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fix some high level eci parsing

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This commit is contained in:
Henry Schimke
2023-01-29 16:07:37 -06:00
parent f38e294481
commit fb8d534f9e
3 changed files with 97 additions and 83 deletions
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124
src/datamatrix/decoder/decoded_bit_stream_parser.rs
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@@ -121,30 +121,43 @@ pub fn decode(bytes: &[u8]) -> Result<DecoderRXingResult, Exceptions> {
let symbologyModifier;
let mut isECIencoded = false;
loop {
if mode == Mode::ASCII_ENCODE {
mode = decodeAsciiSegment(
&mut bits,
&mut result,
&mut resultTrailer,
&mut fnc1Positions,
)?;
} else {
match mode {
Mode::C40_ENCODE => decodeC40Segment(&mut bits, &mut result, &mut fnc1Positions)?,
Mode::TEXT_ENCODE => decodeTextSegment(&mut bits, &mut result, &mut fnc1Positions)?,
Mode::ANSIX12_ENCODE => decodeAnsiX12Segment(&mut bits, &mut result)?,
Mode::EDIFACT_ENCODE => decodeEdifactSegment(&mut bits, &mut result)?,
Mode::BASE256_ENCODE => {
decodeBase256Segment(&mut bits, &mut result, &mut byteSegments)?
}
Mode::ECI_ENCODE => {
decodeECISegment(&mut bits, &mut result)?;
isECIencoded = true; // ECI detection only, atm continue decoding as ASCII
}
_ => return Err(Exceptions::FormatException(None)),
};
mode = Mode::ASCII_ENCODE;
match mode {
Mode::ASCII_ENCODE => {
mode = decodeAsciiSegment(
&mut bits,
&mut result,
&mut resultTrailer,
&mut fnc1Positions,
)?
}
Mode::C40_ENCODE => {
decodeC40Segment(&mut bits, &mut result, &mut fnc1Positions)?;
mode = Mode::ASCII_ENCODE;
}
Mode::TEXT_ENCODE => {
decodeTextSegment(&mut bits, &mut result, &mut fnc1Positions)?;
mode = Mode::ASCII_ENCODE;
}
Mode::ANSIX12_ENCODE => {
decodeAnsiX12Segment(&mut bits, &mut result)?;
mode = Mode::ASCII_ENCODE;
}
Mode::EDIFACT_ENCODE => {
decodeEdifactSegment(&mut bits, &mut result)?;
mode = Mode::ASCII_ENCODE;
}
Mode::BASE256_ENCODE => {
decodeBase256Segment(&mut bits, &mut result, &mut byteSegments)?;
mode = Mode::ASCII_ENCODE;
}
Mode::ECI_ENCODE => {
decodeECISegment(&mut bits, &mut result)?;
isECIencoded = true; // ECI detection only, atm continue decoding as ASCII
mode = Mode::ASCII_ENCODE;
}
_ => return Err(Exceptions::FormatException(None)),
}
if !(mode != Mode::PAD_ENCODE && bits.available() > 0) {
break;
}
@@ -200,31 +213,29 @@ fn decodeAsciiSegment(
let mut sai = StructuredAppendInfo::default();
loop {
let mut oneByte = bits.readBits(8)?;
if oneByte == 0 {
return Err(Exceptions::FormatException(None));
} else if oneByte <= 128 {
// ASCII data (ASCII value + 1)
if upperShift {
oneByte += 128;
//upperShift = false;
}
result.append_char(char::from_u32(oneByte - 1).unwrap());
return Ok(Mode::ASCII_ENCODE);
} else if oneByte == 129 {
// Pad
return Ok(Mode::PAD_ENCODE);
} else if oneByte <= 229 {
// 2-digit data 00-99 (Numeric Value + 130)
let value = oneByte - 130;
if value < 10 {
// pad with '0' for single digit values
result.append_char('0');
}
//result.append_char(char::from_u32(value).unwrap());
result.append_string(&format!("{value}"));
} else {
match oneByte {
230=> // Latch to C40 encodation
match oneByte {
0 => return Err(Exceptions::FormatException(None)),
1..=128 => {
// ASCII data (ASCII value + 1)
if upperShift {
oneByte += 128;
//upperShift = false;
}
result.append_char(char::from_u32(oneByte - 1).unwrap());
return Ok(Mode::ASCII_ENCODE);
},
129 => return Ok(Mode::PAD_ENCODE), // Pad
129..=229 => {
// 2-digit data 00-99 (Numeric Value + 130)
let value = oneByte - 130;
if value < 10 {
// pad with '0' for single digit values
result.append_char('0');
}
//result.append_char(char::from_u32(value).unwrap());
result.append_string(&format!("{value}"));
},
230=> // Latch to C40 encodation
return Ok(Mode::C40_ENCODE),
231=> // Latch to Base 256 encodation
return Ok(Mode::BASE256_ENCODE),
@@ -237,16 +248,17 @@ fn decodeAsciiSegment(
{fnc1positions.push(result.len());
result.append_char( 29 as char); }// translate as ASCII 29
},
233| // Structured Append
233 => // Structured Append
{
if !firstCodeword // Must be first ISO 16022:2006 5.6.1
{return Err(Exceptions::FormatException(Some("structured append tag must be first code word".to_owned())));}
parse_structured_append(bits, &mut sai)?;
firstFNC1Position = 5;
},
234=> // Reader Programming
// Ignore these symbols for now
//throw ReaderException.getInstance();
{
if !firstCodeword // Must be first ISO 16022:2006 5.6.1
{return Err(Exceptions::FormatException(Some("structured append tag must be first code word".to_owned())));}
parse_structured_append(bits, &mut sai)?;
firstFNC1Position = 5;
},
{},
235=> // Upper Shift (shift to Extended ASCII)
upperShift = true,
236=> {// 05 Macro
@@ -274,7 +286,7 @@ fn decodeAsciiSegment(
return Err(Exceptions::FormatException(None))
}},
}
}
if bits.available() == 0 {
break;
}