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video: improved date parsing

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This commit is contained in:
Thibault Deckers 2021-11-04 11:44:57 +09:00
parent 7c18334934
commit e594378efc
2 changed files with 42 additions and 6 deletions
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37
lib/model/video/metadata.dart
View file

@ -22,6 +22,7 @@ import 'package:flutter/foundation.dart';
class VideoMetadataFormatter {
static final _epoch = DateTime.fromMillisecondsSinceEpoch(0, isUtc: true);
static final _anotherDatePattern = RegExp(r'(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})');
static final _durationPattern = RegExp(r'(\d+):(\d+):(\d+)(.\d+)');
static final _locationPattern = RegExp(r'([+-][.0-9]+)');
static final Map<String, String> _codecNames = {
@ -80,19 +81,16 @@ class VideoMetadataFormatter {
static Future<CatalogMetadata?> getCatalogMetadata(AvesEntry entry) async {
final mediaInfo = await getVideoMetadata(entry);
int? dateMillis;
bool isDefined(dynamic value) => value is String && value != '0';
var dateString = mediaInfo[Keys.date];
if (!isDefined(dateString)) {
dateString = mediaInfo[Keys.creationTime];
}
int? dateMillis;
if (isDefined(dateString)) {
final date = DateTime.tryParse(dateString);
if (date != null) {
dateMillis = date.millisecondsSinceEpoch;
} else {
dateMillis = parseVideoDate(dateString);
if (dateMillis == null) {
await reportService.recordError('getCatalogMetadata failed to parse date=$dateString for mimeType=${entry.mimeType} entry=$entry', null);
}
}
@ -106,6 +104,33 @@ class VideoMetadataFormatter {
return entry.catalogMetadata;
}
static int? parseVideoDate(String dateString) {
final date = DateTime.tryParse(dateString);
if (date != null) {
return date.millisecondsSinceEpoch;
}
// `DateTime` does not recognize:
// - `UTC 2021-05-30 19:14:21`
final match = _anotherDatePattern.firstMatch(dateString);
if (match != null) {
final year = int.tryParse(match.group(1)!);
final month = int.tryParse(match.group(2)!);
final day = int.tryParse(match.group(3)!);
final hour = int.tryParse(match.group(4)!);
final minute = int.tryParse(match.group(5)!);
final second = int.tryParse(match.group(6)!);
if (year != null && month != null && day != null && hour != null && minute != null && second != null) {
final date = DateTime(year, month, day, hour, minute, second, 0);
return date.millisecondsSinceEpoch;
}
}
return null;
}
// pattern to extract optional language code suffix, e.g. 'location-eng'
static final keyWithLanguagePattern = RegExp(r'^(.*)-([a-z]{3})$');

11
test/model/video/metadata_test.dart Normal file
View file

@ -0,0 +1,11 @@
import 'package:aves/model/video/metadata.dart';
import 'package:test/test.dart';
void main() {
test('Video date parsing', () {
final localOffset = DateTime.now().timeZoneOffset;
expect(VideoMetadataFormatter.parseVideoDate('2011-05-08T03:46+09:00'), DateTime(2011, 5, 8, 12, 46).add(-localOffset).millisecondsSinceEpoch);
expect(VideoMetadataFormatter.parseVideoDate('UTC 2021-05-30 19:14:21'), DateTime(2021, 5, 30, 19, 14, 21).millisecondsSinceEpoch);
});
}