Initial revision

1 files changed, 246 insertions, 0 deletions

diff --git a/Modules/main.c b/Modules/main.c
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+++ b/Modules/main.c
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+/***********************************************************
+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"
+
+
+/* Interface to getopt(): */
+extern int optind;
+extern char *optarg;
+extern int getopt(); /* PROTO((int, char **, char *)); -- not standardized */
+
+
+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 *getversion();
+extern char *getcopyright();
+
+
+/* For getprogramname(); set by main() */
+static char *argv0;
+
+/* For getargcargv(); set by main() */
+static char **orig_argv;
+static int  orig_argc;
+
+
+/* Short usage message (with %s for argv0) */
+static char *usage_line =
+"usage: %s [-d] [-i] [-s] [-u ] [-v] [-c cmd | file | -] [arg] ...\n";
+
+/* Long usage message, split into parts < 512 bytes */
+static char *usage_top = "\n\
+Options and arguments (and corresponding environment variables):\n\
+-d     : debug output from parser (also PYTHONDEBUG=x)\n\
+-i     : inspect interactively after running script (also PYTHONINSPECT=x)\n\
+-s     : suppress printing of top level expressions (also PYTHONSUPPRESS=x)\n\
+-u     : unbuffered stdout and stderr (also PYTHONUNBUFFERED=x)\n\
+-v     : verbose (trace import statements) (also PYTHONVERBOSE=x)\n\
+-c cmd : program passed in as string (terminates option list)\n\
+";
+static char *usage_bot = "\
+file   : program read from script file\n\
+-      : program read from stdin (default; interactive mode if a tty)\n\
+arg ...: arguments passed to program in sys.argv[1:]\n\
+\n\
+Other environment variables:\n\
+PYTHONSTARTUP: file executed on interactive startup (no default)\n\
+PYTHONPATH   : colon-separated list of directories prefixed to the\n\
+               default module search path.  The result is sys.path.\n\
+";
+
+
+/* Main program */
+
+int
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int c;
+	int sts;
+	char *command = NULL;
+	char *filename = NULL;
+	FILE *fp = stdin;
+	char *p;
+	int inspect = 0;
+	int unbuffered = 0;
+
+	orig_argc = argc;	/* For getargcargv() */
+	orig_argv = argv;
+	argv0 = argv[0];	/* For getprogramname() */
+
+	if ((p = getenv("PYTHONDEBUG")) && *p != '\0')
+		Py_DebugFlag = 1;
+	if ((p = getenv("PYTHONSUPPRESS")) && *p != '\0')
+		Py_SuppressPrintingFlag = 1;
+	if ((p = getenv("PYTHONVERBOSE")) && *p != '\0')
+		Py_VerboseFlag = 1;
+	if ((p = getenv("PYTHONINSPECT")) && *p != '\0')
+		inspect = 1;
+	if ((p = getenv("PYTHONUNBUFFERED")) && *p != '\0')
+		unbuffered = 1;
+
+	while ((c = getopt(argc, argv, "c:disuv")) != EOF) {
+		if (c == 'c') {
+			/* -c is the last option; following arguments
+			   that look like options are left for the
+			   the command to interpret. */
+			command = malloc(strlen(optarg) + 2);
+			if (command == NULL)
+				Py_FatalError(
+				   "not enough memory to copy -c argument");
+			strcpy(command, optarg);
+			strcat(command, "\n");
+			break;
+		}
+		
+		switch (c) {
+
+		case 'd':
+			Py_DebugFlag++;
+			break;
+
+		case 'i':
+			inspect++;
+			break;
+
+		case 's':
+			Py_SuppressPrintingFlag++;
+			break;
+
+		case 'u':
+			unbuffered++;
+			break;
+
+		case 'v':
+			Py_VerboseFlag++;
+			break;
+
+		/* This space reserved for other options */
+
+		default:
+			fprintf(stderr, usage_line, argv[0]);
+			fprintf(stderr, usage_top);
+			fprintf(stderr, usage_bot);
+			exit(2);
+			/*NOTREACHED*/
+
+		}
+	}
+
+	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
+	}
+
+	if (command == NULL && optind < argc &&
+	    strcmp(argv[optind], "-") != 0)
+		filename = argv[optind];
+
+	if (Py_VerboseFlag ||
+	    command == NULL && filename == NULL && isatty((int)fileno(fp)))
+		fprintf(stderr, "Python %s\n%s\n",
+			getversion(), getcopyright());
+	
+	if (filename != NULL) {
+		if ((fp = fopen(filename, "r")) == NULL) {
+			fprintf(stderr, "%s: can't open file '%s'\n",
+				argv[0], filename);
+			exit(2);
+		}
+	}
+	
+	Py_Initialize();
+	
+	if (command != NULL) {
+		/* Backup optind and force sys.argv[0] = '-c' */
+		optind--;
+		argv[optind] = "-c";
+	}
+
+	PySys_SetArgv(argc-optind, argv+optind);
+
+	if (command) {
+		sts = PyRun_SimpleString(command) != 0;
+	}
+	else {
+		if (filename == NULL && isatty((int)fileno(fp))) {
+			char *startup = getenv("PYTHONSTARTUP");
+			if (startup != NULL && startup[0] != '\0') {
+				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*/
+}
+
+
+/* Return the program name -- some code out there needs this. */
+
+char *
+getprogramname()
+{
+	return argv0;
+}
+
+
+/* Make the *original* argc/argv available to other modules.
+   This is rare, but it is needed by the secureware extension. */
+
+void
+getargcargv(argc,argv)
+	int *argc;
+	char ***argv;
+{
+	*argc = orig_argc;
+	*argv = orig_argv;
+}