| |
| /* Error handling */ |
| |
| #include "Python.h" |
| |
| #ifndef __STDC__ |
| #ifndef MS_WINDOWS |
| extern char *strerror(int); |
| #endif |
| #endif |
| |
| #ifdef MS_WINDOWS |
| #include "windows.h" |
| #include "winbase.h" |
| #endif |
| |
| #include <ctype.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| |
| void |
| PyErr_Restore(PyObject *type, PyObject *value, PyObject *traceback) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| PyObject *oldtype, *oldvalue, *oldtraceback; |
| |
| if (traceback != NULL && !PyTraceBack_Check(traceback)) { |
| /* XXX Should never happen -- fatal error instead? */ |
| /* Well, it could be None. */ |
| Py_DECREF(traceback); |
| traceback = NULL; |
| } |
| |
| /* Save these in locals to safeguard against recursive |
| invocation through Py_XDECREF */ |
| oldtype = tstate->curexc_type; |
| oldvalue = tstate->curexc_value; |
| oldtraceback = tstate->curexc_traceback; |
| |
| tstate->curexc_type = type; |
| tstate->curexc_value = value; |
| tstate->curexc_traceback = traceback; |
| |
| Py_XDECREF(oldtype); |
| Py_XDECREF(oldvalue); |
| Py_XDECREF(oldtraceback); |
| } |
| |
| void |
| PyErr_SetObject(PyObject *exception, PyObject *value) |
| { |
| if (exception != NULL && |
| !PyExceptionClass_Check(exception)) { |
| PyObject *excstr = PyObject_Repr(exception); |
| PyErr_Format(PyExc_SystemError, |
| "exception %s not a BaseException subclass", |
| PyString_AS_STRING(excstr)); |
| Py_DECREF(excstr); |
| return; |
| } |
| Py_XINCREF(exception); |
| Py_XINCREF(value); |
| PyErr_Restore(exception, value, (PyObject *)NULL); |
| } |
| |
| void |
| PyErr_SetNone(PyObject *exception) |
| { |
| PyErr_SetObject(exception, (PyObject *)NULL); |
| } |
| |
| void |
| PyErr_SetString(PyObject *exception, const char *string) |
| { |
| PyObject *value = PyString_FromString(string); |
| PyErr_SetObject(exception, value); |
| Py_XDECREF(value); |
| } |
| |
| |
| PyObject * |
| PyErr_Occurred(void) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| |
| return tstate->curexc_type; |
| } |
| |
| |
| int |
| PyErr_GivenExceptionMatches(PyObject *err, PyObject *exc) |
| { |
| if (err == NULL || exc == NULL) { |
| /* maybe caused by "import exceptions" that failed early on */ |
| return 0; |
| } |
| if (PyTuple_Check(exc)) { |
| Py_ssize_t i, n; |
| n = PyTuple_Size(exc); |
| for (i = 0; i < n; i++) { |
| /* Test recursively */ |
| if (PyErr_GivenExceptionMatches( |
| err, PyTuple_GET_ITEM(exc, i))) |
| { |
| return 1; |
| } |
| } |
| return 0; |
| } |
| /* err might be an instance, so check its class. */ |
| if (PyExceptionInstance_Check(err)) |
| err = PyExceptionInstance_Class(err); |
| |
| if (PyExceptionClass_Check(err) && PyExceptionClass_Check(exc)) { |
| /* problems here!? not sure PyObject_IsSubclass expects to |
| be called with an exception pending... */ |
| return PyObject_IsSubclass(err, exc); |
| } |
| |
| return err == exc; |
| } |
| |
| |
| int |
| PyErr_ExceptionMatches(PyObject *exc) |
| { |
| return PyErr_GivenExceptionMatches(PyErr_Occurred(), exc); |
| } |
| |
| |
| /* Used in many places to normalize a raised exception, including in |
| eval_code2(), do_raise(), and PyErr_Print() |
| */ |
| void |
| PyErr_NormalizeException(PyObject **exc, PyObject **val, PyObject **tb) |
| { |
| PyObject *type = *exc; |
| PyObject *value = *val; |
| PyObject *inclass = NULL; |
| PyObject *initial_tb = NULL; |
| |
| if (type == NULL) { |
| /* There was no exception, so nothing to do. */ |
| return; |
| } |
| |
