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Copy pathmain.c
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2730 lines (2309 loc) · 71.7 KB
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/* Python interpreter main program */
#include "Python.h"
#include "osdefs.h"
#include "internal/import.h"
#include "internal/pygetopt.h"
#include "internal/pystate.h"
#include <locale.h>
#if defined(MS_WINDOWS) || defined(__CYGWIN__)
# include <windows.h>
# ifdef HAVE_IO_H
# include <io.h>
# endif
# ifdef HAVE_FCNTL_H
# include <fcntl.h>
# endif
#endif
#ifdef _MSC_VER
# include <crtdbg.h>
#endif
#ifdef __FreeBSD__
# include <fenv.h>
#endif
#if defined(MS_WINDOWS)
# define PYTHONHOMEHELP "<prefix>\\python{major}{minor}"
#else
# define PYTHONHOMEHELP "<prefix>/lib/pythonX.X"
#endif
#define COPYRIGHT \
"Type \"help\", \"copyright\", \"credits\" or \"license\" " \
"for more information."
#ifdef __cplusplus
extern "C" {
#endif
#define DECODE_LOCALE_ERR(NAME, LEN) \
(((LEN) == -2) \
? _Py_INIT_USER_ERR("cannot decode " NAME) \
: _Py_INIT_NO_MEMORY())
#define SET_DECODE_ERROR(NAME, LEN) \
do { \
if ((LEN) == (size_t)-2) { \
pymain->err = _Py_INIT_USER_ERR("cannot decode " NAME); \
} \
else { \
pymain->err = _Py_INIT_NO_MEMORY(); \
} \
} while (0)
#ifdef MS_WINDOWS
#define WCSTOK wcstok_s
#else
#define WCSTOK wcstok
#endif
/* For Py_GetArgcArgv(); set by main() */
static wchar_t **orig_argv = NULL;
static int orig_argc = 0;
/* command line options */
#define BASE_OPTS L"bBc:dEhiIJm:OqRsStuvVW:xX:?"
#define PROGRAM_OPTS BASE_OPTS
static const _PyOS_LongOption longoptions[] = {
{L"check-hash-based-pycs", 1, 0},
{NULL, 0, 0},
};
/* Short usage message (with %s for argv0) */
static const char usage_line[] =
"usage: %ls [option] ... [-c cmd | -m mod | file | -] [arg] ...\n";
/* Long usage message, split into parts < 512 bytes */
static const char usage_1[] = "\
Options and arguments (and corresponding environment variables):\n\
-b : issue warnings about str(bytes_instance), str(bytearray_instance)\n\
and comparing bytes/bytearray with str. (-bb: issue errors)\n\
-B : don't write .pyc files on import; also PYTHONDONTWRITEBYTECODE=x\n\
-c cmd : program passed in as string (terminates option list)\n\
-d : debug output from parser; also PYTHONDEBUG=x\n\
-E : ignore PYTHON* environment variables (such as PYTHONPATH)\n\
-h : print this help message and exit (also --help)\n\
";
static const char usage_2[] = "\
-i : inspect interactively after running script; forces a prompt even\n\
if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\
-I : isolate Python from the user's environment (implies -E and -s)\n\
-m mod : run library module as a script (terminates option list)\n\
-O : remove assert and __debug__-dependent statements; add .opt-1 before\n\
.pyc extension; also PYTHONOPTIMIZE=x\n\
-OO : do -O changes and also discard docstrings; add .opt-2 before\n\
.pyc extension\n\
-q : don't print version and copyright messages on interactive startup\n\
-s : don't add user site directory to sys.path; also PYTHONNOUSERSITE\n\
-S : don't imply 'import site' on initialization\n\
";
static const char usage_3[] = "\
-u : force the stdout and stderr streams to be unbuffered;\n\
this option has no effect on stdin; also PYTHONUNBUFFERED=x\n\
-v : verbose (trace import statements); also PYTHONVERBOSE=x\n\
can be supplied multiple times to increase verbosity\n\
