IO

/*  This file is part of the Vc library. {{{
Copyright © 2009-2015 Matthias Kretz <kretz@kde.org>

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 names of contributing organizations 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 HOLDER 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 AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

}}}*/

#ifndef VC_IO_
#define VC_IO_

#include "common/types.h"
#include "common/simdarrayfwd.h"
#include "common/memoryfwd.h"
#include <iostream>

#if defined(__GNUC__) && !defined(_WIN32) && defined(_GLIBCXX_OSTREAM)
#define Vc_HACK_OSTREAM_FOR_TTY 1
#endif

#ifdef Vc_HACK_OSTREAM_FOR_TTY
#include <unistd.h>
#include <ext/stdio_sync_filebuf.h>
#endif

namespace Vc_VERSIONED_NAMESPACE
{
namespace
{
#ifdef Vc_HACK_OSTREAM_FOR_TTY
class hacked_ostream : public std::ostream
{
public:
    using std::ostream::_M_streambuf;
};
bool mayUseColor(const std::ostream &os) __attribute__((__const__));
bool mayUseColor(const std::ostream &os)
{
    std::basic_streambuf<char> *hack1 =
        const_cast<std::basic_streambuf<char> *>(os.*(&hacked_ostream::_M_streambuf));
    __gnu_cxx::stdio_sync_filebuf<char> *hack =
        dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char> *>(hack1);
    if (!hack) {
        return false;
    }
    FILE *file = hack->file();
    return 1 == isatty(fileno(file));
}
#else
bool mayUseColor(const std::ostream &) { return false; }
#endif
}  // anonymous namespace

namespace AnsiColor
{
struct Type
{
    const char *data;
};
static const Type green = {"\033[1;40;32m"};
static const Type yellow = {"\033[1;40;33m"};
static const Type blue = {"\033[1;40;34m"};
static const Type normal = {"\033[0m"};

inline std::ostream &operator<<(std::ostream &out, const Type &c)
{
    if (mayUseColor(out)) {
        out << c.data;
    }
    return out;
}
}  // namespace AnsiColor

/**
 * \ingroup Vectors
 * \headerfile IO <Vc/IO>
 *
 * Prints the contents of a vector into a stream object.
 *
 * \code
 * const Vc::int_v v(Vc::IndexesFromZero);
 * std::cout << v << std::endl;
 * \endcode
 * will output (with SSE):
\verbatim
[0, 1, 2, 3]
\endverbatim
 *
 * \param out Any standard C++ ostream object. For example std::cout or a
 *            std::stringstream object.
 * \param v Any Vc::Vector object.
 * \return  The ostream object: to chain multiple stream operations.
 *
 * \note With the GNU standard library this function will check whether the
 *       output stream is a tty in which case it colorizes the output.
 */
template <typename T, typename Abi>
inline std::ostream &operator<<(std::ostream &out, const Vc::Vector<T, Abi> &v)
{
    using TT = typename std::conditional<std::is_same<T, char>::value ||
                                             std::is_same<T, unsigned char>::value ||
                                             std::is_same<T, signed char>::value,
                                         int,
                                         T>::type;
    out << AnsiColor::green << '[';
    out << TT(v[0]);
    for (size_t i = 1; i < v.Size; ++i) {
        out << ", " << TT(v[i]);
    }
    out << ']' << AnsiColor::normal;
    return out;
}

