PhilSager/size_image.php

## size_image.php
<?php

	/**
	  * Script to get scaled image URL from CONTENTdm reference URL
	  * Phil Sager <psager@ohiohistory.org>.
	  *
	*/

	$CDM_WEBSERVICES_HOME = "https://somedomain.contentdm.oclc.org"; // web services
	$CONTENTDM_HOME = "http://somedomain.somewhere.org"; // public-facing CONTENTdm domain
	$img_size = 400; // default size if none specified
	$max_length = 4; // total number of characters allowed for the pixel size value, e.g. 4 digits, which will accommodate up to 9999

	// function to send curls to CONTENTdm web service
	function do_curl($curl_url) {
		$ch = curl_init();
	  curl_setopt($ch, CURLOPT_URL, $curl_url);
	  curl_setopt($ch, CURLOPT_HEADER, 0);
	  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
		if (!strpos($curl_url, 'xml')) {
    	$cdm_data_json = curl_exec($ch);
	  } else {
	    $cdm_data_xml = curl_exec($ch);
	    $xml = simplexml_load_string($cdm_data_xml);
	    $cdm_data_json = json_encode($xml);
	  }
	  curl_close($ch);
	  return json_decode($cdm_data_json, true);
	}

	if ( isset($_POST['link']) ) {

		// make sure the posted link is a valid CONTENTdm reference URL
		$pattern = "@".$CONTENTDM_HOME."\/cdm\/ref\/collection\/[A-Za-z0-9\/]{0,30}@";
		if (!preg_match($pattern, $_POST['link'])) { exit; }

	 	// get image size but only up to max length
		if ( isset($_POST['imagesize']) && is_numeric($_POST['imagesize']) ) {
			$img_size = substr($_POST['imagesize'],0,$max_length);
		}

		// get collection alias and image id
		$CDM_link_arr = explode(",", preg_replace('/^.*collection\/(.*?)\/id\/(.*)$/','$1,$2',$_POST['link']));

		// curl to get dimensions and scale to present image in crop window
	  $curl_url = $CDM_WEBSERVICES_HOME."/dmwebservices/index.php?q=dmGetImageInfo/".$CDM_link_arr[0]."/".$CDM_link_arr[1]."/xml";
	  $image_info = do_curl($curl_url);

	  // get width and scale info
	  $imgwidth = $image_info['width'];
	  $imgheight = $image_info['height'];
	  $longest_side = $imgwidth > $imgheight ? $imgwidth : $imgheight;
	  $trimmed_scale = "20";
	  //$scale = round(($img_size/$longest_side), 2);
	  $scale = $img_size/$longest_side;
	  $targ_w = $imgwidth*$scale;
	  $targ_h = $imgheight*$scale;
	  $formatted_scale = sprintf("%01.2f", $scale);
	  $trimmed_scale = substr($formatted_scale, 2);
	  if ($imgwidth < $img_size) { $trimmed_scale = 100; }

	  $scaled_link = $CONTENTDM_HOME.'/utils/ajaxhelper/?CISOROOT='.$CDM_link_arr[0].'&CISOPTR='.$CDM_link_arr[1].'&action=2&DMSCALE='.$trimmed_scale.'&DMWIDTH='.$targ_w.'&DMHEIGHT='.$targ_h;

	}

?>

<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/1999/rec-html401-19991224/loose.dtd">
<html>
  <head>
    <title>Get sized CDM image from reference URL</title>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
    <script type="text/javascript">
			function SelectAll(id) {
		    document.getElementById(id).focus();
		    document.getElementById(id).select();
			}
		</script>
		<style type="text/css">
			#scaleimage {
				border: 1px solid gray;
				padding: 10px;
				display:-moz-inline-stack;
				display:inline-block;
				zoom:1;
				*display:inline;
			}
			li {
				text-align: left;
			}
		</style>
  </head>
  <body>

		<div style="margin: 0 auto;text-align: center;">
	  	<form id="scaleimage" method="POST" action="<?php echo $_SERVER['PHP_SELF'] ?>">
				<p><b>Get a scaled image link from a CONTENTdm reference URL</b></p>
				<ul>
				<li>CDM Reference URL: <input type="text" name="link" size="30" value="<?php echo isset($_POST['link']) ? $_POST['link'] : '' ?>" /></li>
				<li>Fit image into <input type="text" name="imagesize" size="4" value="<?php echo isset($_POST['imagesize']) ? $_POST['imagesize'] : '' ?>" /> pixel box. <input type="submit"></li>
				</ul>
				<div style="padding: 10px">
					<?php
						if (isset($_POST['link'])) {
							echo 'Scaled image URL: <input id="cdmref" type="text" size="50" Value="'.$scaled_link.'" onClick="SelectAll(\'cdmref\');"">';
							echo '<br/><br/>';
							echo '<img src='.$scaled_link.'>';
						}
					?>
				</div>
			</form>
		</div>

