Page MenuHomeSealhub
Files F7188795

ArcanistPyFlakesLinter.php
No OneTemporary
Actions

ArcanistPyFlakesLinter.php
View Options

<?php
/*
* Copyright 2012 Facebook, 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.
*/
/**
* Uses "PyFlakes" to detect various errors in Python code.
*
* @group linter
*/
final class ArcanistPyFlakesLinter extends ArcanistLinter {
public function willLintPaths(array $paths) {
return;
}
public function getLinterName() {
return 'PyFlakes';
}
public function getLintSeverityMap() {
return array();
}
public function getLintNameMap() {
return array(
);
}
public function getPyFlakesOptions() {
return null;
}
public function lintPath($path) {
$working_copy = $this->getEngine()->getWorkingCopy();
$pyflakes_path = $working_copy->getConfig('lint.pyflakes.path');
$pyflakes_prefix = $working_copy->getConfig('lint.pyflakes.prefix');
// Default to just finding pyflakes in the users path
$pyflakes_bin = 'pyflakes';
$python_path = '';
// If a pyflakes path was specified, then just use that as the
// pyflakes binary and assume that the libraries will be imported
// correctly.
//
// If no pyflakes path was specified and a pyflakes prefix was
// specified, then use the binary from this prefix and add it to
// the PYTHONPATH environment variable so that the libs are imported
// correctly. This is useful when pyflakes is installed into a
// non-default location.
if ($pyflakes_path !== null) {
$pyflakes_bin = $pyflakes_path;
} else if ($pyflakes_prefix !== null) {
$pyflakes_bin = $pyflakes_prefix.'/bin/pyflakes';
$python_path = $pyflakes_prefix.'/lib/python2.6/site-packages:';
}
$options = $this->getPyFlakesOptions();
$f = new ExecFuture(
"/usr/bin/env PYTHONPATH=%s\$PYTHONPATH ".
"{$pyflakes_bin} {$options}", $python_path);
$f->write($this->getData($path));
try {
list($stdout, $_) = $f->resolvex();
} catch (CommandException $e) {
// PyFlakes will return an exit code of 1 if warnings/errors
// are found but print nothing to stderr in this case. Therefore,
// if we see any output on stderr or a return code other than 1 or 0,
// pyflakes failed.
if ($e->getError() !== 1 || $e->getStderr() !== '') {
throw $e;
} else {
$stdout = $e->getStdout();
}
}
$lines = explode("\n", $stdout);
$messages = array();
foreach ($lines as $line) {
$matches = null;
if (!preg_match('/^(.*?):(\d+): (.*)$/', $line, $matches)) {
continue;
}
foreach ($matches as $key => $match) {
$matches[$key] = trim($match);
}
$message = new ArcanistLintMessage();
$message->setPath($path);
$message->setLine($matches[2]);
$message->setCode($this->getLinterName());
$message->setDescription($matches[3]);
$message->setSeverity(ArcanistLintSeverity::SEVERITY_WARNING);
$this->addLintMessage($message);
}
}
}

File Metadata

Mime Type
text/x-php
Expires
Tue, Jul 8, 08:32 (18 h, 23 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
803340
Default Alt Text
ArcanistPyFlakesLinter.php (3 KB)

Event Timeline