-V : print the Python version number and exit (also --version)\n\
when given twice, print more information about the build\n\
-W arg : warning control; arg is action:message:category:module:lineno\n\
also PYTHONWARNINGS=arg\n\
-x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\
-X opt : set implementation-specific option\n\
--check-hash-based-pycs always|default|never:\n\
control how Python invalidates hash-based .pyc files\n\
";
static const char usage_4[] = "\
file : program read from script file\n\
- : program read from stdin (default; interactive mode if a tty)\n\
arg ...: arguments passed to program in sys.argv[1:]\n\n\
Other environment variables:\n\
PYTHONSTARTUP: file executed on interactive startup (no default)\n\
PYTHONPATH : '%lc'-separated list of directories prefixed to the\n\
default module search path. The result is sys.path.\n\
";
static const char usage_5[] =
"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"
" The default module search path uses %s.\n"
"PYTHONCASEOK : ignore case in 'import' statements (Windows).\n"
"PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n"
"PYTHONFAULTHANDLER: dump the Python traceback on fatal errors.\n";
static const char usage_6[] =
"PYTHONHASHSEED: if this variable is set to 'random', a random value is used\n"
" to seed the hashes of str, bytes and datetime objects. It can also be\n"
" set to an integer in the range [0,4294967295] to get hash values with a\n"
" predictable seed.\n"
"PYTHONMALLOC: set the Python memory allocators and/or install debug hooks\n"
" on Python memory allocators. Use PYTHONMALLOC=debug to install debug\n"
" hooks.\n"
"PYTHONCOERCECLOCALE: if this variable is set to 0, it disables the locale\n"
" coercion behavior. Use PYTHONCOERCECLOCALE=warn to request display of\n"
" locale coercion and locale compatibility warnings on stderr.\n"
"PYTHONDEVMODE: enable the development mode.\n"
"PYTHONPYCACHEPREFIX: root directory for bytecode cache (pyc) files.\n";
static void
pymain_usage(int error, const wchar_t* program)
{
FILE *f = error ? stderr : stdout;
fprintf(f, usage_line, program);
if (error)
fprintf(f, "Try `python -h' for more information.\n");
else {
fputs(usage_1, f);
fputs(usage_2, f);
fputs(usage_3, f);
fprintf(f, usage_4, (wint_t)DELIM);
fprintf(f, usage_5, (wint_t)DELIM, PYTHONHOMEHELP);
fputs(usage_6, f);
}
}
static const char*
config_get_env_var(const _PyCoreConfig *config, const char *name)
{
assert(config->ignore_environment >= 0);
if (config->ignore_environment) {
return NULL;
}
const char *var = getenv(name);
if (var && var[0] != '\0') {
return var;
}
else {
return NULL;
}
}
static int
config_get_env_var_dup(const _PyCoreConfig *config, wchar_t **dest, wchar_t *wname, char *name)
{
assert(config->ignore_environment >= 0);
if (config->ignore_environment) {
*dest = NULL;
return 0;
}
#ifdef MS_WINDOWS
const wchar_t *var = _wgetenv(wname);
if (!var || var[0] == '\0') {
*dest = NULL;
return 0;
}
wchar_t *copy = _PyMem_RawWcsdup(var);
if (copy == NULL) {
return -1;
}
*dest = copy;
#else
const char *var = getenv(name);
if (!var || var[0] == '\0') {
*dest = NULL;
return 0;
}
size_t len;
wchar_t *wvar = Py_DecodeLocale(var, &len);
if (!wvar) {
if (len == (size_t)-2) {
return -2;
}
else {
return -1;
}
}
*dest = wvar;
#endif
return 0;
}
static void
pymain_run_interactive_hook(void)
{
PyObject *sys, *hook, *result;
sys = PyImport_ImportModule("sys");
