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<?php
/**
* Contains wrapper class for interface to parse and generate YAML files.
*
* @file
* @author Ævar Arnfjörð Bjarmason
* @author Niklas Laxström
* @copyright Copyright © 2009-2013, Niklas Laxström, Ævar Arnfjörð Bjarmason
* @license GPL-2.0+
*/
/**
* This class is a wrapper class to provide interface to parse
* and generate YAML files with syck or spyc backend.
*/
class TranslateYaml {
/**
* @deprecated in 2014.01
*/
public static function parseGroupFile( $filename ) {
$data = file_get_contents( $filename );
wfDeprecated( 'Use MessageGroupConfigurationParser' );
$parser = new MessageGroupConfigurationParser();
return $parser->getHopefullyValidConfigurations( $data );
}
/**
* @deprecated in 2014.01
*/
public static function mergeTemplate( $base, $specific ) {
wfDeprecated( 'Use MessageGroupConfigurationParser' );
return MessageGroupConfigurationParser::mergeTemplate( $base, $specific );
}
/**
* @param $text string
* @return array
* @throws MWException
*/
public static function loadString( $text ) {
global $wgTranslateYamlLibrary;
switch ( $wgTranslateYamlLibrary ) {
case 'phpyaml':
$ret = yaml_parse( $text );
if ( $ret === false ) {
// Convert failures to exceptions
throw new InvalidArgumentException( 'Invalid Yaml string' );
}
return $ret;
case 'spyc':
// Load the bundled version if not otherwise available
if ( !class_exists( 'Spyc' ) ) {
require_once __DIR__ . '/../libs/spyc/spyc.php';
}
$yaml = spyc_load( $text );
return self::fixSpycSpaces( $yaml );
case 'syck':
$yaml = self::syckLoad( $text );
return self::fixSyckBooleans( $yaml );
default:
throw new MWException( 'Unknown Yaml library' );
}
}
/**
* @param $yaml array
* @return array
*/
public static function fixSyckBooleans( &$yaml ) {
foreach ( $yaml as &$value ) {
if ( is_array( $value ) ) {
self::fixSyckBooleans( $value );
} elseif ( $value === 'yes' ) {
$value = true;
}
}
return $yaml;
}
/**
* @param $yaml array
* @return array
*/
public static function fixSpycSpaces( &$yaml ) {
foreach ( $yaml as $key => &$value ) {
if ( is_array( $value ) ) {
self::fixSpycSpaces( $value );
} elseif ( is_string( $value ) && $key === 'header' ) {
$value = preg_replace( '~^\*~m', ' *', $value ) . "\n";
}
}
return $yaml;
}
public static function load( $file ) {
$text = file_get_contents( $file );
return self::loadString( $text );
}
public static function dump( $text ) {
global $wgTranslateYamlLibrary;
switch ( $wgTranslateYamlLibrary ) {
case 'phpyaml':
return yaml_emit( $text, YAML_UTF8_ENCODING );
case 'spyc':
require_once __DIR__ . '/../libs/spyc/spyc.php';
return Spyc::YAMLDump( $text );
case 'syck':
return self::syckDump( $text );
default:
throw new MWException( 'Unknown Yaml library' );
}
}
protected static function syckLoad( $data ) {
# Make temporary file
$td = wfTempDir();
$tf = tempnam( $td, 'yaml-load-' );
# Write to file
file_put_contents( $tf, $data );
$cmd = "perl -MYAML::Syck=LoadFile -MPHP::Serialization=serialize -wle '" .
'my $tf = q[' . $tf . '];' .
'my $yaml = LoadFile($tf);' .
'open my $fh, ">", "$tf.serialized" or die qq[Can not open "$tf.serialized"];' .
'print $fh serialize($yaml);' .
'close($fh);' .
"' 2>&1";
$out = wfShellExec( $cmd, $ret );
if ( (int)$ret !== 0 ) {
throw new MWException( "The command '$cmd' died in execution with exit code '$ret': $out" );
}
$serialized = file_get_contents( "$tf.serialized" );
$php_data = unserialize( $serialized );
unlink( $tf );
unlink( "$tf.serialized" );
return $php_data;
}
protected static function syckDump( $data ) {
# Make temporary file
$td = wfTempDir();
$tf = tempnam( $td, 'yaml-load-' );
# Write to file
$sdata = serialize( $data );
file_put_contents( $tf, $sdata );
$cmd = "perl -MYAML::Syck=DumpFile -MPHP::Serialization=unserialize -MFile::Slurp=slurp -we '" .
'$YAML::Syck::Headless = 1;' .
'$YAML::Syck::SortKeys = 1;' .
'my $tf = q[' . $tf . '];' .
'my $serialized = slurp($tf);' .
'my $unserialized = unserialize($serialized);' .
'my $unserialized_utf8 = deutf8($unserialized);' .
'DumpFile(qq[$tf.yaml], $unserialized_utf8);' .
'sub deutf8 {' .
'if(ref($_[0]) eq "HASH") {' .
'return { map { deutf8($_) } %{$_[0]} };' .
'} elsif(ref($_[0]) eq "ARRAY") {' .
'return [ map { deutf8($_) } @{$_[0]} ];' .
'} else {' .
'my $s = $_[0];' .
'utf8::decode($s);' .
'return $s;' .
'}' .
'}' .
"' 2>&1";
$out = wfShellExec( $cmd, $ret );
if ( (int)$ret !== 0 ) {
throw new MWException( "The command '$cmd' died in execution with exit code '$ret': $out" );
}
$yaml = file_get_contents( "$tf.yaml" );
unlink( $tf );
unlink( "$tf.yaml" );
return $yaml;
}
}
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