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parse more date formats

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This commit is contained in:
Thibault Deckers 2022-07-10 16:41:06 +02:00
parent 80409b1d79
commit d067c457be
4 changed files with 29 additions and 9 deletions
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5
lib/model/video/metadata.dart
View file

@ -23,7 +23,7 @@ import 'package:flutter/foundation.dart';
class VideoMetadataFormatter {
static final _dateY4M2D2H2m2s2Pattern = RegExp(r'(\d{4})[-/](\d{2})[-/](\d{2}) (\d{2}):(\d{2}):(\d{2})');
static final _dateY4M2D2H2m2s2APmPattern = RegExp(r'(\d{4})[-/](\d{2})[-/](\d{2})T(\d+):(\d+):(\d+) ([ap]m)Z');
static final _dateY4M2D2H2m2s2APmPattern = RegExp(r'(\d{4})[-/](\d{1,2})[-/](\d{1,2})T(\d+):(\d+):(\d+)( ([ap]m))?Z');
static final _ambiguousDatePatterns = {
RegExp(r'^\d{2}[-/]\d{2}[-/]\d{4}$'),
};
@ -124,6 +124,7 @@ class VideoMetadataFormatter {
// - `UTC 2021-05-30 19:14:21`
// - `2021/10/31 21:23:17`
// - `2021-09-10T7:14:49 pmZ`
// - `2012-1-1T12:00:00Z`
// - `2021` (not enough to build a date)
var match = _dateY4M2D2H2m2s2Pattern.firstMatch(dateString);
@ -149,7 +150,7 @@ class VideoMetadataFormatter {
final hour = int.tryParse(match.group(4)!);
final minute = int.tryParse(match.group(5)!);
final second = int.tryParse(match.group(6)!);
final pm = match.group(7) == 'pm';
final pm = match.group(8) == 'pm';
if (year != null && month != null && day != null && hour != null && minute != null && second != null) {
final date = DateTime(year, month, day, hour + (pm ? 12 : 0), minute, second, 0);

20
lib/utils/time_utils.dart
View file

@ -47,7 +47,8 @@ DateTime? dateTimeFromMillis(int? millis, {bool isUtc = false}) {
final _unixStampMillisPattern = RegExp(r'\d{13}');
final _unixStampSecPattern = RegExp(r'\d{10}');
final _plainPattern = RegExp(r'(\d{8})([_-\s](\d{6})([_-\s](\d{3}))?)?');
final _dateYMD8Hms6Sub3Pattern = RegExp(r'(\d{8})([_-\s](\d{6})([_-\s](\d{3}))?)?');
final _dateY4M2D2H2m2s2Sub3Pattern = RegExp(r'(\d{4})-(\d{1,2})-(\d{1,2})-(\d{1,2})-(\d{1,2})-(\d{1,2})-(\d{1,3})');
DateTime? parseUnknownDateFormat(String? s) {
if (s == null) return null;
@ -74,7 +75,7 @@ DateTime? parseUnknownDateFormat(String? s) {
}
}
match = _plainPattern.firstMatch(s);
match = _dateYMD8Hms6Sub3Pattern.firstMatch(s);
if (match != null) {
final dateString = match.group(1);
final timeString = match.group(3);
@ -101,5 +102,20 @@ DateTime? parseUnknownDateFormat(String? s) {
}
}
match = _dateY4M2D2H2m2s2Sub3Pattern.firstMatch(s);
if (match != null) {
final year = int.tryParse(match.group(1)!);
final month = int.tryParse(match.group(2)!);
final day = int.tryParse(match.group(3)!);
final hour = int.tryParse(match.group(4)!);
final minute = int.tryParse(match.group(5)!);
final second = int.tryParse(match.group(6)!);
final millis = int.tryParse(match.group(7)!);
if (year != null && month != null && day != null && hour != null && minute != null && second != null && millis != null) {
return DateTime(year, month, day, hour, minute, second, millis);
}
}
return null;
}

1
test/model/video/metadata_test.dart
View file

@ -9,6 +9,7 @@ void main() {
expect(VideoMetadataFormatter.parseVideoDate('UTC 2021-05-30 19:14:21'), DateTime(2021, 5, 30, 19, 14, 21).millisecondsSinceEpoch);
expect(VideoMetadataFormatter.parseVideoDate('2021/10/31 21:23:17'), DateTime(2021, 10, 31, 21, 23, 17).millisecondsSinceEpoch);
expect(VideoMetadataFormatter.parseVideoDate('2021-09-10T7:14:49 pmZ'), DateTime(2021, 9, 10, 19, 14, 49).millisecondsSinceEpoch);
expect(VideoMetadataFormatter.parseVideoDate('2012-1-1T12:00:00Z'), DateTime(2012, 1, 1, 12, 0, 0).millisecondsSinceEpoch);
});
test('Ambiguous date', () {

12
test/utils/time_utils_test.dart
View file

@ -19,13 +19,15 @@ void main() {
test('Parse dates', () {
final localOffset = DateTime.now().timeZoneOffset;
expect(parseUnknownDateFormat('1600995564713'), DateTime(2020, 09, 25, 0, 59, 24, 713).add(localOffset));
expect(parseUnknownDateFormat('pre1600995564713suf'), DateTime(2020, 09, 25, 0, 59, 24, 713).add(localOffset));
expect(parseUnknownDateFormat('1600995564713'), DateTime(2020, 9, 25, 0, 59, 24, 713).add(localOffset));
expect(parseUnknownDateFormat('pre1600995564713suf'), DateTime(2020, 9, 25, 0, 59, 24, 713).add(localOffset));
expect(parseUnknownDateFormat('1600995564'), DateTime(2020, 09, 25, 0, 59, 24, 0).add(localOffset));
expect(parseUnknownDateFormat('pre1600995564suf'), DateTime(2020, 09, 25, 0, 59, 24, 0).add(localOffset));
expect(parseUnknownDateFormat('1600995564'), DateTime(2020, 9, 25, 0, 59, 24, 0).add(localOffset));
expect(parseUnknownDateFormat('pre1600995564suf'), DateTime(2020, 9, 25, 0, 59, 24, 0).add(localOffset));
expect(parseUnknownDateFormat('IMG_20210901_142523_783'), DateTime(2021, 09, 1, 14, 25, 23, 783));
expect(parseUnknownDateFormat('IMG_20210901_142523_783'), DateTime(2021, 9, 1, 14, 25, 23, 783));
expect(parseUnknownDateFormat('Screenshot_20211028-115056_Aves'), DateTime(2021, 10, 28, 11, 50, 56, 0));
expect(parseUnknownDateFormat('Screenshot_2022-05-14-15-40-29-164_uri'), DateTime(2022, 5, 14, 15, 40, 29, 164));
});
}