diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Python/pythonrun.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Python/pythonrun.c Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,1942 @@ + +/* Python interpreter top-level routines, including init/exit */ + +#include "Python.h" + +#include "Python-ast.h" +#undef Yield /* undefine macro conflicting with winbase.h */ +#include "grammar.h" +#include "node.h" +#include "token.h" +#include "parsetok.h" +#include "errcode.h" +#include "code.h" +#include "compile.h" +#include "symtable.h" +#include "pyarena.h" +#include "ast.h" +#include "eval.h" +#include "marshal.h" + +#ifdef HAVE_SIGNAL_H +#include +#endif + +#ifdef HAVE_LANGINFO_H +#include +#include +#endif + +#ifdef MS_WINDOWS +#undef BYTE +#include "windows.h" +#endif + +#ifndef Py_REF_DEBUG +#define PRINT_TOTAL_REFS() +#else /* Py_REF_DEBUG */ +#define PRINT_TOTAL_REFS() fprintf(stderr, \ + "[%" PY_FORMAT_SIZE_T "d refs]\n", \ + _Py_GetRefTotal()) +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +extern char *Py_GetPath(void); + +extern grammar _PyParser_Grammar; /* From graminit.c */ + +/* Forward */ +static void initmain(void); +static void initsite(void); +static PyObject *run_mod(mod_ty, const char *, PyObject *, PyObject *, + PyCompilerFlags *, PyArena *); +static PyObject *run_pyc_file(FILE *, const char *, PyObject *, PyObject *, + PyCompilerFlags *); +static void err_input(perrdetail *); +static void initsigs(void); +static void call_sys_exitfunc(void); +static void call_ll_exitfuncs(void); +extern void _PyUnicode_Init(void); +extern void _PyUnicode_Fini(void); + +#ifdef WITH_THREAD +extern void _PyGILState_Init(PyInterpreterState *, PyThreadState *); +extern void _PyGILState_Fini(void); +#endif /* WITH_THREAD */ + +int Py_DebugFlag; /* Needed by parser.c */ +int Py_VerboseFlag; /* Needed by import.c */ +int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */ +int Py_InspectFlag; /* Needed to determine whether to exit at SystemError */ +int Py_NoSiteFlag; /* Suppress 'import site' */ +int Py_BytesWarningFlag; /* Warn on str(bytes) and str(buffer) */ +int Py_DontWriteBytecodeFlag; /* Suppress writing bytecode files (*.py[co]) */ +int Py_UseClassExceptionsFlag = 1; /* Needed by bltinmodule.c: deprecated */ +int Py_FrozenFlag; /* Needed by getpath.c */ +int Py_UnicodeFlag = 0; /* Needed by compile.c */ +int Py_IgnoreEnvironmentFlag; /* e.g. PYTHONPATH, PYTHONHOME */ +/* _XXX Py_QnewFlag should go away in 2.3. It's true iff -Qnew is passed, + on the command line, and is used in 2.2 by ceval.c to make all "/" divisions + true divisions (which they will be in 2.3). */ +int _Py_QnewFlag = 0; +int Py_NoUserSiteDirectory = 0; /* for -s and site.py */ + +/* PyModule_GetWarningsModule is no longer necessary as of 2.6 +since _warnings is builtin. This API should not be used. */ +PyObject * +PyModule_GetWarningsModule(void) +{ + return PyImport_ImportModule("warnings"); +} + +static int initialized = 0; + +/* API to access the initialized flag -- useful for esoteric use */ + +int +Py_IsInitialized(void) +{ + return initialized; +} + +/* Global initializations. Can be undone by Py_Finalize(). Don't + call this twice without an intervening Py_Finalize() call. When + initializations fail, a fatal error is issued and the function does + not return. On return, the first thread and interpreter state have + been created. + + Locking: you must hold the interpreter lock while calling this. + (If the lock has not yet been initialized, that's equivalent to + having the lock, but you cannot use multiple threads.) + +*/ + +static int +add_flag(int flag, const char *envs) +{ + int env = atoi(envs); + if (flag < env) + flag = env; + if (flag < 1) + flag = 1; + return flag; +} + +void +Py_InitializeEx(int install_sigs) +{ + PyInterpreterState *interp; + PyThreadState *tstate; + PyObject *bimod, *sysmod; + char *p; + char *icodeset = NULL; /* On Windows, input codeset may theoretically + differ from output codeset. */ + char *codeset = NULL; + char *errors = NULL; + int free_codeset = 0; + int overridden = 0; + PyObject *sys_stream, *sys_isatty; +#if defined(Py_USING_UNICODE) && defined(HAVE_LANGINFO_H) && defined(CODESET) + char *saved_locale, *loc_codeset; +#endif +#ifdef MS_WINDOWS + char ibuf[128]; + char buf[128]; +#endif + extern void _Py_ReadyTypes(void); + + if (initialized) + return; + initialized = 1; + + if ((p = Py_GETENV("PYTHONDEBUG")) && *p != '\0') + Py_DebugFlag = add_flag(Py_DebugFlag, p); + if ((p = Py_GETENV("PYTHONVERBOSE")) && *p != '\0') + Py_VerboseFlag = add_flag(Py_VerboseFlag, p); + if ((p = Py_GETENV("PYTHONOPTIMIZE")) && *p != '\0') + Py_OptimizeFlag = add_flag(Py_OptimizeFlag, p); + if ((p = Py_GETENV("PYTHONDONTWRITEBYTECODE")) && *p != '\0') + Py_DontWriteBytecodeFlag = add_flag(Py_DontWriteBytecodeFlag, p); + + interp = PyInterpreterState_New(); + if (interp == NULL) + Py_FatalError("Py_Initialize: can't make first interpreter"); + + tstate = PyThreadState_New(interp); + if (tstate == NULL) + Py_FatalError("Py_Initialize: can't make first thread"); + (void) PyThreadState_Swap(tstate); + + _Py_ReadyTypes(); + + if (!_PyFrame_Init()) + Py_FatalError("Py_Initialize: can't init frames"); + + if (!