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v3.10.20
Modules/_localemodule.c
923 строки
22 KB
Victor Stinner
bpo-42519: Replace PyMem_MALLOC() with PyMem_Malloc() (GH-23586)
01 дек 2020, 11:56
Не верифицирован
01 дек 2020, 11:56
00d7abd
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/*********************************************************** Copyright (C) 1997, 2002, 2003, 2007, 2008 Martin von Loewis Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies. This software comes with no warranty. Use at your own risk. ******************************************************************/ #define PY_SSIZE_T_CLEAN #include "Python.h" #include "pycore_fileutils.h" #include <stdio.h> #include <locale.h> #include <string.h> #include <ctype.h> #ifdef HAVE_ERRNO_H #include <errno.h> #endif #ifdef HAVE_LANGINFO_H #include <langinfo.h> #endif #ifdef HAVE_LIBINTL_H #include <libintl.h> #endif #ifdef HAVE_WCHAR_H #include <wchar.h> #endif #if defined(MS_WINDOWS) #define WIN32_LEAN_AND_MEAN #include <windows.h> #endif PyDoc_STRVAR(locale__doc__, "Support for POSIX locales."); typedef struct _locale_state { PyObject *Error; } _locale_state; static inline _locale_state* get_locale_state(PyObject *m) { void *state = PyModule_GetState(m); assert(state != NULL); return (_locale_state *)state; } #include "clinic/_localemodule.c.h" /*[clinic input] module _locale [clinic start generated code]*/ /*[clinic end generated code: output=da39a3ee5e6b4b0d input=ed98569b726feada]*/ /* support functions for formatting floating point numbers */ /* the grouping is terminated by either 0 or CHAR_MAX */ static PyObject* copy_grouping(const char* s) { int i; PyObject *result, *val = NULL; if (s[0] == '\0') { /* empty string: no grouping at all */ return PyList_New(0); } for (i = 0; s[i] != '\0' && s[i] != CHAR_MAX; i++) ; /* nothing */ result = PyList_New(i+1); if (!result) return NULL; i = -1; do { i++; val = PyLong_FromLong(s[i]); if (val == NULL) { Py_DECREF(result); return NULL; } PyList_SET_ITEM(result, i, val); } while (s[i] != '\0' && s[i] != CHAR_MAX); return result; } /*[clinic input] _locale.setlocale category: int locale: str(accept={str, NoneType}) = NULL / Activates/queries locale processing. [clinic start generated code]*/ static PyObject * _locale_setlocale_impl(PyObject *module, int category, const char *locale) /*[clinic end generated code: output=a0e777ae5d2ff117 input=dbe18f1d66c57a6a]*/ { char *result; PyObject *result_object; #if defined(MS_WINDOWS) if (category < LC_MIN || category > LC_MAX) { PyErr_SetString(get_locale_state(module)->Error, "invalid locale category"); return NULL; } #endif if (locale) { /* set locale */ result = setlocale(category, locale); if (!result) { /* operation failed, no setting was changed */ PyErr_SetString(get_locale_state(module)->Error, "unsupported locale setting"); return NULL; } result_object = PyUnicode_DecodeLocale(result, NULL); if (!result_object) return NULL; } else { /* get locale */ result = setlocale(category, NULL); if (!result) { PyErr_SetString(get_locale_state(module)->Error, "locale query failed"); return NULL; } result_object = PyUnicode_DecodeLocale(result, NULL); } return result_object; } static int locale_is_ascii(const char *str) { return (strlen(str) == 