if (sys == NULL) {
goto error;
}
hook = PyObject_GetAttrString(sys, "__interactivehook__");
Py_DECREF(sys);
if (hook == NULL) {
PyErr_Clear();
return;
}
result = _PyObject_CallNoArg(hook);
Py_DECREF(hook);
if (result == NULL) {
goto error;
}
Py_DECREF(result);
return;
error:
PySys_WriteStderr("Failed calling sys.__interactivehook__\n");
PyErr_Print();
PyErr_Clear();
}
static int
pymain_run_module(const wchar_t *modname, int set_argv0)
{
PyObject *module, *runpy, *runmodule, *runargs, *result;
runpy = PyImport_ImportModule("runpy");
if (runpy == NULL) {
fprintf(stderr, "Could not import runpy module\n");
PyErr_Print();
return -1;
}
runmodule = PyObject_GetAttrString(runpy, "_run_module_as_main");
if (runmodule == NULL) {
fprintf(stderr, "Could not access runpy._run_module_as_main\n");
PyErr_Print();
Py_DECREF(runpy);
return -1;
}
module = PyUnicode_FromWideChar(modname, wcslen(modname));
if (module == NULL) {
fprintf(stderr, "Could not convert module name to unicode\n");
PyErr_Print();
Py_DECREF(runpy);
Py_DECREF(runmodule);
return -1;
}
runargs = Py_BuildValue("(Oi)", module, set_argv0);
if (runargs == NULL) {
fprintf(stderr,
"Could not create arguments for runpy._run_module_as_main\n");
PyErr_Print();
Py_DECREF(runpy);
Py_DECREF(runmodule);
Py_DECREF(module);
return -1;
}
result = PyObject_Call(runmodule, runargs, NULL);
if (result == NULL) {
PyErr_Print();
}
Py_DECREF(runpy);
Py_DECREF(runmodule);
Py_DECREF(module);
Py_DECREF(runargs);
if (result == NULL) {
return -1;
}
Py_DECREF(result);
return 0;
}
static PyObject *
pymain_get_importer(const wchar_t *filename)
{
PyObject *sys_path0 = NULL, *importer;
sys_path0 = PyUnicode_FromWideChar(filename, wcslen(filename));
if (sys_path0 == NULL) {
goto error;
}
importer = PyImport_GetImporter(sys_path0);
if (importer == NULL) {
goto error;
}
if (importer == Py_None) {
Py_DECREF(sys_path0);
Py_DECREF(importer);
return NULL;
}
Py_DECREF(importer);
return sys_path0;
error:
Py_XDECREF(sys_path0);
PySys_WriteStderr("Failed checking if argv[0] is an import path entry\n");
PyErr_Print();
PyErr_Clear();
return NULL;
}
static int
pymain_run_command(wchar_t *command, PyCompilerFlags *cf)
{
PyObject *unicode, *bytes;
int ret;
unicode = PyUnicode_FromWideChar(command, -1);
if (unicode == NULL) {
goto error;
}
bytes = PyUnicode_AsUTF8String(unicode);
Py_DECREF(unicode);
if (bytes == NULL) {
goto error;
}
ret = PyRun_SimpleStringFlags(PyBytes_AsString(bytes), cf);
Py_DECREF(bytes);
return (ret != 0);
error:
PySys_WriteStderr("Unable to decode the command from the command line:\n");
PyErr_Print();
return 1;
}
static int
pymain_run_file(FILE *fp, const wchar_t *filename, PyCompilerFlags *p_cf)
{
PyObject *unicode, *bytes = NULL;
const char *filename_str;
int run;
/* call pending calls like signal handlers (SIGINT) */
if (Py_MakePendingCalls() == -1) {
PyErr_Print();
return 1;
}
if (filename) {
unicode = PyUnicode_FromWideChar(filename, wcslen(filename));
if (unicode != NULL) {
bytes = PyUnicode_EncodeFSDefault(unicode);
Py_DECREF(unicode);
}
if (bytes != NULL) {
filename_str = PyBytes_AsString(bytes);
}
else {
PyErr_Clear();
filename_str = "<encoding error>";
}
}
else {
filename_str = "<stdin>";
}
run = PyRun_AnyFileExFlags(fp, filename_str, filename != NULL, p_cf);
Py_XDECREF(bytes);
return run != 0;
}
/* Main program */
typedef struct {
wchar_t **argv;
int nwarnoption; /* Number of -W command line options */
