include/class_ppdManager.inc

   1 <?php
   2
   3 class ppdManager
   4 {
   5         var $path= "";
   6         var $cachedList= array();
   7         var $timestamps = array();
   8
   9         function ppdManager($path)
  10         {
  11                 if(is_dir($path)){
  12                 $this->path= $path;
  13                 }else{
  14                         print_red(sprintf(_("PPD manager : The specified path '%s' doesn't exists."),$path));
  15                         return (false);
  16                 }
  17         }
  18
  19
  20         function findPPD($path)
  21         {
  22                 $list= array();
  23                 $currentDir= getcwd();
  24
  25                 $dh = opendir($path);
  26                 while(false !== ($file = readdir($dh))){
  27
  28                         /* Skip well known files */
  29                         if( $file == '.' || $file == '..'){
  30                                 continue;
  31                         }
  32
  33                         /* Recurse through all "common" directories */
  34                         if(is_dir($path.'/'.$file)){
  35                                 $list= array_merge($list, $this->findPPD($path.'/'.$file));
  36                                 continue;
  37                         }
  38
  39                         /* Check for PPD extension */
  40                         if (preg_match('/\.ppd$/i', $file)){
  41                                 $list[]= $path.'/'.$file;
  42                         }
  43                 }
  44
  45                 closedir($dh);
  46                 chdir ($currentDir);
  47                 return ($list);
  48         }
  49
  50
  51         function updateAttribute($file, $section, $attribute, $value)
  52         {
  53                 $fsection= false;
  54                 $fattribute= false;
  55                 $section= preg_replace('/^\*/', '', $section);
  56                 $attribute= preg_replace('/^\*/', '', $attribute);
  57
  58                 $rp= @fopen($file, "r");
  59                 $wp= @fopen("$file.tmp", "w");
  60
  61
  62
  63                 while (!feof($rp)){
  64                         $lines[]= fgets($rp, 1024);
  65                 }
  66
  67                 $ret = "";
  68                 $done =false;
  69                 foreach($lines as $nr => $line){
  70
  71                         if (preg_match("/\*OpenGroup:*\s+\**$section\/*/", $line)){
  72                 $fsection= true;
  73                                 $ret .=$line;
  74                 continue;
  75             }
  76
  77                         /* Change model name .. */
  78                         if ((preg_match("/^\*".$attribute.":*\s+/",$line)) && ($attribute == "ModelName")){
  79                                 $line= "*$attribute: \"$value\"\n";
  80                                 $done =true;
  81                         }
  82
  83                         if (($fsection) && ($section != "NO_SECTION")){
  84                                 if (preg_match("/^\*CloseGroup:*\s+\**$section\/*/", $line)){
  85                                         $fsection= false;
  86                                         $ret .=$line;
  87                                         continue;
  88                                 }
  89
  90
  91                                 if (preg_match("/^\*OpenUI:*\s+\**$attribute\/*/", $line)){
  92                                         $fattribute= true;
  93                                         $ret .= $line;
  94                                         continue;
  95                                 }
  96
  97                                 if ($fattribute){
  98                                         if (preg_match("/^\*CloseUI:*\s+\**$attribute\/*/", $line)){
  99                                                 $fattribute= false;
 100                                                 $ret .= $line;
 101                                                 continue;
 102                                         }
 103
 104                                         if (preg_match("/^\*Default$attribute:*\s+/", $line)){
 105                                                 $line= "*Default$attribute: $value\n";
 106                                                 $done =true;
 107                                         }
 108                                 }
 109                         }else{
 110                                 if (preg_match("/^\*OpenUI:*\s+\**$attribute\/*/", $line)){
 111                                         $fattribute= true;
 112                                         $ret .= $line;
 113                                         continue;
 114                                 }
 115
 116                                 if ($fattribute){
 117                                         if (preg_match("/^\*CloseUI:*\s+\**$attribute\/*/", $line)){
 118                                                 $fattribute= false;
 119                                                 $ret .= $line;
 120                                                 continue;
 121                                         }
 122
 123                                         if (preg_match("/^\*Default$attribute:*\s+/", $line)){
 124                                                 $line= "*Default$attribute: $value\n";
 125                                                 $done =true;
 126                                         }
 127                                 }
 128                         }
 129                         $ret .=$line;
 130                 }
 131
 132                 fwrite($wp,$ret);
 133
 134                 fclose($wp);
 135                 fclose($rp);
