edlp_d8/sites/all/modules/contrib/dev/devel/devel.module

<?php

/**
 * @file
 * This module holds functions useful for Drupal development.
 * Please contribute!
 */

define('DEVEL_ERROR_HANDLER_NONE', 0);
define('DEVEL_ERROR_HANDLER_STANDARD', 1);
define('DEVEL_ERROR_HANDLER_BACKTRACE_KINT', 2);
define('DEVEL_ERROR_HANDLER_BACKTRACE_DPM', 4);

define('DEVEL_MIN_TEXTAREA', 50);

use Drupal\comment\CommentInterface;
use Drupal\Core\Database\Database;
use Drupal\Core\Database\Query\AlterableInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Logger\RfcLogLevel;
use Drupal\Core\Render\Element;
use Drupal\Core\Utility\Error;

/**
 * Implements hook_help().
 */
function devel_help($route_name) {
  switch ($route_name) {
    case 'devel.reinstall':
      $output = '<p>' . t('<strong>Warning</strong> - will delete your module tables and configuration.') . '</p>';
      $output .= '<p>' . t('Uninstall and then install the selected modules. <code>hook_uninstall()</code> and <code>hook_install()</code> will be executed and the schema version number will be set to the most recent update number.') . '</p>';
      return $output;

    case 'devel/session':
      return '<p>' . t('Here are the contents of your <code>$_SESSION</code> variable.') . '</p>';

    case 'devel.state_system_page':
      return '<p>' . t('This is a list of state variables and their values. For more information read online documentation of <a href=":documentation">State API in Drupal 8</a>.', array(':documentation' => "https://www.drupal.org/developing/api/8/state")) . '</p>';

  }
}

/**
 * Implements hook_entity_type_alter().
 */
function devel_entity_type_alter(array &$entity_types) {
  /** @var $entity_types \Drupal\Core\Entity\EntityTypeInterface[] */
  foreach ($entity_types as $entity_type_id => $entity_type) {
    if ($entity_type->hasViewBuilderClass() && $entity_type->hasLinkTemplate('canonical')) {
      $entity_type->setLinkTemplate('devel-render', "/devel/$entity_type_id/{{$entity_type_id}}/render");
    }
    if (($entity_type->getFormClass('default') || $entity_type->getFormClass('edit')) && $entity_type->hasLinkTemplate('edit-form')) {
      $entity_type->setLinkTemplate('devel-load', "/devel/$entity_type_id/{{$entity_type_id}}");
    }
  }
}

/**
 * Implements hook_entity_operation().
 */
function devel_entity_operation(EntityInterface $entity) {
  $operations = array();
  if (\Drupal::currentUser()->hasPermission('access devel information')) {
    if ($entity->hasLinkTemplate('devel-load')) {
      $operations['devel'] = array(
        'title' => t('Devel'),
        'weight' => 100,
        'url' => $entity->toUrl('devel-load'),
      );
    }
    elseif ($entity->hasLinkTemplate('devel-render')) {
      $operations['devel'] = array(
        'title' => t('Devel'),
        'weight' => 100,
        'url' => $entity->toUrl('devel-render'),
      );
    }
  }
  return $operations;
}

/**
 * Sets message.
 */
function devel_set_message($msg, $type = NULL) {
  if (function_exists('drush_log')) {
    drush_log($msg, $type);
  }
  else {
    drupal_set_message($msg, $type, TRUE);
  }
}

/**
 * Gets error handlers.
 */
function devel_get_handlers() {
  $error_handlers = \Drupal::config('devel.settings')->get('error_handlers');
  if (!empty($error_handlers)) {
    unset($error_handlers[DEVEL_ERROR_HANDLER_NONE]);
  }
  return $error_handlers;
}

/**
 * Sets a new error handler or restores the prior one.
 */
function devel_set_handler($handlers) {
  if (empty($handlers)) {
    restore_error_handler();
  }
  elseif (count($handlers) == 1 && isset($handlers[DEVEL_ERROR_HANDLER_STANDARD])) {
    // Do nothing.
  }
  else {
    set_error_handler('backtrace_error_handler');
  }
}

