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   1  <?php
   2  
   3  /**
   4   * @file
   5   * Theme functions used for normal file output.
   6   *
   7   * Uses content.module to store the fid and field specific metadata,
   8   * and Drupal's {files} table to store the actual file data.
   9   */
  10  
  11  /**
  12   * Return an image with an appropriate icon for the given file.
  13   *
  14   * @param $file
  15   *   A file object for which to make an icon.
  16   */
  17  function theme_filefield_icon($file) {
  18    if (is_object($file)) {
  19      $file = (array) $file;
  20    }
  21    $mime = check_plain($file['filemime']);
  22  
  23    $dashed_mime = strtr($mime, array('/' => '-', '+' => '-'));
  24  
  25    if ($icon_url = filefield_icon_url($file)) {
  26      return '<img class="filefield-icon field-icon-'. $dashed_mime .'"  alt="'. t('@mime icon', array('@mime' => $mime)) .'" src="'. $icon_url .'" />';
  27    }
  28  }
  29  
  30  /**
  31   * Given a file object, create a URL to a matching icon.
  32   *
  33   * @param $file
  34   *   A file object.
  35   * @param $theme
  36   *   Optional. The theme to be used for the icon. Defaults to the value of
  37   *   the "filefield_icon_theme" variable.
  38   * @return
  39   *   A URL string to the icon, or FALSE if an appropriate icon could not be
  40   *   found.
  41   */
  42  function _filefield_icon_url($file, $theme = NULL) {
  43    global $base_url;
  44  
  45    if ($icon_path = _filefield_icon_path($file, $theme)) {
  46      return $base_url .'/'. $icon_path;
  47    }
  48    return FALSE;
  49  }
  50  
  51  /**
  52   * Given a file object, create a URL to a matching icon.
  53   *
  54   * @param $file
  55   *   A file object.
  56   * @param $theme
  57   *   Optional. The theme to be used for the icon. Defaults to the value of
  58   *   the "filefield_icon_theme" variable.
  59   * @return
  60   *   A string to the icon as a local path, or FALSE if an appropriate icon could
  61   *   not be found.
  62   */
  63  function _filefield_icon_path($file, $theme = NULL) {
  64    if (!isset($theme)) {
  65      $theme = variable_get('filefield_icon_theme', 'default');
  66    }
  67  
  68    // If there's an icon matching the exact mimetype, go for it.
  69    $dashed_mime = strtr($file['filemime'], array('/' => '-'));
  70    if ($icon_path = _filefield_create_icon_path($dashed_mime, $theme)) {
  71      return $icon_path;
  72    }
  73    // For a couple of mimetypes, we can "manually" tell a generic icon.
  74    if ($generic_name = _filefield_generic_icon_map($file)) {
  75      if ($icon_path = _filefield_create_icon_path($generic_name, $theme)) {
  76        return $icon_path;
  77      }
  78    }
  79    // Use generic icons for each category that provides such icons.
  80    foreach (array('audio', 'image', 'text', 'video') as $category) {
  81      if (strpos($file['filemime'], $category .'/') === 0) {
  82        if ($icon_path = _filefield_create_icon_path($category .'-x-generic', $theme)) {
  83          return $icon_path;
  84        }
  85      }
  86    }
  87    // Try application-octet-stream as last fallback.
  88    if ($icon_path = _filefield_create_icon_path('application-octet-stream', $theme)) {
  89      return $icon_path;
  90    }
  91    // Sorry, no icon can be found...
  92    return FALSE;
  93  }
  94  
  95  /**
  96   * Internal function to convert a file icon theme name to a directory.
  97   */
  98  function _filefield_icon_directory($theme = NULL) {
  99    static $sets;
 100  
 101    if (!isset($sets)) {
 102      $sets = module_invoke_all('filefield_icon_sets');
 103      drupal_alter('filefield_icon_sets', $sets);
 104    }
 105  
 106    if (!isset($theme) || !isset($sets[$theme])) {
 107      $theme = 'default';
 108    }
 109  
 110    return $sets[$theme];
 111  }
 112  
 113  function _filefield_create_icon_path($icon_name, $theme = NULL) {
 114    $icons_directory = _filefield_icon_directory($theme);
 115    $icon_path = $icons_directory .'/'. $icon_name .'.png';
 116  
 117    if (file_exists($icon_path)) {
 118      return $icon_path;
 119    }
 120    return FALSE;
 121  }
 122  
 123  function _filefield_generic_icon_map($file) {
 124    switch ($file['filemime']) {
 125      // Word document types.
