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/*
* This file is part of the sigrok project.
*
* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
* Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
/**
* Helper function to handle Python strings.
*
* TODO: @param entries.
*
* @return SRD_OK upon success, a (negative) error code otherwise.
* The 'outstr' argument points to a malloc()ed string upon success.
*/
int h_str(PyObject *py_res, PyObject *py_mod, const char *key, char **outstr)
{
PyObject *py_str;
char *str;
int ret;
py_str = PyObject_GetAttrString(py_res, (char *)key); /* NEWREF */
if (!py_str || !PyString_Check(py_str)) {
ret = SRD_ERR_PYTHON; /* TODO: More specific error? */
goto err_h_decref_mod;
}
/*
* PyString_AsString()'s returned string refers to an internal buffer
* (not a copy), i.e. the data must not be modified, and the memory
* must not be free()'d.
*/
if (!(str = PyString_AsString(py_str))) {
ret = SRD_ERR_PYTHON; /* TODO: More specific error? */
goto err_h_decref_str;
}
if (!(*outstr = g_strdup(str))) {
ret = SRD_ERR_MALLOC;
goto err_h_decref_str;
}
Py_XDECREF(py_str);
return SRD_OK;
err_h_decref_str:
Py_XDECREF(py_str);
err_h_decref_mod:
Py_XDECREF(py_mod);
if (PyErr_Occurred())
PyErr_Print(); /* Returns void. */
return ret;
}
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