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CheckstyleLinter.php
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CheckstyleLinter.php
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<?php
/**
* Copyright 2017 Pinterest, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Lints Java source files using the "checkstyle" tool.
*/
final class CheckstyleLinter extends ArcanistExternalLinter {
private $config = null;
public function getInfoName() {
return 'Checkstyle Linter';
}
public function getInfoDescription() {
return pht('Checks Java files');
}
public function getInfoURI() {
return 'http://checkstyle.sourceforge.net/';
}
public function getLinterName() {
return 'CHECKSTYLE';
}
public function getLinterConfigurationName() {
return 'checkstyle';
}
public function getLinterConfigurationOptions() {
$options = array(
'checkstyle.config' => array(
'type' => 'string',
'help' => pht("Configuration file to use."),
),
);
return $options + parent::getLinterConfigurationOptions();
}
public function setLinterConfigurationValue($key, $value) {
switch ($key) {
case 'checkstyle.config':
$this->config = $value;
return;
}
return parent::setLinterConfigurationValue($key, $value);
}
public function getDefaultBinary() {
return 'checkstyle';
}
public function getVersion() {
list($err, $stdout, $stderr) = exec_manual(
'%C -v',
$this->getExecutableCommand());
$matches = array();
if (preg_match('/^Checkstyle version: (.*)$/', $stdout, $matches)) {
return $matches[1];
} else {
return false;
}
}
public function getInstallInstructions() {
return pht(
'Install checkstyle using `%s` (macOS) or `%s` (Linux).',
'brew install checkstyle',
'apt-get install checkstyle');
}
protected function getMandatoryFlags() {
return array('-c', $this->config);
}
protected function parseLinterOutput($path, $err, $stdout, $stderr) {
$lines = phutil_split_lines($stdout, false);
// [ERROR] /path/to/file.java:31: Message text [Indentation]
// [WARN] /path/to/file.java:31:10: Message text [Indentation]
$regex = '/^\[(?P<severity>[A-Z]+)\] '.
'(?P<path>.*?):(?P<line>\d+):(?:(?P<char>\d+):)? '.
'(?P<message>.*) \[(?P<type>.*)\]$/';
$messages = array();
foreach ($lines as $line) {
$matches = null;
if (preg_match($regex, $line, $matches)) {
$message = new ArcanistLintMessage();
$message->setPath($path);
$message->setLine($matches['line']);
if (!empty($matches['char'])) {
$message->setChar($matches['char']);
}
$message->setCode($matches['type']);
$message->setName($this->getLinterName());
$message->setDescription($matches['message']);
$message->setSeverity($this->getMatchSeverity($matches['severity']));
$messages[] = $message;
}
}
return $messages;
}
private function getMatchSeverity($name) {
$map = array(
'ERROR' => ArcanistLintSeverity::SEVERITY_ERROR,
'WARN' => ArcanistLintSeverity::SEVERITY_WARNING,
);
if (array_key_exists($name, $map)) {
return $map[$name];
}
return ArcanistLintSeverity::SEVERITY_ERROR;
}
}

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