bpo-36763: Add _PyCoreConfig.parse_argv (GH-13361)
* _PyCoreConfig_Read() doesn't parse nor update argv if parse_argv is 0. * Move path configuration fields in _PyCoreConfig. * Add an unit test for parse_argv=0. * Remove unused "done": label in _Py_RunMain().
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@ -207,32 +207,26 @@ typedef struct {
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wchar_t *filesystem_errors;
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wchar_t *pycache_prefix; /* PYTHONPYCACHEPREFIX, -X pycache_prefix=PATH */
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int parse_argv; /* Parse argv command line arguments? */
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/* Command line arguments (sys.argv).
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By default, Python command line arguments are parsed and then stripped
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from argv. Set parse_argv to 0 to avoid that.
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If argv is empty, an empty string is added to ensure that sys.argv
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always exists and is never empty. */
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_PyWstrList argv;
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/* Program: argv[0] or "".
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Used to display Python usage if parsing command line arguments fails.
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Used to initialize the default value of program_name */
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wchar_t *program;
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wchar_t *program_name; /* Program name, see also Py_GetProgramName() */
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_PyWstrList argv; /* Command line arguments */
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wchar_t *program; /* argv[0] or "" */
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_PyWstrList xoptions; /* Command line -X options */
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_PyWstrList warnoptions; /* Warnings options */
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/* Path configuration inputs */
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wchar_t *module_search_path_env; /* PYTHONPATH environment variable */
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wchar_t *home; /* PYTHONHOME environment variable,
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see also Py_SetPythonHome(). */
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/* Path configuration outputs */
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int use_module_search_paths; /* If non-zero, use module_search_paths */
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_PyWstrList module_search_paths; /* sys.path paths. Computed if
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use_module_search_paths is equal
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to zero. */
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wchar_t *executable; /* sys.executable */
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wchar_t *prefix; /* sys.prefix */
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wchar_t *base_prefix; /* sys.base_prefix */
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wchar_t *exec_prefix; /* sys.exec_prefix */
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wchar_t *base_exec_prefix; /* sys.base_exec_prefix */
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#ifdef MS_WINDOWS
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wchar_t *dll_path; /* Windows DLL path */
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#endif
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/* If equal to zero, disable the import of the module site and the
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site-dependent manipulations of sys.path that it entails. Also disable
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these manipulations if site is explicitly imported later (call
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@ -350,6 +344,28 @@ typedef struct {
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int legacy_windows_stdio;
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#endif
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/* --- Path configuration inputs ------------ */
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wchar_t *module_search_path_env; /* PYTHONPATH environment variable */
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wchar_t *home; /* PYTHONHOME environment variable,
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see also Py_SetPythonHome(). */
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/* --- Path configuration outputs ----------- */
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int use_module_search_paths; /* If non-zero, use module_search_paths */
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_PyWstrList module_search_paths; /* sys.path paths. Computed if
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use_module_search_paths is equal
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to zero. */
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wchar_t *executable; /* sys.executable */
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wchar_t *prefix; /* sys.prefix */
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wchar_t *base_prefix; /* sys.base_prefix */
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wchar_t *exec_prefix; /* sys.exec_prefix */
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wchar_t *base_exec_prefix; /* sys.base_exec_prefix */
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#ifdef MS_WINDOWS
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wchar_t *dll_path; /* Windows DLL path */
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#endif
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/* --- Parameter only used by Py_Main() ---------- */
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/* Skip the first line of the source ('run_filename' parameter), allowing use of non-Unix forms of
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@ -408,6 +424,7 @@ typedef struct {
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.faulthandler = -1, \
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.tracemalloc = -1, \
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.use_module_search_paths = 0, \
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.parse_argv = 1, \
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.site_import = -1, \
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.bytes_warning = -1, \
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.inspect = -1, \
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@ -304,6 +304,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
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'pycache_prefix': None,
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'program_name': GET_DEFAULT_CONFIG,
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'parse_argv': 1,
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'argv': [""],
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'program': '',
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@ -700,6 +701,14 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
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}
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self.check_config("run_main_config", core_config, preconfig)
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def test_init_dont_parse_argv(self):
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core_config = {
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'argv': ['-v', '-c', 'arg1', '-W', 'arg2'],
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'parse_argv': 0,
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'program': 'program',
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}
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self.check_config("init_dont_parse_argv", core_config, {})
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if __name__ == "__main__":
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unittest.main()
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@ -574,13 +574,13 @@ _Py_RunMain(void)
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int exitcode = 0;
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pymain_run_python(&exitcode);
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if (Py_FinalizeEx() < 0) {
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/* Value unlikely to be confused with a non-error exit status or
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other special meaning */
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exitcode = 120;
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}
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done:
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pymain_free();
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if (_Py_UnhandledKeyboardInterrupt) {
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@ -511,6 +511,37 @@ static int test_init_from_config(void)
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}
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static int test_init_dont_parse_argv(void)
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{
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_PyInitError err;
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_PyCoreConfig config = _PyCoreConfig_INIT;
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static wchar_t* argv[] = {
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L"-v",
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L"-c",
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L"arg1",
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L"-W",
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L"arg2",
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};
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config.program = L"program";
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config.program_name = L"./_testembed";
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config.argv.length = Py_ARRAY_LENGTH(argv);
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config.argv.items = argv;
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config.parse_argv = 0;
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err = _Py_InitializeFromConfig(&config);
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if (_Py_INIT_FAILED(err)) {
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_Py_ExitInitError(err);
