Файл: system/vendor/laminas/laminas-zendframework-bridge/src/ConfigPostProcessor.php
Строк: 274
<?php
/**
* @see https://github.com/laminas/laminas-zendframework-bridge for the canonical source repository
* @copyright https://github.com/laminas/laminas-zendframework-bridge/blob/master/COPYRIGHT.md
* @license https://github.com/laminas/laminas-zendframework-bridge/blob/master/LICENSE.md New BSD License
*/
namespace LaminasZendFrameworkBridge;
class ConfigPostProcessor
{
/** @var array String keys => string values */
private $exactReplacements = [
'zend-expressive' => 'mezzio',
'zf-apigility' => 'api-tools',
];
/** @var Replacements */
private $replacements;
/** @var callable[] */
private $rulesets;
public function __construct()
{
$this->replacements = new Replacements();
/* Define the rulesets for replacements.
*
* Each ruleset has the following signature:
*
* @param mixed $value
* @param string[] $keys Full nested key hierarchy leading to the value
* @return null|callable
*
* If no match is made, a null is returned, allowing it to fallback to
* the next ruleset in the list. If a match is made, a callback is returned,
* and that will be used to perform the replacement on the value.
*
* The callback should have the following signature:
*
* @param mixed $value
* @param string[] $keys
* @return mixed The transformed value
*/
$this->rulesets = [
// Exact values
function ($value) {
return is_string($value) && isset($this->exactReplacements[$value])
? [$this, 'replaceExactValue']
: null;
},
// Router (MVC applications)
// We do not want to rewrite these.
function ($value, array $keys) {
$key = array_pop($keys);
// Only worried about a top-level "router" key.
return $key === 'router' && count($keys) === 0 && is_array($value)
? [$this, 'noopReplacement']
: null;
},
// Aliases and invokables
function ($value, array $keys) {
static $keysOfInterest;
$keysOfInterest = $keysOfInterest ?: ['aliases', 'invokables'];
$key = array_pop($keys);
return in_array($key, $keysOfInterest, true) && is_array($value)
? [$this, 'replaceDependencyAliases']
: null;
},
// Array values
function ($value, array $keys) {
return 0 !== count($keys) && is_array($value)
? [$this, '__invoke']
: null;
},
];
}
/**
* @param string[] $keys Hierarchy of keys, for determining location in
* nested configuration.
* @return array
*/
public function __invoke(array $config, array $keys = [])
{
$rewritten = [];
foreach ($config as $key => $value) {
// Determine new key from replacements
$newKey = is_string($key) ? $this->replace($key, $keys) : $key;
// Keep original values with original key, if the key has changed, but only at the top-level.
if (empty($keys) && $newKey !== $key) {
$rewritten[$key] = $value;
}
// Perform value replacements, if any
$newValue = $this->replace($value, $keys, $newKey);
// Key does not already exist and/or is not an array value
if (! array_key_exists($newKey, $rewritten) || ! is_array($rewritten[$newKey])) {
// Do not overwrite existing values with null values
$rewritten[$newKey] = array_key_exists($newKey, $rewritten) && null === $newValue
? $rewritten[$newKey]
: $newValue;
continue;
}
// New value is null; nothing to do.
if (null === $newValue) {
continue;
}
// Key already exists as an array value, but $value is not an array
if (! is_array($newValue)) {
$rewritten[$newKey][] = $newValue;
continue;
}
// Key already exists as an array value, and $value is also an array
$rewritten[$newKey] = static::merge($rewritten[$newKey], $newValue);
}
return $rewritten;
}
/**
* Perform substitutions as needed on an individual value.
*
* The $key is provided to allow fine-grained selection of rewrite rules.
*
* @param mixed $value
* @param string[] $keys Key hierarchy
* @param null|int|string $key
* @return mixed
*/
private function replace($value, array $keys, $key = null)
{
// Add new key to the list of keys.
// We do not need to remove it later, as we are working on a copy of the array.
array_push($keys, $key);
// Identify rewrite strategy and perform replacements
$rewriteRule = $this->replacementRuleMatch($value, $keys);
return $rewriteRule($value, $keys);
}
/**
* Merge two arrays together.
*
* If an integer key exists in both arrays, the value from the second array
* will be appended to the first array. If both values are arrays, they are
* merged together, else the value of the second array overwrites the one
* of the first array.
*
* Based on zend-stdlib ZendStdlibArrayUtils::merge
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
*
* @return array
*/
public static function merge(array $a, array $b)
{
foreach ($b as $key => $value) {
if (! isset($a[$key]) && ! array_key_exists($key, $a)) {
$a[$key] = $value;
continue;
}
if (null === $value && array_key_exists($key, $a)) {
// Leave as-is if value from $b is null
continue;
}
if (is_int($key)) {
$a[] = $value;
continue;
}
if (is_array($value) && is_array($a[$key])) {
$a[$key] = static::merge($a[$key], $value);
continue;
}
$a[$key] = $value;
}
return $a;
}
/**
* @param mixed $value
* @param null|int|string $key
* @return callable Callable to invoke with value
*/
private function replacementRuleMatch($value, $key = null)
{
foreach ($this->rulesets as $ruleset) {
$result = $ruleset($value, $key);
if (is_callable($result)) {
return $result;
}
}
return [$this, 'fallbackReplacement'];
}
/**
* Replace a value using the translation table, if the value is a string.
*
* @param mixed $value
* @return mixed
*/
private function fallbackReplacement($value)
{
return is_string($value)
? $this->replacements->replace($value)
: $value;
}
/**
* Replace a value matched exactly.
*
* @param mixed $value
* @return mixed
*/
private function replaceExactValue($value)
{
return $this->exactReplacements[$value];
}
/**
* Rewrite dependency aliases array
*
* In this case, we want to keep the alias as-is, but rewrite the target.
*
* This same logic can be used for invokables, which are essentially just
* an alias map.
*
* @return array
*/
private function replaceDependencyAliases(array $aliases)
{
foreach ($aliases as $alias => $target) {
$aliases[$alias] = $this->replacements->replace($target);
}
return $aliases;
}
/**
* @param mixed $value
* @return mixed Returns $value verbatim.
*/
private function noopReplacement($value)
{
return $value;
}
}