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<?php |
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|
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namespace Dudlewebs\WPMCS\s3\JmesPath; |
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|
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/** |
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* Provides a simple environment based search. |
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* |
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* The runtime utilized by the Env class can be customized via environment |
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* variables. If the JP_PHP_COMPILE environment variable is specified, then the |
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* CompilerRuntime will be utilized. If set to "on", JMESPath expressions will |
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* be cached to the system's temp directory. Set the environment variable to |
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* a string to cache expressions to a specific directory. |
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*/ |
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final class Env |
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{ |
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const COMPILE_DIR = 'JP_PHP_COMPILE'; |
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/** |
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* Returns data from the input array that matches a JMESPath expression. |
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* |
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* @param string $expression JMESPath expression to evaluate |
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* @param mixed $data JSON-like data to search |
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* |
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* @return mixed Returns the matching data or null |
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*/ |
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public static function search($expression, $data) |
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{ |
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static $runtime; |
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if (!$runtime) { |
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$runtime = Env::createRuntime(); |
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} |
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return $runtime($expression, $data); |
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} |
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/** |
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* Creates a JMESPath runtime based on environment variables and extensions |
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* available on a system. |
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* |
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* @return callable |
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*/ |
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public static function createRuntime() |
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{ |
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switch ($compileDir = self::getEnvVariable(self::COMPILE_DIR)) { |
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case \false: |
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return new AstRuntime(); |
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case 'on': |
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return new CompilerRuntime(); |
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default: |
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return new CompilerRuntime($compileDir); |
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} |
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} |
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/** |
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* Delete all previously compiled JMESPath files from the JP_COMPILE_DIR |
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* directory or sys_get_temp_dir(). |
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* |
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* @return int Returns the number of deleted files. |
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*/ |
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public static function cleanCompileDir() |
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{ |
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$total = 0; |
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$compileDir = self::getEnvVariable(self::COMPILE_DIR) ?: \sys_get_temp_dir(); |
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foreach (\glob("{$compileDir}/jmespath_*.php") as $file) { |
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$total++; |
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\unlink($file); |
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} |
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return $total; |
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} |
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/** |
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* Reads an environment variable from $_SERVER, $_ENV or via getenv(). |
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* |
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* @param string $name |
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* |
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* @return string|null |
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*/ |
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private static function getEnvVariable($name) |
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{ |
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if (\array_key_exists($name, $_SERVER)) { |
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return $_SERVER[$name]; |
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} |
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if (\array_key_exists($name, $_ENV)) { |
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return $_ENV[$name]; |
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} |
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$value = \getenv($name); |
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return $value === \false ? null : $value; |
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} |
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} |
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