rocksdb/arcanist_util/cpp_linter/FbcodeCppLinter.php

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<?php
// Copyright 2004-present Facebook. All rights reserved.
class FbcodeCppLinter extends ArcanistLinter {
const FLINT = "/home/engshare/tools/flint";
const LINT_ERROR = 1;
const LINT_WARNING = 2;
const LINT_ADVICE = 3;
const C_FLAG = "--c_mode=true";
private $rawLintOutput = array();
public function willLintPaths(array $paths) {
if (!file_exists(self::FLINT)) {
return;
}
$futures = array();
foreach ($paths as $p) {
$lpath = $this->getEngine()->getFilePathOnDisk($p);
$lpath_file = file($lpath);
if (preg_match('/\.(c)$/', $lpath) ||
preg_match('/-\*-.*Mode: C[; ].*-\*-/', $lpath_file[0]) ||
preg_match('/vim(:.*)*:\s*(set\s+)?filetype=c\s*:/', $lpath_file[0])
) {
$futures[$p] = new ExecFuture("%s %s %s 2>&1",
self::FLINT, self::C_FLAG,
$this->getEngine()->getFilePathOnDisk($p));
} else {
$futures[$p] = new ExecFuture("%s %s 2>&1",
self::FLINT, $this->getEngine()->getFilePathOnDisk($p));
}
}
foreach (Futures($futures)->limit(8) as $p => $f) {
$this->rawLintOutput[$p] = $f->resolvex();
}
return;
}
public function getLinterName() {
return "FBCPP";
}
public function lintPath($path) {
$this->runCppLint($path);
}
private function runCppLint($path) {
$msgs = $this->getCppLintOutput($path);
foreach ($msgs as $m) {
$this->raiseLintAtLine($m['line'], 0, $m['severity'], $m['msg']);
}
}
private function adviseOnEachPattern(
$path,
$regex,
$message,
$lint_type = self::LINT_ADVICE,
$match_idx = 0) {
$file_data = $this->getData($path);
$matches = array();
if (!preg_match_all($regex, $file_data, $matches, PREG_OFFSET_CAPTURE)) {
return;
}
foreach ($matches[$match_idx] as $match) {
list($match_str, $offset) = $match;
$this->raiseLintAtOffset($offset, $lint_type, $message, $match_str);
}
}
public function getLintSeverityMap() {
return array(
self::LINT_WARNING => ArcanistLintSeverity::SEVERITY_WARNING,
self::LINT_ADVICE => ArcanistLintSeverity::SEVERITY_ADVICE,
self::LINT_ERROR => ArcanistLintSeverity::SEVERITY_ERROR
);
}
public function getLintNameMap() {
return array(
self::LINT_ADVICE => "CppLint Advice",
self::LINT_WARNING => "CppLint Warning",
self::LINT_ERROR => "CppLint Error"
);
}
private function getCppLintOutput($path) {
list($output) = $this->rawLintOutput[$path];
$msgs = array();
$current = null;
$matches = array();
foreach (explode("\n", $output) as $line) {
if (preg_match('/.*?:(\d+):(.*)/', $line, $matches)) {
if ($current) {
$msgs[] = $current;
}
$line = $matches[1];
$text = $matches[2];
if (preg_match('/.*Warning.*/', $text)) {
$sev = self::LINT_WARNING;
} else if (preg_match('/.*Advice.*/', $text)) {
$sev = self::LINT_ADVICE;
} else {
$sev = self::LINT_ERROR;
}
$current = array('line' => $line,
'msg' => $text,
'severity' => $sev);
} else if ($current) {
$current['msg'] .= ' ' . $line;
}
}
if ($current) {
$msgs[] = $current;
}
return $msgs;
}
}