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1 package com.thaiopensource.datatype.xsd;
2
3 import org.relaxng.datatype.ValidationContext;
4
5 class HexBinaryDatatype extends BinaryDatatype {
6 static private final int INVALID = -1;
7 static private final int WHITESPACE = -2;
8
9 boolean lexicallyAllows(String  str) {
10 int len = str.length();
11 int i = 0;
12 while (i < len && weight(str.charAt(i)) == WHITESPACE)
13 i++;
14 while (i + 1 < len && weight(str.charAt(i)) >= 0 && weight(str.charAt(i + 1)) >= 0)
15 i += 2;
16 while (i < len && weight(str.charAt(i)) == WHITESPACE)
17 i++;
18 return i == len;
19 }
20
21 Object getValue(String str, ValidationContext vc) {
22 int len = str.length();
23 int start = 0;
24 while (start < len && weight(str.charAt(start)) == WHITESPACE)
25 start++;
26 int end = len;
27 while (end > start && weight(str.charAt(end - 1)) == WHITESPACE)
28 end--;
29 byte[] value = new byte[(end - start) >> 1];
30 int j = 0;
31 for (int i = start; i < end; i += 2, j++)
32 value[j] = (byte)((weight(str.charAt(i)) << 4) | weight(str.charAt(i + 1)));
33 return value;
34 }
35
36 static private int weight(char c) {
37 switch (c) {
38 case '0': case '1': case '2': case '3': case '4':
39 case '5': case '6': case '7': case '8': case '9':
40 return c - '0';
41 case 'A': case 'B': case 'C':
42 case 'D': case 'E': case 'F':
43 return c + (10 - 'A');
44 case 'a': case 'b': case 'c':
45 case 'd': case 'e': case 'f':
46 return c + (10 - 'a');
47 case ' ': case '\n': case '\r': case '\t':
48 return WHITESPACE;
49 }
50 return INVALID;
51 }
52
53 }
54 |
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