Commit de1c7534 authored by helmo's avatar helmo

Issue #2957156: Merge branch '2957156-composer-loader' into 7.x-3.x

parents 49c0d5ea 7ed4fb8e
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\ClassLoader;
/**
* ApcUniversalClassLoader implements a "universal" autoloader cached in APC for PHP 5.3.
*
* It is able to load classes that use either:
*
* * The technical interoperability standards for PHP 5.3 namespaces and
* class names (http://groups.google.com/group/php-standards/web/psr-0-final-proposal);
*
* * The PEAR naming convention for classes (http://pear.php.net/).
*
* Classes from a sub-namespace or a sub-hierarchy of PEAR classes can be
* looked for in a list of locations to ease the vendoring of a sub-set of
* classes for large projects.
*
* Example usage:
*
* require 'vendor/symfony/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
* require 'vendor/symfony/src/Symfony/Component/ClassLoader/ApcUniversalClassLoader.php';
*
* use Symfony\Component\ClassLoader\ApcUniversalClassLoader;
*
* $loader = new ApcUniversalClassLoader('apc.prefix.');
*
* // register classes with namespaces
* $loader->registerNamespaces(array(
* 'Symfony\Component' => __DIR__.'/component',
* 'Symfony' => __DIR__.'/framework',
* 'Sensio' => array(__DIR__.'/src', __DIR__.'/vendor'),
* ));
*
* // register a library using the PEAR naming convention
* $loader->registerPrefixes(array(
* 'Swift_' => __DIR__.'/Swift',
* ));
*
* // activate the autoloader
* $loader->register();
*
* In this example, if you try to use a class in the Symfony\Component
* namespace or one of its children (Symfony\Component\Console for instance),
* the autoloader will first look for the class under the component/
* directory, and it will then fallback to the framework/ directory if not
* found before giving up.
*
* @author Fabien Potencier <fabien@symfony.com>
* @author Kris Wallsmith <kris@symfony.com>
*
* @api
*/
class ApcUniversalClassLoader extends UniversalClassLoader
{
private $prefix;
/**
* Constructor.
*
* @param string $prefix A prefix to create a namespace in APC
*
* @api
*/
public function __construct($prefix)
{
if (!extension_loaded('apc')) {
throw new \RuntimeException('Unable to use ApcUniversalClassLoader as APC is not enabled.');
}
$this->prefix = $prefix;
}
/**
* Finds a file by class name while caching lookups to APC.
*
* @param string $class A class name to resolve to file
*/
public function findFile($class)
{
if (false === $file = apc_fetch($this->prefix.$class)) {
apc_store($this->prefix.$class, $file = parent::findFile($class));
}
return $file;
}
}
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\ClassLoader;
/**
* ClassCollectionLoader.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class ClassCollectionLoader
{
static private $loaded;
/**
* Loads a list of classes and caches them in one big file.