wchar_t **warnoptions; /* Command line -W options */
int nenv_warnoption; /* Number of PYTHONWARNINGS environment variables */
wchar_t **env_warnoptions; /* PYTHONWARNINGS environment variables */
int print_help; /* -h, -? options */
int print_version; /* -V option */
} _PyCmdline;
/* Structure used by Py_Main() to pass data to subfunctions */
typedef struct {
/* Input arguments */
int argc;
int use_bytes_argv;
char **bytes_argv;
wchar_t **wchar_argv;
/* Exit status or "exit code": result of pymain_main() */
int status;
/* Error message if a function failed */
_PyInitError err;
/* non-zero is stdin is a TTY or if -i option is used */
int stdin_is_interactive;
int skip_first_line; /* -x option */
wchar_t *filename; /* Trailing arg without -c or -m */
wchar_t *command; /* -c argument */
wchar_t *module; /* -m argument */
PyObject *main_importer_path;
} _PyMain;
#define _PyMain_INIT {.err = _Py_INIT_OK()}
/* Note: _PyMain_INIT sets other fields to 0/NULL */
/* Non-zero if filename, command (-c) or module (-m) is set
on the command line */
#define RUN_CODE(pymain) \
(pymain->command != NULL || pymain->filename != NULL \
|| pymain->module != NULL)
static void
clear_wstrlist(int len, wchar_t **list)
{
for (int i=0; i < len; i++) {
PyMem_RawFree(list[i]);
}
PyMem_RawFree(list);
}
static wchar_t**
copy_wstrlist(int len, wchar_t **list)
{
assert((len > 0 && list != NULL) || len == 0);
size_t size = len * sizeof(list[0]);
wchar_t **list_copy = PyMem_RawMalloc(size);
for (int i=0; i < len; i++) {
wchar_t* arg = _PyMem_RawWcsdup(list[i]);
if (arg == NULL) {
clear_wstrlist(i, list);
return NULL;
}
list_copy[i] = arg;
}
return list_copy;
}
static wchar_t*
pymain_wstrdup(_PyMain *pymain, const wchar_t *str)
{
wchar_t *str2 = _PyMem_RawWcsdup(str);
if (str2 == NULL) {
pymain->err = _Py_INIT_NO_MEMORY();
return NULL;
}
return str2;
}
static int
pymain_init_cmdline_argv(_PyMain *pymain, _PyCoreConfig *config,
_PyCmdline *cmdline)
{
assert(cmdline->argv == NULL);
if (pymain->use_bytes_argv) {
/* +1 for a the NULL terminator */
size_t size = sizeof(wchar_t*) * (pymain->argc + 1);
wchar_t** argv = (wchar_t **)PyMem_RawMalloc(size);
if (argv == NULL) {
pymain->err = _Py_INIT_NO_MEMORY();
return -1;
}
for (int i = 0; i < pymain->argc; i++) {
size_t len;
wchar_t *arg = Py_DecodeLocale(pymain->bytes_argv[i], &len);
if (arg == NULL) {
clear_wstrlist(i, argv);
pymain->err = DECODE_LOCALE_ERR("command line arguments",
(Py_ssize_t)len);
return -1;
}
argv[i] = arg;
}
argv[pymain->argc] = NULL;
cmdline->argv = argv;
}
else {
cmdline->argv = pymain->wchar_argv;
}
wchar_t *program;
if (pymain->argc >= 1 && cmdline->argv != NULL) {
program = cmdline->argv[0];
}
else {
program = L"";
}
config->program = pymain_wstrdup(pymain, program);
if (config->program == NULL) {
return -1;
}
return 0;
}
static void
_PyCoreConfig_GetGlobalConfig(_PyCoreConfig *config)
{
#define COPY_FLAG(ATTR, VALUE) \
if (config->ATTR == -1) { \
config->ATTR = VALUE; \
}
#define COPY_NOT_FLAG(ATTR, VALUE) \
if (config->ATTR == -1) { \
config->ATTR = !(VALUE); \
}
COPY_FLAG(ignore_environment, Py_IgnoreEnvironmentFlag);
COPY_FLAG(utf8_mode, Py_UTF8Mode);
COPY_FLAG(isolated, Py_IsolatedFlag);
COPY_FLAG(bytes_warning, Py_BytesWarningFlag);
COPY_FLAG(inspect, Py_InspectFlag);
COPY_FLAG(interactive, Py_InteractiveFlag);
COPY_FLAG(optimization_level, Py_OptimizeFlag);
