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codabar_writer + test

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This commit is contained in:
Henry Schimke
2022-12-10 12:46:03 -06:00
parent da16a67c04
commit b366e59e28
10 changed files with 521 additions and 368 deletions
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12
src/oned/coda_bar_reader.rs
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@@ -174,11 +174,11 @@ impl CodaBarReader {
// These values are critical for determining how permissive the decoding
// will be. All stripe sizes must be within the window these define, as
// compared to the average stripe size.
const MAX_ACCEPTABLE: f32 = 2.0;
const PADDING: f32 = 1.5;
pub const MAX_ACCEPTABLE: f32 = 2.0;
pub const PADDING: f32 = 1.5;
// const ALPHABET_STRING : &str= "0123456789-$:/.+ABCD";
const ALPHABET: [char; 20] = [
pub const ALPHABET: [char; 20] = [
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '$', ':', '/', '.', '+', 'A', 'B',
'C', 'D',
];
@@ -187,7 +187,7 @@ impl CodaBarReader {
* These represent the encodings of characters, as patterns of wide and narrow bars. The 7 least-significant bits of
* each int correspond to the pattern of wide and narrow, with 1s representing "wide" and 0s representing narrow.
*/
const CHARACTER_ENCODINGS: [u32; 20] = [
pub const CHARACTER_ENCODINGS: [u32; 20] = [
0x003, 0x006, 0x009, 0x060, 0x012, 0x042, 0x021, 0x024, 0x030, 0x048, // 0-9
0x00c, 0x018, 0x045, 0x051, 0x054, 0x015, 0x01A, 0x029, 0x00B, 0x00E, // -$:/.+ABCD
];
@@ -195,10 +195,10 @@ impl CodaBarReader {
// minimal number of characters that should be present (including start and stop characters)
// under normal circumstances this should be set to 3, but can be set higher
// as a last-ditch attempt to reduce false positives.
const MIN_CHARACTER_LENGTH: u32 = 3;
pub const MIN_CHARACTER_LENGTH: u32 = 3;
// official start and end patterns
const STARTEND_ENCODING: [char; 4] = ['A', 'B', 'C', 'D'];
pub const STARTEND_ENCODING: [char; 4] = ['A', 'B', 'C', 'D'];
// some Codabar generator allow the Codabar string to be closed by every
// character. This will cause lots of false positives!