PythonExtra/py/modsys.c
Jim Mussared 0e8dfaf538 py/modsys: Add support for sys.executable.
Only intended to be used on Unix and other "OS" ports.  Matches CPython.
This should give the absolute path to the executing binary.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
Signed-off-by: Damien George <damien@micropython.org>
2022-10-11 18:10:26 +11:00

320 lines
11 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
* Copyright (c) 2014-2017 Paul Sokolovsky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/builtin.h"
#include "py/objlist.h"
#include "py/objmodule.h"
#include "py/objtuple.h"
#include "py/objstr.h"
#include "py/objint.h"
#include "py/objtype.h"
#include "py/stream.h"
#include "py/smallint.h"
#include "py/runtime.h"
#include "py/persistentcode.h"
#include "extmod/moduplatform.h"
#include "genhdr/mpversion.h"
#if MICROPY_PY_SYS_SETTRACE
#include "py/objmodule.h"
#include "py/profile.h"
#endif
#if MICROPY_PY_SYS
// defined per port; type of these is irrelevant, just need pointer
extern struct _mp_dummy_t mp_sys_stdin_obj;
extern struct _mp_dummy_t mp_sys_stdout_obj;
extern struct _mp_dummy_t mp_sys_stderr_obj;
#if MICROPY_PY_IO && MICROPY_PY_SYS_STDFILES
const mp_print_t mp_sys_stdout_print = {&mp_sys_stdout_obj, mp_stream_write_adaptor};
#endif
// version - Python language version that this implementation conforms to, as a string
STATIC const MP_DEFINE_STR_OBJ(mp_sys_version_obj, "3.4.0; " MICROPY_BANNER_NAME_AND_VERSION);
// version_info - Python language version that this implementation conforms to, as a tuple of ints
#define I(n) MP_OBJ_NEW_SMALL_INT(n)
// TODO: CPython is now at 5-element array, but save 2 els so far...
STATIC const mp_obj_tuple_t mp_sys_version_info_obj = {{&mp_type_tuple}, 3, {I(3), I(4), I(0)}};
// sys.implementation object
// this holds the MicroPython version
STATIC const mp_obj_tuple_t mp_sys_implementation_version_info_obj = {
{&mp_type_tuple},
3,
{ I(MICROPY_VERSION_MAJOR), I(MICROPY_VERSION_MINOR), I(MICROPY_VERSION_MICRO) }
};
STATIC const MP_DEFINE_STR_OBJ(mp_sys_implementation_machine_obj, MICROPY_BANNER_MACHINE);
#if MICROPY_PERSISTENT_CODE_LOAD
#define SYS_IMPLEMENTATION_ELEMS \
MP_ROM_QSTR(MP_QSTR_micropython), \
MP_ROM_PTR(&mp_sys_implementation_version_info_obj), \
MP_ROM_PTR(&mp_sys_implementation_machine_obj), \
MP_ROM_INT(MPY_FILE_HEADER_INT)
#else
#define SYS_IMPLEMENTATION_ELEMS \
MP_ROM_QSTR(MP_QSTR_micropython), \
MP_ROM_PTR(&mp_sys_implementation_version_info_obj), \
MP_ROM_PTR(&mp_sys_implementation_machine_obj)
#endif
#if MICROPY_PY_ATTRTUPLE
STATIC const qstr impl_fields[] = {
MP_QSTR_name,
MP_QSTR_version,
MP_QSTR__machine,
#if MICROPY_PERSISTENT_CODE_LOAD
MP_QSTR__mpy,
#endif
};
STATIC MP_DEFINE_ATTRTUPLE(
mp_sys_implementation_obj,
impl_fields,
3 + MICROPY_PERSISTENT_CODE_LOAD,
SYS_IMPLEMENTATION_ELEMS
);
#else
STATIC const mp_rom_obj_tuple_t mp_sys_implementation_obj = {
{&mp_type_tuple},
3 + MICROPY_PERSISTENT_CODE_LOAD,
{
SYS_IMPLEMENTATION_ELEMS
}
};
#endif
#undef I
#ifdef MICROPY_PY_SYS_PLATFORM
// platform - the platform that MicroPython is running on
STATIC const MP_DEFINE_STR_OBJ(mp_sys_platform_obj, MICROPY_PY_SYS_PLATFORM);
#endif
#ifdef MICROPY_PY_SYS_EXECUTABLE
// executable - the path to the micropython binary
// This object is non-const and is populated at startup in main()
MP_DEFINE_STR_OBJ(mp_sys_executable_obj, "");
#endif
// exit([retval]): raise SystemExit, with optional argument given to the exception
STATIC mp_obj_t mp_sys_exit(size_t n_args, const mp_obj_t *args) {
if (n_args == 0) {
mp_raise_type(&mp_type_SystemExit);
} else {
mp_raise_type_arg(&mp_type_SystemExit, args[0]);
}
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_sys_exit_obj, 0, 1, mp_sys_exit);
