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969 lines
24 KiB
969 lines
24 KiB
#include "Python.h"
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#include "pycore_getopt.h" // _PyOS_GetOpt()
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#include "pycore_initconfig.h" // _PyArgv
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#include "pycore_pymem.h" // _PyMem_GetAllocatorName()
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#include "pycore_runtime.h" // _PyRuntime_Initialize()
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#include <locale.h> // setlocale()
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#define DECODE_LOCALE_ERR(NAME, LEN) \
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(((LEN) == -2) \
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? _PyStatus_ERR("cannot decode " NAME) \
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: _PyStatus_NO_MEMORY())
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/* Forward declarations */
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static void
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preconfig_copy(PyPreConfig *config, const PyPreConfig *config2);
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/* --- File system encoding/errors -------------------------------- */
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/* The filesystem encoding is chosen by config_init_fs_encoding(),
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see also initfsencoding().
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Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors
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are encoded to UTF-8. */
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const char *Py_FileSystemDefaultEncoding = NULL;
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int Py_HasFileSystemDefaultEncoding = 0;
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const char *Py_FileSystemDefaultEncodeErrors = NULL;
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int _Py_HasFileSystemDefaultEncodeErrors = 0;
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void
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_Py_ClearFileSystemEncoding(void)
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{
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if (!Py_HasFileSystemDefaultEncoding && Py_FileSystemDefaultEncoding) {
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PyMem_RawFree((char*)Py_FileSystemDefaultEncoding);
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Py_FileSystemDefaultEncoding = NULL;
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}
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if (!_Py_HasFileSystemDefaultEncodeErrors && Py_FileSystemDefaultEncodeErrors) {
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PyMem_RawFree((char*)Py_FileSystemDefaultEncodeErrors);
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Py_FileSystemDefaultEncodeErrors = NULL;
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}
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}
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/* Set Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors
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global configuration variables. */
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int
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_Py_SetFileSystemEncoding(const char *encoding, const char *errors)
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{
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char *encoding2 = _PyMem_RawStrdup(encoding);
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if (encoding2 == NULL) {
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return -1;
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}
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char *errors2 = _PyMem_RawStrdup(errors);
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if (errors2 == NULL) {
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PyMem_RawFree(encoding2);
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return -1;
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}
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_Py_ClearFileSystemEncoding();
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Py_FileSystemDefaultEncoding = encoding2;
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Py_HasFileSystemDefaultEncoding = 0;
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Py_FileSystemDefaultEncodeErrors = errors2;
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_Py_HasFileSystemDefaultEncodeErrors = 0;
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return 0;
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}
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/* --- _PyArgv ---------------------------------------------------- */
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/* Decode bytes_argv using Py_DecodeLocale() */
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PyStatus
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_PyArgv_AsWstrList(const _PyArgv *args, PyWideStringList *list)
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{
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PyWideStringList wargv = _PyWideStringList_INIT;
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if (args->use_bytes_argv) {
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size_t size = sizeof(wchar_t*) * args->argc;
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wargv.items = (wchar_t **)PyMem_RawMalloc(size);
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if (wargv.items == NULL) {
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return _PyStatus_NO_MEMORY();
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}
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for (Py_ssize_t i = 0; i < args->argc; i++) {
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size_t len;
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wchar_t *arg = Py_DecodeLocale(args->bytes_argv[i], &len);
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if (arg == NULL) {
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_PyWideStringList_Clear(&wargv);
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return DECODE_LOCALE_ERR("command line arguments",
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(Py_ssize_t)len);
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}
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wargv.items[i] = arg;
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wargv.length++;
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}
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_PyWideStringList_Clear(list);
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*list = wargv;
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}
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else {
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wargv.length = args->argc;
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wargv.items = (wchar_t **)args->wchar_argv;
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if (_PyWideStringList_Copy(list, &wargv) < 0) {
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return _PyStatus_NO_MEMORY();
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}
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}
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return _PyStatus_OK();
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}
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/* --- _PyPreCmdline ------------------------------------------------- */
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void
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_PyPreCmdline_Clear(_PyPreCmdline *cmdline)
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{
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_PyWideStringList_Clear(&cmdline->argv);
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_PyWideStringList_Clear(&cmdline->xoptions);
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}
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PyStatus
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_PyPreCmdline_SetArgv(_PyPreCmdline *cmdline, const _PyArgv *args)
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{
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return _PyArgv_AsWstrList(args, &cmdline->argv);
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}
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static void
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precmdline_get_preconfig(_PyPreCmdline *cmdline, const PyPreConfig *config)
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{
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#define COPY_ATTR(ATTR) \
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if (config->ATTR != -1) { \
