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#include <string.h>
#include "jnitools.h"
#include "jawt_misc.h"
#include "gltool.h"
#ifdef __BUILTIN_VA_ARG_INCR
/* Special stuff for the SunOS port ... */
va_list __builtin_va_arg_incr = 0;
va_list __builtin_va_alist = 0;
#endif
static int isinit = 0;
static jclass classString=0;
static jmethodID String_getBytes_ID=0;
static jmethodID String_init_ID=0;
static int init(JNIEnv *env)
{
classString = (*env)->FindClass(env, "java/lang/String");
if(classString)
{
String_getBytes_ID =
(*env)->GetMethodID(env, classString, "getBytes", "()[B");
if(!String_getBytes_ID) return 0;
String_init_ID = (*env)->GetMethodID(env, classString, "<init>", "([B)V");
if(!String_init_ID) return 0;
} else return 0;
return 1;
}
/* Throw an exception by name */
void LIBAPIENTRY jnitoolsThrowByName(JNIEnv *env, const char *name, const char *msg, ...)
{
static char buffer[1024];
va_list va;
jclass cls = 0;
if(!isinit && init(env)) isinit=1;
va_start(va, msg);
#ifdef NO_VSNPRINTF
(void) vsprintf(buffer, msg, va); /* dangerous -> stack overwrite ... */
#else
(void) vsnprintf(buffer, 1023, msg, va);
#endif
buffer[1023]=0;
va_end(va);
cls = (*env)->FindClass(env, name);
if (cls != 0) /* Otherwise an exception has already been thrown */
(*env)->ThrowNew(env, cls, buffer);
/* It's a good practice to clean up the local references. */
(*env)->DeleteLocalRef(env, cls);
}
/* Translates a Java string to a C string using the String.getBytes
* method, which uses default local encoding.
*/
char * LIBAPIENTRY jnitoolsGetJavaString(JNIEnv *env, jstring jstr)
{
jbyteArray hab = 0;
jthrowable exc;
char *result = 0;
if(!isinit && init(env)) isinit=1;
hab = (*env)->CallObjectMethod(env, jstr, String_getBytes_ID);
exc = (*env)->ExceptionOccurred(env);
if (!exc) {
jint len = (*env)->GetArrayLength(env, hab);
result = (char *)malloc(len + 1);
if (result == 0) {
jnitoolsThrowByName(env, "java/lang/OutOfMemoryError", 0);
(*env)->DeleteLocalRef(env, hab);
return 0;
}
(*env)->GetByteArrayRegion(env, hab, 0, len, (jbyte *)result);
result[len] = 0; /* NULL-terminate */
} else {
(*env)->DeleteLocalRef(env, exc);
}
(*env)->DeleteLocalRef(env, hab);
return result;
}
/**
* signature: e.g. "(II[I)V" for "void <name>(int, int, int[])"
*
* argIndex: 0-n argument index of the method signature
* -1 return type
*/
static JavaBasicType _jnitoolsGetJavaBasicTypeAndArgLen(JNIEnv *env,
const char * signature, int argIndex,
const char * errText,
int * argLen)
{
int i, j, arg, argend, arraydim;
char c, *help;
JavaBasicType jbt = T_NOPE;
if(!isinit && init(env)) isinit=1;
*argLen=0;
if(signature==NULL) return T_NOPE;
j=strlen(signature);
for(i=0, arg=0, argend=0, arraydim=0; i<j; i++)
{
c=signature[i];
if(c=='(') continue;
if(c==')') { argend=1; continue; }
if(c=='[') { arraydim++; continue; }
switch (c)
{
case 'L':
help = strchr(signature+i, ';');
if(help==NULL)
{
jnitoolsThrowByName(env,
"java/lang/IllegalArgumentException",
"%s(arg #%d): invalid signature (inv. object) at %d <%s>\n",
