ISOGreekWriter


1   /* Copyright 2002, 2003 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.Writer  ;
25  
26  /**
27   * <p>
28   *   ISO 8859-7, ASCII plus Greek
29   * </p>
30   * 
31   * @author Elliotte Rusty Harold
32   * @version 1.0
33   *
34   */
35  class ISOGreekWriter extends TextWriter {
36  
37      ISOGreekWriter(Writer   out, String   encoding) {
38          super(out, encoding);
39      }
40  
41      /**
42       * @see nu.xom.TextWriter#needsEscaping(char)
43       */
44      boolean needsEscaping(char c) {
45          if (c <= 0xA0) return false;        
46          switch (c) { // Greek
47              case 0x0384: return false; // GREEK TONOS
48              case 0x0385: return false; // GREEK DIALYTIKA TONOS
49              case 0x0386: return false; // GREEK CAPITAL LETTER ALPHA WITH TONOS
50              case 0x0387: return true;  // place holder to enable table lookup
51              case 0x0388: return false; // GREEK CAPITAL LETTER EPSILON WITH TONOS
52              case 0x0389: return false; // GREEK CAPITAL LETTER ETA WITH TONOS
53              case 0x038A: return false; // GREEK CAPITAL LETTER IOTA WITH TONOS
54              case 0x038B: return true;  // place holder to enable table lookup
55              case 0x038C: return false; // GREEK CAPITAL LETTER OMICRON WITH TONOS
56              case 0x038D: return true;  // place holder to enable table lookup
57              case 0x038E: return false; // GREEK CAPITAL LETTER UPSILON WITH TONOS
58              case 0x038F: return false; // GREEK CAPITAL LETTER OMEGA WITH TONOS
59              case 0x0390: return false; // GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS
60              case 0x0391: return false; // GREEK CAPITAL LETTER ALPHA
61              case 0x0392: return false; // GREEK CAPITAL LETTER BETA
62              case 0x0393: return false; // GREEK CAPITAL LETTER GAMMA
63              case 0x0394: return false; // GREEK CAPITAL LETTER DELTA
64              case 0x0395: return false; // GREEK CAPITAL LETTER EPSILON
65              case 0x0396: return false; // GREEK CAPITAL LETTER ZETA
66              case 0x0397: return false; // GREEK CAPITAL LETTER ETA
67              case 0x0398: return false; // GREEK CAPITAL LETTER THETA
68              case 0x0399: return false; // GREEK CAPITAL LETTER IOTA
69              case 0x039A: return false; // GREEK CAPITAL LETTER KAPPA
70              case 0x039B: return false; // GREEK CAPITAL LETTER LAMDA
71              case 0x039C: return false; // GREEK CAPITAL LETTER MU
72              case 0x039D: return false; // GREEK CAPITAL LETTER NU
73              case 0x039E: return false; // GREEK CAPITAL LETTER XI
74              case 0x039F: return false; // GREEK CAPITAL LETTER OMICRON
75              case 0x03A0: return false; // GREEK CAPITAL LETTER PI
76              case 0x03A1: return false; // GREEK CAPITAL LETTER RHO
77              case 0x03A2: return true;  // place holder to enable table lookup
78              case 0x03A3: return false; // GREEK CAPITAL LETTER SIGMA
79              case 0x03A4: return false; // GREEK CAPITAL LETTER TAU
80              case 0x03A5: return false; // GREEK CAPITAL LETTER UPSILON
81              case 0x03A6: return false; // GREEK CAPITAL LETTER PHI
82              case 0x03A7: return false; // GREEK CAPITAL LETTER CHI
83              case 0x03A8: return false; // GREEK CAPITAL LETTER PSI
84              case 0x03A9: return false; // GREEK CAPITAL LETTER OMEGA
85              case 0x03AA: return false; // GREEK CAPITAL LETTER IOTA WITH DIALYTIKA
86              case 0x03AB: return false; // GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA
87              case 0x03AC: return false; // GREEK SMALL LETTER ALPHA WITH TONOS
88              case 0x03AD: return false; // GREEK SMALL LETTER EPSILON WITH TONOS
89              case 0x03AE: return false; // GREEK SMALL LETTER ETA WITH TONOS
90              case 0x03AF: return false; // GREEK SMALL LETTER IOTA WITH TONOS
91              case 0x03B0: return false; // GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS
92              case 0x03B1: return false; // GREEK SMALL LETTER ALPHA
93              case 0x03B2: return false; // GREEK SMALL LETTER BETA
94              case 0x03B3: return false; // GREEK SMALL LETTER GAMMA
95              case 0x03B4: return false; // GREEK SMALL LETTER DELTA
96              case 0x03B5: return false; // GREEK SMALL LETTER EPSILON
97              case 0x03B6: return false; // GREEK SMALL LETTER ZETA
