01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: /**
19: * @author Nikolay A. Kuznetsov
20: * @version $Revision: 1.3.2.2 $
21: */package java.util.regex;
22:
23: /**
24: * Line terminator factory
25: *
26: * @author Nikolay A. Kuznetsov
27: * @version $Revision: 1.3.2.2 $
28: */
29: abstract class AbstractLineTerminator {
30: static AbstractLineTerminator unixLT = null;
31:
32: static AbstractLineTerminator unicodeLT = null;
33:
34: public abstract boolean isLineTerminator(int ch);
35:
36: public abstract boolean isAfterLineTerminator(int ch1, int ch2);
37:
38: public static AbstractLineTerminator getInstance(int flag) {
39: if ((flag & Pattern.UNIX_LINES) != 0) {
40: if (unixLT != null)
41: return unixLT;
42: unixLT = new AbstractLineTerminator() {
43: public boolean isLineTerminator(int ch) {
44: return ch == '\n';
45: }
46:
47: public boolean isAfterLineTerminator(int ch, int ch2) {
48: return ch == '\n';
49: }
50: };
51: return unixLT;
52: } else {
53: if (unicodeLT != null)
54: return unicodeLT;
55: unicodeLT = new AbstractLineTerminator() {
56: public boolean isLineTerminator(int ch) {
57: return (ch == '\n' || ch == '\r' || ch == '\u0085' || (ch | 1) == '\u2029');
58: }
59:
60: public boolean isAfterLineTerminator(int ch, int ch2) {
61: return (ch == '\n' || ch == '\u0085' || (ch | 1) == '\u2029')
62: || (ch == '\r' && ch2 != '\n');
63: }
64: };
65: return unicodeLT;
66: }
67: }
68: }
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