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feat(metadata): edit release tags and render UPC barcodes

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zarzet
2026-08-18 19:29:12 +07:00
parent 290923e88f
commit a7423b7f89
37 changed files with 1162 additions and 32 deletions
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lib/utils/audio_format_utils.dart
+4
View File
@@ -31,6 +31,10 @@ Map<String, dynamic> normalizeScannedAudioMetadata(
normalized['total_discs'] = firstValue('total_discs', 'totalDiscs');
normalized['bit_depth'] = firstValue('bit_depth', 'bitDepth');
normalized['sample_rate'] = firstValue('sample_rate', 'sampleRate');
normalized['album_type'] = firstValue('album_type', 'albumType');
normalized['upc'] = firstValue('upc', 'barcode');
normalized['comment'] = metadata['comment'];
normalized['explicit'] = metadata['explicit'];
normalized['audio_codec'] =
firstValue('audio_codec', 'audioCodec') ?? metadata['format'];
return normalized;
lib/utils/retail_barcode.dart
+260
View File
@@ -0,0 +1,260 @@
class RetailBarcodeData {
final String value;
final String symbology;
final String modules;
final int quietZoneModules;
const RetailBarcodeData({
required this.value,
required this.symbology,
required this.modules,
required this.quietZoneModules,
});
}
const _eanLeftOdd = <String>[
'0001101',
'0011001',
'0010011',
'0111101',
'0100011',
'0110001',
'0101111',
'0111011',
'0110111',
'0001011',
];
const _eanLeftEven = <String>[
'0100111',
'0110011',
'0011011',
'0100001',
'0011101',
'0111001',
'0000101',
'0010001',
'0001001',
'0010111',
];
const _eanRight = <String>[
'1110010',
'1100110',
'1101100',
'1000010',
'1011100',
'1001110',
'1010000',
'1000100',
'1001000',
'1110100',
];
const _ean13Parity = <String>[
'LLLLLL',
'LLGLGG',
'LLGGLG',
'LLGGGL',
'LGLLGG',
'LGGLLG',
'LGGGLL',
'LGLGLG',
'LGLGGL',
'LGGLGL',
];
// Code 128 module widths, including start/check/stop symbols. It is used only
// as an exact-value fallback when a numeric identifier is not a valid UPC-A or
// EAN-13. Valid retail identifiers always use their native symbology.
const _code128Patterns = <String>[
'212222',
'222122',
'222221',
'121223',
'121322',
'131222',
'122213',
'122312',
'132212',
'221213',
'221312',
'231212',
'112232',
'122132',
'122231',
'113222',
'123122',
'123221',
'223211',
'221132',
'221231',
'213212',
'223112',
'312131',
'311222',
'321122',
'321221',
'312212',
'322112',
'322211',
'212123',
'212321',
'232121',
'111323',
'131123',
'131321',
'112313',
'132113',
'132311',
'211313',
'231113',
'231311',
'112133',
'112331',
'132131',
'113123',
'113321',
'133121',
'313121',
'211331',
'231131',
'213113',
'213311',
'213131',
'311123',
'311321',
'331121',
'312113',
'312311',
'332111',
'314111',
'221411',
'431111',
'111224',
'111422',
'121124',
'121421',
'141122',
'141221',
'112214',
'112412',
'122114',
'122411',
'142112',
'142211',
'241211',
'221114',
'413111',
'241112',
'134111',
'111242',
'121142',
'121241',
'114212',
'124112',
'124211',
'411212',
'421112',
'421211',
'212141',
'214121',
'412121',
'111143',
'111341',
'131141',
'114113',
'114311',
'411113',
'411311',
'113141',
'114131',
'311141',
'411131',
'211412',
'211214',
'211232',
'2331112',
];
RetailBarcodeData? encodeRetailBarcode(String rawValue) {
final value = rawValue.replaceAll(RegExp(r'[\s-]+'), '');
if (value.isEmpty || !RegExp(r'^\d+$').hasMatch(value)) return null;
if (value.length == 12 && hasValidGtinCheckDigit(value)) {
return RetailBarcodeData(
value: value,
symbology: 'UPC-A',
modules: _encodeEan13('0$value'),
quietZoneModules: 11,
);
}
if (value.length == 13 && hasValidGtinCheckDigit(value)) {
return RetailBarcodeData(
value: value,
symbology: 'EAN-13',
modules: _encodeEan13(value),
quietZoneModules: 11,
);
}
return RetailBarcodeData(
value: value,
symbology: 'CODE 128',
modules: _encodeCode128B(value),
quietZoneModules: 10,
);
}
bool hasValidGtinCheckDigit(String value) {
if (value.length < 2 || !RegExp(r'^\d+$').hasMatch(value)) return false;
var sum = 0;
var useThree = true;
for (var i = value.length - 2; i >= 0; i--) {
final digit = value.codeUnitAt(i) - 48;
sum += digit * (useThree ? 3 : 1);
useThree = !useThree;
}
final expected = (10 - (sum % 10)) % 10;
return expected == value.codeUnitAt(value.length - 1) - 48;
}
String _encodeEan13(String value) {
final first = value.codeUnitAt(0) - 48;
final parity = _ean13Parity[first];
final out = StringBuffer('101');
for (var i = 1; i <= 6; i++) {
final digit = value.codeUnitAt(i) - 48;
out.write(parity[i - 1] == 'L' ? _eanLeftOdd[digit] : _eanLeftEven[digit]);
}
out.write('01010');
for (var i = 7; i <= 12; i++) {
out.write(_eanRight[value.codeUnitAt(i) - 48]);
}
out.write('101');
return out.toString();
}
String _encodeCode128B(String value) {
const startB = 104;
final codes = <int>[startB];
var checksum = startB;
for (var i = 0; i < value.length; i++) {
final code = value.codeUnitAt(i) - 32;
codes.add(code);
checksum += code * (i + 1);
}
codes
..add(checksum % 103)
..add(106);
final out = StringBuffer();
for (final code in codes) {
final widths = _code128Patterns[code];
for (var i = 0; i < widths.length; i++) {
final width = widths.codeUnitAt(i) - 48;
out.write(List.filled(width, i.isEven ? '1' : '0').join());
}
}
return out.toString();
}