[PATCH] verify_blkparse: make sure file is readable

[blktrace.git] / verify_blkparse

#!/usr/bin/php -q

<?php

// Parse time correctness of blkparse output
// Thomas Kenne <thomas@2ndfloor.dk>

if (!isset($argv[1])) {
	die("need file as argument\n");
}

$file = $argv[1];

if (!is_file($file)) {
	die("invalid file\n");
}

if (!is_readable($file)) {
	die("file not readable\n");
}

$lastnum = false;
$fp = fopen($file, 'r');
while ($line = fgets($fp, 200)) {
	if (trim($line) == '') {
		break;
	}
	$data = preg_split("/[\s]+/", $line); 
	$num = $data[4];
	settype($num, 'float');

	if ($lastnum && $num < $lastnum) {
		echo $line;
		flush();
	} else { 	
		$lastnum = $num;
	}
}

fclose($fp);

?>