STATIC mp_obj_t mp_sys_print_exception(size_t n_args, const mp_obj_t *args) {
#if MICROPY_PY_IO && MICROPY_PY_SYS_STDFILES
void *stream_obj = &mp_sys_stdout_obj;
if (n_args > 1) {
mp_get_stream_raise(args[1], MP_STREAM_OP_WRITE);
stream_obj = MP_OBJ_TO_PTR(args[1]);
}
mp_print_t print = {stream_obj, mp_stream_write_adaptor};
mp_obj_print_exception(&print, args[0]);
#else
(void)n_args;
mp_obj_print_exception(&mp_plat_print, args[0]);
#endif
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_sys_print_exception_obj, 1, 2, mp_sys_print_exception);
#if MICROPY_PY_SYS_EXC_INFO
STATIC mp_obj_t mp_sys_exc_info(void) {
mp_obj_t cur_exc = MP_OBJ_FROM_PTR(MP_STATE_VM(cur_exception));
mp_obj_tuple_t *t = MP_OBJ_TO_PTR(mp_obj_new_tuple(3, NULL));
if (cur_exc == MP_OBJ_NULL) {
t->items[0] = mp_const_none;
t->items[1] = mp_const_none;
t->items[2] = mp_const_none;
return MP_OBJ_FROM_PTR(t);
}
t->items[0] = MP_OBJ_FROM_PTR(mp_obj_get_type(cur_exc));
t->items[1] = cur_exc;
t->items[2] = mp_const_none;
return MP_OBJ_FROM_PTR(t);
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_sys_exc_info_obj, mp_sys_exc_info);
#endif
#if MICROPY_PY_SYS_GETSIZEOF
STATIC mp_obj_t mp_sys_getsizeof(mp_obj_t obj) {
return mp_unary_op(MP_UNARY_OP_SIZEOF, obj);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_sys_getsizeof_obj, mp_sys_getsizeof);
#endif
#if MICROPY_PY_SYS_ATEXIT
// atexit(callback): Callback is called when sys.exit is called.
STATIC mp_obj_t mp_sys_atexit(mp_obj_t obj) {
mp_obj_t old = MP_STATE_VM(sys_exitfunc);
MP_STATE_VM(sys_exitfunc) = obj;
return old;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(mp_sys_atexit_obj, mp_sys_atexit);
#endif
#if MICROPY_PY_SYS_SETTRACE
// settrace(tracefunc): Set the system's trace function.
STATIC mp_obj_t mp_sys_settrace(mp_obj_t obj) {
return mp_prof_settrace(obj);
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_sys_settrace_obj, mp_sys_settrace);
#endif // MICROPY_PY_SYS_SETTRACE
#if MICROPY_PY_SYS_ATTR_DELEGATION
STATIC const uint16_t sys_mutable_keys[] = {
#if MICROPY_PY_SYS_PS1_PS2
MP_QSTR_ps1,
MP_QSTR_ps2,
#endif
#if MICROPY_PY_SYS_TRACEBACKLIMIT
MP_QSTR_tracebacklimit,
#endif
MP_QSTRnull,
};
STATIC void mp_module_sys_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
MP_STATIC_ASSERT(MP_ARRAY_SIZE(sys_mutable_keys) == MP_SYS_MUTABLE_NUM + 1);
MP_STATIC_ASSERT(MP_ARRAY_SIZE(MP_STATE_VM(sys_mutable)) == MP_SYS_MUTABLE_NUM);
mp_module_generic_attr(attr, dest, sys_mutable_keys, MP_STATE_VM(sys_mutable));
}
#endif
STATIC const mp_rom_map_elem_t mp_module_sys_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_sys) },
{ MP_ROM_QSTR(MP_QSTR_path), MP_ROM_PTR(&MP_STATE_VM(mp_sys_path_obj)) },
{ MP_ROM_QSTR(MP_QSTR_argv), MP_ROM_PTR(&MP_STATE_VM(mp_sys_argv_obj)) },
{ MP_ROM_QSTR(MP_QSTR_version), MP_ROM_PTR(&mp_sys_version_obj) },
{ MP_ROM_QSTR(MP_QSTR_version_info), MP_ROM_PTR(&mp_sys_version_info_obj) },
{ MP_ROM_QSTR(MP_QSTR_implementation), MP_ROM_PTR(&mp_sys_implementation_obj) },
#ifdef MICROPY_PY_SYS_PLATFORM
{ MP_ROM_QSTR(MP_QSTR_platform), MP_ROM_PTR(&mp_sys_platform_obj) },
#endif
#if MP_ENDIANNESS_LITTLE
{ MP_ROM_QSTR(MP_QSTR_byteorder), MP_ROM_QSTR(MP_QSTR_little) },
#else
{ MP_ROM_QSTR(MP_QSTR_byteorder), MP_ROM_QSTR(MP_QSTR_big) },
#endif
#if MICROPY_PY_SYS_MAXSIZE
#if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_NONE
// Maximum mp_int_t value is not representable as small int, so we have
// little choice but to use MP_SMALL_INT_MAX. Apps also should be careful
// to not try to compare sys.maxsize to some literal number (as this
// number might not fit in available int size), but instead count number
// of "one" bits in sys.maxsize.
