public async Task SetImagesAsync(ICollection <EpubByteFile> images)
{
// Is called when displaying a book; is a perfect time to make the activity
if (!ProjectRomeEnabled)
{
return;
}
EpubByteFile bestImage = null;
string imageDataUrl = null;
foreach (var file in images)
{
if (bestImage == null)
{
bestImage = file;
}
}
if (bestImage != null)
{
var b64 = Convert.ToBase64String(bestImage.Content);
imageDataUrl = $"data:{bestImage.MimeType};base64,{b64}"; // image/png
}
await CreateActivityAsync(CurrBook, CurrLocation, imageDataUrl);
}
public static string FileName(this EpubByteFile epub)
{
var str = epub.AbsolutePath;
var lastIndex = str.LastIndexOf('/');
if (lastIndex < 0)
{
return(str);
}
var retval = str.Substring(lastIndex + 1);
return(retval);
}
private EpubResources LoadResources(EpubFormat format)
{
var resources = new EpubResources();
foreach (var item in format.Opf.Manifest.Items)
{
var path = item.Href.ToAbsolutePath(format.Paths.OpfAbsolutePath);
FileInfo entry = _bookFolder.GetFile("." + path);
if (entry == null)
{
throw new EpubParseException($"file {path} not found in archive.");
}
if (entry.Length > int.MaxValue)
{
throw new EpubParseException($"file {path} is bigger than 2 Gb.");
}
var href = 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
{
AbsolutePath = path,
Href = href,
MimeType = mimeType,
ContentType = contentType
};
resources.All.Add(file);
using (var stream = entry.OpenRead())
{
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
{
AbsolutePath = path,
Href = href,
MimeType = mimeType,
ContentType = contentType
};
resources.All.Add(file);
using (var stream = entry.OpenRead())
{
if (stream == null)
{
throw new EpubException(
$"Incorrect EPUB file: content file \"{href}\" 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);
}