  </body>
</html>
	<?php

	/**
	* Script to get scaled image URL from CONTENTdm reference URL
	* Phil Sager <psager@ohiohistory.org>.
	*
	*/

	$CDM_WEBSERVICES_HOME = "https://somedomain.contentdm.oclc.org"; // web services
	$CONTENTDM_HOME = "http://somedomain.somewhere.org"; // public-facing CONTENTdm domain
	$img_size = 400; // default size if none specified
	$max_length = 4; // total number of characters allowed for the pixel size value, e.g. 4 digits, which will accommodate up to 9999

	// function to send curls to CONTENTdm web service
	function do_curl($curl_url) {
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $curl_url);
	curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	if (!strpos($curl_url, 'xml')) {
	$cdm_data_json = curl_exec($ch);
	} else {
	$cdm_data_xml = curl_exec($ch);
	$xml = simplexml_load_string($cdm_data_xml);
	$cdm_data_json = json_encode($xml);
	}
	curl_close($ch);
	return json_decode($cdm_data_json, true);
	}

	if ( isset($_POST['link']) ) {

	// make sure the posted link is a valid CONTENTdm reference URL
	$pattern = "@".$CONTENTDM_HOME."\/cdm\/ref\/collection\/[A-Za-z0-9\/]{0,30}@";
	if (!preg_match($pattern, $_POST['link'])) { exit; }

	// get image size but only up to max length
	if ( isset($_POST['imagesize']) && is_numeric($_POST['imagesize']) ) {
	$img_size = substr($_POST['imagesize'],0,$max_length);
	}

	// get collection alias and image id
	$CDM_link_arr = explode(",", preg_replace('/^.collection\/(.?)\/id\/(.*)$/','$1,$2',$_POST['link']));

	// curl to get dimensions and scale to present image in crop window
	$curl_url = $CDM_WEBSERVICES_HOME."/dmwebservices/index.php?q=dmGetImageInfo/".$CDM_link_arr[0]."/".$CDM_link_arr[1]."/xml";
	$image_info = do_curl($curl_url);

	// get width and scale info
	$imgwidth = $image_info['width'];
	$imgheight = $image_info['height'];
	$longest_side = $imgwidth > $imgheight ? $imgwidth : $imgheight;
	$trimmed_scale = "20";
	//$scale = round(($img_size/$longest_side), 2);
	$scale = $img_size/$longest_side;
	$targ_w = $imgwidth*$scale;
	$targ_h = $imgheight*$scale;
	$formatted_scale = sprintf("%01.2f", $scale);
	$trimmed_scale = substr($formatted_scale, 2);
	if ($imgwidth < $img_size) { $trimmed_scale = 100; }

	$scaled_link = $CONTENTDM_HOME.'/utils/ajaxhelper/?CISOROOT='.$CDM_link_arr[0].'&CISOPTR='.$CDM_link_arr[1].'&action=2&DMSCALE='.$trimmed_scale.'&DMWIDTH='.$targ_w.'&DMHEIGHT='.$targ_h;

	}

	?>

	<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/1999/rec-html401-19991224/loose.dtd">
	<html>
	<head>
	<title>Get sized CDM image from reference URL</title>
	<meta http-equiv="content-type" content="text/html; charset=utf-8">
	<script type="text/javascript">
	function SelectAll(id) {
	document.getElementById(id).focus();
	document.getElementById(id).select();
	}
	</script>
	<style type="text/css">
	#scaleimage {
	border: 1px solid gray;
	padding: 10px;
	display:-moz-inline-stack;
	display:inline-block;
	zoom:1;
	*display:inline;
	}
	li {
	text-align: left;
	}
	</style>
	</head>
	<body>

	<div style="margin: 0 auto;text-align: center;">
	<form id="scaleimage" method="POST" action="<?php echo $_SERVER['PHP_SELF'] ?>">
	<p><b>Get a scaled image link from a CONTENTdm reference URL</b></p>
	<ul>
	<li>CDM Reference URL: <input type="text" name="link" size="30" value="<?php echo isset($_POST['link']) ? $_POST['link'] : '' ?>" /></li>
	<li>Fit image into <input type="text" name="imagesize" size="4" value="<?php echo isset($_POST['imagesize']) ? $_POST['imagesize'] : '' ?>" /> pixel box. <input type="submit"></li>
	</ul>
	<div style="padding: 10px">
	<?php
	if (isset($_POST['link'])) {
	echo 'Scaled image URL: <input id="cdmref" type="text" size="50" Value="'.$scaled_link.'" onClick="SelectAll(\'cdmref\');"">';
	echo '<br/><br/>';
	echo '<img src='.$scaled_link.'>';
	}
	?>
	</div>
	</form>
	</div>

	</body>
	</html>