Exporter.php in Zircon Profile 8

Namespace

SebastianBergmann\Exporter

File

vendor/sebastian/exporter/src/Exporter.php

<?php

/*
 * This file is part of the Exporter package.
 *
 * (c) Sebastian Bergmann <[e-mail]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace SebastianBergmann\Exporter;

use SebastianBergmann\RecursionContext\Context;

/**
 * A nifty utility for visualizing PHP variables.
 *
 * <code>
 * <?php
 * use SebastianBergmann\Exporter\Exporter;
 *
 * $exporter = new Exporter;
 * print $exporter->export(new Exception);
 * </code>
 */
class Exporter {

  /**
   * Exports a value as a string
   *
   * The output of this method is similar to the output of print_r(), but
   * improved in various aspects:
   *
   *  - NULL is rendered as "null" (instead of "")
   *  - TRUE is rendered as "true" (instead of "1")
   *  - FALSE is rendered as "false" (instead of "")
   *  - Strings are always quoted with single quotes
   *  - Carriage returns and newlines are normalized to \n
   *  - Recursion and repeated rendering is treated properly
   *
   * @param  mixed  $value
   * @param  int    $indentation The indentation level of the 2nd+ line
   * @return string
   */
  public function export($value, $indentation = 0) {
    return $this
      ->recursiveExport($value, $indentation);
  }

  /**
   * @param  mixed   $data
   * @param  Context $context
   * @return string
   */
  public function shortenedRecursiveExport(&$data, Context $context = null) {
    $result = array();
    $exporter = new self();
    if (!$context) {
      $context = new Context();
    }
    $context
      ->add($data);
    foreach ($data as $key => $value) {
      if (is_array($value)) {
        if ($context
          ->contains($data[$key]) !== false) {
          $result[] = '*RECURSION*';
        }
        else {
          $result[] = sprintf('array(%s)', $this
            ->shortenedRecursiveExport($data[$key], $context));
        }
      }
      else {
        $result[] = $exporter
          ->shortenedExport($value);
      }
    }
    return implode(', ', $result);
  }

  /**
   * Exports a value into a single-line string
   *
   * The output of this method is similar to the output of
   * SebastianBergmann\Exporter\Exporter::export. This method guarantees
   * thought that the result contains now newlines.
   *
   * Newlines are replaced by the visible string '\n'. Contents of arrays
   * and objects (if any) are replaced by '...'.
   *
   * @param  mixed  $value
   * @return string
   * @see    SebastianBergmann\Exporter\Exporter::export
   */
  public function shortenedExport($value) {
    if (is_string($value)) {
      $string = $this
        ->export($value);
      if (strlen($string) > 40) {
        $string = substr($string, 0, 30) . '...' . substr($string, -7);
      }
      return str_replace("\n", '\\n', $string);
    }
    if (is_object($value)) {
      return sprintf('%s Object (%s)', get_class($value), count($this
        ->toArray($value)) > 0 ? '...' : '');
    }
    if (is_array($value)) {
      return sprintf('Array (%s)', count($value) > 0 ? '...' : '');
    }
    return $this
      ->export($value);
  }

  /**
   * Converts an object to an array containing all of its private, protected
   * and public properties.
   *
   * @param  mixed $value
   * @return array
   */
  public function toArray($value) {
    if (!is_object($value)) {
      return (array) $value;
    }
    $array = array();
    foreach ((array) $value as $key => $val) {

      // properties are transformed to keys in the following way:
      // private   $property => "\0Classname\0property"
      // protected $property => "\0*\0property"
      // public    $property => "property"
      if (preg_match('/^\\0.+\\0(.+)$/', $key, $matches)) {
        $key = $matches[1];
      }

      // See https://github.com/php/php-src/commit/5721132
      if ($key === "\0gcdata") {
        continue;
      }
      $array[$key] = $val;
    }

    // Some internal classes like SplObjectStorage don't work with the
    // above (fast) mechanism nor with reflection in Zend.
    // Format the output similarly to print_r() in this case
    if ($value instanceof \SplObjectStorage) {

      // However, the fast method does work in HHVM, and exposes the
      // internal implementation. Hide it again.
      if (property_exists('\\SplObjectStorage', '__storage')) {
        unset($array['__storage']);
      }
      elseif (property_exists('\\SplObjectStorage', 'storage')) {
        unset($array['storage']);
      }
      if (property_exists('\\SplObjectStorage', '__key')) {
        unset($array['__key']);
      }
      foreach ($value as $key => $val) {
        $array[spl_object_hash($val)] = array(
          'obj' => $val,
          'inf' => $value
            ->getInfo(),
        );
      }
    }
    return $array;
  }

  /**
   * Recursive implementation of export
   *
   * @param  mixed                                       $value       The value to export
   * @param  int                                         $indentation The indentation level of the 2nd+ line
   * @param  \SebastianBergmann\RecursionContext\Context $processed   Previously processed objects
   * @return string
   * @see    SebastianBergmann\Exporter\Exporter::export
   */
  protected function recursiveExport(&$value, $indentation, $processed = null) {
    if ($value === null) {
      return 'null';
    }
    if ($value === true) {
      return 'true';
    }
    if ($value === false) {
      return 'false';
    }
    if (is_float($value) && floatval(intval($value)) === $value) {
      return "{$value}.0";
    }
    if (is_resource($value)) {
      return sprintf('resource(%d) of type (%s)', $value, get_resource_type($value));
    }
    if (is_string($value)) {

      // Match for most non printable chars somewhat taking multibyte chars into account
      if (preg_match('/[^\\x09-\\x0d\\x20-\\xff]/', $value)) {
        return 'Binary String: 0x' . bin2hex($value);
      }
      return "'" . str_replace(array(
        "\r\n",
        "\n\r",
        "\r",
      ), array(
        "\n",
        "\n",
        "\n",
      ), $value) . "'";
    }
    $whitespace = str_repeat(' ', 4 * $indentation);
    if (!$processed) {
      $processed = new Context();
    }
    if (is_array($value)) {
      if (($key = $processed
        ->contains($value)) !== false) {
        return 'Array &' . $key;
      }
      $key = $processed
        ->add($value);
      $values = '';
      if (count($value) > 0) {
        foreach ($value as $k => $v) {
          $values .= sprintf('%s    %s => %s' . "\n", $whitespace, $this
            ->recursiveExport($k, $indentation), $this
            ->recursiveExport($value[$k], $indentation + 1, $processed));
        }
        $values = "\n" . $values . $whitespace;
      }
      return sprintf('Array &%s (%s)', $key, $values);
    }
    if (is_object($value)) {
      $class = get_class($value);
      if ($hash = $processed
        ->contains($value)) {
        return sprintf('%s Object &%s', $class, $hash);
      }
      $hash = $processed
        ->add($value);
      $values = '';
      $array = $this
        ->toArray($value);
      if (count($array) > 0) {
        foreach ($array as $k => $v) {
          $values .= sprintf('%s    %s => %s' . "\n", $whitespace, $this
            ->recursiveExport($k, $indentation), $this
            ->recursiveExport($v, $indentation + 1, $processed));
        }
        $values = "\n" . $values . $whitespace;
      }
      return sprintf('%s Object &%s (%s)', $class, $hash, $values);
    }
    return var_export($value, true);
  }

}

Classes

Name	Description
Exporter	A nifty utility for visualizing PHP variables.