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1
28
29 package org.jruby.util;
30
31 import java.nio.charset.Charset  ;
32 import java.nio.charset.CharsetDecoder ;
33 import java.nio.charset.CharsetEncoder ;
34 import java.util.regex.Pattern ;
35 import org.jruby.Ruby;
36 import org.jruby.charset.PlainCharset;
37 import org.jruby.runtime.builtin.IRubyObject;
38
39 public class KCode {
40 public static final KCode NIL = new KCode(null);
41 public static final KCode NONE = new KCode("NONE");
42 public static final KCode UTF8 = new KCode("UTF8");
43 public static final KCode SJIS = new KCode("SJIS");
44 public static final KCode EUC = new KCode("EUC");
45
46 private String kcode;
47
48 private KCode(String kcode) {
49 this.kcode = kcode;
50 }
51
52 public static KCode create(Ruby runtime, String lang) {
53 if(lang == null) {
54 return NIL;
55 }
56
57 switch(lang.charAt(0)) {
58 case 'E':
59 case 'e':
60 runtime.getWarnings().warn("JRuby supports only Unicode regexp.");
61 return EUC;
62 case 'S':
63 case 's':
64 runtime.getWarnings().warn("JRuby supports only Unicode regexp.");
65 return SJIS;
66 case 'U':
67 case 'u':
68 return UTF8;
69 case 'N':
70 case 'n':
71 case 'A':
72 case 'a':
73 return NONE;
74 }
75 return NIL;
76 }
77
78 public IRubyObject kcode(Ruby runtime) {
79 if (kcode == null) {
80 return runtime.getNil();
81 }
82 return runtime.newString(kcode);
83 }
84
85 public CharsetDecoder decoder() {
86 if (this == UTF8) {
87 return Charset.forName("UTF-8").newDecoder();
88 }
89
90 return new PlainCharset().newDecoder();
91 }
92
93 public CharsetEncoder encoder() {
94 if (this == UTF8) {
95 return Charset.forName("UTF-8").newEncoder();
96 }
97
98 return new PlainCharset().newEncoder();
99 }
100
101 public int flags() {
102 int flags = 0;
103 if (this == UTF8) {
104 flags |= Pattern.UNICODE_CASE;
105 }
106 flags |= Pattern.UNIX_LINES;
107
108 return flags;
109 }
110 }
111
112 |
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