include/pantheios/inserters/integer.hpp

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/* /////////////////////////////////////////////////////////////////////////
 * File:        pantheios/inserters/integer.hpp
 *
 * Purpose:     String inserters for fundamental types
 *
 * Created:     21st June 2005
 * Updated:     1st September 2006
 *
 * Author:      Matthew Wilson
 *
 * Home:        http://www.pantheios.org/
 *
 * Copyright:   Matthew Wilson and Synesis Software Pty Ltd, 1999-2005.
 *              Matthew Wilson, 2005-2006.
 *
 * 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 Matthew Wilson and Synesis Software nor the names of
 *   any 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 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 PANTHEIOS_INCL_PANTHEIOS_INSERTERS_HPP_INTEGER
#define PANTHEIOS_INCL_PANTHEIOS_INSERTERS_HPP_INTEGER

/* /////////////////////////////////////////////////////////////////////////
 * Version information
 */

#ifndef PANTHEIOS_DOCUMENTATION_SKIP_SECTION
# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INTEGER_MAJOR    2
# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INTEGER_MINOR    0
# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INTEGER_REVISION 9
# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INTEGER_EDIT     9
#endif /* !PANTHEIOS_DOCUMENTATION_SKIP_SECTION */

/* /////////////////////////////////////////////////////////////////////////
 * Includes
 */

#include <pantheios/pantheios.hpp>
#include <pantheios/inserters/fmt.hpp>

#include <stlsoft/shims/access/string/fwd.h>
#include <stlsoft/printf_traits.hpp>

/* /////////////////////////////////////////////////////////////////////////
 * Namespace
 */

#if !defined(PANTHEIOS_NO_NAMESPACE)
namespace pantheios
{

#endif /* !PANTHEIOS_NO_NAMESPACE */

/* /////////////////////////////////////////////////////////////////////////
 * Inserter classes
 */

class integer
{
public:
    typedef integer     class_type;
private:
    typedef char        char_type;

private:
    template <ss_typename_param_k I>
    static size_t sprint_(I const &i, int widthAndFormat, char_type buffer[], size_t cchBuffer)
    {
        if(0 == widthAndFormat)
        {
            return static_cast<size_t>(panthieos_inserter_snprintf_(&buffer[0], cchBuffer, ::stlsoft::printf_traits<I>::format_a(), i));
        }
        else
        {
            char        szFmt[101];
            int         width;
            char const  *zeroX;
            char const  *leadingMinus   =   "";
            char const  *zeroPad;

            if(widthAndFormat < 0)
            {
                widthAndFormat  =   -widthAndFormat;
                leadingMinus    =   "-";
            }

            zeroX   =   ((fmt::hex | fmt::zeroXPrefix) == (widthAndFormat & (fmt::hex | fmt::zeroXPrefix))) ? "0x" : "";
            zeroPad =   (widthAndFormat & fmt::zeroPadded) ? "0" : "";
            width   =   widthAndFormat & 0xff;

            panthieos_inserter_snprintf_(  &szFmt[0]
                                        ,   STLSOFT_NUM_ELEMENTS(szFmt)
                                        ,   "%s%%%s%s%d%s"
                                        ,   zeroX
                                        ,   leadingMinus
                                        ,   zeroPad
                                        ,   width
                                        ,   (widthAndFormat & fmt::hex) ? "x" : ::stlsoft::printf_traits<I>::format_a() + 1);

            return static_cast<size_t>(panthieos_inserter_snprintf_(buffer, cchBuffer, szFmt, i));
        }
    }

    template <ss_typename_param_k I>
    size_t sprint_(I const &i, int widthAndFormat)
    {
        return class_type::sprint_(i, widthAndFormat, m_sz, STLSOFT_NUM_ELEMENTS(m_sz));
    }

private:
#ifdef STLSOFT_CF_8BIT_INT_EXTENDED_TYPE_IS_DISTINCT
    size_t init_(::stlsoft::sint8_t i);
    size_t init_(::stlsoft::uint8_t i);
#endif // STLSOFT_CF_8BIT_INT_EXTENDED_TYPE_IS_DISTINCT
#ifdef STLSOFT_CF_16BIT_INT_EXTENDED_TYPE_IS_DISTINCT
    size_t init_(::stlsoft::sint16_t i);
    size_t init_(::stlsoft::uint16_t i);
#endif // STLSOFT_CF_16BIT_INT_EXTENDED_TYPE_IS_DISTINCT
#ifdef STLSOFT_CF_32BIT_INT_EXTENDED_TYPE_IS_DISTINCT
    size_t init_(::stlsoft::sint32_t i);
    size_t init_(::stlsoft::uint32_t i);
#endif // STLSOFT_CF_32BIT_INT_EXTENDED_TYPE_IS_DISTINCT
#ifdef STLSOFT_CF_64BIT_INT_SUPPORT
    size_t init_(::stlsoft::sint64_t i);
    size_t init_(::stlsoft::uint64_t i);
#endif /* STLSOFT_CF_64BIT_INT_SUPPORT */
    size_t init_(int i);
    size_t init_(unsigned int i);
    size_t init_(long i);
    size_t init_(unsigned long i);

