file_aliases.module in File Aliases 6

Contains core functions for the File Aliases module.

File

file_aliases.module

<?php

/**
 * @file
 * Contains core functions for the File Aliases module.
 */

/**
 * Implements hook_menu().
 */
function file_aliases_menu() {
  $items['filefield_paths/alias/%'] = array(
    'page callback' => 'file_aliases_load_fid',
    'page arguments' => array(
      2,
    ),
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Implements hook_init().
 */
function file_aliases_init() {
  foreach (module_list() as $module) {
    if (file_exists($file = drupal_get_path('module', 'file_aliases') . '/modules/' . $module . '.inc')) {
      require_once $file;
    }
  }
}

/**
 * Implements hook_filefield_paths_field_settings().
 */
function file_aliases_filefield_paths_field_settings() {
  return array(
    'file_alias' => array(
      'title' => 'File alias',
      'sql' => 'filealias',
      'data' => array(
        'display' => 'file_alias_display',
      ),
      'form' => array(
        'file_alias' => array(
          '#type' => 'textfield',
          '#title' => t('File alias'),
          '#default_value' => (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC ? file_directory_path() : 'system/files') . '/[filefield-onlyname-original].[filefield-extension-original]',
          '#maxlength' => 512,
          '#size' => 128,
        ),
        'file_alias_display' => array(
          '#type' => 'checkbox',
          '#title' => t('Display alias'),
          '#description' => t('If checked, the file alias will be displayed instead of the file') . '.',
          '#default_value' => 0,
          '#weight' => 3,
        ),
      ),
    ),
  );
}

/**
 * Implements hook_filefield_paths_process_file().
 */
function file_aliases_filefield_paths_process_file($new, $file, $settings, $node, $update) {
  if ($new) {
    $file['filealias'] = filefield_paths_process_string($settings['filealias']['value'], 'node', $node, $settings['filealias']);
    $file['filealias'] = filefield_paths_process_string($file['filealias'], 'field', array(
      0 => $file['field'],
    ), $settings['filealias']);
    $path = 'filefield_paths/alias/' . $file['field']['fid'];
    $alias = drupal_get_path_alias($path);

    // Path already has an alias.
    if ($alias != $path) {
      path_set_alias(NULL, $alias);
    }

    // Rename alias if already in use.
    if (drupal_lookup_path('source', $file['filealias']) != NULL) {
      $info = pathinfo($file['filealias']);

      // PHP < 5.2: pathinfo() doesn't return 'filename' variable.
      $info['filename'] = isset($info['filename']) ? $info['filename'] : basename($file['filealias'], '.' . $info['extension']);
      $counter = 0;
      do {
        $file['filealias'] = $info['dirname'] . '/' . $info['filename'] . '_' . $counter++ . '.' . $info['extension'];
      } while (drupal_lookup_path('source', $file['filealias']) != NULL);
    }

    // Create Alias.
    path_set_alias('filefield_paths/alias/' . $file['field']['fid'], $file['filealias']);

    // Display Alias in Node Body and CCK Text fields.
    if ($settings['filealias']['display']) {

      // Regular expression to replace file reference with file alias.
      $pattern = array(
        'regex' => str_replace('/', '\\/', $file['filepath']['new']),
        'regex_enc' => str_replace('/', '\\/', drupal_urlencode($file['filepath']['new'])),
        'replace' => $file['filealias'],
      );

      // Process regular expression.
      _filefield_paths_replace_pattern($pattern, $node, $update);
    }
  }
}

/**
 * Implements hook_nodeapi().
 */
function file_aliases_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
  switch ($op) {
    case 'view':
      if (($ffp = filefield_paths_get_fields($node, $op)) == FALSE) {
        break;
      }
      $count = array();
      foreach ($ffp['#files'] as &$file) {
        if ($ffp['#settings'][$file['name']]['filealias']['display'] == TRUE) {
          $filefield_paths_alias = 'filefield_paths/alias/' . $file['field']['fid'];
          if (($alias = drupal_get_path_alias($filefield_paths_alias)) != $filefield_paths_alias) {

            // Calculate relative path.
            $path = variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC ? '' : '../../';
            if (empty($path)) {
              foreach (explode('/', file_directory_path()) as $dir) {
                $path .= '../';
              }
            }

            // Invoke file_aliases_hook_process().
            if (function_exists($function = 'file_aliases_' . $file['module'] . '_process')) {
              $function($node, $file, $path, $alias, $count);
            }
          }
        }
      }
      break;
  }
}
function file_aliases_load_fid($fid) {
  if (request_uri() == base_path() . 'filefield_paths/alias/' . $fid) {
    drupal_not_found();
    exit;
  }
  $result = db_fetch_object(db_query("SELECT filemime, filepath FROM {files} WHERE fid = %d", $fid));
  if (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PRIVATE) {
    file_download($result->filepath);
  }
  else {
    header('Content-Type: ' . $result->filemime);

    // Fix for IE/PDF download issue
    // @see http://drupal.org/node/411910
    header('Cache-Control: public');
    readfile($result->filepath);
  }
}
function file_aliases_file_download($filepath) {
  $fileinfo = pathinfo(drupal_get_path_alias($_GET['q']));
  return array(
    'Cache-Control: public',
    'Content-Disposition: attachment; filename="' . $fileinfo['basename'] . '"',
  );
}
function _file_aliases_display_alias($type, $field, $refresh = FALSE) {
  static $display = array();
  if (empty($display[$type][$field])) {
    $result = db_fetch_object(db_query("SELECT filealias FROM {filefield_paths} WHERE type = '%s' AND field = '%s'", $type, $field));
    $data = unserialize($result->filealias);
    $display[$type][$field] = $data['display'];
  }
  return $display[$type][$field];
}

/**
 * Implements hook_views_api.
 * Notifies the Views module that we're compatible with a particular API revision.
 */
function file_aliases_views_api() {
  return array(
    'api' => 2,
    'path' => drupal_get_path('module', 'file_aliases') . '/includes',
  );
}

Functions

Name	Description
file_aliases_filefield_paths_field_settings	Implements hook_filefield_paths_field_settings().
file_aliases_filefield_paths_process_file	Implements hook_filefield_paths_process_file().
file_aliases_file_download
file_aliases_init	Implements hook_init().
file_aliases_load_fid
file_aliases_menu	Implements hook_menu().
file_aliases_nodeapi	Implements hook_nodeapi().
file_aliases_views_api	Implements hook_views_api. Notifies the Views module that we're compatible with a particular API revision.
_file_aliases_display_alias