tools/locale-builder/Entry.cs

   1 //
   2 // Entry.cs
   3 //
   4 // Authors:
   5 //      Marek Safar  <marek.safar@gmail.com>
   6 //
   7 // Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Text;
  31 using System.Collections.Generic;
  32
  33 namespace Mono.Tools.LocaleBuilder
  34 {
  35         public class Entry
  36         {
  37                 // maps strings to indexes
  38                 static Dictionary<string, int> hash = new Dictionary<string, int> ();
  39                 static List<string> string_order = new List<string> ();
  40                 // idx 0 is reserved to indicate null
  41                 static int curpos = 1;
  42
  43                 // serialize the strings in Hashtable.
  44                 public static string GetStrings ()
  45                 {
  46                         Console.WriteLine ("Total string data size: {0}", curpos);
  47                         if (curpos > UInt16.MaxValue)
  48                                 throw new Exception ("need to increase idx size in culture-info.h");
  49                         StringBuilder ret = new StringBuilder ();
  50                         // the null entry
  51                         ret.Append ("\"\\0\"\n");
  52                         foreach (string s in string_order) {
  53                                 ret.Append ("\t\"");
  54                                 ret.Append (s);
  55                                 ret.Append ("\\0\"\n");
  56                         }
  57                         return ret.ToString ();
  58                 }
  59
  60                 static int AddString (string s, int size)
  61                 {
  62                         if (!hash.ContainsKey (s)) {
  63                                 int ret;
  64                                 string_order.Add (s);
  65                                 ret = curpos;
  66                                 hash.Add (s, curpos);
  67                                 curpos += size + 1; // null terminator
  68                                 return ret;
  69                         }
  70
  71                         return hash[s];
  72                 }
  73
  74                 protected static StringBuilder AppendNames (StringBuilder builder, IList<string> names)
  75                 {
  76                         builder.Append ('{');
  77                         for (int i = 0; i < names.Count; i++) {
  78                                 if (i > 0)
  79                                         builder.Append (", ");
  80
  81                                 builder.Append (EncodeStringIdx (names[i]));
  82                         }
  83                         builder.Append ("}");
  84
  85                         return builder;
  86                 }
  87
  88                 internal static String EncodeStringIdx (string str)
  89                 {
  90                         if (str == null)
  91                                 return "0";
  92
  93                         StringBuilder ret = new StringBuilder ();
  94                         byte[] ba = new UTF8Encoding ().GetBytes (str);
  95                         bool in_hex = false;
  96                         foreach (byte b in ba) {
  97                                 if (b > 127 || (in_hex && is_hex (b))) {
  98                                         ret.AppendFormat ("\\x{0:x}", b);
  99                                         in_hex = true;
 100                                 } else {
 101                                         if (b == '\\')
 102                                                 ret.Append ('\\');
 103                                         ret.Append ((char) b);
 104                                         in_hex = false;
 105                                 }
 106                         }
 107                         int res = AddString (ret.ToString (), ba.Length);
 108                         return res.ToString ();
 109                 }
 110
 111                 private static bool is_hex (int e)
 112                 {
 113                         return (e >= '0' && e <= '9') || (e >= 'A' && e <= 'F') || (e >= 'a' && e <= 'f');
 114                 }
 115         }
 116 }