/usr/include/cxxtools/multifstream.h is in libcxxtools-dev 2.2.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2003 Tommi Maekitalo
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* As a special exception, you may use this file as part of a free
* software library without restriction. Specifically, if other files
* instantiate templates or use macros or inline functions from this
* file, or you compile this file and link it with other files to
* produce an executable, this file does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. This exception does not however invalidate any other
* reasons why the executable file might be covered by the GNU Library
* General Public License.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CXXTOOLS_MULTIFSTREAM_H
#define CXXTOOLS_MULTIFSTREAM_H
#include <fstream>
#include <glob.h>
#include <string>
#include <queue>
namespace cxxtools
{
/**
Read multiple files as one stream.
Multiple files are
*/
class multifstreambuf : public std::streambuf
{
glob_t mglob;
unsigned current;
std::filebuf file;
char ch;
typedef std::queue<std::pair<std::string, int> > patterns_type;
patterns_type patterns;
public:
multifstreambuf();
explicit multifstreambuf(const char* pattern, int flags = 0);
~multifstreambuf();
bool open_next();
int_type overflow(int_type c);
int_type underflow();
int sync();
const char* current_filename() const
{ return mglob.gl_pathv[current]; }
void add_pattern(const std::string& pattern, int flags = 0)
{ patterns.push(patterns_type::value_type(pattern, flags)); }
};
class multi_ifstream : public std::istream
{
multifstreambuf buffer;
public:
multi_ifstream()
: std::istream(0)
{
init(&buffer);
}
multi_ifstream(const char* pattern, int flags = 0)
: std::istream(0),
buffer(pattern, flags)
{
init(&buffer);
}
const char* current_filename() const
{ return buffer.current_filename(); }
void add_pattern(const std::string& pattern, int flags = 0)
{ buffer.add_pattern(pattern, flags); }
/// stl-compatible inserter
class pattern_inserter
: public std::iterator<std::output_iterator_tag, const std::string>
{
multi_ifstream& m;
public:
pattern_inserter(multi_ifstream& m_)
: m(m_) { }
pattern_inserter& operator= (const std::string& p)
{ m.add_pattern(p); return *this; }
pattern_inserter& operator* ()
{ return *this; }
pattern_inserter& operator++ ()
{ return *this; }
pattern_inserter& operator++ (int)
{ return *this; }
};
pattern_inserter back_inserter()
{ return pattern_inserter(*this); }
};
}
#endif // CXXTOOLS_MULTIFSTREAM_H
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