public void SetCover(byte[] data, ImageFormat imageFormat)
{
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
RemoveCover();
string filename;
EpubContentType type;
switch (imageFormat)
{
case ImageFormat.Gif:
filename = "cover.gif";
type = EpubContentType.ImageGif;
break;
case ImageFormat.Jpeg:
filename = "cover.jpeg";
type = EpubContentType.ImageJpeg;
break;
case ImageFormat.Png:
filename = "cover.png";
type = EpubContentType.ImagePng;
break;
case ImageFormat.Svg:
filename = "cover.svg";
type = EpubContentType.ImageSvg;
break;
default:
throw new ArgumentException($"Unsupported cover format: {format}", nameof(format));
}
var coverResource = new EpubByteFile
{
AbsolutePath = filename,
Href = filename,
ContentType = type,
Content = data
};
coverResource.MimeType = ContentType.ContentTypeToMimeType[coverResource.ContentType];
resources.Images.Add(coverResource);
var coverItem = new OpfManifestItem
{
Id = OpfManifest.ManifestItemCoverImageProperty,
Href = coverResource.Href,
MediaType = coverResource.MimeType
};
coverItem.Properties.Add(OpfManifest.ManifestItemCoverImageProperty);
format.Opf.Manifest.Items.Add(coverItem);
}
public void AddFile(string filename, byte[] content, EpubContentType type)
{
if (string.IsNullOrWhiteSpace(filename))
{
throw new ArgumentNullException(nameof(filename));
}
if (content == null)
{
throw new ArgumentNullException(nameof(content));
}
var file = new EpubByteFile
{
AbsolutePath = filename,
Href = filename,
ContentType = type,
Content = content
};
file.MimeType = ContentType.ContentTypeToMimeType[file.ContentType];
switch (type)
{
case EpubContentType.Css:
resources.Css.Add(file.ToTextFile());
break;
case EpubContentType.FontOpentype:
case EpubContentType.FontTruetype:
resources.Fonts.Add(file);
break;
case EpubContentType.ImageGif:
case EpubContentType.ImageJpeg:
case EpubContentType.ImagePng:
case EpubContentType.ImageSvg:
resources.Images.Add(file);
break;
case EpubContentType.Xml:
case EpubContentType.Xhtml11:
case EpubContentType.Other:
resources.Other.Add(file);
break;
default:
throw new InvalidOperationException($"Unsupported file type: {type}");
}
format.Opf.Manifest.Items.Add(new OpfManifestItem
{
Id = Guid.NewGuid().ToString("N"),
Href = filename,
MediaType = file.MimeType
});
}
private static EpubResources LoadResources(ZipArchive epubArchive, EpubBook book)
{
var resources = new EpubResources();
foreach (var item in book.Format.Opf.Manifest.Items)
{
var path = PathExt.Combine(Path.GetDirectoryName(book.Format.Ocf.RootFilePath), item.Href);
var entry = epubArchive.GetEntryImproved(path);
if (entry == null)
{
throw new EpubParseException($"file {path} not found in archive.");
}
if (entry.Length > int.MaxValue)
{
throw new EpubParseException($"file {path} is bigger than 2 Gb.");
}
var fileName = item.Href;
var mimeType = item.MediaType;
EpubContentType contentType;
contentType = ContentType.MimeTypeToContentType.TryGetValue(mimeType, out contentType)
? contentType
: EpubContentType.Other;
switch (contentType)
{
case EpubContentType.Xhtml11:
case EpubContentType.Css:
case EpubContentType.Oeb1Document:
case EpubContentType.Oeb1Css:
case EpubContentType.Xml:
case EpubContentType.Dtbook:
case EpubContentType.DtbookNcx:
{
var file = new EpubTextFile
{
FileName = fileName,
MimeType = mimeType,
ContentType = contentType
};
using (var stream = entry.Open())
{
file.Content = stream.ReadToEnd();
}
switch (contentType)
{
case EpubContentType.Xhtml11:
resources.Html.Add(file);
break;
case EpubContentType.Css:
resources.Css.Add(file);
break;
default:
resources.Other.Add(file);
break;
}
break;
}
default:
{
var file = new EpubByteFile
{
FileName = fileName,
MimeType = mimeType,
ContentType = contentType
};
using (var stream = entry.Open())
{
if (stream == null)
{
throw new EpubException($"Incorrect EPUB file: content file \"{fileName}\" specified in manifest is not found");
}
using (var memoryStream = new MemoryStream((int)entry.Length))
{
stream.CopyTo(memoryStream);
file.Content = memoryStream.ToArray();
}
}
switch (contentType)
{
case EpubContentType.ImageGif:
case EpubContentType.ImageJpeg:
case EpubContentType.ImagePng:
case EpubContentType.ImageSvg:
resources.Images.Add(file);
break;
case EpubContentType.FontTruetype:
case EpubContentType.FontOpentype:
resources.Fonts.Add(file);
break;
default:
resources.Other.Add(file);
break;
}
break;
}
}
}
return(resources);
}
