PHP Classes

File: application/modules/extensions/aws/JmesPath/Env.php

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File: application/modules/extensions/aws/JmesPath/Env.php
Role: Application script
Content type: text/plain
Description: Application script
Class: Pretty PHP S3 Files Manager
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Author: By
Last change:
Date: 8 years ago
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Contents

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<?php
namespace JmesPath;

/**
 * Provides a simple environment based search.
 *
 * The runtime utilized by the Env class can be customized via environment
 * variables. If the JP_PHP_COMPILE environment variable is specified, then the
 * CompilerRuntime will be utilized. If set to "on", JMESPath expressions will
 * be cached to the system's temp directory. Set the environment variable to
 * a string to cache expressions to a specific directory.
 */
final class Env
{
    const
COMPILE_DIR = 'JP_PHP_COMPILE';

   
/**
     * Returns data from the input array that matches a JMESPath expression.
     *
     * @param string $expression JMESPath expression to evaluate
     * @param mixed $data JSON-like data to search
     *
     * @return mixed|null Returns the matching data or null
     */
   
public static function search($expression, $data)
    {
        static
$runtime;
        if (!
$runtime) {
           
$runtime = Env::createRuntime();
        }
        return
$runtime($expression, $data);
    }

   
/**
     * Creates a JMESPath runtime based on environment variables and extensions
     * available on a system.
     *
     * @return callable
     */
   
public static function createRuntime()
    {
        switch (
$compileDir = getenv(self::COMPILE_DIR)) {
            case
false: return new AstRuntime();
            case
'on': return new CompilerRuntime();
            default: return new
CompilerRuntime($compileDir);
        }
    }

   
/**
     * Delete all previously compiled JMESPath files from the JP_COMPILE_DIR
     * directory or sys_get_temp_dir().
     *
     * @return int Returns the number of deleted files.
     */
   
public static function cleanCompileDir()
    {
       
$total = 0;
       
$compileDir = getenv(self::COMPILE_DIR) ?: sys_get_temp_dir();
        foreach (
glob("{$compileDir}/jmespath_*.php") as $file) {
           
$total++;
           
unlink($file);
        }

        return
$total;
    }
}