/trunk/Examples/java/native/example.i

 1/* File : example.i */
 2%module example
 3
 4%{
 5#include <string.h>
 6
 7typedef struct point {
 8  int x;
 9  int y;
10} Point;
11
12
13Point *point_create(int x, int y) {
14  Point *p = (Point *) malloc(sizeof(Point));
15  p->x = x;
16  p->y = y;
17
18  return p;
19}
20
21static char *point_toString(char *format, Point *p) {
22  static char buf[80];
23
24  sprintf(buf, format, p->x, p->y);
25
26  return buf;
27}
28
29/* this function will be wrapped by SWIG */
30char *point_toString1(Point *p) {
31  return point_toString("(%d,%d)", p);
32}
33
34/* this one we wrapped manually*/
35JNIEXPORT jstring JNICALL Java_exampleJNI_point_1toString2(JNIEnv *jenv, jclass jcls, jlong jpoint) {
36    Point * p;
37    jstring result;
38
39    (void)jcls;
40
41    p = *(Point **)&jpoint;
42
43    result = (*jenv)->NewStringUTF(jenv, point_toString("[%d,%d]", p));
44
45    return result;
46}
47%}
48
49
50Point *point_create(int x, int y);
51char *point_toString1(Point *p);
52
53/* give access to free() for memory cleanup of the malloc'd Point */
54extern void free(void *memblock);
55
56%native(point_toString2) char *point_toString2(Point *p);