static int vgetargs1(PyObject *args, char *format, va_list *p_va, int compat) { char msgbuf[256]; int levels[32]; char *fname = NULL; char *message = NULL; int min = -1; int max = 0; int level = 0; int endfmt = 0; char *formatsave = format; int i, len; char *msg; PyObject *freelist = NULL; assert(compat || (args != (PyObject*)NULL)); while (endfmt == 0) { int c = *format++; switch (c) { case '(': if (level == 0) max++; level++; break; case ')': if (level == 0) Py_FatalError("excess ')' in getargs format"); else level--; break; case '\0': endfmt = 1; break; case ':': fname = format; endfmt = 1; break; case ';': message = format; endfmt = 1; break; default: if (level == 0) { if (c == 'O') max++; else if (isalpha(c)) { if (c != 'e') /* skip encoded */ max++; } else if (c == '|') min = max; } break; } } if (level != 0) Py_FatalError(/* '(' */ "missing ')' in getargs format"); if (min < 0) min = max; format = formatsave; if (compat) { if (max == 0) { if (args == NULL) return 1; PyOS_snprintf(msgbuf, sizeof(msgbuf), "%.200s%s takes no arguments", fname==NULL ? "function" : fname, fname==NULL ? "" : "()"); PyErr_SetString(PyExc_TypeError, msgbuf); return 0; } else if (min == 1 && max == 1) { if (args == NULL) { PyOS_snprintf(msgbuf, sizeof(msgbuf), "%.200s%s takes at least one argument", fname==NULL ? "function" : fname, fname==NULL ? "" : "()"); PyErr_SetString(PyExc_TypeError, msgbuf); return 0; } msg = convertitem(args, &format, p_va, levels, msgbuf, sizeof(msgbuf), &freelist); if (msg == NULL) return cleanreturn(1, freelist); seterror(levels[0], msg, levels+1, fname, message); return cleanreturn(0, freelist); } else { PyErr_SetString(PyExc_SystemError, "old style getargs format uses new features"); return 0; } } if (!PyTuple_Check(args)) { PyErr_SetString(PyExc_SystemError, "new style getargs format but argument is not a tuple"); return 0; } len = PyTuple_GET_SIZE(args); if (len < min || max < len) { if (message == NULL) { PyOS_snprintf(msgbuf, sizeof(msgbuf), "%.150s%s takes %s %d argument%s " "(%d given)", fname==NULL ? "function" : fname, fname==NULL ? "" : "()", min==max ? "exactly" : len < min ? "at least" : "at most", len < min ? min : max, (len < min ? min : max) == 1 ? "" : "s", len); message = msgbuf; } PyErr_SetString(PyExc_TypeError, message); return 0; } for (i = 0; i < len; i++) { if (*format == '|') format++; msg = convertitem(PyTuple_GET_ITEM(args, i), &format, p_va, levels, msgbuf, sizeof(msgbuf), &freelist); if (msg) { seterror(i+1, msg, levels, fname, message); return cleanreturn(0, freelist); } } if (*format != '\0' && !isalpha((int)(*format)) && *format != '(' && *format != '|' && *format != ':' && *format != ';') { PyErr_Format(PyExc_SystemError, "bad format string: %.200s", formatsave); return cleanreturn(0, freelist); } return cleanreturn(1, freelist); }
static int vgetargs1(PyObject *args, const char *format, va_list *p_va, int flags) { //puts("vgetargs1"); //puts(format); char msgbuf[256]; int levels[32]; const char *fname = NULL; const char *message = NULL; int min = -1; int max = 0; int level = 0; int endfmt = 0; const char *formatsave = format; Py_ssize_t i, len; char *msg; PyObject *freelist = NULL; int compat = flags & FLAG_COMPAT; if (args == (PyObject*)NULL) jputs("vgetargs1 call with NULL-args"); assert(compat || (args != (PyObject*)NULL)); flags = flags & ~FLAG_COMPAT; while (endfmt == 0) { int c = *format++; //printf("process char: %c\n", c); switch (c) { case '(': if (level == 0) max++; level++; if (level >= 30) Py_FatalError("too many tuple nesting levels " "in argument format string"); break; case ')': if (level == 0) Py_FatalError("excess ')' in getargs format"); else level--; break; case '\0': endfmt = 1; break; case ':': fname = format; //puts("fname:"); //puts(fname); endfmt = 1; break; case ';': message = format; endfmt = 1; break; default: if (level == 0) { if (c == 'O') max++; else if (isalpha(Py_CHARMASK(c))) { if (c != 'e') /* skip encoded */ max++; } else if (c == '|') min = max; } break; } } //puts("format processed"); if (level != 0) Py_FatalError(/* '(' */ "missing ')' in getargs format"); //puts("a"); if (min < 0) min = max; format = formatsave; if (compat) { //puts("compat"); if (max == 0) { if (args == NULL) return 1; PyOS_snprintf(msgbuf, sizeof(msgbuf), "%.200s%s takes no arguments", fname==NULL ? "function" : fname, fname==NULL ? "" : "()"); PyErr_SetString(PyExc_TypeError, msgbuf); return 0; } else if (min == 1 && max == 1) { if (args == NULL) { PyOS_snprintf(msgbuf, sizeof(msgbuf), "%.200s%s takes at least one argument", fname==NULL ? "function" : fname, fname==NULL ? "" : "()"); PyErr_SetString(PyExc_TypeError, msgbuf); return 0; } msg = convertitem(args, &format, p_va, flags, levels, msgbuf, sizeof(msgbuf), &freelist); if (msg == NULL) return cleanreturn(1, freelist); seterror(levels[0], msg, levels+1, fname, message); return cleanreturn(0, freelist); } else { PyErr_SetString(PyExc_SystemError, "old style getargs format uses new features"); return 0; } } //puts("compat done"); if (!PyTuple_Check(args)) { PyErr_SetString(PyExc_SystemError, "new style getargs format but argument is not a tuple"); return 0; } len = PyTuple_GET_SIZE(args); if (len < min || max < len) { if (message == NULL) { PyOS_snprintf(msgbuf, sizeof(msgbuf), "%.150s%s takes %s %d argument%s " "(%ld given)", fname==NULL ? "function" : fname, fname==NULL ? "" : "()", min==max ? "exactly" : len < min ? "at least" : "at most", len < min ? min : max, (len < min ? min : max) == 1 ? "" : "s", Py_SAFE_DOWNCAST(len, Py_ssize_t, long)); message = msgbuf; } PyErr_SetString(PyExc_TypeError, message); return 0; }