Jip J. Dekker
fad1b07018
git-subtree-dir: software/minizinc git-subtree-split: 4f10c82056ffcb1041d7ffef29d77a7eef92cf76
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Gleb Belov <gleb.belov@monash.edu>
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#pragma once
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#include <cstdio>
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namespace MiniZinc {
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/// Helper class to redirect, e.g., stdout to stderr
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class StreamRedir {
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/// The stream to be changed
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FILE* const _file0;
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/*
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* Structure for retaining information about a stream, sufficient to
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* recreate that stream later on.
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* See
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* https://stackoverflow.com/questions/4760201/how-do-i-suppress-output-while-using-a-dynamic-library
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*/
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struct StreamInfo {
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int fd = -1;
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fpos_t pos;
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};
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/// The original stream
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StreamInfo _streamInfo;
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public:
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/// Constructs with the stream to be changed
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// StreamRedir(FILE* s0);
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/// Constructs with s0 and replaces it by s1
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StreamRedir(FILE* s0, FILE* s1, bool fFlush = true);
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~StreamRedir();
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/// Restore original
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void restore(bool fFLush = true);
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protected:
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/// Replace & save stream by s1
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void replaceStream(FILE* s1, bool fFlush = true);
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};
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} // namespace MiniZinc
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