Included epub library in plugin project

QuickLook.Plugin/QuickLook.Plugin.EpubViewer/EpubReader/RefEntities/EpubContentFileRef.cs

@@ -0,0 +1,83 @@
+using System;
+using System.IO;
+using System.IO.Compression;
+using System.Threading.Tasks;
+using VersOne.Epub.Internal;
+
+namespace VersOne.Epub
+{
+    public abstract class EpubContentFileRef
+    {
+        private readonly EpubBookRef epubBookRef;
+
+        public EpubContentFileRef(EpubBookRef epubBookRef)
+        {
+            this.epubBookRef = epubBookRef;
+        }
+
+        public string FileName { get; set; }
+        public EpubContentType ContentType { get; set; }
+        public string ContentMimeType { get; set; }
+
+        public byte[] ReadContentAsBytes()
+        {
+            return ReadContentAsBytesAsync().Result;
+        }
+
+        public async Task<byte[]> ReadContentAsBytesAsync()
+        {
+            ZipArchiveEntry contentFileEntry = GetContentFileEntry();
+            byte[] content = new byte[(int)contentFileEntry.Length];
+            using (Stream contentStream = OpenContentStream(contentFileEntry))
+            using (MemoryStream memoryStream = new MemoryStream(content))
+            {
+                await contentStream.CopyToAsync(memoryStream).ConfigureAwait(false);
+            }
+            return content;
+        }
+
+        public string ReadContentAsText()
+        {
+            return ReadContentAsTextAsync().Result;
+        }
+
+        public async Task<string> ReadContentAsTextAsync()
+        {
+            using (Stream contentStream = GetContentStream())
+            using (StreamReader streamReader = new StreamReader(contentStream))
+            {
+                return await streamReader.ReadToEndAsync().ConfigureAwait(false);
+            }
+        }
+
+        public Stream GetContentStream()
+        {
+            return OpenContentStream(GetContentFileEntry());
+        }
+
+        private ZipArchiveEntry GetContentFileEntry()
+        {
+            string contentFilePath = ZipPathUtils.Combine(epubBookRef.Schema.ContentDirectoryPath, FileName);
+            ZipArchiveEntry contentFileEntry = epubBookRef.EpubArchive.GetEntry(contentFilePath);
+            if (contentFileEntry == null)
+            {
+                throw new Exception(String.Format("EPUB parsing error: file {0} not found in archive.", contentFilePath));
+            }
+            if (contentFileEntry.Length > Int32.MaxValue)
+            {
+                throw new Exception(String.Format("EPUB parsing error: file {0} is bigger than 2 Gb.", contentFilePath));
+            }
+            return contentFileEntry;
+        }
+
+        private Stream OpenContentStream(ZipArchiveEntry contentFileEntry)
+        {
+            Stream contentStream = contentFileEntry.Open();
+            if (contentStream == null)
+            {
+                throw new Exception(String.Format("Incorrect EPUB file: content file \"{0}\" specified in manifest is not found.", FileName));
+            }
+            return contentStream;
+        }
+    }
+}