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cmdline->ATTR = config->ATTR; \
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}
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COPY_ATTR(isolated);
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COPY_ATTR(use_environment);
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COPY_ATTR(dev_mode);
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#undef COPY_ATTR
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}
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static void
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precmdline_set_preconfig(const _PyPreCmdline *cmdline, PyPreConfig *config)
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{
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#define COPY_ATTR(ATTR) \
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config->ATTR = cmdline->ATTR
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COPY_ATTR(isolated);
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COPY_ATTR(use_environment);
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COPY_ATTR(dev_mode);
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#undef COPY_ATTR
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}
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PyStatus
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_PyPreCmdline_SetConfig(const _PyPreCmdline *cmdline, PyConfig *config)
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{
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#define COPY_ATTR(ATTR) \
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config->ATTR = cmdline->ATTR
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PyStatus status = _PyWideStringList_Extend(&config->xoptions, &cmdline->xoptions);
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if (_PyStatus_EXCEPTION(status)) {
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return status;
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}
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COPY_ATTR(isolated);
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COPY_ATTR(use_environment);
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COPY_ATTR(dev_mode);
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return _PyStatus_OK();
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#undef COPY_ATTR
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}
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/* Parse the command line arguments */
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static PyStatus
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precmdline_parse_cmdline(_PyPreCmdline *cmdline)
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{
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const PyWideStringList *argv = &cmdline->argv;
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_PyOS_ResetGetOpt();
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/* Don't log parsing errors into stderr here: PyConfig_Read()
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is responsible for that */
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_PyOS_opterr = 0;
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do {
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int longindex = -1;
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int c = _PyOS_GetOpt(argv->length, argv->items, &longindex);
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if (c == EOF || c == 'c' || c == 'm') {
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break;
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}
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switch (c) {
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case 'E':
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cmdline->use_environment = 0;
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break;
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case 'I':
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cmdline->isolated = 1;
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break;
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case 'X':
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{
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PyStatus status = PyWideStringList_Append(&cmdline->xoptions,
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_PyOS_optarg);
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if (_PyStatus_EXCEPTION(status)) {
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return status;
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}
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break;
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}
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default:
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/* ignore other argument:
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handled by PyConfig_Read() */
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break;
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}
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} while (1);
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return _PyStatus_OK();
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}
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PyStatus
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_PyPreCmdline_Read(_PyPreCmdline *cmdline, const PyPreConfig *preconfig)
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{
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precmdline_get_preconfig(cmdline, preconfig);
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if (preconfig->parse_argv) {
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PyStatus status = precmdline_parse_cmdline(cmdline);
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if (_PyStatus_EXCEPTION(status)) {
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return status;
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}
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}
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/* isolated, use_environment */
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if (cmdline->isolated < 0) {
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cmdline->isolated = 0;
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}
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if (cmdline->isolated > 0) {
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cmdline->use_environment = 0;
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}
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if (cmdline->use_environment < 0) {
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cmdline->use_environment = 0;
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}
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/* dev_mode */
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if ((cmdline->dev_mode < 0)
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&& (_Py_get_xoption(&cmdline->xoptions, L"dev")
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|| _Py_GetEnv(cmdline->use_environment, "PYTHONDEVMODE")))
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{
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cmdline->dev_mode = 1;
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}
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if (cmdline->dev_mode < 0) {
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cmdline->dev_mode = 0;
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}
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assert(cmdline->use_environment >= 0);
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assert(cmdline->isolated >= 0);
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assert(cmdline->dev_mode >= 0);
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return _PyStatus_OK();
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}
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/* --- PyPreConfig ----------------------------------------------- */
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void
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_PyPreConfig_InitCompatConfig(PyPreConfig *config)
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{
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memset(config, 0, sizeof(*config));
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config->_config_init = (int)_PyConfig_INIT_COMPAT;
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config->parse_argv = 0;
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config->isolated = -1;
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config->use_environment = -1;
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config->configure_locale = 1;
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/* bpo-36443: C locale coercion (PEP 538) and UTF-8 Mode (PEP 540)
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are disabled by default using the Compat configuration.
