//export udf_fileexists_go_init
func udf_fileexists_go_init(initid *C.UDF_INIT, args *C.UDF_ARGS, message *C.char) C.my_bool {
if args.arg_count != 1 {
msg := "udf_fileexists_go() requires one string argument\n"
C.strcpy(message, C.CString(msg))
return 1
}
return 0
}
func strcpy(dst *C.char, capacity int, src string) error {
if 0 == len(src) {
return nil
}
if capacity < len(src) {
return errors.New("string too long.")
}
s := C.CString(src)
//IncrementMemory()
C.strcpy(dst, s)
C.free(unsafe.Pointer(s))
//DecrementMemory()
return nil
}
func main() {
p := C.malloc(C.size_t(1))
if p == nil {
C.perror(C.CString("malloc failure"))
}
defer C.free(p)
C.strcpy((*C.char)(p), (*C.char)(C.CString("123")))
C.strcat((*C.char)(p), C.CString("233"))
fmt.Printf(C.GoString((*C.char)(p)))
ts := C.malloc(C.size_t(unsafe.Sizeof(C.struct_Test{})))
if ts == nil {
C.perror(C.CString("malloc struct"))
}
defer C.free(ts)
}
//export PutMemberDescription
func PutMemberDescription(objIdx C.uint32_t, ifIdx C.uint32_t,
memberIdx C.uint32_t, argIdx C.uint32_t,
language *C.char, dest *C.char, maxlen C.uint32_t) {
desc := memberDescriptionProvider(int(objIdx), int(ifIdx), int(memberIdx), int(argIdx), C.GoString(language))
if len(desc) >= int(maxlen) {
desc = desc[0:int(maxlen)]
}
buff := C.CString(desc)
defer C.free(unsafe.Pointer(buff))
C.strcpy(dest, buff)
// for i := 0; i < len(desc) && i < int(maxlen); i++ {
// dest = C.char(desc[i])
// }
}
func copyStringToCPointer(text string, target *C.char) {
cMsg := C.CString(text)
defer C.free(unsafe.Pointer(cMsg))
C.strcpy(target, cMsg)
}