/**
 * \ingroup Masks
 * \headerfile IO <Vc/IO>
 *
 * Prints the contents of a mask into a stream object.
 *
 * \code
 * const Vc::short_m m = Vc::short_v::IndexesFromZero() < 3;
 * std::cout << m << std::endl;
 * \endcode
 * will output (with SSE):
\verbatim
m[1110 0000]
\endverbatim
 *
 * \param out Any standard C++ ostream object. For example std::cout or a
 *            std::stringstream object.
 * \param m Any Vc::Mask object.
 * \return  The ostream object: to chain multiple stream operations.
 *
 * \note With the GNU standard library this function will check whether the
 *       output stream is a tty in which case it colorizes the output.
 */
template <typename T, typename Abi>
inline std::ostream &operator<<(std::ostream &out, const Vc::Mask<T, Abi> &m)
{
    out << AnsiColor::blue << "m[";
    for (unsigned int i = 0; i < m.Size; ++i) {
        if (i > 0 && (i % 4) == 0) {
            out << ' ';
        }
        if (m[i]) {
            out << AnsiColor::yellow << '1';
        } else {
            out << AnsiColor::blue << '0';
        }
    }
    out << AnsiColor::blue << ']' << AnsiColor::normal;
    return out;
}

namespace Common
{
#ifdef DOXYGEN
/**
 * \ingroup Utilities
 * \headerfile dox.h <Vc/IO>
 *
 * Prints the contents of a Memory object into a stream object.
 *
 * \code
 * Vc::Memory<int_v, 10> m;
 * for (int i = 0; i < m.entriesCount(); ++i) {
 *   m[i] = i;
 * }
 * std::cout << m << std::endl;
 * \endcode
 * will output (with SSE):
\verbatim
{[0, 1, 2, 3] [4, 5, 6, 7] [8, 9, 0, 0]}
\endverbatim
 *
 * \param s Any standard C++ ostream object. For example std::cout or a std::stringstream object.
 * \param m Any Vc::Memory object.
 * \return  The ostream object: to chain multiple stream operations.
 *
 * \note With the GNU standard library this function will check whether the
 *       output stream is a tty in which case it colorizes the output.
 *
 * \warning Please do not forget that printing a large memory object can take a long time.
 */
template<typename V, typename Parent, typename Dimension, typename RM>
inline std::ostream &operator<<(std::ostream &s, const Vc::MemoryBase<V, Parent, Dimension, RM> &m);
#endif

template<typename V, typename Parent, typename RM>
inline std::ostream &operator<<(std::ostream &out, const MemoryBase<V, Parent, 1, RM> &m )
{
    out << AnsiColor::blue << '{' << AnsiColor::normal;
    for (unsigned int i = 0; i < m.vectorsCount(); ++i) {
        out << V(m.vector(i));
    }
    out << AnsiColor::blue << '}' << AnsiColor::normal;
    return out;
}

template<typename V, typename Parent, typename RM>
inline std::ostream &operator<<(std::ostream &out, const MemoryBase<V, Parent, 2, RM> &m )
{
    out << AnsiColor::blue << '{' << AnsiColor::normal;
    for (size_t i = 0; i < m.rowsCount(); ++i) {
        if (i > 0) {
            out << "\n ";
        }
        const size_t vcount = m[i].vectorsCount();
        for (size_t j = 0; j < vcount; ++j) {
            out << V(m[i].vector(j));
        }
    }
    out << AnsiColor::blue << '}' << AnsiColor::normal;
    return out;
}
}  // namespace Common

template<typename T, std::size_t N>
inline std::ostream &operator<<(std::ostream &out, const SimdArray<T, N> &v)
{
    out << AnsiColor::green << '<' << v[0];
    for (size_t i = 1; i < N; ++i) {
        if (i % 4 == 0) out << " |";
        out << ' ' << v[i];
    }
    return out << '>' << AnsiColor::normal;
}

template<typename T, std::size_t N>
inline std::ostream &operator<<(std::ostream &out, const SimdMaskArray<T, N> &m)
{
    out << AnsiColor::blue << "«";
    for (size_t i = 0; i < N; ++i) {
        if (i > 0 && (i % 4) == 0) {
            out << ' ';
        }
        if ( m[i] ) {
          out << AnsiColor::yellow << '1';
        } else {
          out << AnsiColor::blue << '0';
        }
    }
    return out << AnsiColor::blue << "»" << AnsiColor::normal;
}
}

#endif // VC_IO_

// vim: ft=cpp foldmethod=marker