public async Task AppendAsync(string fileName, IProgress <int> progress)
{
using (EnterSingleOperation())
using (Images.EnterUnnotifiedSection())
using (var bookmarks = new BookmarkCollection())
await ReadFileAsync(fileName, bookmarks, progress).ConfigureAwait(false);
}
async Task <FileHeader> ReadFileAsync(string fileName, BookmarkCollection bookmarks, IProgress <int> progress)
{
using (FileStream readStream = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
var cic = FileHeader.Load(readStream);
// ID確認
if (cic == null)
{
throw new ArgumentException(Properties.Resources.InvalidFileFormat);
}
bookmarks.Load(readStream); // 目次
await Images.LoadAsync(readStream, cic.FileVersion, progress).ConfigureAwait(false); // 画像
return(cic);
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
using (EnterUndirtiableSection())
{
if (_images != null)
{
_images.Clear();
_images.Dispose();
_images = null;
}
if (_bookmarks != null)
{
_bookmarks.Clear();
_bookmarks.Dispose();
_bookmarks = null;
}
Thumbnail = null;
Title = Author = string.Empty;
IsDirty = false;
}
}
}
static async Task WriteFileAsync(string fileName, IReadOnlyList <ImageReference> images, FileHeader cic, BookmarkCollection bookmarks, IProgress <int> progress)
{
using (FileStream writeStream = new FileStream(fileName, FileMode.Create, FileAccess.Write))
{
cic.Save(writeStream);
bookmarks.Save(writeStream);
using (BinaryWriter writer = new BinaryWriter(writeStream, System.Text.Encoding.Unicode, true))
{
writer.Write(images.Count); // 画像数
for (int i = 0; i < images.Count; i++)
{
await images[i].SaveAsync(writer).ConfigureAwait(false);
progress?.Report((i + 1) * 100 / images.Count);
}
}
}
}
public async Task ExtractAsync(string fileName, IEnumerable <ImageReference> images, IProgress <int> progress)
{
using (EnterSingleOperation())
using (var bookmarks = new BookmarkCollection())
await WriteFileAsync(fileName, images.ToArray(), new FileHeader(string.Empty, Author, null, PageTurningDirection, null), bookmarks, progress).ConfigureAwait(false);
}