| /* Python interpreter main program */ | |
| #include "Python.h" | |
| #include "osdefs.h" | |
| #include "code.h" /* For CO_FUTURE_DIVISION */ | |
| #include "import.h" | |
| #ifdef __VMS | |
| #include <unixlib.h> | |
| #endif | |
| #if defined(MS_WINDOWS) || defined(__CYGWIN__) | |
| #ifdef HAVE_FCNTL_H | |
| #include <fcntl.h> | |
| #endif | |
| #endif | |
| #if (defined(PYOS_OS2) && !defined(PYCC_GCC)) || defined(MS_WINDOWS) | |
| #define PYTHONHOMEHELP "<prefix>\\lib" | |
| #else | |
| #if defined(PYOS_OS2) && defined(PYCC_GCC) | |
| #define PYTHONHOMEHELP "<prefix>/Lib" | |
| #else | |
| #define PYTHONHOMEHELP "<prefix>/pythonX.X" | |
| #endif | |
| #endif | |
| #include "pygetopt.h" | |
| #define COPYRIGHT \ | |
| "Type \"help\", \"copyright\", \"credits\" or \"license\" " \ | |
| "for more information." | |
| #ifdef __cplusplus | |
| extern "C" { | |
| #endif | |
| /* For Py_GetArgcArgv(); set by main() */ | |
| static char **orig_argv; | |
| static int orig_argc; | |
| /* command line options */ | |
| #define BASE_OPTS "3bBc:dEhiJm:OQ:sStuUvVW:xX?" | |
| #ifndef RISCOS | |
| #define PROGRAM_OPTS BASE_OPTS | |
| #else /*RISCOS*/ | |
| /* extra option saying that we are running under a special task window | |
| frontend; especially my_readline will behave different */ | |
| #define PROGRAM_OPTS BASE_OPTS "w" | |
| /* corresponding flag */ | |
| extern int Py_RISCOSWimpFlag; | |
| #endif /*RISCOS*/ | |
| /* Short usage message (with %s for argv0) */ | |
| static char *usage_line = | |
| "usage: %s [option] ... [-c cmd | -m mod | file | -] [arg] ...\n"; | |
| /* Long usage message, split into parts < 512 bytes */ | |
| static char *usage_1 = "\ | |
| Options and arguments (and corresponding environment variables):\n\ | |
| -B : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x\n\ | |
| -c cmd : program passed in as string (terminates option list)\n\ | |
| -d : debug output from parser; also PYTHONDEBUG=x\n\ | |
| -E : ignore PYTHON* environment variables (such as PYTHONPATH)\n\ | |
| -h : print this help message and exit (also --help)\n\ | |
| -i : inspect interactively after running script; forces a prompt even\n\ | |
| "; | |
| static char *usage_2 = "\ | |
| if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\ | |
| -m mod : run library module as a script (terminates option list)\n\ | |
| -O : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x\n\ | |
| -OO : remove doc-strings in addition to the -O optimizations\n\ | |
| -Q arg : division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew\n\ | |
| -s : don't add user site directory to sys.path; also PYTHONNOUSERSITE\n\ | |
| -S : don't imply 'import site' on initialization\n\ | |
| -t : issue warnings about inconsistent tab usage (-tt: issue errors)\n\ | |
| "; | |
| static char *usage_3 = "\ | |
| -u : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x\n\ | |
| see man page for details on internal buffering relating to '-u'\n\ | |
| -v : verbose (trace import statements); also PYTHONVERBOSE=x\n\ | |
| can be supplied multiple times to increase verbosity\n\ | |
