rocksdb/arcanist_util/cpp_linter/FbcodeCppLinter.php

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<?php
class FbcodeCppLinter extends ArcanistLinter {
const CPPLINT = "/home/engshare/tools/cpplint";
const LINT_ERROR = 1;
const LINT_WARNING = 2;
const C_FLAG = "--c_mode=true";
private $rawLintOutput = array();
public function willLintPaths(array $paths) {
$futures = array();
$ret_value = 0;
$last_line = system("which cpplint", $ret_value);
$CPP_LINT = false;
if ($ret_value == 0) {
$CPP_LINT = $last_line;
} else if (file_exists(self::CPPLINT)) {
$CPP_LINT = self::CPPLINT;
}
if ($CPP_LINT) {
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",
$CPP_LINT, self::C_FLAG,
$this->getEngine()->getFilePathOnDisk($p));
} else {
$futures[$p] = new ExecFuture("%s %s 2>&1",
$CPP_LINT, $this->getEngine()->getFilePathOnDisk($p));
}
}
foreach (Futures($futures)->limit(8) as $p => $f) {
$this->rawLintOutput[$p] = $f->resolvex();
}
}
return;
}
public function getLinterName() {
return "FBCPP";
}
public function lintPath($path) {
$msgs = $this->getCppLintOutput($path);
foreach ($msgs as $m) {
$this->raiseLintAtLine($m['line'], 0, $m['severity'], $m['msg']);
}
}
public function getLintSeverityMap() {
return array(
self::LINT_WARNING => ArcanistLintSeverity::SEVERITY_WARNING,
self::LINT_ERROR => ArcanistLintSeverity::SEVERITY_ERROR
);
}
public function getLintNameMap() {
return array(
self::LINT_WARNING => "CppLint Warning",
self::LINT_ERROR => "CppLint Error"
);
}
private function getCppLintOutput($path) {
if (!array_key_exists($path, $this->rawLintOutput)) {
return array();
}
list($output) = $this->rawLintOutput[$path];
$msgs = array();
$current = null;
foreach (explode("\n", $output) as $line) {
if (preg_match('/[^:]*\((\d+)\):(.*)$/', $line, $matches)) {
if ($current) {
$msgs[] = $current;
}
$line = $matches[1];
$text = $matches[2];
$sev = preg_match('/.*Warning.*/', $text)
? self::LINT_WARNING
: self::LINT_ERROR;
$current = array('line' => $line,
'msg' => $text,
'severity' => $sev);
} else if ($current) {
$current['msg'] .= ' ' . $line;
}
}
if ($current) {
$msgs[] = $current;
}
return $msgs;
}
}