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-
- /* Python interpreter top-level routines, including init/exit */
-
- #include "Python.h"
-
- #include "grammar.h"
- #include "node.h"
- #include "token.h"
- #include "parsetok.h"
- #include "errcode.h"
- #include "compile.h"
- #include "eval.h"
- #include "marshal.h"
-
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
-
- #ifdef HAVE_SIGNAL_H
- #include <signal.h>
- #endif
-
- #ifdef MS_WIN32
- #undef BYTE
- #include "windows.h"
- #endif
-
- #ifdef macintosh
- #include "macglue.h"
- #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_err_node(node *n, char *filename,
- PyObject *globals, PyObject *locals);
- static PyObject *run_node(node *n, char *filename,
- PyObject *globals, PyObject *locals);
- static PyObject *run_pyc_file(FILE *fp, char *filename,
- PyObject *globals, PyObject *locals);
- static void err_input(perrdetail *);
- static void initsigs(void);
- static void call_sys_exitfunc(void);
- static void call_ll_exitfuncs(void);
-
- #ifdef Py_TRACE_REFS
- int _Py_AskYesNo(char *prompt);
- #endif
-
- extern void _PyUnicode_Init(void);
- extern void _PyUnicode_Fini(void);
- extern void _PyCodecRegistry_Init(void);
- extern void _PyCodecRegistry_Fini(void);
-
-
- int Py_DebugFlag; /* Needed by parser.c */
- int Py_VerboseFlag; /* Needed by import.c */
- int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
- int Py_NoSiteFlag; /* Suppress 'import site' */
- int Py_UseClassExceptionsFlag = 1; /* Needed by bltinmodule.c: deprecated */
- int Py_FrozenFlag; /* Needed by getpath.c */
- int Py_UnicodeFlag = 0; /* Needed by compile.c */
-
- 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.)
-
- */
-
- void
- Py_Initialize(void)
- {
- PyInterpreterState *interp;
- PyThreadState *tstate;
- PyObject *bimod, *sysmod;
- char *p;
-
- if (initialized)
- return;
- initialized = 1;
-
- if ((p = getenv("PYTHONDEBUG")) && *p != '\0')
- Py_DebugFlag = Py_DebugFlag ? Py_DebugFlag : 1;
- if ((p = getenv("PYTHONVERBOSE")) && *p != '\0')
- Py_VerboseFlag = Py_VerboseFlag ? Py_VerboseFlag : 1;
- if ((p = getenv("PYTHONOPTIMIZE")) && *p != '\0')
- Py_OptimizeFlag = Py_OptimizeFlag ? Py_OptimizeFlag : 1;
-
- 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);
-
- interp->modules = PyDict_New();
- if (interp->modules == NULL)
- Py_FatalError("Py_Initialize: can't make modules dictionary");
-
- /* Init codec registry */
- _PyCodecRegistry_Init();
-
- /* Init Unicode implementation; relies on the codec registry */
- _PyUnicode_Init();
-
- _PyCompareState_Key = PyString_InternFromString("cmp_state");
-
- bimod = _PyBuiltin_Init();
- if (bimod == NULL)
- Py_FatalError("Py_Initialize: can't initialize __builtin__");
- interp->builtins = PyModule_GetDict(bimod);
- Py_INCREF(interp->builtins);
-
- sysmod = _PySys_Init();
- if (sysmod == NULL)
- Py_FatalError("Py_Initialize: can't initialize sys");
- interp->sysdict = PyModule_GetDict(sysmod);
- Py_INCREF(interp->sysdict);
- _PyImport_FixupExtension("sys", "sys");
- PySys_SetPath(Py_GetPath());
- PyDict_SetItemString(interp->sysdict, "modules",
- interp->modules);
-
- _PyImport_Init();
-
- /* initialize builtin exceptions */
- init_exceptions();
-
- /* phase 2 of builtins */
- _PyImport_FixupExtension("__builtin__", "__builtin__");
-
- initsigs(); /* Signal handling stuff, including initintr() */
-
- initmain(); /* Module __main__ */
- if (!Py_NoSiteFlag)
- initsite(); /* Module site */
- }
-
- #ifdef COUNT_ALLOCS
- extern void dump_counts(void);
- #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;
- initialized = 0;
-
- call_sys_exitfunc();
-
- /* Get current thread state and interpreter pointer */
- tstate = PyThreadState_Get();
- interp = tstate->interp;
-
- /* Disable signal handling */
- PyOS_FiniInterrupts();
-
- /* Cleanup Unicode implementation */
- _PyUnicode_Fini();
-
- /* Cleanup Codec registry */
- _PyCodecRegistry_Fini();
-
- /* Destroy all modules */
- PyImport_Cleanup();
-
- /* Destroy the database used by _PyImport_{Fixup,Find}Extension */
- _PyImport_Fini();
-
- /* Debugging stuff */
- #ifdef COUNT_ALLOCS
- dump_counts();
- #endif
-
- #ifdef Py_REF_DEBUG
- fprintf(stderr, "[%ld refs]\n", _Py_RefTotal);
- #endif
-
- #ifdef Py_TRACE_REFS
- if (
- #ifdef MS_WINDOWS /* Only ask on Windows if env var set */
- getenv("PYTHONDUMPREFS") &&
- #endif /* MS_WINDOWS */
- _Py_AskYesNo("Print left references?")) {
- _Py_PrintReferences(stderr);
- }
- #endif /* Py_TRACE_REFS */
-
- /* 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.
