It is simple and looks great imho...
I also attach the composer install script refactored to Phrozn purposes.
#!/usr/bin/env php
<?php
/*
* This file is part of Phrozn.
*
* (c) Walter Dal Mut <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
process($argv);
/**
* processes the installer
*/
function process($argv)
{
$check = in_array('--check', $argv);
$help = in_array('--help', $argv);
$force = in_array('--force', $argv);
$quiet = in_array('--quiet', $argv);
$installDir = false;
foreach ($argv as $key => $val) {
if (0 === strpos($val, '--install-dir')) {
if (13 === strlen($val) && isset($argv[$key+1])) {
$installDir = trim($argv[$key+1]);
} else {
$installDir = trim(substr($val, 14));
}
}
}
if ($help) {
displayHelp();
exit(0);
}
$ok = checkPlatform($quiet);
if (false !== $installDir && !is_dir($installDir)) {
out("The defined install dir ({$installDir}) does not exist.", 'info');
$ok = false;
}
if ($check) {
exit($ok ? 0 : 1);
}
if ($ok || $force) {
installPhrozn($installDir, $quiet);
exit(0);
}
exit(1);
}
/**
* displays the help
*/
function displayHelp()
{
echo <<<EOF
Phrozn Installer
------------------
Options
--help this help
--check for checking environment only
--force forces the installation
--install-dir="..." accepts a target installation directory
EOF;
}
/**
* check the platform for possible issues on running phrozn
*/
function checkPlatform($quiet)
{
$errors = array();
$warnings = array();
$iniPath = php_ini_loaded_file();
$displayIniMessage = false;
if ($iniPath) {
$iniMessage = PHP_EOL.PHP_EOL.'The php.ini used by your command-line PHP is: ' . $iniPath;
} else {
$iniMessage = PHP_EOL.PHP_EOL.'A php.ini file does not exist. You will have to create one.';
}
if (ini_get('detect_unicode')) {
$errors['unicode'] = 'On';
}
if (extension_loaded('suhosin')) {
$suhosin = ini_get('suhosin.executor.include.whitelist');
$suhosinBlacklist = ini_get('suhosin.executor.include.blacklist');
if (false === stripos($suhosin, 'phar') && (!$suhosinBlacklist || false !== stripos($suhosinBlacklist, 'phar'))) {
$errors['suhosin'] = $suhosin;
}
}
if (!extension_loaded('Phar')) {
$errors['phar'] = true;
}
if (!ini_get('allow_url_fopen')) {
$errors['allow_url_fopen'] = true;
}
if (extension_loaded('ionCube Loader') && ioncube_loader_iversion() < 40009) {
$errors['ioncube'] = ioncube_loader_version();
}
if (version_compare(PHP_VERSION, '5.3.2', '<')) {
$errors['php'] = PHP_VERSION;
}
if (version_compare(PHP_VERSION, '5.3.4', '<')) {
$warnings['php'] = PHP_VERSION;
}
if (!extension_loaded('openssl')) {
$warnings['openssl'] = true;
}
if (ini_get('apc.enable_cli')) {
$warnings['apc_cli'] = true;
}
ob_start();
phpinfo(INFO_GENERAL);
$phpinfo = ob_get_clean();
if (preg_match('{Configure Command(?: *</td><td class="v">| *=> *)(.*?)(?:</td>|$)}m', $phpinfo, $match)) {
$configure = $match[1];
if (false !== strpos($configure, '--enable-sigchild')) {
$warnings['sigchild'] = true;
}
if (false !== strpos($configure, '--with-curlwrappers')) {
$warnings['curlwrappers'] = true;
}
}
if (!empty($errors)) {
out("Some settings on your machine make Phrozn unable to work properly.", 'error');
out('Make sure that you fix the issues listed below and run this script again:', 'error');
foreach ($errors as $error => $current) {
switch ($error) {
case 'phar':
$text = PHP_EOL."The phar extension is missing.".PHP_EOL;
