From 70cce375cf186440ac930c41e026b1ef614202cd Mon Sep 17 00:00:00 2001
From: Montoya Edu <montoya.edu@gmail.com>
Date: Fri, 22 May 2015 12:20:06 +0200
Subject: [PATCH] Initial support for referencing dll libraries packaged within
 artifacts.

---
 .../compiler/csharp/CSharpCompiler.java       | 35 +++++++++++++++-
 .../plexus/compiler/csharp/JarUtil.java       | 40 +++++++++++++++++++
 2 files changed, 73 insertions(+), 2 deletions(-)
 create mode 100644 plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/JarUtil.java

diff --git a/plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/CSharpCompiler.java b/plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/CSharpCompiler.java
index a71ba10a..395f9e4b 100644
--- a/plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/CSharpCompiler.java
+++ b/plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/CSharpCompiler.java
@@ -40,6 +40,7 @@
 import java.io.StringReader;
 import java.io.StringWriter;
 import java.io.Writer;
+import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
@@ -58,6 +59,10 @@
 public class CSharpCompiler
     extends AbstractCompiler
 {
+    private static final String JAR_SUFFIX = ".jar";
+    private static final String DLL_SUFFIX = ".dll";
+    private static final String NET_SUFFIX = ".net";
+    
     private static final String ARGUMENTS_FILE_NAME = "csharp-arguments";
 
     private static final String[] DEFAULT_INCLUDES = { "**/**" };
@@ -228,8 +233,34 @@ private String[] buildCompilerArguments( CompilerConfiguration config, String[]
             {
                 continue;
             }
-
-            args.add( "/reference:\"" + element + "\"" );
+            
+            if (element.endsWith(JAR_SUFFIX)) {
+                try 
+                {
+                    File dllDir = new File(element + NET_SUFFIX);
+                    if (!dllDir.exists())
+                    {
+                        dllDir.mkdir();
+                    }
+                    JarUtil.extract(dllDir, new File(element));
+                    for (String tmpfile : dllDir.list()) 
+                    {
+                        if ( tmpfile.endsWith(DLL_SUFFIX) )
+                        {
+                            String dll = Paths.get(dllDir.getAbsolutePath(), tmpfile).toString();
+                            args.add( "/reference:\"" + dll + "\"" );
+                        }
+                    }
+                }
+                catch ( IOException e )
+                {
+                    throw new CompilerException( e.toString(), e );
+                }
+            }
+            else
+            {
+                args.add( "/reference:\"" + element + "\"" );
+            }
         }
 
         // ----------------------------------------------------------------------
diff --git a/plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/JarUtil.java b/plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/JarUtil.java
new file mode 100644
index 00000000..695b7e00
--- /dev/null
+++ b/plexus-compilers/plexus-compiler-csharp/src/main/java/org/codehaus/plexus/compiler/csharp/JarUtil.java
@@ -0,0 +1,40 @@
+package org.codehaus.plexus.compiler.csharp;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Enumeration;
+import java.util.jar.JarEntry;
+import java.util.jar.JarFile;
+
+public class JarUtil {
+    public static void extract( File destDir, File jarFile ) throws IOException
+    {
+        JarFile jar = new JarFile( jarFile );
+        Enumeration enumEntries = jar.entries();
+        while ( enumEntries.hasMoreElements() ) {
+            JarEntry file = ( JarEntry ) enumEntries.nextElement();
+            File f = new File( destDir + File.separator + file.getName() );
+            if ( file.isDirectory() )
+            {
+                f.mkdir();
+                continue;
+            }
+            InputStream is = jar.getInputStream( file );
+            FileOutputStream fos = new FileOutputStream( f );
+            try
+            {
+                while ( is.available() > 0 )
+                {
+                    fos.write( is.read() );
+                }
+            }
+            finally
+            {
+                is.close();
+                fos.close();
+            }
+        }
+    }
+}