rocksdb/arcanist_util/cpp_linter/ArcanistCpplintLinter.php

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<?php
/**
* Uses google's cpplint.py to check code. RocksDB team forked this file from
* phabricator's /src/lint/linter/ArcanistCpplintLinter.php, and customized it
* for its own use.
*
* You can get it here:
* http://google-styleguide.googlecode.com/svn/trunk/cpplint/cpplint.py
* @group linter
*/
final class ArcanistCpplintLinter extends ArcanistLinter {
public function willLintPaths(array $paths) {
return;
}
public function getLinterName() {
return 'cpplint.py';
}
public function getLintPath() {
$bin = 'cpplint.py';
// Search under current dir
list($err) = exec_manual('which %s/%s', $this->linterDir(), $bin);
if (!$err) {
return $this->linterDir().'/'.$bin;
}
// Look for globally installed cpplint.py
list($err) = exec_manual('which %s', $bin);
if ($err) {
throw new ArcanistUsageException(
"cpplint.py does not appear to be installed on this system. Install ".
"it (e.g., with 'wget \"http://google-styleguide.googlecode.com/".
"svn/trunk/cpplint/cpplint.py\"') ".
"in your .arcconfig to point to the directory where it resides. ".
"Also don't forget to chmod a+x cpplint.py!");
}
return $bin;
}
public function lintPath($path) {
$bin = $this->getLintPath();
$path = $this->rocksdbDir().'/'.$path;
$f = new ExecFuture("%C $path", $bin);
list($err, $stdout, $stderr) = $f->resolve();
if ($err === 2) {
throw new Exception("cpplint failed to run correctly:\n".$stderr);
}
$lines = explode("\n", $stderr);
$messages = array();
foreach ($lines as $line) {
$line = trim($line);
$matches = null;
$regex = '/^[^:]+:(\d+):\s*(.*)\s*\[(.*)\] \[(\d+)\]$/';
if (!preg_match($regex, $line, $matches)) {
continue;
}
foreach ($matches as $key => $match) {
$matches[$key] = trim($match);
}
$message = new ArcanistLintMessage();
$message->setPath($path);
$message->setLine($matches[1]);
$message->setCode($matches[3]);
$message->setName($matches[3]);
$message->setDescription($matches[2]);
$message->setSeverity(ArcanistLintSeverity::SEVERITY_WARNING);
$this->addLintMessage($message);
}
}
// The path of this linter
private function linterDir() {
return dirname(__FILE__);
}
// TODO(kaili) a quick and dirty way to figure out rocksdb's root dir.
private function rocksdbDir() {
return $this->linterDir()."/../..";
}
}