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First Local Commit - After Clean up.

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Signed-off-by: Rick Hays <rhays@haysgang.com>
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Rick Hays
2019-12-02 14:54:38 -06:00
commit 10412ab7f6
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system/Autoloader/Autoloader.php Normal file
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<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014-2019 British Columbia Institute of Technology
* Copyright (c) 2019 CodeIgniter Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @package CodeIgniter
* @author CodeIgniter Dev Team
* @copyright 2019 CodeIgniter Foundation
* @license https://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 4.0.0
* @filesource
*/
namespace CodeIgniter\Autoloader;
/**
* CodeIgniter Autoloader
*
* An autoloader that uses both PSR4 autoloading, and traditional classmaps.
*
* Given a foo-bar package of classes in the file system at the following paths:
*
* /path/to/packages/foo-bar/
* /src
* Baz.php # Foo\Bar\Baz
* Qux/
* Quux.php # Foo\Bar\Qux\Quux
*
* you can add the path to the configuration array that is passed in the constructor.
* The Config array consists of 2 primary keys, both of which are associative arrays:
* 'psr4', and 'classmap'.
*
* $Config = [
* 'psr4' => [
* 'Foo\Bar' => '/path/to/packages/foo-bar'
* ],
* 'classmap' => [
* 'MyClass' => '/path/to/class/file.php'
* ]
* ];
*
* Example:
*
* <?php
* // our configuration array
* $Config = [ ... ];
* $loader = new \CodeIgniter\Autoloader\Autoloader($Config);
*
* // register the autoloader
* $loader->register();
*
* @package CodeIgniter\Autoloader
*/
class Autoloader
{
/**
* Stores namespaces as key, and path as values.
*
* @var array
*/
protected $prefixes = [];
/**
* Stores class name as key, and path as values.
*
* @var array
*/
protected $classmap = [];
//--------------------------------------------------------------------
/**
* Reads in the configuration array (described above) and stores
* the valid parts that we'll need.
*
* @param \Config\Autoload $config
* @param \Config\Modules $moduleConfig
*
* @return $this
*/
public function initialize(\Config\Autoload $config, \Config\Modules $moduleConfig)
{
// We have to have one or the other, though we don't enforce the need
// to have both present in order to work.
if (empty($config->psr4) && empty($config->classmap))
{
throw new \InvalidArgumentException('Config array must contain either the \'psr4\' key or the \'classmap\' key.');
}
if (isset($config->psr4))
{
$this->addNamespace($config->psr4);
}
if (isset($config->classmap))
{
$this->classmap = $config->classmap;
}
// Should we load through Composer's namespaces, also?
if ($moduleConfig->discoverInComposer)
{
$this->discoverComposerNamespaces();
}
return $this;
}
//--------------------------------------------------------------------
/**
* Register the loader with the SPL autoloader stack.
*/
public function register()
{
// Since the default file extensions are searched
// in order of .inc then .php, but we always use .php,
// put the .php extension first to eek out a bit
// better performance.
// http://php.net/manual/en/function.spl-autoload.php#78053
spl_autoload_extensions('.php,.inc');
// Prepend the PSR4 autoloader for maximum performance.
spl_autoload_register([$this, 'loadClass'], true, true);
// Now prepend another loader for the files in our class map.
$config = is_array($this->classmap) ? $this->classmap : [];
spl_autoload_register(function ($class) use ($config) {
if (empty($config[$class]))
{
return false;
}
include_once $config[$class];
}, true, // Throw exception
true // Prepend
);
}
//--------------------------------------------------------------------
/**
* Registers namespaces with the autoloader.
*
* @param array|string $namespace
* @param string $path
*
* @return Autoloader
*/
public function addNamespace($namespace, string $path = null)
{
if (is_array($namespace))
{
foreach ($namespace as $prefix => $path)
{
$prefix = trim($prefix, '\\');
if (is_array($path))
{
foreach ($path as $dir)
{
$this->prefixes[$prefix][] = rtrim($dir, '/') . '/';
}
continue;
}
$this->prefixes[$prefix][] = rtrim($path, '/') . '/';
}
}
else
{
$this->prefixes[trim($namespace, '\\')][] = rtrim($path, '/') . '/';
}
return $this;
}
//--------------------------------------------------------------------
/**
* Get namespaces with prefixes as keys and paths as values.
*
* If a prefix param is set, returns only paths to the given prefix.
