/*
 * Copyright 2015 The Netty Project
 *
 * The Netty Project 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.
 */
package io.netty.handler.codec;

import io.netty.util.AsciiString;
import io.netty.util.internal.PlatformDependent;

import java.text.ParseException;
import java.util.Date;

Converts to/from native types, general Object, and CharSequences.
/** * Converts to/from native types, general {@link Object}, and {@link CharSequence}s. */
public class CharSequenceValueConverter implements ValueConverter<CharSequence> { public static final CharSequenceValueConverter INSTANCE = new CharSequenceValueConverter(); private static final AsciiString TRUE_ASCII = new AsciiString("true"); @Override public CharSequence convertObject(Object value) { if (value instanceof CharSequence) { return (CharSequence) value; } return value.toString(); } @Override public CharSequence convertInt(int value) { return String.valueOf(value); } @Override public CharSequence convertLong(long value) { return String.valueOf(value); } @Override public CharSequence convertDouble(double value) { return String.valueOf(value); } @Override public CharSequence convertChar(char value) { return String.valueOf(value); } @Override public CharSequence convertBoolean(boolean value) { return String.valueOf(value); } @Override public CharSequence convertFloat(float value) { return String.valueOf(value); } @Override public boolean convertToBoolean(CharSequence value) { return AsciiString.contentEqualsIgnoreCase(value, TRUE_ASCII); } @Override public CharSequence convertByte(byte value) { return String.valueOf(value); } @Override public byte convertToByte(CharSequence value) { if (value instanceof AsciiString) { return ((AsciiString) value).byteAt(0); } return Byte.parseByte(value.toString()); } @Override public char convertToChar(CharSequence value) { return value.charAt(0); } @Override public CharSequence convertShort(short value) { return String.valueOf(value); } @Override public short convertToShort(CharSequence value) { if (value instanceof AsciiString) { return ((AsciiString) value).parseShort(); } return Short.parseShort(value.toString()); } @Override public int convertToInt(CharSequence value) { if (value instanceof AsciiString) { return ((AsciiString) value).parseInt(); } return Integer.parseInt(value.toString()); } @Override public long convertToLong(CharSequence value) { if (value instanceof AsciiString) { return ((AsciiString) value).parseLong(); } return Long.parseLong(value.toString()); } @Override public CharSequence convertTimeMillis(long value) { return DateFormatter.format(new Date(value)); } @Override public long convertToTimeMillis(CharSequence value) { Date date = DateFormatter.parseHttpDate(value); if (date == null) { PlatformDependent.throwException(new ParseException("header can't be parsed into a Date: " + value, 0)); return 0; } return date.getTime(); } @Override public float convertToFloat(CharSequence value) { if (value instanceof AsciiString) { return ((AsciiString) value).parseFloat(); } return Float.parseFloat(value.toString()); } @Override public double convertToDouble(CharSequence value) { if (value instanceof AsciiString) { return ((AsciiString) value).parseDouble(); } return Double.parseDouble(value.toString()); } }