KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > nu > xom > TextWriterFactory


1 /* Copyright 2002-2004 Elliotte Rusty Harold
2    
3    This library is free software; you can redistribute it and/or modify
4    it under the terms of version 2.1 of the GNU Lesser General Public
5    License as published by the Free Software Foundation.
6    
7    This library is distributed in the hope that it will be useful,
8    but WITHOUT ANY WARRANTY; without even the implied warranty of
9    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10    GNU Lesser General Public License for more details.
11    
12    You should have received a copy of the GNU Lesser General Public
13    License along with this library; if not, write to the
14    Free Software Foundation, Inc., 59 Temple Place, Suite 330,
15    Boston, MA 02111-1307 USA
16    
17    You can contact Elliotte Rusty Harold by sending e-mail to
18    elharo@metalab.unc.edu. Please include the word "XOM" in the
19    subject line. The XOM home page is located at http://www.xom.nu/
20 */
21
22 package nu.xom;
23
24 import java.io.UnsupportedEncodingException JavaDoc;
25 import java.io.Writer JavaDoc;
26 import java.util.Locale JavaDoc;
27
28 /**
29  * @author Elliotte Rusty Harold
30  * @version 1.0
31  */
32 class TextWriterFactory {
33
34     public static TextWriter getTextWriter(
35       Writer JavaDoc out, String JavaDoc encoding) {
36     
37         // Not all encoding names are case-insensitive in Java, even
38 // though they should be. For instance, MacRoman isn't.
39 String JavaDoc encodingUpperCase = encoding.toUpperCase(Locale.ENGLISH);
40         if (encodingUpperCase.startsWith("UTF")
41           || encodingUpperCase.startsWith("UNICODE")
42           ) {
43             return new UnicodeWriter(out, encoding);
44         }
45         else if (encodingUpperCase.startsWith("ISO-10646-UCS")
46           || encodingUpperCase.startsWith("UCS")
47           || encodingUpperCase.equals("GB18030")) {
48           // GB18030 has a 1-1 mapping to Unicode. However, the Sun
49 // GB18030 VM is buggy with non-BMP characters. The IBM VM
50 // gets this right, but for safety we'll escape all non-BMP
51 // characters.
52 return new UCSWriter(out, encoding);
53         }
54         else if (encodingUpperCase.equals("ISO-8859-1")) {
55             return new Latin1Writer(out, encoding);
56         }
57         else if (encodingUpperCase.equals("ISO-8859-2")) {
58             return new Latin2Writer(out, encodingUpperCase);
59         }
60         else if (encodingUpperCase.equals("ISO-8859-3")) {
61             return new Latin3Writer(out, encodingUpperCase);
62         }
63         else if (encodingUpperCase.equals("ISO-8859-4")) {
64             return new Latin4Writer(out, encodingUpperCase);
65         }
66         else if (encodingUpperCase.equals("ISO-8859-5")) {
67             return new ISOCyrillicWriter(out, encodingUpperCase);
68         }
69         else if (encodingUpperCase.equals("ISO-8859-6")) {
70             return new ISOArabicWriter(out, encodingUpperCase);
71         }
72         else if (encodingUpperCase.equals("ISO-8859-7")) {
73             return new ISOGreekWriter(out, encodingUpperCase);
74         }
75         else if (encodingUpperCase.equals("ISO-8859-8")) {
76             return new ISOHebrewWriter(out, encodingUpperCase);
77         }
78         else if (encodingUpperCase.equals("ISO-8859-9")
79             || encodingUpperCase.equals("EBCDIC-CP-TR")
80             || encodingUpperCase.equals("CP1037")) {
81             return new Latin5Writer(out, encodingUpperCase);
82         }
83         else if (encoding.equals("ISO-8859-10")) {
84             return new Latin6Writer(out, encoding);
85         }
86         else if (encodingUpperCase.equals("ISO-8859-11")
87                 || encodingUpperCase.equals("TIS-620")
88                 || encodingUpperCase.equals("TIS620")) {
89             return new ISOThaiWriter(out, encodingUpperCase);
90         }
91         // There's no such thing as ISO-8859-12
92 // nor is there likely to be one in the future.
93 else if (encodingUpperCase.equals("ISO-8859-13")) {
94             return new Latin7Writer(out, encodingUpperCase);
95         }
96         else if (encoding.equals("ISO-8859-14")) {
97             return new Latin8Writer(out, encoding);
98         }
99         else if (encodingUpperCase.equals("ISO-8859-15")) {
100             return new Latin9Writer(out, encodingUpperCase);
101         }
102         else if (encoding.equals("ISO-8859-16")) {
103             return new Latin10Writer(out, encoding);
104         }
105         else if (encodingUpperCase.endsWith("ASCII")) {
106             return new ASCIIWriter(out, encodingUpperCase);
107         }
108         else if (encodingUpperCase.equals("IBM037")
109               || encodingUpperCase.equals("CP037")
110               || encodingUpperCase.equals("EBCDIC-CP-US")
111               || encodingUpperCase.equals("EBCDIC-CP-CA")
112               || encodingUpperCase.equals("EBCDIC-CP-WA")
113               || encodingUpperCase.equals("EBCDIC-CP-NL")
114               || encodingUpperCase.equals("CSIBM037")) {
115             // EBCDIC-37 has same character set as ISO-8859-1;
116 // just at different code points.
117 return new Latin1Writer(out, encodingUpperCase);
118         }
119         else {
120             try {
121                 return new GenericWriter(out, encoding);
122             }
123             catch (UnsupportedEncodingException JavaDoc ex) {
124                 return new ASCIIWriter(out, encoding);
125             }
126         }
127         
128     }
129
130 }
131
Popular Tags