- */
- fini_exceptions();
-
- /* Delete current thread */
- PyInterpreterState_Clear(interp);
- PyThreadState_Swap(NULL);
- PyInterpreterState_Delete(interp);
-
- PyMethod_Fini();
- PyFrame_Fini();
- PyCFunction_Fini();
- PyTuple_Fini();
- PyString_Fini();
- PyInt_Fini();
- PyFloat_Fini();
-
- /* 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);
-
- call_ll_exitfuncs();
-
- #ifdef Py_TRACE_REFS
- _Py_ResetReferences();
- #endif /* Py_TRACE_REFS */
- }
-
- /* 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();
-
- bimod = _PyImport_FindExtension("__builtin__", "__builtin__");
- if (bimod != NULL) {
- interp->builtins = PyModule_GetDict(bimod);
- Py_INCREF(interp->builtins);
- }
- sysmod = _PyImport_FindExtension("sys", "sys");
- if (bimod != NULL && sysmod != NULL) {
- interp->sysdict = PyModule_GetDict(sysmod);
- Py_INCREF(interp->sysdict);
- PySys_SetPath(Py_GetPath());
- PyDict_SetItemString(interp->sysdict, "modules",
- interp->modules);
- initmain();
- if (!Py_NoSiteFlag)
- initsite();
- }
-
- if (!PyErr_Occurred())
- return tstate;
-
- /* 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)
- home = 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_AnyFile(FILE *fp, char *filename)
- {
- return PyRun_AnyFileEx(fp, filename, 0);
- }
-
- int
- PyRun_AnyFileEx(FILE *fp, char *filename, int closeit)
- {
- if (filename == NULL)
- filename = "???";
- if (Py_FdIsInteractive(fp, filename)) {
- int err = PyRun_InteractiveLoop(fp, filename);
- if (closeit)
- fclose(fp);
- return err;
- }
- else
- return PyRun_SimpleFileEx(fp, filename, closeit);
- }
-
- int
- PyRun_InteractiveLoop(FILE *fp, char *filename)
- {
- PyObject *v;
- int ret;
- 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_InteractiveOne(fp, filename);
- #ifdef Py_REF_DEBUG
- fprintf(stderr, "[%ld refs]\n", _Py_RefTotal);
- #endif
- if (ret == E_EOF)
- return 0;
- /*
- if (ret == E_NOMEM)
- return -1;
- */
- }
- }
-
- int
- PyRun_InteractiveOne(FILE *fp, char *filename)
- {
- PyObject *m, *d, *v, *w;
- node *n;
- perrdetail err;
- char *ps1 = "", *ps2 = "";
- 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);
- }
- n = PyParser_ParseFile(fp, filename, &_PyParser_Grammar,
- Py_single_input, ps1, ps2, &err);
- Py_XDECREF(v);
- Py_XDECREF(w);
- if (n == NULL) {
- if (err.error == E_EOF) {
- if (err.text)
- PyMem_DEL(err.text);
- return E_EOF;
- }
- err_input(&err);
- PyErr_Print();
- return err.error;
- }
- m = PyImport_AddModule("__main__");
- if (m == NULL)
- return -1;
- d = PyModule_GetDict(m);
- v = run_node(n, filename, d, d);
- if (v == NULL) {
- PyErr_Print();
- return -1;
- }
- Py_DECREF(v);
- if (Py_FlushLine())
- PyErr_Clear();
- return 0;
- }
-
- int
- PyRun_SimpleFile(FILE *fp, char *filename)
- {
- return PyRun_SimpleFileEx(fp, filename, 0);
- }
-
- int
- PyRun_SimpleFileEx(FILE *fp, char *filename, int closeit)
- {
- PyObject *m, *d, *v;
- char *ext;
-
- m = PyImport_AddModule("__main__");
- if (m == NULL)
- return -1;
- d = PyModule_GetDict(m);
- ext = filename + strlen(filename) - 4;
- #ifdef _AMIGA
- /* on Amiga, filenames are case insensitive */
- if (stricmp(ext, ".pyc") == 0 || stricmp(ext, ".pyo") == 0
- #else
- if (strcmp(ext, ".pyc") == 0 || strcmp(ext, ".pyo") == 0
- #endif /* _AMIGA */
- #ifdef macintosh
- /* On a mac, we also assume a pyc file for types 'PYC ' and 'APPL' */
- || PyMac_getfiletype(filename) == 'PYC '
- || PyMac_getfiletype(filename) == 'APPL'
- #endif /* macintosh */
- ) {
- /* 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");