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Py_UTF8Mode=1 enables the UTF-8 mode. PYTHONUTF8 environment variable
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is ignored (even if use_environment=1). */
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config->utf8_mode = 0;
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config->coerce_c_locale = 0;
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config->coerce_c_locale_warn = 0;
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config->dev_mode = -1;
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config->allocator = PYMEM_ALLOCATOR_NOT_SET;
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#ifdef MS_WINDOWS
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config->legacy_windows_fs_encoding = -1;
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#endif
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}
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void
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PyPreConfig_InitPythonConfig(PyPreConfig *config)
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{
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_PyPreConfig_InitCompatConfig(config);
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config->_config_init = (int)_PyConfig_INIT_PYTHON;
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config->isolated = 0;
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config->parse_argv = 1;
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config->use_environment = 1;
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/* Set to -1 to enable C locale coercion (PEP 538) and UTF-8 Mode (PEP 540)
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depending on the LC_CTYPE locale, PYTHONUTF8 and PYTHONCOERCECLOCALE
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environment variables. */
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config->coerce_c_locale = -1;
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config->coerce_c_locale_warn = -1;
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config->utf8_mode = -1;
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#ifdef MS_WINDOWS
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config->legacy_windows_fs_encoding = 0;
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#endif
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}
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void
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PyPreConfig_InitIsolatedConfig(PyPreConfig *config)
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{
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_PyPreConfig_InitCompatConfig(config);
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config->_config_init = (int)_PyConfig_INIT_ISOLATED;
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config->configure_locale = 0;
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config->isolated = 1;
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config->use_environment = 0;
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config->utf8_mode = 0;
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config->dev_mode = 0;
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#ifdef MS_WINDOWS
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config->legacy_windows_fs_encoding = 0;
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#endif
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}
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PyStatus
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_PyPreConfig_InitFromPreConfig(PyPreConfig *config,
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const PyPreConfig *config2)
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{
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PyPreConfig_InitPythonConfig(config);
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preconfig_copy(config, config2);
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return _PyStatus_OK();
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}
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void
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_PyPreConfig_InitFromConfig(PyPreConfig *preconfig, const PyConfig *config)
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{
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_PyConfigInitEnum config_init = (_PyConfigInitEnum)config->_config_init;
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switch (config_init) {
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case _PyConfig_INIT_PYTHON:
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PyPreConfig_InitPythonConfig(preconfig);
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break;
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case _PyConfig_INIT_ISOLATED:
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PyPreConfig_InitIsolatedConfig(preconfig);
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break;
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case _PyConfig_INIT_COMPAT:
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default:
