com.upokecenter.text.encoders.EncodingAscii Maven / Gradle / Ivy

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A Java library that implements character encodings used in Web pages and email.

There is a newer version: 0.6.0

package com.upokecenter.text.encoders;

import java.io.*;
import com.upokecenter.util.*;
import com.upokecenter.text.*;

  public class EncodingAscii implements ICharacterEncoding {
    private static class Decoder implements ICharacterDecoder {
      public int ReadChar(IByteReader transform) {
        if (transform == null) {
  throw new NullPointerException("transform");
}
        int b = transform.read();
        return (b < 0) ? (-1) : ((b < 0x80) ? b : -2);
      }
    }

    private static class Encoder implements ICharacterEncoder {
      public int Encode(
      int c,
      IWriter output) {
        if (output == null) {
  throw new NullPointerException("output");
}
        if (c < 0) {
          return -1;
        }
        if (c < 0x80) {
          output.write((byte)c);
          return 1;
        }
        return -2;
      }
    }

    private final Encoder encoder;
    private final Decoder decoder;

    public EncodingAscii() {
      this.encoder = new Encoder();
      this.decoder = new Decoder();
    }

    public ICharacterDecoder GetDecoder() {
      return this.decoder;
    }

    public ICharacterEncoder GetEncoder() {
      return this.encoder;
    }
  }