/*
* Copyright 2002-2013 Drew Noakes
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* More information about this project is available at:
*
* http://drewnoakes.com/code/exif/
* http://code.google.com/p/metadata-extractor/
*/
package com.drew.tools;
import com.drew.imaging.ImageMetadataReader;
import com.drew.imaging.ImageProcessingException;
import com.drew.imaging.jpeg.JpegProcessingException;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.Tag;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
/**
* Utility that extracts metadata found at a given URL.
*
* @author Drew Noakes http://drewnoakes.com
*/
public class ProcessUrlUtility
{
public static void main(String[] args) throws IOException, JpegProcessingException
{
if (args.length == 0) {
System.err.println("Expects one or more URLs as arguments.");
System.exit(1);
}
for (String url : args)
processUrl(new URL(url));
System.out.println("Completed.");
}
private static void processUrl(URL url) throws IOException
{
URLConnection con = url.openConnection();
// con.setConnectTimeout(connectTimeout);
// con.setReadTimeout(readTimeout);
InputStream in = con.getInputStream();
// Read metadata
final Metadata metadata;
try {
metadata = ImageMetadataReader.readMetadata(in);
} catch (ImageProcessingException e) {
// this is an error in the Jpeg segment structure. we're looking for bad handling of
// metadata segments. in this case, we didn't even get a segment.
System.err.printf("%s: %s [Error Extracting Metadata]\n\t%s%n", e.getClass().getName(), url, e.getMessage()); return;
} catch (Throwable t) {
// general, uncaught exception during processing of jpeg segments
System.err.printf("%s: %s [Error Extracting Metadata]%n", t.getClass().getName(), url);
t.printStackTrace(System.err);
return;
}
if (metadata.hasErrors()) {
System.err.println(url);
for (Directory directory : metadata.getDirectories()) {
if (!directory.hasErrors())
continue;
for (String error : directory.getErrors()) {
System.err.printf("\t[%s] %s%n", directory.getName(), error);
}
}
}
// Iterate through all values
for (Directory directory : metadata.getDirectories()) {
for (Tag tag : directory.getTags()) {
String tagName = tag.getTagName();
String directoryName = directory.getName();
String description = tag.getDescription();
// truncate the description if it's too long
if (description != null && description.length() > 1024) {
description = description.substring(0, 1024) + "...";
}
System.out.printf("[%s] %s = %s%n", directoryName, tagName, description);
}
}
// if (processedCount > 0)
// System.out.println(String.format("Processed %,d files (%,d bytes) with %,d exceptions and %,d file errors in %s", processedCount, byteCount, exceptionCount, errorCount, path));
}
}