private async Task <byte[]> ReadAsync(string file, string cover)
{
return(await Task <byte[]> .Run(() =>
{
FileInfo f = new FileInfo(file);
if (!f.Exists)
{
Console.WriteLine("文件不存在...");
return none;
}
using (var archive = ArchiveFactory.Open(file))
{
try
{
IArchiveEntry result = null;
foreach (var entry in archive.Entries)
{
if (result == null && !entry.IsDirectory && ComicUtils.IsImage(entry.Key))
{
result = entry;
if (StringUtils.IsBlank(cover))
{
break;
}
}
if (StringUtils.IsEqual(entry.Key, cover))
{
result = entry;
break;
}
}
if (result != null)
{
return ImageUtils.PreviewBuffer(result, width, height);
}
}
catch (ArchiveException ex)
{
Console.WriteLine(file);
Console.WriteLine(ex);
//throw;
}
catch (CryptographicException ex)
{
Console.WriteLine(file);
Console.WriteLine(ex);
}
}
return none;
}));
}
private async Task preparing()
{
Console.WriteLine("识别文件中的有效图片.");
string file = Path.Combine(book.Path, book.Name);
FileInfo f = new FileInfo(file);
if (!f.Exists)
{
Console.WriteLine("文件不存在...");
return;
}
// IArchive archive = null;
try
{
var archive = ArchiveFactory.Open(file);
Console.WriteLine("开始对内容排序.");
entries = archive.Entries
.Where(a => (!a.IsDirectory && ComicUtils.IsImage(a.Key)))
.OrderBy(a => a.Key)
.ToList();
}
catch (CryptographicException ex)
{
Console.WriteLine("打开文件需要密码.");
Console.WriteLine(ex);
}
Console.WriteLine("文件页数:" + entries.Count);
// 过滤不是图片的压缩包文件，并按文件名排序
if (book.Count != entries.Count)
{
Console.WriteLine("更新页码数.");
book.Count = entries.Count;
await bookService.UpdateAsync(book);
}
Console.WriteLine("找到[" + entries.Count + "]张图片");
EntryPaginator.DataSource = entries;
if (_Paged && book.Index > 0 && book.Index <= entries.Count)
{
await EntryPaginator.HandlePageIndexChange(new PaginationEventArgs(book.Index, 1));
}
entry = EntryPaginator.Paged().ToList();
//Console.WriteLine
await Task.CompletedTask;
}