cni converting String args[]

Fri Dec 10 17:22:00 GMT 2004

* littlejohn@paranoici.org (littlejohn@paranoici.org) ha scritto:
> * Andrew Haley (aph@redhat.com) ha scritto:
> > > arguments[i] = (char *) elements(argsElements[i]->getBytes());
> > 
> > If you want chars, you'll need an encoding -- elements returns a
> > jchar*. Try JvGetStringUTFRegion.
>> ok, I'll let you know

jint A::init(JArray< ::java::lang::String *> *args) {
 int argc = 0;
 char* arguments[argc];
 if (args != NULL) // It's a very bad day otherwise
 {
 argc = args->length;
 arguments[argc];
 /*
 * convert the JArray<String*>* in char**
 * so in a way suitable for VLC_Init
 */
 ::java::lang::String** argsElements = elements(args);
 for (int i = 0; i < argc; i++) {
 ::java::lang::System::out->println(argsElements[i]->length());
 JvGetStringUTFRegion(argsElements[i], 0,
 argsElements[i]->length(), arguments[i]);
 printf("library: %s\n", arguments[i]);
 }
 }
 return 0;
}
 does not work. If i issue the command:
% A --help --helpp
 i get
6 (the length of --help)
library: --help (the printf)
7 (the length of --helpp)
Exception in thread "main" java.lang.NullPointerException
 debugging with gdb, I see a strange thing. Maybe related to the
gc. On the second iteration, just after the JvGetStringUTFRegion the
arguments array is:
(gdb) print arguments 
1ドル = {0x0, 0x0}
 I can understand why.
 lj