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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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* Compiles JMESPath expressions to PHP source code and executes it. |
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* |
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* JMESPath file names are stored in the cache directory using the following |
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* logic to determine the filename: |
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* |
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* 1. Start with the string "jmespath_" |
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* 2. Append the MD5 checksum of the expression. |
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* 3. Append ".php" |
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*/ |
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class CompilerRuntime |
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{ |
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private $parser; |
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private $compiler; |
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private $cacheDir; |
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private $interpreter; |
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/** |
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* @param string|null $dir Directory used to store compiled PHP files. |
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* @param Parser|null $parser JMESPath parser to utilize |
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* @throws \RuntimeException if the cache directory cannot be created |
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*/ |
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public function __construct($dir = null, Parser $parser = null) |
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{ |
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$this->parser = $parser ?: new Parser(); |
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$this->compiler = new TreeCompiler(); |
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$dir = $dir ?: \sys_get_temp_dir(); |
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if (!\is_dir($dir) && !\mkdir($dir, 0755, \true)) { |
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throw new \RuntimeException("Unable to create cache directory: {$dir}"); |
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} |
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$this->cacheDir = \realpath($dir); |
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$this->interpreter = new TreeInterpreter(); |
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} |
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/** |
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* Returns data from the provided input that matches a given JMESPath |
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* expression. |
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* |
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* @param string $expression JMESPath expression to evaluate |
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* @param mixed $data Data to search. This data should be data that |
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* is similar to data returned from json_decode |
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* using associative arrays rather than objects. |
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* |
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* @return mixed Returns the matching data or null |
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* @throws \RuntimeException |
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*/ |
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public function __invoke($expression, $data) |
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{ |
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$functionName = 'jmespath_' . \md5($expression); |
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if (!\function_exists($functionName)) { |
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$filename = "{$this->cacheDir}/{$functionName}.php"; |
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if (!\file_exists($filename)) { |
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$this->compile($filename, $expression, $functionName); |
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} |
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require $filename; |
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} |
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return $functionName($this->interpreter, $data); |
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} |
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private function compile($filename, $expression, $functionName) |
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{ |
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$code = $this->compiler->visit($this->parser->parse($expression), $functionName, $expression); |
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if (!\file_put_contents($filename, $code)) { |
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throw new \RuntimeException(\sprintf('Unable to write the compiled PHP code to: %s (%s)', $filename, \var_export(\error_get_last(), \true))); |
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} |
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} |
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} |
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