class BookReaderMeta {
+ // Fields from _meta.xml to add to response (if present)
+ var $metaFields = array(
+ 'title' => 'title',
+ 'author' => 'author',
+ 'publisher' => 'publisher',
+ 'date' => 'date',
+ 'language' => 'language',
+ 'contributor' => 'contributor',
+ 'collection' => 'collection',
+ 'page-progression' => 'pageProgression',
+ );
+
+ var $metaDefaults = array(
+ 'pageProgression' => 'lr',
+ );
+
// Builds metadata object (to be encoded as JSON)
function buildMetadata($id, $itemPath, $bookId, $server) {
$response = array();
- if (! $subPrefix) {
- $subPrefix = $id;
+ if (! $bookId) {
+ $bookId = $id;
}
- $subItemPath = $itemPath . '/' . $subPrefix;
+ $subItemPath = $itemPath . '/' . $bookId;
if ("" == $id) {
$this->BRFatal("No identifier specified!");
$this->BRfatal("File metadata not found!");
}
- $imageStackInfo = $this->findImageStack($subPrefix, $filesData);
+ $imageStackInfo = $this->findImageStack($bookId, $filesData);
if ($imageStackInfo['imageFormat'] == 'unknown') {
$this->BRfatal('Couldn\'t find image stack');
}
$scanDataFile = "${subItemPath}_scandata.xml";
$scanDataZip = "$itemPath/scandata.zip";
if (file_exists($scanDataFile)) {
+ $this->checkPrivs($scanDataFile);
$scanData = simplexml_load_file($scanDataFile);
} else if (file_exists($scanDataZip)) {
+ $this->checkPrivs($scanDataZip);
$cmd = 'unzip -p ' . escapeshellarg($scanDataZip) . ' scandata.xml';
exec($cmd, $output, $retval);
if ($retval != 0) {
}
# Load some values from meta.xml
- $pageProgression = 'lr'; // default
- if ('' != $metaData->{'page-progression'}) {
- $pageProgression = $metaData->{"page-progression"};
+ foreach ($this->metaFields as $srcName => $destName) {
+ if ($metaData->{$srcName}) {
+ $response[$destName] = $metaData->{$srcName} . '';
+ } else {
+ if (array_key_exists($destName, $this->metaDefaults)) {
+ $response[$destName] = $this->metaDefaults[$destName];
+ }
+ }
}
// General metadata
- $response['title'] = $metaData->title . ''; // XXX renamed
- $response['numPages'] = count($pageNums); // XXX renamed
+ $response['numPages'] = count($pageNums); // $$$ renamed
if ('' != $titleLeaf) {
- $response['titleLeaf'] = $titleLeaf; // XXX change to titleIndex - do leaf mapping here
+ $response['titleLeaf'] = $titleLeaf; // $$$ change to titleIndex - do leaf mapping here
$titleIndex = $this->indexForLeaf($titleLeaf, $leafNums);
if ($titleIndex !== NULL) {
$response['titleIndex'] = intval($titleIndex);
}
}
$response['url'] = "http://www.archive.org/details/$id";
- $response['pageProgression'] = $pageProgression . '';
$response['pageWidths'] = $pageWidths;
$response['pageHeights'] = $pageHeights;
$response['pageNums'] = $pageNums;
// Internet Archive specific
- $response['itemId'] = $id; // XXX renamed
- $response['bookId'] = $subPrefix; // XXX renamed
+ $response['itemId'] = $id; // $$$ renamed
+ $response['bookId'] = $bookId; // $$$ renamed
+ $response['itemPath'] = $itemPath;
$response['zip'] = $imageStackFile;
$response['server'] = $server;
$response['imageFormat'] = $imageFormat;
$response['archiveFormat'] = $archiveFormat;
$response['leafNums'] = $leafNums;
+ $response['previewImage'] = $this->previewURL('preview', $response);
// URL to title image
if ('' != $titleLeaf) {
- $response['titleImage'] = $this->imageURL($titleLeaf, $response);
+ $response['titleImage'] = $this->previewURL('title', $response);
}
if (count($coverLeafs) > 0) {
$coverImages = array();
foreach ($coverLeafs as $key => $leafNum) {
array_push($coverIndices, $this->indexForLeaf($leafNum, $leafNums));
