httpcore5/src/test/java/org/apache/hc/core5/http/impl/nio/CodecTestUtils.java

/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.hc.core5.http.impl.nio;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;

class CodecTestUtils {

    public static ByteBuffer wrap(final String s) {
        return ByteBuffer.wrap(s.getBytes(StandardCharsets.US_ASCII));
    }

    public static String convert(final ByteBuffer src) {
        src.flip();
        final StringBuilder buffer = new StringBuilder(src.remaining());
        while (src.hasRemaining()) {
            buffer.append((char)(src.get() & 0xff));
        }
        return buffer.toString();
    }

    public static String readFromFile(final File file) throws Exception {
        final FileInputStream filestream = new FileInputStream(file);
        try (InputStreamReader reader = new InputStreamReader(filestream)) {
            final StringBuilder buffer = new StringBuilder();
            final char[] tmp = new char[2048];
            int l;
            while ((l = reader.read(tmp)) != -1) {
                buffer.append(tmp, 0, l);
            }
            return buffer.toString();
        }
    }

}