1 && ((unsigned char)str[0]) <= 127); } static int locale_decode_monetary(PyObject *dict, struct lconv *lc) { #ifndef MS_WINDOWS int change_locale; change_locale = (!locale_is_ascii(lc->int_curr_symbol) || !locale_is_ascii(lc->currency_symbol) || !locale_is_ascii(lc->mon_decimal_point) || !locale_is_ascii(lc->mon_thousands_sep)); /* Keep a copy of the LC_CTYPE locale */ char *oldloc = NULL, *loc = NULL; if (change_locale) { oldloc = setlocale(LC_CTYPE, NULL); if (!oldloc) { PyErr_SetString(PyExc_RuntimeWarning, "failed to get LC_CTYPE locale"); return -1; } oldloc = _PyMem_Strdup(oldloc); if (!oldloc) { PyErr_NoMemory(); return -1; } loc = setlocale(LC_MONETARY, NULL); if (loc != NULL && strcmp(loc, oldloc) == 0) { loc = NULL; } if (loc != NULL) { /* Only set the locale temporarily the LC_CTYPE locale to the LC_MONETARY locale if the two locales are different and at least one string is non-ASCII. */ setlocale(LC_CTYPE, loc); } } #define GET_LOCALE_STRING(ATTR) PyUnicode_DecodeLocale(lc->ATTR, NULL) #else /* MS_WINDOWS */ /* Use _W_* fields of Windows struct lconv */ #define GET_LOCALE_STRING(ATTR) PyUnicode_FromWideChar(lc->_W_ ## ATTR, -1) #endif /* MS_WINDOWS */ int res = -1; #define RESULT_STRING(ATTR) \ do { \ PyObject *obj; \ obj = GET_LOCALE_STRING(ATTR); \ if (obj == NULL) { \ goto done; \ } \ if (PyDict_SetItemString(dict, Py_STRINGIFY(ATTR), obj) < 0) { \ Py_DECREF(obj); \ goto done; \ } \ Py_DECREF(obj); \ } while (0) RESULT_STRING(int_curr_symbol); RESULT_STRING(currency_symbol); RESULT_STRING(mon_decimal_point); RESULT_STRING(mon_thousands_sep); #undef RESULT_STRING #undef GET_LOCALE_STRING res = 0; done: #ifndef MS_WINDOWS if (loc != NULL) { setlocale(LC_CTYPE, oldloc); } PyMem_Free(oldloc); #endif return res; } /*[clinic input] _locale.localeconv Returns numeric and monetary locale-specific parameters. [clinic start generated code]*/ static PyObject * _locale_localeconv_impl(PyObject *module) /*[clinic end generated code: output=43a54515e0a2aef5 input=f1132d15accf4444]*/ { PyObject* result; struct lconv *lc; PyObject *x; result = PyDict_New(); if (!result) { return NULL; } /* if LC_NUMERIC is different in the C library, use saved value */ lc = localeconv(); /* hopefully, the localeconv result survives the C library calls involved herein */ #define RESULT(key, obj)\ do { \ if (obj == NULL) \ goto failed; \ if (PyDict_SetItemString(result, key, obj) < 0) { \ Py_DECREF(obj); \ goto failed; \ } \ Py_DECREF(obj); \ } while (0) #ifdef MS_WINDOWS /* Use _W_* fields of Windows struct lconv */ #define GET_LOCALE_STRING(ATTR) PyUnicode_FromWideChar(lc->_W_ ## ATTR, -1) #else #define GET_LOCALE_STRING(ATTR) PyUnicode_DecodeLocale(lc->ATTR, NULL) #endif #define RESULT_STRING(s)\ do { \ x = GET_LOCALE_STRING(s); \ RESULT(#s, x); \ } while (0) #define RESULT_INT(i)\ do { \ x = PyLong_FromLong(lc->i); \ RESULT(#i, x); \ } while (0) /* Monetary information: LC_MONETARY encoding */ if (locale_decode_monetary(result, lc) < 0) { goto failed; } x = copy_grouping(lc->mon_grouping); RESULT("mon_grouping", x); RESULT_STRING(positive_sign); RESULT_STRING(negative_sign); RESULT_INT(int_frac_digits); RESULT_INT(frac_digits); RESULT_INT(p_cs_precedes); RESULT_INT(p_sep_by_space); RESULT_INT(n_cs_precedes); RESULT_INT(n_sep_by_space); RESULT_INT(p_sign_posn); RESULT_INT(n_sign_posn); /* Numeric