149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
/*
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* GDSII-Converter Python Plugin
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* Copyright (C) 2019 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of GDSII-Converter.
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*
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* GDSII-Converter is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* GDSII-Converter is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @defgroup python-plugin Python Plugin for External Renderer
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* @ingroup plugins
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* This is a plugin for calling an external python script as renderer
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* @addtogroup python-plugin
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* @{
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*/
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#include <stdio.h>
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#include <glib.h>
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#include <unistd.h>
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#include <Python.h>
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#include <gds-render/gds-utils/gds-types.h>
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#include <gds-render/output-renderers/external-renderer-interfaces.h>
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/**
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* @brief Global variable for loaded module. This is not very nice.
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* @warning This has to be changed, if this api wants to be re-entrant.
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*/
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static PyObject *p_module = NULL;
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static int check_file_exists(const char *path)
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{
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FILE *file;
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int ret = -1;
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file = fopen(path, "rb");
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if (file) {
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fclose(file);
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ret = 0;
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}
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return ret;
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}
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int FUNC_DECL(EXTERNAL_LIBRARY_RENDER_FUNCTION)(struct gds_cell *toplevel, GList *layer_info_list, const char *output_file_name, double scale)
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{
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int ret = 0;
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PyObject *p_render_func;
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PyObject *p_return_value;
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if (!toplevel)
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return -1000;
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if (!p_module)
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return -2000;
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printf("Rendering %s\n", toplevel->name);
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p_render_func = PyObject_GetAttrString(p_module, "test_func");
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if (!p_render_func && !PyCallable_Check(p_render_func)) {
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if (PyErr_Occurred())
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PyErr_Print();
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else
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fprintf(stderr, "Function not found in python module\n");
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ret = -1;
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goto return_value;
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}
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p_return_value = PyObject_CallObject(p_render_func, NULL);
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if (p_return_value) {
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printf("Result of call: %ld\n", PyLong_AsLong(p_return_value));
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Py_DECREF(p_return_value);
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}
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Py_XDECREF(p_render_func);
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return_value:
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return ret;
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}
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int FUNC_DECL(EXTERNAL_LIBRARY_INIT_FUNCTION)(const char *params, const char *version)
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{
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int ret = 0;
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PyObject *p_name;
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PyObject *p_sys_path;
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PyObject *p_cwd_string;
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char cwd[256];
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if (!params || !version)
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return -1000;
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printf("Init with params: %s\ngds-render version: %s\n", params, version);
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Py_Initialize();
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if (!getcwd(cwd, sizeof(cwd))) {
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return -2;
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}
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p_sys_path = PySys_GetObject("path");
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p_cwd_string = PyUnicode_FromString(cwd);
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PyList_Append(p_sys_path, p_cwd_string);
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Py_DECREF(p_cwd_string);
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/* This renderer has only one parameter: The name of the file */
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/*if (check_file_exists(params))
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return -1001;
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*/
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p_name = PyUnicode_DecodeFSDefault(params);
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p_module = PyImport_Import(p_name);
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Py_DECREF(p_name);
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if (!p_module) {
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PyErr_Print();
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fprintf(stderr, "Failed to load %s\n", params);
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ret = -1;
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goto return_value;
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}
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return_value:
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return ret;
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}
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int FUNC_DECL(EXTERNAL_LIBRARY_FINALIZE_FUNCTION)(void)
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{
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int ret;
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printf("Finalizing\n");
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if (p_module)
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Py_DECREF(p_module);
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ret = Py_FinalizeEx();
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return ret;
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}
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/** @} */
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