COPY_FLAG(debug, Py_DebugFlag);
COPY_FLAG(verbose, Py_VerboseFlag);
COPY_FLAG(quiet, Py_QuietFlag);
COPY_FLAG(unbuffered_stdio, Py_UnbufferedStdioFlag);
#ifdef MS_WINDOWS
COPY_FLAG(legacy_windows_fs_encoding, Py_LegacyWindowsFSEncodingFlag);
COPY_FLAG(legacy_windows_stdio, Py_LegacyWindowsStdioFlag);
#endif
COPY_NOT_FLAG(site_import, Py_NoSiteFlag);
COPY_NOT_FLAG(write_bytecode, Py_DontWriteBytecodeFlag);
COPY_NOT_FLAG(user_site_directory, Py_NoUserSiteDirectory);
if (config->_check_hash_pycs_mode == NULL) {
config->_check_hash_pycs_mode = _Py_CheckHashBasedPycsMode;
}
#undef COPY_FLAG
#undef COPY_NOT_FLAG
}
/* Set Py_xxx global configuration variables from 'config' configuration. */
void
_PyCoreConfig_SetGlobalConfig(const _PyCoreConfig *config)
{
#define COPY_FLAG(ATTR, VAR) \
if (config->ATTR != -1) { \
VAR = config->ATTR; \
}
#define COPY_NOT_FLAG(ATTR, VAR) \
if (config->ATTR != -1) { \
VAR = !config->ATTR; \
}
COPY_FLAG(ignore_environment, Py_IgnoreEnvironmentFlag);
COPY_FLAG(utf8_mode, Py_UTF8Mode);
COPY_FLAG(isolated, Py_IsolatedFlag);
COPY_FLAG(bytes_warning, Py_BytesWarningFlag);
COPY_FLAG(inspect, Py_InspectFlag);
COPY_FLAG(interactive, Py_InteractiveFlag);
COPY_FLAG(optimization_level, Py_OptimizeFlag);
COPY_FLAG(debug, Py_DebugFlag);
COPY_FLAG(verbose, Py_VerboseFlag);
COPY_FLAG(quiet, Py_QuietFlag);
COPY_FLAG(unbuffered_stdio, Py_UnbufferedStdioFlag);
#ifdef MS_WINDOWS
COPY_FLAG(legacy_windows_fs_encoding, Py_LegacyWindowsFSEncodingFlag);
COPY_FLAG(legacy_windows_stdio, Py_LegacyWindowsStdioFlag);
#endif
COPY_NOT_FLAG(site_import, Py_NoSiteFlag);
COPY_NOT_FLAG(write_bytecode, Py_DontWriteBytecodeFlag);
COPY_NOT_FLAG(user_site_directory, Py_NoUserSiteDirectory);
if (config->_check_hash_pycs_mode != NULL) {
_Py_CheckHashBasedPycsMode = config->_check_hash_pycs_mode;
}
/* Random or non-zero hash seed */
Py_HashRandomizationFlag = (config->use_hash_seed == 0 ||
config->hash_seed != 0);
#undef COPY_FLAG
#undef COPY_NOT_FLAG
}
/* Free memory allocated in config, but don't clear all attributes */
void
_PyCoreConfig_Clear(_PyCoreConfig *config)
{
#define CLEAR(ATTR) \
do { \
PyMem_RawFree(ATTR); \
ATTR = NULL; \
} while (0)
#define CLEAR_WSTRLIST(LEN, LIST) \
do { \
clear_wstrlist(LEN, LIST); \
LEN = 0; \
LIST = NULL; \
} while (0)
CLEAR(config->pycache_prefix);
CLEAR(config->module_search_path_env);
CLEAR(config->home);
CLEAR(config->program_name);
CLEAR(config->program);
CLEAR_WSTRLIST(config->argc, config->argv);
config->argc = -1;
CLEAR_WSTRLIST(config->nwarnoption, config->warnoptions);
CLEAR_WSTRLIST(config->nxoption, config->xoptions);
CLEAR_WSTRLIST(config->nmodule_search_path, config->module_search_paths);
config->nmodule_search_path = -1;
CLEAR(config->executable);
CLEAR(config->prefix);
CLEAR(config->base_prefix);
CLEAR(config->exec_prefix);
#ifdef MS_WINDOWS
CLEAR(config->dll_path);
#endif
CLEAR(config->base_exec_prefix);
#undef CLEAR
#undef CLEAR_WSTRLIST
}
int
_PyCoreConfig_Copy(_PyCoreConfig *config, const _PyCoreConfig *config2)
{
_PyCoreConfig_Clear(config);
#define COPY_ATTR(ATTR) config->ATTR = config2->ATTR
#define COPY_STR_ATTR(ATTR) \
do { \
if (config2->ATTR != NULL) { \
config->ATTR = _PyMem_RawWcsdup(config2->ATTR); \
if (config->ATTR == NULL) { \
return -1; \
} \
} \
} while (0)
#define COPY_WSTRLIST(LEN, LIST) \
do { \
if (config2->LIST != NULL) { \
config->LIST = copy_wstrlist(config2->LEN, config2->LIST); \