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_PyPreConfig_InitCompatConfig(preconfig);
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}
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_PyPreConfig_GetConfig(preconfig, config);
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}
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static void
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preconfig_copy(PyPreConfig *config, const PyPreConfig *config2)
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{
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#define COPY_ATTR(ATTR) config->ATTR = config2->ATTR
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COPY_ATTR(_config_init);
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COPY_ATTR(parse_argv);
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COPY_ATTR(isolated);
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COPY_ATTR(use_environment);
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COPY_ATTR(configure_locale);
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COPY_ATTR(dev_mode);
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COPY_ATTR(coerce_c_locale);
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COPY_ATTR(coerce_c_locale_warn);
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COPY_ATTR(utf8_mode);
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COPY_ATTR(allocator);
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#ifdef MS_WINDOWS
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COPY_ATTR(legacy_windows_fs_encoding);
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#endif
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#undef COPY_ATTR
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}
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PyObject*
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_PyPreConfig_AsDict(const PyPreConfig *config)
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{
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PyObject *dict;
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dict = PyDict_New();
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if (dict == NULL) {
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return NULL;
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}
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#define SET_ITEM_INT(ATTR) \
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do { \
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PyObject *obj = PyLong_FromLong(config->ATTR); \
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if (obj == NULL) { \
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goto fail; \
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} \
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int res = PyDict_SetItemString(dict, #ATTR, obj); \
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Py_DECREF(obj); \
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if (res < 0) { \
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goto fail; \
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} \
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} while (0)
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SET_ITEM_INT(_config_init);
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SET_ITEM_INT(parse_argv);
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SET_ITEM_INT(isolated);
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SET_ITEM_INT(use_environment);
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SET_ITEM_INT(configure_locale);
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SET_ITEM_INT(coerce_c_locale);
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SET_ITEM_INT(coerce_c_locale_warn);
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SET_ITEM_INT(utf8_mode);
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#ifdef MS_WINDOWS
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SET_ITEM_INT(legacy_windows_fs_encoding);
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#endif
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SET_ITEM_INT(dev_mode);
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SET_ITEM_INT(allocator);
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return dict;
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fail:
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Py_DECREF(dict);
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return NULL;
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#undef SET_ITEM_INT
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}
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void
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_PyPreConfig_GetConfig(PyPreConfig *preconfig, const PyConfig *config)
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{
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#define COPY_ATTR(ATTR) \
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if (config->ATTR != -1) { \
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preconfig->ATTR = config->ATTR; \
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}
