qm.vp.kiev.qmhttplib.retrofit.Utils.java Source code

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Here is the source code for qm.vp.kiev.qmhttplib.retrofit.Utils.java

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/*
 * Copyright (C) 2012 Square, Inc.
 * Copyright (C) 2007 The Guava Authors
 *
 * 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 qm.vp.kiev.qmhttplib.retrofit;

import com.squareup.okhttp.MediaType;
import com.squareup.okhttp.Response;
import com.squareup.okhttp.ResponseBody;

import java.io.IOException;
import java.util.concurrent.Executor;

import okio.Buffer;
import okio.BufferedSource;

final class Utils {
    static <T> T checkNotNull(T object, String message, Object... args) {
        if (object == null) {
            throw new NullPointerException(String.format(message, args));
        }
        return object;
    }

    /**
     * Replace a {@link com.squareup.okhttp.Response} with an identical copy whose body is backed by a
     * {@link okio.Buffer} rather than a {@link okio.Source}.
     */
    static Response readBodyToBytesIfNecessary(Response response) throws IOException {
        final ResponseBody body = response.body();
        if (body == null) {
            return response;
        }

        BufferedSource source = body.source();
        final Buffer buffer = new Buffer();
        buffer.writeAll(source);
        source.close();

        return response.newBuilder().body(new ResponseBody() {
            @Override
            public MediaType contentType() {
                return body.contentType();
            }

            @Override
            public long contentLength() {
                return buffer.size();
            }

            @Override
            public BufferedSource source() {
                return buffer.clone();
            }
        }).build();
    }

    static <T> void validateServiceClass(Class<T> service) {
        if (!service.isInterface()) {
            throw new IllegalArgumentException("Only interface endpoint definitions are supported.");
        }
        // Prevent API interfaces from extending other interfaces. This not only avoids a bug in
        // Android (http://b.android.com/58753) but it forces composition of API declarations which is
        // the recommended pattern.
        if (service.getInterfaces().length > 0) {
            throw new IllegalArgumentException("Interface definitions must not extend other interfaces.");
        }
    }

    static class SynchronousExecutor implements Executor {
        @Override
        public void execute(Runnable runnable) {
            runnable.run();
        }
    }

    private Utils() {
        // No instances.
    }
}