okhttp3.UppercaseResponseInterceptor Maven / Gradle / Ivy
/*
* Copyright (C) 2019 Square, 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 okhttp3;
import java.io.IOException;
import okio.Buffer;
import okio.BufferedSource;
import okio.ForwardingSource;
import okio.Okio;
/** Rewrites the response body returned from the server to be all uppercase. */
public final class UppercaseResponseInterceptor implements Interceptor {
@Override public Response intercept(Chain chain) throws IOException {
return uppercaseResponse(chain.proceed(chain.request()));
}
private Response uppercaseResponse(Response response) {
ResponseBody uppercaseBody = new ForwardingResponseBody(response.body()) {
@Override public BufferedSource source() {
return Okio.buffer(uppercaseSource(delegate().source()));
}
};
return response.newBuilder()
.body(uppercaseBody)
.build();
}
private ForwardingSource uppercaseSource(BufferedSource source) {
return new ForwardingSource(source) {
@Override public long read(Buffer sink, long byteCount) throws IOException {
Buffer buffer = new Buffer();
long read = delegate().read(buffer, byteCount);
if (read != -1L) sink.write(buffer.readByteString().toAsciiUppercase());
return read;
}
};
}
}