 136
 137                 copy("$file.tmp", "$file");
 138                 unlink("$file.tmp");
 139         }
 140
 141
 142         function saveProperties($ppdFile, $properties)
 143         {
 144                 if(!is_readable($ppdFile)){
 145                         print_red(sprintf(_("Specified ppd file '%s' can't be opened for reading."),$ppdFile));
 146                 }elseif(!is_writeable(preg_replace("#(^.*/).*$#","\\1",$ppdFile.".tmp"))){
 147                         print_red(sprintf(_("The required tmp file file '%s' can't be opened for writing."),$ppdFile.".tmp"));
 148                 }else{
 149                         foreach ($properties as $name => $section){
 150                                 foreach ($section as $attribute => $value){
 151                                         if (is_array($value)){
 152                                                 $this->updateAttribute($ppdFile, $name, $attribute, $value['_default']);
 153                                         }
 154                                 }
 155                         }
 156                 }
 157         }
 158
 159         function loadProperties($ppdFile)
 160         {
 161                 $group= "";
 162                 $option= "";
 163                 $properties= array();
 164
 165                 $fh= fopen ($ppdFile, 'r');
 166                 while (!feof($fh)) {
 167
 168                         /* Read line */
 169                         $line= fgets($fh, 256);
 170                         if (strlen($line) >= 256){
 171                                 trigger_error(_('Parsing PPD file %s failed - line too long. Trailing characters have been ignored'), E_USER_WARNING);
 172                         }
 173
 174                         /* Trigger for option groups */
 175                         if (preg_match('/^\*OpenGroup:/i', $line)){
 176
 177                                 /* Sanity checks */
 178                                 if ($group != ""){
 179                                         trigger_error(_('Nested groups are not supported!'), E_USER_WARNING);
 180                                         continue;
 181                                 }
 182                                 if (in_array($group, $properties)){
 183                                         trigger_error(_('Group name not unique!'), E_USER_WARNING);
 184                                         continue;
 185                                 }
 186
 187                                 // TODO: Symbol values are not supported yet!
 188                                 if (preg_match('/\^/', $line)){
 189                                         trigger_error(_('Symbol values are not supported yet!'), E_USER_WARNING);
 190                                 }
 191                                 $complete= preg_replace('@^\*OpenGroup:\s+(.*)$@i', '\1', $line);
 192                                 $complete= trim($complete, '"');
 193                                 if (preg_match('@/@', $complete)){
 194                                         $group= trim(preg_replace('@^\*OpenGroup:\s+"?([^/]+)/.*$@i', '\1', $line));
 195                                         $name = preg_replace('@^\*OpenGroup:\s+"?[^/]+/([^/]+).*$@i', '\1', $line);
 196                                 } else {
 197                                         $group= $complete;
 198                                         $name = $complete;
 199                                 }
 200                                 $properties[$group]= array('_name' => $name);
 201                                 continue;
 202                         }
 203                         if (preg_match("/^\*CloseGroup:\s+\"?$group\"?/i", $line)){
 204                                 $group= "";
 205                                 continue;
 206                         }
 207
 208                         /* Trigger for options */
 209                         if (preg_match('/^\*OpenUI\s+/i', $line)){
 210
 211                                 /* Sanity check */
 212                                 if ($option != ""){
 213                                         trigger_error(_('Nested options are not supported!'), E_USER_WARNING);
 214                                         continue;
 215                                 }
 216
 217                                 // TODO: Symbol values are not supported yet!
 218                                 if (preg_match('/\^/', $line)){
 219                                         trigger_error(_('Symbol values are not supported yet!'), E_USER_WARNING);
 220                                 }
 221                                 $complete= preg_replace('@^\*OpenUI\s+(.*)$@i', '\1', $line);
 222                                 $complete= trim($complete, '"');
 223                                 if (preg_match('@/@', $complete)){
 224                                         $option= trim(preg_replace('@^\*OpenUI\s+([^/]+)/.*$@i', '\1', $line));
 225                                         $name = trim(preg_replace('@^\*OpenUI\s+[^/]+/([^/]+).*$@i', '\1', $line));
 226                                 } else {
 227                                         $option= trim($complete);
 228                                         $name  = trim($complete);
 229                                 }
 230
 231                                 /* Extract option type */
 232                                 $type= trim(preg_replace('/^[^:]+:\s+/', '', $line));
 233                                 $name= preg_replace('/:.*$/', '', $name);
 234                                 $option= preg_replace('/:.*$/', '', $option);
 235
 236                                 // TODO: PickMany is not supported yet!