*
* @param array $classes An array of classes to load
* @param string $cacheDir A cache directory
* @param string $name The cache name prefix
* @param Boolean $autoReload Whether to flush the cache when the cache is stale or not
* @param Boolean $adaptive Whether to remove already declared classes or not
* @param string $extension File extension of the resulting file
*
* @throws \InvalidArgumentException When class can't be loaded
*/
static public function load($classes, $cacheDir, $name, $autoReload, $adaptive = false, $extension = '.php')
{
// each $name can only be loaded once per PHP process
if (isset(self::$loaded[$name])) {
return;
}
self::$loaded[$name] = true;
if ($adaptive) {
// don't include already declared classes
$classes = array_diff($classes, get_declared_classes(), get_declared_interfaces());
// the cache is different depending on which classes are already declared
$name = $name.'-'.substr(md5(implode('|', $classes)), 0, 5);
}
$cache = $cacheDir.'/'.$name.$extension;
// auto-reload
$reload = false;
if ($autoReload) {
$metadata = $cacheDir.'/'.$name.$extension.'.meta';
if (!file_exists($metadata) || !file_exists($cache)) {
$reload = true;
} else {
$time = filemtime($cache);
$meta = unserialize(file_get_contents($metadata));
if ($meta[1] != $classes) {
$reload = true;
} else {
foreach ($meta[0] as $resource) {
if (!file_exists($resource) || filemtime($resource) > $time) {
$reload = true;
break;
}
}
}
}
}
if (!$reload && file_exists($cache)) {
require_once $cache;
return;
}
$files = array();
$content = '';
foreach ($classes as $class) {
if (!class_exists($class) && !interface_exists($class) && (!function_exists('trait_exists') || !trait_exists($class))) {
throw new \InvalidArgumentException(sprintf('Unable to load class "%s"', $class));
}
$r = new \ReflectionClass($class);
$files[] = $r->getFileName();
$c = preg_replace(array('/^\s*<\?php/', '/\?>\s*$/'), '', file_get_contents($r->getFileName()));
// add namespace declaration for global code
if (!$r->inNamespace()) {
$c = "\nnamespace\n{\n".self::stripComments($c)."\n}\n";
} else {
$c = self::fixNamespaceDeclarations('<?php '.$c);
$c = preg_replace('/^\s*<\?php/', '', $c);
}
$content .= $c;
}
// cache the core classes
if (!is_dir(dirname($cache))) {
mkdir(dirname($cache), 0777, true);
}
self::writeCacheFile($cache, '<?php '.$content);
if ($autoReload) {
// save the resources
self::writeCacheFile($metadata, serialize(array($files, $classes)));
}
}
/**
* Adds brackets around each namespace if it's not already the case.
*
* @param string $source Namespace string
*
* @return string Namespaces with brackets
*/
static public function fixNamespaceDeclarations($source)
{
if (!function_exists('token_get_all')) {
return $source;
}
$output = '';
$inNamespace = false;
$tokens = token_get_all($source);
for ($i = 0, $max = count($tokens); $i < $max; $i++) {
$token = $tokens[$i];
if (is_string($token)) {
$output .= $token;
} elseif (in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
// strip comments
continue;
} elseif (T_NAMESPACE === $token[0]) {
if ($inNamespace) {
$output .= "}\n";
}
$output .= $token[1];
// namespace name and whitespaces
while (($t = $tokens[++$i]) && is_array($t) && in_array($t[0], array(T_WHITESPACE, T_NS_SEPARATOR, T_STRING))) {
$output .= $t[1];
}
if (is_string($t) && '{' === $t) {
$inNamespace = false;
--$i;
} else {
$output .= "\n{";
$inNamespace = true;
}
} else {
$output .= $token[1];
}
}
if ($inNamespace) {
$output .= "}\n";
}
return $output;
}
/**
* Writes a cache file.
*
* @param string $file Filename
* @param string $content Temporary file content
*
* @throws \RuntimeException when a cache file cannot be written
*/
static private function writeCacheFile($file, $content)
{
$tmpFile = tempnam(dirname($file), basename($file));
if (false !== @file_put_contents($tmpFile, $content) && @rename($tmpFile, $file)) {
chmod($file, 0644);
return;
}
throw new \RuntimeException(sprintf('Failed to write cache file "%s".', $file));
}
/**
* Removes comments from a PHP source string.
*
* We don't use the PHP php_strip_whitespace() function
* as we want the content to be readable and well-formatted.
*
* @param string $source A PHP string
*
* @return string The PHP string with the comments removed
*/
static private function stripComments($source)
{
if (!function_exists('token_get_all')) {
return $source;
}
$output = '';
foreach (token_get_all($source) as $token) {
if (is_string($token)) {
$output .= $token;
} elseif (!in_array($token[0], array(T_COMMENT, T_DOC_COMMENT))) {
$output .= $token[1];
}
}
// replace multiple new lines with a single newline
$output = preg_replace(array('/\s+$/Sm', '/\n+/S'), "\n", $output);
return $output;
}
}
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\ClassLoader;
/**
* Checks that the class is actually declared in the included file.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class DebugUniversalClassLoader extends UniversalClassLoader
{
/**
* Replaces all regular UniversalClassLoader instances by a DebugUniversalClassLoader ones.