| /* If PyErr_SetNone() was used, the value will have been actually |
| set to NULL. |
| */ |
| if (!value) { |
| value = Py_None; |
| Py_INCREF(value); |
| } |
| |
| if (PyExceptionInstance_Check(value)) |
| inclass = PyExceptionInstance_Class(value); |
| |
| /* Normalize the exception so that if the type is a class, the |
| value will be an instance. |
| */ |
| if (PyExceptionClass_Check(type)) { |
| /* if the value was not an instance, or is not an instance |
| whose class is (or is derived from) type, then use the |
| value as an argument to instantiation of the type |
| class. |
| */ |
| if (!inclass || !PyObject_IsSubclass(inclass, type)) { |
| PyObject *args, *res; |
| |
| if (value == Py_None) |
| args = PyTuple_New(0); |
| else if (PyTuple_Check(value)) { |
| Py_INCREF(value); |
| args = value; |
| } |
| else |
| args = PyTuple_Pack(1, value); |
| |
| if (args == NULL) |
| goto finally; |
| res = PyEval_CallObject(type, args); |
| Py_DECREF(args); |
| if (res == NULL) |
| goto finally; |
| Py_DECREF(value); |
| value = res; |
| } |
| /* if the class of the instance doesn't exactly match the |
| class of the type, believe the instance |
| */ |
| else if (inclass != type) { |
| Py_DECREF(type); |
| type = inclass; |
| Py_INCREF(type); |
| } |
| } |
| *exc = type; |
| *val = value; |
| return; |
| finally: |
| Py_DECREF(type); |
| Py_DECREF(value); |
| /* If the new exception doesn't set a traceback and the old |
| exception had a traceback, use the old traceback for the |
| new exception. It's better than nothing. |
| */ |
| initial_tb = *tb; |
| PyErr_Fetch(exc, val, tb); |
| if (initial_tb != NULL) { |
| if (*tb == NULL) |
| *tb = initial_tb; |
| else |
| Py_DECREF(initial_tb); |
| } |
| /* normalize recursively */ |
| PyErr_NormalizeException(exc, val, tb); |
| } |
| |
| |
| void |
| PyErr_Fetch(PyObject **p_type, PyObject **p_value, PyObject **p_traceback) |
| { |
| PyThreadState *tstate = PyThreadState_GET(); |
| |
| *p_type = tstate->curexc_type; |
| *p_value = tstate->curexc_value; |
| *p_traceback = tstate->curexc_traceback; |
| |
| tstate->curexc_type = NULL; |
| tstate->curexc_value = NULL; |
| tstate->curexc_traceback = NULL; |
| } |
| |
| void |
| PyErr_Clear(void) |
| { |
| PyErr_Restore(NULL, NULL, NULL); |
| } |
| |
| /* Convenience functions to set a type error exception and return 0 */ |
| |
| int |
| PyErr_BadArgument(void) |
| { |
| PyErr_SetString(PyExc_TypeError, |
| "bad argument type for built-in operation"); |
| return 0; |
| } |
| |
| PyObject * |
| PyErr_NoMemory(void) |
| { |
| if (PyErr_ExceptionMatches(PyExc_MemoryError)) |
| /* already current */ |
| return NULL; |
| |
| /* raise the pre-allocated instance if it still exists */ |
| if (PyExc_MemoryErrorInst) |
| PyErr_SetObject(PyExc_MemoryError, PyExc_MemoryErrorInst); |
| else |
| /* this will probably fail since there's no memory and hee, |
| hee, we have to instantiate this class |
| */ |
| PyErr_SetNone(PyExc_MemoryError); |
| |
| return NULL; |
| } |
| |
| PyObject * |
| PyErr_SetFromErrnoWithFilenameObject(PyObject *exc, PyObject *filenameObject) |
| { |
| PyObject *v; |
| char *s; |
| int i = errno; |
| #ifdef PLAN9 |
| char errbuf[ERRMAX]; |
| #endif |
| #ifdef MS_WINDOWS |
| char *s_buf = NULL; |
| char s_small_buf[28]; /* Room for "Windows Error 0xFFFFFFFF" */ |
| #endif |
| #ifdef EINTR |
| if (i == EINTR && PyErr_CheckSignals()) |
| return NULL; |
| #endif |
| #ifdef PLAN9 |
| rerrstr(errbuf, sizeof errbuf); |
| s = errbuf; |
| #else |
| if (i == 0) |
