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- /***********************************************************
- Copyright 1991, 1992, 1993, 1994 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 "allobjects.h"
-
- extern int debugging; /* Needed in parser.c, declared in pythonrun.c */
- extern int verbose; /* Needed in import.c, declared in pythonrun.c */
- extern int suppress_print; /* Needed in ceval.c, declared in pythonrun.c */
-
- /* Interface to getopt(): */
- extern int optind;
- extern char *optarg;
- extern int getopt(); /* PROTO((int, char **, char *)); -- not standardized */
-
- extern char *getenv();
-
- extern char *getversion();
- extern char *getcopyright();
-
- int
- realmain(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;
-
- if ((p = getenv("PYTHONDEBUG")) && *p != '\0')
- debugging = 1;
- if ((p = getenv("PYTHONSUPPRESS")) && *p != '\0')
- suppress_print = 1;
- if ((p = getenv("PYTHONVERBOSE")) && *p != '\0')
- verbose = 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)
- fatal("not enough memory to copy -c argument");
- strcpy(command, optarg);
- strcat(command, "\n");
- break;
- }
-
- switch (c) {
-
- case 'd':
- debugging++;
- break;
-
- case 'i':
- inspect++;
- break;
-
- case 's':
- suppress_print++;
- break;
-
- case 'u':
- unbuffered++;
- break;
-
- case 'v':
- verbose++;
- break;
-
- /* This space reserved for other options */
-
- default:
- fprintf(stderr,
- "usage: %s [-d] [-i] [-s] [-u ] [-v] [-c cmd | file | -] [arg] ...\n",
- argv[0]);
- fprintf(stderr, "\
- \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 the 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\
- ");
- /* ANSI does not allow strings > 512 chars
- and MPW doesn't like it either -- so split it! */
- fprintf(stderr, "\
- 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\
- ");
- 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 (verbose ||
- 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);
- }
- }
-
- initall();
-
- if (command != NULL) {
- /* Backup optind and force sys.argv[0] = '-c' */
- optind--;
- argv[optind] = "-c";
- }
-
- setpythonargv(argc-optind, argv+optind);
-
- if (command) {
- sts = run_command(command) != 0;
- }
- else {
- if (filename == NULL && isatty((int)fileno(fp))) {
- char *startup = getenv("PYTHONSTARTUP");
- #ifdef macintosh
- if (startup == NULL)
- startup = "PythonStartup";
- #endif
- if (startup != NULL && startup[0] != '\0') {
- FILE *fp = fopen(startup, "r");
- if (fp != NULL) {
- (void) run_script(fp, startup);
- err_clear();
- fclose(fp);
- }
- }
- }
- sts = run(fp, filename == NULL ? "<stdin>" : filename) != 0;
- if (filename != NULL)
- fclose(fp);
- }
-
- if (inspect && isatty((int)fileno(stdin)) &&
- (filename != NULL || command != NULL))
- sts = run(stdin, "<stdin>") != 0;
-
- goaway(sts);
- /*NOTREACHED*/
- }
-