##### Coverage Report - org.webmacro.util.NativeAsciiReader

Classes in this File | Line Coverage | Branch Coverage | Complexity
NativeAsciiReader |
0% | 0/30
0% | 0/70
| 11.666666666666666;11.667

1 |  |
     /*
2 |  |
      * Copyright (C) 1998-2000 Semiotek Inc.  All Rights Reserved.
3 |  |
      *
4 |  |
      * Redistribution and use in source and binary forms, with or without
5 |  |
      * modification, are permitted under the terms of either of the following
6 |  |
      * Open Source licenses:
7 |  |
      *
8 |  |
      * The GNU General Public License, version 2, or any later version, as
9 |  |
      * published by the Free Software Foundation
10 |  |
      * (http://www.fsf.org/copyleft/gpl.html);
11 |  |
      *
12 |  |
      *  or
13 |  |
      *
14 |  |
      * The Semiotek Public License (http://webmacro.org/LICENSE.)
15 |  |
      *
16 |  |
      * This software is provided "as is", with NO WARRANTY, not even the
17 |  |
      * implied warranties of fitness to purpose, or merchantability. You
18 |  |
      * assume all risks and liabilities associated with its use.
19 |  |
      *
20 |  |
      * See www.webmacro.org for more information on the WebMacro project.
21 |  |
      */
22 |  |
23 |  |
     package org.webmacro.util;
24 |  |
25 |  |
     import java.io.BufferedReader;
26 |  |
     import java.io.IOException;
27 |  |
     import java.io.Reader;
28 |  |
29 |  |
     /**
30 |  |
      * Reads a file that has been encoded with Java's unicode escape syntax,
31 |  |
      * typically converted with native2ascii.
32 |  |
      *
33 |  |
      * All character sequences like \\uxxxx will be converted to a single unicode
34 |  |
      * character.  Other '\' escaped characters will be passed unchanged. An
35 |  |
      * error will be thrown if the \\u is not followed by 4 hexadecimal characters
36 |  |
      *
37 |  |
      *
38 |  |
      */
39 |  |
     public class NativeAsciiReader extends BufferedReader
40 |  |
     {
41 |  |
42 |  |
     /*
43 |  |
         The constructors simply echo those in the super-class
44 |  |
     */
45 | 0 |
         private static int defaultCharBufferSize = 8192;
46 |  |
         public static final String RCS = "$Id: org.webmacro.util.NativeAsciiReader.html,v 1.1 2010/03/04 23:00:06 timp Exp $";
47 |  |
48 |  |
         public NativeAsciiReader (Reader in, int sz)
49 |  |
         {
50 | 0 |
             super(in, sz);
51 | 0 |
         }
52 |  |
53 |  |
         public NativeAsciiReader (Reader in)
54 |  |
         {
55 | 0 |
             this(in, defaultCharBufferSize);
56 | 0 |
         }
57 |  |
58 |  |
         /**
59 |  |
          *  Read a sequence of characters into the given buffer.   Since we're
60 |  |
          *  extending BufferedReader, it is efficient enough to read one character
61 |  |
          *  at a time
62 |  |
          */
63 |  |
         public int read (char cbuf[], int off, int len) throws IOException
64 |  |
         {
65 | 0 |
             int i = 0;
66 | 0 |
             while (i < len)
67 |  |
             {
68 | 0 |
                 int c = read();
69 | 0 |
                 if (i == 0 && c == -1) return -1;
70 | 0 |
                 if (c == -1) return i;
71 | 0 |
                 if (c == '\\')
72 |  |
                 {
73 | 0 |
                     mark(1);
74 | 0 |
                     if (read() != 'u')
75 |  |
                     {
76 | 0 |
                         reset();
77 |  |
                     }
78 | 0 |
                     int value = 0;
79 |  |
                     int a;
80 |  |
81 | 0 |
                     for (int j = 0; j < 4; j++)
82 |  |
                     {
83 | 0 |
                         a = read();
84 | 0 |
                         switch (a)
85 |  |
                         {
86 |  |
                             case '0':
87 |  |
                             case '1':
88 |  |
                             case '2':
89 |  |
                             case '3':
90 |  |
                             case '4':
91 |  |
                             case '5':
92 |  |
                             case '6':
93 |  |
                             case '7':
94 |  |
                             case '8':
95 |  |
                             case '9':
96 | 0 |
                                 value = (value << 4) + a - '0';
97 | 0 |
                                 break;
98 |  |
                             case 'a':
99 |  |
                             case 'b':
100 |  |
                             case 'c':
101 |  |
                             case 'd':
102 |  |
                             case 'e':
103 |  |
                             case 'f':
104 | 0 |
                                 value = (value << 4) + 10 + a - 'a';
105 | 0 |
                                 break;
106 |  |
                             case 'A':
107 |  |
                             case 'B':
108 |  |
                             case 'C':
109 |  |
                             case 'D':
110 |  |
                             case 'E':
111 |  |
                             case 'F':
112 | 0 |
                                 value = (value << 4) + 10 + a - 'A';
113 | 0 |
                                 break;
114 |  |
                             default:
115 | 0 |
                                 throw new IllegalArgumentException(
116 |  |
                                         "Malformed \\uxxxx encoding.");
117 |  |
                         }
118 |  |
                     }
119 | 0 |
                     c = (char) value;
120 |  |
                 }
121 | 0 |
                 cbuf[i + off] = (char) c;
122 | 0 |
                 i++;
123 | 0 |
             }
124 | 0 |
             return i;
125 |  |
         }
126 |  |
127 |  |
     }