ArcanistCppcheckLinter.php
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	<?php

	/**
	* Uses Cppcheck to do basic checks in a C++ file.
	*/
	final class ArcanistCppcheckLinter extends ArcanistExternalLinter {

	public function getInfoName() {
	return 'C++ linter';
	}

	public function getInfoURI() {
	return 'http://cppcheck.sourceforge.net';
	}

	public function getInfoDescription() {
	return pht(
	'Use `%s` to perform static analysis on C/C++ code.',
	'cppcheck');
	}

	public function getLinterName() {
	return 'cppcheck';
	}

	public function getLinterConfigurationName() {
	return 'cppcheck';
	}

	public function getDefaultBinary() {
	return 'cppcheck';
	}

	public function getVersion() {
	list($stdout) = execx('%C --version', $this->getExecutableCommand());

	$matches = array();
	$regex = '/^Cppcheck (?P<version>\d+\.\d+)$/';
	if (preg_match($regex, $stdout, $matches)) {
	return $matches['version'];
	} else {
	return false;
	}
	}

	public function getInstallInstructions() {
	return pht(
	'Install Cppcheck using `%s` or similar.',
	'apt-get install cppcheck');
	}

	protected function getDefaultFlags() {
	return array(
	'-j2',
	'--enable=performance,style,portability,information',
	);
	}

	protected function getMandatoryFlags() {
	return array(
	'--quiet',
	'--inline-suppr',
	'--xml',
	'--xml-version=2',
	);
	}

	public function shouldExpectCommandErrors() {
	return false;
	}

	protected function parseLinterOutput($path, $err, $stdout, $stderr) {
	$dom = new DOMDocument();
	$ok = @$dom->loadXML($stderr);

	if (!$ok) {
	return false;
	}

	$errors = $dom->getElementsByTagName('error');
	$messages = array();
	foreach ($errors as $error) {
	foreach ($error->getElementsByTagName('location') as $location) {
	$message = new ArcanistLintMessage();
	$message->setPath($location->getAttribute('file'));
	$message->setLine($location->getAttribute('line'));
	$message->setCode('Cppcheck');
	$message->setName($error->getAttribute('id'));
	$message->setDescription($error->getAttribute('msg'));

	switch ($error->getAttribute('severity')) {
	case 'error':
	$message->setSeverity(ArcanistLintSeverity::SEVERITY_ERROR);
	break;

	default:
	if ($error->getAttribute('inconclusive')) {
	$message->setSeverity(ArcanistLintSeverity::SEVERITY_ADVICE);
	} else {
	$message->setSeverity(ArcanistLintSeverity::SEVERITY_WARNING);
	}
	break;
	}

	$messages[] = $message;
	}
	}

	return $messages;
	}

	}

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