_PyInt_Init()) + Py_FatalError("Py_Initialize: can't init ints"); + + if (!PyByteArray_Init()) + Py_FatalError("Py_Initialize: can't init bytearray"); + + _PyFloat_Init(); + + interp->modules = PyDict_New(); + if (interp->modules == NULL) + Py_FatalError("Py_Initialize: can't make modules dictionary"); + interp->modules_reloading = PyDict_New(); + if (interp->modules_reloading == NULL) + Py_FatalError("Py_Initialize: can't make modules_reloading dictionary"); + +#ifdef Py_USING_UNICODE + /* Init Unicode implementation; relies on the codec registry */ + _PyUnicode_Init(); +#endif + + bimod = _PyBuiltin_Init(); + if (bimod == NULL) + Py_FatalError("Py_Initialize: can't initialize __builtin__"); + interp->builtins = PyModule_GetDict(bimod); + if (interp->builtins == NULL) + Py_FatalError("Py_Initialize: can't initialize builtins dict"); + Py_INCREF(interp->builtins); + + sysmod = _PySys_Init(); + if (sysmod == NULL) + Py_FatalError("Py_Initialize: can't initialize sys"); + interp->sysdict = PyModule_GetDict(sysmod); + if (interp->sysdict == NULL) + Py_FatalError("Py_Initialize: can't initialize sys dict"); + Py_INCREF(interp->sysdict); + _PyImport_FixupExtension("sys", "sys"); + PySys_SetPath(Py_GetPath()); + PyDict_SetItemString(interp->sysdict, "modules", + interp->modules); + + _PyImport_Init(); + + /* initialize builtin exceptions */ + _PyExc_Init(); + _PyImport_FixupExtension("exceptions", "exceptions"); + + /* phase 2 of builtins */ + _PyImport_FixupExtension("__builtin__", "__builtin__"); + + _PyImportHooks_Init(); + + if (install_sigs) + initsigs(); /* Signal handling stuff, including initintr() */ + + /* Initialize warnings. */ + _PyWarnings_Init(); + if (PySys_HasWarnOptions()) { + PyObject *warnings_module = PyImport_ImportModule("warnings"); + if (!warnings_module) + PyErr_Clear(); + Py_XDECREF(warnings_module); + } + + initmain(); /* Module __main__ */ + if (!Py_NoSiteFlag) + initsite(); /* Module site */ + + /* auto-thread-state API, if available */ +#ifdef WITH_THREAD + _PyGILState_Init(interp, tstate); +#endif /* WITH_THREAD */ + + if ((p = Py_GETENV("PYTHONIOENCODING")) && *p != '\0') { + p = icodeset = codeset = strdup(p); + free_codeset = 1; + errors = strchr(p, ':'); + if (errors) { + *errors = '\0'; + errors++; + } + overridden = 1; + } + +#if defined(Py_USING_UNICODE) && defined(HAVE_LANGINFO_H) && defined(CODESET) + /* On Unix, set the file system encoding according to the + user's preference, if the CODESET names a well-known + Python codec, and Py_FileSystemDefaultEncoding isn't + initialized by other means. Also set the encoding of + stdin and stdout if these are terminals, unless overridden. */ + + if (!overridden || !Py_FileSystemDefaultEncoding) { + saved_locale = strdup(setlocale(LC_CTYPE, NULL)); + setlocale(LC_CTYPE, ""); + loc_codeset = nl_langinfo(CODESET); + if (loc_codeset && *loc_codeset) { + PyObject *enc = PyCodec_Encoder(loc_codeset); + if (enc) { + loc_codeset = strdup(loc_codeset); + Py_DECREF(enc); + } else { + loc_codeset = NULL; + PyErr_Clear(); + } + } else + loc_codeset = NULL; + setlocale(LC_CTYPE, saved_locale); + free(saved_locale); + + if (!overridden) { + codeset = icodeset = loc_codeset; + free_codeset = 1; + } + + /* Initialize Py_FileSystemDefaultEncoding from + locale even if PYTHONIOENCODING is set. */ + if (!Py_FileSystemDefaultEncoding) { + Py_FileSystemDefaultEncoding = loc_codeset; + if (!overridden) + free_codeset = 0; + } + } +#endif + +#ifdef MS_WINDOWS + if (!overridden) { + icodeset = ibuf; + codeset = buf; + sprintf(ibuf, "cp%d", GetConsoleCP()); + sprintf(buf, "cp%d", GetConsoleOutputCP()); + } +#endif + + if (codeset) { + sys_stream = PySys_GetObject("stdin"); + sys_isatty = PyObject_CallMethod(sys_stream, "isatty", ""); + if (!sys_isatty) + PyErr_Clear(); + if ((overridden || + (sys_isatty && PyObject_IsTrue(sys_isatty))) && + PyFile_Check(sys_stream)) { + if (!PyFile_SetEncodingAndErrors(sys_stream, icodeset, errors)) + Py_FatalError("Cannot set codeset of stdin"); + } + Py_XDECREF(sys_isatty); + + sys_stream = PySys_GetObject("stdout"); + sys_isatty = PyObject_CallMethod(sys_stream, "isatty", ""); + if (!sys_isatty) + PyErr_Clear(); + if ((overridden || + (sys_isatty && PyObject_IsTrue(sys_isatty))) && + PyFile_Check(sys_stream)) { + if (!PyFile_SetEncodingAndErrors(sys_stream, codeset, errors)) + Py_FatalError("Cannot set codeset of stdout"); + } + Py_XDECREF(sys_isatty); + + sys_stream = PySys_GetObject("stderr"); + sys_isatty = PyObject_CallMethod(sys_stream, "isatty", ""); + if (!sys_isatty) + PyErr_Clear(); + if((overridden || + (sys_isatty && PyObject_IsTrue(sys_isatty))) && + PyFile_Check(sys_stream)) { + if (!PyFile_SetEncodingAndErrors(sys_stream, codeset, errors)) + Py_FatalError("Cannot set codeset of stderr"); + } + Py_XDECREF(sys_isatty); + + if (free_codeset) + free(codeset); + } +} + +void +Py_Initialize(void) +{ + Py_InitializeEx(1); +} + + +#ifdef COUNT_ALLOCS +extern void dump_counts(FILE*); +#endif + +/* Undo the effect of Py_Initialize(). + + Beware: if multiple interpreter and/or thread states exist, these + are not wiped out; only the current thread and interpreter state + are deleted. But since everything else is deleted, those other + interpreter and thread states should no longer be used. + + (XXX We should do better, e.g. wipe out all interpreters and + threads.) + + Locking: as above. + +*/ + +void +Py_Finalize(void) +{ + PyInterpreterState *interp; + PyThreadState *tstate; + + if (!initialized) + return; + + /* The interpreter is still entirely intact at this point, and the + * exit funcs may be relying on that. In particular, if some thread + * or exit func is still waiting to do an import, the import machinery + * expects Py_IsInitialized() to return true. So don't say the + * interpreter is uninitialized until after the exit funcs have run. + * Note that Threading.py uses an exit func to do a join on all the + * threads created thru it, so this also protects pending imports in + * the threads created via Threading. + */ + call_sys_exitfunc(); + initialized = 0; + + /* Get current thread state and interpreter pointer */ + tstate = PyThreadState_GET(); + interp = tstate->interp; + + /* Disable signal handling */ + PyOS_FiniInterrupts(); + + /* Clear type lookup cache */ + PyType_ClearCache(); + + /* Collect garbage. This may call finalizers; it's nice to call these + * before all modules are destroyed. + * XXX If a __del__ or weakref callback is triggered here, and tries to + * XXX import a module, bad things can happen, because Python no + * XXX longer believes it's initialized. + * XXX Fatal Python error: Interpreter not initialized (version mismatch?) + * XXX is easy to provoke that way. I've also seen, e.g., + * XXX Exception exceptions.ImportError: 