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package org.frameworkset.coder;
/**
 * Copyright 2024 bboss
 * 
 * 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.
 */


 

import java.io.*;
import java.nio.ByteBuffer;

public abstract class CharacterDecoder {
	public CharacterDecoder() {
	}
	
	protected abstract int bytesPerAtom();
	
	protected abstract int bytesPerLine();
	
	protected void decodeBufferPrefix(PushbackInputStream var1, OutputStream var2) throws IOException {
	}
	
	protected void decodeBufferSuffix(PushbackInputStream var1, OutputStream var2) throws IOException {
	}
	
	protected int decodeLinePrefix(PushbackInputStream var1, OutputStream var2) throws IOException {
		return this.bytesPerLine();
	}
	
	protected void decodeLineSuffix(PushbackInputStream var1, OutputStream var2) throws IOException {
	}
	
	protected void decodeAtom(PushbackInputStream var1, OutputStream var2, int var3) throws IOException {
		throw new CEStreamExhausted();
	}
	
	protected int readFully(InputStream var1, byte[] var2, int var3, int var4) throws IOException {
		for(int var5 = 0; var5 < var4; ++var5) {
			int var6 = var1.read();
			if (var6 == -1) {
				return var5 == 0 ? -1 : var5;
			}
			
			var2[var5 + var3] = (byte)var6;
		}
		
		return var4;
	}
	
	public void decodeBuffer(InputStream var1, OutputStream var2) throws IOException {
		int var4 = 0;
		PushbackInputStream var5 = new PushbackInputStream(var1);
		this.decodeBufferPrefix(var5, var2);
		
		while(true) {
			try {
				int var6 = this.decodeLinePrefix(var5, var2);
				
				int var3;
				for(var3 = 0; var3 + this.bytesPerAtom() < var6; var3 += this.bytesPerAtom()) {
					this.decodeAtom(var5, var2, this.bytesPerAtom());
					var4 += this.bytesPerAtom();
				}
				
				if (var3 + this.bytesPerAtom() == var6) {
					this.decodeAtom(var5, var2, this.bytesPerAtom());
					var4 += this.bytesPerAtom();
				} else {
					this.decodeAtom(var5, var2, var6 - var3);
					var4 += var6 - var3;
				}
				
				this.decodeLineSuffix(var5, var2);
			} catch (CEStreamExhausted var8) {
				this.decodeBufferSuffix(var5, var2);
				return;
			}
		}
	}
	
	public byte[] decodeBuffer(String var1) throws IOException {
		byte[] var2 = new byte[var1.length()];
		var1.getBytes(0, var1.length(), var2, 0);
		ByteArrayInputStream var3 = new ByteArrayInputStream(var2);
		ByteArrayOutputStream var4 = new ByteArrayOutputStream();
		this.decodeBuffer(var3, var4);
		return var4.toByteArray();
	}
	
	public byte[] decodeBuffer(InputStream var1) throws IOException {
		ByteArrayOutputStream var2 = new ByteArrayOutputStream();
		this.decodeBuffer(var1, var2);
		return var2.toByteArray();
	}
	
	public ByteBuffer decodeBufferToByteBuffer(String var1) throws IOException {
		return ByteBuffer.wrap(this.decodeBuffer(var1));
	}
	
	public ByteBuffer decodeBufferToByteBuffer(InputStream var1) throws IOException {
		return ByteBuffer.wrap(this.decodeBuffer(var1));
	}
}