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<?php
/**
* AppleFFS class implements support for Apple .strings files.
* This class reads and writes only UTF-8 files.
*
* This class has not yet been battle-tested, so beware.
*
* @author Brion Vibber <bvibber@wikimedia.org>
*
* @ingroup FFS
* @since 2014.02
*/
class AppleFFS extends SimpleFFS {
public function supportsFuzzy() {
return 'write';
}
public function getFileExtensions() {
return [ '.strings' ];
}
/**
* @param string $data
* @return array Parsed data.
* @throws MWException
*/
public function readFromVariable( $data ) {
$lines = explode( "\n", $data );
$authors = $messages = [];
$linecontinuation = false;
$value = '';
foreach ( $lines as $line ) {
if ( $linecontinuation ) {
$linecontinuation = false;
$valuecont = $line;
$value .= $valuecont;
} else {
if ( $line === '' ) {
continue;
}
if ( substr( $line, 0, 2 ) === '//' ) {
// Single-line comment
$match = [];
$ok = preg_match( '~//\s*Author:\s*(.*)~', $line, $match );
if ( $ok ) {
$authors[] = $match[1];
}
continue;
}
if ( substr( $line, 0, 2 ) === '/*' ) {
if ( strpos( $line, '*/', 2 ) === false ) {
$linecontinuation = true;
}
continue;
}
list( $key, $value ) = self::readRow( $line );
$messages[$key] = $value;
}
}
$messages = $this->group->getMangler()->mangle( $messages );
return [
'AUTHORS' => $authors,
'MESSAGES' => $messages,
];
}
/**
* Parses non-empty strings file row to key and value.
* @param string $line
* @throws MWException
* @return array array( string $key, string $val )
*/
public static function readRow( $line ) {
$match = [];
if ( preg_match( '/^"((?:\\\"|[^"])*)"\s*=\s*"((?:\\\"|[^"])*)"\s*;\s*$/', $line, $match ) ) {
$key = self::unescapeString( $match[1] );
$value = self::unescapeString( $match[2] );
if ( $key === '' ) {
throw new MWException( "Empty key in line $line" );
}
return [ $key, $value ];
} else {
throw new MWException( "Unrecognized line format: $line" );
}
}
/**
* @param MessageCollection $collection
* @return string
*/
protected function writeReal( MessageCollection $collection ) {
$header = $this->doHeader( $collection );
$header .= $this->doAuthors( $collection );
$header .= "\n";
$output = '';
$mangler = $this->group->getMangler();
/**
* @var TMessage $m
*/
foreach ( $collection as $key => $m ) {
$value = $m->translation();
$value = str_replace( TRANSLATE_FUZZY, '', $value );
if ( $value === '' ) {
continue;
}
// Just to give an overview of translation quality.
if ( $m->hasTag( 'fuzzy' ) ) {
$output .= "// Fuzzy\n";
}
$key = $mangler->unmangle( $key );
$output .= self::writeRow( $key, $value );
}
if ( $output ) {
$data = $header . $output;
} else {
$data = $header;
}
return $data;
}
/**
* Writes well-formed properties file row with key and value.
* @param string $key
* @param string $value
* @return string
*/
public static function writeRow( $key, $value ) {
return self::quoteString( $key ) . ' = ' . self::quoteString( $value ) . ';' . "\n";
}
/**
* Quote and escape Obj-C-style strings for .strings format.
*
* @param string $str
* @return string
*/
protected static function quoteString( $str ) {
return '"' . self::escapeString( $str ) . '"';
}
/**
* Escape Obj-C-style strings; use backslash-escapes etc.
*
* @param string $str
* @return string
*/
protected static function escapeString( $str ) {
$str = addcslashes( $str, '\\"' );
$str = str_replace( "\n", '\\n', $str );
return $str;
}
/**
* Unescape Obj-C-style strings; can include backslash-escapes
*
* @todo support \UXXXX
*
* @param string $str
* @return string
*/
protected static function unescapeString( $str ) {
return stripcslashes( $str );
}
/**
* @param MessageCollection $collection
* @return string
*/
protected function doHeader( MessageCollection $collection ) {
if ( isset( $this->extra['header'] ) ) {
$output = $this->extra['header'];
} else {
global $wgSitename;
$code = $collection->code;
$name = TranslateUtils::getLanguageName( $code );
$native = TranslateUtils::getLanguageName( $code, $code );
$output = "// Messages for $name ($native)\n";
$output .= "// Exported from $wgSitename\n";
}
return $output;
}
/**
* @param MessageCollection $collection
* @return string
*/
protected function doAuthors( MessageCollection $collection ) {
$output = '';
$authors = $collection->getAuthors();
$authors = $this->filterAuthors( $authors, $collection->code );
foreach ( $authors as $author ) {
$output .= "// Author: $author\n";
}
return $output;
}
}
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