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<?php
/* $Id: PhDMediaManager.class.php 287304 2009-08-14 14:47:28Z rquadling $ */
/**
* Handles images (and other media objects) referenced in the docbook files.
* Copies over, returns proper filenames etc.
* Useful for xhtml output.
*
* @author Christian Weiske <cweiske@php.net>
*/
class PhDMediaManager
{
/**
* Directory where files are put
*
* @var string
*/
public $output_dir = null;
/**
* Path the media files are referenced relative to in html.
* Trailing slash required.
*
* @var string
*/
public $relative_ref_path = '';
/**
* Path the media files are referenced relative to in the xml file.
* This is nearly always the directory the xml file is located in.
*
* @var string
*/
public $relative_source_path = '';
/**
* If the image media directory exists
*
* @var boolean
*/
protected $media_dir_exists = false;
public function __construct($relative_source_path)
{
$this->relative_source_path = rtrim($relative_source_path, '/\\') . '/';
}//public function __construct(..)
/**
* Handles the file:
* - Generate proper filename (short version with only one directory)
* - Copy file over to this directory
* - Return filename relative to output directory
*
* @param string $filename File name relative to docbook document root
*
* @return string New file path that should be used in xhtml document
*/
public function handleFile($filename)
{
$basename = basename($filename);
$newname = md5(substr($filename, 0, -strlen($basename))) . '-' . $basename;
//FIXME: make images dynamic according to file type (e.g. video)
$newpath = 'images/' . $newname;
$this->copyOver($filename, $newpath);
return $this->relative_ref_path . $newpath;
}//public function handleFile(..)
/**
* Copies the file referenced with $filename into
* $output_dir/$newpath.
*
* @param string $filename Original filename
* @param string $newpath New path relative to output directory
*
* @return void
*/
protected function copyOver($filename, $newpath)
{
$fullpath = $this->output_dir . '/' . $newpath;
$fullfilename = $this->relative_source_path . $filename;
$altfullfilename = $this->relative_source_path . '../' . $filename;
if (file_exists($fullpath)) {
//no need to copy over again
return;
}
if (!file_exists($fullfilename)) {
if (!file_exists($altfullfilename)) {
trigger_error('Image does not exist: ' . $fullfilename, E_USER_WARNING);
return;
}
$fullfilename = $altfullfilename;
}
if (!$this->media_dir_exists) {
$dir = dirname($fullpath);
if (!file_exists($dir)) {
mkdir($dir, 0777, true);
}
$this->media_dir_exists = true;
}
copy($fullfilename, $fullpath);
}//protected function copyOver(..)
}//class PhDMediaManager
?>
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