Mac/Python/macmain.c

/***********************************************************
Copyright 1991-1995 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.

******************************************************************/

/* Python interpreter main program */

#include "Python.h"
#include "pythonresources.h"
#include "import.h"
#include "marshal.h"

#include <Memory.h>
#include <Resources.h>
#include <stdio.h>
#include <Events.h>
#include <Windows.h>
#include <Desk.h>
#include <Fonts.h>

#ifdef __MWERKS__
#include <SIOUX.h>
#define USE_SIOUX
#endif

#ifdef THINK_C
#include <console.h>
#endif

#define STARTUP "PythonStartup"

extern int Py_DebugFlag; /* For parser.c, declared in pythonrun.c */
extern int Py_VerboseFlag; /* For import.c, declared in pythonrun.c */
extern int Py_SuppressPrintingFlag; /* For ceval.c, declared in pythonrun.c */


/* Subroutines that live in their own file */
extern char *Py_GetVersion Py_PROTO((void));
extern char *Py_GetCopyright Py_PROTO((void));


/* For Py_GetProgramName(); set by main() */
static char *argv0;

/* For Py_GetArgcArgv(); set by main() */
static char **orig_argv;
static int  orig_argc;

/* Flags indicating whether stdio window should stay open on termination */
static int keep_normal;
static int keep_error = 1;

static void Py_Main Py_PROTO((int, char **)); /* Forward */
void PyMac_Exit Py_PROTO((int)); /* Forward */

/* Initialize the Mac toolbox world */

static void
init_mac_world()
{
#ifdef THINK_C
	printf("\n");
#else
	MaxApplZone();
	InitGraf(&qd.thePort);
	InitFonts();
	InitWindows();
	TEInit();
	InitDialogs((long)0);
	InitMenus();
	InitCursor();
#endif
}

/* Initialization code shared by interpreter and applets */

static void
init_common()
{

	/* Initialize toolboxes */
	init_mac_world();
	
#ifdef USE_MAC_SHARED_LIBRARY
	/* Add the shared library to the stack of resource files */
	PyMac_AddLibResources();
#endif

#if defined(USE_GUSI)
	/* Setup GUSI */
	GUSIDefaultSetup();
#endif

#ifdef USE_SIOUX
	/* Set various SIOUX flags. Some are changed later based on options */
	SIOUXSettings.asktosaveonclose = 0;
	SIOUXSettings.showstatusline = 0;
	SIOUXSettings.tabspaces = 4;
#endif

}


#ifdef USE_MAC_APPLET_SUPPORT
/* Applet support */

/* Run a compiled Python Python script from 'PYC ' resource __main__ */
static int
run_main_resource()
{
	Handle h;
	long size;
	PyObject *code;
	PyObject *result;
	
	h = GetNamedResource('PYC ', "\p__main__");
	if (h == NULL) {
		Alert(NOPYC_ALERT, NULL);
		return 1;
	}
	size = GetResourceSizeOnDisk(h);
	HLock(h);
	code = PyMarshal_ReadObjectFromString(*h + 8, (int)(size - 8));
	HUnlock(h);
	ReleaseResource(h);
	if (code == NULL) {
		PyErr_Print();
		return 1;
	}
	result = PyImport_ExecCodeModule("__main__", code);
	Py_DECREF(code);
	if (result == NULL) {
		PyErr_Print();
		return 1;
	}
	Py_DECREF(result);
	return 0;
}

/* Initialization sequence for applets */
void
PyMac_InitApplet()
{
	int argc;
	char **argv;
	int err;

	init_common();
	argc = PyMac_GetArgv(&argv);
	Py_Initialize();
	PySys_SetArgv(argc, argv);
	err = run_main_resource();
	fflush(stderr);
	fflush(stdout);
	PyMac_Exit(err);
	/* XXX Should we bother to Py_Exit(sts)? */
}