'No module named sha' + * XXX in ignored + * XXX but I'm unclear on exactly how that one happens. In any case, + * XXX I haven't seen a real-life report of either of these. + */ + PyGC_Collect(); +#ifdef COUNT_ALLOCS + /* With COUNT_ALLOCS, it helps to run GC multiple times: + each collection might release some types from the type + list, so they become garbage. */ + while (PyGC_Collect() > 0) + /* nothing */; +#endif + + /* Destroy all modules */ + PyImport_Cleanup(); + + /* Collect final garbage. This disposes of cycles created by + * new-style class definitions, for example. + * XXX This is disabled because it caused too many problems. If + * XXX a __del__ or weakref callback triggers here, Python code has + * XXX a hard time running, because even the sys module has been + * XXX cleared out (sys.stdout is gone, sys.excepthook is gone, etc). + * XXX One symptom is a sequence of information-free messages + * XXX coming from threads (if a __del__ or callback is invoked, + * XXX other threads can execute too, and any exception they encounter + * XXX triggers a comedy of errors as subsystem after subsystem + * XXX fails to find what it *expects* to find in sys to help report + * XXX the exception and consequent unexpected failures). I've also + * XXX seen segfaults then, after adding print statements to the + * XXX Python code getting called. + */ +#if 0 + PyGC_Collect(); +#endif + + /* Destroy the database used by _PyImport_{Fixup,Find}Extension */ + _PyImport_Fini(); + + /* Debugging stuff */ +#ifdef COUNT_ALLOCS + dump_counts(stdout); +#endif + + PRINT_TOTAL_REFS(); + +#ifdef Py_TRACE_REFS + /* Display all objects still alive -- this can invoke arbitrary + * __repr__ overrides, so requires a mostly-intact interpreter. + * Alas, a lot of stuff may still be alive now that will be cleaned + * up later. + */ + if (Py_GETENV("PYTHONDUMPREFS")) + _Py_PrintReferences(stderr); +#endif /* Py_TRACE_REFS */ + + /* Clear interpreter state */ + PyInterpreterState_Clear(interp); + + /* Now we decref the exception classes. After this point nothing + can raise an exception. That's okay, because each Fini() method + below has been checked to make sure no exceptions are ever + raised. + */ + + _PyExc_Fini(); + + /* Cleanup auto-thread-state */ +#ifdef WITH_THREAD + _PyGILState_Fini(); +#endif /* WITH_THREAD */ + + /* Delete current thread */ + PyThreadState_Swap(NULL); + PyInterpreterState_Delete(interp); + + /* Sundry finalizers */ + PyMethod_Fini(); + PyFrame_Fini(); + PyCFunction_Fini(); + PyTuple_Fini(); + PyList_Fini(); + PySet_Fini(); + PyString_Fini(); + PyByteArray_Fini(); + PyInt_Fini(); + PyFloat_Fini(); + PyDict_Fini(); + +#ifdef Py_USING_UNICODE + /* Cleanup Unicode implementation */ + _PyUnicode_Fini(); +#endif + + /* XXX Still allocated: + - various static ad-hoc pointers to interned strings + - int and float free list blocks + - whatever various modules and libraries allocate + */ + + PyGrammar_RemoveAccelerators(&_PyParser_Grammar); + +#ifdef Py_TRACE_REFS + /* Display addresses (& refcnts) of all objects still alive. + * An address can be used to find the repr of the object, printed + * above by _Py_PrintReferences. + */ + if (Py_GETENV("PYTHONDUMPREFS")) + _Py_PrintReferenceAddresses(stderr); +#endif /* Py_TRACE_REFS */ +#ifdef PYMALLOC_DEBUG + if (Py_GETENV("PYTHONMALLOCSTATS")) + _PyObject_DebugMallocStats(); +#endif + + call_ll_exitfuncs(); +} + +/* Create and initialize a new interpreter and thread, and return the + new thread. This requires that Py_Initialize() has been called + first. + + Unsuccessful initialization yields a NULL pointer. Note that *no* + exception information is available even in this case -- the + exception information is held in the thread, and there is no + thread. + + Locking: as above. + +*/ + +PyThreadState * +Py_NewInterpreter(void) +{ + PyInterpreterState *interp; + PyThreadState *tstate, *save_tstate; + PyObject *bimod, *sysmod; + + if (!initialized) + Py_FatalError("Py_NewInterpreter: call Py_Initialize first"); + + interp = PyInterpreterState_New(); + if (interp == NULL) + return NULL; + + tstate = PyThreadState_New(interp); + if (tstate == NULL) { + PyInterpreterState_Delete(interp); + return NULL; + } + + save_tstate = PyThreadState_Swap(tstate); + + /* XXX The following is lax in error checking */ + + interp->modules = PyDict_New(); + interp->modules_reloading = PyDict_New(); + + bimod = _PyImport_FindExtension("__builtin__", "__builtin__"); + if (bimod != NULL) { + interp->builtins = PyModule_GetDict(bimod); + if (interp->builtins == NULL) + goto handle_error; + Py_INCREF(interp->builtins); + } + sysmod = _PyImport_FindExtension("sys", "sys"); + if (bimod != NULL && sysmod != NULL) { + interp->sysdict = PyModule_GetDict(sysmod); + if (interp->sysdict == NULL) + goto handle_error; + Py_INCREF(interp->sysdict); + PySys_SetPath(Py_GetPath()); + PyDict_SetItemString(interp->sysdict, "modules", + interp->modules); + _PyImportHooks_Init(); + initmain(); + if (!Py_NoSiteFlag) + initsite(); + } + + if (!PyErr_Occurred()) + return tstate; + +handle_error: + /* Oops, it didn't work. Undo it all. */ + + PyErr_Print(); + PyThreadState_Clear(tstate); + PyThreadState_Swap(save_tstate); + PyThreadState_Delete(tstate); + PyInterpreterState_Delete(interp); + + return NULL; +} + +/* Delete an interpreter and its last thread. This requires that the + given thread state is current, that the thread has no remaining + frames, and that it is its interpreter's only remaining thread. + It is a fatal error to violate these constraints. + + (Py_Finalize() doesn't have these constraints -- it zaps + everything, regardless.) + + Locking: as above. + +*/ + +void +Py_EndInterpreter(PyThreadState *tstate) +{ + PyInterpreterState *interp = tstate->interp; + + if (tstate != PyThreadState_GET()) + Py_FatalError("Py_EndInterpreter: thread is not current"); + if (tstate->frame != NULL) + Py_FatalError("Py_EndInterpreter: thread still has a frame"); + if (tstate != interp->tstate_head || tstate->next != NULL) + Py_FatalError("Py_EndInterpreter: not the last thread"); + + PyImport_Cleanup(); + PyInterpreterState_Clear(interp); + PyThreadState_Swap(NULL); + PyInterpreterState_Delete(interp); +} + +static char *progname = "python"; + +void +Py_SetProgramName(char *pn) +{ + if (pn && *pn) + progname = pn; +} + +char * +Py_GetProgramName(void) +{ + return progname; +} + +static char *default_home = NULL; + +void +Py_SetPythonHome(char *home) +{ + default_home = home; +} + +char * +Py_GetPythonHome(void) +{ + char *home = default_home; + if (home == NULL && !Py_IgnoreEnvironmentFlag) + home = Py_GETENV("PYTHONHOME"); + return home; +} + +/* Create __main__ module */ + +static void +initmain(void) +{ + PyObject *m, *d; + m = PyImport_AddModule("__main__"); + if (m == NULL) + Py_FatalError("can't create __main__ module"); + d = PyModule_GetDict(m); + if (PyDict_GetItemString(d, "__builtins__") == NULL) { + PyObject *bimod = PyImport_ImportModule("__builtin__"); + if (bimod == NULL || + PyDict_SetItemString(d, "__builtins__", bimod) != 0) + Py_FatalError("can't add __builtins__ to __main__"); + Py_DECREF(bimod); + } +} + +/* Import the site module (not into __main__ though) */ + +static void +initsite(void) +{ + PyObject *m, *f; + m = PyImport_ImportModule("site"); + if (m == NULL) { + f = PySys_GetObject("stderr"); + if (Py_VerboseFlag) { + PyFile_WriteString( + "'import site' failed; traceback:\n", f); + PyErr_Print(); + } + else { + PyFile_WriteString( + "'import site' failed; use -v for traceback\n", f); + PyErr_Clear(); + } + } + else { + Py_DECREF(m); + } +} + +/* Parse input from a file and execute it */ + +int +PyRun_AnyFileExFlags(FILE *fp, const char *filename, int closeit, + PyCompilerFlags *flags) +{ + if (filename == NULL) + filename = "???"; + if (Py_FdIsInteractive(fp, filename)) { + int err = PyRun_InteractiveLoopFlags(fp, filename, flags); + if (closeit) + fclose(fp); + return err; + } + else + return PyRun_SimpleFileExFlags(fp, filename, closeit, flags); +} + +int +PyRun_InteractiveLoopFlags(FILE *fp, const char *filename, PyCompilerFlags *flags) +{ + PyObject *v; + int ret; + PyCompilerFlags local_flags; + + if (flags == NULL) { + flags = &local_flags; + local_flags.cf_flags = 0; + } + v = PySys_GetObject("ps1"); + if (v == NULL) { + PySys_SetObject("ps1", v = PyString_FromString(">>> ")); + Py_XDECREF(v); + } + v = PySys_GetObject("ps2"); + if (v == NULL) { + PySys_SetObject("ps2", v = PyString_FromString("... ")); + Py_XDECREF(v); + } + for (;;) { + ret = PyRun_InteractiveOneFlags(fp, filename, flags); + PRINT_TOTAL_REFS(); + if (ret == E_EOF) + return 0; + /* + if (ret == E_NOMEM) + return -1; + */ + } +} + +#if 0 +/* compute parser flags based on compiler flags */ +#define PARSER_FLAGS(flags) \ + ((flags) ? ((((flags)->cf_flags & PyCF_DONT_IMPLY_DEDENT) ? \ + PyPARSE_DONT_IMPLY_DEDENT : 0)) : 0) +#endif +#if 1 +/* Keep an example of flags with future keyword support. */ +#define PARSER_FLAGS(flags) \ + ((flags) ? ((((flags)->cf_flags & PyCF_DONT_IMPLY_DEDENT) ? \ + PyPARSE_DONT_IMPLY_DEDENT : 0) \ + | (((flags)->cf_flags & CO_FUTURE_PRINT_FUNCTION) ? \ + PyPARSE_PRINT_IS_FUNCTION : 0) \ + | (((flags)->cf_flags & CO_FUTURE_UNICODE_LITERALS) ? \ + PyPARSE_UNICODE_LITERALS : 0) \ + ) : 0) +#endif + +int +PyRun_InteractiveOneFlags(FILE *fp, const char *filename, PyCompilerFlags *flags) +{ + PyObject *m, *d, *v, *w; + mod_ty mod; + PyArena *arena; + char *ps1 = "", *ps2 = ""; + int errcode = 0; + + v = PySys_GetObject("ps1"); + if (v != NULL) { + v = PyObject_Str(v); + if (v == NULL) + PyErr_Clear(); + else if (PyString_Check(v)) + ps1 = PyString_AsString(v); + } + w = PySys_GetObject("ps2"); + if (w != NULL) { + w = PyObject_Str(w); + if (w == NULL) + PyErr_Clear(); + else if (PyString_Check(w)) + ps2 = PyString_AsString(w); + } + arena = PyArena_New(); + if (arena == NULL) { + Py_XDECREF(v); + Py_XDECREF(w); + return -1; + } + mod = PyParser_ASTFromFile(fp, filename, + Py_single_input, ps1, ps2, + flags, &errcode, arena); + Py_XDECREF(v); + Py_XDECREF(w); + if (mod == NULL) { + PyArena_Free(arena); + if (errcode == E_EOF) { + PyErr_Clear(); + return E_EOF; + } + PyErr_Print(); + return -1; + } + m = PyImport_AddModule("__main__"); + if (m == NULL) { + PyArena_Free(arena); + return -1; + } + d = PyModule_GetDict(m); + v = run_mod(mod, filename, d, d, flags, arena); + PyArena_Free(arena); + if (v == NULL) { + PyErr_Print(); + return -1; + } + Py_DECREF(v); + if (Py_FlushLine()) + PyErr_Clear(); + return 0; +} + +/* Check whether a file maybe a pyc file: Look at the extension, + the file type, and, if we may close it, at the first few bytes. */ + +static int +maybe_pyc_file(FILE *fp, const char* filename, const char* ext, int closeit) +{ + if (strcmp(ext, ".pyc") == 0 || strcmp(ext, ".pyo") == 0) + return 1; + + /* Only look into the file if we are allowed to close it, since + it then should also be seekable. */ + if (closeit) { + /* Read only two bytes of the magic. If the file was opened in + text mode, the bytes 3 and 4 of the magic (\r\n) might not + be read as they are on disk. */ + unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF; + unsigned char buf[2]; + /* Mess: In case of -x, the stream is NOT at its start now, + and ungetc() was used to push back the first newline, + which makes the current stream position formally undefined, + and a x-platform nightmare. + Unfortunately, we have no direct way to know whether -x + was specified. So we use a terrible hack: if the current + stream position is not 0, we assume -x was specified, and + give up. Bug 132850 on SourceForge spells out the + hopelessness of trying anything else (fseek and ftell + don't work predictably x-platform for text-mode files). + */ + int ispyc = 0; + if (ftell(fp) == 0) { + if (fread(buf, 1, 2, fp) == 2 && + ((unsigned int)buf[1]<<8 | buf[0]) == halfmagic) + ispyc = 1; + rewind(fp); + } + return ispyc; + } + return 0; +} + +int +PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, + PyCompilerFlags *flags) +{ + PyObject *m, *d, *v; + const char *ext; + int set_file_name = 0, ret; + + m = PyImport_AddModule("__main__"); + if (m == NULL) + return -1; + d = PyModule_GetDict(m); + if (PyDict_GetItemString(d, "__file__") == NULL) { + PyObject *f = PyString_FromString(filename); + if (f == NULL) + return -1; + if (PyDict_SetItemString(d, "__file__", f) < 0) { + Py_DECREF(f); + return -1; + } + set_file_name = 1; + Py_DECREF(f); + } + ext = filename + strlen(filename) - 4; + if (maybe_pyc_file(fp, filename, ext, closeit)) { + /* Try to run a pyc file. First, re-open in binary */ + if (closeit) + fclose(fp); + if ((fp = fopen(filename, "rb")) == NULL) { + fprintf(stderr, "python: Can't reopen .pyc file\n"); + ret = -1; + goto done; + } + /* Turn on optimization if a .pyo file is given */ + if (strcmp(ext, ".pyo") == 0) + Py_OptimizeFlag = 1; + v = run_pyc_file(fp, filename, d, d, flags); + } else { + v = PyRun_FileExFlags(fp, filename, Py_file_input, d, d, + closeit, flags); + } + if (v == NULL) { + PyErr_Print(); + ret = -1; + goto done; + } + Py_DECREF(v); + if (Py_FlushLine()) + PyErr_Clear(); + ret = 0; + done: + if (set_file_name && PyDict_DelItemString(d, "__file__")) + PyErr_Clear(); + return ret; +} + +int +PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags) +{ + PyObject *m, *d, *v; + m = PyImport_AddModule("__main__"); + if (m == NULL) + return -1; + d = PyModule_GetDict(m); + v = PyRun_StringFlags(command, Py_file_input, d, d, flags); + if (v == NULL) { + PyErr_Print(); + return -1; + } + Py_DECREF(v); + if (Py_FlushLine()) + PyErr_Clear(); + return 0; +} + +static int +parse_syntax_error(PyObject *err, PyObject **message, const char **filename, + int *lineno, int *offset, const char **text) +{ + long hold; + PyObject *v; + + /* old style errors */ + if (PyTuple_Check(err)) + return PyArg_ParseTuple(err, "O(ziiz)", message, filename, + lineno, offset, text); + + /* new style errors. `err' is an instance */ + + if (! (v = PyObject_GetAttrString(err, "msg"))) + goto finally; + *message = v; + + if (!(v = PyObject_GetAttrString(err, "filename"))) + goto finally; + if (v == Py_None) + *filename = NULL; + else if (! (*filename = PyString_AsString(v))) + goto finally; + + Py_DECREF(v); + if (!(v = PyObject_GetAttrString(err, "lineno"))) + goto finally; + hold = PyInt_AsLong(v); + Py_DECREF(v); + v = NULL; + if (hold < 0 && PyErr_Occurred()) + goto finally; + *lineno = (int)hold; + + if (!(v = PyObject_GetAttrString(err, "offset"))) + goto finally; + if (v == Py_None) { + *offset = -1; + Py_DECREF(v); + v = NULL; + } else { + hold = PyInt_AsLong(v); + Py_DECREF(v); + v = NULL; + if (hold < 0 && PyErr_Occurred()) + goto finally; + *offset = (int)hold; + } + + if (!(v = PyObject_GetAttrString(err, "text"))) + goto finally; + if (v == Py_None) + *text = NULL; + else if (! (*text = PyString_AsString(v))) + goto finally; + Py_DECREF(v); + return 1; + +finally: + Py_XDECREF(v); + return 0; +} + +void +PyErr_Print(void) +{ + PyErr_PrintEx(1); +} + +static void +print_error_text(PyObject *f, int offset, const char *text) +{ + char *nl; + if (offset >= 0) { + if (offset > 0 && offset == (int)strlen(text)) + offset--; + for (;;) { + nl = strchr(text, '\n'); + if (nl == NULL || nl-text >= offset) + break; + offset -= (int)(nl+1-text); + text = nl+1; + } + while (*text == ' ' || *text == '\t') { + text++; + offset--; + } + } + PyFile_WriteString(" ", f); + PyFile_WriteString(text, f); + if (*text == '\0' || text[strlen(text)-1] != '\n') + PyFile_WriteString("\n", f); + if (offset == -1) + return; + PyFile_WriteString(" ", f); + offset--; + while (offset > 0) { + PyFile_WriteString(" ", f); + offset--; + } + PyFile_WriteString("^\n", f); +} + +static void +handle_system_exit(void) +{ + PyObject *exception, *value, *tb; + int exitcode = 0; + + if (Py_InspectFlag) + /* Don't exit if -i flag was given. This flag is set to 0 + * when entering interactive mode for inspecting. */ + return; + + PyErr_Fetch(&exception, &value, &tb); + if (Py_FlushLine()) + PyErr_Clear(); + fflush(stdout); + if (value == NULL || value == Py_None) + goto done; + if (PyExceptionInstance_Check(value)) { + /* The error code should be in the `code' attribute. */ + PyObject *code = PyObject_GetAttrString(value, "code"); + if (code) { + Py_DECREF(value); + value = code; + if (value == Py_None) + goto done; + } + /* If we failed to dig out the 'code' attribute, + just let the else clause below print the error. */ + } + if (PyInt_Check(value)) + exitcode = (int)PyInt_AsLong(value); + else { + PyObject_Print(value, stderr, Py_PRINT_RAW); + PySys_WriteStderr("\n"); + exitcode = 1; + } + done: + /* Restore and clear the exception info, in order to properly decref + * the exception, value, and traceback. If we just exit instead, + * these leak, which confuses PYTHONDUMPREFS output, and may prevent + * some finalizers from running. + */ + PyErr_Restore(exception, value, tb); + PyErr_Clear(); + Py_Exit(exitcode); + /* NOTREACHED */ +} + +void +PyErr_PrintEx(int set_sys_last_vars) +{ + PyObject *exception, *v, *tb, *hook; + + if (PyErr_ExceptionMatches(PyExc_SystemExit)) { + handle_system_exit(); + } + PyErr_Fetch(&exception, &v, &tb); + if (exception == NULL) + return; + PyErr_NormalizeException(&exception, &v, &tb); + if (exception == NULL) + return; + /* Now we know v != NULL too */ + if (set_sys_last_vars) { + PySys_SetObject("last_type", exception); + PySys_SetObject("last_value", v); + PySys_SetObject("last_traceback", tb); + } + hook = PySys_GetObject("excepthook"); + if (hook) { + PyObject *args = PyTuple_Pack(3, + exception, v, tb ? tb : Py_None); + PyObject *result = PyEval_CallObject(hook, args); + if (result == NULL) { + PyObject *exception2, *v2, *tb2; + if (PyErr_ExceptionMatches(PyExc_SystemExit)) { + handle_system_exit(); + } + PyErr_Fetch(&exception2, &v2, &tb2); + PyErr_NormalizeException(&exception2, &v2, &tb2); + /* It should not be possible for exception2 or v2 + to be NULL. However