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/*
** macglue - A couple of mac-specific routines often needed.
**
** Jack Jansen, CWI, 1994.
** Some routines by Guido, moved here from macosmodule.c
** (since they are useable by other modules as well).
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "Python.h"
#include "macglue.h"
#include <OSUtils.h> /* for Set(Current)A5 */
#include <Resources.h>
#include <Memory.h>
#include <Events.h>
#include <Windows.h>
#include <Desk.h>
/* We should include Errors.h here, but it has a name conflict
** with the python errors.h. */
#define fnfErr -43
/* Convert C to Pascal string. Returns pointer to static buffer. */
unsigned char *
Pstring(char *str)
{
static Str255 buf;
int len;
len = strlen(str);
if (len > 255)
len = 255;
buf[0] = (unsigned char)len;
strncpy((char *)buf+1, str, len);
return buf;
}
/* Replace strerror with something that might work */
char *macstrerror(int err)
{
static char buf[256];
Handle h;
char *str;
h = GetResource('Estr', err);
if ( h ) {
HLock(h);
str = (char *)*h;
memcpy(buf, str+1, (unsigned char)str[0]);
HUnlock(h);
ReleaseResource(h);
} else {
sprintf(buf, "Mac OS error code %d", err);
}
return buf;
}
/* Set a MAC-specific error from errno, and return NULL; return None if no error */
PyObject *
PyErr_Mac(PyObject *eobj, int err)
{
char *msg;
PyObject *v;
if (err == 0 && !PyErr_Occurred()) {
Py_INCREF(Py_None);
return Py_None;
}
if (err == -1 && PyErr_Occurred())
return NULL;
msg = macstrerror(err);
v = Py_BuildValue("(is)", err, msg);
PyErr_SetObject(eobj, v);
Py_DECREF(v);
return NULL;
}
/*
** Idle routine for busy-wait loops.
** This is rather tricky: if we see an event we check whether it is
** for somebody else (i.e. a click outside our windows) and, if so,
** we pass the event on (so the user can switch processes). However,
** by doing this we loose events meant for our windows. Too bad, I guess...
*/
int
PyMac_Idle()
{
EventRecord ev;
WindowPtr wp;
SystemTask();
if ( intrpeek() )
return 0;
if ( GetNextEvent(0xffff, &ev) ) {
if ( ev.what == mouseDown ) {
if ( FindWindow(ev.where, &wp) == inSysWindow )
SystemClick(&ev, wp);
}
}
return 1;
}
/* Convert a ResType argument */
int
PyMac_GetOSType(PyObject *v, ResType *pr)
{
if (!PyString_Check(v) || PyString_Size(v) != 4) {
PyErr_SetString(PyExc_TypeError,
"OSType arg must be string of 4 chars");
return 0;
}
memcpy((char *)pr, PyString_AsString(v), 4);
return 1;
}
/* Convert a Str255 argument */
int
PyMac_GetStr255(PyObject *v, Str255 pbuf)
{
int len;
if (!PyString_Check(v) || (len = PyString_Size(v)) > 255) {
PyErr_SetString(PyExc_TypeError,
"Str255 arg must be string of at most 255 chars");
return 0;
}
pbuf[0] = len;
memcpy((char *)(pbuf+1), PyString_AsString(v), len);
return 1;
}
/*
** Convert anything resembling an FSSpec argument
** NOTE: This routine will fail on pre-sys7 machines.
** The caller is responsible for not calling this routine
** in those cases (which is fine, since everyone calling
** this is probably sys7 dependent anyway).
*/
int
PyMac_GetFSSpec(PyObject *v, FSSpec *fs)
{
Str255 path;
short refnum;
long parid;
OSErr err;
if ( PyString_Check(v) ) {
/* It's a pathname */
if( !PyArg_Parse(v, "O&", PyMac_GetStr255, &path) )
return 0;
refnum = 0; /* XXXX Should get CurWD here... */
parid = 0;
} else {
if( !PyArg_Parse(v, "(hlO&); FSSpec should be fullpath or (vrefnum,dirid,path)",
&refnum, &parid, PyMac_GetStr255, &path)) {
return 0;
}
}
err = FSMakeFSSpec(refnum, parid, path, fs);
if ( err && err != fnfErr ) {
PyErr_Mac(PyExc_ValueError, err);
return 0;
}
return 1;
}
/*
** Return a python object that describes an FSSpec
*/
PyObject *
PyMac_BuildFSSpec(FSSpec *fs)
{
return Py_BuildValue("(iis#)", fs->vRefNum, fs->parID, &fs->name[1], fs->name[0]);
}
/* Convert an OSType value to a 4-char string object */
PyObject *
PyMac_BuildOSType(OSType t)
{
return PyString_FromStringAndSize((char *)&t, 4);
}
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