- return -1;
- }
- /* 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);
- } else {
- v = PyRun_FileEx(fp, filename, Py_file_input, d, d, closeit);
- }
- if (v == NULL) {
- PyErr_Print();
- return -1;
- }
- Py_DECREF(v);
- if (Py_FlushLine())
- PyErr_Clear();
- return 0;
- }
-
- int
- PyRun_SimpleString(char *command)
- {
- PyObject *m, *d, *v;
- m = PyImport_AddModule("__main__");
- if (m == NULL)
- return -1;
- d = PyModule_GetDict(m);
- v = PyRun_String(command, Py_file_input, d, d);
- 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, char **filename,
- int *lineno, int *offset, char **text)
- {
- long hold;
- PyObject *v;
-
- /* old style errors */
- if (PyTuple_Check(err))
- return PyArg_Parse(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;
- 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);
- }
-
- void
- PyErr_PrintEx(int set_sys_last_vars)
- {
- int err = 0;
- PyObject *exception, *v, *tb, *f;
- PyErr_Fetch(&exception, &v, &tb);
- PyErr_NormalizeException(&exception, &v, &tb);
-
- if (exception == NULL)
- return;
-
- if (PyErr_GivenExceptionMatches(exception, PyExc_SystemExit)) {
- if (Py_FlushLine())
- PyErr_Clear();
- fflush(stdout);
- if (v == NULL || v == Py_None)
- Py_Exit(0);
- if (PyInstance_Check(v)) {
- /* we expect the error code to be store in the
- `code' attribute
- */
- PyObject *code = PyObject_GetAttrString(v, "code");
- if (code) {
- Py_DECREF(v);
- v = code;
- if (v == Py_None)
- Py_Exit(0);
- }
- /* if we failed to dig out the "code" attribute,
- then just let the else clause below print the
- error
- */
- }
- if (PyInt_Check(v))
- Py_Exit((int)PyInt_AsLong(v));
- else {
- /* OK to use real stderr here */
- PyObject_Print(v, stderr, Py_PRINT_RAW);
- fprintf(stderr, "\n");
- Py_Exit(1);
- }
- }
- if (set_sys_last_vars) {
- PySys_SetObject("last_type", exception);
- PySys_SetObject("last_value", v);
- PySys_SetObject("last_traceback", tb);
- }
- f = PySys_GetObject("stderr");
- if (f == NULL)
- fprintf(stderr, "lost sys.stderr\n");
- else {
- if (Py_FlushLine())
- PyErr_Clear();
- fflush(stdout);
- err = PyTraceBack_Print(tb, f);
- if (err == 0 &&
- PyErr_GivenExceptionMatches(exception, PyExc_SyntaxError))
- {
- PyObject *message;
- char *filename, *text;
- int lineno, offset;
- if (!parse_syntax_error(v, &message, &filename,
- &lineno, &offset, &text))
- PyErr_Clear();
- else {
- char buf[10];
- PyFile_WriteString(" File \"", f);
- if (filename == NULL)
- PyFile_WriteString("<string>", f);
- else
- PyFile_WriteString(filename, f);
- PyFile_WriteString("\", line ", f);
- sprintf(buf, "%d", lineno);
- PyFile_WriteString(buf, f);
- PyFile_WriteString("\n", f);
- if (text != NULL) {
- char *nl;
- if (offset > 0 &&
- offset == (int)strlen(text))
- offset--;
- for (;;) {
- nl = strchr(text, '\n');
- if (nl == NULL ||
- nl-text >= offset)
- break;
- offset -= (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);
- PyFile_WriteString(" ", f);
- offset--;
- while (offset > 0) {
- PyFile_WriteString(" ", f);
- offset--;
- }
- PyFile_WriteString("^\n", f);
- }
- Py_INCREF(message);
- Py_DECREF(v);
- v = 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 (PyClass_Check(exception)) {
- PyClassObject* exc = (PyClassObject*)exception;
- PyObject* className = exc->cl_name;
- PyObject* moduleName =
- PyDict_GetItemString(exc->cl_dict, "__module__");
-
- if (moduleName == NULL)
- err = PyFile_WriteString("<unknown>", f);
- else {
- char* modstr = PyString_AsString(moduleName);
- if (modstr && strcmp(modstr, "exceptions"))
