/Python/mactoolboxglue.c
http://unladen-swallow.googlecode.com/ · C · 474 lines · 344 code · 67 blank · 63 comment · 48 complexity · 57b7c6e01f02cf2d0a9174b0371dd76d MD5 · raw file
- /***********************************************************
- Copyright 1991-1997 by Stichting Mathematisch Centrum, Amsterdam,
- The Netherlands.
- All Rights Reserved
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior permission.
- STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
- THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
- FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- ******************************************************************/
- #include "Python.h"
- #include "pymactoolbox.h"
- #include <arpa/inet.h> /* for ntohl, htonl */
- /* Like strerror() but for Mac OS error numbers */
- char *
- PyMac_StrError(int err)
- {
- static char buf[256];
- PyObject *m;
- PyObject *rv;
- m = PyImport_ImportModuleNoBlock("MacOS");
- if (!m) {
- if (Py_VerboseFlag)
- PyErr_Print();
- PyErr_Clear();
- rv = NULL;
- }
- else {
- rv = PyObject_CallMethod(m, "GetErrorString", "i", err);
- if (!rv)
- PyErr_Clear();
- }
- if (!rv) {
- buf[0] = '\0';
- }
- else {
- char *input = PyString_AsString(rv);
- if (!input) {
- PyErr_Clear();
- buf[0] = '\0';
- } else {
- strncpy(buf, input, sizeof(buf) - 1);
- buf[sizeof(buf) - 1] = '\0';
- }
- Py_DECREF(rv);
- }
- Py_XDECREF(m);
- return buf;
- }
- /* Exception object shared by all Mac specific modules for Mac OS errors */
- PyObject *PyMac_OSErrException;
- /* Initialize and return PyMac_OSErrException */
- PyObject *
- PyMac_GetOSErrException(void)
- {
- if (PyMac_OSErrException == NULL)
- PyMac_OSErrException = PyErr_NewException("MacOS.Error", NULL, NULL);
- return PyMac_OSErrException;
- }
- /* 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 = PyMac_StrError(err);
- v = Py_BuildValue("(is)", err, msg);
- PyErr_SetObject(eobj, v);
- Py_DECREF(v);
- return NULL;
- }
- /* Call PyErr_Mac with PyMac_OSErrException */
- PyObject *
- PyMac_Error(OSErr err)
- {
- return PyErr_Mac(PyMac_GetOSErrException(), err);
- }
- #ifndef __LP64__
- OSErr
- PyMac_GetFullPathname(FSSpec *fss, char *path, int len)
- {
- PyObject *fs, *exc;
- PyObject *rv = NULL;
- char *input;
- OSErr err = noErr;
- *path = '\0';
- fs = PyMac_BuildFSSpec(fss);
- if (!fs)
- goto error;
- rv = PyObject_CallMethod(fs, "as_pathname", "");
- if (!rv)
- goto error;
- input = PyString_AsString(rv);
- if (!input)
- goto error;
- strncpy(path, input, len - 1);
- path[len - 1] = '\0';
- Py_XDECREF(rv);
- Py_XDECREF(fs);
- return err;
- error:
- exc = PyErr_Occurred();
- if (exc && PyErr_GivenExceptionMatches(exc,
- PyMac_GetOSErrException())) {
- PyObject *args = PyObject_GetAttrString(exc, "args");
- if (args) {
- char *ignore;
- PyArg_ParseTuple(args, "is", &err, &ignore);
- Py_XDECREF(args);
- }
- }
- if (err == noErr)
- err = -1;
- PyErr_Clear();
- Py_XDECREF(rv);
- Py_XDECREF(fs);
- return err;
- }
- #endif /* !__LP64__ */
- /* Convert a 4-char string object argument to an OSType value */
- int
- PyMac_GetOSType(PyObject *v, OSType *pr)
- {
- uint32_t tmp;
- if (!PyString_Check(v) || PyString_Size(v) != 4) {
- PyErr_SetString(PyExc_TypeError,
- "OSType arg must be string of 4 chars");
- return 0;
- }
- memcpy((char *)&tmp, PyString_AsString(v), 4);
- *pr = (OSType)ntohl(tmp);
- return 1;
- }
- /* Convert an OSType value to a 4-char string object */
- PyObject *
- PyMac_BuildOSType(OSType t)
- {
- uint32_t tmp = htonl((uint32_t)t);
- return PyString_FromStringAndSize((char *)&tmp, 4);
- }
- /* Convert an NumVersion value to a 4-element tuple */
- PyObject *
- PyMac_BuildNumVersion(NumVersion t)
- {
- return Py_BuildValue("(hhhh)", t.majorRev, t.minorAndBugRev, t.stage, t.nonRelRev);
- }
- /* Convert a Python string object to a Str255 */
- 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 a Str255 to a Python string object */
- PyObject *
- PyMac_BuildStr255(Str255 s)
- {
- if ( s == NULL ) {
- PyErr_SetString(PyExc_SystemError, "Str255 pointer is NULL");
- return NULL;
- }
- return PyString_FromStringAndSize((char *)&s[1], (int)s[0]);
- }
- PyObject *
- PyMac_BuildOptStr255(Str255 s)
- {
- if ( s == NULL ) {
- Py_INCREF(Py_None);
- return Py_None;
- }
- return PyString_FromStringAndSize((char *)&s[1], (int)s[0]);
- }
- /* Convert a Python object to a Rect.
