KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > w3c > tidy > StreamIn


1 /*
2  * @(#)StreamIn.java 1.11 2000/08/16
3  *
4  */
5
6 package org.w3c.tidy;
7
8 /**
9  *
10  * Input Stream
11  *
12  * (c) 1998-2000 (W3C) MIT, INRIA, Keio University
13  * Derived from <a HREF="http://www.w3.org/People/Raggett/tidy">
14  * HTML Tidy Release 4 Aug 2000</a>
15  *
16  * @author Dave Raggett <dsr@w3.org>
17  * @author Andy Quick <ac.quick@sympatico.ca> (translation to Java)
18  * @version 1.0, 1999/05/22
19  * @version 1.0.1, 1999/05/29
20  * @version 1.1, 1999/06/18 Java Bean
21  * @version 1.2, 1999/07/10 Tidy Release 7 Jul 1999
22  * @version 1.3, 1999/07/30 Tidy Release 26 Jul 1999
23  * @version 1.4, 1999/09/04 DOM support
24  * @version 1.5, 1999/10/23 Tidy Release 27 Sep 1999
25  * @version 1.6, 1999/11/01 Tidy Release 22 Oct 1999
26  * @version 1.7, 1999/12/06 Tidy Release 30 Nov 1999
27  * @version 1.8, 2000/01/22 Tidy Release 13 Jan 2000
28  * @version 1.9, 2000/06/03 Tidy Release 30 Apr 2000
29  * @version 1.10, 2000/07/22 Tidy Release 8 Jul 2000
30  * @version 1.11, 2000/08/16 Tidy Release 4 Aug 2000
31  */
32
33 import java.io.InputStream JavaDoc;
34
35 public abstract class StreamIn {
36
37     public static final int EndOfStream = -1; // EOF
38
39     /* states for ISO 2022
40
41      A document in ISO-2022 based encoding uses some ESC sequences called
42      "designator" to switch character sets. The designators defined and
43      used in ISO-2022-JP are:
44
45         "ESC" + "(" + ? for ISO646 variants
46
47         "ESC" + "$" + ? and
48         "ESC" + "$" + "(" + ? for multibyte character sets
49     */
50
51     public static final int FSM_ASCII = 0;
52     public static final int FSM_ESC = 1;
53     public static final int FSM_ESCD = 2;
54     public static final int FSM_ESCDP = 3;
55     public static final int FSM_ESCP = 4;
56     public static final int FSM_NONASCII = 5;
57
58     /* non-raw input is cleaned up*/
59     public int state; /* FSM for ISO2022 */
60     public boolean pushed;
61     public int c;
62     public int tabs;
63     public int tabsize;
64     public int lastcol;
65     public int curcol;
66     public int curline;
67     public int encoding;
68     public InputStream JavaDoc stream;
69     public boolean endOfStream;
70     public Object JavaDoc lexer; /* needed for error reporting */
71
72     /* read char from stream */
73     public abstract int readCharFromStream();
74
75     public abstract int readChar();
76
77     public abstract void ungetChar(int c);
78
79     public abstract boolean isEndOfStream();
80
81 }
82
Popular Tags