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Mini Shell
Mini Shell
<?php
/**
* Hoa
*
*
* @license
*
* New BSD License
*
* Copyright © 2007-2017, Hoa community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Hoa nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
namespace Psy\Readline\Hoa;
/**
* Root of the `hoa://` protocol.
*/
class Protocol extends ProtocolNode
{
/**
* No resolution value.
*
* @const string
*/
const NO_RESOLUTION = '/hoa/flatland';
/**
* Singleton.
*/
private static $_instance = null;
/**
* Cache of resolver.
*/
private static $_cache = [];
/**
* Initialize the protocol.
*/
public function __construct()
{
$this->initialize();
return;
}
/**
* Singleton.
* To use the `hoa://` protocol shared by everyone.
*/
public static function getInstance(): self
{
if (null === static::$_instance) {
static::$_instance = new self();
}
return static::$_instance;
}
/**
* Initialize the protocol.
*/
protected function initialize()
{
$root = \dirname(__DIR__, 3);
$argv0 = \realpath($_SERVER['argv'][0]);
$cwd =
'cli' === \PHP_SAPI
? false !== $argv0 ? \dirname($argv0) : ''
: \getcwd();
$this[] = new ProtocolNode(
'Application',
$cwd.\DIRECTORY_SEPARATOR,
[
new ProtocolNode('Public', 'Public'.\DIRECTORY_SEPARATOR),
]
);
$this[] = new ProtocolNode(
'Data',
\dirname($cwd).\DIRECTORY_SEPARATOR,
[
new ProtocolNode(
'Etc',
'Etc'.\DIRECTORY_SEPARATOR,
[
new ProtocolNode('Configuration', 'Configuration'.\DIRECTORY_SEPARATOR),
new ProtocolNode('Locale', 'Locale'.\DIRECTORY_SEPARATOR),
]
),
new ProtocolNode('Lost+found', 'Lost+found'.\DIRECTORY_SEPARATOR),
new ProtocolNode('Temporary', 'Temporary'.\DIRECTORY_SEPARATOR),
new ProtocolNode(
'Variable',
'Variable'.\DIRECTORY_SEPARATOR,
[
new ProtocolNode('Cache', 'Cache'.\DIRECTORY_SEPARATOR),
new ProtocolNode('Database', 'Database'.\DIRECTORY_SEPARATOR),
new ProtocolNode('Log', 'Log'.\DIRECTORY_SEPARATOR),
new ProtocolNode('Private', 'Private'.\DIRECTORY_SEPARATOR),
new ProtocolNode('Run', 'Run'.\DIRECTORY_SEPARATOR),
new ProtocolNode('Test', 'Test'.\DIRECTORY_SEPARATOR),
]
),
]
);
$this[] = new ProtocolNodeLibrary(
'Library',
$root.\DIRECTORY_SEPARATOR.'Hoathis'.\DIRECTORY_SEPARATOR.';'.
$root.\DIRECTORY_SEPARATOR.'Hoa'.\DIRECTORY_SEPARATOR
);
}
/**
* Resolve (unfold) an `hoa://` path to its real resource.
*
* If `$exists` is set to `true`, try to find the first that exists,
* otherwise returns the first solution. If `$unfold` is set to `true`,
* it returns all the paths.
*/
public function resolve(string $path, bool $exists = true, bool $unfold = false)
{
if (\substr($path, 0, 6) !== 'hoa://') {
if (true === \is_dir($path)) {
$path = \rtrim($path, '/\\');
if ('' === $path) {
$path = '/';
}
}
return $path;
}
if (isset(self::$_cache[$path])) {
$handle = self::$_cache[$path];
} else {
$out = $this->_resolve($path, $handle);
// Not a path but a resource.
if (!\is_array($handle)) {
return $out;
}
$handle = \array_values(\array_unique($handle, \SORT_REGULAR));
foreach ($handle as &$entry) {
if (true === \is_dir($entry)) {
$entry = \rtrim($entry, '/\\');
if ('' === $entry) {
$entry = '/';
}
}
}
self::$_cache[$path] = $handle;
}
if (true === $unfold) {
if (true !== $exists) {
return $handle;
}
$out = [];
foreach ($handle as $solution) {
if (\file_exists($solution)) {
$out[] = $solution;
}
}
return $out;
}
if (true !== $exists) {
return $handle[0];
}
foreach ($handle as $solution) {
if (\file_exists($solution)) {
return $solution;
}
}
return static::NO_RESOLUTION;
}
/**
* Clear the cache.
*/
public static function clearCache()
{
self::$_cache = [];
}
}
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