lmcswitch

#!/usr/bin/env php
<?php

function writeln($msg, $error = FALSE) {
	$msg = $msg . "\n";
	if ($error) {
		die($msg);
	} else {
		echo $msg;
	}
}

$environments = array('devel', 'dev2', 'dev3', 'deploy','preprod','prod','off');

if (isset($argv[1])) {
	$switch = strtolower($argv[1]);
	if (!in_array($switch, $environments)) {
		writeln('Invalid environment "' . $switch . '"', TRUE);
	}
	file_put_contents(getenv("HOME") . "/.lmcenv", "$switch");
} else {
	writeln('Missing environment name (' . implode(', ', $environments) . ')', TRUE);
}

$hostsFile = '/etc/hosts';

// backup file
if (!copy($hostsFile, '/tmp/' . basename($hostsFile) . '.bak')) {
	writeln('Failed to create backup of ' . $hostsFile, TRUE);
}

$content = file($hostsFile);
$lmc = FALSE;
$env = FALSE;

foreach($content as &$line) {
	$line = trim($line);

	// lmc start
	if ($line === '#### LMC ####') {
		$lmc = TRUE;
	} elseif ($line === '#### /LMC ####') {
		$lmc = FALSE;
	} elseif ($lmc) {
		if (strlen($line) == 0) {
			$env = FALSE;
		} elseif (preg_match('/^## (' .implode('|', $environments) . ')$/i', $line, $m)) {
			$env = strtolower($m[1]);
		} elseif ($env) {
			$line = ($env == $switch ? '' : '#') . ltrim($line, '#');
		}
		if (preg_match('/(\.?jobs\.cz|\.?prace\.cz|\.?hotjobs\.cz|.?lmc\.cz)/i', $line, $m)) {
			$line = ($switch!='off' ? '' : '#') . ltrim($line, '#');
		}
	}
}

if (@file_put_contents($hostsFile, implode("\n", $content) . "\n")) {
	system('dscacheutil -flushcache');
	writeln('Switched to ' . strtoupper($switch));
} else {
	writeln($hostsFile . ' save failed', TRUE);
}