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https://github.com/friendica/friendica
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Config: Improve the node.config.php transformation
- Add more types - Improvement for assoziative arrays and key-value arrays - Add a lot more tests
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Philipp
parent
eda65296f5
commit
4c28f9cf9c
9 changed files with 301 additions and 43 deletions
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@ -26,67 +26,191 @@ namespace Friendica\Core\Config\Util;
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*/
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class ConfigFileTransformer
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{
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/**
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* The public method to start the encoding
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*
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* @param array $data A full config array
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*
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* @return string The config stream, which can be saved
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*/
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public static function encode(array $data): string
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{
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// Add the typical header values
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$dataString = '<?php' . PHP_EOL . PHP_EOL;
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$dataString .= 'return [' . PHP_EOL;
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$dataString .= 'return ';
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$categories = array_keys($data);
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$dataString .= static::extractArray($data);
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foreach ($categories as $category) {
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if (is_null($data[$category])) {
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$dataString .= "\t'$category' => null," . PHP_EOL;
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continue;
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}
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$dataString .= "\t'$category' => [" . PHP_EOL;
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if (is_array($data[$category])) {
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$keys = array_keys($data[$category]);
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foreach ($keys as $key) {
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$dataString .= static::mapConfigValue($key, $data[$category][$key]);
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}
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}
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$dataString .= "\t]," . PHP_EOL;
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}
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$dataString .= "];" . PHP_EOL;
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// the last array line, close it with a semicolon
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$dataString .= ";" . PHP_EOL;
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return $dataString;
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}
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protected static function extractArray(array $config, int $level = 0): string
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/**
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* Extracts an inner config array.
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* Either as a Key => Value pair array or as an assoziative array
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*
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* @param array $config The config array which should get extracted
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* @param int $level The current level of recursion (necessary for tab-indentation calculation)
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* @param bool $inAssoziativeArray If true, the current array resides inside another assoziative array. Different rules may be applicable
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*
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* @return string The config string
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*/
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protected static function extractArray(array $config, int $level = 0, bool $inAssoziativeArray = false): string
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{
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if (array_values($config) === $config) {
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return self::extractAssoziativeArray($config, $level, $inAssoziativeArray);
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} else {
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return self::extractKeyValueArray($config, $level, $inAssoziativeArray);
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}
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}
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/**
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* Extracts a key-value array and save it into a string
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* output:
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* [
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* 'key' => value,
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* 'key' => value,
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* ...
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* ]
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*
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* @param array $config The key-value array
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* @param int $level The current level of recursion (necessary for tab-indentation calculation)
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* @param bool $inAssoziativeArray If true, the current array resides inside another assoziative array. Different rules may be applicable
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*
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* @return string The config string
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*/
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protected static function extractKeyValueArray(array $config, int $level = 0, bool $inAssoziativeArray = false): string
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{
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$string = '';
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foreach ($config as $configKey => $configValue) {
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$string .= static::mapConfigValue($configKey, $configValue, $level);
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// Because we're in an assoziative array, we have to add a line-break first
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if ($inAssoziativeArray) {
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$string .= PHP_EOL . str_repeat("\t", $level);
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}
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// Add a typical Line break for a taxative list of key-value pairs
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$string .= '[' . PHP_EOL;
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foreach ($config as $configKey => $configValue) {
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$string .= str_repeat("\t", $level + 1) .
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"'$configKey' => " .
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static::transformConfigValue($configValue, $level) .
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',' . PHP_EOL;
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}
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$string .= str_repeat("\t", $level) . ']';
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return $string;
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}
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protected static function mapConfigValue(string $key, $value, $level = 0): string
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/**
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* Extracts an assoziative array and save it into a string
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* output1 - simple:
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* [ value, value, value ]
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*
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* output2 - complex:
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* [
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* [ value, value, value ],
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* value,
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* [
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* key => value,
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* key => value,
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* ],
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* ]
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*
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* @param array $config The assoziative array
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* @param int $level The current level of recursion (necessary for tab-indentation calculation)
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* @param bool $inAssoziativeArray If true, the current array resides inside another assoziative array. Different rules may be applicable
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*
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* @return string The config string
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*/
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protected static function extractAssoziativeArray(array $config, int $level = 0, bool $inAssoziativeArray = false): string
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{
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$string = str_repeat("\t", $level + 2) . "'$key' => ";
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$string = '[';
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if (is_null($value)) {
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$string .= "null,";
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} elseif (is_array($value)) {
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$string .= "[" . PHP_EOL;
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$string .= static::extractArray($value, ++$level);
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$string .= str_repeat("\t", $level + 1) . '],';
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} elseif (is_bool($value)) {
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$string .= ($value ? 'true' : 'false') . ",";
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} elseif (is_numeric($value)) {
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$string .= $value . ",";
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} else {
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$string .= sprintf('\'%s\',', addcslashes($value, '\'\\'));
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$countConfigValues = count($config);
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// multiline defines, if each entry uses a new line
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$multiline = false;
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// Search if any value is an array, because then other formatting rules are applicable
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foreach ($config as $item) {
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if (is_array($item)) {
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$multiline = true;
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break;
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}
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}
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$string .= PHP_EOL;
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for ($i = 0; $i < $countConfigValues; $i++) {
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$isArray = is_array($config[$i]);
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/**
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* In case this is an array in an array, directly extract this array again and continue
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* Skip any other logic since this isn't applicable for an array in an array
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*/
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if ($isArray) {
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$string .= PHP_EOL . str_repeat("\t", $level + 1);
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$string .= static::extractArray($config[$i], $level + 1, $inAssoziativeArray) . ',';
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continue;
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}
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if ($multiline) {
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$string .= PHP_EOL . str_repeat("\t", $level + 1);
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}
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$string .= static::transformConfigValue($config[$i], $level, true);
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// add trailing commas or whitespaces for certain config entries
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if (($i < ($countConfigValues - 1))) {
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$string .= ',';
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if (!$multiline) {
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$string .= ' ';
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}
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}
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}
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// Add a new line for the last bracket as well
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if ($multiline) {
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$string .= PHP_EOL . str_repeat("\t", $level);
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}
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$string .= ']';
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return $string;
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}
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/**
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* Transforms one config value and returns the corresponding text-representation
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*
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* @param mixed $value Any value to transform
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* @param int $level The current level of recursion (necessary for tab-indentation calculation)
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* @param bool $inAssoziativeArray If true, the current array resides inside another assoziative array. Different rules may be applicable
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*
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* @return string
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*/
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protected static function transformConfigValue($value, int $level = 0, bool $inAssoziativeArray = false): string
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{
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switch (gettype($value)) {
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case "boolean":
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return ($value ? 'true' : 'false');
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case "integer":
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case "double":
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return $value;
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case "string":
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return sprintf('\'%s\'', addcslashes($value, '\'\\'));
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case "array":
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return static::extractArray($value, ++$level, $inAssoziativeArray);
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case "NULL":
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return "null";
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case "object":
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case "resource":
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case "resource (closed)":
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throw new \InvalidArgumentException(sprintf('%s in configs are not supported yet.', gettype($value)));
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case "unknown type":
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throw new \InvalidArgumentException(sprintf('%s is an unknown value', $value));
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default:
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throw new \InvalidArgumentException(sprintf('%s is currently unsupported', $value));
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}
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}
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}
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