/**
 * Displays backtrace showing the route of calls to the current error.
 *
 * @param int $error_level
 *   The level of the error raised.
 * @param string $message
 *   The error message.
 * @param string $filename
 *   The filename that the error was raised in.
 * @param int $line
 *   The line number the error was raised at.
 * @param array $context
 *   An array that points to the active symbol table at the point the error
 *   occurred.
 */
function backtrace_error_handler($error_level, $message, $filename, $line, $context) {
  // Hide stack trace and parameters from unqualified users.
  if (!\Drupal::currentUser()->hasPermission('access devel information')) {
    // Do what core does in bootstrap.inc and errors.inc.
    // (We need to duplicate the core code here rather than calling it
    // to avoid having the backtrace_error_handler() on top of the call stack.)
    if ($error_level & error_reporting()) {
      $types = drupal_error_levels();
      list($severity_msg, $severity_level) = $types[$error_level];
      $backtrace = debug_backtrace();
      $caller = Error::getLastCaller($backtrace);

      // We treat recoverable errors as fatal.
      _drupal_log_error(array(
        '%type' => isset($types[$error_level]) ? $severity_msg : 'Unknown error',
        '@message' => $message,
        '%function' => $caller['function'],
        '%file' => $caller['file'],
        '%line' => $caller['line'],
        'severity_level' => $severity_level,
        'backtrace' => $backtrace,
      ), $error_level == E_RECOVERABLE_ERROR);
    }

    return;
  }

  // Don't respond to the error if it was suppressed with a '@'
  if (error_reporting() == 0) {
    return;
  }

  // Don't respond to warning caused by ourselves.
  if (preg_match('#Cannot modify header information - headers already sent by \\([^\\)]*[/\\\\]devel[/\\\\]#', $message)) {
    return;
  }

  if ($error_level & error_reporting()) {
    // Only write each distinct NOTICE message once, as repeats do not give any
    // further information and can choke the page output.
    if ($error_level == E_NOTICE) {
      static $written = array();
      if (!empty($written[$line][$filename][$message])) {
        return;
      }
      $written[$line][$filename][$message] = TRUE;
    }

    $types = drupal_error_levels();
    list($severity_msg, $severity_level) = $types[$error_level];

    $backtrace = debug_backtrace();
    $caller = Error::getLastCaller($backtrace);
    $variables = array(
      '%type' => isset($types[$error_level]) ? $severity_msg : 'Unknown error',
      '@message' => $message,
      '%function' => $caller['function'],
      '%file' => $caller['file'],
      '%line' => $caller['line'],
    );
    $msg = t('%type: @message in %function (line %line of %file).', $variables);

    // Show message if error_level is ERROR_REPORTING_DISPLAY_SOME or higher.
    // (This is Drupal's error_level, which is different from $error_level,
    // and we purposely ignore the difference between _SOME and _ALL,
    // see #970688!)
    if (\Drupal::config('system.logging')->get('error_level') != 'hide') {
      $error_handlers = devel_get_handlers();
      if (!empty($error_handlers[DEVEL_ERROR_HANDLER_STANDARD])) {
        drupal_set_message($msg, ($severity_level <= RfcLogLevel::NOTICE ? 'error' : 'warning'), TRUE);
      }
      if (!empty($error_handlers[DEVEL_ERROR_HANDLER_BACKTRACE_KINT])) {
        print kprint_r(ddebug_backtrace(TRUE, 1), $return = TRUE, $msg);
      }
      if (!empty($error_handlers[DEVEL_ERROR_HANDLER_BACKTRACE_DPM])) {
        dpm(ddebug_backtrace(TRUE, 1), $msg, 'warning');
      }
    }

    \Drupal::logger('php')->log($severity_level, $msg);
  }
}

/**
 * Implements hook_page_attachments_alter().
 */
function devel_page_attachments_alter(&$page) {
  if (\Drupal::currentUser()->hasPermission('access devel information') && \Drupal::config('devel.settings')->get('page_alter')) {
    dpm($page, 'page');
  }
}

/**
 * Prints an object using either Kint (if enabled) or devel_print_object().
 *
 * @param array|object $object
 *   An array or object to print.
 * @param string $prefix
 * @todo: this parameter is not needed with Kint.
 *   Prefix for output items.
 *
 * @deprecated in Devel 8.x-dev, will be removed before Devel 8.0.
 *   Use kpr() or devel.dumper service instead.
 *
 * @TODO remove in https://www.drupal.org/node/2703343
 */
function kdevel_print_object($object, $prefix = NULL) {
  return kpr($object, TRUE, $prefix);
}