- The object must be a (left, top, right, bottom) tuple.
- (This differs from the order in the struct but is consistent with
- the arguments to SetRect(), and also with STDWIN). */
- int
- PyMac_GetRect(PyObject *v, Rect *r)
- {
- return PyArg_Parse(v, "(hhhh)", &r->left, &r->top, &r->right, &r->bottom);
- }
- /* Convert a Rect to a Python object */
- PyObject *
- PyMac_BuildRect(Rect *r)
- {
- return Py_BuildValue("(hhhh)", r->left, r->top, r->right, r->bottom);
- }
- /* Convert a Python object to a Point.
- The object must be a (h, v) tuple.
- (This differs from the order in the struct but is consistent with
- the arguments to SetPoint(), and also with STDWIN). */
- int
- PyMac_GetPoint(PyObject *v, Point *p)
- {
- return PyArg_Parse(v, "(hh)", &p->h, &p->v);
- }
- /* Convert a Point to a Python object */
- PyObject *
- PyMac_BuildPoint(Point p)
- {
- return Py_BuildValue("(hh)", p.h, p.v);
- }
- /* Convert a Python object to an EventRecord.
- The object must be a (what, message, when, (v, h), modifiers) tuple. */
- int
- PyMac_GetEventRecord(PyObject *v, EventRecord *e)
- {
- return PyArg_Parse(v, "(Hkk(hh)H)",
- &e->what,
- &e->message,
- &e->when,
- &e->where.h,
- &e->where.v,
- &e->modifiers);
- }
- /* Convert a Rect to an EventRecord object */
- PyObject *
- PyMac_BuildEventRecord(EventRecord *e)
- {
- return Py_BuildValue("(hll(hh)h)",
- e->what,
- e->message,
- e->when,
- e->where.h,
- e->where.v,
- e->modifiers);
- }
- /* Convert Python object to Fixed */
- int
- PyMac_GetFixed(PyObject *v, Fixed *f)
- {
- double d;
-
- if( !PyArg_Parse(v, "d", &d))
- return 0;
- *f = (Fixed)(d * 0x10000);
- return 1;
- }
- /* Convert a Fixed to a Python object */
- PyObject *
- PyMac_BuildFixed(Fixed f)
- {
- double d;
-
- d = f;
- d = d / 0x10000;
- return Py_BuildValue("d", d);
- }
- /* Convert wide to/from Python int or (hi, lo) tuple. XXXX Should use Python longs */
- int
- PyMac_Getwide(PyObject *v, wide *rv)
- {
- if (PyInt_Check(v)) {
- rv->hi = 0;
- rv->lo = PyInt_AsLong(v);
- if( rv->lo & 0x80000000 )
- rv->hi = -1;
- return 1;
- }
- return PyArg_Parse(v, "(kk)", &rv->hi, &rv->lo);
- }
- PyObject *
- PyMac_Buildwide(wide *w)
- {
- if ( (w->hi == 0 && (w->lo & 0x80000000) == 0) ||
- (w->hi == -1 && (w->lo & 0x80000000) ) )
- return PyInt_FromLong(w->lo);
- return Py_BuildValue("(ll)", w->hi, w->lo);
- }
- #ifdef USE_TOOLBOX_OBJECT_GLUE
- /*
- ** Glue together the toolbox objects.