#endif /* USE_MAC_APPLET_SUPPORT */

/* For normal application */
void
PyMac_InitApplication()
{
	int argc;
	char **argv;
	
	init_common();
	argc = PyMac_GetArgv(&argv);
	if ( argc > 1 ) {
		/* We're running a script. Attempt to change current directory */
		char curwd[256], *endp;
		
		strcpy(curwd, argv[1]);
		endp = strrchr(curwd, ':');
		if ( endp && endp > curwd ) {
			*endp = '\0';

			chdir(curwd);
#ifdef USE_GUSI
			/* Change MacOS's idea of wd too */
			PyMac_FixGUSIcd();
#endif
		}
	}
	Py_Main(argc, argv);
}

/*
** PyMac_InteractiveOptions - Allow user to set options if option key is pressed
*/
void
PyMac_InteractiveOptions(int *inspect, int *verbose, int *suppress_print, 
						 int *unbuffered, int *debugging, int *keep_normal,
						 int *keep_error, int *argcp, char ***argvp)
{
	KeyMap rmap;
	unsigned char *map;
	short item, type;
	ControlHandle handle;
	DialogPtr dialog;
	Rect rect;
	int old_argc = *argcp;
	int i;
	
	/* Default-defaults: */
	*keep_error = 1;
	/* Get default settings from our preference file */
	PyMac_PreferenceOptions(inspect, verbose, suppress_print,
			unbuffered, debugging, keep_normal, keep_error);
	/* If option is pressed override these */
	GetKeys(rmap);
	map = (unsigned char *)rmap;
	if ( ( map[0x3a>>3] & (1<<(0x3a&7)) ) == 0 )	/* option key is 3a */
		return;

	dialog = GetNewDialog(OPT_DIALOG, NULL, (WindowPtr)-1);
	if ( dialog == NULL ) {
		printf("Option dialog not found - cannot set options\n");
		return;
	}
	SetDialogDefaultItem(dialog, OPT_OK);
	SetDialogCancelItem(dialog, OPT_CANCEL);
	
	/* Set default values */
#define SET_OPT_ITEM(num, var) \
		GetDialogItem(dialog, (num), &type, (Handle *)&handle, &rect); \
		SetCtlValue(handle, (short)*(var));

	SET_OPT_ITEM(OPT_INSPECT, inspect);
	SET_OPT_ITEM(OPT_VERBOSE, verbose);
	SET_OPT_ITEM(OPT_SUPPRESS, suppress_print);
	SET_OPT_ITEM(OPT_UNBUFFERED, unbuffered);
	SET_OPT_ITEM(OPT_DEBUGGING, debugging);
	SET_OPT_ITEM(OPT_KEEPNORMAL, keep_normal);
	SET_OPT_ITEM(OPT_KEEPERROR, keep_error);

#undef SET_OPT_ITEM
	
	while (1) {
		handle = NULL;
		ModalDialog(NULL, &item);
		if ( item == OPT_OK )
			break;
		if ( item == OPT_CANCEL ) {
			DisposDialog(dialog);
			exit(0);
		}
		if ( item == OPT_CMDLINE ) {
			int new_argc, newer_argc;
			char **new_argv, **newer_argv;
			
			new_argc = ccommand(&new_argv);
			newer_argc = (new_argc-1) + old_argc;
			newer_argv = malloc((newer_argc+1)*sizeof(char *));
			if( !newer_argv )
				Py_FatalError("Cannot malloc argv\n");
			for(i=0; i<old_argc; i++)
				newer_argv[i] = (*argvp)[i];
			for(i=old_argc; i<=newer_argc; i++) /* Copy the NULL too */
				newer_argv[i] = new_argv[i-old_argc+1];
			*argvp = newer_argv;
			*argcp = newer_argc;
			
			/* XXXX Is it not safe to use free() here, apparently */
		}
#define OPT_ITEM(num, var) \
		if ( item == (num) ) { \
			*(var) = !*(var); \
			GetDialogItem(dialog, (num), &type, (Handle *)&handle, &rect); \
			SetCtlValue(handle, (short)*(var)); \
		}
		
