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author | Miodrag Milanovic <mmicko@gmail.com> | 2018-06-05 21:03:06 +0200 |
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committer | Miodrag Milanovic <mmicko@gmail.com> | 2018-06-05 21:03:06 +0200 |
commit | 7cb42f4368e873e5930cf84bc2494a8e8172a046 (patch) | |
tree | ed773278240546b1b525c066b95a4e69150aabf1 /gui/emb.cc | |
parent | bd08f9e698269764d9e06052470d4a699f69f951 (diff) | |
download | nextpnr-7cb42f4368e873e5930cf84bc2494a8e8172a046.tar.gz nextpnr-7cb42f4368e873e5930cf84bc2494a8e8172a046.tar.bz2 nextpnr-7cb42f4368e873e5930cf84bc2494a8e8172a046.zip |
Initial GUI work
Diffstat (limited to 'gui/emb.cc')
-rw-r--r-- | gui/emb.cc | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/gui/emb.cc b/gui/emb.cc new file mode 100644 index 00000000..59915111 --- /dev/null +++ b/gui/emb.cc @@ -0,0 +1,150 @@ +// +// Copyright (C) 2011 Mateusz Loskot <mateusz@loskot.net> +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt) +// +// Blog article: http://mateusz.loskot.net/?p=2819 + +#include <functional> +#include <iostream> +#include <string> +#include <Python.h> +#include "emb.h" + +namespace emb +{ +struct Stdout +{ + PyObject_HEAD + stdout_write_type write; +}; + +PyObject* Stdout_write(PyObject* self, PyObject* args) +{ + std::size_t written(0); + Stdout* selfimpl = reinterpret_cast<Stdout*>(self); + if (selfimpl->write) + { + char* data; + if (!PyArg_ParseTuple(args, "s", &data)) + return 0; + + std::string str(data); + selfimpl->write(str); + written = str.size(); + } + return PyLong_FromSize_t(written); +} + +PyObject* Stdout_flush(PyObject* self, PyObject* args) +{ + // no-op + return Py_BuildValue(""); +} + +PyMethodDef Stdout_methods[] = +{ + {"write", Stdout_write, METH_VARARGS, "sys.stdout.write"}, + {"flush", Stdout_flush, METH_VARARGS, "sys.stdout.write"}, + {0, 0, 0, 0} // sentinel +}; + +PyTypeObject StdoutType = +{ + PyVarObject_HEAD_INIT(0, 0) + "emb.StdoutType", /* tp_name */ + sizeof(Stdout), /* tp_basicsize */ + 0, /* tp_itemsize */ + 0, /* tp_dealloc */ + 0, /* tp_print */ + 0, /* tp_getattr */ + 0, /* tp_setattr */ + 0, /* tp_reserved */ + 0, /* tp_repr */ + 0, /* tp_as_number */ + 0, /* tp_as_sequence */ + 0, /* tp_as_mapping */ + 0, /* tp_hash */ + 0, /* tp_call */ + 0, /* tp_str */ + 0, /* tp_getattro */ + 0, /* tp_setattro */ + 0, /* tp_as_buffer */ + Py_TPFLAGS_DEFAULT, /* tp_flags */ + "emb.Stdout objects", /* tp_doc */ + 0, /* tp_traverse */ + 0, /* tp_clear */ + 0, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + Stdout_methods, /* tp_methods */ + 0, /* tp_members */ + 0, /* tp_getset */ + 0, /* tp_base */ + 0, /* tp_dict */ + 0, /* tp_descr_get */ + 0, /* tp_descr_set */ + 0, /* tp_dictoffset */ + 0, /* tp_init */ + 0, /* tp_alloc */ + 0, /* tp_new */ +}; + +PyModuleDef embmodule = +{ + PyModuleDef_HEAD_INIT, + "emb", 0, -1, 0, +}; + +// Internal state +PyObject* g_stdout; +PyObject* g_stdout_saved; + +PyMODINIT_FUNC PyInit_emb(void) +{ + g_stdout = 0; + g_stdout_saved = 0; + + StdoutType.tp_new = PyType_GenericNew; + if (PyType_Ready(&StdoutType) < 0) + return 0; + + PyObject* m = PyModule_Create(&embmodule); + if (m) + { + Py_INCREF(&StdoutType); + PyModule_AddObject(m, "Stdout", reinterpret_cast<PyObject*>(&StdoutType)); + } + return m; +} + +void set_stdout(stdout_write_type write) +{ + if (!g_stdout) + { + g_stdout_saved = PySys_GetObject("stdout"); // borrowed + g_stdout = StdoutType.tp_new(&StdoutType, 0, 0); + } + + Stdout* impl = reinterpret_cast<Stdout*>(g_stdout); + impl->write = write; + PySys_SetObject("stdout", g_stdout); +} + +void reset_stdout() +{ + if (g_stdout_saved) + PySys_SetObject("stdout", g_stdout_saved); + + Py_XDECREF(g_stdout); + g_stdout = 0; +} + +void append_inittab() +{ + PyImport_AppendInittab("emb", emb::PyInit_emb); +} + +} // namespace emb |