add win32 methods to help find exe associated w/ a script extension

bindings/java/src/jni/javasigar.c

@@ -1286,3 +1286,31 @@ JNIEXPORT jlong SIGAR_JNI(ResourceLimit_INFINITY)
     return RLIM_INFINITY;
 #endif
 }
+
+JNIEXPORT jstring SIGAR_JNI(win32_Win32_findExecutable)
+(JNIEnv *env, jclass sigar_class, jstring jname)
+{
+#ifdef WIN32
+#include "shellapi.h"
+    const char *name;
+    jboolean is_copy;
+    char exe[MAX_PATH];
+    LONG result;
+    jstring jexe = NULL;
+
+    name = JENV->GetStringUTFChars(env, jname, &is_copy);
+
+    if ((result = (LONG)FindExecutable(name, ".", exe)) > 32) {
+        jexe = JENV->NewStringUTF(env, exe);
+    }
+
+    if (is_copy) {
+        JENV->ReleaseStringUTFChars(env, jname, name);
+    }
+
+    return jexe;
+#else
+    sigar_throw_notimpl(env, "win32 only");
+    return NULL;
+#endif
+}

bindings/java/src/net/hyperic/sigar/win32/Win32.java

@@ -1,9 +1,11 @@
 package net.hyperic.sigar.win32;
 
+import java.io.File;
+
 import net.hyperic.sigar.Sigar;
 import net.hyperic.sigar.SigarException;
 
-abstract class Win32 {
+public abstract class Win32 {
 
     static {
         try {
@@ -12,4 +14,62 @@ abstract class Win32 {
             
         }
     }
+
+    public static native String findExecutable(String name)
+        throws SigarException;
+
+    public static String findScriptExecutable(String name) {
+        int ix = name.lastIndexOf(".");
+        if (ix == -1) {
+            return null;
+        }
+
+        String ext = name.substring(ix+1);
+        if (ext.equals("exe") ||
+            ext.equals("bat") ||
+            ext.equals("com"))
+        {
+            return null;
+        }
+
+        String exe;
+        try {
+            exe = findExecutable(name);
+        } catch (SigarException e) {
+            return null;
+        }
+        if (exe == null) {
+            return null; //no association
+        }
+
+        exe = exe.toLowerCase();
+        name = name.toLowerCase();
+        if (exe.equals(name) || exe.endsWith(name)) {
+            return null; //same thing
+        }
+
+        File file = new File(exe);
+        //rewrite to use cscript for command line stuff
+        if (file.getName().equals("wscript.exe")) {
+            exe =
+                file.getParent() +
+                File.separator +
+                "cscript.exe";
+        }
+
+        return exe;
+    }
+
+    public static void main(String[] args) throws Exception {
+        for (int i=0; i<args.length; i++) {
+            String file =
+                new File(args[i]).getAbsoluteFile().toString();
+            String exe =
+                findScriptExecutable(file);
+            if (exe == null) {
+                continue;
+            }
+            System.out.println(args[i] + "=" + exe);
+        }
+    }
 }