/**
* Copyright (c) 2013-2014 Santiago M. Mola <santi@mola.io>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package io.mola.galimatias.canonicalize;
import io.mola.galimatias.GalimatiasParseException;
import io.mola.galimatias.URL;
import io.mola.galimatias.URLUtils;
public class DecodeUnreservedCanonicalizer implements URLCanonicalizer {
@Override
public URL canonicalize(final URL input) throws GalimatiasParseException {
if (input == null) {
return input;
}
URL output = input;
if (output.isHierarchical()) {
output = output
.withUsername(decodeUnreserved(output.username()))
.withPassword(decodeUnreserved(output.password()))
.withPath(decodeUnreserved(output.path()));
}
return output
.withQuery(decodeUnreserved(output.query()))
.withFragment(decodeUnreserved(output.fragment()));
}
private String decodeUnreserved(final String input) {
if (input == null || input.isEmpty()) {
return input;
}
final StringBuilder output = new StringBuilder();
for (int i = 0; i < input.length(); i++) {
final char c = input.charAt(i);
if (c == '%' && input.length() > i + 2 &&
URLUtils.isASCIIHexDigit(input.charAt(i + 1)) &&
URLUtils.isASCIIHexDigit(input.charAt(i + 2))) {
final int d = URLUtils.hexToInt(input.charAt(i + 1), input.charAt(i + 2));
if (URLUtils.isASCIIAlphanumeric(d) || d == 0x2D || d == 0x2E || d == 0x5F || d == 0x7E) {
output.appendCodePoint(d);
} else {
output.append(input.substring(i, i + 3));
}
i += 2;
} else {
output.append(c);
}
}
return output.toString();
}
}