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COPY_ATTR(parse_argv);
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COPY_ATTR(isolated);
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COPY_ATTR(use_environment);
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COPY_ATTR(dev_mode);
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#undef COPY_ATTR
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}
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static void
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preconfig_get_global_vars(PyPreConfig *config)
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{
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if (config->_config_init != _PyConfig_INIT_COMPAT) {
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/* Python and Isolated configuration ignore global variables */
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return;
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}
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#define COPY_FLAG(ATTR, VALUE) \
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if (config->ATTR < 0) { \
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config->ATTR = VALUE; \
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}
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#define COPY_NOT_FLAG(ATTR, VALUE) \
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if (config->ATTR < 0) { \
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config->ATTR = !(VALUE); \
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}
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COPY_FLAG(isolated, Py_IsolatedFlag);
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COPY_NOT_FLAG(use_environment, Py_IgnoreEnvironmentFlag);
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if (Py_UTF8Mode > 0) {
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config->utf8_mode = Py_UTF8Mode;
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}
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#ifdef MS_WINDOWS
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COPY_FLAG(legacy_windows_fs_encoding, Py_LegacyWindowsFSEncodingFlag);
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#endif
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#undef COPY_FLAG
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#undef COPY_NOT_FLAG
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}
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static void
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preconfig_set_global_vars(const PyPreConfig *config)
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{
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#define COPY_FLAG(ATTR, VAR) \
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if (config->ATTR >= 0) { \
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VAR = config->ATTR; \
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}
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#define COPY_NOT_FLAG(ATTR, VAR) \
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if (config->ATTR >= 0) { \
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VAR = !config->ATTR; \
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}
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COPY_FLAG(isolated, Py_IsolatedFlag);
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COPY_NOT_FLAG(use_environment, Py_IgnoreEnvironmentFlag);
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#ifdef MS_WINDOWS
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COPY_FLAG(legacy_windows_fs_encoding, Py_LegacyWindowsFSEncodingFlag);
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#endif
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COPY_FLAG(utf8_mode, Py_UTF8Mode);
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#undef COPY_FLAG
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#undef COPY_NOT_FLAG
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}
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const char*
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_Py_GetEnv(int use_environment, const char *name)
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{
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assert(use_environment >= 0);
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if (!use_environment) {
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return NULL;
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}
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const char *var = getenv(name);
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if (var && var[0] != '\0') {
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return var;
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}
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else {
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return NULL;
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}
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}
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int
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_Py_str_to_int(const char *str, int *result)