*/
static public function enable()
{
if (!is_array($functions = spl_autoload_functions())) {
return;
}
foreach ($functions as $function) {
spl_autoload_unregister($function);
}
foreach ($functions as $function) {
if (is_array($function) && $function[0] instanceof UniversalClassLoader) {
$loader = new static();
$loader->registerNamespaceFallbacks($function[0]->getNamespaceFallbacks());
$loader->registerPrefixFallbacks($function[0]->getPrefixFallbacks());
$loader->registerNamespaces($function[0]->getNamespaces());
$loader->registerPrefixes($function[0]->getPrefixes());
$function[0] = $loader;
}
spl_autoload_register($function);
}
}
/**
* {@inheritDoc}
*/
public function loadClass($class)
{
if ($file = $this->findFile($class)) {
require $file;
if (!class_exists($class, false) && !interface_exists($class, false) && (!function_exists('trait_exists') || !trait_exists($class, false))) {
throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
}
}
}
}
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\ClassLoader;
/**
* A class loader that uses a mapping file to look up paths.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class MapClassLoader
{
private $map = array();
/**
* Constructor.
*
* @param array $map A map where keys are classes and values the absolute file path
*/
public function __construct(array $map)
{
$this->map = $map;
}
/**
* Registers this instance as an autoloader.
*
* @param Boolean $prepend Whether to prepend the autoloader or not
*/
public function register($prepend = false)
{
spl_autoload_register(array($this, 'loadClass'), true, $prepend);
}
/**
* Loads the given class or interface.
*
* @param string $class The name of the class
*/
public function loadClass($class)
{
if ('\\' === $class[0]) {
$class = substr($class, 1);
}
if (isset($this->map[$class])) {
require $this->map[$class];
}
}
/**
* Finds the path to the file where the class is defined.
*
* @param string $class The name of the class
*
* @return string|null The path, if found
*/
public function findFile($class)
{
if ('\\' === $class[0]) {
$class = substr($class, 1);
}
if (isset($this->map[$class])) {
return $this->map[$class];
}
}
}
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
// Tiny hack to make the code 5.2 compliant.
// namespace Symfony\Component\ClassLoader;
/**
* UniversalClassLoader implements a "universal" autoloader for PHP 5.3.
*
* It is able to load classes that use either:
*
* * The technical interoperability standards for PHP 5.3 namespaces and
* class names (http://groups.google.com/group/php-standards/web/psr-0-final-proposal);
*
* * The PEAR naming convention for classes (http://pear.php.net/).
*
* Classes from a sub-namespace or a sub-hierarchy of PEAR classes can be
* looked for in a list of locations to ease the vendoring of a sub-set of
* classes for large projects.
*
* Example usage:
*
* $loader = new UniversalClassLoader();
*
* // register classes with namespaces
* $loader->registerNamespaces(array(
* 'Symfony\Component' => __DIR__.'/component',
* 'Symfony' => __DIR__.'/framework',
* 'Sensio' => array(__DIR__.'/src', __DIR__.'/vendor'),
* ));
*
* // register a library using the PEAR naming convention
* $loader->registerPrefixes(array(
* 'Swift_' => __DIR__.'/Swift',
* ));
*
* // activate the autoloader
* $loader->register();
*
* In this example, if you try to use a class in the Symfony\Component
* namespace or one of its children (Symfony\Component\Console for instance),
* the autoloader will first look for the class under the component/
* directory, and it will then fallback to the framework/ directory if not
* found before giving up.
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @api
*/
class UniversalClassLoader
{
private $namespaces = array();
private $prefixes = array();
private $namespaceFallbacks = array();
private $prefixFallbacks = array();
/**
* Gets the configured namespaces.
*
* @return array A hash with namespaces as keys and directories as values
*/
public function getNamespaces()
{
return $this->namespaces;
}
/**
* Gets the configured class prefixes.