		OPT_ITEM(OPT_INSPECT, inspect);
		OPT_ITEM(OPT_VERBOSE, verbose);
		OPT_ITEM(OPT_SUPPRESS, suppress_print);
		OPT_ITEM(OPT_UNBUFFERED, unbuffered);
		OPT_ITEM(OPT_DEBUGGING, debugging);
		OPT_ITEM(OPT_KEEPNORMAL, keep_normal);
		OPT_ITEM(OPT_KEEPERROR, keep_error);
		
#undef OPT_ITEM
	}
	DisposDialog(dialog);
}
/* Main program */

static void
Py_Main(argc, argv)
	int argc;
	char **argv;
{
	int sts;
	char *command = NULL;
	char *filename = NULL;
	FILE *fp = stdin;
	int inspect = 0;
	int unbuffered = 0;

	PyMac_InteractiveOptions(&inspect, &Py_VerboseFlag, &Py_SuppressPrintingFlag,
			&unbuffered, &Py_DebugFlag, &keep_normal, &keep_error, &argc, &argv);

	orig_argc = argc;	/* For Py_GetArgcArgv() */
	orig_argv = argv;
	argv0 = argv[0];	/* For Py_GetProgramName() */

	if (unbuffered) {
#ifndef MPW
		setbuf(stdout, (char *)NULL);
		setbuf(stderr, (char *)NULL);
#else
		/* On MPW (3.2) unbuffered seems to hang */
		setvbuf(stdout, (char *)NULL, _IOLBF, BUFSIZ);
		setvbuf(stderr, (char *)NULL, _IOLBF, BUFSIZ);
#endif
	}

	filename = argv[1];

	if (Py_VerboseFlag ||
	    command == NULL && filename == NULL && isatty((int)fileno(fp)))
		fprintf(stderr, "Python %s\n%s\n",
			Py_GetVersion(), Py_GetCopyright());
	
	if (filename != NULL) {
		if ((fp = fopen(filename, "r")) == NULL) {
			fprintf(stderr, "%s: can't open file '%s'\n",
				argv[0], filename);
			PyMac_Exit(2);
		}
	}
	
	Py_Initialize();
	
	PySys_SetArgv(argc-1, argv+1);

	if (filename == NULL && isatty((int)fileno(fp))) {
		FILE *fp = fopen(STARTUP, "r");
		if (fp != NULL) {
			(void) PyRun_SimpleFile(fp, STARTUP);
			PyErr_Clear();
			fclose(fp);
		}
	}
	sts = PyRun_AnyFile(
			fp, filename == NULL ? "<stdin>" : filename) != 0;
	if (filename != NULL)
		fclose(fp);

	if (inspect && isatty((int)fileno(stdin)) &&
	    (filename != NULL || command != NULL))
		sts = PyRun_AnyFile(stdin, "<stdin>") != 0;

	Py_Exit(sts);
	/*NOTREACHED*/
}

/*
** Terminate application
*/
void
PyMac_Exit(status)
	int status;
{
	int keep;
	
	if ( status )
		keep = keep_error;
	else
		keep = keep_normal;
		
#ifdef USE_SIOUX
	if (keep) {
		SIOUXSettings.standalone = 1;
		SIOUXSettings.autocloseonquit = 0;
		SIOUXSetTitle("\p\307terminated\310");
	}
	else
		SIOUXSettings.autocloseonquit = 1;
#endif
#ifdef THINK_C
	console_options.pause_atexit = keep;
#endif

	exit(status);
}

/* Return the program name -- some code out there needs this. */

char *
Py_GetProgramName()
{
	return argv0;
}


/* Make the *original* argc/argv available to other modules.
   This is rare, but it is needed by the secureware extension. */

void
Py_GetArgcArgv(argc,argv)
	int *argc;
	char ***argv;
{
	*argc = orig_argc;
	*argv = orig_argv;
}

/* More cruft that shouldn't really be here, used in sysmodule.c */

char *
Py_GetPrefix()
{
	return "";
}

char *
Py_GetExecPrefix()
{
	return "";
}