/usr/include/pdal/util/OStream.hpp is in libpdal-dev 1.4.0-1+b1.
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) 2014, Andrew Bell
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Hobu, Inc. or Flaxen Geo Consulting nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
****************************************************************************/
#pragma once
#include <sys/types.h>
#include <stdint.h>
#include <fstream>
#include <cstring>
#include <stack>
#include "portable_endian.hpp"
#include "pdal_util_export.hpp"
namespace pdal
{
class OStream
{
public:
PDAL_DLL OStream() : m_stream(NULL), m_fstream(NULL)
{}
PDAL_DLL OStream(const std::string& filename) :
m_stream(NULL), m_fstream(NULL)
{ open(filename); }
PDAL_DLL OStream(std::ostream *stream) : m_stream(stream), m_fstream(NULL)
{}
PDAL_DLL ~OStream()
{ delete m_fstream; }
PDAL_DLL int open(const std::string& filename)
{
if (m_stream)
return -1;
m_stream = m_fstream = new std::ofstream(filename,
std::ios_base::out | std::ios_base::binary);
return 0;
}
PDAL_DLL void close()
{
flush();
delete m_fstream;
m_fstream = NULL;
m_stream = NULL;
}
PDAL_DLL bool isOpen() const
{ return (bool)m_stream; }
PDAL_DLL void flush()
{ m_stream->flush(); }
PDAL_DLL operator bool ()
{ return (bool)(*m_stream); }
PDAL_DLL void seek(std::streampos pos)
{ m_stream->seekp(pos, std::ostream::beg); }
PDAL_DLL void put(const std::string& s)
{ put(s, s.size()); }
PDAL_DLL void put(const std::string& s, size_t len)
{
std::string os = s;
os.resize(len);
m_stream->write(os.c_str(), len);
}
PDAL_DLL void put(const char *c, size_t len)
{ m_stream->write(c, len); }
PDAL_DLL void put(const unsigned char *c, size_t len)
{ m_stream->write((const char *)c, len); }
PDAL_DLL std::streampos position() const
{ return m_stream->tellp(); }
PDAL_DLL void pushStream(std::ostream *strm)
{
m_streams.push(m_stream);
m_stream = strm;
}
PDAL_DLL std::ostream *popStream()
{
// Can't pop the last stream for now.
if (m_streams.empty())
return nullptr;
std::ostream *strm = m_stream;
m_stream = m_streams.top();
m_streams.pop();
return strm;
}
protected:
std::ostream *m_stream;
std::ostream *m_fstream; // Dup of above to facilitate cleanup.
private:
std::stack<std::ostream *> m_streams;
OStream(const OStream&);
};
/// Stream wrapper for output of binary data that converts from host ordering
/// to little endian format
class OLeStream : public OStream
{
public:
PDAL_DLL OLeStream()
{}
PDAL_DLL OLeStream(const std::string& filename) : OStream(filename)
{}
PDAL_DLL OLeStream(std::ostream *stream) : OStream(stream)
{}
PDAL_DLL OLeStream& operator << (uint8_t v)
{
m_stream->put((char)v);
return *this;
}
PDAL_DLL OLeStream& operator << (int8_t v)
{
m_stream->put((char)v);
return *this;
}
PDAL_DLL OLeStream& operator << (uint16_t v)
{
v = htole16(v);
m_stream->write((char *)&v, sizeof(v));
return *this;
}
PDAL_DLL OLeStream& operator << (int16_t v)
{
v = (int16_t)htole16((uint16_t)v);
m_stream->write((char *)&v, sizeof(v));
return *this;
}
PDAL_DLL OLeStream& operator << (uint32_t v)
{
v = htole32(v);
m_stream->write((char *)&v, sizeof(v));
return *this;
}
PDAL_DLL OLeStream& operator << (int32_t v)
{
v = (int32_t)htole32((uint32_t)v);
m_stream->write((char *)&v, sizeof(v));
return *this;
}
PDAL_DLL OLeStream& operator << (uint64_t v)
{
v = htole64(v);
m_stream->write((char *)&v, sizeof(v));
return *this;
}
PDAL_DLL OLeStream& operator << (int64_t v)
{
v = (int64_t)htole64((uint64_t)v);
m_stream->write((char *)&v, sizeof(v));
return *this;
}
PDAL_DLL OLeStream& operator << (float v)
{
uint32_t tmp(0);
std::memcpy(&tmp, &v, sizeof(v));
tmp = htole32(tmp);
m_stream->write((char *)&tmp, sizeof(tmp));
return *this;
}
PDAL_DLL OLeStream& operator << (double v)
{
uint64_t tmp(0);
std::memcpy(&tmp, &v, sizeof(v));
tmp = htole64(tmp);
m_stream->write((char *)&tmp, sizeof(tmp));
return *this;
}
};
/// Stream position marker with rewinding/reset support.
class OStreamMarker
{
public:
PDAL_DLL OStreamMarker(OStream& stream) : m_stream(stream)
{
if (m_stream.isOpen())
m_pos = m_stream.position();
else
m_pos = 0;
}
PDAL_DLL void mark()
{ m_pos = m_stream.position(); }
PDAL_DLL void rewind()
{ m_stream.seek(m_pos); }
private:
std::streampos m_pos;
OStream& m_stream;
OStreamMarker(const OStreamMarker&); // not implemented
OStreamMarker& operator=(const OStreamMarker&); // not implemented
};
} // namespace pdal
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