*
* @return array A hash with class prefixes as keys and directories as values
*/
public function getPrefixes()
{
return $this->prefixes;
}
/**
* Gets the directory(ies) to use as a fallback for namespaces.
*
* @return array An array of directories
*/
public function getNamespaceFallbacks()
{
return $this->namespaceFallbacks;
}
/**
* Gets the directory(ies) to use as a fallback for class prefixes.
*
* @return array An array of directories
*/
public function getPrefixFallbacks()
{
return $this->prefixFallbacks;
}
/**
* Registers the directory to use as a fallback for namespaces.
*
* @param array $dirs An array of directories
*
* @api
*/
public function registerNamespaceFallbacks(array $dirs)
{
$this->namespaceFallbacks = $dirs;
}
/**
* Registers the directory to use as a fallback for class prefixes.
*
* @param array $dirs An array of directories
*
* @api
*/
public function registerPrefixFallbacks(array $dirs)
{
$this->prefixFallbacks = $dirs;
}
/**
* Registers an array of namespaces
*
* @param array $namespaces An array of namespaces (namespaces as keys and locations as values)
*
* @api
*/
public function registerNamespaces(array $namespaces)
{
foreach ($namespaces as $namespace => $locations) {
$this->namespaces[$namespace] = (array) $locations;
}
}
/**
* Registers a namespace.
*
* @param string $namespace The namespace
* @param array|string $paths The location(s) of the namespace
*
* @api
*/
public function registerNamespace($namespace, $paths)
{
$this->namespaces[$namespace] = (array) $paths;
}
/**
* Registers an array of classes using the PEAR naming convention.
*
* @param array $classes An array of classes (prefixes as keys and locations as values)
*
* @api
*/
public function registerPrefixes(array $classes)
{
foreach ($classes as $prefix => $locations) {
$this->prefixes[$prefix] = (array) $locations;
}
}
/**
* Registers a set of classes using the PEAR naming convention.
*
* @param string $prefix The classes prefix
* @param array|string $paths The location(s) of the classes
*
* @api
*/
public function registerPrefix($prefix, $paths)
{
$this->prefixes[$prefix] = (array) $paths;
}
/**
* Registers this instance as an autoloader.
*
* @param Boolean $prepend Whether to prepend the autoloader or not
*
* @api
*/
public function register($prepend = false)
{
// We need a special call to the autoloader for PHP 5.2, missing the
// third parameter.
if (version_compare(PHP_VERSION, '5.3.0', '<')) {
spl_autoload_register(array($this, 'loadClass'), true);
}
else {
spl_autoload_register(array($this, 'loadClass'), true, $prepend);
}
}
/**
* Loads the given class or interface.
*
* @param string $class The name of the class
*/
public function loadClass($class)
{
if ($file = $this->findFile($class)) {
require $file;
}
}
/**
* Finds the path to the file where the class is defined.
*
* @param string $class The name of the class
*
* @return string|null The path, if found
*/
public function findFile($class)
{
if ('\\' == $class[0]) {
$class = substr($class, 1);
}
if (false !== $pos = strrpos($class, '\\')) {
// namespaced class name
$namespace = substr($class, 0, $pos);
foreach ($this->namespaces as $ns => $dirs) {
if (0 !== strpos($namespace, $ns)) {
continue;
}
foreach ($dirs as $dir) {
$className = substr($class, $pos + 1);
$file = $dir.DIRECTORY_SEPARATOR.str_replace('\\', DIRECTORY_SEPARATOR, $namespace).DIRECTORY_SEPARATOR.str_replace('_', DIRECTORY_SEPARATOR, $className).'.php';
if (file_exists($file)) {
return $file;
}
}
}
foreach ($this->namespaceFallbacks as $dir) {
$file = $dir.DIRECTORY_SEPARATOR.str_replace('\\', DIRECTORY_SEPARATOR, $class).'.php';
if (file_exists($file)) {
return $file;
}
}
} else {
// PEAR-like class name
foreach ($this->prefixes as $prefix => $dirs) {
if (0 !== strpos($class, $prefix)) {
continue;
}
foreach ($dirs as $dir) {