if (count($catalog->getHeaders()) > 0) { |
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$output .= 'msgid ""'.$this->eol(); |
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$output .= 'msgstr ""'.$this->eol(); |
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foreach ($catalog->getHeaders() as $header) { |
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$output .= $header.$this->eol(); |
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} |
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$output .= $this->eol(); |
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} |
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$entriesCount = count($catalog->getEntries()); |
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$counter = 0; |
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foreach ($catalog->getEntries() as $entry) { |
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if ($entry->isObsolete() === false) { |
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$output .= $this->buildPreviousEntry($entry); |
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$output .= $this->buildTranslatorComment($entry); |
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$output .= $this->buildDeveloperComment($entry); |
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$output .= $this->buildReference($entry); |
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} |
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$output .= $this->buildFlags($entry); |
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// if (isset($entry['@'])) { |
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// $output .= "#@ ".$entry['@'].$this->eol(); |
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// } |
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$output .= $this->buildContext($entry); |
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$output .= $this->buildMsgId($entry); |
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$output .= $this->buildMsgIdPlural($entry); |
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$output .= $this->buildMsgStr($entry, $catalog->getHeader()); |
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$counter++; |
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// Avoid inserting an extra newline at end of file |
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if ($counter < $entriesCount) { |
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$output .= $this->eol(); |
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} |
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} |
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return $output; |
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} |
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/** |
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* @return string |
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*/ |
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protected function eol() |
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{ |
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return $this->lineEnding; |
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} |
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/** |
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* @param $entry |
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* |
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* @return string |
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*/ |
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protected function buildPreviousEntry(Entry $entry) |
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{ |
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$previous = $entry->getPreviousEntry(); |
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if ($previous === null) { |
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return ''; |
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} |
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return '#| msgid '.$this->cleanExport($previous->getMsgId()).$this->eol(); |
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} |
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/** |
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* @param $entry |
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* |
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* @return string |
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*/ |
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protected function buildTranslatorComment(Entry $entry) |
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{ |
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if ($entry->getTranslatorComments() === null) { |
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return ''; |
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} |
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$output = ''; |
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foreach ($entry->getTranslatorComments() as $comment) { |
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$output .= '# '.$comment.$this->eol(); |
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} |
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return $output; |
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} |
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protected function buildDeveloperComment(Entry $entry) |
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{ |
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if ($entry->getDeveloperComments() === null) { |
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return ''; |
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} |
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$output = ''; |
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foreach ($entry->getDeveloperComments() as $comment) { |
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$output .= '#. '.$comment.$this->eol(); |
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} |
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return $output; |
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} |
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protected function buildReference(Entry $entry) |
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{ |
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$reference = $entry->getReference(); |
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if ($reference === null || count($reference) === 0) { |
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return ''; |
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} |
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$output = ''; |
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foreach ($reference as $ref) { |
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$output .= '#: '.$ref.$this->eol(); |
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} |
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return $output; |
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} |
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protected function buildFlags(Entry $entry) |
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{ |
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$flags = $entry->getFlags(); |
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if ($flags === null || count($flags) === 0) { |
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return ''; |
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} |
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return '#, '.implode(', ', $flags).$this->eol(); |
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} |
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protected function buildContext(Entry $entry) |
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{ |
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if ($entry->getMsgCtxt() === null) { |
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return ''; |
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} |
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return |
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($entry->isObsolete() ? '#~ ' : ''). |
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'msgctxt '.$this->cleanExport($entry->getMsgCtxt()).$this->eol(); |
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} |
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protected function buildMsgId(Entry $entry) |
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{ |
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if ($entry->getMsgId() === null) { |
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return ''; |
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} |
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return $this->buildProperty('msgid', $entry->getMsgId(), $entry->isObsolete()); |
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} |
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protected function buildMsgStr(Entry $entry, Header $headers) |
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{ |
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$value = $entry->getMsgStr(); |
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$plurals = $entry->getMsgStrPlurals(); |
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if ($value === null && $plurals === null) { |
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return ''; |
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} |
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if ($entry->isPlural()) { |
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$output = ''; |
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$nPlurals = $headers->getPluralFormsCount(); |
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$pluralsFound = count($plurals); |
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$maxIterations = max($nPlurals, $pluralsFound); |
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for ($i = 0; $i < $maxIterations; $i++) { |
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$value = isset($plurals[$i]) ? $plurals[$i] : ''; |
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$output .= 'msgstr['.$i.'] '.$this->cleanExport($value).$this->eol(); |
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} |
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return $output; |
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} |
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return $this->buildProperty('msgstr', $value, $entry->isObsolete()); |
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} |
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/** |
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* @param Entry $entry |
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* |
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* @return string |
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*/ |
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protected function buildMsgIdPlural(Entry $entry) |
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{ |
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$value = $entry->getMsgIdPlural(); |
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if ($value === null) { |
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return ''; |
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} |
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return 'msgid_plural '.$this->cleanExport($value).$this->eol(); |
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} |
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protected function buildProperty($property, $value, $obsolete = false) |
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{ |
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$tokens = $this->wrapString($value); |
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$output = ''; |
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if (count($tokens) > 1) { |
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array_unshift($tokens, ''); |
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} |
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foreach ($tokens as $i => $token) { |
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$output .= $obsolete ? self::TOKEN_OBSOLETE : ''; |
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$output .= ($i === 0) ? $property.' ' : ''; |
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$output .= $this->cleanExport($token).$this->eol(); |
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} |
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return $output; |
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} |
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/** |
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* Prepares a string to be outputed into a file. |
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* |
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* @param string $string The string to be converted. |
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* |
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* @return string |
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*/ |
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protected function cleanExport($string) |
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{ |
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$quote = '"'; |
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$slash = '\\'; |
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$newline = "\n"; |
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$replaces = array( |
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"$slash" => "$slash$slash", |
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"$quote" => "$slash$quote", |
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"\t" => '\t', |
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); |
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$string = str_replace(array_keys($replaces), array_values($replaces), $string); |
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$po = $quote.implode("${slash}n$quote$newline$quote", explode($newline, $string)).$quote; |
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// remove empty strings |
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return str_replace("$newline$quote$quote", '', $po); |
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} |
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/** |
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* @param string $value |
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* |
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* @return array |
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*/ |
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private function wrapString($value) |
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{ |
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if (strlen($value) > $this->wrappingColumn) { |
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$tokens = str_split($value, $this->wrappingColumn); |
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} else { |
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$tokens = array($value); |
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} |
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return $tokens; |
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} |
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} |
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