juzu.impl.common.FormURLEncodedParser Maven / Gradle / Ivy
/*
* Copyright 2013 eXo Platform SAS
*
* 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.
*/
package juzu.impl.common;
import java.io.ByteArrayOutputStream;
import java.nio.charset.Charset;
/**
* Basic implementation that needs improvements (make configurable and reuse PercentCodec to use any encoding)
*
* @author Julien Viet
*/
public class FormURLEncodedParser extends AbstractParameterParser {
/** . */
private final Charset encoding;
public FormURLEncodedParser(Charset encoding, CharSequence s, int from, int to) {
super(s, from, to);
//
this.encoding = encoding;
}
@Override
protected String safeDecodeName(String s) {
return safeDecodeValue(s);
}
@Override
protected String safeDecodeValue(String s) {
int len = s.length();
ByteArrayOutputStream baos = new ByteArrayOutputStream(20);
StringBuilder sb = new StringBuilder();
int i = 0;
while (i < len) {
char c = s.charAt(i);
if (c == '%') {
if (i + 2 < len) {
int i1 = PercentCodec.hex(s.charAt(i + 1));
int i2 = PercentCodec.hex(s.charAt(i + 2));
int b = i1 * 0x10 + i2;
baos.write(b);
i += 3;
} else {
return null;
}
} else {
// change + character to recover space character
if(c == '+'){
c = ' ';
}
if (baos.size() > 0) {
sb.append(new String(baos.toByteArray(), encoding));
baos.reset();
}
sb.append(c);
i++;
}
}
if (baos.size() > 0) {
sb.append(new String(baos.toByteArray(), encoding));
baos.reset();
}
return sb.toString();
}
}