|
//
// Copyright 2004-2005 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// 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.
//
/**
* URI Holder. This class assists with the decoding and encoding or HTTP URI's.
* It differs from the java.net.URL class as it does not provide communications
* ability, but it does assist with query string formatting.
* <P>
* UTF-8 encoding is used by default for % encoded characters. This may be
* overridden with the org.mortbay.util.URI.charset system property.
*
* @see UrlEncoded
* @author Greg Wilkins (gregw)
*/
public class Utils {
/* ------------------------------------------------------------ */
/**
* Encode a URI path.
*
* @param path
* The path the encode
* @param buf
* StringBuffer to encode path into (or null)
* @return The StringBuffer or null if no substitutions required.
*/
public static StringBuffer encodePath(StringBuffer buf, String path) {
if (buf == null) {
loop: for (int i = 0; i < path.length(); i++) {
char c = path.charAt(i);
switch (c) {
case '%':
case '?':
case ';':
case '#':
case ' ':
buf = new StringBuffer(path.length() << 1);
break loop;
}
}
if (buf == null)
return null;
}
synchronized (buf) {
for (int i = 0; i < path.length(); i++) {
char c = path.charAt(i);
switch (c) {
case '%':
buf.append("%25");
continue;
case '?':
buf.append("%3F");
continue;
case ';':
buf.append("%3B");
continue;
case '#':
buf.append("%23");
continue;
case ' ':
buf.append("%20");
continue;
default:
buf.append(c);
continue;
}
}
}
return buf;
}
}
|