| s = "Error"; /* Sometimes errno didn't get set */ |
| else |
| #ifndef MS_WINDOWS |
| s = strerror(i); |
| #else |
| { |
| /* Note that the Win32 errors do not lineup with the |
| errno error. So if the error is in the MSVC error |
| table, we use it, otherwise we assume it really _is_ |
| a Win32 error code |
| */ |
| if (i > 0 && i < _sys_nerr) { |
| s = _sys_errlist[i]; |
| } |
| else { |
| int len = FormatMessage( |
| FORMAT_MESSAGE_ALLOCATE_BUFFER | |
| FORMAT_MESSAGE_FROM_SYSTEM | |
| FORMAT_MESSAGE_IGNORE_INSERTS, |
| NULL, /* no message source */ |
| i, |
| MAKELANGID(LANG_NEUTRAL, |
| SUBLANG_DEFAULT), |
| /* Default language */ |
| (LPTSTR) &s_buf, |
| 0, /* size not used */ |
| NULL); /* no args */ |
| if (len==0) { |
| /* Only ever seen this in out-of-mem |
| situations */ |
| sprintf(s_small_buf, "Windows Error 0x%X", i); |
| s = s_small_buf; |
| s_buf = NULL; |
| } else { |
| s = s_buf; |
| /* remove trailing cr/lf and dots */ |
| while (len > 0 && (s[len-1] <= ' ' || s[len-1] == '.')) |
| s[--len] = '\0'; |
| } |
| } |
| } |
| #endif /* Unix/Windows */ |
| #endif /* PLAN 9*/ |
| if (filenameObject != NULL) |
| v = Py_BuildValue("(isO)", i, s, filenameObject); |
| else |
| v = Py_BuildValue("(is)", i, s); |
| if (v != NULL) { |
| PyErr_SetObject(exc, v); |
| Py_DECREF(v); |
| } |
| #ifdef MS_WINDOWS |
| LocalFree(s_buf); |
| #endif |
| return NULL; |
| } |
| |
| |
| PyObject * |
| PyErr_SetFromErrnoWithFilename(PyObject *exc, char *filename) |
| { |
| PyObject *name = filename ? PyString_FromString(filename) : NULL; |
| PyObject *result = PyErr_SetFromErrnoWithFilenameObject(exc, name); |
| Py_XDECREF(name); |
| return result; |
| } |
| |
| #ifdef Py_WIN_WIDE_FILENAMES |
| PyObject * |
| PyErr_SetFromErrnoWithUnicodeFilename(PyObject *exc, Py_UNICODE *filename) |
| { |
| PyObject *name = filename ? |
| PyUnicode_FromUnicode(filename, wcslen(filename)) : |
| NULL; |
| PyObject *result = PyErr_SetFromErrnoWithFilenameObject(exc, name); |
| Py_XDECREF(name); |
| return result; |
| } |
| #endif /* Py_WIN_WIDE_FILENAMES */ |
| |
| PyObject * |
| PyErr_SetFromErrno(PyObject *exc) |
| { |
| return PyErr_SetFromErrnoWithFilenameObject(exc, NULL); |
| } |
| |
| #ifdef MS_WINDOWS |
| /* Windows specific error code handling */ |
| PyObject *PyErr_SetExcFromWindowsErrWithFilenameObject( |
| PyObject *exc, |
| int ierr, |
| PyObject *filenameObject) |
| { |
| int len; |
| char *s; |
| char *s_buf = NULL; /* Free via LocalFree */ |
| char s_small_buf[28]; /* Room for "Windows Error 0xFFFFFFFF" */ |
| PyObject *v; |
| DWORD err = (DWORD)ierr; |
| if (err==0) err = GetLastError(); |
| len = FormatMessage( |
| /* Error API error */ |
| FORMAT_MESSAGE_ALLOCATE_BUFFER | |
| FORMAT_MESSAGE_FROM_SYSTEM | |
| FORMAT_MESSAGE_IGNORE_INSERTS, |
| NULL, /* no message source */ |
| err, |
| MAKELANGID(LANG_NEUTRAL, |
| SUBLANG_DEFAULT), /* Default language */ |
| (LPTSTR) &s_buf, |
| 0, /* size not used */ |
| NULL); /* no args */ |
| if (len==0) { |
| /* Only seen this in out of mem situations */ |
| sprintf(s_small_buf, "Windows Error 0x%X", err); |
| s = s_small_buf; |
| s_buf = NULL; |
| } else { |
| s = s_buf; |
| /* remove trailing cr/lf and dots */ |
| while (len > 0 && (s[len-1] <= ' ' || s[len-1] == '.')) |
| s[--len] = '\0'; |
| } |
| if (filenameObject != NULL) |
| v = Py_BuildValue("(isO)", err, s, filenameObject); |
| else |
| v = Py_BuildValue("(is)", err, s); |
| if (v != NULL) { |
| PyErr_SetObject(exc, v); |
| Py_DECREF(v); |
| } |
| LocalFree(s_buf); |