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{
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const char *endptr = str;
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errno = 0;
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long value = strtol(str, (char **)&endptr, 10);
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if (*endptr != '\0' || errno == ERANGE) {
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return -1;
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}
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if (value < INT_MIN || value > INT_MAX) {
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return -1;
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}
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*result = (int)value;
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return 0;
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}
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void
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_Py_get_env_flag(int use_environment, int *flag, const char *name)
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{
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const char *var = _Py_GetEnv(use_environment, name);
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if (!var) {
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return;
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}
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int value;
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if (_Py_str_to_int(var, &value) < 0 || value < 0) {
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/* PYTHONDEBUG=text and PYTHONDEBUG=-2 behave as PYTHONDEBUG=1 */
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value = 1;
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}
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if (*flag < value) {
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*flag = value;
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}
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}
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|
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const wchar_t*
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_Py_get_xoption(const PyWideStringList *xoptions, const wchar_t *name)
|
|
{
|
|
for (Py_ssize_t i=0; i < xoptions->length; i++) {
|
|
const wchar_t *option = xoptions->items[i];
|
|
size_t len;
|
|
wchar_t *sep = wcschr(option, L'=');
|
|
if (sep != NULL) {
|
|
len = (sep - option);
|
|
}
|
|
else {
|
|
len = wcslen(option);
|
|
}
|
|
if (wcsncmp(option, name, len) == 0 && name[len] == L'\0') {
|
|
return option;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static PyStatus
|
|
preconfig_init_utf8_mode(PyPreConfig *config, const _PyPreCmdline *cmdline)
|
|
{
|
|
#ifdef MS_WINDOWS
|
|
if (config->legacy_windows_fs_encoding) {
|
|
config->utf8_mode = 0;
|
|
}
|
|
#endif
|
|
|
|
if (config->utf8_mode >= 0) {
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
const wchar_t *xopt;
|
|
xopt = _Py_get_xoption(&cmdline->xoptions, L"utf8");
|
|
if (xopt) {
|
|
wchar_t *sep = wcschr(xopt, L'=');
|
|
if (sep) {
|
|
xopt = sep + 1;
|
|
if (wcscmp(xopt, L"1") == 0) {
|
|
config->utf8_mode = 1;
|
|
}
|
|
else if (wcscmp(xopt, L"0") == 0) {
|
|
config->utf8_mode = 0;
|
|
}
|
|
else {
|
|
return _PyStatus_ERR("invalid -X utf8 option value");
|
|
}
|
|
}
|
|
else {
|
|
config->utf8_mode = 1;
|
|
}
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
const char *opt = _Py_GetEnv(config->use_environment, "PYTHONUTF8");
|
|
if (opt) {
|
|
if (strcmp(opt, "1") == 0) {
|
|
config->utf8_mode = 1;
|
|
}
|
|
else if (strcmp(opt, "0") == 0) {
|
|
config->utf8_mode = 0;
|
|
}
|
|
else {
|
|
return _PyStatus_ERR("invalid PYTHONUTF8 environment "
|
|
"variable value");
|
|
}
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
|
|
#ifndef MS_WINDOWS
|
|
if (config->utf8_mode < 0) {
|
|
/* The C locale and the POSIX locale enable the UTF-8 Mode (PEP 540) */
|
|
const char *ctype_loc = setlocale(LC_CTYPE, NULL);
|
|
if (ctype_loc != NULL
|
|
&& (strcmp(ctype_loc, "C") == 0
|
|
|| strcmp(ctype_loc, "POSIX") == 0))
|
|
{
|
|
config->utf8_mode = 1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (config->utf8_mode < 0) {
|
|
config->utf8_mode = 0;
|
|
}
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
|
|
static void
|
|
preconfig_init_coerce_c_locale(PyPreConfig *config)
|
|
{
|
|
if (!config->configure_locale) {
|
|
config->coerce_c_locale = 0;
|
|
config->coerce_c_locale_warn = 0;
|
|
return;
|
|
}
|
|
|
|
const char *env = _Py_GetEnv(config->use_environment, "PYTHONCOERCECLOCALE");
|
|
if (env) {
|
|
if (strcmp(env, "0") == 0) {
|
|
if (config->coerce_c_locale < 0) {
|
|
config->coerce_c_locale = 0;
|
|
}
|
|
}
|
|
else if (strcmp(env, "warn") == 0) {
|
|
if (config->coerce_c_locale_warn < 0) {
|
|
config->coerce_c_locale_warn = 1;
|
|
}
|
|
}
|
|
else {
|
|
if (config->coerce_c_locale < 0) {
|
|
config->coerce_c_locale = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Test if coerce_c_locale equals to -1 or equals to 1:
|
|
PYTHONCOERCECLOCALE=1 doesn't imply that the C locale is always coerced.
|
|
It is only coerced if if the LC_CTYPE locale is "C". */
|
|
if (config->coerce_c_locale < 0 || config->coerce_c_locale == 1) {
|
|
/* The C locale enables the C locale coercion (PEP 538) */
|
|
if (_Py_LegacyLocaleDetected(0)) {
|
|
config->coerce_c_locale = 2;
|
|
}
|
|
else {
|
|
config->coerce_c_locale = 0;
|
|
}
|
|
}
|
|
|
|
if (config->coerce_c_locale_warn < 0) {
|
|
config->coerce_c_locale_warn = 0;
|
|
}
|
|
}
|
|
|
|
|
|
static PyStatus
|
|
preconfig_init_allocator(PyPreConfig *config)
|
|
{
|
|
if (config->allocator == PYMEM_ALLOCATOR_NOT_SET) {
|
|
/* bpo-34247. The PYTHONMALLOC environment variable has the priority
|
|
over PYTHONDEV env var and "-X dev" command line option.
|
|
For example, PYTHONMALLOC=malloc PYTHONDEVMODE=1 sets the memory
|
|
allocators to "malloc" (and not to "debug"). */
|
|
const char *envvar = _Py_GetEnv(config->use_environment, "PYTHONMALLOC");
|
|
if (envvar) {
|
|
PyMemAllocatorName name;
|
|
if (_PyMem_GetAllocatorName(envvar, &name) < 0) {
|
|
return _PyStatus_ERR("PYTHONMALLOC: unknown allocator");
|
|
}
|
|
config->allocator = (int)name;
|
|
}
|
|
}
|
|
|
|
if (config->dev_mode && config->allocator == PYMEM_ALLOCATOR_NOT_SET) {
|
|
config->allocator = PYMEM_ALLOCATOR_DEBUG;
|
|
}
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
|
|
static PyStatus
|
|
preconfig_read(PyPreConfig *config, _PyPreCmdline *cmdline)
|
|
{
|
|
PyStatus status;
|
|
|
|
status = _PyPreCmdline_Read(cmdline, config);
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
return status;
|
|
}
|
|
|
|
precmdline_set_preconfig(cmdline, config);
|
|
|
|
/* legacy_windows_fs_encoding, coerce_c_locale, utf8_mode */
|
|
#ifdef MS_WINDOWS
|
|
_Py_get_env_flag(config->use_environment,
|
|
&config->legacy_windows_fs_encoding,
|
|
"PYTHONLEGACYWINDOWSFSENCODING");
|
|
#endif
|
|
|
|
preconfig_init_coerce_c_locale(config);
|
|
|
|
status = preconfig_init_utf8_mode(config, cmdline);
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
return status;
|
|
}
|
|
|
|
/* allocator */
|
|
status = preconfig_init_allocator(config);
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
return status;
|
|
}
|
|
|
|
assert(config->coerce_c_locale >= 0);
|
|
assert(config->coerce_c_locale_warn >= 0);
|
|
#ifdef MS_WINDOWS
|
|
assert(config->legacy_windows_fs_encoding >= 0);
|
|
#endif
|
|
assert(config->utf8_mode >= 0);
|
|
assert(config->isolated >= 0);
|
|
assert(config->use_environment >= 0);
|
|
assert(config->dev_mode >= 0);
|
|
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
|
|
/* Read the configuration from:
|
|
|
|
- command line arguments
|
|
- environment variables
|
|
- Py_xxx global configuration variables
|
|
- the LC_CTYPE locale */
|
|
PyStatus
|
|
_PyPreConfig_Read(PyPreConfig *config, const _PyArgv *args)
|
|
{
|
|
PyStatus status;
|
|
|
|
status = _PyRuntime_Initialize();
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
return status;
|
|
}
|
|
|
|
preconfig_get_global_vars(config);
|
|
|
|
/* Copy LC_CTYPE locale, since it's modified later */
|
|
const char *loc = setlocale(LC_CTYPE, NULL);
|
|
if (loc == NULL) {
|
|
return _PyStatus_ERR("failed to LC_CTYPE locale");
|
|
}
|
|
char *init_ctype_locale = _PyMem_RawStrdup(loc);
|
|
if (init_ctype_locale == NULL) {
|
|
return _PyStatus_NO_MEMORY();
|
|
}
|
|
|
|
/* Save the config to be able to restore it if encodings change */
|
|
PyPreConfig save_config;
|
|
|
|
status = _PyPreConfig_InitFromPreConfig(&save_config, config);
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
return status;
|
|
}
|
|
|
|
/* Set LC_CTYPE to the user preferred locale */
|
|
if (config->configure_locale) {
|
|
_Py_SetLocaleFromEnv(LC_CTYPE);
|
|
}
|
|
|
|
_PyPreCmdline cmdline = _PyPreCmdline_INIT;
|
|
int init_utf8_mode = Py_UTF8Mode;
|
|
#ifdef MS_WINDOWS
|
|
int init_legacy_encoding = Py_LegacyWindowsFSEncodingFlag;
|
|
#endif
|
|
|
|
if (args) {
|
|
status = _PyPreCmdline_SetArgv(&cmdline, args);
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
int locale_coerced = 0;
|
|
int loops = 0;
|
|
|
|
while (1) {
|
|
int utf8_mode = config->utf8_mode;
|
|
|
|
/* Watchdog to prevent an infinite loop */
|
|
loops++;
|
|
if (loops == 3) {
|
|
status = _PyStatus_ERR("Encoding changed twice while "
|
|
"reading the configuration");
|
|
goto done;
|
|
}
|
|
|
|
/* bpo-34207: Py_DecodeLocale() and Py_EncodeLocale() depend
|
|
on Py_UTF8Mode and Py_LegacyWindowsFSEncodingFlag. */
|
|
Py_UTF8Mode = config->utf8_mode;
|
|
#ifdef MS_WINDOWS
|
|
Py_LegacyWindowsFSEncodingFlag = config->legacy_windows_fs_encoding;
|
|
#endif
|
|
|
|
status = preconfig_read(config, &cmdline);
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
goto done;
|
|
}
|
|
|
|
/* The legacy C locale assumes ASCII as the default text encoding, which
|
|
* causes problems not only for the CPython runtime, but also other
|
|
* components like GNU readline.
|
|
*
|
|
* Accordingly, when the CLI detects it, it attempts to coerce it to a
|
|
* more capable UTF-8 based alternative.
|
|
*
|
|
* See the documentation of the PYTHONCOERCECLOCALE setting for more
|
|
* details.