/**
 * Wrapper for DevelDumperManager::dump().
 *
 * Calls the http://www.firephp.org/ fb() function if it is found.
 *
 * @see \Drupal\devel\DevelDumperManager::dump()
 */
function dfb() {
  $args = func_get_args();
  \Drupal::service('devel.dumper')->dump($args, NULL, 'firephp');
}

/**
 * Wrapper for DevelDumperManager::dump().
 *
 * Calls dfb() to output a backtrace.
 *
 * @see \Drupal\devel\DevelDumperManager::dump()
 */
function dfbt($label) {
  \Drupal::service('devel.dumper')->dump(FirePHP::TRACE, $label, 'firephp');
}

/**
 * Wrapper for DevelDumperManager::dump().
 *
 * Wrapper for ChromePHP Class log method.
 *
 * @see \Drupal\devel\DevelDumperManager::dump()
 */
function dcp() {
  $args = func_get_args();
  \Drupal::service('devel.dumper')->dump($args, NULL, 'chromephp');
}

if (!function_exists('dd')) {
  /**
   * Wrapper for DevelDumperManager::debug().
   *
   * @see \Drupal\devel\DevelDumperManager::debug()
   */
  function dd($data, $label = NULL) {
    return \Drupal::service('devel.dumper')->debug($data, $label, 'default');
  }
}

/**
 * Wrapper for DevelDumperManager::message().
 *
 * Prints a variable to the 'message' area of the page.
 *
 * Uses drupal_set_message().
 *
 * @param $input
 *   An arbitrary value to output.
 * @param string $name
 *   Optional name for identifying the output.
 * @param string $type
 *   Optional message type for drupal_set_message(), defaults to 'status'.
 *
 * @return input
 *   The unaltered input value.
 *
 * @see \Drupal\devel\DevelDumperManager::message()
 */
function dpm($input, $name = NULL, $type = 'status') {
  \Drupal::service('devel.dumper')->message($input, $name, $type);
  return $input;
}

/**
 * Wrapper for DevelDumperManager::message().
 *
 * Displays a Variable::export() variable to the 'message' area of the page.
 *
 * Uses drupal_set_message().
 *
 * @param $input
 *   An arbitrary value to output.
 * @param string $name
 *   Optional name for identifying the output.
 *
 * @return input
 *   The unaltered input value.
 *
 * @see \Drupal\devel\DevelDumperManager::message()
 */
function dvm($input, $name = NULL) {
  \Drupal::service('devel.dumper')->message($input, $name, 'status', 'drupal_variable');
  return $input;
}

/**
 * An alias for dpm(), for historic reasons.
 */
function dsm($input, $name = NULL) {
  return dpm($input, $name);
}

/**
 * Wrapper for DevelDumperManager::dumpOrExport().
 *
 * An alias for the devel.dumper service. Saves carpal tunnel syndrome.
 *
 * @see \Drupal\devel\DevelDumperManager::dumpOrExport()
 */
function dpr($input, $export = FALSE, $name = NULL) {
  return \Drupal::service('devel.dumper')->dumpOrExport($input, $name, $export, 'default');
}

/**
 * Wrapper for DevelDumperManager::dumpOrExport().
 *
 * An alias for devel_dump(). Saves carpal tunnel syndrome.
 *
 * @see \Drupal\devel\DevelDumperManager::dumpOrExport()
 */
function kpr($input, $export = FALSE, $name = NULL) {
  return \Drupal::service('devel.dumper')->dumpOrExport($input, $name, $export);
}

/**
 * Kint print.
 *
 * @deprecated in Devel 8.x-dev, will be removed before Devel 8.0.
 *   Use kpr() or devel.dumper service instead.
 *
 * @TODO remove in https://www.drupal.org/node/2703343
 */
function kprint_r($input, $export = FALSE, $name = NULL, $function = 'print_r') {
  return kpr($input, $export, $name);
}

/**
 * Wrapper for DevelDumperManager::dumpOrExport().
 *
 * Like dpr(), but uses Variable::export() instead.
 *
 * @see \Drupal\devel\DevelDumperManager::dumpOrExport()
 */
function dvr($input, $export = FALSE, $name = NULL) {
  return \Drupal::service('devel.dumper')->dumpOrExport($input, $name, $export, 'drupal_variable');
}

