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#include <jni.h>
#include <string.h>
#include <stdlib.h>
int main(int argc, char** argv)
{
JNIEnv *env;
JavaVM *vm;
JavaVMInitArgs vm_args;
JavaVMOption options[argc-1];
char** read_pos;
char** write_pos;
int a;
jint vm_count;
jint main_count;
jint res;
jclass cls;
jmethodID main_method;
jclass string_class;
jobjectArray args;
vm_args.version = JNI_VERSION_1_2;
vm_args.ignoreUnrecognized = JNI_TRUE;
read_pos = argv + 1;
write_pos = argv;
for (a = 0; a < argc - 1; ++a)
{
if (strncmp(*read_pos, "-J", (size_t)2) == 0)
{
options[vm_count].optionString = *read_pos + 2;
++vm_count;
}
else
{
*write_pos = *read_pos;
++write_pos;
++main_count;
}
++read_pos;
}
for (a = 0; a < main_count; ++a)
printf("main option %d: %s\n", a, argv[a]);
for (a = 0; a < vm_count; ++a)
printf("vm option %d: %s\n", a, options[a].optionString);
vm_args.options = options;
vm_args.nOptions = vm_count;
res = JNI_CreateJavaVM(&vm, (void**)&env, &vm_args);
if (res < 0)
{
fprintf(stderr, "Couldn't create Java VM\n");
exit(-1);
}
cls = (*env)->FindClass(env, "CLASS_NAME");
if (cls == NULL) {
goto destroy;
}
main_method = (*env)->GetStaticMethodID(env, cls, "main",
"([Ljava/lang/String;)V");
if (main_method == NULL) {
goto destroy;
}
string_class = (*env)->FindClass(env, "java/lang/String");
args = (*env)->NewObjectArray(env, main_count, string_class, NULL);
if (args == NULL) {
goto destroy;
}
for (a = 0; a < main_count; ++a)
{
jstring jstr;
jstr = (*env)->NewStringUTF(env, *argv);
if (jstr == NULL)
goto destroy;
++argv;
(*env)->SetObjectArrayElement(env, args, a, jstr);
}
(*env)->CallStaticVoidMethod(env, cls, main_method, args);
destroy:
if ((*env)->ExceptionOccurred(env))
(*env)->ExceptionDescribe(env);
(*vm)->DestroyJavaVM(vm);
return 0;
}
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