<?php

/**

 * @file

 * Install, update and uninstall functions for File module.

 */

/**

 * Implements hook_field_schema().

 */

function file_field_schema($field) {

  return array(

    'columns' => array(

      'fid' => array(

        'description' => 'The {file_managed}.fid being referenced in this field.',

        'type' => 'int',

        'not null' => FALSE,

        'unsigned' => TRUE,

      ),

      'display' => array(

        'description' => 'Flag to control whether this file should be displayed when viewing content.',

        'type' => 'int',

        'size' => 'tiny',

        'unsigned' => TRUE,

        'not null' => TRUE,

        'default' => 1,

      ),

      'description' => array(

        'description' => 'A description of the file.',

        'type' => 'text',

        'not null' => FALSE,

      ),

    ),

    'indexes' => array(

      'fid' => array('fid'),

    ),

    'foreign keys' => array(

      'fid' => array(

        'table' => 'file_managed',

        'columns' => array('fid' => 'fid'),

      ),

    ),

  );

}

/**

 * Implements hook_requirements().

 *

 * Display information about getting upload progress bars working.

 */

function file_requirements($phase) {

  $requirements = array();

  // Check the server's ability to indicate upload progress.

  if ($phase == 'runtime') {

    $implementation = file_progress_implementation();

    $apache = strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== FALSE;

    $fastcgi = strpos($_SERVER['SERVER_SOFTWARE'], 'mod_fastcgi') !== FALSE || strpos($_SERVER["SERVER_SOFTWARE"], 'mod_fcgi') !== FALSE;

    $description = NULL;

    if (!$apache) {

      $value = t('Not enabled');

      $description = t('Your server is not capable of displaying file upload progress. File upload progress requires an Apache server running PHP with mod_php.');

      $severity = REQUIREMENT_INFO;

    }

    elseif ($fastcgi) {

      $value = t('Not enabled');

      $description = t('Your server is not capable of displaying file upload progress. File upload progress requires PHP be run with mod_php and not as FastCGI.');

      $severity = REQUIREMENT_INFO;

    }

    elseif (!$implementation && extension_loaded('apc')) {

      $value = t('Not enabled');

      $description = t('Your server is capable of displaying file upload progress through APC, but it is not enabled. Add <code>apc.rfc1867 = 1</code> to your php.ini configuration. Alternatively, it is recommended to use <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>, which supports more than one simultaneous upload.');

      $severity = REQUIREMENT_INFO;

    }

    elseif (!$implementation) {

      $value = t('Not enabled');

      $description = t('Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> (preferred) or to install <a href="http://us2.php.net/apc">APC</a>.');

      $severity = REQUIREMENT_INFO;

    }

    elseif ($implementation == 'apc') {

      $value = t('Enabled (<a href="http://php.net/manual/en/apc.configuration.php#ini.apc.rfc1867">APC RFC1867</a>)');

      $description = t('Your server is capable of displaying file upload progress using APC RFC1867. Note that only one upload at a time is supported. It is recommended to use the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> if possible.');

      $severity = REQUIREMENT_OK;

    }

    elseif ($implementation == 'uploadprogress') {

      $value = t('Enabled (<a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>)');

      $severity = REQUIREMENT_OK;

    }

    $requirements['file_progress'] = array(

      'title' => t('Upload progress'),

      'value' => $value,

      'severity' => $severity,

      'description' => $description,

    );

  }

  return $requirements;

}