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// Cppcheck - A tool for static C/C++ code analysis
// Copyright (C) 2007-2016 Cppcheck team.
// 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
// 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 <>.
#ifndef REDIRECT_H
#define REDIRECT_H
#include <iostream>
extern std::ostringstream errout;
extern std::ostringstream output;
* @brief Utility class for capturing cout and cerr to ostringstream buffers
* for later use. Uses RAII to stop redirection when the object goes out of
* scope.
class RedirectOutputError {
/** Set up redirection, flushing anything in the pipes. */
RedirectOutputError() {
// flush all old output
_oldCout = std::cout.rdbuf(); // back up cout's streambuf
_oldCerr = std::cerr.rdbuf(); // back up cerr's streambuf
std::cout.rdbuf(_out.rdbuf()); // assign streambuf to cout
std::cerr.rdbuf(_err.rdbuf()); // assign streambuf to cerr
/** Revert cout and cerr behaviour */
~RedirectOutputError() {
std::cout.rdbuf(_oldCout); // restore cout's original streambuf
std::cerr.rdbuf(_oldCerr); // restore cerrs's original streambuf
errout << _err.str();
output << _out.str();
/** Return what would be printed to cout. See also clearOutput() */
std::string getOutput() const {
return _out.str();
/** Normally called after getOutput() to prevent same text to be returned
twice. */
void clearOutput() {
/** Return what would be printed to cerr. See also clearErrout() */
std::string getErrout() const {
return _err.str();
/** Normally called after getErrout() to prevent same text to be returned
twice. */
void clearErrout() {
std::ostringstream _out;
std::ostringstream _err;
std::streambuf *_oldCout;
std::streambuf *_oldCerr;
#define REDIRECT RedirectOutputError redir;
#define GET_REDIRECT_OUTPUT redir.getOutput()
#define CLEAR_REDIRECT_OUTPUT redir.clearOutput()
#define GET_REDIRECT_ERROUT redir.getErrout()
#define CLEAR_REDIRECT_ERROUT redir.clearErrout()