io/text-writer-reader/read-prog.cs - Reading back the text strings encoded in three different ways, with StreamReader.

Lecture 10 - slide 16 : 40 Program 1

using System;
using System.IO;
using System.Text;

public class TextReaderProg{

  public static void Main(){
  
    TextReader tr1 = new StreamReader(
                       new FileStream("f-iso.txt", FileMode.Open),
                       Encoding.GetEncoding("iso-8859-1")),
               tr2 = new StreamReader(
                       new FileStream("f-utf8.txt", FileMode.Open),
                       new UTF8Encoding()),
               tr3 = new StreamReader(             // UTF-16
                       new FileStream("f-utf16.txt", FileMode.Open),
                       new UnicodeEncoding());

    Console.WriteLine(tr1.ReadLine());  Console.WriteLine(tr1.ReadLine());  
    Console.WriteLine(tr2.ReadLine());  Console.WriteLine(tr2.ReadLine());  
    Console.WriteLine(tr3.ReadLine());  Console.WriteLine(tr3.ReadLine());  

    tr1.Close();
    tr2.Close();
    tr3.Close();

    // Raw reading of the files to control the contents at byte level
    FileStream  fs1 = new FileStream("f-iso.txt", FileMode.Open),
                fs2 = new FileStream("f-utf8.txt", FileMode.Open),
                fs3 = new FileStream("f-utf16.txt", FileMode.Open);

    StreamReport(fs1, "Iso Latin 1");   
    StreamReport(fs2, "UTF-8");
    StreamReport(fs3, "UTF-16");

    fs1.Close();
    fs2.Close();
    fs3.Close();
  }

  public static void StreamReport(FileStream fs, string encoding){
    Console.WriteLine();
    Console.WriteLine(encoding);
    int ch, i = 0;
    do{
      ch = fs.ReadByte();
      if (ch != -1) Console.Write("{0,4}", ch);
      i++;
      if (i%10 == 0) Console.WriteLine();
    } while (ch != -1);
    Console.WriteLine();
  }

}