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support 7z;

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fix #137
This commit is contained in:
nyne
2025-01-17 22:30:25 +08:00
parent bfd115046d
commit 5f36ef6ea3
7 changed files with 70 additions and 22 deletions
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29
lib/utils/cbz.dart
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@@ -1,9 +1,10 @@
import 'dart:convert';
import 'package:flutter_7zip/flutter_7zip.dart';
import 'package:venera/foundation/app.dart';
import 'package:venera/foundation/comic_type.dart';
import 'package:venera/foundation/local.dart';
import 'package:venera/utils/ext.dart';
import 'package:venera/utils/file_type.dart';
import 'package:venera/utils/io.dart';
import 'package:zip_flutter/zip_flutter.dart';
@@ -57,12 +58,33 @@ class ComicChapter {
ComicChapter({required this.title, required this.start, required this.end});
}
/// Comic Book Archive. Currently supports CBZ, ZIP and 7Z formats.
abstract class CBZ {
static Future<FileType> checkType(File file) async {
var header = <int>[];
await for (var bytes in file.openRead()) {
header.addAll(bytes);
if (header.length >= 32) break;
}
return detectFileType(header);
}
static Future<void> extractArchive(File file, Directory out) async {
var fileType = await checkType(file);
if (fileType.mime == 'application/zip') {
await ZipFile.openAndExtractAsync(file.path, out.path, 4);
} else if (fileType.mime == "application/x-7z-compressed") {
await SZArchive.extractIsolates(file.path, out.path, 4);
} else {
throw Exception('Unsupported archive type');
}
}
static Future<LocalComic> import(File file) async {
var cache = Directory(FilePath.join(App.cachePath, 'cbz_import'));
if (cache.existsSync()) cache.deleteSync(recursive: true);
cache.createSync();
await ZipFile.openAndExtractAsync(file.path, cache.path, 4);
await extractArchive(file, cache);
var metaDataFile = File(FilePath.join(cache.path, 'metadata.json'));
ComicMetaData? metaData;
if (metaDataFile.existsSync()) {
@@ -72,7 +94,7 @@ abstract class CBZ {
} catch (_) {}
}
metaData ??= ComicMetaData(
title: file.name.replaceLast('.cbz', ''),
title: file.name.substring(0, file.name.lastIndexOf('.')),
author: "",
tags: [],
);
@@ -86,6 +108,7 @@ abstract class CBZ {
return !['jpg', 'jpeg', 'png', 'webp', 'gif', 'jpe'].contains(ext);
});
if(files.isEmpty) {
cache.deleteSync(recursive: true);
throw Exception('No images found in the archive');
}
files.sort((a, b) => a.path.compareTo(b.path));