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
  31 using System;
  32 using System.Collections;
  33 using System.IO;
  34 using System.Resources;
  35 using System.Text;
  36
  37 namespace Mono.XBuild.Tasks.GenerateResourceInternal {
  38         internal class PoResourceReader : IResourceReader {
  39                 Hashtable data;
  40                 Stream s;
  41                 int line_num;
  42
  43                 public PoResourceReader (Stream stream)
  44                 {
  45                         data = new Hashtable ();
  46                         s = stream;
  47                         Load ();
  48                 }
  49
  50                 public virtual void Close ()
  51                 {
  52                         s.Close ();
  53                 }
  54
  55                 public IDictionaryEnumerator GetEnumerator()
  56                 {
  57                         return data.GetEnumerator ();
  58                 }
  59
  60                 string GetValue (string line)
  61                 {
  62                         int begin = line.IndexOf ('"');
  63                         if (begin == -1)
  64                                 throw new FormatException (String.Format ("No begin quote at line {0}: {1}", line_num, line));
  65
  66                         int end = line.LastIndexOf ('"');
  67                         if (end == -1)
  68                                 throw new FormatException (String.Format ("No closing quote at line {0}: {1}", line_num, line));
  69
  70                         return line.Substring (begin + 1, end - begin - 1);
  71                 }
  72
  73                 void Load ()
  74                 {
  75                         StreamReader reader = new StreamReader (s);
  76                         string line;
  77                         string msgid = null;
  78                         string msgstr = null;
  79                         bool ignoreNext = false;
  80
  81                         while ((line = reader.ReadLine ()) != null) {
  82                                 line_num++;
  83                                 line = line.Trim ();
  84                                 if (line.Length == 0)
  85                                         continue;
  86
  87                                 if (line [0] == '#') {
  88                                         if (line.Length == 1 || line [1] != ',')
  89                                                 continue;
  90
  91                                         if (line.IndexOf ("fuzzy") != -1) {
  92                                                 ignoreNext = true;
  93                                                 if (msgid != null) {
  94                                                         if (msgstr == null)
  95                                                                 throw new FormatException ("Error. Line: " + line_num);
  96                                                         data.Add (msgid, msgstr);
  97                                                         msgid = null;
  98                                                         msgstr = null;
  99                                                 }
 100                                         }
 101                                         continue;
 102                                 }
 103
 104                                 if (line.StartsWith ("msgid ")) {
 105                                         if (msgid == null && msgstr != null)
 106                                                 throw new FormatException ("Found 2 consecutive msgid. Line: " + line_num);
 107
 108                                         if (msgstr != null) {
 109                                                 if (!ignoreNext)
 110                                                         data.Add (msgid, msgstr);
 111
 112                                                 ignoreNext = false;
 113                                                 msgid = null;
 114                                                 msgstr = null;
 115                                         }
 116
 117                                         msgid = GetValue (line);
 118                                         continue;
 119                                 }
 120
 121                                 if (line.StartsWith ("msgstr ")) {
 122                                         if (msgid == null)
 123                                                 throw new FormatException ("msgstr with no msgid. Line: " + line_num);
 124
 125                                         msgstr = GetValue (line);
 126                                         continue;
 127                                 }
 128
 129                                 if (line [0] == '"') {
 130                                         if (msgid == null || msgstr == null)
 131                                                 throw new FormatException ("Invalid format. Line: " + line_num);
 132
 133                                         msgstr += GetValue (line);
 134                                         continue;
 135                                 }
 136
 137                                 throw new FormatException ("Unexpected data. Line: " + line_num);
 138                         }
 139
 140                         if (msgid != null) {
 141                                 if (msgstr == null)
 142                                         throw new FormatException ("Expecting msgstr. Line: " + line_num);
 143
 144                                 if (!ignoreNext)
 145                                         data.Add (msgid, msgstr);
 146                         }
 147                 }
 148
 149                 IEnumerator IEnumerable.GetEnumerator ()
 150                 {
 151                         return GetEnumerator();
 152                 }
 153
 154                 void IDisposable.Dispose ()
 155                 {
 156                         if (data != null)
 157                                 data = null;
 158
 159                         if (s != null) {
 160                                 s.Close ();
 161                                 s = null;
 162                         }
 163                 }
 164         }
 165 }
 166