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#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#ifdef _X11_
#include <dlfcn.h>
#endif
#ifdef _WIN32_
#include <windows.h>
#endif
#include <jni.h>
static char * defargs[] = { "-loadgljlibs", "gl4java.GLContext", "-info" };
#ifdef _X11_
static char * libname="libGL4JavaJauGljJNI13.so";
#endif
#ifdef _WIN32_
static char * libname="GL4JavaJauGljJNI13.DLL";
#endif
int main(int argc, char ** argv)
{
JNIEnv *env;
JavaVM *jvm=NULL;
JavaVMInitArgs jvm_args;
JavaVMOption options[100];
jstring jstrargs[100];
jstring jstrdummy;
jobjectArray jargs;
int jargnum=0;
jint res;
jclass cls;
jmethodID mid;
int opt_num=0, i;
int argidx=1;
#ifdef _WIN32_
HMODULE lib;
#endif
#ifdef _X11_
void * lib;
const char *err=NULL;
#endif
char ** myargv;
if(argc<2)
{
printf("loading default gl4java arguments !\n");
myargv=calloc(4, sizeof(char *));
memcpy(myargv, argv, sizeof(char *));
myargv[argidx] = defargs[0];
myargv[argidx+1] = defargs[1];
myargv[argidx+2] = defargs[2];
argv=myargv;
argc=argidx+3;
}
for ( i = 0; i< argc; i++)
printf("calling argv[%d]: %s\n", i, argv[i]);
if(strcmp(argv[argidx],"-loadgljlibs")==0)
{
printf("loading default gl4java libraries !\n");
argidx++;
#ifdef _X11_
lib = dlopen (libname, RTLD_LAZY | RTLD_GLOBAL);
if (lib == NULL)
{
err=dlerror();
printf ("GLERROR: cannot access library %s\n", libname);
if(err!=NULL) printf("\t dlerror: %s\n", err);
exit(1);
}
#endif
#ifdef _WIN32_
lib = LoadLibrary (libname);
if (lib == NULL)
{
printf ("GLERROR: cannot access library %s\n", libname);
exit(1);
}
#endif
}
options[opt_num++].optionString =
"-Djava.compiler=NONE"; /* disable JIT */
options[opt_num++].optionString =
"-Djava.class.path=."; /* user classes */
/*
options[opt_num++].optionString =
"-verbose:jni";
options[opt_num++].optionString =
"-Djava.library.path=c:\mylibs";
*/
for(i=0; i<opt_num; i++)
printf("jvm option[%d]: %s\n", i, options[i].optionString);
jvm_args.version = JNI_VERSION_1_2;
jvm_args.options = options;
jvm_args.nOptions = opt_num;
jvm_args.ignoreUnrecognized = 1;
/* Note that in the Java 2 SDK, there is no longer any need to call
* JNI_GetDefaultJavaVMInitArgs.
*/
res = JNI_CreateJavaVM(&jvm, (void **)&env, &jvm_args);
if (res == 0)
{
cls = (*env)->FindClass(env, argv[argidx]);
if (cls == 0) {
fprintf(stderr, "Can't find %s class\n", argv[argidx]);
exit(1);
}
printf("jvm calling class %s\n", argv[argidx]);
mid = (*env)->GetStaticMethodID(env, cls, "main", "([Ljava/lang/String;)V");
if (mid == 0) {
fprintf(stderr, "Can't find %s.main\n", argv[argidx]);
exit(1);
}
argidx++;
jstrdummy = (*env)->NewStringUTF(env, " ");
if (jstrdummy == 0) {
fprintf(stderr, "Out of memory\n");
exit(1);
}
if(argidx==argc)
{
jstrargs[jargnum] = jstrdummy;
printf("jvm calling jstrargs[%d]: %s\n",
jargnum, " ");
jargnum++;
}
for(; argidx<argc; argidx++, jargnum++)
{
jstrargs[jargnum] = (*env)->NewStringUTF(env, argv[argidx]);
if (jstrargs[jargnum] == 0) {
fprintf(stderr, "Out of memory\n");
exit(1);
}
printf("jvm calling jstrargs[%d]: %s\n",
jargnum, argv[argidx]);
}
if(jargnum>0)
{
jargs = (*env)->NewObjectArray(env, jargnum,
(*env)->FindClass(env, "java/lang/String"), jstrdummy);
if (jargs == 0) {
fprintf(stderr, "Out of memory\n");
exit(1);
}
for(i=0; i<jargnum; i++)
(*env)->SetObjectArrayElement(env, jargs,
i, jstrargs[i]);
(*env)->CallStaticVoidMethod(env, cls, mid, jargs);
}
(*jvm)->DestroyJavaVM(jvm);
}
#ifdef _X11_
if(lib!=NULL)
{
dlclose (lib);
lib = NULL;
}
#endif
#ifdef _WIN32_
if(lib!=NULL)
{
FreeLibrary(lib);
lib = NULL;
}
#endif
return 1;
}
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