public:
#ifdef STLSOFT_CF_8BIT_INT_EXTENDED_TYPE_IS_DISTINCT

    explicit integer(::stlsoft::sint8_t i, int widthAndFormat = 0);
    explicit integer(::stlsoft::uint8_t i, int widthAndFormat = 0);
#endif // STLSOFT_CF_8BIT_INT_EXTENDED_TYPE_IS_DISTINCT
#ifdef STLSOFT_CF_16BIT_INT_EXTENDED_TYPE_IS_DISTINCT

    explicit integer(::stlsoft::sint16_t i, int widthAndFormat = 0);
    explicit integer(::stlsoft::uint16_t i, int widthAndFormat = 0);
#endif // STLSOFT_CF_16BIT_INT_EXTENDED_TYPE_IS_DISTINCT
#ifdef STLSOFT_CF_32BIT_INT_EXTENDED_TYPE_IS_DISTINCT

    explicit integer(::stlsoft::sint32_t i, int widthAndFormat = 0);
    explicit integer(::stlsoft::uint32_t i, int widthAndFormat = 0);
#endif // STLSOFT_CF_32BIT_INT_EXTENDED_TYPE_IS_DISTINCT
#ifdef STLSOFT_CF_64BIT_INT_SUPPORT

    explicit integer(::stlsoft::sint64_t i, int widthAndFormat = 0);
    explicit integer(::stlsoft::uint64_t i, int widthAndFormat = 0);
#endif /* STLSOFT_CF_64BIT_INT_SUPPORT */

    explicit integer(int i, int widthAndFormat = 0);
    explicit integer(unsigned int i, int widthAndFormat = 0);
    explicit integer(long i, int widthAndFormat = 0);
    explicit integer(unsigned long i, int widthAndFormat = 0);

public:
    char const  *data() const;
    char const  *c_str() const;
    size_t      length() const;

private:
    void construct_() const;
    void construct_();

private:
    enum IntegerSize
    {
            typeIsS32   =   -1
        ,   typeIsU32   =   -2
#ifdef STLSOFT_CF_64BIT_INT_SUPPORT
        ,   typeIsS64   =   -3
        ,   typeIsU64   =   -4
#endif /* STLSOFT_CF_64BIT_INT_SUPPORT */
    };

    union u
    {
        ::stlsoft::sint32_t      s32;   //  typeIsS32
        ::stlsoft::uint32_t      u32;   //  typeIsU32
#ifdef STLSOFT_CF_64BIT_INT_SUPPORT
        ::stlsoft::sint64_t      s64;   //  typeIsS64
        ::stlsoft::uint64_t      u64;   //  typeIsU64
#endif /* STLSOFT_CF_64BIT_INT_SUPPORT */
    };

    u           m_value;            // The value, copied for lazy conversion
    size_t      m_len;              // Length, and marker for type: 1 == float; 2 == double; 3 == long double
    char        m_sz[256];          // Marker for converted, if m_sz[0] == '\0'
    const int   m_widthAndFormat;

private:
#if !defined(STLSOFT_COMPILER_IS_GCC)
    integer(class_type const &);
#endif /* compiler */
    class_type &operator =(class_type const &);
};

/* /////////////////////////////////////////////////////////////////////////
 * String Access Shims
 */

inline char const *c_str_data_a(integer const &i)
{
    return i.data();
}
inline char const *c_str_data(integer const &i)
{
    return i.data();
}

inline size_t c_str_len_a(integer const &i)
{
    return i.length();
}
inline size_t c_str_len(integer const &i)
{
    return i.length();
}

inline char const *c_str_ptr_a(integer const &i)
{
    return i.c_str();
}
inline char const *c_str_ptr(integer const &i)
{
    return i.c_str();
}

/* /////////////////////////////////////////////////////////////////////////
 * Namespace
 */

#if !defined(PANTHEIOS_NO_NAMESPACE)
} /* namespace pantheios */

namespace stlsoft
{
    // 'Export' the string access shims into the STLSoft namespace
    //
    // c_str_ptr(_a) is not necessary for version 1.0 of Pantheios, but it's
    // defined and exported in order to allow for the case where someone
    // may find a legitimate use for the conversion classes additional to
    // the type-tunnelling of the Panthieos API.

    using ::pantheios::c_str_data_a;
    using ::pantheios::c_str_data;

    using ::pantheios::c_str_len;
    using ::pantheios::c_str_len_a;

    using ::pantheios::c_str_ptr_a;
    using ::pantheios::c_str_ptr;
}

#endif /* !PANTHEIOS_NO_NAMESPACE */

/* /////////////////////////////////////////////////////////////////////////
 * Inclusion
 */

#ifdef STLSOFT_CF_PRAGMA_ONCE_SUPPORT
# pragma once
#endif /* STLSOFT_CF_PRAGMA_ONCE_SUPPORT */

/* ////////////////////////////////////////////////////////////////////// */

#endif /* !PANTHEIOS_INCL_PANTHEIOS_INSERTERS_HPP_INTEGER */

/* ////////////////////////////////////////////////////////////////////// */

pantheios Library documentation © Matthew Wilson, 2006