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/*
* This file is a part of PikoTools
* and is distributed under the (new) BSD licence.
* Author: Tomasz Sowa <t.sowa@ttmath.org>
*/
/*
* Copyright (c) 2012-2021, Tomasz Sowa
* 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 Tomasz Sowa nor the names of contributors to this
* project 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 headerfile_picotools_convert_inttostr
#define headerfile_picotools_convert_inttostr
#include <string>
namespace pt
{
// if the buffer is too small it will be terminated at the beginning (empty string)
// and the function returns false
template<class CharType>
bool Toa(unsigned long long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
size_t i1, i2;
long rest;
if( len_out )
*len_out = 0;
if( buf_len == 0 )
return false;
i1 = i2 = 0;
if( base < 2 ) base = 2;
if( base > 16 ) base = 16;
do
{
rest = value % base;
value = value / base;
buffer[i2++] = (rest < 10) ? char(rest) + '0' : char(rest) - 10 + 'A';
}
while(value != 0 && i2 < buf_len);
if( i2 >= buf_len )
{
buffer[0] = 0; // ops, the buffer was too small
return false;
}
if( len_out )
*len_out = i2 - i1;
buffer[i2--] = 0;
for( ; i1 < i2 ; ++i1, --i2)
{
CharType temp = buffer[i1];
buffer[i1] = buffer[i2];
buffer[i2] = temp;
}
return true;
}
// if the buffer is too small it will be terminated at the beginning (empty string)
// and the function returns false
template<class CharType>
bool Toa(long long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
if( len_out )
*len_out = 0;
if( buf_len == 0 )
return false;
CharType * buf = buffer;
bool is_sign = false;
if( value < 0 )
{
buffer[0] = '-';
buf += 1;
buf_len -= 1;
value = -value;
is_sign = true;
}
bool res = Toa(static_cast<unsigned long long>(value), buf, buf_len, base, len_out);
if( res )
{
if( len_out && is_sign )
*len_out += 1;
}
else
{
buffer[0] = 0;
// len_out is set to zero by Toa()
}
return res;
}
template<class CharType>
bool Toa(unsigned long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
return Toa(static_cast<unsigned long long>(value), buffer, buf_len, base, len_out);
}
template<class CharType>
bool Toa(long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
return Toa(static_cast<long long>(value), buffer, buf_len, base, len_out);
}
template<class CharType>
bool Toa(unsigned int value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
return Toa(static_cast<unsigned long long>(value), buffer, buf_len, base, len_out);
}
template<class CharType>
bool Toa(int value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
return Toa(static_cast<long long>(value), buffer, buf_len, base, len_out);
}
template<class CharType>
bool Toa(unsigned short value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
return Toa(static_cast<unsigned long long>(value), buffer, buf_len, base, len_out);
}
template<class CharType>
bool Toa(short value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
{
return Toa(static_cast<long long>(value), buffer, buf_len, base, len_out);
}
template<class StringType>
void Toa(unsigned long long value, StringType & res, bool clear_string = true, int base = 10)
{
typename StringType::value_type buffer[50];
size_t buffer_len = sizeof(buffer) / sizeof(wchar_t);
if( clear_string )
res.clear();
/*
* the size of the buffer is sufficient so the status should always be true
*/
size_t len_out;
Toa(value, buffer, buffer_len, base, &len_out);
res.append(buffer, len_out);
}
template<class StringType>
void Toa(long long value, StringType & res, bool clear_string = true, int base = 10)
{
typename StringType::value_type buffer[50];
size_t buffer_len = sizeof(buffer) / sizeof(wchar_t);
if( clear_string )
res.clear();
/*
* the size of the buffer is sufficient so the status should always be true
*/
size_t len_out;
Toa(value, buffer, buffer_len, base, &len_out);
res.append(buffer, len_out);
}
template<class StringType>
void Toa(unsigned long value, StringType & res, bool clear_string = true, int base = 10)
{
Toa(static_cast<unsigned long long>(value), res, clear_string, base);
}
template<class StringType>
void Toa(long value, StringType & res, bool clear_string = true, int base = 10)
{
Toa(static_cast<long long>(value), res, clear_string, base);
}
template<class StringType>
void Toa(unsigned int value, StringType & res, bool clear_string = true, int base = 10)
{
Toa(static_cast<unsigned long long>(value), res, clear_string, base);
}
template<class StringType>
void Toa(int value, StringType & res, bool clear_string = true, int base = 10)
{
Toa(static_cast<long long>(value), res, clear_string, base);
}
template<class StringType>
void Toa(unsigned short value, StringType & res, bool clear_string = true, int base = 10)
{
Toa(static_cast<unsigned long long>(value), res, clear_string, base);
}
template<class StringType>
void Toa(short value, StringType & res, bool clear_string = true, int base = 10)
{
Toa(static_cast<long long>(value), res, clear_string, base);
}
std::string to_str(unsigned long long value, int base = 10);
std::string to_str(long long value, int base = 10);
std::string to_str(unsigned long value, int base = 10);
std::string to_str(long value, int base = 10);
std::string to_str(unsigned int value, int base = 10);
std::string to_str(int value, int base = 10);
std::string to_str(unsigned short value, int base = 10);
std::string to_str(short value, int base = 10);
std::wstring to_wstr(unsigned long long value, int base = 10);
std::wstring to_wstr(long long value, int base = 10);
std::wstring to_wstr(unsigned long value, int base = 10);
std::wstring to_wstr(long value, int base = 10);
std::wstring to_wstr(unsigned int value, int base = 10);
std::wstring to_wstr(int value, int base = 10);
std::wstring to_wstr(unsigned short value, int base = 10);
std::wstring to_wstr(short value, int base = 10);
}
#endif