01: /***
02: * Retrotranslator: a Java bytecode transformer that translates Java classes
03: * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
04: *
05: * Copyright (c) 2005 - 2008 Taras Puchko
06: * All rights reserved.
07: *
08: * Redistribution and use in source and binary forms, with or without
09: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the copyright holders nor the names of its
17: * contributors may be used to endorse or promote products derived from
18: * this software without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30: * THE POSSIBILITY OF SUCH DAMAGE.
31: */package net.sf.retrotranslator.runtime.format;
32:
33: import java.util.IllegalFormatCodePointException;
34:
35: /**
36: * @author Taras Puchko
37: */
38: class CharacterConversion extends Conversion {
39:
40: public void format(FormatContext context) {
41: context.assertNoPrecision();
42: context.assertNoFlag('#');
43: context.checkWidth();
44: context.writePadded(printf(context));
45: }
46:
47: private static String printf(FormatContext context) {
48: Object argument = context.getArgument();
49: if (argument instanceof Character || argument == null) {
50: return String.valueOf(argument);
51: }
52: if (argument instanceof Byte) {
53: return printf((Byte) argument);
54: }
55: if (argument instanceof Short) {
56: return printf((Short) argument);
57: }
58: if (argument instanceof Integer) {
59: return printf((Integer) argument);
60: }
61: throw context.getConversionException();
62: }
63:
64: private static String printf(int codePoint) {
65: if (codePoint < 0 || codePoint > 0x10FFFF) {
66: throw new IllegalFormatCodePointException(codePoint);
67: }
68: if (codePoint < 0x10000) {
69: return Character.toString((char) codePoint);
70: }
71: int low = codePoint & 0x03FF | 0xDC00;
72: int high = ((codePoint - 0x10000) >>> 10) | 0xD800;
73: return new String(new char[] { (char) high, (char) low });
74: }
75:
76: }
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