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/*
* This file is part of the libsigrokdecode project.
*
* Copyright (C) 2012 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 "libsigrokdecode-internal.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */
#include "libsigrokdecode.h"
#include "config.h"
#include <stdarg.h>
#include <glib.h>
#include <frameobject.h> /* Python header not pulled in by default. */
/** @private */
SRD_PRIV void srd_exception_catch(const char *format, ...)
{
PyObject *etype, *evalue, *etb, *py_str;
PyTracebackObject *py_tb;
GString *msg;
va_list args;
char *ename, *str, *tracestr;
if (!PyErr_Occurred())
/* Nothing is wrong. */
return;
PyErr_Fetch(&etype, &evalue, &etb);
PyErr_NormalizeException(&etype, &evalue, &etb);
if (!(py_str = PyObject_Str(evalue))) {
/* Shouldn't happen. */
srd_dbg("Failed to convert exception value to string.");
return;
}
/* Send the exception error message(s) to srd_err(). */
if (evalue)
ename = (char *)Py_TYPE(evalue)->tp_name;
else
/* Can be NULL. */
ename = "(unknown exception)";
msg = g_string_sized_new(128);
g_string_append(msg, ename);
g_string_append(msg, ": ");
va_start(args, format);
g_string_append_vprintf(msg, format, args);
va_end(args);
py_str_as_str(py_str, &str);
g_string_append(msg, str);
Py_DecRef(py_str);
srd_err(msg->str);
/* Send a more precise error location to srd_dbg(), if we have it. */
if (etb && etb != Py_None) {
tracestr = NULL;
py_tb = (PyTracebackObject *)etb;
py_str = PyUnicode_FromFormat("%U:%d in %U",
py_tb->tb_frame->f_code->co_filename,
py_tb->tb_frame->f_lineno,
py_tb->tb_frame->f_code->co_name);
py_str_as_str(py_str, &tracestr);
Py_DecRef(py_str);
g_string_printf(msg, "%s in %s: %s", ename, tracestr, str);
srd_dbg(msg->str);
g_free(tracestr);
}
g_free(str);
g_string_free(msg, TRUE);
Py_XDECREF(etype);
Py_XDECREF(evalue);
Py_XDECREF(etb);
/* Just in case. */
PyErr_Clear();
}
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