Mirrors/nc-photos
1
0
Fork 0
mirror of https://gitlab.com/nkming2/nc-photos.git synced 2025-03-13 18:58:53 +01:00
Code Issues Projects Releases Packages Wiki Activity

Remove MakerNote from Exif

Browse source 
It's too large for nothing
This commit is contained in:
Ming Ming 2021-04-24 00:39:03 +08:00
parent c5caca94cb
commit bb71dcc22b
2 changed files with 48 additions and 54 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

91
lib/entity/exif.dart
View file

@ -1,5 +1,3 @@
import 'dart:convert';
import 'package:equatable/equatable.dart';
import 'package:exifdart/exifdart.dart';
import 'package:intl/intl.dart';
@ -12,57 +10,60 @@ class Exif with EquatableMixin {
bool containsKey(String key) => data.containsKey(key);
Map<String, dynamic> toJson() {
return data.map((key, value) {
var jsonValue;
if (key == "MakerNote") {
jsonValue = base64UrlEncode(value);
} else if (value is Rational) {
jsonValue = value.toJson();
} else if (value is List) {
jsonValue = value.map((e) {
if (e is Rational) {
return e.toJson();
} else {
return e;
}
}).toList();
} else {
jsonValue = value;
}
return MapEntry(key, jsonValue);
});
return Map.fromIterable(
data.entries.where((e) => e.key != "MakerNote").map((e) {
var jsonValue;
if (e.value is Rational) {
jsonValue = e.value.toJson();
} else if (e.value is List) {
jsonValue = e.value.map((e) {
if (e is Rational) {
return e.toJson();
} else {
return e;
}
}).toList();
} else {
jsonValue = e.value;
}
return MapEntry(e.key, jsonValue);
}),
key: (e) => e.key,
value: (e) => e.value,
);
}
factory Exif.fromJson(Map<String, dynamic> json) {
return Exif(json.map((key, value) {
var exifValue;
if (key == "MakerNote") {
exifValue = base64Decode(value);
} else if (value is Map) {
exifValue = Rational.fromJson(value.cast<String, dynamic>());
} else if (value is List) {
exifValue = value.map((e) {
if (e is Map) {
return Rational.fromJson(e.cast<String, dynamic>());
} else {
return e;
}
}).toList();
} else {
exifValue = value;
}
return MapEntry(key, exifValue);
}));
return Exif(Map.fromIterable(
// we are filtering out MakerNote here because it's generally very large
// and could exceed the 1MB cursor size limit on Android. Second, the
// content is proprietary and thus useless to us anyway
json.entries.where((e) => e.key != "MakerNote").map((e) {
var exifValue;
if (e.value is Map) {
exifValue = Rational.fromJson(e.value.cast<String, dynamic>());
} else if (e.value is List) {
exifValue = e.value.map((e) {
if (e is Map) {
return Rational.fromJson(e.cast<String, dynamic>());
} else {
return e;
}
}).toList();
} else {
exifValue = e.value;
}
return MapEntry(e.key, exifValue);
}),
key: (e) => e.key,
value: (e) => e.value,
));
}
@override
toString() {
final dataStr = data.entries.map((e) {
if (e.key == "MakerNote") {
return "${e.key}: '${base64UrlEncode(e.value)}'";
} else {
return "${e.key}: '${e.value}'";
}
return "${e.key}: '${e.value}'";
}).join(", ");
return "$runtimeType {$dataStr}";
}

11
test/entity/exif_test.dart
View file

@ -61,9 +61,7 @@ void main() {
final exif = Exif(<String, dynamic>{
"MakerNote": Uint8List.fromList([0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF]),
});
expect(exif.toJson(), <String, dynamic>{
"MakerNote": "ADNmmcz_",
});
expect(exif.toJson(), <String, dynamic>{});
});
});
@ -127,12 +125,7 @@ void main() {
final json = <String, dynamic>{
"MakerNote": "ADNmmcz_",
};
expect(
Exif.fromJson(json),
Exif(<String, dynamic>{
"MakerNote":
Uint8List.fromList([0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF]),
}));
expect(Exif.fromJson(json), Exif(<String, dynamic>{}));
});
});
});