{ MP_ROM_QSTR(MP_QSTR_maxsize), MP_ROM_INT(MP_SMALL_INT_MAX) },
#else
{ MP_ROM_QSTR(MP_QSTR_maxsize), MP_ROM_PTR(&mp_sys_maxsize_obj) },
#endif
#endif
#if MICROPY_PY_SYS_EXIT
{ MP_ROM_QSTR(MP_QSTR_exit), MP_ROM_PTR(&mp_sys_exit_obj) },
#endif
#if MICROPY_PY_SYS_SETTRACE
{ MP_ROM_QSTR(MP_QSTR_settrace), MP_ROM_PTR(&mp_sys_settrace_obj) },
#endif
#if MICROPY_PY_SYS_STDFILES
{ MP_ROM_QSTR(MP_QSTR_stdin), MP_ROM_PTR(&mp_sys_stdin_obj) },
{ MP_ROM_QSTR(MP_QSTR_stdout), MP_ROM_PTR(&mp_sys_stdout_obj) },
{ MP_ROM_QSTR(MP_QSTR_stderr), MP_ROM_PTR(&mp_sys_stderr_obj) },
#endif
#if MICROPY_PY_SYS_MODULES
{ MP_ROM_QSTR(MP_QSTR_modules), MP_ROM_PTR(&MP_STATE_VM(mp_loaded_modules_dict)) },
#endif
#if MICROPY_PY_SYS_EXC_INFO
{ MP_ROM_QSTR(MP_QSTR_exc_info), MP_ROM_PTR(&mp_sys_exc_info_obj) },
#endif
#if MICROPY_PY_SYS_GETSIZEOF
{ MP_ROM_QSTR(MP_QSTR_getsizeof), MP_ROM_PTR(&mp_sys_getsizeof_obj) },
#endif
#if MICROPY_PY_SYS_EXECUTABLE
{ MP_ROM_QSTR(MP_QSTR_executable), MP_ROM_PTR(&mp_sys_executable_obj) },
#endif
/*
* Extensions to CPython
*/
{ MP_ROM_QSTR(MP_QSTR_print_exception), MP_ROM_PTR(&mp_sys_print_exception_obj) },
#if MICROPY_PY_SYS_ATEXIT
{ MP_ROM_QSTR(MP_QSTR_atexit), MP_ROM_PTR(&mp_sys_atexit_obj) },
#endif
#if MICROPY_PY_SYS_ATTR_DELEGATION
// Delegation of attr lookup.
MP_MODULE_ATTR_DELEGATION_ENTRY(&mp_module_sys_attr),
#endif
};
STATIC MP_DEFINE_CONST_DICT(mp_module_sys_globals, mp_module_sys_globals_table);
const mp_obj_module_t mp_module_sys = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t *)&mp_module_sys_globals,
};
MP_REGISTER_MODULE(MP_QSTR_usys, mp_module_sys);
// If MICROPY_PY_SYS_PATH_ARGV_DEFAULTS is not enabled then these two lists
// must be initialised after the call to mp_init.
MP_REGISTER_ROOT_POINTER(mp_obj_list_t mp_sys_path_obj);
MP_REGISTER_ROOT_POINTER(mp_obj_list_t mp_sys_argv_obj);
#if MICROPY_PY_SYS_EXC_INFO
// current exception being handled, for sys.exc_info()
MP_REGISTER_ROOT_POINTER(mp_obj_base_t * cur_exception);
#endif
#if MICROPY_PY_SYS_ATEXIT
// exposed through sys.atexit function
MP_REGISTER_ROOT_POINTER(mp_obj_t sys_exitfunc);
#endif
#if MICROPY_PY_SYS_ATTR_DELEGATION
// Contains mutable sys attributes.
MP_REGISTER_ROOT_POINTER(mp_obj_t sys_mutable[MP_SYS_MUTABLE_NUM]);
#endif
#endif // MICROPY_PY_SYS