errText, argIndex+1, i, signature);
return T_NOPE;
}
jbt = (arraydim==0)?T_OBJECT:T_OBJECT_ARRAY;
i = help-signature;
arraydim=0;
break;
case 'V':
if(arraydim>0)
{
jnitoolsThrowByName(env,
"java/lang/IllegalArgumentException",
"%s(arg #%d): invalid signature (void array) at %d <%s>\n",
errText, argIndex+1, i, signature);
return T_NOPE;
}
jbt = T_VOID;
arraydim=0;
break;
case 'Z':
jbt = (arraydim==0)?T_BOOLEAN:T_BOOLEAN_ARRAY;
arraydim=0;
break;
case 'B':
jbt = (arraydim==0)?T_BYTE:T_BYTE_ARRAY;
arraydim=0;
break;
case 'C':
jbt = (arraydim==0)?T_CHAR:T_CHAR_ARRAY;
arraydim=0;
break;
case 'S':
jbt = (arraydim==0)?T_SHORT:T_SHORT_ARRAY;
arraydim=0;
break;
case 'I':
jbt = (arraydim==0)?T_INT:T_INT_ARRAY;
arraydim=0;
break;
case 'J':
jbt = (arraydim==0)?T_LONG:T_LONG_ARRAY;
arraydim=0;
break;
case 'F':
jbt = (arraydim==0)?T_FLOAT:T_FLOAT_ARRAY;
arraydim=0;
break;
case 'D':
jbt = (arraydim==0)?T_DOUBLE:T_DOUBLE_ARRAY;
arraydim=0;
break;
}
if( (argIndex >=0 && arg==argIndex) ||
(argIndex==-1 && argend==1)
)
{
*argLen=arg;
return jbt;
}
arg++;
}
return T_NOPE;
}
/**
* signature: e.g. "(II[I)V" for "void <name>(int, int, int[])"
*
* argIndex: 0-n argument index of the method signature
* -1 return type
*/
int LIBAPIENTRY jnitoolsGetArgNumber(JNIEnv *env,
const char * signature,
const char * errText)
{
int num = 0;
(void) _jnitoolsGetJavaBasicTypeAndArgLen(env,
signature, -1,
errText,
&num);
return num;
}
/**
* signature: e.g. "(II[I)V" for "void <name>(int, int, int[])"
*
* argIndex: 0-n argument index of the method signature
* -1 return type
*/
JavaBasicType LIBAPIENTRY jnitoolsGetJavaBasicType(JNIEnv *env,
const char * signature, int argIndex,
const char * errText)
{
int num = 0;
JavaBasicType jbt = _jnitoolsGetJavaBasicTypeAndArgLen(env,
signature, argIndex,
errText,
&num);
return jbt;
}
jarray LIBAPIENTRY jnitoolsNativeArray2JavaArray (JNIEnv *env, JavaBasicType jbt,
void *data, int dataArrayLen,
const char * errText, int arg)
{
jarray res = 0;
if(!isinit && init(env)) isinit=1;
switch(jbt)
{
case T_BOOLEAN_ARRAY:
res = (*env)->NewBooleanArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetBooleanArrayRegion(env, (jbooleanArray)res,
0, dataArrayLen,
(jboolean*)data);
break;
case T_BYTE_ARRAY:
res = (*env)->NewByteArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetByteArrayRegion(env, (jbyteArray)res,
0, dataArrayLen, (jbyte*)data);
break;
case T_CHAR_ARRAY:
res = (*env)->NewCharArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetCharArrayRegion(env, (jcharArray)res,
0, dataArrayLen, (jchar*)data);
break;
case T_SHORT_ARRAY:
res = (*env)->NewShortArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetShortArrayRegion(env, (jshortArray)res,
0, dataArrayLen, (jshort*)data);
break;
case T_INT_ARRAY:
res = (*env)->NewIntArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetIntArrayRegion(env, (jintArray)res,
0, dataArrayLen, (jint*)data);
break;
case T_LONG_ARRAY:
res = (*env)->NewLongArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetLongArrayRegion(env, (jlongArray)res,
