1 files changed, 55 insertions, 0 deletions
diff --git a/src/newt/native/NewtCommon.c b/src/newt/native/NewtCommon.c
new file mode 100644
index 000000000..0e3f99282
--- /dev/null
+++ b/src/newt/native/NewtCommon.c
@@ -0,0 +1,55 @@
+
+#include "NewtCommon.h"
+
+static const char * const ClazzNameRuntimeException = "java/lang/RuntimeException";
+static jclass    runtimeExceptionClz=NULL;
+
+void NewtCommon_FatalError(JNIEnv *env, const char* msg, ...)
+{
+    char buffer[512];
+    va_list ap;
+
+    va_start(ap, msg);
+    vsnprintf(buffer, sizeof(buffer), msg, ap);
+    va_end(ap);
+
+    fprintf(stderr, "%s\n", buffer);
+    (*env)->FatalError(env, buffer);
+}
+
+void NewtCommon_throwNewRuntimeException(JNIEnv *env, const char* msg, ...)
+{
+    char buffer[512];
+    va_list ap;
+
+    va_start(ap, msg);
+    vsnprintf(buffer, sizeof(buffer), msg, ap);
+    va_end(ap);
+
+    (*env)->ThrowNew(env, runtimeExceptionClz, buffer);
+}
+
+void NewtCommon_init(JNIEnv *env) {
+    if(NULL==runtimeExceptionClz) {
+        jclass c = (*env)->FindClass(env, ClazzNameRuntimeException);
+        if(NULL==c) {
+            NewtCommon_FatalError(env, "NEWT X11Window: can't find %s", ClazzNameRuntimeException);
+        }
+        runtimeExceptionClz = (jclass)(*env)->NewGlobalRef(env, c);
+        (*env)->DeleteLocalRef(env, c);
+        if(NULL==runtimeExceptionClz) {
+            NewtCommon_FatalError(env, "NEWT X11Window: can't use %s", ClazzNameRuntimeException);
+        }
+    }
+}
+
+jchar* NewtCommon_GetNullTerminatedStringChars(JNIEnv* env, jstring str)
+{
+    jchar* strChars = NULL;
+    strChars = calloc((*env)->GetStringLength(env, str) + 1, sizeof(jchar));
+    if (strChars != NULL) {
+        (*env)->GetStringRegion(env, str, 0, (*env)->GetStringLength(env, str), strChars);
+    }
+    return strChars;
+}
+