information: LC_NUMERIC encoding */ PyObject *decimal_point = NULL, *thousands_sep = NULL; if (_Py_GetLocaleconvNumeric(lc, &decimal_point, &thousands_sep) < 0) { Py_XDECREF(decimal_point); Py_XDECREF(thousands_sep); goto failed; } if (PyDict_SetItemString(result, "decimal_point", decimal_point) < 0) { Py_DECREF(decimal_point); Py_DECREF(thousands_sep); goto failed; } Py_DECREF(decimal_point); if (PyDict_SetItemString(result, "thousands_sep", thousands_sep) < 0) { Py_DECREF(thousands_sep); goto failed; } Py_DECREF(thousands_sep); x = copy_grouping(lc->grouping); RESULT("grouping", x); return result; failed: Py_DECREF(result); return NULL; #undef RESULT #undef RESULT_STRING #undef RESULT_INT #undef GET_LOCALE_STRING } #if defined(HAVE_WCSCOLL) /*[clinic input] _locale.strcoll os1: unicode os2: unicode / Compares two strings according to the locale. [clinic start generated code]*/ static PyObject * _locale_strcoll_impl(PyObject *module, PyObject *os1, PyObject *os2) /*[clinic end generated code: output=82ddc6d62c76d618 input=693cd02bcbf38dd8]*/ { PyObject *result = NULL; wchar_t *ws1 = NULL, *ws2 = NULL; /* Convert the unicode strings to wchar[]. */ ws1 = PyUnicode_AsWideCharString(os1, NULL); if (ws1 == NULL) goto done; ws2 = PyUnicode_AsWideCharString(os2, NULL); if (ws2 == NULL) goto done; /* Collate the strings. */ result = PyLong_FromLong(wcscoll(ws1, ws2)); done: /* Deallocate everything. */ if (ws1) PyMem_Free(ws1); if (ws2) PyMem_Free(ws2); return result; } #endif #ifdef HAVE_WCSXFRM /*[clinic input] _locale.strxfrm string as str: unicode / Return a string that can be used as a key for locale-aware comparisons. [clinic start generated code]*/ static PyObject * _locale_strxfrm_impl(PyObject *module, PyObject *str) /*[clinic end generated code: output=3081866ebffc01af input=1378bbe6a88b4780]*/ { Py_ssize_t n1; wchar_t *s = NULL, *buf = NULL; size_t n2; PyObject *result = NULL; s = PyUnicode_AsWideCharString(str, &n1); if (s == NULL) goto exit; if (wcslen(s) != (size_t)n1) { PyErr_SetString(PyExc_ValueError, "embedded null character"); goto exit; } /* assume no change in size, first */ n1 = n1 + 1; buf = PyMem_New(wchar_t, n1); if (!buf) { PyErr_NoMemory(); goto exit; } errno = 0; n2 = wcsxfrm(buf, s, n1); if (errno && errno != ERANGE) { PyErr_SetFromErrno(PyExc_OSError); goto exit; } if (n2 >= (size_t)n1) { /* more space needed */ wchar_t * new_buf = PyMem_Realloc(buf, (n2+1)*sizeof(wchar_t)); if (!new_buf) { PyErr_NoMemory(); goto exit; } buf = new_buf; errno = 0; n2 = wcsxfrm(buf, s, n2+1); if (errno) { PyErr_SetFromErrno(PyExc_OSError); goto exit; } } result = PyUnicode_FromWideChar(buf, n2); exit: PyMem_Free(buf); PyMem_Free(s); return result; } #endif #if defined(MS_WINDOWS) /*[clinic input] _locale._getdefaultlocale [clinic start generated code]*/ static PyObject * _locale__getdefaultlocale_impl(PyObject *module) /*[clinic end generated code: output=e6254088579534c2 input=003ea41acd17f7c7]*/ { char encoding[20]; char locale[100]; PyOS_snprintf(encoding, sizeof(encoding), "cp%u", GetACP()); if (GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SISO639LANGNAME, locale, sizeof(locale))) { Py_ssize_t i = strlen(locale); locale[i++] = '_'; if (GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SISO3166CTRYNAME, locale+i, (int)(sizeof(locale)-i))) return Py_BuildValue("ss", locale, encoding); } /* If we end up here, this windows version didn't know about ISO639/ISO3166 names (it's probably Windows 95). Return the Windows language identifier instead (a hexadecimal number) */ locale[0] = '0'; locale[1] = 'x'; if (GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_IDEFAULTLANGUAGE, locale+2, sizeof(locale)-2)) { return Py_BuildValue("ss", locale, encoding); } /* cannot determine the language code (very unlikely) */ Py_INCREF(Py_None); return Py_BuildValue("Os", Py_None, encoding); } #endif #ifdef HAVE_LANGINFO_H #define LANGINFO(X) {#X, X} static struct langinfo_constant{ char* name; int value; } langinfo_constants[] = { /* These constants should exist on any langinfo implementation */ LANGINFO(DAY_1), LANGINFO(DAY_2), LANGINFO(DAY_3), LANGINFO(DAY_4), LANGINFO(DAY_5), LANGINFO(DAY_6), LANGINFO(DAY_7), LANGINFO(ABDAY_1), LANGINFO(ABDAY_2), LANGINFO(ABDAY_3), LANGINFO(ABDAY_4), LANGINFO(ABDAY_5), LANGINFO(ABDAY_6), LANGINFO(ABDAY_7), LANGINFO(MON_1), LANGINFO(MON_2), LANGINFO(MON_3), LANGINFO(MON_4), LANGINFO(MON_5), LANGINFO(MON_6), LANGINFO(MON_7), LANGINFO(MON_8), LANGINFO(MON_9), LANGINFO(MON_10), LANGINFO(MON_11), LANGINFO(MON_12), LANGINFO(ABMON_1), LANGINFO(ABMON_2), LANGINFO(ABMON_3), LANGINFO(ABMON_4), LANGINFO(ABMON_5), LANGINFO(ABMON_6), LANGINFO(ABMON_7), LANGINFO(ABMON_8), LANGINFO(ABMON_9), LANGINFO(ABMON_10), LANGINFO(ABMON_11), LANGINFO(ABMON_12), #ifdef RADIXCHAR /* The following are not available with glibc 2.0 */ LANGINFO(RADIXCHAR), LANGINFO(THOUSEP), /* YESSTR and NOSTR are deprecated in glibc, since they are a special case of message translation, which should be rather done using gettext. So we don't expose it to Python in the first place. LANGINFO(YESSTR), LANGINFO(NOSTR), */ LANGINFO(CRNCYSTR), #endif LANGINFO(D_T_FMT), LANGINFO(D_FMT), LANGINFO(T_FMT), LANGINFO(AM_STR), LANGINFO(PM_STR), /* The following constants are available only with XPG4, but... OpenBSD doesn't have CODESET but has T_FMT_AMPM, and doesn't have a few of the others. Solution: ifdef-test them all. */ #ifdef CODESET LANGINFO(CODESET), #endif #ifdef T_FMT_AMPM LANGINFO(T_FMT_AMPM), #endif #ifdef ERA LANGINFO(ERA), #endif #ifdef ERA_D_FMT LANGINFO(ERA_D_FMT), #endif #ifdef ERA_D_T_FMT LANGINFO(ERA_D_T_FMT), #endif #ifdef ERA_T_FMT LANGINFO(ERA_T_FMT), #endif #ifdef ALT_DIGITS LANGINFO(ALT_DIGITS), #endif #ifdef YESEXPR LANGINFO(YESEXPR), #endif #ifdef NOEXPR LANGINFO(NOEXPR), #endif #ifdef _DATE_FMT /* This is not available in all glibc versions that have CODESET. */ LANGINFO(_DATE_FMT), #endif {0, 0} }; /*[clinic input] _locale.nl_langinfo key as item: int / Return the value for the locale information associated with key. [clinic start generated code]*/ static PyObject * _locale_nl_langinfo_impl(PyObject *module, int item) /*[clinic end generated code: output=6aea457b47e077a3 input=00798143eecfeddc]*/ { int i; /* Check whether this is a supported constant. GNU libc sometimes returns numeric values in the char* return value, which would crash PyUnicode_FromString. */ for (i = 0; langinfo_constants[i].name; i++) if (langinfo_constants[i].value == item) { /* Check NULL as a workaround for GNU libc's returning NULL instead of an empty string for nl_langinfo(ERA). */ const char *result = nl_langinfo(item); result = result != NULL ? result : ""; return PyUnicode_DecodeLocale(result, NULL); } PyErr_SetString(PyExc_ValueError, "unsupported langinfo constant"); return NULL; } #endif /* HAVE_LANGINFO_H */ #ifdef HAVE_LIBINTL_H /*[clinic input] _locale.gettext msg as in: str / gettext(msg) -> string Return translation of msg. [clinic start generated code]*/ static PyObject * _locale_gettext_impl(PyObject *module, const char *in) /*[clinic end generated code: output=493bb4b38a4704fe input=949fc8efc2bb3bc3]*/ { return PyUnicode_DecodeLocale(gettext(in), NULL); } /*[clinic input] _locale.dgettext domain: str(accept={str, NoneType}) msg as in: str / dgettext(domain, msg) -> string Return translation of msg in domain. [clinic start generated code]*/ static PyObject * _locale_dgettext_impl(PyObject *module, const char *domain, const char *in) /*[clinic end generated code: output=3c0cd5287b972c8f input=a277388a635109d8]*/ { return PyUnicode_DecodeLocale(dgettext(domain, in), NULL); } /*[clinic input] _locale.dcgettext domain: str(accept={str, NoneType}) msg as msgid: str category: int / Return translation of msg in domain and category. [clinic start generated code]*/ static PyObject * _locale_dcgettext_impl(PyObject *module, const char *domain, const char *msgid, int category) /*[clinic end generated code: output=0f4cc4fce0aa283f input=ec5f8fed4336de67]*/ { return PyUnicode_DecodeLocale(dcgettext(domain,msgid,category), NULL); } /*[clinic input] _locale.textdomain domain: str(accept={str, NoneType}) / Set the C library's textdmain to domain, returning the new domain. [clinic start generated code]*/ static PyObject * _locale_textdomain_impl(PyObject *module, const char *domain) /*[clinic end generated code: output=7992df06aadec313 input=66359716f5eb1d38]*/ { domain = textdomain(domain); if (!domain) { PyErr_SetFromErrno(PyExc_OSError); return NULL; } return PyUnicode_DecodeLocale(domain, NULL); } /*[clinic input] _locale.bindtextdomain domain: str dir as dirname_obj: object / Bind the C library's domain to dir. [clinic start generated code]*/ static PyObject * _locale_bindtextdomain_impl(PyObject *module, const char *domain, PyObject *dirname_obj) /*[clinic end generated code: output=6d6f3c7b345d785c input=c0dff085acfe272b]*/ { const char *dirname, *current_dirname; PyObject *dirname_bytes = NULL, *result; if (!strlen(domain)) { PyErr_SetString(get_locale_state(module)->Error, "domain must be a non-empty string"); return 0; } if (dirname_obj != Py_None) { if (!PyUnicode_FSConverter(dirname_obj, &dirname_bytes)) return NULL; dirname = PyBytes_AsString(dirname_bytes); } else { dirname_bytes = NULL; dirname = NULL; } current_dirname = bindtextdomain(domain, dirname); if (current_dirname == NULL) { Py_XDECREF(dirname_bytes); PyErr_SetFromErrno(PyExc_OSError); return NULL; } result = PyUnicode_DecodeLocale(current_dirname, NULL); Py_XDECREF(dirname_bytes); return result; } #ifdef HAVE_BIND_TEXTDOMAIN_CODESET /*[clinic input] _locale.bind_textdomain_codeset domain: str codeset: str(accept={str, NoneType}) / Bind the C library's domain