PyErr_Display() can't + tolerate NULLs, so just be safe. */ + if (exception2 == NULL) { + exception2 = Py_None; + Py_INCREF(exception2); + } + if (v2 == NULL) { + v2 = Py_None; + Py_INCREF(v2); + } + if (Py_FlushLine()) + PyErr_Clear(); + fflush(stdout); + PySys_WriteStderr("Error in sys.excepthook:\n"); + PyErr_Display(exception2, v2, tb2); + PySys_WriteStderr("\nOriginal exception was:\n"); + PyErr_Display(exception, v, tb); + Py_DECREF(exception2); + Py_DECREF(v2); + Py_XDECREF(tb2); + } + Py_XDECREF(result); + Py_XDECREF(args); + } else { + PySys_WriteStderr("sys.excepthook is missing\n"); + PyErr_Display(exception, v, tb); + } + Py_XDECREF(exception); + Py_XDECREF(v); + Py_XDECREF(tb); +} + +void +PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb) +{ + int err = 0; + PyObject *f = PySys_GetObject("stderr"); + Py_INCREF(value); + if (f == NULL) + fprintf(stderr, "lost sys.stderr\n"); + else { + if (Py_FlushLine()) + PyErr_Clear(); + fflush(stdout); + if (tb && tb != Py_None) + err = PyTraceBack_Print(tb, f); + if (err == 0 && + PyObject_HasAttrString(value, "print_file_and_line")) + { + PyObject *message; + const char *filename, *text; + int lineno, offset; + if (!parse_syntax_error(value, &message, &filename, + &lineno, &offset, &text)) + PyErr_Clear(); + else { + char buf[10]; + PyFile_WriteString(" File \"", f); + if (filename == NULL) + PyFile_WriteString("", f); + else + PyFile_WriteString(filename, f); + PyFile_WriteString("\", line ", f); + PyOS_snprintf(buf, sizeof(buf), "%d", lineno); + PyFile_WriteString(buf, f); + PyFile_WriteString("\n", f); + if (text != NULL) + print_error_text(f, offset, text); + Py_DECREF(value); + value = message; + /* Can't be bothered to check all those + PyFile_WriteString() calls */ + if (PyErr_Occurred()) + err = -1; + } + } + if (err) { + /* Don't do anything else */ + } + else if (PyExceptionClass_Check(exception)) { + PyObject* moduleName; + char* className = PyExceptionClass_Name(exception); + if (className != NULL) { + char *dot = strrchr(className, '.'); + if (dot != NULL) + className = dot+1; + } + + moduleName = PyObject_GetAttrString(exception, "__module__"); + if (moduleName == NULL) + err = PyFile_WriteString("", f); + else { + char* modstr = PyString_AsString(moduleName); + if (modstr && strcmp(modstr, "exceptions")) + { + err = PyFile_WriteString(modstr, f); + err += PyFile_WriteString(".", f); + } + Py_DECREF(moduleName); + } + if (err == 0) { + if (className == NULL) + err = PyFile_WriteString("", f); + else + err = PyFile_WriteString(className, f); + } + } + else + err = PyFile_WriteObject(exception, f, Py_PRINT_RAW); + if (err == 0 && (value != Py_None)) { + PyObject *s = PyObject_Str(value); + /* only print colon if the str() of the + object is not the empty string + */ + if (s == NULL) + err = -1; + else if (!PyString_Check(s) || + PyString_GET_SIZE(s) != 0) + err = PyFile_WriteString(": ", f); + if (err == 0) + err = PyFile_WriteObject(s, f, Py_PRINT_RAW); + Py_XDECREF(s); + } + /* try to write a newline in any case */ + err += PyFile_WriteString("\n", f); + } + Py_DECREF(value); + /* If an error happened here, don't show it. + XXX This is wrong, but too many callers rely on this behavior. */ + if (err != 0) + PyErr_Clear(); +} + +PyObject * +PyRun_StringFlags(const char *str, int start, PyObject *globals, + PyObject *locals, PyCompilerFlags *flags) +{ + PyObject *ret = NULL; + mod_ty mod; + PyArena *arena = PyArena_New(); + if (arena == NULL) + return NULL; + + mod = PyParser_ASTFromString(str, "", start, flags, arena); + if (mod != NULL) + ret = run_mod(mod, "", globals, locals, flags, arena); + PyArena_Free(arena); + return ret; +} + +PyObject * +PyRun_FileExFlags(FILE *fp, const char *filename, int start, PyObject *globals, + PyObject *locals, int closeit, PyCompilerFlags *flags) +{ + PyObject *ret; + mod_ty mod; + PyArena *arena = PyArena_New(); + if (arena == NULL) + return NULL; + + mod = PyParser_ASTFromFile(fp, filename, start, 0, 0, + flags, NULL, arena); + if (closeit) + fclose(fp); + if (mod == NULL) { + PyArena_Free(arena); + return NULL; + } + ret = run_mod(mod, filename, globals, locals, flags, arena); + PyArena_Free(arena); + return ret; +} + +static PyObject * +run_mod(mod_ty mod, const char *filename, PyObject *globals, PyObject *locals, + PyCompilerFlags *flags, PyArena *arena) +{ + PyCodeObject *co; + PyObject *v; + co = PyAST_Compile(mod, filename, flags, arena); + if (co == NULL) + return NULL; + v = PyEval_EvalCode(co, globals, locals); + Py_DECREF(co); + return v; +} + +static PyObject * +run_pyc_file(FILE *fp, const char *filename, PyObject *globals, + PyObject *locals, PyCompilerFlags *flags) +{ + PyCodeObject *co; + PyObject *v; + long magic; + long PyImport_GetMagicNumber(void); + + magic = PyMarshal_ReadLongFromFile(fp); + if (magic != PyImport_GetMagicNumber()) { + PyErr_SetString(PyExc_RuntimeError, + "Bad magic number in .pyc file"); + return NULL; + } + (void) PyMarshal_ReadLongFromFile(fp); + v = PyMarshal_ReadLastObjectFromFile(fp); + fclose(fp); + if (v == NULL || !PyCode_Check(v)) { + Py_XDECREF(v); + PyErr_SetString(PyExc_RuntimeError, + "Bad code object in .pyc file"); + return NULL; + } + co = (PyCodeObject *)v; + v = PyEval_EvalCode(co, globals, locals); + if (v && flags) + flags->cf_flags |= (co->co_flags & PyCF_MASK); + Py_DECREF(co); + return v; +} + +PyObject * +Py_CompileStringFlags(const char *str, const char *filename, int start, + PyCompilerFlags *flags) +{ + PyCodeObject *co; + mod_ty mod; + PyArena *arena = PyArena_New(); + if (arena == NULL) + return NULL; + + mod = PyParser_ASTFromString(str, filename, start, flags, arena); + if (mod == NULL) { + PyArena_Free(arena); + return NULL; + } + if (flags && (flags->cf_flags & PyCF_ONLY_AST)) { + PyObject *result = PyAST_mod2obj(mod); + PyArena_Free(arena); + return result; + } + co = PyAST_Compile(mod, filename, flags, arena); + PyArena_Free(arena); + return (PyObject *)co; +} + +struct symtable * +Py_SymtableString(const