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/* -----------------------------------------------------------------------------
* various.i
*
* SWIG Typemap library for Java.
* Various useful typemaps.
* ----------------------------------------------------------------------------- */
/*
* char **STRING_ARRAY typemaps.
* These typemaps are for C String arrays which are NULL terminated.
* char *values[] = { "one", "two", "three", NULL }; // note NULL
* char ** is mapped to a Java String[].
*
* Example usage wrapping:
* %apply char **STRING_ARRAY { char **input };
* char ** foo(char **input);
*
* Java usage:
* String numbers[] = { "one", "two", "three" };
* String[] ret = modulename.foo( numbers };
*/
%typemap(jni) char **STRING_ARRAY "jobjectArray"
%typemap(jtype) char **STRING_ARRAY "String[]"
%typemap(jstype) char **STRING_ARRAY "String[]"
%typemap(in) char **STRING_ARRAY (jint size) {
int i = 0;
if ($input) {
size = JCALL1(GetArrayLength, jenv, $input);
#ifdef __cplusplus
$1 = new char*[size+1];
#else
$1 = (char **)malloc((size+1) * sizeof(char *));
#endif
for (i = 0; i<size; i++) {
jstring j_string = (jstring)JCALL2(GetObjectArrayElement, jenv, $input, i);
const char *c_string = JCALL2(GetStringUTFChars, jenv, j_string, 0);
#ifdef __cplusplus
$1[i] = new char [strlen(c_string)+1];
#else
$1[i] = (char *)malloc((strlen(c_string)+1) * sizeof(const char *));
#endif
strcpy($1[i], c_string);
JCALL2(ReleaseStringUTFChars, jenv, j_string, c_string);
JCALL1(DeleteLocalRef, jenv, j_string);
}
$1[i] = 0;
} else {
$1 = 0;
size = 0;
}
}
%typemap(freearg) char **STRING_ARRAY {
int i;
for (i=0; i<size$argnum; i++)
#ifdef __cplusplus
delete[] $1[i];
delete[] $1;
#else
free($1[i]);
free($1);
#endif
}
%typemap(out) char **STRING_ARRAY {
if ($1) {
int i;
jsize len=0;
jstring temp_string;
const jclass clazz = JCALL1(FindClass, jenv, "java/lang/String");
while ($1[len]) len++;
$result = JCALL3(NewObjectArray, jenv, len, clazz, NULL);
/* exception checking omitted */
for (i=0; i<len; i++) {
temp_string = JCALL1(NewStringUTF, jenv, *$1++);
JCALL3(SetObjectArrayElement, jenv, $result, i, temp_string);
JCALL1(DeleteLocalRef, jenv, temp_string);
}
}
}
%typemap(javain) char **STRING_ARRAY "$javainput"
%typemap(javaout) char **STRING_ARRAY {
return $jnicall;
}
/*
* char **STRING_OUT typemaps.
* These are typemaps for returning strings when using a C char ** parameter type.
* The returned string appears in the 1st element of the passed in Java String array.
*
* Example usage wrapping:
* %apply char **STRING_OUT { char **string_out };
* void foo(char **string_out);
*
* Java usage:
* String stringOutArray[] = { "" };
* modulename.foo(stringOutArray);
* System.out.println( stringOutArray[0] );
*/
%typemap(jni) char **STRING_OUT "jobjectArray"
%typemap(jtype) char **STRING_OUT "String[]"
%typemap(jstype) char **STRING_OUT "String[]"
%typemap(javain) char **STRING_OUT "$javainput"
%typemap(in) char **STRING_OUT($*1_ltype temp) {
if (!$input) {
SWIG_JavaThrowException(jenv, SWIG_JavaNullPointerException, "array null");
return $null;
}
if (JCALL1(GetArrayLength, jenv, $input) == 0) {
SWIG_JavaThrowException(jenv, SWIG_JavaIndexOutOfBoundsException, "Array must contain at least 1 element");
return $null;
}
$1 = &temp;
*$1 = 0;
}
%typemap(argout) char **STRING_OUT {
jstring jnewstring = NULL;
if ($1) {
jnewstring = JCALL1(NewStringUTF, jenv, *$1);
}
JCALL3(SetObjectArrayElement, jenv, $input, 0, jnewstring);
}
/*
* char *BYTE typemaps.
* These are input typemaps for mapping a Java byte[] array to a C char array.
* Note that as a Java array is used and thus passeed by reference, the C routine
* can return data to Java via the parameter.
*
* Example usage wrapping:
* void foo(char *array);
*
* Java usage:
* byte b[] = new byte[20];
* modulename.foo(b);
*/
%typemap(jni) char *BYTE "jbyteArray"
%typemap(jtype) char *BYTE "byte[]"
%typemap(jstype) char *BYTE "byte[]"
%typemap(in) char *BYTE {
$1 = (char *) JCALL2(GetByteArrayElements, jenv, $input, 0);
}
%typemap(argout) char *BYTE {
JCALL3(ReleaseByteArrayElements, jenv, $input, (jbyte *) $1, 0);
}
%typemap(javain) char *BYTE "$javainput"
/* Prevent default freearg typemap from being used */
%typemap(freearg) char *BYTE ""
/*
* unsigned char *NIOBUFFER typemaps.
* This is for mapping Java nio buffers to C char arrays.
* It is useful for performance critical code as it reduces the memory copy an marshaling overhead.
* Note: The Java buffer has to be allocated with allocateDirect.
*
* Example usage wrapping:
* %apply unsigned char *NIOBUFFER { unsigned char *buf };
* void foo(unsigned char *buf);
*
* Java usage:
* java.nio.ByteBuffer b = ByteBuffer.allocateDirect(20);
* modulename.foo(b);
*/
%typemap(jni) unsigned char *NIOBUFFER "jobject"
%typemap(jtype) unsigned char *NIOBUFFER "java.nio.ByteBuffer"
%typemap(jstype) unsigned char *NIOBUFFER "java.nio.ByteBuffer"
%typemap(javain,
pre=" assert $javainput.isDirect() : \"Buffer must be allocated direct.\";") unsigned char *NIOBUFFER "$javainput"
%typemap(javaout) unsigned char *NIOBUFFER {
return $jnicall;
}
%typemap(in) unsigned char *NIOBUFFER {
$1 = (unsigned char *) JCALL1(GetDirectBufferAddress, jenv, $input);
if ($1 == NULL) {
SWIG_JavaThrowException(jenv, SWIG_JavaRuntimeException, "Unable to get address of a java.nio.ByteBuffer direct byte buffer. Buffer must be a direct buffer and not a non-direct buffer.");
}
}
%typemap(memberin) unsigned char *NIOBUFFER {
if ($input) {
$1 = $input;
} else {
$1 = 0;
}
}
%typemap(freearg) unsigned char *NIOBUFFER ""
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