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<?php
/**
* Support for JSON message file format.
*
* @file
* @author Niklas Laxström
* @license GPL-2.0-or-later
*/
/**
* JsonFFS implements a message format where messages are encoded
* as key-value pairs in JSON objects. The format is extended to
* support author information under the special @metadata key.
*
* @ingroup FFS
* @since 2012-09-21
*/
class JsonFFS extends SimpleFFS {
/**
* @param string $data
* @return bool
*/
public static function isValid( $data ) {
return is_array( FormatJson::decode( $data, /*as array*/true ) );
}
/**
* @param FileBasedMessageGroup $group
*/
public function __construct( FileBasedMessageGroup $group ) {
parent::__construct( $group );
$this->flattener = $this->getFlattener();
}
public function getFileExtensions() {
return [ '.json' ];
}
/**
* @param string $data
* @return array Parsed data.
*/
public function readFromVariable( $data ) {
$messages = (array)FormatJson::decode( $data, /*as array*/true );
$authors = [];
$metadata = [];
if ( isset( $messages['@metadata']['authors'] ) ) {
$authors = (array)$messages['@metadata']['authors'];
unset( $messages['@metadata']['authors'] );
}
if ( isset( $messages['@metadata'] ) ) {
$metadata = $messages['@metadata'];
}
unset( $messages['@metadata'] );
if ( $this->flattener ) {
$messages = $this->flattener->flatten( $messages );
}
$messages = $this->group->getMangler()->mangle( $messages );
return [
'MESSAGES' => $messages,
'AUTHORS' => $authors,
'METADATA' => $metadata,
];
}
/**
* @param MessageCollection $collection
* @return string
*/
protected function writeReal( MessageCollection $collection ) {
$messages = [];
$template = $this->read( $collection->getLanguage() );
$messages['@metadata'] = [];
if ( isset( $template['METADATA'] ) ) {
$messages['@metadata'] = $template['METADATA'];
}
$authors = $collection->getAuthors();
$authors = $this->filterAuthors( $authors, $collection->code );
if ( isset( $template['AUTHORS'] ) ) {
$authors = array_unique( array_merge( $template['AUTHORS'], $authors ) );
}
if ( $authors !== [] ) {
$messages['@metadata']['authors'] = array_values( $authors );
}
$mangler = $this->group->getMangler();
/**
* @var $m ThinMessage
*/
foreach ( $collection as $key => $m ) {
$value = $m->translation();
if ( $value === null ) {
continue;
}
if ( $m->hasTag( 'fuzzy' ) ) {
$value = str_replace( TRANSLATE_FUZZY, '', $value );
}
$key = $mangler->unmangle( $key );
$messages[$key] = $value;
}
// Do not create empty files. Check that something besides @metadata is present.
if ( count( $messages ) < 2 ) {
return '';
}
if ( $this->flattener ) {
$messages = $this->flattener->unflatten( $messages );
}
if ( isset( $this->extra['includeMetadata'] ) && !$this->extra['includeMetadata'] ) {
unset( $messages['@metadata'] );
}
return FormatJson::encode( $messages, "\t", FormatJson::ALL_OK ) . "\n";
}
protected function getFlattener() {
if ( !isset( $this->extra['nestingSeparator'] ) ) {
return null;
}
$parseCLDRPlurals = $this->extra['parseCLDRPlurals'] ?? false;
$flattener = new ArrayFlattener( $this->extra['nestingSeparator'], $parseCLDRPlurals );
return $flattener;
}
public function isContentEqual( $a, $b ) {
if ( $this->flattener ) {
return $this->flattener->compareContent( $a, $b );
} else {
return parent::isContentEqual( $a, $b );
}
}
public static function getExtraSchema() {
$schema = [
'root' => [
'_type' => 'array',
'_children' => [
'FILES' => [
'_type' => 'array',
'_children' => [
'nestingSeparator' => [
'_type' => 'text',
],
'parseCLDRPlurals' => [
'_type' => 'boolean',
],
'includeMetadata' => [
'_type' => 'boolean',
]
]
]
]
]
];
return $schema;
}
}
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