/**
 * Prints the arguments passed into the current function.
 */
function dargs($always = TRUE) {
  static $printed;
  if ($always || !$printed) {
    $bt = debug_backtrace();
    print kdevel_print_object($bt[1]['args']);
    $printed = TRUE;
  }
}

/**
 * Prints a SQL string from a DBTNG Select object. Includes quoted arguments.
 *
 * @param object $query
 *   An object that implements the SelectInterface interface.
 * @param boolean $return
 *   Whether to return the string. Default is FALSE, meaning to print it
 *   and return $query instead.
 * @param string $name
 *   Optional name for identifying the output.
 *
 * @return object|string
 *   The $query object, or the query string if $return was TRUE.
 */
function dpq($query, $return = FALSE, $name = NULL) {
  if (\Drupal::currentUser()->hasPermission('access devel information')) {
    if (method_exists($query, 'preExecute')) {
      $query->preExecute();
    }
    $sql = (string) $query;
    $quoted = array();
    $connection = Database::getConnection();
    foreach ((array) $query->arguments() as $key => $val) {
      $quoted[$key] = is_null($val) ? 'NULL' : $connection->quote($val);
    }
    $sql = strtr($sql, $quoted);
    if ($return) {
      return $sql;
    }
    dpm($sql, $name);
  }
  return ($return ? NULL : $query);
}

/**
 * Prints a renderable array element to the screen using kprint_r().
 *
 * #pre_render and/or #post_render pass-through callback for kprint_r().
 *
 * @todo Investigate appending to #suffix.
 * @todo Investigate label derived from #id, #title, #name, and #theme.
 */
function devel_render() {
  $args = func_get_args();
  // #pre_render and #post_render pass the rendered $element as last argument.
  kprint_r(end($args));
  // #pre_render and #post_render expect the first argument to be returned.
  return reset($args);
}

/**
 * Prints the function call stack.
 *
 * @param $return
 *   Pass TRUE to return the formatted backtrace rather than displaying it in
 *   the browser via kprint_r().
 * @param $pop
 *   How many items to pop from the top of the stack; useful when calling from
 *   an error handler.
 * @param $options
 *   Options to pass on to PHP's debug_backtrace().
 *
 * @return string|NULL
 *   The formatted backtrace, if requested, or NULL.
 *
 * @see http://php.net/manual/en/function.debug-backtrace.php
 */
function ddebug_backtrace($return = FALSE, $pop = 0, $options = DEBUG_BACKTRACE_PROVIDE_OBJECT) {
  if (\Drupal::currentUser()->hasPermission('access devel information')) {
    $backtrace = debug_backtrace($options);
    while ($pop-- > 0) {
      array_shift($backtrace);
    }
    $counter = count($backtrace);
    $path = $backtrace[$counter - 1]['file'];
    $path = substr($path, 0, strlen($path) - 10);
    $paths[$path] = strlen($path) + 1;
    $paths[DRUPAL_ROOT] = strlen(DRUPAL_ROOT) + 1;
    $nbsp = "\xC2\xA0";

    // Show message if error_level is ERROR_REPORTING_DISPLAY_SOME or higher.
    // (This is Drupal's error_level, which is different from $error_level,
    // and we purposely ignore the difference between _SOME and _ALL,
    // see #970688!)
    if (\Drupal::config('system.logging')->get('error_level') != 'hide') {
      while (!empty($backtrace)) {
        $call = array();
        if (isset($backtrace[0]['file'])) {
          $call['file'] = $backtrace[0]['file'];
          foreach ($paths as $path => $len) {
            if (strpos($backtrace[0]['file'], $path) === 0) {
              $call['file'] = substr($backtrace[0]['file'], $len);
            }
          }
          $call['file'] .= ':' . $backtrace[0]['line'];
        }
        if (isset($backtrace[1])) {
          if (isset($backtrace[1]['class'])) {
            $function = $backtrace[1]['class'] . $backtrace[1]['type'] . $backtrace[1]['function'] . '()';
          }
          else {
            $function = $backtrace[1]['function'] . '()';
          }
          $backtrace[1] += array('args' => array());
          foreach ($backtrace[1]['args'] as $key => $value) {
            $call['args'][$key] = $value;
          }
        }
        else {
          $function = 'main()';
          $call['args'] = $_GET;
        }
        $nicetrace[($counter <= 10 ? $nbsp : '') . --$counter . ': ' . $function] = $call;
        array_shift($backtrace);
      }
      if ($return) {
        return $nicetrace;
      }
      kprint_r($nicetrace);
    }
  }
}