*
* @var string|null $prefix
*
* @return array
*/
public function getNamespace(string $prefix = null)
{
if ($prefix === null)
{
return $this->prefixes;
}
return $this->prefixes[trim($prefix, '\\')] ?? [];
}
//--------------------------------------------------------------------
/**
* Removes a single namespace from the psr4 settings.
*
* @param string $namespace
*
* @return Autoloader
*/
public function removeNamespace(string $namespace)
{
unset($this->prefixes[trim($namespace, '\\')]);
return $this;
}
//--------------------------------------------------------------------
/**
* Loads the class file for a given class name.
*
* @param string $class The fully qualified class name.
*
* @return string|false The mapped file on success, or boolean false
* on failure.
*/
public function loadClass(string $class)
{
$class = trim($class, '\\');
$class = str_ireplace('.php', '', $class);
$mapped_file = $this->loadInNamespace($class);
// Nothing? One last chance by looking
// in common CodeIgniter folders.
if (! $mapped_file)
{
$mapped_file = $this->loadLegacy($class);
}
return $mapped_file;
}
//--------------------------------------------------------------------
/**
* Loads the class file for a given class name.
*
* @param string $class The fully-qualified class name
*
* @return string|false The mapped file name on success, or boolean false on fail
*/
protected function loadInNamespace(string $class)
{
if (strpos($class, '\\') === false)
{
return false;
}
foreach ($this->prefixes as $namespace => $directories)
{
foreach ($directories as $directory)
{
$directory = rtrim($directory, '/');
if (strpos($class, $namespace) === 0)
{
$filePath = $directory . str_replace('\\', '/',
substr($class, strlen($namespace))) . '.php';
$filename = $this->requireFile($filePath);
if ($filename)
{
return $filename;
}
}
}
}
// never found a mapped file
return false;
}
//--------------------------------------------------------------------
/**
* Attempts to load the class from common locations in previous
* version of CodeIgniter, namely 'app/Libraries', and
* 'app/Models'.
*
* @param string $class The class name. This typically should NOT have a namespace.
*
* @return mixed The mapped file name on success, or boolean false on failure
*/
protected function loadLegacy(string $class)
{
// If there is a namespace on this class, then
// we cannot load it from traditional locations.
if (strpos($class, '\\') !== false)
{
return false;
}
$paths = [
APPPATH . 'Controllers/',
APPPATH . 'Libraries/',
APPPATH . 'Models/',
];
$class = str_replace('\\', '/', $class) . '.php';
foreach ($paths as $path)
{
if ($file = $this->requireFile($path . $class))
{
return $file;
}
}
return false;
}
//--------------------------------------------------------------------
/**
* A central way to require a file is loaded. Split out primarily
* for testing purposes.
*
* @param string $file
*
* @return string|false The filename on success, false if the file is not loaded
*/
protected function requireFile(string $file)
{
$file = $this->sanitizeFilename($file);
if (is_file($file))
{
require_once $file;
return $file;
}
return false;
}
//--------------------------------------------------------------------
/**
* Sanitizes a filename, replacing spaces with dashes.
*
* Removes special characters that are illegal in filenames on certain
* operating systems and special characters requiring special escaping
* to manipulate at the command line. Replaces spaces and consecutive
* dashes with a single dash. Trim period, dash and underscore from beginning
* and end of filename.
*
* @param string $filename
*
* @return string The sanitized filename
*/
public function sanitizeFilename(string $filename): string
{
// Only allow characters deemed safe for POSIX portable filenames.
// Plus the forward slash for directory separators since this might
// be a path.
// http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_278
// Modified to allow backslash and colons for on Windows machines.
$filename = preg_replace('/[^a-zA-Z0-9\s\/\-\_\.\:\\\\]/', '', $filename);
// Clean up our filename edges.
$filename = trim($filename, '.-_');
return $filename;
}
//--------------------------------------------------------------------
/**
* Locates all PSR4 compatible namespaces from Composer.
*/
protected function discoverComposerNamespaces()
{
if (! is_file(COMPOSER_PATH))
{
return false;
}
$composer = include COMPOSER_PATH;
$paths = $composer->getPrefixesPsr4();
unset($composer);
// Get rid of CodeIgniter so we don't have duplicates
if (isset($paths['CodeIgniter\\']))
{
unset($paths['CodeIgniter\\']);
}
// Composer stores namespaces with trailing slash. We don't.
$newPaths = [];
foreach ($paths as $key => $value)
{
$newPaths[rtrim($key, '\\ ')] = $value;
}
$this->prefixes = array_merge($this->prefixes, $newPaths);
}
}