TYPO3 Core

/**

* Compile the command for running ImageMagick/GraphicsMagick.

*

* @param string Command to be run

* @param string The parameters string

* @param string Override the default path

* @return string Compiled command that deals with IM6 & GraphicsMagick

*/

function imageMagickCommand($command, $parameters, $path='') {

$gfxConf = $GLOBALS['TYPO3_CONF_VARS']['GFX'];

$isExt = (TYPO3_OS=='WIN' ? '.exe' : '');

$switchCompositeParameters=false;

if(!$path) { $path = $gfxConf['im_path']; }

$im_version = $gfxConf['im_version_5'];

$combineScript = $gfxConf['im_combine_filename'] ? trim($gfxConf['im_combine_filename']) : 'combine';

if($command==='combine') { // This is only used internally, has no effect outside

$command = 'composite';

} elseif($command==='gm') { // Work-around for the install tool, trying to execute "gm gm"

$im_version = 'gm';

$command = 'identify';

} elseif($command==='__composite') { // One more work-around for the install tool, trying to find out if 'composite' exists

$command = 'composite';

$combineScript = 'composite';

}

// Compile the path & command

if($im_version==='gm') {

$switchCompositeParameters=true;

$path .= 'gm'.$isExt.' '.$command;

} else {

if($im_version==='im6') { $switchCompositeParameters=true; }

$path .= (($command=='composite') ? $combineScript : $command).$isExt;

}

$cmdLine = $path.' '.$parameters;

if($command=='composite' && $switchCompositeParameters) { // Because of some weird incompatibilities between ImageMagick 4 and 6 (plus GraphicsMagick), it is needed to change the parameters order under some preconditions

$paramsArr = t3lib_div::unQuoteFilenames($parameters);

if(count($paramsArr)==6) { // The mask image has been specified => swap the parameters

$tmp = $paramsArr[3];

$paramsArr[3] = $paramsArr[2];

$paramsArr[2] = $tmp;

}

$cmdLine = $path.' '.implode(' ', $paramsArr);

}

return $cmdLine;

}

/**

*

* Therefore the parameters need to be exploded, but they may be quoted (not in any case!)

*

* @param string The whole parameters string

* @return array Exploded parameters

*/

function unQuoteFilenames($parameters) {

$paramsArr = explode(' ', trim($parameters));

$quoteActive = -1; // Whenever a quoting character (") is found, $quoteActive is set to the element number inside of $params. A value of -1 means that there are not open quotes at the current position.

foreach($paramsArr as $k=>$v) {

if($quoteActive > -1) {

$paramsArr[$quoteActive] .= ' '.$v;

unset($paramsArr[$k]);

if(ereg('"$', $v)) { $quoteActive = -1; }

} elseif(!trim($v)) {

unset($paramsArr[$k]); // Remove empty elements

} elseif(ereg('^"', $v)) {

$quoteActive = $k;

}

}

return $paramsArr;

}