0, dataArrayLen, (jlong*)data);
break;
case T_FLOAT_ARRAY:
res = (*env)->NewFloatArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetFloatArrayRegion(env, (jfloatArray)res,
0, dataArrayLen, (jfloat*)data);
break;
case T_DOUBLE_ARRAY:
res = (*env)->NewDoubleArray(env, dataArrayLen);
if(data!=NULL)
(*env)->SetDoubleArrayRegion(env, (jdoubleArray)res,
0, dataArrayLen, (jdouble*)data);
break;
default:
jnitoolsThrowByName(env, "java/lang/IllegalArgumentException",
"%s(arg #%d): Type is not an array",
errText, arg);
return 0;
}
return res;
}
jarray LIBAPIENTRY jnitoolsNativePtrArray2JavaArray (JNIEnv *env,
JavaBasicType jbt,
void *data[/*pointerNumber*/],
int pointerNumber,
int dataArrayLen,
const char * errText, int arg)
{
unsigned char * buffer = NULL;
jarray res = 0;
int i;
int setLenElems = dataArrayLen/pointerNumber;
int setLenBytes = 0;
if(!isinit && init(env)) isinit=1;
switch(jbt)
{
case T_BYTE_ARRAY:
setLenBytes = setLenElems * sizeof(jbyte) ;
break;
case T_CHAR_ARRAY:
setLenBytes = setLenElems * sizeof(jchar) ;
break;
case T_SHORT_ARRAY:
setLenBytes = setLenElems * sizeof(jshort) ;
break;
case T_BOOLEAN_ARRAY:
setLenBytes = setLenElems * sizeof(jboolean) ;
break;
case T_INT_ARRAY:
setLenBytes = setLenElems * sizeof(jint) ;
break;
case T_LONG_ARRAY:
setLenBytes = setLenElems * sizeof(jlong) ;
break;
case T_FLOAT_ARRAY:
setLenBytes = setLenElems * sizeof(jfloat) ;
break;
case T_DOUBLE_ARRAY:
setLenBytes = setLenElems * sizeof(jdouble) ;
break;
default:
jnitoolsThrowByName(env, "java/lang/IllegalArgumentException",
"%s(arg #%d): Type is not an array",
errText, arg);
return 0;
}
buffer = calloc (pointerNumber, setLenBytes);
if(buffer==NULL)
{
jnitoolsThrowByName(env, "java/lang/Exception",
"%s(arg #%d): Out of memory",
errText, arg);
return 0;
}
for(i=0; data!=NULL && i<pointerNumber; i++)
{
if(data[i]!=NULL)
{
memcpy(buffer+i*setLenBytes,
data[i], setLenBytes);
} else {
memset(buffer+i*setLenBytes, 0, setLenBytes);
}
}
res = jnitoolsNativeArray2JavaArray (env, jbt,
buffer, dataArrayLen,
errText, arg);
free(buffer);
return res;
}
void LIBAPIENTRY jnitoolsReleaseJavaArray2NativeArray (JNIEnv *env, jarray arr, JavaBasicType jbt,
void *data, int dataArrayLen,
const char * errText, int arg)
{
int len = (*env)->GetArrayLength(env, arr);
int lenb = 0;
void * arrdata = 0;
if(!isinit && init(env)) isinit=1;
if(data==NULL) return;
if(len!=dataArrayLen)
{
jnitoolsThrowByName(env, "java/lang/IllegalArgumentException",
"%s(arg #%d): Array-Length differs of Java-Callback input(%d) vs output(%d)", errText, arg, dataArrayLen, len);
return;
}
arrdata = (void *) (*env)->GetPrimitiveArrayCritical(env, arr, 0);
switch(jbt)
{
case T_BOOLEAN_ARRAY:
lenb = len*sizeof(jboolean);
break;
case T_BYTE_ARRAY:
lenb = len*sizeof(jbyte);
break;
case T_CHAR_ARRAY:
lenb = len*sizeof(jchar);
break;
case T_SHORT_ARRAY:
lenb = len*sizeof(jshort);
break;
case T_INT_ARRAY:
lenb = len*sizeof(jint);
break;
case T_LONG_ARRAY:
lenb = len*sizeof(jlong);
