46812f68c3
Summary: Previous our new `arc lint` has two annoying bugs: * Keeping sending false alarm that we'd put c++ system files first -- even though we've already done that. - this problem is caused by our linter, which doesn't give the underlying cpplint.py right file path (it gives "-" as file name), making cpplint.py work incorrectly. * Only works in rocksdb's root dir; Otherwise it'll throw exception saying "cannot find cpplint.py". I copied open source ArcanistCpplintLinter and modifiy it for our use. Test Plan: Ran arc lint and made sure the above-mentioned problem won't occur. Reviewers: haobo, sdong, igor, ljin, yhchiang, dhruba CC: leveldb Differential Revision: https://reviews.facebook.net/D16137
114 lines
3.4 KiB
PHP
114 lines
3.4 KiB
PHP
<?php
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/**
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* Uses google's cpplint.py to check code. RocksDB team forked this file from
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* phabricator's /src/lint/linter/ArcanistCpplintLinter.php, and customized it
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* for its own use.
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*
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* You can get it here:
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* http://google-styleguide.googlecode.com/svn/trunk/cpplint/cpplint.py
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* @group linter
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*/
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final class ArcanistCpplintLinter extends ArcanistLinter {
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public function willLintPaths(array $paths) {
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return;
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}
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public function getLinterName() {
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return 'cpplint.py';
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}
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public function getLintOptions() {
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$config = $this->getEngine()->getConfigurationManager();
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$options = $config->getConfigFromAnySource('lint.cpplint.options', '');
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return $options;
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}
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public function getLintPath() {
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$config = $this->getEngine()->getConfigurationManager();
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$prefix = $config->getConfigFromAnySource('lint.cpplint.prefix');
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$bin = $config->getConfigFromAnySource('lint.cpplint.bin', 'cpplint.py');
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if ($prefix !== null) {
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if (!Filesystem::pathExists($prefix.'/'.$bin)) {
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throw new ArcanistUsageException(
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"Unable to find cpplint.py binary in a specified directory. Make ".
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"sure that 'lint.cpplint.prefix' and 'lint.cpplint.bin' keys are ".
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"set correctly. If you'd rather use a copy of cpplint installed ".
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"globally, you can just remove these keys from your .arcconfig.");
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}
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$bin = csprintf("%s/%s", $prefix, $bin);
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return $bin;
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}
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// Search under current dir
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list($err) = exec_manual('which %s/%s', $this->linterDir(), $bin);
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if (!$err) {
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return $this->linterDir().'/'.$bin;
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}
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// Look for globally installed cpplint.py
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list($err) = exec_manual('which %s', $bin);
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if ($err) {
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throw new ArcanistUsageException(
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"cpplint.py does not appear to be installed on this system. Install ".
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"it (e.g., with 'wget \"http://google-styleguide.googlecode.com/".
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"svn/trunk/cpplint/cpplint.py\"') or configure 'lint.cpplint.prefix' ".
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"in your .arcconfig to point to the directory where it resides. ".
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"Also don't forget to chmod a+x cpplint.py!");
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}
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return $bin;
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}
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public function lintPath($path) {
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$bin = $this->getLintPath();
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$options = $this->getLintOptions();
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$path = $this->rocksdbDir().'/'.$path;
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$f = new ExecFuture("%C %C $path", $bin, $options);
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list($err, $stdout, $stderr) = $f->resolve();
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if ($err === 2) {
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throw new Exception("cpplint failed to run correctly:\n".$stderr);
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}
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$lines = explode("\n", $stderr);
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$messages = array();
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foreach ($lines as $line) {
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$line = trim($line);
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$matches = null;
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$regex = '/^[^:]+:(\d+):\s*(.*)\s*\[(.*)\] \[(\d+)\]$/';
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if (!preg_match($regex, $line, $matches)) {
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continue;
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}
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foreach ($matches as $key => $match) {
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$matches[$key] = trim($match);
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}
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$message = new ArcanistLintMessage();
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$message->setPath($path);
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$message->setLine($matches[1]);
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$message->setCode($matches[3]);
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$message->setName($matches[3]);
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$message->setDescription($matches[2]);
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$message->setSeverity(ArcanistLintSeverity::SEVERITY_WARNING);
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$this->addLintMessage($message);
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}
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}
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// The path of this linter
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private function linterDir() {
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return dirname(__FILE__);
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}
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// TODO(kaili) a quick and dirty way to figure out rocksdb's root dir.
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private function rocksdbDir() {
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return $this->linterDir()."/../..";
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}
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}
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