An attempt was made to fix a error #26 “"Unable to find an entry poin…

…t named 'libsass_version' in DLL 'libsass'." on Azure Web App”

global.json

@@ -1,5 +1,5 @@
 {
 	"sdk": {
-		"version": "2.1.500"
+		"version": "2.2.101"
 	}
 }

src/LibSassHost/Internal/SassCompilerProxy.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Reflection;
-
-using LibSassHost.Internal.Native;
+using LibSassHost.Internal.Native;
 
 namespace LibSassHost.Internal
 {

src/LibSassHost/LibSassHost.csproj

@@ -29,7 +29,7 @@ This package does not contain the native implementations of LibSass. Therefore,
 		<RepositoryUrl>https://github.com/Taritsyn/LibSassHost</RepositoryUrl>
 		<RepositoryType>git</RepositoryType>
 		<PackageTags>LibSass;Sass;SCSS;CSS</PackageTags>
-		<PackageReleaseNotes>Removed a generation of ID for instance of the file manager.</PackageReleaseNotes>
+		<PackageReleaseNotes>An attempt was made to fix a error #26 “"Unable to find an entry point named 'libsass_version' in DLL 'libsass'." on Azure Web App”.</PackageReleaseNotes>
 		<NeutralLanguage>en-US</NeutralLanguage>
 		<GenerateAssemblyTitleAttribute>false</GenerateAssemblyTitleAttribute>
 		<GenerateAssemblyDescriptionAttribute>false</GenerateAssemblyDescriptionAttribute>

src/LibSassHost/SassCompiler.cs

@@ -92,6 +92,27 @@ public static IFileManager FileManager
 			get { return _fileManager; }
 			set { _fileManager = value; }
 		}
+#if !NETSTANDARD
+
+		/// <summary>
+		/// Static constructor
+		/// </summary>
+		/// <exception cref="SassCompilerLoadException">Failed to load a Sass-compiler.</exception>
+		static SassCompiler()
+		{
+			if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+			{
+				try
+				{
+					AssemblyResolver.Initialize();
+				}
+				catch (InvalidOperationException e)
+				{
+					throw SassErrorHelpers.WrapCompilerLoadException(e);
+				}
+			}
+		}
+#endif
 
 
 		/// <summary>
@@ -110,20 +131,7 @@ private static void Initialize()
 				{
 					return;
 				}
-#if !NETSTANDARD
 
-				if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-				{
-					try
-					{
-						AssemblyResolver.Initialize();
-					}
-					catch (InvalidOperationException e)
-					{
-						throw SassErrorHelpers.WrapCompilerLoadException(e);
-					}
-				}
-#endif
 				try
 				{
 					_version = SassCompilerProxy.GetVersion();
@@ -133,6 +141,24 @@ private static void Initialize()
 				{
 					throw WrapDllNotFoundException(e);
 				}
+#if NETSTANDARD1_3
+				catch (TypeLoadException e)
+#else
+				catch (EntryPointNotFoundException e)
+#endif
+				{
+					string message = e.Message;
+					if (message.ContainsQuotedValue(DllName.Universal)
+						&& (message.ContainsQuotedValue("libsass_version") || message.ContainsQuotedValue("libsass_language_version")))
+					{
+						_version = "0.0.0";
+						_languageVersion = "0.0";
+					}
+					else
+					{
+						throw SassErrorHelpers.WrapCompilerLoadException(e, true);
+					}
+				}
 				catch (Exception e)
 				{
 					throw SassErrorHelpers.WrapCompilerLoadException(e, true);

src/LibSassHost/readme.txt

@@ -26,7 +26,8 @@
    =============
    RELEASE NOTES
    =============
-   Removed a generation of ID for instance of the file manager.
+   An attempt was made to fix a error #26 “"Unable to find an entry point named
+   'libsass_version' in DLL 'libsass'." on Azure Web App”.
 
    ============
    PROJECT SITE

test/LibSassHost.Test.Common/VersionInfoTests.cs

@@ -12,38 +12,69 @@ public class VersionInfoTests
 		/// <summary>
 		/// Regular expression for working with the version of the LibSass library
 		/// </summary>
-		private static readonly Regex _versionRegex = new Regex(@"\d+(?:\.\d+){2}");
+		private static readonly Regex _versionRegex = new Regex(@"^(?<major>\d+)\.(?<minor>\d+)\.(?<patch>\d+)$");
 
 		/// <summary>
 		/// Regular expression for working with the version of Sass language
 		/// </summary>
-		private static readonly Regex _languageVersionRegex = new Regex(@"\d+\.\d+");
+		private static readonly Regex _languageVersionRegex = new Regex(@"^(?<major>\d+)\.(?<minor>\d+)$");
 
 
 		[Fact]
 		public void VersionFormatIsCorrect()
 		{
 			// Arrange
+			bool formatIsCorrect = false;
+			int major = -1;
+			int minor = -1;
+			int patch = -1;
 
 			// Act
 			string version = SassCompiler.Version;
-			bool formatIsCorrect = _versionRegex.IsMatch(version);
+			Match match = _versionRegex.Match(version);
+
+			if (match.Success)
+			{
+				formatIsCorrect = true;
+
+				GroupCollection groups = match.Groups;
+				major = int.Parse(groups["major"].Value);
+				minor = int.Parse(groups["minor"].Value);
+				patch = int.Parse(groups["patch"].Value);
+			}
 
 			// Assert
 			Assert.True(formatIsCorrect);
+			Assert.True(major > 0);
+			Assert.True(minor >= 0);
+			Assert.True(patch >= 0);
 		}
 
 		[Fact]
 		public void LanguageVersionFormatIsCorrect()
 		{
 			// Arrange
+			bool formatIsCorrect = false;
+			int major = -1;
+			int minor = -1;
 
 			// Act
 			string languageVersion = SassCompiler.LanguageVersion;
-			bool formatIsCorrect = _languageVersionRegex.IsMatch(languageVersion);
+			Match match = _languageVersionRegex.Match(languageVersion);
+
+			if (match.Success)
+			{
+				formatIsCorrect = true;
+
+				GroupCollection groups = match.Groups;
+				major = int.Parse(groups["major"].Value);
+				minor = int.Parse(groups["minor"].Value);
+			}
 
 			// Assert
 			Assert.True(formatIsCorrect);
+			Assert.True(major > 0);
+			Assert.True(minor >= 0);
 		}
 	}
 }