| -V : print the Python version number and exit (also --version)\n\ | |
| -W arg : warning control; arg is action:message:category:module:lineno\n\ | |
| also PYTHONWARNINGS=arg\n\ | |
| -x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\ | |
| "; | |
| static char *usage_4 = "\ | |
| -3 : warn about Python 3.x incompatibilities that 2to3 cannot trivially fix\n\ | |
| 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 : '%c'-separated list of directories prefixed to the\n\ | |
| default module search path. The result is sys.path.\n\ | |
| "; | |
| static char *usage_5 = "\ | |
| PYTHONHOME : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n\ | |
| The default module search path uses %s.\n\ | |
| PYTHONCASEOK : ignore case in 'import' statements (Windows).\n\ | |
| PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n\ | |
| "; | |
| static int | |
| usage(int exitcode, char* program) | |
| { | |
| FILE *f = exitcode ? stderr : stdout; | |
| fprintf(f, usage_line, program); | |
| if (exitcode) | |
| fprintf(f, "Try `python -h' for more information.\n"); | |
| else { | |
| fputs(usage_1, f); | |
| fputs(usage_2, f); | |
| fputs(usage_3, f); | |
| fprintf(f, usage_4, DELIM); | |
| fprintf(f, usage_5, DELIM, PYTHONHOMEHELP); | |
| } | |
| #if defined(__VMS) | |
| if (exitcode == 0) { | |
| /* suppress 'error' message */ | |
| return 1; | |
| } | |
| else { | |
| /* STS$M_INHIB_MSG + SS$_ABORT */ | |
| return 0x1000002c; | |
| } | |
| #else | |
| return exitcode; | |
| #endif | |
| /*NOTREACHED*/ | |
| } | |
| static void RunStartupFile(PyCompilerFlags *cf) | |
| { | |
| char *startup = Py_GETENV("PYTHONSTARTUP"); | |
| if (startup != NULL && startup[0] != '\0') { | |
| FILE *fp = fopen(startup, "r"); | |
| if (fp != NULL) { | |
| (void) PyRun_SimpleFileExFlags(fp, startup, 0, cf); | |
| PyErr_Clear(); | |
| fclose(fp); | |
| } else { | |
| int save_errno; | |
| save_errno = errno; | |
| PySys_WriteStderr("Could not open PYTHONSTARTUP\n"); | |
| errno = save_errno; | |
| PyErr_SetFromErrnoWithFilename(PyExc_IOError, | |
| startup); | |
| PyErr_Print(); | |
| PyErr_Clear(); | |
| } | |
| } | |
| } | |
| static int RunModule(char *module, int set_argv0) | |
| { | |
| PyObject *runpy, *runmodule, *runargs, *result; | |
| runpy = PyImport_ImportModule("runpy"); | |
| if (runpy == NULL) { | |
| fprintf(stderr, "Could not import runpy module\n"); | |
| return -1; | |
| } | |
| runmodule = PyObject_GetAttrString(runpy, "_run_module_as_main"); | |
| if (runmodule == NULL) { | |
| fprintf(stderr, "Could not access runpy._run_module_as_main\n"); | |
| Py_DECREF(runpy); | |
| return -1; | |
| } | |
| runargs = Py_BuildValue("(si)", module, set_argv0); | |
| if (runargs == NULL) { | |
| fprintf(stderr, | |
| "Could not create arguments for runpy._run_module_as_main\n"); | |
| Py_DECREF(runpy); | |
| Py_DECREF(runmodule); | |
| return -1; | |
| } | |
| result = PyObject_Call(runmodule, runargs, NULL); | |
| if (result == NULL) { | |
| PyErr_Print(); | |
| } | |
| Py_DECREF(runpy); | |
| Py_DECREF(runmodule); | |
| Py_DECREF(runargs); | |
| if (result == NULL) { | |