- **
- ** Because toolbox modules interdepend on each other, they use each others
- ** object types, on MacOSX/MachO this leads to the situation that they
- ** cannot be dynamically loaded (or they would all have to be lumped into
- ** a single .so, but this would be bad for extensibility).
- **
- ** This file defines wrappers for all the _New and _Convert functions,
- ** which are the Py_BuildValue and PyArg_ParseTuple helpers. The wrappers
- ** check an indirection function pointer, and if it isn't filled in yet
- ** they import the appropriate module, whose init routine should fill in
- ** the pointer.
- */
- #define GLUE_NEW(object, routinename, module) \
- PyObject *(*PyMacGluePtr_##routinename)(object); \
- \
- PyObject *routinename(object cobj) { \
- if (!PyMacGluePtr_##routinename) { \
- if (!PyImport_ImportModule(module)) return NULL; \
- if (!PyMacGluePtr_##routinename) { \
- PyErr_SetString(PyExc_ImportError, "Module did not provide routine: " module ": " #routinename); \
- return NULL; \
- } \
- } \
- return (*PyMacGluePtr_##routinename)(cobj); \
- }
- #define GLUE_CONVERT(object, routinename, module) \
- int (*PyMacGluePtr_##routinename)(PyObject *, object *); \
- \
- int routinename(PyObject *pyobj, object *cobj) { \
- if (!PyMacGluePtr_##routinename) { \
- if (!PyImport_ImportModule(module)) return 0; \
- if (!PyMacGluePtr_##routinename) { \
- PyErr_SetString(PyExc_ImportError, "Module did not provide routine: " module ": " #routinename); \
- return 0; \
- } \
- } \
- return (*PyMacGluePtr_##routinename)(pyobj, cobj); \
- }
- GLUE_NEW(FSSpec *, PyMac_BuildFSSpec, "Carbon.File")
- GLUE_CONVERT(FSSpec, PyMac_GetFSSpec, "Carbon.File")
- GLUE_NEW(FSRef *, PyMac_BuildFSRef, "Carbon.File")
- GLUE_CONVERT(FSRef, PyMac_GetFSRef, "Carbon.File")
- GLUE_NEW(AppleEvent *, AEDesc_New, "Carbon.AE") /* XXXX Why by address? */
- GLUE_NEW(AppleEvent *, AEDesc_NewBorrowed, "Carbon.AE")
- GLUE_CONVERT(AppleEvent, AEDesc_Convert, "Carbon.AE")
- GLUE_NEW(Component, CmpObj_New, "Carbon.Cm")
- GLUE_CONVERT(Component, CmpObj_Convert, "Carbon.Cm")
- GLUE_NEW(ComponentInstance, CmpInstObj_New, "Carbon.Cm")
- GLUE_CONVERT(ComponentInstance, CmpInstObj_Convert, "Carbon.Cm")
- GLUE_NEW(ControlHandle, CtlObj_New, "Carbon.Ctl")
- GLUE_CONVERT(ControlHandle, CtlObj_Convert, "Carbon.Ctl")
- GLUE_NEW(DialogPtr, DlgObj_New, "Carbon.Dlg")
- GLUE_CONVERT(DialogPtr, DlgObj_Convert, "Carbon.Dlg")
- GLUE_NEW(DialogPtr, DlgObj_WhichDialog, "Carbon.Dlg")
- GLUE_NEW(DragReference, DragObj_New, "Carbon.Drag")
- GLUE_CONVERT(DragReference, DragObj_Convert, "Carbon.Drag")
- GLUE_NEW(ListHandle, ListObj_New, "Carbon.List")
- GLUE_CONVERT(ListHandle, ListObj_Convert, "Carbon.List")
- GLUE_NEW(MenuHandle, MenuObj_New, "Carbon.Menu")
- GLUE_CONVERT(MenuHandle, MenuObj_Convert, "Carbon.Menu")
- GLUE_NEW(GrafPtr, GrafObj_New, "Carbon.Qd")
