/*
* 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.router;
import juzu.io.UndeclaredIOException;
import juzu.impl.common.PercentCodec;
import java.io.IOException;
/** @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> */
class Path {
static Path parse(String path) throws UndeclaredIOException {
try {
Data data = new Data(path);
return new Path(data, 0);
}
catch (IOException e) {
throw new UndeclaredIOException(e);
}
}
private static final class Data {
/** . */
private final String value;
/** . */
private final boolean[] escaped;
private Data(String rawValue) throws IOException, IllegalArgumentException {
int len = rawValue.length();
StringBuilder buffer = new StringBuilder();
boolean[] escaped = new boolean[len];
int count = 0;
//
int i = 0;
while (i < len) {
int delta = PercentCodec.RFC3986_PATH.decodeChar(rawValue, i, len, buffer);
escaped[count++] = delta > 1;
i += delta;
}
//
this.value = buffer.toString();
this.escaped = escaped;
}
boolean isEscaped(int index) {
if (index < 0) {
throw new IndexOutOfBoundsException("No negative index accepted");
}
if (index >= value.length()) {
throw new IndexOutOfBoundsException("Index can't be greater than length");
}
return escaped[index];
}
}
/** . */
private final Data data;
/** . */
private final int offset;
/** . */
private final String value;
private Path(Data data, int offset) {
this.data = data;
this.offset = offset;
this.value = data.value.substring(offset);
}
String getValue() {
return value;
}
boolean isEscaped(int index) {
return data.isEscaped(innerIndex(index));
}
char charAt(int pos) {
return value.charAt(pos);
}
int length() {
return value.length();
}
int indexOf(int c, int index) {
return value.indexOf(c, index);
}
Path subPath(int index) {
if (index < 0) {
throw new IndexOutOfBoundsException("No negative index accepted");
}
else if (index == 0) {
return this;
}
else {
int i = offset + index;
if (i > data.value.length()) {
throw new IndexOutOfBoundsException("Index can't be greater than length");
}
return new Path(data, i);
}
}
/**
* Convert the specified index to the internal index.
*
* @param outterIndex the outter index
* @return the inner index value
* @throws IndexOutOfBoundsException if the outter index is not correct
*/
private int innerIndex(int outterIndex) throws IndexOutOfBoundsException {
if (outterIndex < 0) {
throw new IndexOutOfBoundsException("No negative index accepted");
}
int pos = offset + outterIndex;
if (pos > data.value.length()) {
throw new IndexOutOfBoundsException("Index can't be greater than length");
}
return pos;
}
@Override
public String toString() {
return "Path[" + value + "]";
}
}