| return -1; | |
| } | |
| Py_DECREF(result); | |
| return 0; | |
| } | |
| static int RunMainFromImporter(char *filename) | |
| { | |
| PyObject *argv0 = NULL, *importer = NULL; | |
| if ((argv0 = PyString_FromString(filename)) && | |
| (importer = PyImport_GetImporter(argv0)) && | |
| (importer->ob_type != &PyNullImporter_Type)) | |
| { | |
| /* argv0 is usable as an import source, so | |
| put it in sys.path[0] and import __main__ */ | |
| PyObject *sys_path = NULL; | |
| if ((sys_path = PySys_GetObject("path")) && | |
| !PyList_SetItem(sys_path, 0, argv0)) | |
| { | |
| Py_INCREF(argv0); | |
| Py_DECREF(importer); | |
| sys_path = NULL; | |
| return RunModule("__main__", 0) != 0; | |
| } | |
| } | |
| Py_XDECREF(argv0); | |
| Py_XDECREF(importer); | |
| if (PyErr_Occurred()) { | |
| PyErr_Print(); | |
| return 1; | |
| } | |
| return -1; | |
| } | |
| /* Main program */ | |
| int | |
| Py_Main(int argc, char **argv) | |
| { | |
| int c; | |
| int sts; | |
| char *command = NULL; | |
| char *filename = NULL; | |
| char *module = NULL; | |
| FILE *fp = stdin; | |
| char *p; | |
| int unbuffered = 0; | |
| int skipfirstline = 0; | |
| int stdin_is_interactive = 0; | |
| int help = 0; | |
| int version = 0; | |
| int saw_unbuffered_flag = 0; | |
| PyCompilerFlags cf; | |
| cf.cf_flags = 0; | |
| orig_argc = argc; /* For Py_GetArgcArgv() */ | |
| orig_argv = argv; | |
| #ifdef RISCOS | |
| Py_RISCOSWimpFlag = 0; | |
| #endif | |
| PySys_ResetWarnOptions(); | |
| while ((c = _PyOS_GetOpt(argc, argv, PROGRAM_OPTS)) != EOF) { | |
| if (c == 'c') { | |
| /* -c is the last option; following arguments | |
| that look like options are left for the | |
| command to interpret. */ | |
| command = (char *)malloc(strlen(_PyOS_optarg) + 2); | |
| if (command == NULL) | |
| Py_FatalError( | |
| "not enough memory to copy -c argument"); | |
| strcpy(command, _PyOS_optarg); | |
| strcat(command, "\n"); | |
| break; | |
| } | |
| if (c == 'm') { | |
| /* -m is the last option; following arguments | |
| that look like options are left for the | |
| module to interpret. */ | |
| module = (char *)malloc(strlen(_PyOS_optarg) + 2); | |
| if (module == NULL) | |
| Py_FatalError( | |
| "not enough memory to copy -m argument"); | |
| strcpy(module, _PyOS_optarg); | |
| break; | |
| } | |
| switch (c) { | |
| case 'b': | |
| Py_BytesWarningFlag++; | |
| break; | |
| case 'd': | |
| Py_DebugFlag++; | |
| break; | |
| case '3': | |
| Py_Py3kWarningFlag++; | |
| if (!Py_DivisionWarningFlag) | |
| Py_DivisionWarningFlag = 1; | |
| break; | |
| case 'Q': | |
| if (strcmp(_PyOS_optarg, "old") == 0) { | |
| Py_DivisionWarningFlag = 0; | |
| break; | |
| } | |
| if (strcmp(_PyOS_optarg, "warn") == 0) { | |
| Py_DivisionWarningFlag = 1; | |
| break; | |
| } | |
| if (strcmp(_PyOS_optarg, "warnall") == 0) { | |
| Py_DivisionWarningFlag = 2; | |
| break; | |
| } | |
| if (strcmp(_PyOS_optarg, "new") == 0) { | |
| /* This only affects __main__ */ | |
| cf.cf_flags |= CO_FUTURE_DIVISION; | |
| /* And this tells the eval loop to treat | |
| BINARY_DIVIDE as BINARY_TRUE_DIVIDE */ | |