| return NULL; |
| } |
| |
| PyObject *PyErr_SetExcFromWindowsErrWithFilename( |
| PyObject *exc, |
| int ierr, |
| const char *filename) |
| { |
| PyObject *name = filename ? PyString_FromString(filename) : NULL; |
| PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObject(exc, |
| ierr, |
| name); |
| Py_XDECREF(name); |
| return ret; |
| } |
| |
| #ifdef Py_WIN_WIDE_FILENAMES |
| PyObject *PyErr_SetExcFromWindowsErrWithUnicodeFilename( |
| PyObject *exc, |
| int ierr, |
| const Py_UNICODE *filename) |
| { |
| PyObject *name = filename ? |
| PyUnicode_FromUnicode(filename, wcslen(filename)) : |
| NULL; |
| PyObject *ret = PyErr_SetExcFromWindowsErrWithFilenameObject(exc, |
| ierr, |
| name); |
| Py_XDECREF(name); |
| return ret; |
| } |
| #endif /* Py_WIN_WIDE_FILENAMES */ |
| |
| PyObject *PyErr_SetExcFromWindowsErr(PyObject *exc, int ierr) |
| { |
| return PyErr_SetExcFromWindowsErrWithFilename(exc, ierr, NULL); |
| } |
| |
| PyObject *PyErr_SetFromWindowsErr(int ierr) |
| { |
| return PyErr_SetExcFromWindowsErrWithFilename(PyExc_WindowsError, |
| ierr, NULL); |
| } |
| PyObject *PyErr_SetFromWindowsErrWithFilename( |
| int ierr, |
| const char *filename) |
| { |
| PyObject *name = filename ? PyString_FromString(filename) : NULL; |
| PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObject( |
| PyExc_WindowsError, |
| ierr, name); |
| Py_XDECREF(name); |
| return result; |
| } |
| |
| #ifdef Py_WIN_WIDE_FILENAMES |
| PyObject *PyErr_SetFromWindowsErrWithUnicodeFilename( |
| int ierr, |
| const Py_UNICODE *filename) |
| { |
| PyObject *name = filename ? |
| PyUnicode_FromUnicode(filename, wcslen(filename)) : |
| NULL; |
| PyObject *result = PyErr_SetExcFromWindowsErrWithFilenameObject( |
| PyExc_WindowsError, |
| ierr, name); |
| Py_XDECREF(name); |
| return result; |
| } |
| #endif /* Py_WIN_WIDE_FILENAMES */ |
| #endif /* MS_WINDOWS */ |
| |
| void |
| _PyErr_BadInternalCall(char *filename, int lineno) |
| { |
| PyErr_Format(PyExc_SystemError, |
| "%s:%d: bad argument to internal function", |
| filename, lineno); |
| } |
| |
| /* Remove the preprocessor macro for PyErr_BadInternalCall() so that we can |
| export the entry point for existing object code: */ |
| #undef PyErr_BadInternalCall |
| void |
| PyErr_BadInternalCall(void) |
| { |
| PyErr_Format(PyExc_SystemError, |
| "bad argument to internal function"); |
| } |
| #define PyErr_BadInternalCall() _PyErr_BadInternalCall(__FILE__, __LINE__) |
| |
| |
| |
| PyObject * |
| PyErr_Format(PyObject *exception, const char *format, ...) |
| { |
| va_list vargs; |
| PyObject* string; |
| |
| #ifdef HAVE_STDARG_PROTOTYPES |
| va_start(vargs, format); |
| #else |
| va_start(vargs); |
| #endif |
| |
| string = PyString_FromFormatV(format, vargs); |
| PyErr_SetObject(exception, string); |
| Py_XDECREF(string); |
| va_end(vargs); |
| return NULL; |
| } |
| |
| |
| |
| PyObject * |
| PyErr_NewException(char *name, PyObject *base, PyObject *dict) |
| { |
| char *dot; |
| PyObject *modulename = NULL; |
| PyObject *classname = NULL; |
| PyObject *mydict = NULL; |
| PyObject *bases = NULL; |
| PyObject *result = NULL; |
| dot = strrchr(name, '.'); |
| if (dot == NULL) { |
| PyErr_SetString(PyExc_SystemError, |
| "PyErr_NewException: name must be module.class"); |
| return NULL; |
| } |
| if (base == NULL) |
| base = PyExc_Exception; |
| if (dict == NULL) { |
| dict = mydict = PyDict_New(); |
| if (dict == NULL) |
| goto failure; |
| } |
| if (PyDict_GetItemString(dict, "__module__") == NULL) { |
