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<?php
namespace MediaWiki\Tidy;
class RaggettExternal extends RaggettBase {
/**
* Spawn an external HTML tidy process and get corrected markup back from it.
* Also called in OutputHandler.php for full page validation
*
* @param string $text HTML to check
* @param bool $stderr Whether to read result from STDERR rather than STDOUT
* @param int &$retval Exit code (-1 on internal error)
* @return string|null
*/
protected function cleanWrapped( $text, $stderr = false, &$retval = null ) {
$cleansource = '';
$opts = ' -utf8';
if ( $stderr ) {
$descriptorspec = [
0 => [ 'pipe', 'r' ],
1 => [ 'file', wfGetNull(), 'a' ],
2 => [ 'pipe', 'w' ]
];
} else {
$descriptorspec = [
0 => [ 'pipe', 'r' ],
1 => [ 'pipe', 'w' ],
2 => [ 'file', wfGetNull(), 'a' ]
];
}
$readpipe = $stderr ? 2 : 1;
$pipes = [];
$process = proc_open(
"{$this->config['tidyBin']} -config {$this->config['tidyConfigFile']} " .
$this->config['tidyCommandLine'] . $opts, $descriptorspec, $pipes );
// NOTE: At least on linux, the process will be created even if tidy is not installed.
// This means that missing tidy will be treated as a validation failure.
if ( is_resource( $process ) ) {
// Theoretically, this style of communication could cause a deadlock
// here. If the stdout buffer fills up, then writes to stdin could
// block. This doesn't appear to happen with tidy, because tidy only
// writes to stdout after it's finished reading from stdin. Search
// for tidyParseStdin and tidySaveStdout in console/tidy.c
fwrite( $pipes[0], $text );
fclose( $pipes[0] );
while ( !feof( $pipes[$readpipe] ) ) {
$cleansource .= fgets( $pipes[$readpipe], 1024 );
}
fclose( $pipes[$readpipe] );
$retval = proc_close( $process );
} else {
wfWarn( "Unable to start external tidy process" );
$retval = -1;
}
if ( !$stderr && $cleansource == '' && $text != '' ) {
// Some kind of error happened, so we couldn't get the corrected text.
// Just give up; we'll use the source text and append a warning.
$cleansource = null;
}
return $cleansource;
}
public function supportsValidate() {
return true;
}
}
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