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Improve Python and Linenoise

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This change reinvents all the GNU Readline features I discovered that I
couldn't live without, e.g. UTF-8, CTRL-R search and CTRL-Y yanking. It
now feels just as good in terms of user interface from the subconscious
workflow perspective. It's real nice to finally have an embeddable line
reader that's actually good with a 30 kb footprint and a bsd-2 license.

This change adds a directory to the examples folder, explaining how the
new Python compiler may be used.  Some of the bugs with Python binaries
have been addressed but overall it's still a work in progress.
This commit is contained in:
Justine Tunney 2021-09-11 22:30:37 -07:00
parent ad52387b74
commit 51904e2687
35 changed files with 3541 additions and 8587 deletions
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103
third_party/python/launch.c vendored Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Python 3 │
│ https://docs.python.org/3/license.html │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/x/x.h"
#include "third_party/python/Include/abstract.h"
#include "third_party/python/Include/import.h"
#include "third_party/python/Include/modsupport.h"
#include "third_party/python/Include/object.h"
#include "third_party/python/Include/pydebug.h"
#include "third_party/python/Include/pylifecycle.h"
#include "third_party/python/Include/pymem.h"
#include "third_party/python/Include/pythonrun.h"
#include "third_party/python/Include/sysmodule.h"
#include "third_party/python/Include/unicodeobject.h"
#include "third_party/python/Include/yoink.h"
/* clang-format off */
STATIC_YOINK("zip_uri_support");
PYTHON_YOINK("_bootlocale");
PYTHON_YOINK("_locale");
PYTHON_YOINK("encodings.aliases");
PYTHON_YOINK("encodings.latin_1");
PYTHON_YOINK("encodings.utf_8");
PYTHON_YOINK("launchpy");
extern char kLaunchPythonModuleName[]; /* generated by pyobj.com */
const struct _frozen *PyImport_FrozenModules = _PyImport_FrozenModules;
struct _inittab *PyImport_Inittab = _PyImport_Inittab;
int
LaunchPythonModule(const char *name)
{
PyObject *mod, *runpy, *runmodule, *runargs, *result;
if (!(runpy = PyImport_ImportModule("launchpy"))) {
PyErr_Print();
return 123;
}
if (!(runmodule = PyObject_GetAttrString(runpy, "run_module_as_main"))) {
PyErr_Print();
Py_DECREF(runpy);
return 122;
}
if (!(mod = PyUnicode_DecodeUTF8Stateful(name, strlen(name), 0, 0))) {
PyErr_Print();
Py_DECREF(runpy);
Py_DECREF(runmodule);
return 121;
}
if (!(runargs = Py_BuildValue("(O)", mod))) {
PyErr_Print();
Py_DECREF(runpy);
Py_DECREF(runmodule);
Py_DECREF(mod);
return 119;
}
if (!(result = PyObject_Call(runmodule, runargs, NULL))) {
PyErr_Print();
}
Py_DECREF(runpy);
Py_DECREF(runmodule);
Py_DECREF(mod);
Py_DECREF(runargs);
if (!result) return 118;
Py_DECREF(result);
return 0;
}
int
main(int argc, char *argv[])
{
size_t n;
int i, sts;
wchar_t *w;
PyObject *a, *s;
Py_FrozenFlag++;
Py_NoSiteFlag++;
/* Py_VerboseFlag++; */
Py_NoUserSiteDirectory++;
Py_IgnoreEnvironmentFlag++;
Py_DontWriteBytecodeFlag++;
#if defined(Py_DEBUG) || defined(USE_TRACEMALLOC)
_PyMem_SetupAllocators(Py_GETENV("PYTHONMALLOC"));
#else
_PyMem_SetupAllocators(0);
#endif
_PyRandom_Init();
Py_Initialize();
Py_LimitedPath();
if (!(a = PyList_New(argc))) return 127;
for (i = 0; i < argc; ++i) {
if (!(w = utf8toutf32(argv[i], -1, &n))) return 126;
if (!(s = PyUnicode_FromWideChar(w, n))) return 125;
PyList_SetItem(a, i, s);
free(w);
}
if (PySys_SetObject("argv", a)) return 124;
sts = LaunchPythonModule(kLaunchPythonModuleName);
if (Py_FinalizeEx() < 0) sts = 120;
return sts;
}