1 /* UnicodeReader.java --
2 Copyright (C) 2005 Free Software Foundation, Inc.
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
38 package gnu
.xml
.stream
;
40 import java
.io
.IOException
;
41 import java
.io
.Reader
;
44 * A reader that converts UTF-16 characters to Unicode code points.
46 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
48 public class UnicodeReader
53 UnicodeReader(Reader in
)
58 public void mark(int limit
)
76 if (ret
>= 0xd800 && ret
< 0xdc00)
80 if (low
>= 0xdc00 && low
< 0xe000)
81 ret
= Character
.toCodePoint((char) ret
, (char) low
);
83 throw new IOException("unpaired surrogate: U+" +
84 Integer
.toHexString(ret
));
86 else if (ret
>= 0xdc00 && ret
< 0xe000)
87 throw new IOException("unpaired surrogate: U+" +
88 Integer
.toHexString(ret
));
92 public int read(int[] buf
, int off
, int len
)
97 char[] b2
= new char[len
];
98 int ret
= in
.read(b2
, 0, len
);
106 if (c
>= 0xd800 && c
< 0xdc00)
108 // Unicode surrogate?
110 if (d
>= 0xdc00 && d
< 0xe000)
112 buf
[j
++] = Character
.toCodePoint(c
, d
);
117 throw new IOException("unpaired surrogate: U+" +
118 Integer
.toHexString(c
));
120 else if (c
>= 0xdc00 && c
< 0xe000)
121 throw new IOException("unpaired surrogate: U+" +
122 Integer
.toHexString(c
));
129 if (c
>= 0xd800 && c
< 0xdc00)
132 if (low
>= 0xdc00 && low
< 0xe000)
134 buf
[j
++] = Character
.toCodePoint(c
, (char) low
);
138 throw new IOException("unpaired surrogate: U+" +
139 Integer
.toHexString(c
));
141 else if (c
>= 0xdc00 && c
< 0xe000)
142 throw new IOException("unpaired surrogate: U+" +
143 Integer
.toHexString(c
));
156 * Returns the specified UTF-16 char array as an array of Unicode code
159 public static int[] toCodePointArray(String text
)
162 char[] b2
= text
.toCharArray();
163 int[] buf
= new int[b2
.length
];
166 int l
= b2
.length
- 1;
171 if (c
>= 0xd800 && c
< 0xdc00)
173 // Unicode surrogate?
175 if (d
>= 0xdc00 && d
< 0xe000)
177 buf
[j
++] = Character
.toCodePoint(c
, d
);
182 throw new IOException("unpaired surrogate: U+" +
183 Integer
.toHexString(c
));
185 else if (c
>= 0xdc00 && c
< 0xe000)
186 throw new IOException("unpaired surrogate: U+" +
187 Integer
.toHexString(c
));
193 buf
[j
++] = (int) b2
[l
];
196 int[] buf2
= new int[j
];
197 System
.arraycopy(buf
, 0, buf2
, 0, j
);