- {
- err = PyFile_WriteString(modstr, f);
- err += PyFile_WriteString(".", f);
- }
- }
- if (err == 0) {
- if (className == NULL)
- err = PyFile_WriteString("<unknown>", f);
- else
- err = PyFile_WriteObject(className, f,
- Py_PRINT_RAW);
- }
- }
- else
- err = PyFile_WriteObject(exception, f, Py_PRINT_RAW);
- if (err == 0) {
- if (v != NULL && v != Py_None) {
- PyObject *s = PyObject_Str(v);
- /* 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);
- }
- }
- if (err == 0)
- err = PyFile_WriteString("\n", f);
- }
- Py_XDECREF(exception);
- Py_XDECREF(v);
- Py_XDECREF(tb);
- /* 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_String(char *str, int start, PyObject *globals, PyObject *locals)
- {
- return run_err_node(PyParser_SimpleParseString(str, start),
- "<string>", globals, locals);
- }
-
- PyObject *
- PyRun_File(FILE *fp, char *filename, int start, PyObject *globals,
- PyObject *locals)
- {
- return PyRun_FileEx(fp, filename, start, globals, locals, 0);
- }
-
- PyObject *
- PyRun_FileEx(FILE *fp, char *filename, int start, PyObject *globals,
- PyObject *locals, int closeit)
- {
- node *n = PyParser_SimpleParseFile(fp, filename, start);
- if (closeit)
- fclose(fp);
- return run_err_node(n, filename, globals, locals);
- }
-
- static PyObject *
- run_err_node(node *n, char *filename, PyObject *globals, PyObject *locals)
- {
- if (n == NULL)
- return NULL;
- return run_node(n, filename, globals, locals);
- }
-
- static PyObject *
- run_node(node *n, char *filename, PyObject *globals, PyObject *locals)
- {
- PyCodeObject *co;
- PyObject *v;
- co = PyNode_Compile(n, filename);
- PyNode_Free(n);
- if (co == NULL)
- return NULL;
- v = PyEval_EvalCode(co, globals, locals);
- Py_DECREF(co);
- return v;
- }
-
- static PyObject *
- run_pyc_file(FILE *fp, char *filename, PyObject *globals, PyObject *locals)
- {
- 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_ReadObjectFromFile(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);
- Py_DECREF(co);
- return v;
- }
-
- PyObject *
- Py_CompileString(char *str, char *filename, int start)
- {
- node *n;
- PyCodeObject *co;
- n = PyParser_SimpleParseString(str, start);
- if (n == NULL)
- return NULL;
- co = PyNode_Compile(n, filename);
- PyNode_Free(n);
- return (PyObject *)co;
- }
-
- /* Simplified interface to parsefile -- return node or set exception */
-
- node *
- PyParser_SimpleParseFile(FILE *fp, char *filename, int start)
- {
- node *n;
- perrdetail err;
- n = PyParser_ParseFile(fp, filename, &_PyParser_Grammar, start,
- (char *)0, (char *)0, &err);
- if (n == NULL)
- err_input(&err);
- return n;
- }
-
- /* Simplified interface to parsestring -- return node or set exception */
-
- node *
- PyParser_SimpleParseString(char *str, int start)
- {
- node *n;
- perrdetail err;
- n = PyParser_ParseString(str, &_PyParser_Grammar, start, &err);
- if (n == NULL)
- err_input(&err);
- return n;
- }
-
- /* Set the error appropriate to the given input error code (see errcode.h) */
-
- static void
- err_input(perrdetail *err)
- {
- PyObject *v, *w, *errtype;
- char *msg = NULL;
- errtype = PyExc_SyntaxError;
- v = Py_BuildValue("(ziiz)", err->filename,
- err->lineno, err->offset, err->text);
- if (err->text != NULL) {
- PyMem_DEL(err->text);
- err->text = NULL;
- }
- 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_INTR:
- PyErr_SetNone(PyExc_KeyboardInterrupt);
- Py_XDECREF(v);
- return;
- case E_NOMEM:
- PyErr_NoMemory();
- Py_XDECREF(v);
- return;
- 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;
