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<?php
abstract class Suppressor {
/**
* @param string $input
* @return bool do errors remain
*/
abstract public function suppress( $input );
/**
* @param string[] $source
* @param string $type
* @param int $lineno
* @return bool
*/
protected function isSuppressed( array $source, $type, $lineno ) {
return $lineno > 0 && preg_match(
"|/\*\* @suppress {$type} |",
$source[$lineno - 1]
);
}
}
class TextSuppressor extends Suppressor {
/**
* @param string $input
* @return bool do errors remain
*/
public function suppress( $input ) {
$hasErrors = false;
$errors = [];
foreach ( explode( "\n", $input ) as $error ) {
if ( empty( $error ) ) {
continue;
}
if ( !preg_match( '/^(.*):(\d+) (Phan\w+) (.*)$/', $error, $matches ) ) {
echo "Failed to parse line: $error\n";
continue;
}
list( $source, $file, $lineno, $type, $message ) = $matches;
$errors[$file][] = [
'orig' => $error,
// convert from 1 indexed to 0 indexed
'lineno' => $lineno - 1,
'type' => $type,
];
}
foreach ( $errors as $file => $fileErrors ) {
$source = file( $file );
foreach ( $fileErrors as $error ) {
if ( !$this->isSuppressed( $source, $error['type'], $error['lineno'] ) ) {
echo $error['orig'], "\n";
$hasErrors = true;
}
}
}
return $hasErrors;
}
}
class CheckStyleSuppressor extends Suppressor {
/**
* @param string $input
* @return bool True do errors remain
*/
public function suppress( $input ) {
$dom = new DOMDocument();
$dom->loadXML( $input );
$hasErrors = false;
// DOMNodeList's are "live", convert to an array so it works as expected
$files = [];
foreach ( $dom->getElementsByTagName( 'file' ) as $file ) {
$files[] = $file;
}
foreach ( $files as $file ) {
$errors = [];
foreach ( $file->getElementsByTagName( 'error' ) as $error ) {
$errors[] = $error;
}
$source = file( $file->getAttribute( 'name' ) );
$fileHasErrors = false;
foreach ( $errors as $error ) {
$lineno = $error->getAttribute( 'line' ) - 1;
$type = $error->getAttribute( 'source' );
if ( $this->isSuppressed( $source, $type, $lineno ) ) {
$error->parentNode->removeChild( $error );
} else {
$fileHasErrors = true;
$hasErrors = true;
}
}
if ( !$fileHasErrors ) {
$file->parentNode->removeChild( $file );
}
}
echo $dom->saveXML();
return $hasErrors;
}
}
class NoopSuppressor extends Suppressor {
private $mode;
public function __construct( $mode ) {
$this->mode = $mode;
}
public function suppress( $input ) {
echo "Unsupported output mode: {$this->mode}\n$input";
return true;
}
}
$opt = getopt( "m:", [ "output-mode:" ] );
// if provided multiple times getopt returns an array
if ( isset( $opt['m'] ) ) {
$mode = $opt['m'];
} elseif ( isset( $mode['output-mode'] ) ) {
$mode = $opt['output-mode'];
} else {
$mode = 'text';
}
if ( is_array( $mode ) ) {
// If an option is passed multiple times getopt returns an
// array. Just take the last one.
$mode = end( $mode );
}
switch ( $mode ) {
case 'text':
$suppressor = new TextSuppressor();
break;
case 'checkstyle':
$suppressor = new CheckStyleSuppressor();
break;
default:
$suppressor = new NoopSuppressor( $mode );
}
$input = file_get_contents( 'php://stdin' );
$hasErrors = $suppressor->suppress( $input );
if ( $hasErrors ) {
exit( 1 );
}
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