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<?php
declare( strict_types = 1 );
namespace MediaWiki\Extension\Translate\FileFormatSupport;
use FileBasedMessageGroup;
use MediaWiki\Content\TextContent;
use MediaWiki\Extension\Translate\MessageGroupConfiguration\MetaYamlSchemaExtender;
use MediaWiki\Extension\Translate\MessageLoading\Message;
use MediaWiki\Extension\Translate\MessageLoading\MessageCollection;
use MediaWiki\Extension\Translate\Utilities\Utilities;
use RuntimeException;
/**
* JavaFormat class implements support for Java properties files.
* This class reads and writes only utf-8 files. Java projects
* need to run native2ascii on them before using them.
*
* This class adds a new item into FILES section of group configuration:
* \c keySeparator which defaults to '='.
* @ingroup FileFormatSupport
*/
class JavaFormat extends SimpleFormat implements MetaYamlSchemaExtender {
private string $keySeparator;
public function __construct( FileBasedMessageGroup $group ) {
parent::__construct( $group );
$this->keySeparator = $this->extra['keySeparator'] ?? '=';
}
public function supportsFuzzy(): string {
return 'write';
}
public function getFileExtensions(): array {
return [ '.properties' ];
}
/** @throws RuntimeException */
public function readFromVariable( string $data ): array {
$data = TextContent::normalizeLineEndings( $data );
$lines = array_map( 'ltrim', explode( "\n", $data ) );
$authors = $messages = [];
$lineContinuation = false;
$key = '';
$value = '';
foreach ( $lines as $line ) {
if ( $lineContinuation ) {
$lineContinuation = false;
$valuecont = $line;
$valuecont = str_replace( '\n', "\n", $valuecont );
$value .= $valuecont;
} else {
if ( $line === '' ) {
continue;
}
if ( $line[0] === '#' || $line[0] === '!' ) {
$match = [];
$ok = preg_match( '/#\s*Author:\s*(.*)/', $line, $match );
if ( $ok ) {
$authors[] = $match[1];
}
continue;
}
if ( !str_contains( $line, $this->keySeparator ) ) {
throw new RuntimeException( "Line without separator '{$this->keySeparator}': $line." );
}
[ $key, $value ] = $this->readRow( $line, $this->keySeparator );
if ( $key === '' ) {
throw new RuntimeException( "Empty key in line $line." );
}
}
// @todo This doesn't handle the pathological case of even number of trailing \
if ( str_ends_with( $value, "\\" ) ) {
$value = substr( $value, 0, -1 );
$lineContinuation = true;
} else {
$messages[$key] = ltrim( $value );
}
}
$messages = $this->group->getMangler()->mangleArray( $messages );
return [
'AUTHORS' => $authors,
'MESSAGES' => $messages,
];
}
protected function writeReal( MessageCollection $collection ): string {
$header = $this->doHeader( $collection );
$header .= $this->doAuthors( $collection );
$header .= "\n";
$output = '';
$mangler = $this->group->getMangler();
/** @var Message $message */
foreach ( $collection as $key => $message ) {
$value = $message->translation() ?? '';
if ( $value === '' ) {
continue;
}
$value = str_replace( TRANSLATE_FUZZY, '', $value );
// Just to give an overview of translation quality.
if ( $message->hasTag( 'fuzzy' ) ) {
$output .= "# Fuzzy\n";
}
$key = $mangler->unmangle( $key );
$output .= $this->writeRow( $key, $value );
}
if ( $output ) {
return $header . $output;
}
return '';
}
/** Writes well-formed properties file row with key and value. */
public function writeRow( string $key, string $value ): string {
/* Keys containing the separator need escaping. Also escape comment
* characters, though strictly they would only need escaping when
* they are the first character. Plus the escape character itself. */
$key = addcslashes( $key, "#!{$this->keySeparator}\\" );
// Make sure we do not slip newlines trough... it would be fatal.
$value = str_replace( "\n", '\\n', $value );
return "$key{$this->keySeparator}$value\n";
}
/**
* Parses non-empty properties file row to key and value.
* @return string[]
*/
public function readRow( string $line, string $sep ): array {
if ( !str_contains( $line, '\\' ) ) {
/* Nothing appears to be escaped in this line.
* Just read the key and the value. */
[ $key, $value ] = explode( $sep, $line, 2 );
} else {
/* There might be escaped separators in the key.
* Using slower method to find the separator. */
/* Make the key default to empty instead of value, because
* empty key causes error on callers, while empty value
* wouldn't. */
$key = '';
$value = $line;
/* Find the first unescaped separator. Example:
* First line is the string being read, second line is the
* value of $escaped after having read the above character.
*
* ki\ts\\s\=a = koira
* 0010010010000
* ^ Not separator because $escaped was true
* ^ Split the string into key and value here
*/
$len = strlen( $line );
$escaped = false;
for ( $i = 0; $i < $len; $i++ ) {
$char = $line[$i];
if ( $char === '\\' ) {
$escaped = !$escaped;
} elseif ( $escaped ) {
$escaped = false;
} elseif ( $char === $sep ) {
$key = substr( $line, 0, $i );
// Excluding the separator character from the value
$value = substr( $line, $i + 1 );
break;
}
}
}
/* We usually don't want to expand things like \t in values since
* translators cannot easily input those. But in keys we do.
* \n is exception we do handle in values. */
$key = trim( $key );
$key = stripcslashes( $key );
$value = ltrim( $value );
$value = str_replace( '\n', "\n", $value );
return [ $key, $value ];
}
private function doHeader( MessageCollection $collection ): string {
if ( isset( $this->extra['header'] ) ) {
$output = $this->extra['header'];
} else {
global $wgSitename;
$code = $collection->code;
$name = Utilities::getLanguageName( $code );
$native = Utilities::getLanguageName( $code, $code );
$output = "# Messages for $name ($native)\n";
$output .= "# Exported from $wgSitename\n";
}
return $output;
}
private function doAuthors( MessageCollection $collection ): string {
$output = '';
$authors = $collection->getAuthors();
$authors = $this->filterAuthors( $authors, $collection->code );
foreach ( $authors as $author ) {
$output .= "# Author: $author\n";
}
return $output;
}
public static function getExtraSchema(): array {
return [
'root' => [
'_type' => 'array',
'_children' => [
'FILES' => [
'_type' => 'array',
'_children' => [
'header' => [
'_type' => 'text',
],
'keySeparator' => [
'_type' => 'text',
],
]
]
]
]
];
}
}
class_alias( JavaFormat::class, 'JavaFFS' );