to codeset. [clinic start generated code]*/ static PyObject * _locale_bind_textdomain_codeset_impl(PyObject *module, const char *domain, const char *codeset) /*[clinic end generated code: output=fa452f9c8b1b9e89 input=23fbe3540400f259]*/ { codeset = bind_textdomain_codeset(domain, codeset); if (codeset) { return PyUnicode_DecodeLocale(codeset, NULL); } Py_RETURN_NONE; } #endif // HAVE_BIND_TEXTDOMAIN_CODESET #endif // HAVE_LIBINTL_H /*[clinic input] _locale._get_locale_encoding Get the current locale encoding. [clinic start generated code]*/ static PyObject * _locale__get_locale_encoding_impl(PyObject *module) /*[clinic end generated code: output=e8e2f6f6f184591a input=513d9961d2f45c76]*/ { return _Py_GetLocaleEncodingObject(); } static struct PyMethodDef PyLocale_Methods[] = { _LOCALE_SETLOCALE_METHODDEF _LOCALE_LOCALECONV_METHODDEF #ifdef HAVE_WCSCOLL _LOCALE_STRCOLL_METHODDEF #endif #ifdef HAVE_WCSXFRM _LOCALE_STRXFRM_METHODDEF #endif #if defined(MS_WINDOWS) _LOCALE__GETDEFAULTLOCALE_METHODDEF #endif #ifdef HAVE_LANGINFO_H _LOCALE_NL_LANGINFO_METHODDEF #endif #ifdef HAVE_LIBINTL_H _LOCALE_GETTEXT_METHODDEF _LOCALE_DGETTEXT_METHODDEF _LOCALE_DCGETTEXT_METHODDEF _LOCALE_TEXTDOMAIN_METHODDEF _LOCALE_BINDTEXTDOMAIN_METHODDEF #ifdef HAVE_BIND_TEXTDOMAIN_CODESET _LOCALE_BIND_TEXTDOMAIN_CODESET_METHODDEF #endif #endif _LOCALE__GET_LOCALE_ENCODING_METHODDEF {NULL, NULL} }; static int _locale_exec(PyObject *module) { #ifdef HAVE_LANGINFO_H int i; #endif #define ADD_INT(module, value) \ do { \ if (PyModule_AddIntConstant(module, #value, value) < 0) { \ return -1; \ } \ } while (0) ADD_INT(module, LC_CTYPE); ADD_INT(module, LC_TIME); ADD_INT(module, LC_COLLATE); ADD_INT(module, LC_MONETARY); #ifdef LC_MESSAGES ADD_INT(module, LC_MESSAGES); #endif /* LC_MESSAGES */ ADD_INT(module, LC_NUMERIC); ADD_INT(module, LC_ALL); ADD_INT(module, CHAR_MAX); _locale_state *state = get_locale_state(module); state->Error = PyErr_NewException("locale.Error", NULL, NULL); if (state->Error == NULL) { return -1; } Py_INCREF(get_locale_state(module)->Error); if (PyModule_AddObject(module, "Error", get_locale_state(module)->Error) < 0) { Py_DECREF(get_locale_state(module)->Error); return -1; } #ifdef HAVE_LANGINFO_H for (i = 0; langinfo_constants[i].name; i++) { if (PyModule_AddIntConstant(module, langinfo_constants[i].name, langinfo_constants[i].value) < 0) { return -1; } } #endif if (PyErr_Occurred()) { return -1; } return 0; #undef ADD_INT } static struct PyModuleDef_Slot _locale_slots[] = { {Py_mod_exec, _locale_exec}, {0, NULL} }; static int locale_traverse(PyObject *module, visitproc visit, void *arg) { _locale_state *state = get_locale_state(module); Py_VISIT(state->Error); return 0; } static int locale_clear(PyObject *module) { _locale_state *state = get_locale_state(module); Py_CLEAR(state->Error); return 0; } static void locale_free(PyObject *module) { locale_clear(module); } static struct PyModuleDef _localemodule = { PyModuleDef_HEAD_INIT, "_locale", locale__doc__, sizeof(_locale_state), PyLocale_Methods, _locale_slots, locale_traverse, locale_clear, (freefunc)locale_free, }; PyMODINIT_FUNC PyInit__locale(void) { return PyModuleDef_Init(&_localemodule); } /* Local variables: c-basic-offset: 4 indent-tabs-mode: nil End: */