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1 package gnu.jemacs.lang;
2 import gnu.kawa.functions.DisplayFormat;
3 import gnu.lists.Consumer;
4
5 public class Print extends DisplayFormat
6 {
7 public Print (boolean readable)
8 {
9 super(readable, 'E');
10 }
11
12 public static String  escapeChar(int ch)
13 {
14 StringBuffer sbuf = new StringBuffer ();
15 sbuf.append('?');
16 if (ch < ' ')
17 {
18 sbuf.append('\\');
19 switch (ch)
20 {
21 case '\t': sbuf.append('t'); break;
22 case '\n': sbuf.append('n'); break;
23 case '\r': sbuf.append('r'); break;
24 default:
25 sbuf.append('^');
26 sbuf.append((char) (ch + 64));
27 if ((ch + 64) == '\\')
28 sbuf.append('\\');
29 }
30 }
31 else if (ch < 127)
32 {
33
34 switch (ch)
35 {
36 case ' ':
37 case '"':
38 case '#':
39 case '\'':
40 case '(':
41 case ')':
42 case ',':
43 case '.':
44 case ';':
45 case '?':
46 case '[':
47 case '\\':
48 case ']':
49 case '`':
50 sbuf.append('\\');
51 }
52 sbuf.append((char) ch);
53 }
54 else if (ch == 127)
55 sbuf.append("\\^?");
56 else
57 {
58 if (ch < 160)
59 sbuf.append("\\^");
60 sbuf.append(ch);
61 }
62 return sbuf.toString();
63 }
64
65 public void write (int v, Consumer out)
66 {
67 if (getReadableOutput ())
68 write(Print.escapeChar(v), out);
69 else
70 out.write(v);
71 }
72
73 }
74 |
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