$text .= "Install it or recompile php without --disable-phar";
break;
case 'unicode':
$text = PHP_EOL."The detect_unicode setting must be disabled.".PHP_EOL;
$text .= "Add the following to the end of your `php.ini`:".PHP_EOL;
$text .= " detect_unicode = Off";
$displayIniMessage = true;
break;
case 'suhosin':
$text = PHP_EOL."The suhosin.executor.include.whitelist setting is incorrect.".PHP_EOL;
$text .= "Add the following to the end of your `php.ini` or suhosin.ini (Example path [for Debian]: /etc/php5/cli/conf.d/suhosin.ini):".PHP_EOL;
$text .= " suhosin.executor.include.whitelist = phar ".$current;
$displayIniMessage = true;
break;
case 'php':
$text = PHP_EOL."Your PHP ({$current}) is too old, you must upgrade to PHP 5.3.2 or higher.";
break;
case 'allow_url_fopen':
$text = PHP_EOL."The allow_url_fopen setting is incorrect.".PHP_EOL;
$text .= "Add the following to the end of your `php.ini`:".PHP_EOL;
$text .= " allow_url_fopen = On";
$displayIniMessage = true;
break;
case 'ioncube':
$text = PHP_EOL."Your ionCube Loader extension ($current) is incompatible with Phar files.".PHP_EOL;
$text .= "Upgrade to ionCube 4.0.9 or higher or remove this line (path may be different) from your `php.ini` to disable it:".PHP_EOL;
$text .= " zend_extension = /usr/lib/php5/20090626+lfs/ioncube_loader_lin_5.3.so";
$displayIniMessage = true;
break;
}
if ($displayIniMessage) {
$text .= $iniMessage;
}
out($text, 'info');
}
out('');
return false;
}
if (!empty($warnings)) {
out("Some settings on your machine may cause stability issues with Phrozn.", 'error');
out('If you encounter issues, try to change the following:', 'error');
foreach ($warnings as $warning => $current) {
switch ($warning) {
case 'apc_cli':
$text = PHP_EOL."The apc.enable_cli setting is incorrect.".PHP_EOL;
$text .= "Add the following to the end of your `php.ini`:".PHP_EOL;
$text .= " apc.enable_cli = Off";
$displayIniMessage = true;
break;
case 'sigchild':
$text = PHP_EOL."PHP was compiled with --enable-sigchild which can cause issues on some platforms.".PHP_EOL;
$text .= "Recompile it without this flag if possible, see also:".PHP_EOL;
$text .= " https://bugs.php.net/bug.php?id=22999";
break;
case 'curlwrappers':
$text = PHP_EOL."PHP was compiled with --with-curlwrappers which will cause issues with HTTP authentication and GitHub.".PHP_EOL;
$text .= "Recompile it without this flag if possible";
break;
case 'openssl':
$text = PHP_EOL."The openssl extension is missing, which will reduce the security and stability of Phrozn.".PHP_EOL;
$text .= "If possible you should enable it or recompile php with --with-openssl";
break;
case 'php':
$text = PHP_EOL."Your PHP ({$current}) is quite old, upgrading to PHP 5.3.4 or higher is recommended.".PHP_EOL;
$text .= "Phrozn works with 5.3.2+ for most people, but there might be edge case issues.";
break;
}
if ($displayIniMessage) {
$text .= $iniMessage;
}
out($text, 'info');
}
out('');
return true;
}
if (!$quiet) {
out("All settings correct for using Phrozn", 'success');
}
return true;
}
/**
* installs phrozn to the current working directory
*/
function installPhrozn($installDir, $quiet)
{
$installPath = (is_dir($installDir) ? rtrim($installDir, '/').'/' : '') . 'phrozn.phar';
$installDir = realpath($installDir) ? realpath($installDir) : getcwd();
$file = $installDir.DIRECTORY_SEPARATOR.'phrozn.phar';