| _Py_QnewFlag = 1; | |
| break; | |
| } | |
| fprintf(stderr, | |
| "-Q option should be `-Qold', " | |
| "`-Qwarn', `-Qwarnall', or `-Qnew' only\n"); | |
| return usage(2, argv[0]); | |
| /* NOTREACHED */ | |
| case 'i': | |
| Py_InspectFlag++; | |
| Py_InteractiveFlag++; | |
| break; | |
| /* case 'J': reserved for Jython */ | |
| case 'O': | |
| Py_OptimizeFlag++; | |
| break; | |
| case 'B': | |
| Py_DontWriteBytecodeFlag++; | |
| break; | |
| case 's': | |
| Py_NoUserSiteDirectory++; | |
| break; | |
| case 'S': | |
| Py_NoSiteFlag++; | |
| break; | |
| case 'E': | |
| Py_IgnoreEnvironmentFlag++; | |
| break; | |
| case 't': | |
| Py_TabcheckFlag++; | |
| break; | |
| case 'u': | |
| unbuffered++; | |
| saw_unbuffered_flag = 1; | |
| break; | |
| case 'v': | |
| Py_VerboseFlag++; | |
| break; | |
| #ifdef RISCOS | |
| case 'w': | |
| Py_RISCOSWimpFlag = 1; | |
| break; | |
| #endif | |
| case 'x': | |
| skipfirstline = 1; | |
| break; | |
| /* case 'X': reserved for implementation-specific arguments */ | |
| case 'U': | |
| Py_UnicodeFlag++; | |
| break; | |
| case 'h': | |
| case '?': | |
| help++; | |
| break; | |
| case 'V': | |
| version++; | |
| break; | |
| case 'W': | |
| PySys_AddWarnOption(_PyOS_optarg); | |
| break; | |
| /* This space reserved for other options */ | |
| default: | |
| return usage(2, argv[0]); | |
| /*NOTREACHED*/ | |
| } | |
| } | |
| if (help) | |
| return usage(0, argv[0]); | |
| if (version) { | |
| fprintf(stderr, "Python %s\n", PY_VERSION); | |
| return 0; | |
| } | |
| if (Py_Py3kWarningFlag && !Py_TabcheckFlag) | |
| /* -3 implies -t (but not -tt) */ | |
| Py_TabcheckFlag = 1; | |
| if (!Py_InspectFlag && | |
| (p = Py_GETENV("PYTHONINSPECT")) && *p != '\0') | |
| Py_InspectFlag = 1; | |
| if (!saw_unbuffered_flag && | |
| (p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0') | |
| unbuffered = 1; | |
| if (!Py_NoUserSiteDirectory && | |
| (p = Py_GETENV("PYTHONNOUSERSITE")) && *p != '\0') | |
| Py_NoUserSiteDirectory = 1; | |
| if ((p = Py_GETENV("PYTHONWARNINGS")) && *p != '\0') { | |
| char *buf, *warning; | |
| buf = (char *)malloc(strlen(p) + 1); | |
| if (buf == NULL) | |
| Py_FatalError( | |
| "not enough memory to copy PYTHONWARNINGS"); | |
| strcpy(buf, p); | |
| for (warning = strtok(buf, ","); | |
| warning != NULL; | |
| warning = strtok(NULL, ",")) | |
| PySys_AddWarnOption(warning); | |
| free(buf); | |
| } | |
| if (command == NULL && module == NULL && _PyOS_optind < argc && | |
| strcmp(argv[_PyOS_optind], "-") != 0) | |
| { | |
| #ifdef __VMS | |
| filename = decc$translate_vms(argv[_PyOS_optind]); | |
| if (filename == (char *)0 || filename == (char *)-1) | |
| filename = argv[_PyOS_optind]; | |
| #else | |
| filename = argv[_PyOS_optind]; | |
| #endif | |
| } | |
| stdin_is_interactive = Py_FdIsInteractive(stdin, (char *)0); | |
| if (unbuffered) { | |
| #if defined(MS_WINDOWS) || defined(__CYGWIN__) | |
| _setmode(fileno(stdin), O_BINARY); | |
| _setmode(fileno(stdout), O_BINARY); | |
| #endif | |
| #ifdef HAVE_SETVBUF | |
| setvbuf(stdin, (char *)NULL, _IONBF, BUFSIZ); | |
