image/45/image.imagemagick.inc

<?php
// $Id: image.imagemagick.inc,v 1.1 2004/12/16 04:18:46 weitzman Exp $

/**
 * Return information about the imagemagick toolkit
 */
function image_imagemagick_info() {
  return array('name' => 'imagemagick', 'title' => 'ImageMagick Toolkit.');
  
}

/**
 * Validate and return toolkit specific settings
 */
function image_imagemagick_settings() {
  $convert_file = variable_get('image_imagemagick_convert', '/usr/bin/convert');

  if (!file_exists($convert_file)) {
    form_set_error('image_imagemagick_convert', t('%file does not exist or is not executable.', array('%file' => "<em>$convert_file</em>")));
  }
  
  return form_textfield(t('Location of the "convert" binary'), 'image_imagemagick_convert', $convert_file, 64, 64);
}

/**
 * Resize an image to the given width and height
 */
function image_imagemagick_resize($source, $dest, $width, $height) {
  $filter = ' -scale '. $width . 'x' . $height . ' -filter QUADRATIC';
  return _image_imagemagick_convert($source, $dest, $filter);
}

/**
 * Rotate an image
 */
function image_imagemagick_rotate($source, $dest, $degrees) {
  $filter = ' -rotate ' . escapeshellarg($degrees) . ' -background #000000';  
  return _image_imagemagick_convert($source, $dest, $filter);  
}

/**
 * Crop an image to the specified dimensions
 */
function image_imagemagick_crop($source, $dest, $x, $y, $width, $height) {
  $filter = ' -crop ' . $width . 'x' . $height . '+' . $x . '+' . $y;
  return _image_imagemagick_convert($source, $dest, $filter);  
}

/**
 * Helper function: Escape filename for Unix or Windows shell.
 *
 * @param $filename filename to escape -- may contain spaces or other problematic characters
 *
 * @return escaped version of $filename which should pass through shell
 */
function _image_escape_shell($filename) {
  if (strstr($_SERVER['SERVER_SOFTWARE'], 'Win32') || strstr($_SERVER['SERVER_SOFTWARE'], 'IIS')) {
    return '"' . addslashes($filename) . '"';
  } else {
    return escapeshellarg($filename);
  }
}

/**
 * Calls the convert executable with the specified filter
 */
function _image_imagemagick_convert($source, $dest, $filter) {
  $convert_path = variable_get('image_imagemagick_convert', '/usr/bin/convert');
  if (!file_exists($convert_path)) {
    return false;
  }
  
  $filter = preg_replace("/[^A-Za-z0-9\.\-\+\040]/", '', $filter);
  $source = _image_escape_shell($source);
  $dest = _image_escape_shell($dest);
  $err = exec("$convert_path $filter $source $dest");
  if ($err) {
    return false;
  }
  if (!file_exists(trim($dest, "'"))) {
    return false;
  }
  
  return true;
}
?>
1	<?php
2	// $Id: image.imagemagick.inc,v 1.1 2004/12/16 04:18:46 weitzman Exp $
3
4	/**
5	* Return information about the imagemagick toolkit
6	*/
7	function image_imagemagick_info() {
8	return array('name' => 'imagemagick', 'title' => 'ImageMagick Toolkit.');
9
10	}
11
12	/**
13	* Validate and return toolkit specific settings
14	*/
15	function image_imagemagick_settings() {
16	$convert_file = variable_get('image_imagemagick_convert', '/usr/bin/convert');
17
18	if (!file_exists($convert_file)) {
19	form_set_error('image_imagemagick_convert', t('%file does not exist or is not executable.', array('%file' => "<em>$convert_file</em>")));
20	}
21
22	return form_textfield(t('Location of the "convert" binary'), 'image_imagemagick_convert', $convert_file, 64, 64);
23	}
24
25	/**
26	* Resize an image to the given width and height
27	*/
28	function image_imagemagick_resize($source, $dest, $width, $height) {
29	$filter = ' -scale '. $width . 'x' . $height . ' -filter QUADRATIC';
30	return _image_imagemagick_convert($source, $dest, $filter);
31	}
32
33	/**
34	* Rotate an image
35	*/
36	function image_imagemagick_rotate($source, $dest, $degrees) {
37	$filter = ' -rotate ' . escapeshellarg($degrees) . ' -background #000000';
38	return _image_imagemagick_convert($source, $dest, $filter);
39	}
40
41	/**
42	* Crop an image to the specified dimensions
43	*/
44	function image_imagemagick_crop($source, $dest, $x, $y, $width, $height) {
45	$filter = ' -crop ' . $width . 'x' . $height . '+' . $x . '+' . $y;
46	return _image_imagemagick_convert($source, $dest, $filter);
47	}
48
49	/**
50	* Helper function: Escape filename for Unix or Windows shell.
51	*
52	* @param $filename filename to escape -- may contain spaces or other problematic characters
53	*
54	* @return escaped version of $filename which should pass through shell
55	*/
56	function _image_escape_shell($filename) {
57	if (strstr($_SERVER['SERVER_SOFTWARE'], 'Win32') \|\| strstr($_SERVER['SERVER_SOFTWARE'], 'IIS')) {
58	return '"' . addslashes($filename) . '"';
59	} else {
60	return escapeshellarg($filename);
61	}
62	}
63
64	/**
65	* Calls the convert executable with the specified filter
66	*/
67	function _image_imagemagick_convert($source, $dest, $filter) {
68	$convert_path = variable_get('image_imagemagick_convert', '/usr/bin/convert');
69	if (!file_exists($convert_path)) {
70	return false;
71	}
72
73	$filter = preg_replace("/[^A-Za-z0-9\.\-\+\040]/", '', $filter);
74	$source = _image_escape_shell($source);
75	$dest = _image_escape_shell($dest);
76	$err = exec("$convert_path $filter $source $dest");
77	if ($err) {
78	return false;
79	}
80	if (!file_exists(trim($dest, "'"))) {
81	return false;
82	}
83
84	return true;
85	}
86	?>