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composer/bin/installer

151 lines
3.5 KiB
PHP
Executable File

#!/usr/bin/env php
<?php
/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* 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', $argv);
if ($help) {
displayHelp();
exit(0);
}
$ok = checkPlatform();
if ($check && !$ok) {
exit(1);
}
if ($ok || $force) {
installComposer();
}
exit(0);
}
/**
* displays the help
*/
function displayHelp()
{
echo <<<EOF
Composer Installer
------------------
Options
--help this help
--check for checking environment only
--force forces the installation
EOF;
}
/**
* check the platform for possible issues on running composer
*/
function checkPlatform()
{
$errors = array();
if (false !== ini_get('detect_unicode')) {
$errors['unicode'] = 'On';
}
if (ini_get('phar.readonly')) {
$errors['readonly'] = 'On';
}
if (ini_get('phar.require_hash')) {
$errors['require_hash'] = 'On';
}
if ($suhosin = ini_get('suhosin.executor.include.whitelist') && (isset($suhosin) && false === stripos($suhosin, 'phar'))) {
$errors['suhosin'] = $suhosin;
}
if (PHP_VERSION < '5.3.2') {
$errors['php'] = PHP_VERSION;
}
if (!empty($errors)) {
out("Composer detected that you have enabled some settings in your `php.ini` file that can make Composer unable to work properly.".PHP_EOL, 'error');
echo PHP_EOL.'Make sure that you have changed options listed below:'.PHP_EOL;
foreach ($errors as $error => $actual) {
switch ($error) {
case 'unicode':
$text = " detect_unicode = Off (actual: {$actual})".PHP_EOL;
break;
case 'readonly':
$text = " phar.readonly = Off (actual: {$actual})".PHP_EOL;
break;
case 'require_hash':
$text = " phar.require_hash = Off (actual: {$actual})".PHP_EOL;
break;
case 'suhosin':
$text = " suhosin.executor.include.whitelist = phar (actual: {$actual})".PHP_EOL;
break;
case 'php':
$text = " PHP_VERSION (actual: {$actual})".PHP_EOL;
break;
}
out($text, 'info');
}
echo PHP_EOL;
return false;
}
out("All settings correct for using Composer".PHP_EOL,'success');
return true;
}
/**
* installs composer to the current working directory
*/
function installComposer()
{
$installDir = getcwd();
$file = $installDir . DIRECTORY_SEPARATOR . 'composer.phar';
if (is_readable($file)) {
@unlink($file);
}
$download = copy('http://getcomposer.org/composer.phar', $installDir.DIRECTORY_SEPARATOR.'composer.phar');
out(PHP_EOL."Composer successfully installed to: " . $file, 'success');
out(PHP_EOL."Use it: php composer.phar".PHP_EOL, 'info');
}
/**
* colorize output
*/
function out($text, $color = null)
{
$styles = array(
'success' => "\033[0;32m%s\033[0m",
'error' => "\033[31;31m%s\033[0m",
'info' => "\033[33;33m%s\033[0m"
);
echo sprintf(isset($styles[$color]) ? $styles[$color] : "%s", $text);
}