From a764e59e1d3a8e330f0d484fdb26b35ca3f0b2e4 Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Sat, 22 Mar 2008 02:15:12 +0000
Subject: bringing pdj-0.8.3 into the main branch

svn path=/trunk/externals/loaders/pdj/; revision=9621
---
 src/pdj-win32.c | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 src/pdj-win32.c

(limited to 'src/pdj-win32.c')

diff --git a/src/pdj-win32.c b/src/pdj-win32.c
new file mode 100644
index 0000000..c93e53a
--- /dev/null
+++ b/src/pdj-win32.c
@@ -0,0 +1,107 @@
+#include <stdlib.h>
+#include <string.h>
+#include <windows.h>
+#include "pdj.h"
+
+int getuglylibpath(char *path) {
+	HMODULE hmodule = GetModuleHandle("pdj.dll");
+	char dllPath[BUFFER_SIZE];
+	int rc;
+	
+	if ( hmodule == NULL ) {
+		post("pdj: can't get windows dll handle");
+		strcpy(path, ".");
+		return 1;
+	}
+		
+	rc = GetModuleFileName(hmodule, dllPath, 1023);
+	if ( rc == 0 || rc == 1023 ) {
+		post("pdj: can't get windows dll path");
+		strcpy(path, ".");
+		return 1;
+	}
+	
+	dllPath[strlen(dllPath)-8] = 0;
+	strcpy(path, dllPath);
+	return 0;
+}
+
+
+static char *getJavaHomeFromReg(char *javaHome) {
+	char keyName[BUFFER_SIZE] = "Software\\JavaSoft\\Java Development Kit";
+	char *dest;
+	int size = BUFFER_SIZE;
+	HKEY hKey;
+	long rc;
+
+	rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, keyName, 0, KEY_READ, &hKey);
+	if ( rc != ERROR_SUCCESS )
+		return NULL;
+
+	strcat(keyName, "\\");
+	dest = strlen(keyName) + keyName;
+	rc = RegQueryValueEx(hKey, "CurrentVersion", NULL, NULL, 
+		(LPBYTE) dest, &size);
+
+	RegCloseKey(hKey);
+
+	if ( rc != ERROR_SUCCESS )
+		return NULL;
+
+	rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, keyName, 0, KEY_READ, &hKey);
+	if ( rc != ERROR_SUCCESS )
+		return NULL;
+
+	size = BUFFER_SIZE;
+	rc = RegQueryValueEx(hKey, "JavaHome", NULL, NULL, 
+		(LPBYTE) javaHome, &size);
+
+	RegCloseKey(hKey);
+
+	if ( rc != ERROR_SUCCESS ) 
+		return NULL;
+
+	return javaHome;
+}
+
+
+JNI_CreateJavaVM_func *linkjvm(char *vm_type) {
+	HINSTANCE jvmDll = (HINSTANCE)NULL;
+	JNI_CreateJavaVM_func *func;
+	char work[BUFFER_SIZE];
+	char *javahome = pdj_getProperty("pdj.JAVA_HOME");
+	void *libVM;
+
+	// default config or no config ? try 
+	if ( javahome == NULL || javahome[0] == '/' ) {
+		javahome = NULL;
+		javahome = getenv("JAVA_HOME");
+		if ( javahome == NULL ) {
+			javahome = getJavaHomeFromReg(work);
+			if ( javahome == NULL ) {
+				post("pdj: unable to find any java VM. Please set JAVA_HOME environment variable");
+				return NULL;
+			}
+		}
+	}
+
+	strcpy(work, javahome);
+	strcat(work, "\\jre\\bin\\");
+	strcat(work, vm_type);
+	strcat(work, "\\jvm.dll");
+	jvmDll = LoadLibrary(work);
+
+	if ( jvmDll == NULL ) {
+		post("post: unable to find jvm.dll in %s", work);
+		return NULL;
+	}
+	func = GetProcAddress(jvmDll, "JNI_CreateJavaVM");
+	if ( func == NULL ) {
+		post("pdj: unable to find symbol: JNI_CreateJavaVM in jvm.dll ??");
+		return NULL;
+	}
+
+	post("pdj: using JVM %s", javahome);
+
+	return func;
+}
-- 
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