public BufferedImage getImage(final Rendition rendition, final Dimension dim) throws IOException {
final Asset asset = rendition.getAsset();
final byte[] picture = (byte[]) extractMetadata(asset).getProperty(META_KEY_THUMBNAIL);
// if we have an embedded image
if (picture != null) {
return new Layer(new ByteArrayInputStream(picture), dim).getImage();
}
// according to the spec, a thumbnail representation of a document should be generated by
// default when the
// file is saved.
log.warn("Failed to retrieve thumbnail for {}", asset.getPath());
return null;
}
public ExtractedMetadata extractMetadata(final Asset asset) {
final ZipInputStream zis =
new ZipInputStream(new BufferedInputStream(asset.getOriginal().getStream()));
final ExtractedMetadata metadata = new ExtractedMetadata();
try {
readEntries(zis, metadata, asset);
} catch (Exception e) {
log.warn("Failed to extract metadata for {} reason: {}", asset.getPath(), e.getMessage());
log.debug("Stack Trace: ", e);
} finally {
IOUtils.closeQuietly(zis);
}
setMimetype(metadata, asset);
return metadata;
}
public ExtractedMetadata extractMetadata(final Asset asset) {
ExtractedMetadata metadata = new ExtractedMetadata();
log.debug("extractMetadata: start extracting asset [{}]", asset.getPath());
// extract metadata
final InputStream is = asset.getOriginal().getStream();
final ZipInputStream zis = new ZipInputStream(is);
final StringBuffer buffer = new StringBuffer();
int count = 0;
try {
ZipEntry entry;
while ((entry = zis.getNextEntry()) != null) {
if (!entry.isDirectory()) {
buffer.append(entry.getName()).append('\n');
count++;
}
zis.closeEntry();
}
metadata.setMetaDataProperty("Content", buffer.toString());
metadata.setMetaDataProperty("File Count", count);
} catch (IOException e) {
log.warn("extractMetadata: error while reading ZIP archive [{}]: ", asset.getPath(), e);
} catch (IllegalArgumentException iae) {
// bug#28534
log.warn("extractMetadata: error while reading ZIP entry [{}]: ", asset.getPath(), iae);
} finally {
IOUtils.closeQuietly(zis);
}
// Get XMP
execGenericProcessor(asset.getOriginal().getStream(), metadata);
setMimetype(metadata, asset);
return metadata;
}