 126      case 'application/msword':
 127      case 'application/vnd.ms-word.document.macroEnabled.12':
 128      case 'application/vnd.oasis.opendocument.text':
 129      case 'application/vnd.oasis.opendocument.text-template':
 130      case 'application/vnd.oasis.opendocument.text-master':
 131      case 'application/vnd.oasis.opendocument.text-web':
 132      case 'application/vnd.openxmlformats-officedocument.wordprocessingml.document':
 133      case 'application/vnd.stardivision.writer':
 134      case 'application/vnd.sun.xml.writer':
 135      case 'application/vnd.sun.xml.writer.template':
 136      case 'application/vnd.sun.xml.writer.global':
 137      case 'application/vnd.wordperfect':
 138      case 'application/x-abiword':
 139      case 'application/x-applix-word':
 140      case 'application/x-kword':
 141      case 'application/x-kword-crypt':
 142        return 'x-office-document';
 143  
 144      // Spreadsheet document types.
 145      case 'application/vnd.ms-excel':
 146      case 'application/vnd.ms-excel.sheet.macroEnabled.12':
 147      case 'application/vnd.oasis.opendocument.spreadsheet':
 148      case 'application/vnd.oasis.opendocument.spreadsheet-template':
 149      case 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet':
 150      case 'application/vnd.stardivision.calc':
 151      case 'application/vnd.sun.xml.calc':
 152      case 'application/vnd.sun.xml.calc.template':
 153      case 'application/vnd.lotus-1-2-3':
 154      case 'application/x-applix-spreadsheet':
 155      case 'application/x-gnumeric':
 156      case 'application/x-kspread':
 157      case 'application/x-kspread-crypt':
 158        return 'x-office-spreadsheet';
 159  
 160      // Presentation document types.
 161      case 'application/vnd.ms-powerpoint':
 162      case 'application/vnd.ms-powerpoint.presentation.macroEnabled.12':
 163      case 'application/vnd.oasis.opendocument.presentation':
 164      case 'application/vnd.oasis.opendocument.presentation-template':
 165      case 'application/vnd.openxmlformats-officedocument.presentationml.presentation':
 166      case 'application/vnd.openxmlformats-officedocument.presentationml.slideshow':
 167      case 'application/vnd.stardivision.impress':
 168      case 'application/vnd.sun.xml.impress':
 169      case 'application/vnd.sun.xml.impress.template':
 170      case 'application/x-kpresenter':
 171        return 'x-office-presentation';
 172  
 173      // Compressed archive types.
 174      case 'application/zip':
 175      case 'application/x-zip':
 176      case 'application/stuffit':
 177      case 'application/x-stuffit':
 178      case 'application/x-7z-compressed':
 179      case 'application/x-ace':
 180      case 'application/x-arj':
 181      case 'application/x-bzip':
 182      case 'application/x-bzip-compressed-tar':
 183      case 'application/x-compress':
 184      case 'application/x-compressed-tar':
 185      case 'application/x-cpio-compressed':
 186      case 'application/x-deb':
 187      case 'application/x-gzip':
 188      case 'application/x-java-archive':
 189      case 'application/x-lha':
 190      case 'application/x-lhz':
 191      case 'application/x-lzop':
 192      case 'application/x-rar':
 193      case 'application/x-rpm':
 194      case 'application/x-tzo':
 195      case 'application/x-tar':
 196      case 'application/x-tarz':
 197      case 'application/x-tgz':
 198        return 'package-x-generic';
 199  
 200      // Script file types.
 201      case 'application/ecmascript':
 202      case 'application/javascript':
 203      case 'application/mathematica':
 204      case 'application/vnd.mozilla.xul+xml':
 205      case 'application/x-asp':
 206      case 'application/x-awk':
 207      case 'application/x-cgi':
 208      case 'application/x-csh':
 209      case 'application/x-m4':
 210      case 'application/x-perl':
 211      case 'application/x-php':
 212      case 'application/x-ruby':
 213      case 'application/x-shellscript':
 214      case 'text/vnd.wap.wmlscript':
 215      case 'text/x-emacs-lisp':
 216      case 'text/x-haskell':
 217      case 'text/x-literate-haskell':
 218      case 'text/x-lua':
 219      case 'text/x-makefile':
 220      case 'text/x-matlab':
 221      case 'text/x-python':
 222      case 'text/x-sql':
 223      case 'text/x-tcl':
 224        return 'text-x-script';
 225  
 226      // HTML aliases.
 227      case 'application/xhtml+xml':
 228        return 'text-html';
 229  
 230      // RTF files.
 231      case 'application/rtf':
 232        return 'text-rtf';
 233  
 234      // Google earth files.
 235      case 'application/vnd.google-earth.kml+xml':
 236      case 'application/vnd.google-earth.kmz':
 237        return 'application-google-earth';
 238  
 239      // Executable types.
 240      case 'application/x-macbinary':
 241      case 'application/x-ms-dos-executable':
 242      case 'application/x-pef-executable':
 243        return 'application-x-executable';
 244  
 245      default:
 246        return FALSE;
 247    }
 248  }