break;
case T_FLOAT_ARRAY:
lenb = len*sizeof(jfloat);
break;
case T_DOUBLE_ARRAY:
lenb = len*sizeof(jdouble);
break;
default:
jnitoolsThrowByName(env, "java/lang/IllegalArgumentException",
"%s(arg #%d): Type is not an array",
errText, arg);
}
memcpy (data, arrdata, lenb);
(*env)->ReleasePrimitiveArrayCritical(env, arr, arrdata, JNI_ABORT);
}
void LIBAPIENTRY jnitoolsReleaseJavaArray2NativeArrayPtr (JNIEnv *env,
jarray arr,
JavaBasicType jbt,
void *data[/*pointerNumber*/],
int pointerNumber,
int dataArrayLen,
const char * errText,
int arg)
{
int len = (*env)->GetArrayLength(env, arr);
unsigned char * arrdata = 0;
int i;
int setLenElems = dataArrayLen/pointerNumber;
int setLenBytes = 0;
if(!isinit && init(env)) isinit=1;
if(data==NULL) return;
if(len!=dataArrayLen)
{
jnitoolsThrowByName(env, "java/lang/IllegalArgumentException",
"%s(arg #%d): Array-Length differs of Java-Callback input(%d) vs output(%d)", errText, arg, dataArrayLen, len);
return;
}
arrdata = (unsigned char *)
(*env)->GetPrimitiveArrayCritical(env, arr, 0);
switch(jbt)
{
case T_BOOLEAN_ARRAY:
setLenBytes = setLenElems * sizeof(jboolean);
break;
case T_BYTE_ARRAY:
setLenBytes = setLenElems * sizeof(jbyte);
break;
case T_CHAR_ARRAY:
setLenBytes = setLenElems * sizeof(jchar);
break;
case T_SHORT_ARRAY:
setLenBytes = setLenElems * sizeof(jshort);
break;
case T_INT_ARRAY:
setLenBytes = setLenElems * sizeof(jint);
break;
case T_LONG_ARRAY:
setLenBytes = setLenElems * sizeof(jlong);
break;
case T_FLOAT_ARRAY:
setLenBytes = setLenElems * sizeof(jfloat);
break;
case T_DOUBLE_ARRAY:
setLenBytes = setLenElems * sizeof(jdouble);
break;
default:
jnitoolsThrowByName(env, "java/lang/IllegalArgumentException",
"%s(arg #%d): Type is not an array", errText, arg);
}
for(i=0; i<pointerNumber; i++)
if(data[i]!=NULL)
memcpy(data[i], arrdata+i*setLenBytes,
setLenBytes);
(*env)->ReleasePrimitiveArrayCritical(env, arr, arrdata, JNI_ABORT);
}
void * LIBAPIENTRY jnitoolsCreateNativeArray (JavaBasicType jbt, int dataArrayLen, const char * errText)
{
void * arrdata = 0;
(void)errText;
switch(jbt)
{
case T_BOOLEAN_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(int));
break;
case T_BYTE_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(char));
break;
case T_CHAR_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(char));
break;
case T_SHORT_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(short));
break;
case T_INT_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(int));
break;
case T_LONG_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(long));
break;
case T_FLOAT_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(float));
break;
case T_DOUBLE_ARRAY:
arrdata = calloc(dataArrayLen, sizeof(double));
break;
default:
return 0;
}
return arrdata;
}
JNIEXPORT jint JNICALL
JNI_OnLoad(JavaVM * vm, void *reserved)
{
return JNI_VERSION_1_2;
}
JNIEXPORT void JNICALL
JNI_OnUnload(JavaVM *vm, void *reserved)
{
unloadGLLibrary();
jawt_unload();
}
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