/*
 * Migration-related functions.
 */

/**
 * Regenerates the data in node_comment_statistics table.
 * Technique - http://www.artfulsoftware.com/infotree/queries.php?&bw=1280#101
 *
 * @return void
 */
function devel_rebuild_node_comment_statistics() {
  // Empty table.
  db_truncate('node_comment_statistics')->execute();

  // TODO: DBTNG. Ignore keyword is Mysql only? Is only used in the rare case
  // when two comments on the same node share same timestamp.
  $sql = "
    INSERT IGNORE INTO {node_comment_statistics} (nid, cid, last_comment_timestamp, last_comment_name, last_comment_uid, comment_count) (
      SELECT c.nid, c.cid, c.created, c.name, c.uid, c2.comment_count FROM {comment} c
      JOIN (
        SELECT c.nid, MAX(c.created) AS created, COUNT(*) AS comment_count FROM {comment} c WHERE status = 1 GROUP BY c.nid
      ) AS c2 ON c.nid = c2.nid AND c.created = c2.created
    )";
  db_query($sql, array(':published' => CommentInterface::PUBLISHED));

  // Insert records into the node_comment_statistics for nodes that are missing.
  $query = db_select('node', 'n');
  $query->leftJoin('node_comment_statistics', 'ncs', 'ncs.nid = n.nid');
  $query->addField('n', 'changed', 'last_comment_timestamp');
  $query->addField('n', 'uid', 'last_comment_uid');
  $query->addField('n', 'nid');
  $query->addExpression('0', 'comment_count');
  $query->addExpression('NULL', 'last_comment_name');
  $query->isNull('ncs.comment_count');

  db_insert('node_comment_statistics', array('return' => Database::RETURN_NULL))
    ->from($query)
    ->execute();
}

/**
 * Implements hook_form_FORM_ID_alter().
 *
 * Adds mouse-over hints on the Permissions page to display
 * language-independent machine names and module base names.
 *
 * @see \Drupal\user\Form\UserPermissionsForm::buildForm()
 */
function devel_form_user_admin_permissions_alter(&$form, FormStateInterface $form_state) {
  if (\Drupal::currentUser()->hasPermission('access devel information') && \Drupal::config('devel.settings')->get('raw_names')) {
    foreach (Element::children($form['permissions']) as $key) {
      if (isset($form['permissions'][$key][0])) {
        $form['permissions'][$key][0]['#wrapper_attributes']['title'] = $key;
      }
      elseif(isset($form['permissions'][$key]['description'])) {
        $form['permissions'][$key]['description']['#wrapper_attributes']['title']  = $key;
      }
    }
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 *
 * Adds mouse-over hints on the Modules page to display module base names.
 *
 * @see \Drupal\system\Form\ModulesListForm::buildForm()
 * @see theme_system_modules_details()
 */
function devel_form_system_modules_alter(&$form, FormStateInterface $form_state) {
  if (\Drupal::currentUser()->hasPermission('access devel information') && \Drupal::config('devel.settings')->get('raw_names', FALSE) && isset($form['modules']) && is_array($form['modules'])) {
    foreach (Element::children($form['modules']) as $group) {
      if (is_array($form['modules'][$group])) {
        foreach (Element::children($form['modules'][$group]) as $key) {
          if (isset($form['modules'][$group][$key]['name']['#markup'])) {
            $form['modules'][$group][$key]['name']['#markup'] = '<span title="' . $key . '">' . $form['modules'][$group][$key]['name']['#markup'] . '</span>';
          }
        }
      }
    }
  }
}

/**
 * Implements hook_query_TAG_alter().
 *
 * Makes debugging entity query much easier.
 *
 * Example usage:
 * @code
 * $query = \Drupal::entityQuery('node');
 * $query->condition('status', NODE_PUBLISHED);
 * $query->addTag('debug');
 * $query->execute();
 * @endcode
 */
function devel_query_debug_alter(AlterableInterface $query) {
  if (!$query->hasTag('debug-semaphore')) {
    $query->addTag('debug-semaphore');
    dpq($query);
  }
}