/**
 * @author T.Kamoshida
 */
public class TestChar {

	public static void main(String[] args) throws Exception{

		String unicodestr ="\u0102\u0304\u0506\u0708";
		//as a decoded string with 4chars UNCOMPRESSED UNICODE
		String asciistr   ="\u0001\u0002\u0003\u0004";
		//as a decoded string with 4chars COMPRESSED UNICODE

		//Show How works each Encoder.
		//It shows System Encoder do same job as StringUtil
		System.out.println("CASE1:encode String -> byte array with UTF16-BE");
		showEncodeString(unicodestr,"UTF-16BE");
		System.out.println();

		System.out.println("CASE2:encode String -> byte array with UTF16-LE");
		showEncodeString(unicodestr,"UTF-16LE");
		System.out.println();

		System.out.println("CASE3:encode String -> byte array with ISO-8859-1");
		showEncodeString(asciistr,"ISO-8859-1");
		System.out.println();
		
		//Emulate encoding 16Bit Unicode on Excel File
		System.out.println("CASE4:decode byte array 16BitUnicode with LittleEndian(16BitUnicode on XLS)<-> String with UTF-16LE");
		showDecodeString(unicodestr,"UTF-16LE","UTF-16LE");
		System.out.println();

		//Emulate encoding 8Bit(Compressed)Unicode on Excel File
		System.out.println("CASE5:decode byte array Latin1(8Bit compressed Unicode on XLS)<-> String with ISO-8859-1");
		showDecodeString(asciistr,"ISO-8859-1","ISO-8859-1");
		System.out.println();

		//Emulate mismatch between Decoder and byte array
		//please change from "UTF-16" to any "native" encoding indicator
		System.out.println("CASE6:To see what happen in the bug in other platform");
		showDecodeString(asciistr,"ISO-8859-1","UTF-16");
		System.out.println();
		showDecodeString(asciistr,"UTF-16","ISO-8859-1");
		System.out.println();

		System.out.println("CASE7:To see side effect of UTF-16(add endian indicator)");
		showDecodeString(unicodestr,"UTF-16","UTF-16");
		System.out.println();
		showDecodeString(unicodestr,"UTF-16","UTF-16BE");
		System.out.println();
	}

	private static void showChars(String src){
		System.out.print("CHAR SEQUENCE:");
		for(int i = 0 ; i < src.length() ; i++){
			System.out.print("[U+"+Integer.toHexString(src.charAt(i))+"]");
		}
		System.out.println();
	}
	
	
	private static byte[] showEncodeString(String src,String dec)throws Exception{
		System.out.println("Base String is:");
		showChars(src);

		System.out.println("Encoder is "+ dec +":");
		byte[] array = src.getBytes(dec);
		System.out.print("BYTE ARRAY:");
		for(int i = 0 ; i < array.length ; i++){
			System.out.print("["+Integer.toHexString(array[i] & 0xFF)+"]");
		}
		System.out.println();
		return array;
	}

	private static void showDecodeString(String src,String dec,String enc)throws Exception{
		byte[] array = showEncodeString(src,dec);

		System.out.println("Decoder is "+ enc +":");
		showChars(new String(array,enc));
	}
}