diff options
Diffstat (limited to 'Python/sysmodule.c')
| -rw-r--r-- | Python/sysmodule.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/Python/sysmodule.c b/Python/sysmodule.c index ac44b80..d5a62fc 100644 --- a/Python/sysmodule.c +++ b/Python/sysmodule.c @@ -48,6 +48,10 @@ extern void *PyWin_DLLhModule; extern const char *PyWin_DLLVersionString; #endif +#ifdef __EMSCRIPTEN__ +#include <emscripten.h> +#endif + /*[clinic input] module sys [clinic start generated code]*/ @@ -2686,6 +2690,107 @@ error: return NULL; } +#ifdef __EMSCRIPTEN__ + +PyDoc_STRVAR(emscripten_info__doc__, +"sys._emscripten_info\n\ +\n\ +WebAssembly Emscripten platform information."); + +static PyTypeObject *EmscriptenInfoType; + +static PyStructSequence_Field emscripten_info_fields[] = { + {"emscripten_version", "Emscripten version (major, minor, micro)"}, + {"runtime", "Runtime (Node.JS version, browser user agent)"}, + {"pthreads", "pthread support"}, + {"shared_memory", "shared memory support"}, + {0} +}; + +static PyStructSequence_Desc emscripten_info_desc = { + "sys._emscripten_info", /* name */ + emscripten_info__doc__ , /* doc */ + emscripten_info_fields, /* fields */ + 4 +}; + +EM_JS(char *, _Py_emscripten_runtime, (void), { + var info; + if (typeof navigator == 'object') { + info = navigator.userAgent; + } else if (typeof process == 'object') { + info = "Node.js ".concat(process.version) + } else { + info = "UNKNOWN" + } + var len = lengthBytesUTF8(info) + 1; + var res = _malloc(len); + stringToUTF8(info, res, len); + return res; +}); + +static PyObject * +make_emscripten_info(void) +{ + PyObject *emscripten_info = NULL; + PyObject *version = NULL; + char *ua; + int pos = 0; + + emscripten_info = PyStructSequence_New(EmscriptenInfoType); + if (emscripten_info == NULL) { + return NULL; + } + + version = Py_BuildValue("(iii)", + __EMSCRIPTEN_major__, __EMSCRIPTEN_minor__, __EMSCRIPTEN_tiny__); + if (version == NULL) { + goto error; + } + PyStructSequence_SET_ITEM(emscripten_info, pos++, version); + + ua = _Py_emscripten_runtime(); + if (ua != NULL) { + PyObject *oua = PyUnicode_DecodeUTF8(ua, strlen(ua), "strict"); + free(ua); + if (oua == NULL) { + goto error; + } + PyStructSequence_SET_ITEM(emscripten_info, pos++, oua); + } else { + Py_INCREF(Py_None); + PyStructSequence_SET_ITEM(emscripten_info, pos++, Py_None); + } + +#define SetBoolItem(flag) \ + PyStructSequence_SET_ITEM(emscripten_info, pos++, PyBool_FromLong(flag)) + +#ifdef __EMSCRIPTEN_PTHREADS__ + SetBoolItem(1); +#else + SetBoolItem(0); +#endif + +#ifdef __EMSCRIPTEN_SHARED_MEMORY__ + SetBoolItem(1); +#else + SetBoolItem(0); +#endif + +#undef SetBoolItem + + if (PyErr_Occurred()) { + goto error; + } + return emscripten_info; + + error: + Py_CLEAR(emscripten_info); + return NULL; +} + +#endif // __EMSCRIPTEN__ + static struct PyModuleDef sysmodule = { PyModuleDef_HEAD_INIT, "sys", @@ -2821,6 +2926,16 @@ _PySys_InitCore(PyThreadState *tstate, PyObject *sysdict) } } +#ifdef __EMSCRIPTEN__ + if (EmscriptenInfoType == NULL) { + EmscriptenInfoType = PyStructSequence_NewType(&emscripten_info_desc); + if (EmscriptenInfoType == NULL) { + goto type_init_failed; + } + } + SET_SYS("_emscripten_info", make_emscripten_info()); +#endif + /* adding sys.path_hooks and sys.path_importer_cache */ SET_SYS("meta_path", PyList_New(0)); SET_SYS("path_importer_cache", PyDict_New()); @@ -3066,6 +3181,9 @@ _PySys_Fini(PyInterpreterState *interp) #endif _PyStructSequence_FiniType(&Hash_InfoType); _PyStructSequence_FiniType(&AsyncGenHooksType); +#ifdef __EMSCRIPTEN__ + Py_CLEAR(EmscriptenInfoType); +#endif } } |