char *str, const char *filename, int start) +{ + struct symtable *st; + mod_ty mod; + PyCompilerFlags flags; + PyArena *arena = PyArena_New(); + if (arena == NULL) + return NULL; + + flags.cf_flags = 0; + + mod = PyParser_ASTFromString(str, filename, start, &flags, arena); + if (mod == NULL) { + PyArena_Free(arena); + return NULL; + } + st = PySymtable_Build(mod, filename, 0); + PyArena_Free(arena); + return st; +} + +/* Preferred access to parser is through AST. */ +mod_ty +PyParser_ASTFromString(const char *s, const char *filename, int start, + PyCompilerFlags *flags, PyArena *arena) +{ + mod_ty mod; + PyCompilerFlags localflags; + perrdetail err; + int iflags = PARSER_FLAGS(flags); + + node *n = PyParser_ParseStringFlagsFilenameEx(s, filename, + &_PyParser_Grammar, start, &err, + &iflags); + if (flags == NULL) { + localflags.cf_flags = 0; + flags = &localflags; + } + if (n) { + flags->cf_flags |= iflags & PyCF_MASK; + mod = PyAST_FromNode(n, flags, filename, arena); + PyNode_Free(n); + return mod; + } + else { + err_input(&err); + return NULL; + } +} + +mod_ty +PyParser_ASTFromFile(FILE *fp, const char *filename, int start, char *ps1, + char *ps2, PyCompilerFlags *flags, int *errcode, + PyArena *arena) +{ + mod_ty mod; + PyCompilerFlags localflags; + perrdetail err; + int iflags = PARSER_FLAGS(flags); + + node *n = PyParser_ParseFileFlagsEx(fp, filename, &_PyParser_Grammar, + start, ps1, ps2, &err, &iflags); + if (flags == NULL) { + localflags.cf_flags = 0; + flags = &localflags; + } + if (n) { + flags->cf_flags |= iflags & PyCF_MASK; + mod = PyAST_FromNode(n, flags, filename, arena); + PyNode_Free(n); + return mod; + } + else { + err_input(&err); + if (errcode) + *errcode = err.error; + return NULL; + } +} + +/* Simplified interface to parsefile -- return node or set exception */ + +node * +PyParser_SimpleParseFileFlags(FILE *fp, const char *filename, int start, int flags) +{ + perrdetail err; + node *n = PyParser_ParseFileFlags(fp, filename, &_PyParser_Grammar, + start, NULL, NULL, &err, flags); + if (n == NULL) + err_input(&err); + + return n; +} + +/* Simplified interface to parsestring -- return node or set exception */ + +node * +PyParser_SimpleParseStringFlags(const char *str, int start, int flags) +{ + perrdetail err; + node *n = PyParser_ParseStringFlags(str, &_PyParser_Grammar, + start, &err, flags); + if (n == NULL) + err_input(&err); + return n; +} + +node * +PyParser_SimpleParseStringFlagsFilename(const char *str, const char *filename, + int start, int flags) +{ + perrdetail err; + node *n = PyParser_ParseStringFlagsFilename(str, filename, + &_PyParser_Grammar, start, &err, flags); + if (n == NULL) + err_input(&err); + return n; +} + +node * +PyParser_SimpleParseStringFilename(const char *str, const char *filename, int start) +{ + return PyParser_SimpleParseStringFlagsFilename(str, filename, start, 0); +} + +/* May want to move a more generalized form of this to parsetok.c or + even parser modules. */ + +void +PyParser_SetError(perrdetail *err) +{ + err_input(err); +} + +/* Set the error appropriate to the given input error code (see errcode.h) */ + +static void +err_input(perrdetail *err) +{ + PyObject *v, *w, *errtype; + PyObject* u = NULL; + char *msg = NULL; + errtype = PyExc_SyntaxError; + switch (err->error) { + case E_SYNTAX: + errtype = PyExc_IndentationError; + if (err->expected == INDENT) + msg = "expected an indented block"; + else if (err->token == INDENT) + msg = "unexpected indent"; + else if (err->token == DEDENT) + msg = "unexpected unindent"; + else { + errtype = PyExc_SyntaxError; + msg = "invalid syntax"; + } + break; + case E_TOKEN: + msg = "invalid token"; + break; + case E_EOFS: + msg = "EOF while scanning triple-quoted string literal"; + break; + case E_EOLS: + msg = "EOL while scanning string literal"; + break; + case E_INTR: + if (!PyErr_Occurred()) + PyErr_SetNone(PyExc_KeyboardInterrupt); + goto cleanup; + case E_NOMEM: + PyErr_NoMemory(); + goto cleanup; + case E_EOF: + msg = "unexpected EOF while parsing"; + break; + case E_TABSPACE: + errtype = PyExc_TabError; + msg = "inconsistent use of tabs and spaces in indentation"; + break; + case E_OVERFLOW: + msg = "expression too long"; + break; + case E_DEDENT: + errtype = PyExc_IndentationError; + msg = "unindent does not match any outer indentation level"; + break; + case E_TOODEEP: + errtype = PyExc_IndentationError; + msg = "too many levels of indentation"; + break; + case E_DECODE: { + PyObject *type, *value, *tb; + PyErr_Fetch(&type, &value, &tb); + if (value != NULL) { + u = PyObject_Str(value); + if (u != NULL) { + msg = PyString_AsString(u); + } + } + if (msg == NULL) + msg = "unknown decode error"; + Py_XDECREF(type); + Py_XDECREF(value); + Py_XDECREF(tb); + break; + } + case E_LINECONT: + msg = "unexpected character after line continuation character"; + break; + default: + fprintf(stderr, "error=%d\n", err->error); + msg = "unknown parsing error"; + break; + } + v = Py_BuildValue("(ziiz)", err->filename, + err->lineno, err->offset, err->text); + w = NULL; + if (v != NULL) + w = Py_BuildValue("(sO)", msg, v); + Py_XDECREF(u); + Py_XDECREF(v); + PyErr_SetObject(errtype, w); + Py_XDECREF(w); +cleanup: + if (err->text != NULL) { + PyObject_FREE(err->text); + err->text = NULL; + } +} + +/* Print fatal error message and abort */ + +void +Py_FatalError(const char *msg) +{ + fprintf(stderr, "Fatal Python error: %s\n", msg); +#ifdef MS_WINDOWS + OutputDebugString("Fatal Python error: "); + OutputDebugString(msg); + OutputDebugString("\n"); +#ifdef _DEBUG + DebugBreak(); +#endif +#endif /* MS_WINDOWS */ + abort(); +} + +/* Clean up and exit */ + +#ifdef WITH_THREAD +#include "pythread.h" +#endif + +#define NEXITFUNCS 32 +static void (*exitfuncs[NEXITFUNCS])(void); +static int nexitfuncs = 0; + +int Py_AtExit(void (*func)(void)) +{ + if (nexitfuncs >= NEXITFUNCS) + return -1; + exitfuncs[nexitfuncs++] = func; + return 0; +} + +static void +call_sys_exitfunc(void) +{ + PyObject *exitfunc = PySys_GetObject("exitfunc"); + + if (exitfunc) { + PyObject *res; + Py_INCREF(exitfunc); + PySys_SetObject("exitfunc", (PyObject *)NULL); + res = PyEval_CallObject(exitfunc, (PyObject *)NULL); + if (res == NULL) { + if (!PyErr_ExceptionMatches(PyExc_SystemExit)) { + PySys_WriteStderr("Error in sys.exitfunc:\n"); + } + PyErr_Print(); + } + Py_DECREF(exitfunc); + } + + if (Py_FlushLine()) + PyErr_Clear(); +} + +static void +call_ll_exitfuncs(void) +{ + while (nexitfuncs > 0) + (*exitfuncs[--nexitfuncs])(); + + fflush(stdout); + fflush(stderr); +} + +void +Py_Exit(int sts) +{ + Py_Finalize(); + + exit(sts); +} + +static void +initsigs(void) +{ +#ifdef SIGPIPE + PyOS_setsig(SIGPIPE, SIG_IGN); +#endif +#ifdef SIGXFZ + PyOS_setsig(SIGXFZ, SIG_IGN); +#endif +#ifdef SIGXFSZ + PyOS_setsig(SIGXFSZ, SIG_IGN); +#endif + PyOS_InitInterrupts(); /* May imply initsignal() */ +} + + +/* + * The file descriptor fd is considered ``interactive'' if either + * a) isatty(fd) is TRUE, or + * b) the -i flag was given, and the filename associated with + * the descriptor is NULL or "" or "???". + */ +int +Py_FdIsInteractive(FILE *fp, const char *filename) +{ + if (isatty((int)fileno(fp))) + return 1; + if (!Py_InteractiveFlag) + return 0; + return (filename == NULL) || + (strcmp(filename, "") == 0) || + (strcmp(filename, "???") == 0); +} + + +#if defined(USE_STACKCHECK) +#if defined(WIN32) && defined(_MSC_VER) + +/* Stack checking for Microsoft C */ + +#include +#include + +/* + * Return non-zero when we run out of memory on the stack; zero otherwise. + */ +int +PyOS_CheckStack(void) +{ + __try { + /* alloca throws a stack overflow exception if there's + not enough space left on the stack */ + alloca(PYOS_STACK_MARGIN * sizeof(void*)); + return 0; + } __except (GetExceptionCode() == STATUS_STACK_OVERFLOW ? + EXCEPTION_EXECUTE_HANDLER : + EXCEPTION_CONTINUE_SEARCH) { + int errcode = _resetstkoflw(); + if (errcode == 0) + { + Py_FatalError("Could not reset the stack!"); + } + } + return 1; +} + +#endif /* WIN32 && _MSC_VER */ + +/* Alternate implementations can be added here... */ + +#endif /* USE_STACKCHECK */ + + +/* Wrappers around sigaction() or signal(). */ + +PyOS_sighandler_t +PyOS_getsig(int sig) +{ +#ifdef HAVE_SIGACTION + struct sigaction context; + if (sigaction(sig, NULL, &context) == -1) + return SIG_ERR; + return context.sa_handler; +#else + PyOS_sighandler_t handler; +/* Special signal handling for the secure CRT in Visual Studio 2005 */ +#if defined(_MSC_VER) && _MSC_VER >= 1400 + switch (sig) { + /* Only these signals are valid */ + case SIGINT: + case SIGILL: + case SIGFPE: + case SIGSEGV: + case SIGTERM: + case SIGBREAK: + case SIGABRT: + break; + /* Don't call signal() with other values or it will assert */ + default: + return SIG_ERR; + } +#endif /* _MSC_VER && _MSC_VER >= 1400 */ + handler = signal(sig, SIG_IGN); + if (handler != SIG_ERR) + signal(sig, handler); + return handler; +#endif +} + +PyOS_sighandler_t +PyOS_setsig(int sig, PyOS_sighandler_t handler) +{ +#ifdef HAVE_SIGACTION + struct sigaction context, ocontext; + context.sa_handler = handler; + sigemptyset(&context.sa_mask); + context.sa_flags = 0; + if (sigaction(sig, &context, &ocontext) == -1) + return SIG_ERR; + return ocontext.sa_handler; +#else + PyOS_sighandler_t oldhandler; + oldhandler = signal(sig, handler); +#ifdef HAVE_SIGINTERRUPT + siginterrupt(sig, 1); +#endif + return oldhandler; +#endif +} + +/* Deprecated C API functions still provided for binary compatiblity */ + +#undef PyParser_SimpleParseFile +PyAPI_FUNC(node *) +PyParser_SimpleParseFile(FILE *fp, const char *filename, int start) +{ + return PyParser_SimpleParseFileFlags(fp, filename, start, 0); +} + +#undef PyParser_SimpleParseString +PyAPI_FUNC(node *) +PyParser_SimpleParseString(const char *str, int start) +{ + return PyParser_SimpleParseStringFlags(str, start, 0); +} + +#undef PyRun_AnyFile +PyAPI_FUNC(int) +PyRun_AnyFile(FILE *fp, const char *name) +{ + return PyRun_AnyFileExFlags(fp, name, 0, NULL); +} + +#undef PyRun_AnyFileEx +PyAPI_FUNC(int) +PyRun_AnyFileEx(FILE *fp, const char *name, int closeit) +{ + return PyRun_AnyFileExFlags(fp, name, closeit, NULL); +} + +#undef PyRun_AnyFileFlags +PyAPI_FUNC(int) +PyRun_AnyFileFlags(FILE *fp, const char *name, PyCompilerFlags *flags) +{ + return PyRun_AnyFileExFlags(fp, name, 0, flags); +} + +#undef PyRun_File +PyAPI_FUNC(PyObject *) +PyRun_File(FILE *fp, const char *p, int s, PyObject *g, PyObject *l) +{ + return PyRun_FileExFlags(fp, p, s, g, l, 0, NULL); +} + +#undef PyRun_FileEx +PyAPI_FUNC(PyObject *) +PyRun_FileEx(FILE *fp, const char *p, int s, PyObject *g, PyObject *l, int c) +{ + return PyRun_FileExFlags(fp, p, s, g, l, c, NULL); +} + +#undef PyRun_FileFlags +PyAPI_FUNC(PyObject *) +PyRun_FileFlags(FILE *fp, const char *p, int s, PyObject *g, PyObject *l, + PyCompilerFlags *flags) +{ + return PyRun_FileExFlags(fp, p, s, g, l, 0, flags); +} + +#undef PyRun_SimpleFile +PyAPI_FUNC(int) +PyRun_SimpleFile(FILE *f, const char *p) +{ + return PyRun_SimpleFileExFlags(f, p, 0, NULL); +} + +#undef PyRun_SimpleFileEx +PyAPI_FUNC(int) +PyRun_SimpleFileEx(FILE *f, const char *p, int c) +{ + return PyRun_SimpleFileExFlags(f, p, c, NULL); +} + + +#undef PyRun_String +PyAPI_FUNC(PyObject *) +PyRun_String(const char *str, int s, PyObject *g, PyObject *l) +{ + return PyRun_StringFlags(str, s, g, l, NULL); +} + +#undef PyRun_SimpleString +PyAPI_FUNC(int) +PyRun_SimpleString(const char *s) +{ + return PyRun_SimpleStringFlags(s, NULL); +} + +#undef Py_CompileString +PyAPI_FUNC(PyObject *) +Py_CompileString(const char *str, const char *p, int s) +{ + return Py_CompileStringFlags(str, p, s, NULL); +} + +#undef PyRun_InteractiveOne +PyAPI_FUNC(int) +PyRun_InteractiveOne(FILE *f, const char *p) +{ + return PyRun_InteractiveOneFlags(f, p, NULL); +} + +#undef PyRun_InteractiveLoop +PyAPI_FUNC(int) +PyRun_InteractiveLoop(FILE *f, const char *p) +{ + return PyRun_InteractiveLoopFlags(f, p, NULL); +} + +#ifdef __cplusplus +} +#endif +