if (config->LIST == NULL) { \
return -1; \
} \
} \
config->LEN = config2->LEN; \
} while (0)
COPY_ATTR(ignore_environment);
COPY_ATTR(use_hash_seed);
COPY_ATTR(hash_seed);
COPY_ATTR(_install_importlib);
COPY_ATTR(allocator);
COPY_ATTR(dev_mode);
COPY_ATTR(faulthandler);
COPY_ATTR(tracemalloc);
COPY_ATTR(import_time);
COPY_ATTR(show_ref_count);
COPY_ATTR(show_alloc_count);
COPY_ATTR(dump_refs);
COPY_ATTR(malloc_stats);
COPY_ATTR(utf8_mode);
COPY_STR_ATTR(pycache_prefix);
COPY_STR_ATTR(module_search_path_env);
COPY_STR_ATTR(home);
COPY_STR_ATTR(program_name);
COPY_STR_ATTR(program);
COPY_WSTRLIST(argc, argv);
COPY_WSTRLIST(nwarnoption, warnoptions);
COPY_WSTRLIST(nxoption, xoptions);
COPY_WSTRLIST(nmodule_search_path, module_search_paths);
COPY_STR_ATTR(executable);
COPY_STR_ATTR(prefix);
COPY_STR_ATTR(base_prefix);
COPY_STR_ATTR(exec_prefix);
#ifdef MS_WINDOWS
COPY_STR_ATTR(dll_path);
#endif
COPY_STR_ATTR(base_exec_prefix);
COPY_ATTR(isolated);
COPY_ATTR(site_import);
COPY_ATTR(bytes_warning);
COPY_ATTR(inspect);
COPY_ATTR(interactive);
COPY_ATTR(optimization_level);
COPY_ATTR(debug);
COPY_ATTR(write_bytecode);
COPY_ATTR(verbose);
COPY_ATTR(quiet);
COPY_ATTR(user_site_directory);
COPY_ATTR(unbuffered_stdio);
#ifdef MS_WINDOWS
COPY_ATTR(legacy_windows_fs_encoding);
COPY_ATTR(legacy_windows_stdio);
#endif
COPY_ATTR(_check_hash_pycs_mode);
#undef COPY_ATTR
#undef COPY_STR_ATTR
#undef COPY_WSTRLIST
return 0;
}
static void
pymain_clear_cmdline(_PyMain *pymain, _PyCmdline *cmdline)
{
PyMemAllocatorEx old_alloc;
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
clear_wstrlist(cmdline->nwarnoption, cmdline->warnoptions);
cmdline->nwarnoption = 0;
cmdline->warnoptions = NULL;
clear_wstrlist(cmdline->nenv_warnoption, cmdline->env_warnoptions);
cmdline->nenv_warnoption = 0;
cmdline->env_warnoptions = NULL;
if (pymain->use_bytes_argv && cmdline->argv != NULL) {
clear_wstrlist(pymain->argc, cmdline->argv);
}
cmdline->argv = NULL;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
}
static void
pymain_clear_pymain(_PyMain *pymain)
{
#define CLEAR(ATTR) \
do { \
PyMem_RawFree(ATTR); \
ATTR = NULL; \
} while (0)
CLEAR(pymain->filename);
CLEAR(pymain->command);
CLEAR(pymain->module);
#undef CLEAR
}
static void
pymain_clear_config(_PyCoreConfig *config)
{
/* Clear core config with the memory allocator
used by pymain_read_conf() */
PyMemAllocatorEx old_alloc;
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
_PyCoreConfig_Clear(config);
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
}
static void
pymain_free_python(_PyMain *pymain)
{
Py_CLEAR(pymain->main_importer_path);
#ifdef __INSURE__
/* Insure++ is a memory analysis tool that aids in discovering
* memory leaks and other memory problems. On Python exit, the
* interned string dictionaries are flagged as being in use at exit
* (which it is). Under normal circumstances, this is fine because
* the memory will be automatically reclaimed by the system. Under
* memory debugging, it's a huge source of useless noise, so we
* trade off slower shutdown for less distraction in the memory
* reports. -baw
*/
_Py_ReleaseInternedUnicodeStrings();
#endif /* __INSURE__ */
}
static void
pymain_free_raw(_PyMain *pymain)
{
_PyImport_Fini2();
/* Free global variables which cannot be freed in Py_Finalize():
configuration options set before Py_Initialize() which should
remain valid after Py_Finalize(), since
