static status
callCv(CObj host, CPointer function, int argc, Any *argv)
{ status rval;
SendFunc f = (SendFunc) function->pointer;
int n;
for(n=0; n<argc; n++)
if ( isObject(argv[n]) )
addCodeReference(argv[n]);
switch(argc)
{ case 0: rval = (*f)(); break;
case 1: rval = (*f)(argv[0]); break;
case 2: rval = (*f)(argv[0], argv[1]); break;
case 3: rval = (*f)(argv[0], argv[1], argv[2]); break;
case 4: rval = (*f)(argv[0], argv[1], argv[2], argv[3]); break;
case 5: rval = (*f)(argv[0], argv[1], argv[2], argv[3], argv[4]); break;
case 6: rval = (*f)(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5]); break;
case 7: rval = (*f)(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6]); break;
case 8: rval = (*f)(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6], argv[7]); break;
case 9: rval = (*f)(argv[0], argv[1], argv[2], argv[3], argv[4],
argv[5], argv[6], argv[7], argv[8]); break;
default:
rval = errorPce(host, NAME_tooManyArguments, argc);
}
for(n=0; n<argc; n++)
if ( isObject(argv[n]) && !isFreedObj(argv[n]) )
delCodeReference(argv[n]);
return rval ? SUCCEED : FAIL;
}
static ssize_t
Swrite_object(void *handle, char *buf, size_t size)
{ OpenObject h = handle;
string s;
CharArray ca;
status rval;
Int where = toInt(h->point);
size_t advance;
if ( isFreedObj(h->object) )
{ errno = EIO;
return -1;
}
if ( h->encoding == ENC_WCHAR )
{ const wchar_t *wbuf = (const wchar_t*)buf;
const wchar_t *end = (const wchar_t*)&buf[size];
const wchar_t *f;
assert(size%sizeof(wchar_t) == 0);
advance = size/sizeof(wchar_t);
for(f=wbuf; f<end; f++)
{ if ( *f > 0xff )
break;
}
if ( f == end )
{ charA *asc = alloca(size);
charA *t = asc;
for(f=wbuf; f<end; )
*t++ = (charA)*f++;
str_set_n_ascii(&s, advance, (char*)asc);
} else
{ str_set_n_wchar(&s, advance, (wchar_t*)wbuf);
}
} else if ( h->encoding == ENC_OCTET )
{ advance = size;
str_set_n_ascii(&s, size, buf);
} else
{ assert(0);
errno = EIO;
return -1;
}
ca = StringToScratchCharArray(&s);
if ( (rval = send(h->object, NAME_writeAsFile, where, ca, EAV)) )
h->point += (long)advance;
doneScratchCharArray(ca);
if ( rval )
return size;
errno = EIO;
return -1;
}
int
pceExistsReference(uintptr_t ref)
{ Any addr = longToPointer(ref);
if ( !isProperObject(addr) || isFreedObj(addr) )
return PCE_FAIL;
return PCE_SUCCEED;
}
int
pceExistsAssoc(PceName assoc)
{ Any addr;
if ( !(addr = getObjectAssoc(assoc)) )
return PCE_FAIL;
if ( !isProperObject(addr) || isFreedObj(addr) )
return PCE_FAIL;
return PCE_SUCCEED;
}
status
unlinkLayoutInterface(Any obj)
{ LayoutInterface itf = obj;
if ( notNil(itf->image) && !isFreedObj(itf->image) )
{ Any nil = NIL;
return qadSendv(itf->image, NAME_layoutInterface, 1, &nil);
}
succeed;
}
static status
executeLabel(Label lb)
{ if ( notNil(lb->message) && notDefault(lb->message) )
{ statusLabel(lb, NAME_execute);
flushGraphical(lb);
forwardReceiverCode(lb->message, lb, EAV);
if ( !isFreedObj(lb) )
{ statusLabel(lb, NAME_inactive);
flushGraphical(lb);
}
}
succeed;
}
static int
Sclose_object(void *handle)
{ OpenObject h = handle;
if ( isFreedObj(h->object) )
{ errno = EIO;
return -1;
}
delCodeReference(h->object);
freeableObj(h->object);
unalloc(sizeof(*h), h);
return 0;
}
static Any
getCallHostv(Host host, Name selector, int argc, Any *argv)
{ Any rval;
int n;
for(n=0; n<argc; n++)
if ( isObject(argv[n]) )
addCodeReference(argv[n]);
rval = hostGet(host, selector, argc, argv);
for(n=0; n<argc; n++)
if ( isObject(argv[n]) && !isFreedObj(argv[n]) )
delCodeReference(argv[n]);
return rval;
}
static void
event_window(Widget w, XtPointer xsw, XtPointer xevent)
{ PceWindow sw = (PceWindow) xsw;
XEvent *event = (XEvent *)xevent;
pceMTLock(LOCK_PCE);
DEBUG(NAME_event, Cprintf("event_window(): X-event %d on %s\n",
event->xany.type, pp(sw)));
if ( isFreeingObj(sw) || isFreedObj(sw) || sw->sensitive == OFF )
{ pceMTUnlock(LOCK_PCE);
return;
}
ServiceMode(is_service_window(sw),
{ AnswerMark mark;
markAnswerStack(mark);
x_event_window(sw, event);
rewindAnswerStack(mark, NIL);
});
static long
Sseek_object(void *handle, long pos, int whence)
{ OpenObject h = handle;
Int size;
int usize = (h->encoding == ENC_WCHAR ? sizeof(wchar_t) : 1);
pos /= usize;
if ( isFreedObj(h->object) )
{ errno = EIO;
return -1;
}
switch(whence)
{ case SIO_SEEK_SET:
h->point = pos;
break;
case SIO_SEEK_CUR:
h->point += pos; /* check for end!? */
break;
case SIO_SEEK_END:
{ if ( hasGetMethodObject(h->object, NAME_sizeAsFile) &&
(size = get(h->object, NAME_sizeAsFile, EAV)) )
{ h->point = valInt(size) - pos;
break;
} else
{ errno = EPIPE; /* better idea? */
return -1;
}
}
default:
{ errno = EINVAL;
return -1;
}
}
return h->point * usize;
}
static ssize_t
Sread_object(void *handle, char *buf, size_t size)
{ OpenObject h = handle;
Any argv[2];
CharArray sub;
int chread;
size_t advance;
if ( isFreedObj(h->object) )
{ errno = EIO;
return -1;
}
if ( h->encoding == ENC_WCHAR )
{ advance = size/sizeof(wchar_t);
} else if ( h->encoding == ENC_OCTET )
{ advance = size;
} else
{ assert(0);
errno = EIO;
return -1;
}
argv[0] = toInt(h->point);
argv[1] = toInt(advance);
if ( (sub = getv(h->object, NAME_readAsFile, 2, argv)) &&
instanceOfObject(sub, ClassCharArray) )
{ String s = &sub->data;
assert(s->size <= advance);
if ( h->encoding == ENC_WCHAR )
{ if ( isstrA(s) )
{ charW *dest = (charW*)buf;
const charA *f = s->s_textA;
const charA *e = &f[s->size];
while(f<e)
*dest++ = *f++;
} else
{ memcpy(buf, s->s_textW, s->size*sizeof(charW));
}
chread = s->size * sizeof(wchar_t);
} else
{ if ( isstrA(s) )
{ memcpy(buf, s->s_textA, s->size);
} else
{ errno = EIO;
chread = -1;
}
chread = s->size;
}
h->point += s->size;
} else
{ errno = EIO;
chread = -1;
}
return chread;
}
