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converters can be set by setConverters()

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This commit is contained in:
Uwe Steinmann 2016-11-05 12:36:01 +01:00
parent c485c272f5
commit 5ee4253fe0
1 changed files with 34 additions and 2 deletions
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36
SeedDMS_Preview/Preview/Previewer.php
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@ -37,6 +37,13 @@ class SeedDMS_Preview_Previewer {
*/
protected $width;
/**
* @var array $converters list of mimetypes and commands for converting
* file into preview image
* @access protected
*/
protected $converters;
/**
* @var integer $timeout maximum time for execution of external commands
* @access protected
@ -54,6 +61,17 @@ class SeedDMS_Preview_Previewer {
$this->previewDir = $previewDir;
}
$this->width = intval($width);
$this->converters = array(
'image/png' => "convert -resize %wx '%f' '%o'",
'image/gif' => "convert -resize %wx '%f' '%o'",
'image/jpg' => "convert -resize %wx '%f' '%o'",
'image/jpeg' => "convert -resize %wx '%f' '%o'",
'image/svg+xml' => "convert -resize %wx '%f' '%o'",
'text/plain' => "convert -resize %wx '%f' '%o'",
'application/pdf' => "convert -density 100 -resize %wx '%f[0]' '%o'",
'application/postscript' => "convert -density 100 -resize %wx '%f[0]' '%o'",
'application/x-compressed-tar' => "tar tzvf '%f' | convert -density 100 -resize %wx text:-[0] '%o",
);
$this->timeout = intval($timeout);
}
@ -65,7 +83,7 @@ class SeedDMS_Preview_Previewer {
);
$pipes = array();
$timeout += time();
$timeout += time();
$process = proc_open($cmd, $descriptorspec, $pipes);
if (!is_resource($process)) {
throw new Exception("proc_open failed on: " . $cmd);
@ -93,6 +111,16 @@ class SeedDMS_Preview_Previewer {
}
} /* }}} */
/**
* Set a list of converters
*
* @param array list of converters. The key of the array contains the mimetype
* and the value is the command to be called for creating the preview
*/
function setConverters($arr) { /* {{{ */
$this->converters = array_merge($arr, $this->converters);
} /* }}} */
/**
* Return the physical filename of the preview image on disk
*
@ -154,6 +182,10 @@ class SeedDMS_Preview_Previewer {
$target = $this->previewDir.$dir.md5($infile).'-'.$width;
if($target != '' && (!file_exists($target.'.png') || filectime($target.'.png') < filectime($infile))) {
$cmd = '';
if(isset($this->converters[$mimetype])) {
$cmd = str_replace(array('%w', '%f', '%o'), array($width, $infile, $target.'.png'), $this->converters[$mimetype]);
}
/*
switch($mimetype) {
case "image/png":
case "image/gif":
@ -173,6 +205,7 @@ class SeedDMS_Preview_Previewer {
$cmd = 'tar tzvf '.$infile.' | convert -density 100 -resize '.$width.'x text:-[0] '.$target.'.png';
break;
}
*/
if($cmd) {
//exec($cmd);
try {
@ -211,7 +244,6 @@ class SeedDMS_Preview_Previewer {
$file = $document->_dms->contentDir.$object->getPath();
$target = $this->getFileName($object, $width);
return $this->createRawPreview($file, $document->getDir(), $object->getMimeType(), $width, $target);
} /* }}} */
/**