| modulename = PyString_FromStringAndSize(name, |
| (Py_ssize_t)(dot-name)); |
| if (modulename == NULL) |
| goto failure; |
| if (PyDict_SetItemString(dict, "__module__", modulename) != 0) |
| goto failure; |
| } |
| if (PyTuple_Check(base)) { |
| bases = base; |
| /* INCREF as we create a new ref in the else branch */ |
| Py_INCREF(bases); |
| } else { |
| bases = PyTuple_Pack(1, base); |
| if (bases == NULL) |
| goto failure; |
| } |
| /* Create a real new-style class. */ |
| result = PyObject_CallFunction((PyObject *)&PyType_Type, "sOO", |
| dot+1, bases, dict); |
| failure: |
| Py_XDECREF(bases); |
| Py_XDECREF(mydict); |
| Py_XDECREF(classname); |
| Py_XDECREF(modulename); |
| return result; |
| } |
| |
| /* Call when an exception has occurred but there is no way for Python |
| to handle it. Examples: exception in __del__ or during GC. */ |
| void |
| PyErr_WriteUnraisable(PyObject *obj) |
| { |
| PyObject *f, *t, *v, *tb; |
| PyErr_Fetch(&t, &v, &tb); |
| f = PySys_GetObject("stderr"); |
| if (f != NULL) { |
| PyFile_WriteString("Exception ", f); |
| if (t) { |
| PyObject* moduleName; |
| char* className = PyExceptionClass_Name(t); |
| |
| if (className != NULL) { |
| char *dot = strrchr(className, '.'); |
| if (dot != NULL) |
| className = dot+1; |
| } |
| |
| moduleName = PyObject_GetAttrString(t, "__module__"); |
| if (moduleName == NULL) |
| PyFile_WriteString("<unknown>", f); |
| else { |
| char* modstr = PyString_AsString(moduleName); |
| if (modstr) |
| { |
| PyFile_WriteString(modstr, f); |
| PyFile_WriteString(".", f); |
| } |
| } |
| if (className == NULL) |
| PyFile_WriteString("<unknown>", f); |
| else |
| PyFile_WriteString(className, f); |
| if (v && v != Py_None) { |
| PyFile_WriteString(": ", f); |
| PyFile_WriteObject(v, f, 0); |
| } |
| Py_XDECREF(moduleName); |
| } |
| PyFile_WriteString(" in ", f); |
| PyFile_WriteObject(obj, f, 0); |
| PyFile_WriteString(" ignored\n", f); |
| PyErr_Clear(); /* Just in case */ |
| } |
| Py_XDECREF(t); |
| Py_XDECREF(v); |
| Py_XDECREF(tb); |
| } |
| |
| extern PyObject *PyModule_GetWarningsModule(void); |
| |
| /* Function to issue a warning message; may raise an exception. */ |
| int |
| PyErr_WarnEx(PyObject *category, const char *message, Py_ssize_t stack_level) |
| { |
| PyObject *dict, *func = NULL; |
| PyObject *warnings_module = PyModule_GetWarningsModule(); |
| |
| if (warnings_module != NULL) { |
| dict = PyModule_GetDict(warnings_module); |
| func = PyDict_GetItemString(dict, "warn"); |
| } |
| if (func == NULL) { |
| PySys_WriteStderr("warning: %s\n", message); |
| return 0; |
| } |
| else { |
| PyObject *res; |
| |
| if (category == NULL) |
| category = PyExc_RuntimeWarning; |
| res = PyObject_CallFunction(func, "sOn", |
| message, category, stack_level); |
| if (res == NULL) |
| return -1; |
| Py_DECREF(res); |
| return 0; |
| } |
| } |
| |
| /* PyErr_Warn is only for backwards compatability and will be removed. |
| Use PyErr_WarnEx instead. */ |
| |
| #undef PyErr_Warn |
| |
| PyAPI_FUNC(int) |
| PyErr_Warn(PyObject *category, char *message) |
| { |
| return PyErr_WarnEx(category, message, 1); |
| } |
| |
| /* Warning with explicit origin */ |
| int |
| PyErr_WarnExplicit(PyObject *category, const char *message, |
| const char *filename, int lineno, |
| const char *module, PyObject *registry) |
| { |
| PyObject *mod, *dict, *func = NULL; |
| |
| mod = PyImport_ImportModule("warnings"); |
| if (mod != NULL) { |
| dict = PyModule_GetDict(mod); |
| func = PyDict_GetItemString(dict, "warn_explicit"); |