| setvbuf(stdout, (char *)NULL, _IONBF, BUFSIZ); | |
| setvbuf(stderr, (char *)NULL, _IONBF, BUFSIZ); | |
| #else /* !HAVE_SETVBUF */ | |
| setbuf(stdin, (char *)NULL); | |
| setbuf(stdout, (char *)NULL); | |
| setbuf(stderr, (char *)NULL); | |
| #endif /* !HAVE_SETVBUF */ | |
| } | |
| else if (Py_InteractiveFlag) { | |
| #ifdef MS_WINDOWS | |
| /* Doesn't have to have line-buffered -- use unbuffered */ | |
| /* Any set[v]buf(stdin, ...) screws up Tkinter :-( */ | |
| setvbuf(stdout, (char *)NULL, _IONBF, BUFSIZ); | |
| #else /* !MS_WINDOWS */ | |
| #ifdef HAVE_SETVBUF | |
| setvbuf(stdin, (char *)NULL, _IOLBF, BUFSIZ); | |
| setvbuf(stdout, (char *)NULL, _IOLBF, BUFSIZ); | |
| #endif /* HAVE_SETVBUF */ | |
| #endif /* !MS_WINDOWS */ | |
| /* Leave stderr alone - it should be unbuffered anyway. */ | |
| } | |
| #ifdef __VMS | |
| else { | |
| setvbuf (stdout, (char *)NULL, _IOLBF, BUFSIZ); | |
| } | |
| #endif /* __VMS */ | |
| #ifdef __APPLE__ | |
| /* On MacOS X, when the Python interpreter is embedded in an | |
| application bundle, it gets executed by a bootstrapping script | |
| that does os.execve() with an argv[0] that's different from the | |
| actual Python executable. This is needed to keep the Finder happy, | |
| or rather, to work around Apple's overly strict requirements of | |
| the process name. However, we still need a usable sys.executable, | |
| so the actual executable path is passed in an environment variable. | |
| See Lib/plat-mac/bundlebuiler.py for details about the bootstrap | |
| script. */ | |
| if ((p = Py_GETENV("PYTHONEXECUTABLE")) && *p != '\0') | |
| Py_SetProgramName(p); | |
| else | |
| Py_SetProgramName(argv[0]); | |
| #else | |
| Py_SetProgramName(argv[0]); | |
| #endif | |
| Py_Initialize(); | |
| if (Py_VerboseFlag || | |
| (command == NULL && filename == NULL && module == NULL && stdin_is_interactive)) { | |
| fprintf(stderr, "Python %s on %s\n", | |
| Py_GetVersion(), Py_GetPlatform()); | |
| if (!Py_NoSiteFlag) | |
| fprintf(stderr, "%s\n", COPYRIGHT); | |
| } | |
| if (command != NULL) { | |
| /* Backup _PyOS_optind and force sys.argv[0] = '-c' */ | |
| _PyOS_optind--; | |
| argv[_PyOS_optind] = "-c"; | |
| } | |
| if (module != NULL) { | |
| /* Backup _PyOS_optind and force sys.argv[0] = '-c' | |
| so that PySys_SetArgv correctly sets sys.path[0] to '' | |
| rather than looking for a file called "-m". See | |
| tracker issue #8202 for details. */ | |
| _PyOS_optind--; | |
| argv[_PyOS_optind] = "-c"; | |
| } | |
| PySys_SetArgv(argc-_PyOS_optind, argv+_PyOS_optind); | |
| if ((Py_InspectFlag || (command == NULL && filename == NULL && module == NULL)) && | |
| isatty(fileno(stdin))) { | |
| PyObject *v; | |
| v = PyImport_ImportModule("readline"); | |
| if (v == NULL) | |
| PyErr_Clear(); | |
| else | |
| Py_DECREF(v); | |
| } | |
| if (command) { | |
| sts = PyRun_SimpleStringFlags(command, &cf) != 0; | |
| free(command); | |
| } else if (module) { | |
| sts = RunModule(module, 1); | |
| free(module); | |
| } | |
| else { | |
| if (filename == NULL && stdin_is_interactive) { | |
| Py_InspectFlag = 0; /* do exit on SystemExit */ | |
