mcs/class/corlib/Mono.Globalization.Unicode/create-combining-class-source.cs

   1 //
   2 //
   3 // create-combining-class-source.cs
   4 //
   5 // Author:
   6 //      Atsushi Enomoto  <atsushi@ximian.com>
   7 //
   8 // Copyright 2005 Novell, Inc
   9 //
  10 // It creates combining class information table.
  11 //
  12
  13 using System;
  14 using System.Globalization;
  15 using System.IO;
  16
  17 namespace Mono.Globalization.Unicode
  18 {
  19         internal class CombiningClassCodeGenerator
  20         {
  21                 private int lineCount = 0;
  22
  23                 public static void Main ()
  24                 {
  25                         new CombiningClassCodeGenerator ().Run ();
  26                 }
  27
  28                 private void Run ()
  29                 {
  30                         try {
  31                                 Process ();
  32                         } catch (Exception ex) {
  33                                 throw new InvalidOperationException ("Internal error at line " + lineCount + " : " + ex);
  34                         }
  35                 }
  36
  37                 private void Process ()
  38                 {
  39                         Console.WriteLine ("public static byte GetCombiningClass (int c)");
  40                         Console.WriteLine ("{");
  41                         Console.WriteLine ("    switch (c) {");
  42
  43                         TextReader reader = Console.In;
  44                         while (reader.Peek () != -1) {
  45                                 string line = reader.ReadLine ();
  46                                 lineCount++;
  47                                 int idx = line.IndexOf ('#');
  48                                 if (idx >= 0)
  49                                         line = line.Substring (0, idx).Trim ();
  50                                 if (line.Length == 0)
  51                                         continue;
  52                                 int n = 0;
  53                                 while (Char.IsDigit (line [n]) || Char.IsLetter (line [n]))
  54                                         n++;
  55                                 int cp = int.Parse (line.Substring (0, n), NumberStyles.HexNumber);
  56
  57                                 int cpEnd = -1;
  58                                 if (line [n] == '.' && line [n + 1] == '.')
  59                                         cpEnd = int.Parse (line.Substring (n + 2, n), NumberStyles.HexNumber);
  60                                 int nameStart = line.IndexOf (';') + 1;
  61                                 int valueStart = line.IndexOf (';', nameStart) + 1;
  62                                 string val = valueStart == 0 ? line.Substring (nameStart) :
  63                                         line.Substring (nameStart, valueStart - nameStart - 1);
  64                                 SetProp (cp, cpEnd, short.Parse (val));
  65                         }
  66
  67                         Console.WriteLine ("            return {0};", prevVal);
  68                         Console.WriteLine ("    default:");
  69                         Console.WriteLine ("            return 0;");
  70                         Console.WriteLine ("    }");
  71                         Console.WriteLine ("}");
  72
  73                         reader.Close ();
  74                 }
  75
  76                 private short prevVal;
  77
  78                 private void SetProp (int cp, int cpEnd, short val)
  79                 {
  80                         if (val == 0)
  81                                 return;
  82
  83                         if (prevVal != val && prevVal != 0)
  84                                 Console.WriteLine ("\t\treturn {0};", prevVal);
  85                         prevVal = val;
  86
  87                         if (cpEnd < 0)
  88                                 Console.WriteLine ("\tcase 0x{0:X}:", cp);
  89                         else
  90                                 for (int i = cp; i <= cpEnd; i++)
  91                                         Console.WriteLine ("\tcase 0x{0:X}:", i);
  92                 }
  93         }
  94 }
  95