| Py_DECREF(mod); |
| } |
| if (func == NULL) { |
| PySys_WriteStderr("warning: %s\n", message); |
| return 0; |
| } |
| else { |
| PyObject *res; |
| |
| if (category == NULL) |
| category = PyExc_RuntimeWarning; |
| if (registry == NULL) |
| registry = Py_None; |
| res = PyObject_CallFunction(func, "sOsizO", message, category, |
| filename, lineno, module, registry); |
| if (res == NULL) |
| return -1; |
| Py_DECREF(res); |
| return 0; |
| } |
| } |
| |
| |
| /* Set file and line information for the current exception. |
| If the exception is not a SyntaxError, also sets additional attributes |
| to make printing of exceptions believe it is a syntax error. */ |
| |
| void |
| PyErr_SyntaxLocation(const char *filename, int lineno) |
| { |
| PyObject *exc, *v, *tb, *tmp; |
| |
| /* add attributes for the line number and filename for the error */ |
| PyErr_Fetch(&exc, &v, &tb); |
| PyErr_NormalizeException(&exc, &v, &tb); |
| /* XXX check that it is, indeed, a syntax error. It might not |
| * be, though. */ |
| tmp = PyInt_FromLong(lineno); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else { |
| if (PyObject_SetAttrString(v, "lineno", tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } |
| if (filename != NULL) { |
| tmp = PyString_FromString(filename); |
| if (tmp == NULL) |
| PyErr_Clear(); |
| else { |
| if (PyObject_SetAttrString(v, "filename", tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } |
| |
| tmp = PyErr_ProgramText(filename, lineno); |
| if (tmp) { |
| if (PyObject_SetAttrString(v, "text", tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } |
| } |
| if (PyObject_SetAttrString(v, "offset", Py_None)) { |
| PyErr_Clear(); |
| } |
| if (exc != PyExc_SyntaxError) { |
| if (!PyObject_HasAttrString(v, "msg")) { |
| tmp = PyObject_Str(v); |
| if (tmp) { |
| if (PyObject_SetAttrString(v, "msg", tmp)) |
| PyErr_Clear(); |
| Py_DECREF(tmp); |
| } else { |
| PyErr_Clear(); |
| } |
| } |
| if (!PyObject_HasAttrString(v, "print_file_and_line")) { |
| if (PyObject_SetAttrString(v, "print_file_and_line", |
| Py_None)) |
| PyErr_Clear(); |
| } |
| } |
| PyErr_Restore(exc, v, tb); |
| } |
| |
| /* com_fetch_program_text will attempt to load the line of text that |
| the exception refers to. If it fails, it will return NULL but will |
| not set an exception. |
| |
| XXX The functionality of this function is quite similar to the |
| functionality in tb_displayline() in traceback.c. |
| */ |
| |
| PyObject * |
| PyErr_ProgramText(const char *filename, int lineno) |
| { |
| FILE *fp; |
| int i; |
| char linebuf[1000]; |
| |
| if (filename == NULL || *filename == '\0' || lineno <= 0) |
| return NULL; |
| fp = fopen(filename, "r" PY_STDIOTEXTMODE); |
| if (fp == NULL) |
| return NULL; |
| for (i = 0; i < lineno; i++) { |
| char *pLastChar = &linebuf[sizeof(linebuf) - 2]; |
| do { |
| *pLastChar = '\0'; |
| if (Py_UniversalNewlineFgets(linebuf, sizeof linebuf, fp, NULL) == NULL) |
| break; |
| /* fgets read *something*; if it didn't get as |
| far as pLastChar, it must have found a newline |
| or hit the end of the file; if pLastChar is \n, |
| it obviously found a newline; else we haven't |
| yet seen a newline, so must continue */ |
| } while (*pLastChar != '\0' && *pLastChar != '\n'); |
| } |
| fclose(fp); |
| if (i == lineno) { |
| char *p = linebuf; |
| while (*p == ' ' || *p == '\t' || *p == '\014') |
| p++; |
| return PyString_FromString(p); |
| } |
| return NULL; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |