org.waveprotocol.wave.examples.client.webclient.util.URLEncoderDecoderBasedPercentEncoderDecoder.java Source code

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Here is the source code for org.waveprotocol.wave.examples.client.webclient.util.URLEncoderDecoderBasedPercentEncoderDecoder.java

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/**
 * Copyright 2009 Google Inc.
 *
 * 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 org.waveprotocol.wave.examples.client.webclient.util;

import org.waveprotocol.wave.model.id.URIEncoderDecoder;
import com.google.gwt.http.client.URL;

/**
 * Uses standard java URLEncoder and URLDecoder to percent encode.
 *
 * GWT version.
 *
 *
 */
public class URLEncoderDecoderBasedPercentEncoderDecoder implements URIEncoderDecoder.PercentEncoderDecoder {
    @Override
    public String decode(String encodedValue) throws URIEncoderDecoder.EncodingException {
        // The URL decoder will replace + with space so percent escape it.
        encodedValue = encodedValue.replace("+", "%2B");

        String ret = URL.decodeComponent(encodedValue);
        if (ret.indexOf(0xFFFD) != -1) {
            throw new URIEncoderDecoder.EncodingException(
                    "Unable to decode value " + encodedValue + " it contains invalid UTF-8");
        }
        return ret;

    }

    @Override
    public String encode(String decodedValue) throws URIEncoderDecoder.EncodingException {
        return URL.encode(decodedValue);
    }
}