 237                                 if (preg_match('/PickMany/i', $type)){
 238                                         trigger_error(_('PickMany is not supported yet!'), E_USER_WARNING);
 239                                 }
 240                                 if(empty($group)){
 241                                         $properties["NO_SECTION"][$option]= array('_name' => $name, '_type' => $type);
 242                                 }else{
 243                                         $properties[$group][$option]= array('_name' => $name, '_type' => $type);
 244                                 }
 245                                 continue;
 246                         }
 247                         /* Show interest for option parsing */
 248                         if ($option != ""){
 249
 250                                 $eoption= preg_replace('@\*@', '', $option);
 251
 252                                 /* Close section? */
 253                                 if (preg_match("@^\*CloseUI:\s+\*$eoption@i", $line)){
 254                                         $option= "";
 255                                         continue;
 256                                 }
 257
 258                                 /* Default value? */
 259                                 if (preg_match("@^\*Default$eoption:@", $line)){
 260                                         $c= preg_replace("@^\*Default$eoption:\s+@", "", $line);
 261                                         if(empty($group)){
 262                                                 $properties["NO_SECTION"][$option]['_default']= trim(trim($c, '"'));
 263                                         }else{
 264                                                 $properties[$group][$option]['_default']= trim(trim($c, '"'));
 265                                         }
 266                                         continue;
 267                                 }
 268
 269                                 /* Possible value? */
 270                                 if (preg_match("@^\*$eoption\s+@", $line)){
 271 #*PageSize Letter/US Letter: "<>setpagedevice"
 272                                         $c= preg_replace("@^\*$eoption\s+([^/]+).*$@", "$1", $line);
 273                                         $d= preg_replace("@^\*$eoption\s+[^/]+/([^:]+).*$@", "$1", $line);
 274                                         if(empty($group)){
 275                                                 $properties["NO_SECTION"][$option][trim($c)]= trim($d);
 276                                         }else{
 277                                                 $properties[$group][$option][trim($c)]= trim($d);
 278                                         }
 279                                         continue;
 280                                 }
 281                         }
 282                 }
 283                 fclose ($fh);
 284                 return ($properties);
 285         }
 286
 287         function loadDescription($ppdFile)
 288         {
 289                 $model= "";
 290                 $manufacturer= "";
 291
 292
 293                 /* Only parse complete PPD file again, if it was changed */
 294                 $modified = filemtime($ppdFile);
 295                 if(isset($this->cachedList[$ppdFile]) && isset($this->timestamps[$ppdFile]) && $modified == $this->timestamps[$ppdFile]){
 296                         return($this->cachedList[$ppdFile]);
 297                 }
 298
 299                 /* Remember modified timestamp, to speed up next request */
 300                 $this->timestamps[$ppdFile] = filemtime($ppdFile);
 301
 302                 $fh= fopen ($ppdFile, 'r');
 303                 while ((!feof($fh))&&($fh)) {
 304
 305                         /* Read line */
 306                         $line= fgets($fh, 256);
 307                         if (strlen($line) >= 256){
 308                                 trigger_error(_('Parsing PPD file %s failed - line too long. Trailing characters have been ignored'), E_USER_WARNING);
 309                         }
 310
 311                         /* Extract interesting informations */
 312                         if (preg_match('/^\*Manufacturer:/i', $line)){
 313                                 $manufacturer= preg_replace('/^\*Manufacturer:\s+"?([^"]+)"?.*$/i', '\1', $line);
 314                         }
 315                         if (preg_match('/^\*ModelName:/i', $line)){
 316                                 $model= preg_replace('/^\*ModelName:\s+"?([^"]+)"?.*$/i', '\1', $line);
 317                         }
 318
 319                         /* Got everything we need? Skip rest for speed reasons... */
 320                         if ($model != '' && $manufacturer != ''){
 321                                 break;
 322                         }
 323                 }
 324                 fclose ($fh);
 325
 326                 /* Write out a notice that the PPD file seems to be broken if we can't
 327                    extract any usefull informations */
 328                 if ($model == '' || $manufacturer == ''){
 329                         trigger_error(sprintf(_('Parsing PPD file %s failed - no information found.'), $ppdFile), E_USER_WARNING);
 330                 }
 331
 332                 return ($manufacturer.' - '.$model);
 333         }
 334
 335
 336         function getPrinterList($reload= false)
 337         {
 338                 /* Load list of PPD files */
 339                 if (count($this->cachedList) == 0 || $reload){
 340                         $list= $this->findPPD($this->path);
 341
 342                         /* Load descriptive informations to build final printer list */
 343                         $new = array();
 344                         foreach ($list as $ppdFile){
 345                                 $new[$ppdFile] = $this->loadDescription($ppdFile);
 346                         }
 347                         $this->cachedList= $new ;
 348
 349                 }
 350
 351                 return ($this->cachedList);
 352         }
 353
 354 }
 355
 356 ?>