| /* Python interpreter main program */ |
| |
| #include "Python.h" |
| #include "osdefs.h" |
| #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 "c:dEhim:OStuvVW:xX?" |
| |
| #define PROGRAM_OPTS BASE_OPTS |
| |
| /* 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\ |
| -c cmd : program passed in as string (terminates option list)\n\ |
| -d : debug output from parser; also PYTHONDEBUG=x\n\ |
| -E : ignore 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\ |
| if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\ |
| "; |
| static char *usage_2 = "\ |
| -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\ |
| -S : don't imply 'import site' on initialization\n\ |
| -t : issue warnings about inconsistent tab usage (-tt: issue errors)\n\ |
| -u : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x\n\ |
| "; |
| static char *usage_3 = "\ |
| 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\ |
| -x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\ |
| file : program read from script file\n\ |
| - : program read from stdin (default; interactive mode if a tty)\n\ |
| "; |
| static char *usage_4 = "\ |
| 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\ |
| 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\ |
| "; |
| |
| |
| 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 { |
| fprintf(f, usage_1); |
| fprintf(f, usage_2); |
| fprintf(f, usage_3); |
| fprintf(f, usage_4, DELIM, 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); |
| } |
| } |
| } |
| |
| |
| static int RunModule(char *module) |
| { |
| 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"); |
| if (runmodule == NULL) { |
| fprintf(stderr, "Could not access runpy.run_module\n"); |
| Py_DECREF(runpy); |
| return -1; |
| } |
| runargs = Py_BuildValue("sOsO", module, |
| Py_None, "__main__", Py_True); |
| if (runargs == NULL) { |
| fprintf(stderr, |
| "Could not create arguments for runpy.run_module\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; |
| } |
| |
| /* Wait until threading._shutdown completes, provided |
| the threading module was imported in the first place. |
| The shutdown routine will wait until all non-daemon |
| "threading" threads have completed. */ |
| #include "abstract.h" |
| static void |
| WaitForThreadShutdown(void) |
| { |
| #ifdef WITH_THREAD |
| PyObject *result; |
| PyThreadState *tstate = PyThreadState_GET(); |
| PyObject *threading = PyMapping_GetItemString(tstate->interp->modules, |
| "threading"); |
| if (threading == NULL) { |
| /* threading not imported */ |
| PyErr_Clear(); |
| return; |
| } |
| result = PyObject_CallMethod(threading, "_shutdown", ""); |
| if (result == NULL) |
| PyErr_WriteUnraisable(threading); |
| else |
| Py_DECREF(result); |
| Py_DECREF(threading); |
| #endif |
| } |
| |
| /* 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; |
| |
| 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 'd': |
| Py_DebugFlag++; |
| break; |
| |
| case 'i': |
| Py_InspectFlag++; |
| Py_InteractiveFlag++; |
| break; |
| |
| case 'O': |
| Py_OptimizeFlag++; |
| 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; |
| |
| case 'x': |
| skipfirstline = 1; |
| 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_InspectFlag && |
| (p = Py_GETENV("PYTHONINSPECT")) && *p != '\0') |
| Py_InspectFlag = 1; |
| if (!saw_unbuffered_flag && |
| (p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0') |
| unbuffered = 1; |
| |
| 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 |
| if (filename != NULL) { |
| if ((fp = fopen(filename, "r")) == NULL) { |
| #ifdef HAVE_STRERROR |
| fprintf(stderr, "%s: can't open file '%s': [Errno %d] %s\n", |
| argv[0], filename, errno, strerror(errno)); |
| #else |
| fprintf(stderr, "%s: can't open file '%s': Errno %d\n", |
| argv[0], filename, errno); |
| #endif |
| 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); |
| return 1; |
| } |
| } |
| } |
| } |
| |
| 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 ''*/ |
| _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); |
| free(module); |
| } |
| else { |
| if (filename == NULL && stdin_is_interactive) { |
| Py_InspectFlag = 0; /* do exit on SystemExit */ |
| RunStartupFile(&cf); |
| } |
| /* XXX */ |
| 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; |
| } |
| |
| WaitForThreadShutdown(); |
| |
| Py_Finalize(); |
| |
| #ifdef __INSURE__ |
| /* Insure++ is a memory analysis tool that aids in discovering |
| * memory leaks and other memory problems. On Python exit, the |
| * interned string dictionaries are 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(); |
| _Py_ReleaseInternedUnicodeStrings(); |
| #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 |
| |