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Use thiserror for error handling with less boilerplate

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This commit is contained in:
Steve Cook
2023-02-20 09:41:28 -05:00
parent 01e4f4a126
commit f8b29f37db
135 changed files with 868 additions and 905 deletions
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44
src/oned/code_93_reader.rs
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@@ -66,7 +66,7 @@ impl OneDReader for Code93Reader {
one_d_reader::recordPattern(row, nextStart, &mut theCounters)?;
let pattern = Self::toPattern(&theCounters);
if pattern < 0 {
return Err(Exceptions::notFound);
return Err(Exceptions::NOT_FOUND);
}
decodedChar = Self::patternToChar(pattern as u32)?;
self.decodeRowRXingResult.push(decodedChar);
@@ -95,12 +95,12 @@ impl OneDReader for Code93Reader {
// Should be at least one more black module
if nextStart == end || !row.get(nextStart) {
return Err(Exceptions::notFound);
return Err(Exceptions::NOT_FOUND);
}
if self.decodeRowRXingResult.chars().count() < 2 {
// false positive -- need at least 2 checksum digits
return Err(Exceptions::notFound);
return Err(Exceptions::NOT_FOUND);
}
Self::checkChecksums(&self.decodeRowRXingResult)?;
@@ -194,7 +194,7 @@ impl Code93Reader {
isWhite = !isWhite;
}
}
Err(Exceptions::notFound)
Err(Exceptions::NOT_FOUND)
}
fn toPattern(counters: &[u32; 6]) -> i32 {
@@ -224,7 +224,7 @@ impl Code93Reader {
return Ok(Self::ALPHABET[i]);
}
}
Err(Exceptions::notFound)
Err(Exceptions::NOT_FOUND)
}
fn decodeExtended(encoded: &str) -> Result<String> {
@@ -234,52 +234,52 @@ impl Code93Reader {
while i < length {
// for i in 0..length {
// for (int i = 0; i < length; i++) {
let c = encoded.chars().nth(i).ok_or(Exceptions::indexOutOfBounds)?;
let c = encoded.chars().nth(i).ok_or(Exceptions::INDEX_OUT_OF_BOUNDS)?;
if ('a'..='d').contains(&c) {
if i >= length - 1 {
return Err(Exceptions::format);
return Err(Exceptions::FORMAT);
}
let next = encoded
.chars()
.nth(i + 1)
.ok_or(Exceptions::indexOutOfBounds)?;
.ok_or(Exceptions::INDEX_OUT_OF_BOUNDS)?;
let mut decodedChar = '\0';
match c {
'd' => {
// +A to +Z map to a to z
if ('A'..='Z').contains(&next) {
decodedChar =
char::from_u32(next as u32 + 32).ok_or(Exceptions::parse)?;
char::from_u32(next as u32 + 32).ok_or(Exceptions::PARSE)?;
} else {
return Err(Exceptions::format);
return Err(Exceptions::FORMAT);
}
}
'a' => {
// $A to $Z map to control codes SH to SB
if ('A'..='Z').contains(&next) {
decodedChar =
char::from_u32(next as u32 - 64).ok_or(Exceptions::parse)?;
char::from_u32(next as u32 - 64).ok_or(Exceptions::PARSE)?;
} else {
return Err(Exceptions::format);
return Err(Exceptions::FORMAT);
}
}
'b' => {
if ('A'..='E').contains(&next) {
// %A to %E map to control codes ESC to USep
decodedChar =
char::from_u32(next as u32 - 38).ok_or(Exceptions::parse)?;
char::from_u32(next as u32 - 38).ok_or(Exceptions::PARSE)?;
} else if ('F'..='J').contains(&next) {
// %F to %J map to ; < = > ?
decodedChar =
char::from_u32(next as u32 - 11).ok_or(Exceptions::parse)?;
char::from_u32(next as u32 - 11).ok_or(Exceptions::PARSE)?;
} else if ('K'..='O').contains(&next) {
// %K to %O map to [ \ ] ^ _
decodedChar =
char::from_u32(next as u32 + 16).ok_or(Exceptions::parse)?;
char::from_u32(next as u32 + 16).ok_or(Exceptions::PARSE)?;
} else if ('P'..='T').contains(&next) {
// %P to %T map to { | } ~ DEL
decodedChar =
char::from_u32(next as u32 + 43).ok_or(Exceptions::parse)?;
char::from_u32(next as u32 + 43).ok_or(Exceptions::PARSE)?;
} else if next == 'U' {
// %U map to NUL
decodedChar = '\0';
@@ -293,18 +293,18 @@ impl Code93Reader {
// %X to %Z all map to DEL (127)
decodedChar = 127 as char;
} else {
return Err(Exceptions::format);
return Err(Exceptions::FORMAT);
}
}
'c' => {
// /A to /O map to ! to , and /Z maps to :
if ('A'..='O').contains(&next) {
decodedChar =
char::from_u32(next as u32 - 32).ok_or(Exceptions::parse)?;
char::from_u32(next as u32 - 32).ok_or(Exceptions::PARSE)?;
} else if next == 'Z' {
decodedChar = ':';
} else {
return Err(Exceptions::format);
return Err(Exceptions::FORMAT);
}
}
_ => {}
@@ -334,7 +334,7 @@ impl Code93Reader {
for i in (0..checkPosition).rev() {
total += weight
* Self::ALPHABET_STRING
.find(result.chars().nth(i).ok_or(Exceptions::indexOutOfBounds)?)
.find(result.chars().nth(i).ok_or(Exceptions::INDEX_OUT_OF_BOUNDS)?)
.map_or_else(|| -1_i32, |v| v as i32);
weight += 1;
if weight > weightMax as i32 {
@@ -344,10 +344,10 @@ impl Code93Reader {
if result
.chars()
.nth(checkPosition)
.ok_or(Exceptions::indexOutOfBounds)?
.ok_or(Exceptions::INDEX_OUT_OF_BOUNDS)?
!= Self::ALPHABET[(total as usize) % 47]
{
Err(Exceptions::checksum)
Err(Exceptions::CHECKSUM)
} else {
Ok(())
}