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}
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dump_config();
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Py_Finalize();
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return 0;
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}
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static void test_init_env_putenvs(void)
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{
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putenv("PYTHONHASHSEED=42");
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@ -797,6 +828,7 @@ static struct TestCase TestCases[] = {
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{ "init_default_config", test_init_default_config },
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{ "init_global_config", test_init_global_config },
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{ "init_from_config", test_init_from_config },
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{ "init_dont_parse_argv", test_init_dont_parse_argv },
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{ "init_env", test_init_env },
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{ "init_env_dev_mode", test_init_env_dev_mode },
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{ "init_env_dev_mode_alloc", test_init_env_dev_mode_alloc },
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@ -628,6 +628,7 @@ _PyCoreConfig_Copy(_PyCoreConfig *config, const _PyCoreConfig *config2)
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COPY_WSTR_ATTR(program_name);
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COPY_WSTR_ATTR(program);
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COPY_ATTR(parse_argv);
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COPY_WSTRLIST(argv);
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COPY_WSTRLIST(warnoptions);
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COPY_WSTRLIST(xoptions);
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@ -727,6 +728,7 @@ _PyCoreConfig_AsDict(const _PyCoreConfig *config)
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SET_ITEM_WSTR(filesystem_errors);
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SET_ITEM_WSTR(pycache_prefix);
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SET_ITEM_WSTR(program_name);
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SET_ITEM_INT(parse_argv);
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SET_ITEM_WSTRLIST(argv);
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SET_ITEM_WSTR(program);
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SET_ITEM_WSTRLIST(xoptions);
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@ -1490,6 +1492,8 @@ config_read(_PyCoreConfig *config, _PyPreCmdline *cmdline)
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}
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if (config->isolated > 0) {
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/* _PyPreCmdline_Read() sets use_environment to 0 if isolated is set,
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_PyPreCmdline_SetCoreConfig() overrides config->use_environment. */
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config->user_site_directory = 0;
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}
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@ -1660,7 +1664,7 @@ config_usage(int error, const wchar_t* program)
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/* Parse the command line arguments */
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static _PyInitError
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config_parse_cmdline(_PyCoreConfig *config, _PyPreCmdline *precmdline,
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_PyWstrList *warnoptions)
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_PyWstrList *warnoptions, int *opt_index)
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{
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_PyInitError err;
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const _PyWstrList *argv = &precmdline->argv;
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@ -1833,8 +1837,7 @@ config_parse_cmdline(_PyCoreConfig *config, _PyPreCmdline *precmdline,
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_PyOS_optind--;
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}
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/* -c and -m options are exclusive */
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assert(!(config->run_command != NULL && config->run_module != NULL));
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*opt_index = _PyOS_optind;
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return _Py_INIT_OK();
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}
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@ -1978,13 +1981,14 @@ config_init_warnoptions(_PyCoreConfig *config,
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static _PyInitError
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config_init_argv(_PyCoreConfig *config, const _PyPreCmdline *cmdline)
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config_update_argv(_PyCoreConfig *config, const _PyPreCmdline *cmdline,
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int opt_index)
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{
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const _PyWstrList *cmdline_argv = &cmdline->argv;
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_PyWstrList config_argv = _PyWstrList_INIT;
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/* Copy argv to be able to modify it (to force -c/-m) */
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if (cmdline_argv->length <= _PyOS_optind) {
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if (cmdline_argv->length <= opt_index) {
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/* Ensure at least one (empty) argument is seen */
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if (_PyWstrList_Append(&config_argv, L"") < 0) {
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return _Py_INIT_NO_MEMORY();
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@ -1992,8 +1996,8 @@ config_init_argv(_PyCoreConfig *config, const _PyPreCmdline *cmdline)
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}
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else {
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_PyWstrList slice;
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slice.length = cmdline_argv->length - _PyOS_optind;
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slice.items = &cmdline_argv->items[_PyOS_optind];
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slice.length = cmdline_argv->length - opt_index;
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slice.items = &cmdline_argv->items[opt_index];
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if (_PyWstrList_Copy(&config_argv, &slice) < 0) {
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return _Py_INIT_NO_MEMORY();
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}
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@ -2058,14 +2062,22 @@ config_read_cmdline(_PyCoreConfig *config, _PyPreCmdline *precmdline)
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_PyWstrList cmdline_warnoptions = _PyWstrList_INIT;
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_PyWstrList env_warnoptions = _PyWstrList_INIT;
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err = config_parse_cmdline(config, precmdline, &cmdline_warnoptions);
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if (_Py_INIT_FAILED(err)) {
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goto done;
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if (config->parse_argv < 0) {
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config->parse_argv = 1;
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}
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err = config_init_argv(config, precmdline);
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if (_Py_INIT_FAILED(err)) {
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goto done;
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if (config->parse_argv) {
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int opt_index;
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err = config_parse_cmdline(config, precmdline, &cmdline_warnoptions,
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&opt_index);
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if (_Py_INIT_FAILED(err)) {
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goto done;
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}
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err = config_update_argv(config, precmdline, opt_index);
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if (_Py_INIT_FAILED(err)) {
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goto done;
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}
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}
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err = config_read(config, precmdline);
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@ -2212,6 +2224,7 @@ _PyCoreConfig_Read(_PyCoreConfig *config)
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assert(config->verbose >= 0);
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assert(config->quiet >= 0);
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assert(config->user_site_directory >= 0);
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assert(config->parse_argv >= 0);
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assert(config->buffered_stdio >= 0);
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assert(config->program_name != NULL);
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assert(config->program != NULL);
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#ifdef MS_WINDOWS
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assert(config->legacy_windows_stdio >= 0);
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#endif
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/* -c and -m options are exclusive */
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assert(!(config->run_command != NULL && config->run_module != NULL));
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assert(config->check_hash_pycs_mode != NULL);
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assert(config->_install_importlib >= 0);
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assert(config->_frozen >= 0);
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