org.archive.util.IAUtils Maven / Gradle / Ivy
/*
* This file is part of the Heritrix web crawler (crawler.archive.org).
*
* Licensed to the Internet Archive (IA) by one or more individual
* contributors.
*
* The IA licenses this file to You 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.
*/
package org.archive.util;
import java.io.BufferedReader;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.util.Properties;
/**
* Miscellaneous useful methods.
*
* @author gojomo & others
*/
public class IAUtils {
public final static Charset UTF8 = Charset.forName("utf-8");
final public static String COMMONS_VERSION = loadCommonsVersion();
final public static String PUBLISHER = loadCommons("publisher");
final public static String OPERATOR = loadCommons("operator");
final public static String WAT_WARCINFO_DESCRIPTION = loadCommons("wat.warcinfo.description");
final public static String WARC_FORMAT = loadCommons("warc.format");
final public static String WARC_FORMAT_CONFORMS_TO = loadCommons("warc.format.conforms.to");
public static String loadCommonsVersion() {
InputStream input = IAUtils.class.getResourceAsStream(
"/org/archive/ia-web-commons-version.txt");
if (input == null) {
return "UNKNOWN";
}
BufferedReader br = null;
String version;
try {
br = new BufferedReader(new InputStreamReader(input));
version = br.readLine();
br.readLine();
} catch (IOException e) {
return e.getMessage();
} finally {
closeQuietly(br);
}
return version.trim();
}
public static String loadCommons(String id) {
InputStream input = IAUtils.class.getResourceAsStream("/org/archive/commons.properties");
Reader reader = null;
if (input == null) {
return "UNKNOWN";
}
try {
reader = new InputStreamReader(input, "UTF-8");
} catch (UnsupportedEncodingException e) {
return "UNKNOWN";
}
Properties prop = new Properties();
try {
prop.load(reader);
} catch (IOException e1) {
return "UNKNOWN";
}
if (prop.getProperty(id) != null) {
return prop.getProperty(id);
} else {
return "UNKNOWN";
}
}
public static void closeQuietly(Object input) {
if(input == null || ! (input instanceof Closeable)) {
return;
}
try {
((Closeable)input).close();
} catch (IOException ioe) {
// ignore
}
}
}