|
|
*/
|
|
int encoding_changed = 0;
|
|
if (config->coerce_c_locale && !locale_coerced) {
|
|
locale_coerced = 1;
|
|
_Py_CoerceLegacyLocale(0);
|
|
encoding_changed = 1;
|
|
}
|
|
|
|
if (utf8_mode == -1) {
|
|
if (config->utf8_mode == 1) {
|
|
/* UTF-8 Mode enabled */
|
|
encoding_changed = 1;
|
|
}
|
|
}
|
|
else {
|
|
if (config->utf8_mode != utf8_mode) {
|
|
encoding_changed = 1;
|
|
}
|
|
}
|
|
|
|
if (!encoding_changed) {
|
|
break;
|
|
}
|
|
|
|
/* Reset the configuration before reading again the configuration,
|
|
just keep UTF-8 Mode value. */
|
|
int new_utf8_mode = config->utf8_mode;
|
|
int new_coerce_c_locale = config->coerce_c_locale;
|
|
preconfig_copy(config, &save_config);
|
|
config->utf8_mode = new_utf8_mode;
|
|
config->coerce_c_locale = new_coerce_c_locale;
|
|
|
|
/* The encoding changed: read again the configuration
|
|
with the new encoding */
|
|
}
|
|
status = _PyStatus_OK();
|
|
|
|
done:
|
|
if (init_ctype_locale != NULL) {
|
|
setlocale(LC_CTYPE, init_ctype_locale);
|
|
PyMem_RawFree(init_ctype_locale);
|
|
}
|
|
Py_UTF8Mode = init_utf8_mode ;
|
|
#ifdef MS_WINDOWS
|
|
Py_LegacyWindowsFSEncodingFlag = init_legacy_encoding;
|
|
#endif
|
|
_PyPreCmdline_Clear(&cmdline);
|
|
return status;
|
|
}
|
|
|
|
|
|
/* Write the pre-configuration:
|
|
|
|
- set the memory allocators
|
|
- set Py_xxx global configuration variables
|
|
- set the LC_CTYPE locale (coerce C locale, PEP 538) and set the UTF-8 mode
|
|
(PEP 540)
|
|
|
|
The applied configuration is written into _PyRuntime.preconfig.
|
|
If the C locale cannot be coerced, set coerce_c_locale to 0.
|
|
|
|
Do nothing if called after Py_Initialize(): ignore the new
|
|
pre-configuration. */
|
|
PyStatus
|
|
_PyPreConfig_Write(const PyPreConfig *src_config)
|
|
{
|
|
PyPreConfig config;
|
|
|
|
PyStatus status = _PyPreConfig_InitFromPreConfig(&config, src_config);
|
|
if (_PyStatus_EXCEPTION(status)) {
|
|
return status;
|
|
}
|
|
|
|
if (_PyRuntime.core_initialized) {
|
|
/* bpo-34008: Calling this functions after Py_Initialize() ignores
|
|
the new configuration. */
|
|
return _PyStatus_OK();
|
|
}
|
|
|
|
PyMemAllocatorName name = (PyMemAllocatorName)config.allocator;
|
|
if (name != PYMEM_ALLOCATOR_NOT_SET) {
|
|
if (_PyMem_SetupAllocators(name) < 0) {
|
|
return _PyStatus_ERR("Unknown PYTHONMALLOC allocator");
|
|
}
|
|
}
|
|
|
|
preconfig_set_global_vars(&config);
|
|
|
|
if (config.configure_locale) {
|
|
if (config.coerce_c_locale) {
|
|
if (!_Py_CoerceLegacyLocale(config.coerce_c_locale_warn)) {
|
|
/* C locale not coerced */
|
|
config.coerce_c_locale = 0;
|
|
}
|
|
}
|
|
|
|
/* Set LC_CTYPE to the user preferred locale */
|
|
_Py_SetLocaleFromEnv(LC_CTYPE);
|
|
}
|
|
|
|
/* Write the new pre-configuration into _PyRuntime */
|
|
preconfig_copy(&_PyRuntime.preconfig, &config);
|
|
|
|
return _PyStatus_OK();
|
|
}
|