From b79038781542f646573f42c29603273b3ceec541 Mon Sep 17 00:00:00 2001
From: libgenapps <33476799+libgenapps@users.noreply.github.com>
Date: Wed, 21 Feb 2018 19:37:00 +0300
Subject: [PATCH] 7z reader fix

---
 LibgenDesktop.Setup/Constants.cs              |  2 +-
 LibgenDesktop/Common/Constants.cs             |  4 +-
 LibgenDesktop/LibgenDesktop.csproj            |  1 +
 .../Models/SqlDump/PositioningStreamReader.cs | 58 +++++++++++++++++++
 LibgenDesktop/Models/SqlDump/SqlDumpReader.cs |  2 +-
 5 files changed, 63 insertions(+), 4 deletions(-)
 create mode 100644 LibgenDesktop/Models/SqlDump/PositioningStreamReader.cs

diff --git a/LibgenDesktop.Setup/Constants.cs b/LibgenDesktop.Setup/Constants.cs
index 3f69d77..b8b7275 100644
--- a/LibgenDesktop.Setup/Constants.cs
+++ b/LibgenDesktop.Setup/Constants.cs
@@ -2,7 +2,7 @@
 {
     internal static class Constants
     {
-        public const string CURRENT_VERSION = "0.13.1";
+        public const string CURRENT_VERSION = "0.13.2";
         public const string PRODUCT_TITLE_FORMAT = "Libgen Desktop " + CURRENT_VERSION + " ({0}-bit)";
         public const string SHORTCUT_TITLE_FORMAT = "Libgen Desktop ({0}-bit)";
         public const string PRODUCT_COMPANY = "Libgen Apps";
diff --git a/LibgenDesktop/Common/Constants.cs b/LibgenDesktop/Common/Constants.cs
index fa4e5e0..fb34c25 100644
--- a/LibgenDesktop/Common/Constants.cs
+++ b/LibgenDesktop/Common/Constants.cs
@@ -2,8 +2,8 @@
 {
     internal static class Constants
     {
-        public const string CURRENT_VERSION = "0.13.1";
-        public const string CURRENT_GITHUB_RELEASE_NAME = "v0.13.1 alpha";
+        public const string CURRENT_VERSION = "0.13.2";
+        public const string CURRENT_GITHUB_RELEASE_NAME = "v0.13.2 alpha";
         public const string CURRENT_DATABASE_VERSION = "0.7";
 
         public const string APP_SETTINGS_FILE_NAME = "libgen.config";
diff --git a/LibgenDesktop/LibgenDesktop.csproj b/LibgenDesktop/LibgenDesktop.csproj
index f5c8de7..5b79ebe 100644
--- a/LibgenDesktop/LibgenDesktop.csproj
+++ b/LibgenDesktop/LibgenDesktop.csproj
@@ -211,6 +211,7 @@
     <Compile Include="Models\SqlDump\ColumnType.cs" />
     <Compile Include="Models\Import\Importer.cs" />
     <Compile Include="Models\Import\NonFictionImporter.cs" />
+    <Compile Include="Models\SqlDump\PositioningStreamReader.cs" />
     <Compile Include="Models\SqlDump\SqlDumpReader.cs" />
     <Compile Include="Models\SqlDump\TableDefinition.cs" />
     <Compile Include="Models\SqlDump\TableDefinitions.cs" />
diff --git a/LibgenDesktop/Models/SqlDump/PositioningStreamReader.cs b/LibgenDesktop/Models/SqlDump/PositioningStreamReader.cs
new file mode 100644
index 0000000..2ddac02
--- /dev/null
+++ b/LibgenDesktop/Models/SqlDump/PositioningStreamReader.cs
@@ -0,0 +1,58 @@
+using System;
+using System.IO;
+
+namespace LibgenDesktop.Models.SqlDump
+{
+    internal class PositioningStream : Stream
+    {
+        private readonly Stream baseStream;
+        private long position;
+
+        public PositioningStream(Stream baseStream)
+        {
+            this.baseStream = baseStream;
+            position = 0;
+        }
+
+        public override bool CanRead => true;
+        public override bool CanSeek => false;
+        public override bool CanWrite => false;
+        public override long Length => throw new NotImplementedException();
+
+        public override long Position
+        {
+            get => position;
+            set => throw new NotImplementedException();
+        }
+
+        public override void Flush()
+        {
+            throw new NotImplementedException();
+        }
+
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            int result = baseStream.Read(buffer, offset, count);
+            if (result > 0)
+            {
+                position += result;
+            }
+            return result;
+        }
+
+        public override long Seek(long offset, SeekOrigin origin)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void SetLength(long value)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void Write(byte[] buffer, int offset, int count)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
diff --git a/LibgenDesktop/Models/SqlDump/SqlDumpReader.cs b/LibgenDesktop/Models/SqlDump/SqlDumpReader.cs
index c4e762e..7e7a563 100644
--- a/LibgenDesktop/Models/SqlDump/SqlDumpReader.cs
+++ b/LibgenDesktop/Models/SqlDump/SqlDumpReader.cs
@@ -72,7 +72,7 @@ public SqlDumpReader(string filePath)
                     sevenZipArchive = SevenZipArchive.Open(filePath);
                     SevenZipArchiveEntry firstSevenZipArchiveEntry = sevenZipArchive.Entries.First();
                     FileSize = firstSevenZipArchiveEntry.Size;
-                    streamReader = new StreamReader(firstSevenZipArchiveEntry.OpenEntryStream());
+                    streamReader = new StreamReader(new PositioningStream(firstSevenZipArchiveEntry.OpenEntryStream()));
                     break;
                 default:
                     FileSize = new FileInfo(filePath).Length;