- default:
- fprintf(stderr, "error=%d\n", err->error);
- msg = "unknown parsing error";
- break;
- }
- w = Py_BuildValue("(sO)", msg, v);
- PyErr_SetObject(errtype, w);
- Py_XDECREF(w);
-
- if (v != NULL) {
- PyObject *exc, *tb;
-
- PyErr_Fetch(&errtype, &exc, &tb);
- PyErr_NormalizeException(&errtype, &exc, &tb);
- if (PyObject_SetAttrString(exc, "filename",
- PyTuple_GET_ITEM(v, 0)))
- PyErr_Clear();
- if (PyObject_SetAttrString(exc, "lineno",
- PyTuple_GET_ITEM(v, 1)))
- PyErr_Clear();
- if (PyObject_SetAttrString(exc, "offset",
- PyTuple_GET_ITEM(v, 2)))
- PyErr_Clear();
- Py_DECREF(v);
- PyErr_Restore(errtype, exc, tb);
- }
- }
-
- /* Print fatal error message and abort */
-
- void
- Py_FatalError(char *msg)
- {
- fprintf(stderr, "Fatal Python error: %s\n", msg);
- #ifdef macintosh
- for (;;);
- #endif
- #ifdef MS_WIN32
- OutputDebugString("Fatal Python error: ");
- OutputDebugString(msg);
- OutputDebugString("\n");
- #ifdef _DEBUG
- DebugBreak();
- #endif
- #endif /* MS_WIN32 */
- abort();
- }
-
- /* Clean up and exit */
-
- #ifdef WITH_THREAD
- #include "pythread.h"
- int _PyThread_Started = 0; /* Set by threadmodule.c and maybe others */
- #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, *f;
- Py_INCREF(exitfunc);
- PySys_SetObject("exitfunc", (PyObject *)NULL);
- f = PySys_GetObject("stderr");
- res = PyEval_CallObject(exitfunc, (PyObject *)NULL);
- if (res == NULL) {
- if (f)
- PyFile_WriteString("Error in sys.exitfunc:\n", f);
- 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();
-
- #ifdef macintosh
- PyMac_Exit(sts);
- #else
- exit(sts);
- #endif
- }
-
- static void
- initsigs(void)
- {
- #ifdef HAVE_SIGNAL_H
- #ifdef SIGPIPE
- signal(SIGPIPE, SIG_IGN);
- #endif
- #endif /* HAVE_SIGNAL_H */
- PyOS_InitInterrupts(); /* May imply initsignal() */
- }
-
- #ifdef Py_TRACE_REFS
- /* Ask a yes/no question */
-
- int
- _Py_AskYesNo(char *prompt)
- {
- char buf[256];
-
- printf("%s [ny] ", prompt);
- if (fgets(buf, sizeof buf, stdin) == NULL)
- return 0;
- return buf[0] == 'y' || buf[0] == 'Y';
- }
- #endif
-
- #ifdef MPW
-
- /* Check for file descriptor connected to interactive device.
- Pretend that stdin is always interactive, other files never. */
-
- int
- isatty(int fd)
- {
- return fd == fileno(stdin);
- }
-
- #endif
-
- /*
- * 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 "<stdin>" or "???".
- */
- int
- Py_FdIsInteractive(FILE *fp, char *filename)
- {
- if (isatty((int)fileno(fp)))
- return 1;
- if (!Py_InteractiveFlag)
- return 0;
- return (filename == NULL) ||
- (strcmp(filename, "<stdin>") == 0) ||
- (strcmp(filename, "???") == 0);
- }
-
-
- #if defined(USE_STACKCHECK)
- #if defined(WIN32) && defined(_MSC_VER)
-
- /* Stack checking for Microsoft C */
-
- #include <malloc.h>
- #include <excpt.h>
-
- /*
- * 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 (EXCEPTION_EXECUTE_HANDLER) {
- /* just ignore all errors */
- }
- 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;
- sigaction(sig, NULL, &context);
- return context.sa_handler;
- #else
- PyOS_sighandler_t handler;
- handler = signal(sig, SIG_IGN);
- signal(sig, handler);
- return handler;
- #endif
- }
-
- PyOS_sighandler_t
- PyOS_setsig(int sig, PyOS_sighandler_t handler)
- {
- #ifdef HAVE_SIGACTION
- struct sigaction context;
- PyOS_sighandler_t oldhandler;
- sigaction(sig, NULL, &context);
- oldhandler = context.sa_handler;
- context.sa_handler = handler;
- sigaction(sig, &context, NULL);
- return oldhandler;
- #else
- return signal(sig, handler);
- #endif
- }
-