1static FORWARD_TABLE: &'static [u16] = &[
13 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142,
14 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157,
15 158, 159, 160, 7682, 7683, 163, 266, 267, 7690, 167, 7808, 169, 7810, 7691,
16 7922, 173, 174, 376, 7710, 7711, 288, 289, 7744, 7745, 182, 7766, 7809,
17 7767, 7811, 7776, 7923, 7812, 7813, 7777, 192, 193, 194, 195, 196, 197,
18 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 372, 209, 210, 211, 212,
19 213, 214, 7786, 216, 217, 218, 219, 220, 221, 374, 223, 224, 225, 226, 227,
20 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 373, 241, 242,
21 243, 244, 245, 246, 7787, 248, 249, 250, 251, 252, 253, 375, 255,
22];
23
24#[inline]
26pub fn forward(code: u8) -> u16 {
27 FORWARD_TABLE[(code - 0x80) as usize]
28}
29
30static BACKWARD_TABLE_LOWER: &'static [u8] = &[
31 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
32 0, 0, 0, 0, 0, 0, 0, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138,
33 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153,
34 154, 155, 156, 157, 158, 159, 160, 0, 0, 163, 0, 0, 0, 167, 0, 169, 0, 0,
35 0, 173, 174, 0, 0, 0, 0, 0, 0, 0, 182, 0, 0, 0, 0, 0, 0, 0, 0, 0, 192, 193,
36 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 0,
37 209, 210, 211, 212, 213, 214, 0, 216, 217, 218, 219, 220, 221, 0, 223, 224,
38 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239,
39 0, 241, 242, 243, 244, 245, 246, 0, 248, 249, 250, 251, 252, 253, 0, 255,
40 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 164, 165, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
41 0, 0, 0, 0, 0, 0, 0, 0, 178, 179, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
42 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
43 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 208, 240, 222, 254, 175, 0, 0, 0, 0, 0, 0,
44 0, 0, 0, 161, 162, 0, 0, 0, 0, 0, 0, 166, 171, 0, 0, 0, 0, 0, 0, 0, 0, 0,
45 0, 0, 0, 0, 0, 0, 0, 0, 0, 176, 177, 180, 181, 0, 0, 0, 0, 0, 0, 0, 0, 0,
46 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 183, 185, 0, 0, 0, 0, 0, 0, 0, 0, 187,
47 191, 0, 0, 0, 0, 0, 0, 0, 0, 215, 247, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
48 0, 0, 0, 0, 0, 0, 0, 0, 168, 184, 170, 186, 189, 190, 0, 0, 0, 0, 0, 0, 0,
49 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
50 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 172, 188, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
51 0, 0,
52];
53
54static BACKWARD_TABLE_UPPER: &'static [u16] = &[
55 0, 0, 0, 0, 32, 64, 96, 128, 160, 192, 0, 224, 0, 0, 0, 0, 0, 0, 0, 0, 0,
56 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
57 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
58 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
59 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
60 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
61 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
62 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
63 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
64 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 256, 0, 288, 320,
65 352, 0, 0, 384,
66];
67
68#[inline]
70pub fn backward(code: u32) -> u8 {
71 let offset = (code >> 5) as usize;
72 let offset = if offset < 248 {BACKWARD_TABLE_UPPER[offset] as usize} else {0};
73 BACKWARD_TABLE_LOWER[offset + ((code & 31) as usize)]
74}
75
76#[cfg(test)]
77single_byte_tests!(
78 mod = iso_8859_14
79);