mcs/class/Microsoft.Build.Tasks/Mono.XBuild.Tasks.GenerateResourceInternal/PoResourceReader.cs

   1 //
   2 // PoResourceReader.cs: Reader from monoresgen.
   3 //
   4 // Author:
   5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   6 //   Paolo Molaro (lupus@ximian.com)
   7 //   Gonzalo Paniagua Javier (gonzalo@ximian.com)
   8 //
   9 // (C) 2005 Marek Sieradzki
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 #if NET_2_0
  31
  32 using System;
  33 using System.Collections;
  34 using System.IO;
  35 using System.Resources;
  36 using System.Text;
  37
  38 namespace Mono.XBuild.Tasks.GenerateResourceInternal {
  39         internal class PoResourceReader : IResourceReader {
  40                 Hashtable data;
  41                 Stream s;
  42                 int line_num;
  43
  44                 public PoResourceReader (Stream stream)
  45                 {
  46                         data = new Hashtable ();
  47                         s = stream;
  48                         Load ();
  49                 }
  50
  51                 public virtual void Close ()
  52                 {
  53                         s.Close ();
  54                 }
  55
  56                 public IDictionaryEnumerator GetEnumerator()
  57                 {
  58                         return data.GetEnumerator ();
  59                 }
  60
  61                 string GetValue (string line)
  62                 {
  63                         int begin = line.IndexOf ('"');
  64                         if (begin == -1)
  65                                 throw new FormatException (String.Format ("No begin quote at line {0}: {1}", line_num, line));
  66
  67                         int end = line.LastIndexOf ('"');
  68                         if (end == -1)
  69                                 throw new FormatException (String.Format ("No closing quote at line {0}: {1}", line_num, line));
  70
  71                         return line.Substring (begin + 1, end - begin - 1);
  72                 }
  73
  74                 void Load ()
  75                 {
  76                         StreamReader reader = new StreamReader (s);
  77                         string line;
  78                         string msgid = null;
  79                         string msgstr = null;
  80                         bool ignoreNext = false;
  81
  82                         while ((line = reader.ReadLine ()) != null) {
  83                                 line_num++;
  84                                 line = line.Trim ();
  85                                 if (line.Length == 0)
  86                                         continue;
  87
  88                                 if (line [0] == '#') {
  89                                         if (line.Length == 1 || line [1] != ',')
  90                                                 continue;
  91
  92                                         if (line.IndexOf ("fuzzy") != -1) {
  93                                                 ignoreNext = true;
  94                                                 if (msgid != null) {
  95                                                         if (msgstr == null)
  96                                                                 throw new FormatException ("Error. Line: " + line_num);
  97                                                         data.Add (msgid, msgstr);
  98                                                         msgid = null;
  99                                                         msgstr = null;
 100                                                 }
 101                                         }
 102                                         continue;
 103                                 }
 104
 105                                 if (line.StartsWith ("msgid ")) {
 106                                         if (msgid == null && msgstr != null)
 107                                                 throw new FormatException ("Found 2 consecutive msgid. Line: " + line_num);
 108
 109                                         if (msgstr != null) {
 110                                                 if (!ignoreNext)
 111                                                         data.Add (msgid, msgstr);
 112
 113                                                 ignoreNext = false;
 114                                                 msgid = null;
 115                                                 msgstr = null;
 116                                         }
 117
 118                                         msgid = GetValue (line);
 119                                         continue;
 120                                 }
 121
 122                                 if (line.StartsWith ("msgstr ")) {
 123                                         if (msgid == null)
 124                                                 throw new FormatException ("msgstr with no msgid. Line: " + line_num);
 125
 126                                         msgstr = GetValue (line);
 127                                         continue;
 128                                 }
 129
 130                                 if (line [0] == '"') {
 131                                         if (msgid == null || msgstr == null)
 132                                                 throw new FormatException ("Invalid format. Line: " + line_num);
 133
 134                                         msgstr += GetValue (line);
 135                                         continue;
 136                                 }
 137
 138                                 throw new FormatException ("Unexpected data. Line: " + line_num);
 139                         }
 140
 141                         if (msgid != null) {
 142                                 if (msgstr == null)
 143                                         throw new FormatException ("Expecting msgstr. Line: " + line_num);
 144
 145                                 if (!ignoreNext)
 146                                         data.Add (msgid, msgstr);
 147                         }
 148                 }
 149
 150                 IEnumerator IEnumerable.GetEnumerator ()
 151                 {
 152                         return GetEnumerator();
 153                 }
 154
 155                 void IDisposable.Dispose ()
 156                 {
 157                         if (data != null)
 158                                 data = null;
 159
 160                         if (s != null) {
 161                                 s.Close ();
 162                                 s = null;
 163                         }
 164                 }
 165         }
 166 }
 167
 168 #endif