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decoding: treat mis-transcribed z or o (2 or 0) generously. #6

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decoding: treat mis-transcribed z or o (2 or 0) generously. #6

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8 changes: 8 additions & 0 deletions src/decode_impl.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -270,6 +270,14 @@ mod tests {
buffer.clear();
decode(test.encoded, &mut buffer, test.bits).unwrap();
assert_eq!(&buffer[..], test.unencoded);
buffer = Vec::new();
decode(test.encoded.replace("z", "2").as_str(), &mut buffer, test.bits).unwrap();
assert_eq!(&buffer[..], test.unencoded,
"failed to decode when 2 replaces z: {} (got: {:?})", test.encoded, buffer);
buffer = Vec::new();
decode(test.encoded.replace("o", "0").as_str(), &mut buffer, test.bits).unwrap();
assert_eq!(&buffer[..], test.unencoded,
"failed to decode when 0 replaces o: {} (got: {:?})", test.encoded, buffer);
}
}

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8 changes: 5 additions & 3 deletions src/tables.rs
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Original file line number Diff line number Diff line change
@@ -1,9 +1,11 @@
// Maps from character code to their value in the z-base-32 scheme
// Table starts from character code 49 ('1')
pub const CHARACTER_MIN_VALUE: u8 = 49;
// Table starts from character code 48 ('0')
pub const CHARACTER_MIN_VALUE: u8 = 48;
pub const CHARACTER_TO_QUINTET: &'static [u8] = &[
16, // '0' (misread of 'O')
18, // '1'
255, 25, // '3'
23, // '2' (misread of 'Z')
25, // '3'
26, // '4'
27, // '5'
30, // '6'
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