| RunStartupFile(&cf); | |
| } | |
| /* XXX */ | |
| sts = -1; /* keep track of whether we've already run __main__ */ | |
| if (filename != NULL) { | |
| sts = RunMainFromImporter(filename); | |
| } | |
| if (sts==-1 && filename!=NULL) { | |
| if ((fp = fopen(filename, "r")) == NULL) { | |
| fprintf(stderr, "%s: can't open file '%s': [Errno %d] %s\n", | |
| argv[0], filename, errno, strerror(errno)); | |
| return 2; | |
| } | |
| else if (skipfirstline) { | |
| int ch; | |
| /* Push back first newline so line numbers | |
| remain the same */ | |
| while ((ch = getc(fp)) != EOF) { | |
| if (ch == '\n') { | |
| (void)ungetc(ch, fp); | |
| break; | |
| } | |
| } | |
| } | |
| { | |
| /* XXX: does this work on Win/Win64? (see posix_fstat) */ | |
| struct stat sb; | |
| if (fstat(fileno(fp), &sb) == 0 && | |
| S_ISDIR(sb.st_mode)) { | |
| fprintf(stderr, "%s: '%s' is a directory, cannot continue\n", argv[0], filename); | |
| fclose(fp); | |
| return 1; | |
| } | |
| } | |
| } | |
| if (sts==-1) { | |
| /* call pending calls like signal handlers (SIGINT) */ | |
| if (Py_MakePendingCalls() == -1) { | |
| PyErr_Print(); | |
| sts = 1; | |
| } else { | |
| sts = PyRun_AnyFileExFlags( | |
| fp, | |
| filename == NULL ? "<stdin>" : filename, | |
| filename != NULL, &cf) != 0; | |
| } | |
| } | |
| } | |
| /* Check this environment variable at the end, to give programs the | |
| * opportunity to set it from Python. | |
| */ | |
| if (!Py_InspectFlag && | |
| (p = Py_GETENV("PYTHONINSPECT")) && *p != '\0') | |
| { | |
| Py_InspectFlag = 1; | |
| } | |
| if (Py_InspectFlag && stdin_is_interactive && | |
| (filename != NULL || command != NULL || module != NULL)) { | |
| Py_InspectFlag = 0; | |
| /* XXX */ | |
| sts = PyRun_AnyFileFlags(stdin, "<stdin>", &cf) != 0; | |
| } | |
| Py_Finalize(); | |
| #ifdef RISCOS | |
| if (Py_RISCOSWimpFlag) | |
| fprintf(stderr, "\x0cq\x0c"); /* make frontend quit */ | |
| #endif | |
| #ifdef __INSURE__ | |
| /* Insure++ is a memory analysis tool that aids in discovering | |
| * memory leaks and other memory problems. On Python exit, the | |
| * interned string dictionary is flagged as being in use at exit | |
| * (which it is). Under normal circumstances, this is fine because | |
| * the memory will be automatically reclaimed by the system. Under | |
| * memory debugging, it's a huge source of useless noise, so we | |
| * trade off slower shutdown for less distraction in the memory | |
| * reports. -baw | |
| */ | |
| _Py_ReleaseInternedStrings(); | |
| #endif /* __INSURE__ */ | |
| return sts; | |
| } | |
| /* this is gonna seem *real weird*, but if you put some other code between | |
| Py_Main() and Py_GetArgcArgv() you will need to adjust the test in the | |
| while statement in Misc/gdbinit:ppystack */ | |
| /* Make the *original* argc/argv available to other modules. | |
| This is rare, but it is needed by the secureware extension. */ | |
| void | |
| Py_GetArgcArgv(int *argc, char ***argv) | |
| { | |
| *argc = orig_argc; | |
| *argv = orig_argv; | |
| } | |
| #ifdef __cplusplus | |
| } | |
| #endif | |