org.apache.jackrabbit.webdav.header.CodedUrlHeader Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.jackrabbit.webdav.header;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.http.HttpServletRequest;
/**
* CodedUrlHeader...
*/
public class CodedUrlHeader implements Header {
private static Logger log = LoggerFactory.getLogger(CodedUrlHeader.class);
private final String headerName;
private final String headerValue;
public CodedUrlHeader(String headerName, String headerValue) {
this.headerName = headerName;
if (headerValue != null && !(headerValue.startsWith("<") && headerValue.endsWith(">"))) {
headerValue = "<" + headerValue + ">";
}
this.headerValue = headerValue;
}
/**
* Return the name of the header
*
* @return header name
* @see Header#getHeaderName()
*/
public String getHeaderName() {
return headerName;
}
/**
* Return the value of the header
*
* @return value
* @see Header#getHeaderValue()
*/
public String getHeaderValue() {
return headerValue;
}
/**
* Returns the token present in the header value or null.
* If the header contained multiple tokens separated by ',' the first value
* is returned.
*
* @return token present in the CodedURL header or null if
* the header is not present.
* @see #getCodedUrls()
*/
public String getCodedUrl() {
String[] codedUrls = getCodedUrls();
return (codedUrls != null) ? codedUrls[0] : null;
}
/**
* Return an array of coded urls as present in the header value or null if
* no value is present.
*
* @return array of coded urls
*/
public String[] getCodedUrls() {
String[] codedUrls = null;
if (headerValue != null) {
String[] values = headerValue.split(",");
codedUrls = new String[values.length];
for (int i = 0; i < values.length; i++) {
int p1 = values[i].indexOf('<');
if (p1<0) {
throw new IllegalArgumentException("Invalid CodedURL header value:" + values[i]);
}
int p2 = values[i].indexOf('>', p1);
if (p2<0) {
throw new IllegalArgumentException("Invalid CodedURL header value:" + values[i]);
}
codedUrls[i] = values[i].substring(p1+1, p2);
}
}
return codedUrls;
}
/**
* Retrieves the header with the given name and builds a new CodedUrlHeader.
*
* @param request
* @param headerName
* @return new CodedUrlHeader instance
*/
public static CodedUrlHeader parse(HttpServletRequest request, String headerName) {
String headerValue = request.getHeader(headerName);
return new CodedUrlHeader(headerName, headerValue);
}
}