public EpubWriter(EpubBook book)
{
if (book == null)
{
throw new ArgumentNullException(nameof(book));
}
if (book.Format?.Opf == null)
{
throw new ArgumentException("book opf instance == null", nameof(book));
}
format = book.Format;
resources = book.Resources;
opfPath = format.Ocf.RootFilePath;
ncxPath = format.Opf.FindNcxPath();
if (ncxPath != null)
{
// Remove NCX file from the resources - Write() will format a new one.
resources.Other = resources.Other.Where(e => e.FileName != ncxPath).ToList();
ncxPath = PathExt.Combine(PathExt.GetDirectoryPath(opfPath), ncxPath);
}
}
public void Write(Stream stream)
{
using (var archive = new ZipArchive(stream, ZipArchiveMode.Create, true))
{
archive.CreateEntry("mimetype", MimeTypeWriter.Format());
archive.CreateEntry(Constants.OcfPath, OcfWriter.Format(opfPath));
archive.CreateEntry(opfPath, OpfWriter.Format(format.Opf));
if (format.Ncx != null)
{
archive.CreateEntry(ncxPath, NcxWriter.Format(format.Ncx));
}
var allFiles = new[]
{
resources.Html.Cast <EpubFile>(),
resources.Css,
resources.Images,
resources.Fonts,
resources.Other
}.SelectMany(collection => collection as EpubFile[] ?? collection.ToArray());
var relativePath = PathExt.GetDirectoryPath(opfPath);
foreach (var file in allFiles)
{
var absolutePath = PathExt.Combine(relativePath, file.FileName);
archive.CreateEntry(absolutePath, file.Content);
}
}
}
public static EpubBook Read(Stream stream, bool leaveOpen, Encoding encoding = null)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (encoding == null)
{
encoding = Constants.DefaultEncoding;
}
using (var archive = new ZipArchive(stream, ZipArchiveMode.Read, leaveOpen, encoding))
{
var format = new EpubFormat {
Ocf = OcfReader.Read(archive.LoadXml(Constants.OcfPath))
};
var rootFilePath = format.Ocf.RootFilePath;
if (rootFilePath == null)
{
throw new EpubParseException("Epub OCF doesn't specify a root file.");
}
format.Opf = OpfReader.Read(archive.LoadXml(rootFilePath));
var navPath = format.Opf.FindNavPath();
if (navPath != null)
{
var absolutePath = PathExt.Combine(PathExt.GetDirectoryPath(rootFilePath), navPath);
format.Nav = NavReader.Read(archive.LoadHtml(absolutePath));
}
var ncxPath = format.Opf.FindNcxPath();
if (ncxPath != null)
{
var absolutePath = PathExt.Combine(PathExt.GetDirectoryPath(rootFilePath), ncxPath);
format.Ncx = NcxReader.Read(archive.LoadXml(absolutePath));
}
var book = new EpubBook {
Format = format
};
book.Resources = LoadResources(archive, book);
book.SpecialResources = LoadSpecialResources(archive, book);
book.CoverImage = LoadCoverImage(book);
book.TableOfContents = LoadChapters(book);
return(book);
}
}
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);
}
public static EpubBook Read(Stream stream, string password)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
using (var archive = ZipFile.Read(stream))
{
// OCF
var entryOCF = archive.Entries.SingleOrDefault(entry => entry.FileName.Equals(Constants.OcfPath));
if (entryOCF == null)
{
throw new EpubParseException("Epub OCF doesn't specify a root file.");
}
var textOCF = GetText(entryOCF, password);
var format = new EpubFormat {
Ocf = OcfReader.Read(XDocument.Parse(textOCF))
};
var rootFilePath = format.Ocf.RootFilePath;
if (rootFilePath == null)
{
throw new EpubParseException("Epub OCF doesn't specify a root file.");
}
// OPF
var entryOPF = archive.Entries.SingleOrDefault(entry => entry.FileName.Equals(rootFilePath));
if (entryOPF == null)
{
throw new EpubParseException("Epub OPF doesn't specify a root file.");
}
var textOPF = GetText(entryOPF, password);
format.Opf = OpfReader.Read(XDocument.Parse(textOPF));
// Nav
var navPath = format.Opf.FindNavPath();
if (navPath != null)
{
var absolutePath = PathExt.Combine(PathExt.GetDirectoryPath(rootFilePath), navPath);
var entryNav = archive.Entries.SingleOrDefault(entry => entry.FileName.Equals(absolutePath));
if (entryNav != null)
{
var textNav = GetText(entryNav, password);
format.Nav = NavReader.Read(XDocument.Parse(textNav));
}
}
// Ncx
var ncxPath = format.Opf.FindNcxPath();
if (ncxPath != null)
{
var absolutePath = PathExt.Combine(PathExt.GetDirectoryPath(rootFilePath), ncxPath);
var entryNcx = archive.Entries.SingleOrDefault(entry => entry.FileName.Equals(absolutePath));
if (entryNcx != null)
{
var textNcx = GetText(entryNcx, password);
format.Ncx = NcxReader.Read(XDocument.Parse(textNcx));
}
}
var book = new EpubBook {
Format = format
};
book.Resources = LoadResources(archive, book, password);
book.SpecialResources = LoadSpecialResources(archive, book, password);
book.CoverImage = LoadCoverImage(book);
book.TableOfContents = new TableOfContents {
EpubChapters = LoadChapters(book)
};
return(book);
}
}