- GLUE_CONVERT(GrafPtr, GrafObj_Convert, "Carbon.Qd")
- GLUE_NEW(BitMapPtr, BMObj_New, "Carbon.Qd")
- GLUE_CONVERT(BitMapPtr, BMObj_Convert, "Carbon.Qd")
- GLUE_NEW(RGBColor *, QdRGB_New, "Carbon.Qd") /* XXXX Why? */
- GLUE_CONVERT(RGBColor, QdRGB_Convert, "Carbon.Qd")
- GLUE_NEW(GWorldPtr, GWorldObj_New, "Carbon.Qdoffs")
- GLUE_CONVERT(GWorldPtr, GWorldObj_Convert, "Carbon.Qdoffs")
- #ifndef __LP64__
- GLUE_NEW(Track, TrackObj_New, "Carbon.Qt")
- GLUE_CONVERT(Track, TrackObj_Convert, "Carbon.Qt")
- GLUE_NEW(Movie, MovieObj_New, "Carbon.Qt")
- GLUE_CONVERT(Movie, MovieObj_Convert, "Carbon.Qt")
- GLUE_NEW(MovieController, MovieCtlObj_New, "Carbon.Qt")
- GLUE_CONVERT(MovieController, MovieCtlObj_Convert, "Carbon.Qt")
- GLUE_NEW(TimeBase, TimeBaseObj_New, "Carbon.Qt")
- GLUE_CONVERT(TimeBase, TimeBaseObj_Convert, "Carbon.Qt")
- GLUE_NEW(UserData, UserDataObj_New, "Carbon.Qt")
- GLUE_CONVERT(UserData, UserDataObj_Convert, "Carbon.Qt")
- GLUE_NEW(Media, MediaObj_New, "Carbon.Qt")
- GLUE_CONVERT(Media, MediaObj_Convert, "Carbon.Qt")
- #endif /* !__LP64__ */
- GLUE_NEW(Handle, ResObj_New, "Carbon.Res")
- GLUE_CONVERT(Handle, ResObj_Convert, "Carbon.Res")
- GLUE_NEW(Handle, OptResObj_New, "Carbon.Res")
- GLUE_CONVERT(Handle, OptResObj_Convert, "Carbon.Res")
- GLUE_NEW(TEHandle, TEObj_New, "Carbon.TE")
- GLUE_CONVERT(TEHandle, TEObj_Convert, "Carbon.TE")
- GLUE_NEW(WindowPtr, WinObj_New, "Carbon.Win")
- GLUE_CONVERT(WindowPtr, WinObj_Convert, "Carbon.Win")
- GLUE_NEW(WindowPtr, WinObj_WhichWindow, "Carbon.Win")
- GLUE_CONVERT(CFTypeRef, CFObj_Convert, "Carbon.CF")
- GLUE_NEW(CFTypeRef, CFObj_New, "Carbon.CF")
- GLUE_CONVERT(CFTypeRef, CFTypeRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFTypeRef, CFTypeRefObj_New, "Carbon.CF")
- GLUE_CONVERT(CFStringRef, CFStringRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFStringRef, CFStringRefObj_New, "Carbon.CF")
- GLUE_CONVERT(CFMutableStringRef, CFMutableStringRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFMutableStringRef, CFMutableStringRefObj_New, "Carbon.CF")
- GLUE_CONVERT(CFArrayRef, CFArrayRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFArrayRef, CFArrayRefObj_New, "Carbon.CF")
- GLUE_CONVERT(CFMutableArrayRef, CFMutableArrayRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFMutableArrayRef, CFMutableArrayRefObj_New, "Carbon.CF")
- GLUE_CONVERT(CFDictionaryRef, CFDictionaryRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFDictionaryRef, CFDictionaryRefObj_New, "Carbon.CF")
- GLUE_CONVERT(CFMutableDictionaryRef, CFMutableDictionaryRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFMutableDictionaryRef, CFMutableDictionaryRefObj_New, "Carbon.CF")
- GLUE_CONVERT(CFURLRef, CFURLRefObj_Convert, "Carbon.CF")
- GLUE_CONVERT(CFURLRef, OptionalCFURLRefObj_Convert, "Carbon.CF")
- GLUE_NEW(CFURLRef, CFURLRefObj_New, "Carbon.CF")
- #endif /* USE_TOOLBOX_OBJECT_GLUE */