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Java > Open Source Codes > com > caucho > quercus > lib > gettext > GettextParser


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Nam Nguyen
28  */
29
30 package com.caucho.quercus.lib.gettext;
31
32 import com.caucho.quercus.env.StringValue;
33 import com.caucho.quercus.env.UnicodeValue;
34 import com.caucho.quercus.lib.gettext.expr.PluralExpr;
35
36 import java.io.IOException JavaDoc;
37 import java.util.ArrayList JavaDoc;
38 import java.util.HashMap JavaDoc;
39
40 abstract class GettextParser
41 {
42   PluralExpr _pluralExpr;
43
44   PluralExpr getPluralExpr()
45   {
46     return _pluralExpr;
47   }
48
49   /**
50    * Extracts the charset from the gettext metadata.
51    */
52   protected String JavaDoc getCharset(StringValue metadata)
53   {
54     String JavaDoc header = "charset=";
55     int i = metadata.indexOf(header);
56
57     if (i < 0)
58       return "UTF-8";
59
60     i = i + header.length();
61     int len = metadata.length();
62
63     int j = i + 1;
64     for (; j < len; j++) {
65       char ch = metadata.charAt(j);
66
67       switch (ch) {
68         case ' ':
69         case '\t':
70         case '\r':
71         case '\n':
72           return metadata.substring(i, j).toString();
73         default:
74           continue;
75       }
76     }
77
78     return metadata.substring(i, j).toString();
79   }
80
81   /**
82    * Returns the gettext translations.
83    *
84    * @return translations from file, or null on error
85    */
86   abstract HashMap JavaDoc<UnicodeValue, ArrayList JavaDoc<UnicodeValue>> readTranslations()
87     throws IOException JavaDoc;
88
89   abstract void close();
90 }
91
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