98              case 0x03B7: return false; // GREEK SMALL LETTER ETA
99              case 0x03B8: return false; // GREEK SMALL LETTER THETA
100             case 0x03B9: return false; // GREEK SMALL LETTER IOTA
101             case 0x03BA: return false; // GREEK SMALL LETTER KAPPA
102             case 0x03BB: return false; // GREEK SMALL LETTER LAMDA
103             case 0x03BC: return false; // GREEK SMALL LETTER MU
104             case 0x03BD: return false; // GREEK SMALL LETTER NU
105             case 0x03BE: return false; // GREEK SMALL LETTER XI
106             case 0x03BF: return false; // GREEK SMALL LETTER OMICRON
107             case 0x03C0: return false; // GREEK SMALL LETTER PI
108             case 0x03C1: return false; // GREEK SMALL LETTER RHO
109             case 0x03C2: return false; // GREEK SMALL LETTER FINAL SIGMA
110             case 0x03C3: return false; // GREEK SMALL LETTER SIGMA
111             case 0x03C4: return false; // GREEK SMALL LETTER TAU
112             case 0x03C5: return false; // GREEK SMALL LETTER UPSILON
113             case 0x03C6: return false; // GREEK SMALL LETTER PHI
114             case 0x03C7: return false; // GREEK SMALL LETTER CHI
115             case 0x03C8: return false; // GREEK SMALL LETTER PSI
116             case 0x03C9: return false; // GREEK SMALL LETTER OMEGA
117             case 0x03CA: return false; // GREEK SMALL LETTER IOTA WITH DIALYTIKA
118             case 0x03CB: return false; // GREEK SMALL LETTER UPSILON WITH DIALYTIKA
119             case 0x03CC: return false; // GREEK SMALL LETTER OMICRON WITH TONOS
120             case 0x03CD: return false; // GREEK SMALL LETTER UPSILON WITH TONOS
121             case 0x03CE: return false; // GREEK SMALL LETTER OMEGA WITH TONOS
122         }
123         switch (c) { // overlap with Latin-1
124             case 0x00A3: return false; // POUND SIGN
125             case 0x00A4: return true;  // place holder to enable table lookup
126             case 0x00A5: return true;  // place holder to enable table lookup
127             case 0x00A6: return false; // BROKEN BAR
128             case 0x00A7: return false; // SECTION SIGN
129             case 0x00A8: return false; // DIAERESIS
130             case 0x00A9: return false; // COPYRIGHT SIGN
131             case 0x00AA: return true;  // place holder to enable table lookup
132             case 0x00AB: return false; // LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
133             case 0x00AC: return false; // NOT SIGN
134             case 0x00AD: return false; // SOFT HYPHEN
135             case 0x00AE: return true;  // place holder to enable table lookup
136             case 0x00AF: return true;  // place holder to enable table lookup
137             case 0x00B0: return false; // DEGREE SIGN
138             case 0x00B1: return false; // PLUS-MINUS SIGN
139             case 0x00B2: return false; // SUPERSCRIPT TWO
140             case 0x00B3: return false; // SUPERSCRIPT THREE
141             case 0x00B4: return true;  // place holder to enable table lookup
142             case 0x00B5: return true;  // place holder to enable table lookup
143             case 0x00B6: return true;  // place holder to enable table lookup
144             case 0x00B7: return false; // MIDDLE DOT
145             case 0x00B8: return true;  // place holder to enable table lookup
146             case 0x00B9: return true;  // place holder to enable table lookup
147             case 0x00BA: return true;  // place holder to enable table lookup
148             case 0x00BB: return false; // RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
149             case 0x00BC: return true;  // place holder to enable table lookup
150             case 0x00BD: return false; // VULGAR FRACTION ONE HALF
151         }
152         switch (c) { // assorted characters
153             case 0x2015: return false; // HORIZONTAL BAR
154             // A bug in Java 1.4 and 1.3 prevents a LEFT and RIGHT 
155             // SINGLE QUOTATION MARKs
156             // from being correctly output
157             // as the actual character in this encoding
158             // even though it does exist in the 
159             // ISO-8859-7 character set.
160             // case 0x2018: return false; // LEFT SINGLE QUOTATION MARK
161             // case 0x2019: return false; // RIGHT SINGLE QUOTATION MARK        
162         }
163         return true;
164     }
165 
166 }
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