+ // $$$ TODO use preview API once it supports multiple covers
array_push($coverImages, $this->imageUrl($leafNum, $response));
}
$response['coverIndices'] = $coverIndices;
$response['coverImages'] = $coverImages;
}
-
- // Determine "preview" image, which may be the cover, title, or first page
- if (array_key_exists('titleImage', $response)) {
- // Use title image if was assert
- $previewImage = $response['titleImage'];
- } else if (array_key_exists('coverImages', $response)) {
- // Try for the cover page
- $previewImage = $response['coverImages'][0];
- } else {
- // Neither title nor cover asserted, use first page
- $previewImage = $this->imageURL(0, $response);
- }
- $response['previewImage'] = $previewImage;
-
+
return $response;
}
function BRFatal($string) {
// $$$ TODO log error
- echo "alert('$string');\n";
- die(-1);
+ throw new Exception("Metadata error: $string");
+ //echo "alert('$string');\n";
+ //die(-1);
}
// Returns true if a page should be added based on it's information in
}
}
- function imageURL($leafNum, $metadata, $scale, $rotate) {
+ function leafForIndex($index, $leafNums) {
+ return $leafNums[$index]; // $$$ todo change to instance variables
+ }
+
+ function imageURL($leafNum, $metadata, $scale = null, $rotate = null) {
// "Under the hood", non-public, dynamically changing (achtung!) image URLs currently look like:
// http://{server}/BookReader/BookReaderImages.php?zip={zipPath}&file={filePath}&scale={scale}&rotate={rotate}
// e.g. http://ia311213.us.archive.org/BookReader/BookReaderImages.php?zip=/0/items/coloritsapplicat00andriala/coloritsapplicat00andriala_jp2.zip&file=coloritsapplicat00andriala_jp2/coloritsapplicat00andriala_0009.jp2&scale=8&rotate=0
$filePath = $this->imageFilePath($leafNum, $metadata['bookId'], $metadata['imageFormat']);
$url = 'http://' . $metadata['server'] . '/BookReader/BookReaderImages.php?zip=' . $metadata['zip'] . '&file=' . $filePath;
- if (defined($scale)) {
+ if ($scale !== null) {
$url .= '&scale=' . $scale;
}
- if (defined($rotate)) {
+ if ($rotate !== null) {
$url .= '&rotate=' . $rotate;
}
return $url;
}
+ // $$$ move inside BookReaderPreview
+ function previewURL($page, $metadata) {
+ $query = array(
+ 'id' => $metadata['itemId'],
+ 'bookId' => $metadata['bookId'],
+ 'itemPath' => $metadata['itemPath'],
+ 'server' => $metadata['server'],
+ 'page' => $page,
+ );
+
+ return 'http://' . $metadata['server'] . '/BookReader/BookReaderPreview.php?' . http_build_query($query, '', '&');
+ }
+
function imageFilePath($leafNum, $bookId, $format) {
return sprintf("%s_%s/%s_%04d.%s", $bookId, $format, $bookId, intval($leafNum), $format);
}
+ // Parse date from _meta.xml to integer
+ function parseYear($dateFromMetaXML) {
+ // grab the first run of digits
+ if (preg_match('|(\d+)|', $dateFromMetaXML, $matches)) {
+ return (int)$matches[1];
+ }
+ return null;
+ }
+
function processRequest($requestEnv) {
- $id = $requestEnv['itemId']; // XXX renamed
+ $id = $requestEnv['itemId']; // $$$ renamed
$itemPath = $requestEnv['itemPath'];
- $bookId = $requestEnv['bookId']; // XXX renamed
+ $bookId = $requestEnv['bookId']; // $$$ renamed
$server = $requestEnv['server'];
// Check if we're on a dev vhost and point to JSIA in the user's public_html on the datanode
$this->emitResponse( $this->buildMetadata($id, $itemPath, $bookId, $server) );
}
+
+ function checkPrivs($filename) {
+ if (!is_readable($filename)) {
+ header('HTTP/1.1 403 Forbidden');
+ exit(0);
+ }
+ }
+
}
?>
projects / bookreader.git / blobdiff