299 lines
7.4 KiB
C++
299 lines
7.4 KiB
C++
/*
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* This file is a part of PikoTools
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* and is distributed under the (new) BSD licence.
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* Author: Tomasz Sowa <t.sowa@ttmath.org>
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*/
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/*
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* Copyright (c) 2012-2021, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name Tomasz Sowa nor the names of contributors to this
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* project may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef headerfile_picotools_convert_inttostr
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#define headerfile_picotools_convert_inttostr
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#include <string>
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namespace PT
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{
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// if the buffer is too small it will be terminated at the beginning (empty string)
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// and the function returns false
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template<class CharType>
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bool Toa(unsigned long long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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size_t i1, i2;
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long rest;
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if( len_out )
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*len_out = 0;
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if( buf_len == 0 )
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return false;
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i1 = i2 = 0;
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if( base < 2 ) base = 2;
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if( base > 16 ) base = 16;
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do
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{
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rest = value % base;
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value = value / base;
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buffer[i2++] = (rest < 10) ? char(rest) + '0' : char(rest) - 10 + 'A';
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}
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while(value != 0 && i2 < buf_len);
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if( i2 >= buf_len )
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{
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buffer[0] = 0; // ops, the buffer was too small
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return false;
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}
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if( len_out )
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*len_out = i2 - i1;
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buffer[i2--] = 0;
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for( ; i1 < i2 ; ++i1, --i2)
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{
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CharType temp = buffer[i1];
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buffer[i1] = buffer[i2];
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buffer[i2] = temp;
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}
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return true;
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}
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// if the buffer is too small it will be terminated at the beginning (empty string)
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// and the function returns false
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template<class CharType>
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bool Toa(long long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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if( len_out )
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*len_out = 0;
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if( buf_len == 0 )
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return false;
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CharType * buf = buffer;
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bool is_sign = false;
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if( value < 0 )
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{
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buffer[0] = '-';
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buf += 1;
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buf_len -= 1;
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value = -value;
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is_sign = true;
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}
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bool res = Toa(static_cast<unsigned long long>(value), buf, buf_len, base, len_out);
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if( res )
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{
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if( len_out && is_sign )
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*len_out += 1;
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}
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else
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{
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buffer[0] = 0;
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// len_out is set to zero by Toa()
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}
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return res;
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}
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template<class CharType>
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bool Toa(unsigned long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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return Toa(static_cast<unsigned long long>(value), buffer, buf_len, base, len_out);
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}
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template<class CharType>
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bool Toa(long value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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return Toa(static_cast<long long>(value), buffer, buf_len, base, len_out);
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}
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template<class CharType>
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bool Toa(unsigned int value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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return Toa(static_cast<unsigned long long>(value), buffer, buf_len, base, len_out);
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}
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template<class CharType>
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bool Toa(int value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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return Toa(static_cast<long long>(value), buffer, buf_len, base, len_out);
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}
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template<class CharType>
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bool Toa(unsigned short value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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return Toa(static_cast<unsigned long long>(value), buffer, buf_len, base, len_out);
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}
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template<class CharType>
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bool Toa(short value, CharType * buffer, size_t buf_len, int base = 10, size_t * len_out = 0)
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{
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return Toa(static_cast<long long>(value), buffer, buf_len, base, len_out);
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}
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template<class StringType>
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void Toa(unsigned long long value, StringType & res, bool clear_string = true, int base = 10)
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{
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typename StringType::value_type buffer[50];
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size_t buffer_len = sizeof(buffer) / sizeof(wchar_t);
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if( clear_string )
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res.clear();
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/*
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* the size of the buffer is sufficient so the status should always be true
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*/
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size_t len_out;
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Toa(value, buffer, buffer_len, base, &len_out);
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res.append(buffer, len_out);
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}
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template<class StringType>
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void Toa(long long value, StringType & res, bool clear_string = true, int base = 10)
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{
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typename StringType::value_type buffer[50];
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size_t buffer_len = sizeof(buffer) / sizeof(wchar_t);
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if( clear_string )
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res.clear();
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/*
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* the size of the buffer is sufficient so the status should always be true
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*/
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size_t len_out;
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Toa(value, buffer, buffer_len, base, &len_out);
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res.append(buffer, len_out);
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}
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template<class StringType>
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void Toa(unsigned long value, StringType & res, bool clear_string = true, int base = 10)
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{
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Toa(static_cast<unsigned long long>(value), res, clear_string, base);
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}
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template<class StringType>
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void Toa(long value, StringType & res, bool clear_string = true, int base = 10)
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{
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Toa(static_cast<long long>(value), res, clear_string, base);
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}
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template<class StringType>
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void Toa(unsigned int value, StringType & res, bool clear_string = true, int base = 10)
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{
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Toa(static_cast<unsigned long long>(value), res, clear_string, base);
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}
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template<class StringType>
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void Toa(int value, StringType & res, bool clear_string = true, int base = 10)
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{
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Toa(static_cast<long long>(value), res, clear_string, base);
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}
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template<class StringType>
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void Toa(unsigned short value, StringType & res, bool clear_string = true, int base = 10)
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{
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Toa(static_cast<unsigned long long>(value), res, clear_string, base);
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}
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template<class StringType>
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void Toa(short value, StringType & res, bool clear_string = true, int base = 10)
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{
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Toa(static_cast<long long>(value), res, clear_string, base);
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}
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std::string to_str(unsigned long long value, int base = 10);
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std::string to_str(long long value, int base = 10);
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std::string to_str(unsigned long value, int base = 10);
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std::string to_str(long value, int base = 10);
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std::string to_str(unsigned int value, int base = 10);
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std::string to_str(int value, int base = 10);
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std::string to_str(unsigned short value, int base = 10);
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std::string to_str(short value, int base = 10);
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std::wstring to_wstr(unsigned long long value, int base = 10);
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std::wstring to_wstr(long long value, int base = 10);
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std::wstring to_wstr(unsigned long value, int base = 10);
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std::wstring to_wstr(long value, int base = 10);
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std::wstring to_wstr(unsigned int value, int base = 10);
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std::wstring to_wstr(int value, int base = 10);
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std::wstring to_wstr(unsigned short value, int base = 10);
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std::wstring to_wstr(short value, int base = 10);
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}
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#endif
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