if (is_readable($file)) {
@unlink($file);
}
$retries = 3;
while ($retries--) {
if (!$quiet) {
out("Downloading...", 'info');
}
//$source = (extension_loaded('openssl') ? 'https' : 'http').'://phrozn.local/phrozn.phar';
$source = 'http://phrozn.local/phrozn.phar';
out($source);
$errorHandler = new ErrorHandler();
set_error_handler(array($errorHandler, 'handleError'));
if (!copy($source, $file, getStreamContext())) {
out('Download failed: '.$errorHandler->message, 'error');
}
restore_error_handler();
if ($errorHandler->message) {
continue;
}
try {
// test the phar validity
$phar = new Phar($file);
// free the variable to unlock the file
unset($phar);
break;
} catch (Exception $e) {
if (!$e instanceof UnexpectedValueException && !$e instanceof PharException) {
throw $e;
}
unlink($file);
if ($retries) {
if (!$quiet) {
out('The download is corrupt, retrying...', 'error');
}
} else {
out('The download is corrupt ('.$e->getMessage().'), aborting.', 'error');
exit(1);
}
}
}
if ($errorHandler->message) {
out('The download failed repeatedly, aborting.', 'error');
exit(1);
}
chmod($file, 0755);
if (!$quiet) {
out(PHP_EOL."Phrozn successfully installed to: " . $file, 'success', false);
out(PHP_EOL."Use it: php $installPath", 'info');
}
}
/**
* colorize output
*/
function out($text, $color = null, $newLine = true)
{
if (DIRECTORY_SEPARATOR == '\\') {
$hasColorSupport = false !== getenv('ANSICON');
} else {
$hasColorSupport = true;
}
$styles = array(
'success' => "\033[0;32m%s\033[0m",
'error' => "\033[31;31m%s\033[0m",
'info' => "\033[33;33m%s\033[0m"
);
$format = '%s';
if (isset($styles[$color]) && $hasColorSupport) {
$format = $styles[$color];
}
if ($newLine) {
$format .= PHP_EOL;
}
printf($format, $text);
}
/**
*
*/
function getStreamContext()
{
$options = array('http' => array());
// Handle system proxy
if (!empty($_SERVER['HTTP_PROXY']) || !empty($_SERVER['http_proxy'])) {
// Some systems seem to rely on a lowercased version instead...
$proxy = parse_url(!empty($_SERVER['http_proxy']) ? $_SERVER['http_proxy'] : $_SERVER['HTTP_PROXY']);
}
if (!empty($proxy)) {
$proxyURL = isset($proxy['scheme']) ? $proxy['scheme'] . '://' : '';
$proxyURL .= isset($proxy['host']) ? $proxy['host'] : '';
if (isset($proxy['port'])) {
$proxyURL .= ":" . $proxy['port'];
} elseif ('http://' == substr($proxyURL, 0, 7)) {
$proxyURL .= ":80";
} elseif ('https://' == substr($proxyURL, 0, 8)) {
$proxyURL .= ":443";
}
// http(s):// is not supported in proxy
$proxyURL = str_replace(array('http://', 'https://'), array('tcp://', 'ssl://'), $proxyURL);
if (0 === strpos($proxyURL, 'ssl:') && !extension_loaded('openssl')) {
throw new \RuntimeException('You must enable the openssl extension to use a proxy over https');
}
$options['http'] = array(
'proxy' => $proxyURL,
'request_fulluri' => true,
);
if (isset($proxy['user'])) {
$auth = $proxy['user'];
if (isset($proxy['pass'])) {
$auth .= ':' . $proxy['pass'];
}
$auth = base64_encode($auth);
$options['http']['header'] = "Proxy-Authorization: Basic {$auth}\r\n";
}
}
return stream_context_create($options);
}
class ErrorHandler
{
public $message = '';
public function handleError($code, $msg)
{
if ($this->message) {
$this->message .= "\n";
}
$this->message .= preg_replace('{^copy\(.*?\): }', '', $msg);
}
}
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