Py_Initialize()-Py_Finalize() can be called multiple times. */
_PyPathConfig_ClearGlobal();
/* Force the allocator used by pymain_read_conf() */
PyMemAllocatorEx old_alloc;
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
pymain_clear_pymain(pymain);
clear_wstrlist(orig_argc, orig_argv);
orig_argc = 0;
orig_argv = NULL;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
}
static void
pymain_free(_PyMain *pymain)
{
pymain_free_python(pymain);
pymain_free_raw(pymain);
}
static int
pymain_run_main_from_importer(_PyMain *pymain)
{
/* Assume sys_path0 has already been checked by pymain_get_importer(),
* so put it in sys.path[0] and import __main__ */
PyObject *sys_path = PySys_GetObject("path");
if (sys_path == NULL) {
PyErr_SetString(PyExc_RuntimeError, "unable to get sys.path");
goto error;
}
if (PyList_Insert(sys_path, 0, pymain->main_importer_path)) {
goto error;
}
int sts = pymain_run_module(L"__main__", 0);
return (sts != 0);
error:
Py_CLEAR(pymain->main_importer_path);
PyErr_Print();
return 1;
}
_PyInitError
_Py_wstrlist_append(int *len, wchar_t ***list, const wchar_t *str)
{
if (*len == INT_MAX) {
/* len+1 would overflow */
return _Py_INIT_NO_MEMORY();
}
wchar_t *str2 = _PyMem_RawWcsdup(str);
if (str2 == NULL) {
return _Py_INIT_NO_MEMORY();
}
size_t size = (*len + 1) * sizeof(list[0]);
wchar_t **list2 = (wchar_t **)PyMem_RawRealloc(*list, size);
if (list2 == NULL) {
PyMem_RawFree(str2);
return _Py_INIT_NO_MEMORY();
}
list2[*len] = str2;
*list = list2;
(*len)++;
return _Py_INIT_OK();
}
static int
pymain_wstrlist_append(_PyMain *pymain, int *len, wchar_t ***list, const wchar_t *str)
{
_PyInitError err = _Py_wstrlist_append(len, list, str);
if (_Py_INIT_FAILED(err)) {
pymain->err = err;
return -1;
}
return 0;
}
/* Parse the command line arguments
Return 0 on success.
Return 1 if parsing failed.
Set pymain->err and return -1 on other errors. */
static int
pymain_parse_cmdline_impl(_PyMain *pymain, _PyCoreConfig *config,
_PyCmdline *cmdline)
{
_PyOS_ResetGetOpt();
do {
int longindex = -1;
int c = _PyOS_GetOpt(pymain->argc, cmdline->argv, PROGRAM_OPTS,
longoptions, &longindex);
if (c == EOF) {
break;
}
if (c == 'c') {
/* -c is the last option; following arguments
that look like options are left for the
command to interpret. */
size_t len = wcslen(_PyOS_optarg) + 1 + 1;
wchar_t *command = PyMem_RawMalloc(sizeof(wchar_t) * len);
if (command == NULL) {
pymain->err = _Py_INIT_NO_MEMORY();
return -1;
}
memcpy(command, _PyOS_optarg, (len - 2) * sizeof(wchar_t));
command[len - 2] = '\n';
command[len - 1] = 0;
pymain->command = command;
break;
}
if (c == 'm') {
/* -m is the last option; following arguments
that look like options are left for the
module to interpret. */
pymain->module = pymain_wstrdup(pymain, _PyOS_optarg);
if (pymain->module == NULL) {
return -1;
}
break;
}
switch (c) {
case 0:
// Handle long option.
assert(longindex == 0); // Only one long option now.
if (!wcscmp(_PyOS_optarg, L"always")) {
config->_check_hash_pycs_mode = "always";
} else if (!wcscmp(_PyOS_optarg, L"never")) {
config->_check_hash_pycs_mode = "never";
} else if (!wcscmp(_PyOS_optarg, L"default")) {
config->_check_hash_pycs_mode = "default";
} else {
fprintf(stderr, "--check-hash-based-pycs must be one of "
"'default', 'always', or 'never'\n");
return 1;
}
break;
case 'b':
config->bytes_warning++;
break;
case 'd':
config->debug++;