#!/usr/local/php/bin/php -q
<?
    /*
     *  Reformat iPhoto HTML output into XML, supplementing with data from
     *  image Exif data.
     *
     *  Usage: iPhotoToXML.php folder
	 *
	 *	In order for this to work, please use the following settings when
	 *	exporting from iPhoto:
	 *
	 *		o Use enough rows or columns to get all the thumbnails on
	 *		  one page.
	 *
	 *		o Click show title on the thumbnail, but none of the others
     *
     *  This work is licensed under the Creative Commons Attribution-ShareAlike
     *  License. To view a copy of this license, visit
     *  http://creativecommons.org/licenses/by-sa/1.0/ or send a letter to
     *  Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305,
     *  USA.
     *
	 *	Afternoon <noon at aftnn.org>, 2003
     */

	if ($argc < 2) die("Usage: iPhotoToXML.php folder\n");

	$galleryRoot = $argv[1];
	if (substr($galleryRoot, -1) == "/") $galleryRoot = substr($galleryRoot, 0, -1);
	
	$galleryBase = explode("/", $galleryRoot);
	$galleryName = array_pop($galleryBase);
	$galleryBase = implode("/", $galleryBase);
	$outputName = strtolower($galleryName);
	
	// re-organise folders and ditch pre-generated HTML pages for each image
	if (is_dir("$galleryRoot/$galleryName-Thumbnails"))
		rename("$galleryRoot/$galleryName-Thumbnails", "$galleryRoot/thumbnails");
	if (is_dir("$galleryRoot/$galleryName-Images"))
		rename("$galleryRoot/$galleryName-Images", "$galleryRoot/images");
	if (is_dir("$galleryRoot/$galleryName-Pages"))
		system("rm -r '$galleryRoot/$galleryName-Pages'");
	
	// translate HTML to XML
	if (is_readable("$galleryRoot/$galleryName.html")) $index = implode("", file("$galleryRoot/$galleryName.html"));
	
	if ($index != "") {
		// get page title
		if (preg_match("{<title>\s+(.*?)\s+</title>}s", $index, $titleMatches))
			$pageTitle = $titleMatches[1];
		
		// get all thumnails and build XML
		$pictureCount = preg_match_all('{<img height="(\d+)" alt="(.*?)" width="(\d+)" src="' . $galleryName . '-Thumbnails/(.*?)\.jpg">}s', $index, $pictureMatches);
		
		if ($pictureCount) {
			print("Creating gallery.xml with $pictureCount pictures... ");
			$output = fopen("$galleryRoot/gallery.xml", "w");
			$preamble = '<?xml version="1.0" encoding="utf-8"?' . '>
<gallery>
	<title><![CDATA[' . $pageTitle . ']]></title>
	<pictureCount>' . $pictureCount . '</pictureCount>
	<thumbnailId>0</thumbnailId>
	<description><![CDATA[None]]></description>
';
			
			// loop through the thumbs and compile information about them and their larger relatives
			// draws width, height and timestamps from the Exif data of the large version
			$picData = "";
			for ($i = 0; $i < $pictureCount; $i++) {
				$exif = @read_exif_data("$galleryRoot/images/" . $pictureMatches[4][$i] . ".jpg");
				if (array_key_exists("DateTimeOriginal", $exif) and $exif["DateTimeOriginal"] != -1) $datetime = $exif["DateTimeOriginal"];
				else $datetime = $exif["DateTime"];
				$s = sscanf($datetime, "%d:%d:%d %d:%d:%d");
				$timestamp = mktime($s[3], $s[4], $s[5], $s[1], $s[2], $s[0]);
				
				if (array_key_exists("Width", $exif) and array_key_exists("Width", $exif)) {
					$width = $exif["Width"];
					$height = $exif["Height"];
				}
				else if (array_key_exists("Width", $exif["COMPUTED"]) and array_key_exists("Width", $exif["COMPUTED"])) {
					$width = $exif["COMPUTED"]["Width"];
					$height = $exif["COMPUTED"]["Height"];
				}
				else {
					$width = 1024;
					$height = 768;
				}
				$picData .= '	<picture>
		<id>' . $pictureMatches[4][$i] . '</id>
		<image>
			<width>' . $width . '</width>
			<height>' . $height . '</height>
		</image>
		<thumbnail>
			<width>' . $pictureMatches[3][$i] . '</width>
			<height>' . $pictureMatches[1][$i] . '</height>
		</thumbnail>
		<comment><![CDATA[' . $pictureMatches[2][$i] . ']]></comment>
		<date>' . $timestamp . '</date>
	</picture>
';
				if ($i == 0) $first = $timestamp;
				if ($i == $pictureCount - 1) $last = $timestamp;
			}
			
			$timeInfo = '	<firstTime>' . $first . '</firstTime>
	<lastTime>' . $last . '</lastTime>
';
			
			fputs($output, $preamble . $timeInfo . $picData . '</gallery>');
			fclose($output);
	
			// kill the old HTML index file
			if (is_writeable("$galleryRoot/$galleryName.html")) unlink("$galleryRoot/$galleryName.html");
		
			print("done\n");
		}
		else die("No pictures found in index file, $galleryRoot/$galleryName.html\n");
	}
	else die("$galleryRoot/$galleryName.html is empty\n");
?>