class/I18N/tools/table_from.cs

   1 /**
   2  * Create a table from CHARSET to Unicode.
   3  *
   4  * @author Bruno Haible
   5  */
   6
   7 using System; /* String, Console */
   8 using System.Text; /* Encoding */
   9
  10 public class table_from {
  11   static String toHexString1 (int i) {
  12     return new String(new char[] { "0123456789ABCDEF" [i] });
  13   }
  14   static String toHexString2 (int i) {
  15     return  toHexString1((i>>4)&0x0f)
  16            +toHexString1(i&0x0f);
  17   }
  18   static String toHexString4 (int i) {
  19     return  toHexString1((i>>12)&0x0f)
  20            +toHexString1((i>>8)&0x0f)
  21            +toHexString1((i>>4)&0x0f)
  22            +toHexString1(i&0x0f);
  23   }
  24   static void printOutput(char[] outp) {
  25     Console.Out.Write("0x");
  26     for (int j = 0; j < outp.Length; j++) {
  27       if (j > 0)
  28         Console.Out.Write(" 0x");
  29       if (j+1 < outp.Length
  30           && outp[j] >= 0xd800 && outp[j] < 0xdc00
  31           && outp[j+1] >= 0xdc00 && outp[j+1] < 0xe000) {
  32         int c = 0x10000 + ((outp[j] - 0xd800) << 10) + (outp[j+1] - 0xdc00);
  33         Console.Out.Write(((Int32)c).ToString("X"));
  34         j++;
  35       } else
  36         Console.Out.Write(toHexString4(outp[j]));
  37     }
  38   }
  39   public static int Main (String[] args) {
  40     try {
  41       if (args.Length != 1) {
  42         Console.Error.WriteLine("Usage: mono table_from charset");
  43         return 1;
  44       }
  45       String charset = args[0];
  46       Encoding encoding;
  47       try {
  48         encoding = Encoding.GetEncoding(charset);
  49       } catch (NotSupportedException e) {
  50         Console.Error.WriteLine("no converter for "+charset);
  51         return 1;
  52       }
  53       byte[] qmark = encoding.GetBytes(new char[] { (char)0x003f });
  54       for (int i0 = 0; i0 < 0x100; i0++) {
  55         char[] outp = encoding.GetChars(new byte[] { (byte)i0 });
  56         if (outp.Length > 0
  57             && !(outp.Length >= 1 && outp[0] == 0x003f
  58                  && !(qmark.Length == 1 && i0 == qmark[0]))) {
  59           Console.Out.Write("0x"+toHexString2(i0)+"\t");
  60           printOutput(outp);
  61           Console.Out.WriteLine();
  62         } else if (outp.Length <= 1) {
  63           for (int i1 = 0; i1 < 0x100; i1++) {
  64             outp = encoding.GetChars(new byte[] { (byte)i0, (byte)i1 });
  65             if (outp.Length > 0
  66                 && !(outp.Length >= 1 && outp[0] == 0x003f
  67                      && !(qmark.Length == 2 && i0 == qmark[0] && i1 == qmark[1]))) {
  68               Console.Out.Write("0x"+toHexString2(i0)+toHexString2(i1)+"\t");
  69               printOutput(outp);
  70               Console.Out.WriteLine();
  71             } else if (outp.Length <= 1) {
  72               for (int i2 = 0; i2 < 0x100; i2++) {
  73                 outp = encoding.GetChars(new byte[] { (byte)i0, (byte)i1, (byte)i2 });
  74                 if (outp.Length > 0
  75                     && !(outp.Length >= 1 && outp[0] == 0x003f
  76                          && !(qmark.Length == 3
  77                               && i0 == qmark[0] && i1 == qmark[1] && i2 == qmark[2]))) {
  78                   Console.Out.Write("0x"+toHexString2(i0)+toHexString2(i1)+toHexString2(i2)+"\t");
  79                   printOutput(outp);
  80                   Console.Out.WriteLine();
  81                 } else if (outp.Length <= 1) {
  82                   for (int i3 = 0; i3 < 0x100; i3++) {
  83                     outp = encoding.GetChars(new byte[] { (byte)i0, (byte)i1, (byte)i2, (byte)i3 });
  84                     if (outp.Length > 0
  85                         && !(outp.Length >= 1 && outp[0] == 0x003f
  86                              && !(qmark.Length == 4
  87                                   && i0 == qmark[0] && i1 == qmark[1] && i2 == qmark[2] && i3 == qmark[3]))) {
  88                       Console.Out.Write("0x"+toHexString2(i0)+toHexString2(i1)+toHexString2(i2)+toHexString2(i3)+"\t");
  89                       printOutput(outp);
  90                       Console.Out.WriteLine();
  91                     }
  92                   }
  93                 }
  94               }
  95             }
  96           }
  97         }
  98       }
  99     } catch (Exception e) {
 100       Console.Error.WriteLine(e);
 101       Console.Error.WriteLine(e.StackTrace);
 102       return 1;
 103     }
 104     return 0;
 105   }
 106 }