added: functions for dealing with white characters:
bool IsWhite(wchar_t c, bool check_additional_chars, bool treat_new_line_as_white) (checking unicode white characters too)
CharType * SkipWhite(CharType * str, bool check_additional_chars = true, bool treat_new_line_as_white = true)
IsDigit(wchar_t c, int base, int * digit)
added: functions to converting from a string to an integer:
unsigned long long Toull(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
long long Toll(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
unsigned long Toul(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
unsigned int Toui(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
long Tol(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
int Toi(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
changed: some work in Space (new Api)
now Text() methods returns std::wstring by value (before they were returned by reference)
added std::wstring & TextRef() methods
added unsigned int UInt(), unsigned long ULong() and LongLong() and ULongLong()
GetValue() renamed to GetFirstValue()
AText() renamed to TextA() and they return std::string by value now
git-svn-id: svn://ttmath.org/publicrep/pikotools/trunk@1066 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
211
convert/strtoint.h
Normal file
211
convert/strtoint.h
Normal file
@@ -0,0 +1,211 @@
|
||||
/*
|
||||
* This file is a part of PikoTools
|
||||
* and is distributed under the (new) BSD licence.
|
||||
* Author: Tomasz Sowa <t.sowa@ttmath.org>
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 2017, 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_strtoint
|
||||
#define headerfile_picotools_convert_strtoint
|
||||
|
||||
#include <limits>
|
||||
#include "text.h"
|
||||
#include "misc.h"
|
||||
|
||||
|
||||
namespace PT
|
||||
{
|
||||
|
||||
|
||||
|
||||
|
||||
template<typename CharType>
|
||||
unsigned long long Toull(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
unsigned long long res = 0;
|
||||
bool carry = false;
|
||||
int digit;
|
||||
|
||||
SetOverflow(was_overflow, false);
|
||||
str = SkipWhite(str);
|
||||
|
||||
while( !carry && IsDigit(*str, base, &digit) )
|
||||
{
|
||||
#ifdef __GNUC__
|
||||
carry = __builtin_mul_overflow(res, static_cast<unsigned long long>(base), &res);
|
||||
|
||||
if( !carry )
|
||||
{
|
||||
carry = __builtin_add_overflow(res, static_cast<unsigned long long>(digit), &res);
|
||||
}
|
||||
#else
|
||||
// on other compilers than GCC or CLANG we do not test overflow at the moment
|
||||
res = res * static_cast<unsigned long long>(base) + static_cast<unsigned long long>(digit);
|
||||
#endif
|
||||
|
||||
str += 1;
|
||||
}
|
||||
|
||||
if( carry )
|
||||
{
|
||||
while( IsDigit(*str, base, &digit) )
|
||||
{
|
||||
str += 1;
|
||||
}
|
||||
|
||||
SetOverflow(was_overflow, true);
|
||||
res = 0;
|
||||
}
|
||||
|
||||
if( after_str )
|
||||
*after_str = str;
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
|
||||
template<typename CharType>
|
||||
long long Toll(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
bool was_sign = false;
|
||||
bool was_overflow_u = false;
|
||||
|
||||
SetOverflow(was_overflow, false);
|
||||
str = SkipWhite(str);
|
||||
|
||||
if( *str == '-' )
|
||||
{
|
||||
was_sign = true;
|
||||
str += 1;
|
||||
}
|
||||
|
||||
// we do not trim spaces between a sign and a digit
|
||||
|
||||
unsigned long long uval = Toull(str, base, after_str, &was_overflow_u);
|
||||
unsigned long long sign_add = ( was_sign ) ? 1 : 0;
|
||||
|
||||
if( was_overflow_u )
|
||||
{
|
||||
SetOverflow(was_overflow, true);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if( uval > static_cast<unsigned long long>(std::numeric_limits<long long>::max()) + sign_add )
|
||||
{
|
||||
SetOverflow(was_overflow, true);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if( was_sign )
|
||||
{
|
||||
return static_cast<long long>(0) - static_cast<long long>(uval);
|
||||
}
|
||||
|
||||
return static_cast<long long>(uval);
|
||||
}
|
||||
|
||||
|
||||
|
||||
template<typename CharType, typename IntegerType>
|
||||
IntegerType ToUnsignedIntegerType(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
bool was_overflow_ll = false;
|
||||
|
||||
SetOverflow(was_overflow, false);
|
||||
unsigned long long val = Toull(str, base, after_str, &was_overflow_ll);
|
||||
|
||||
if( was_overflow_ll || val > static_cast<unsigned long long>(std::numeric_limits<IntegerType>::max()) )
|
||||
{
|
||||
SetOverflow(was_overflow, true);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return static_cast<IntegerType>(val);
|
||||
}
|
||||
|
||||
|
||||
template<class CharType>
|
||||
unsigned long Toul(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
return ToUnsignedIntegerType<CharType, unsigned long>(str, base, after_str, was_overflow);
|
||||
}
|
||||
|
||||
template<class CharType>
|
||||
unsigned int Toui(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
return ToUnsignedIntegerType<CharType, unsigned int>(str, base, after_str, was_overflow);
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
template<typename CharType, typename IntegerType>
|
||||
IntegerType ToIntegerType(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
bool was_overflow_ll = false;
|
||||
|
||||
SetOverflow(was_overflow, false);
|
||||
long long val = Toll(str, base, after_str, &was_overflow_ll);
|
||||
|
||||
if( was_overflow_ll ||
|
||||
val < static_cast<long long>(std::numeric_limits<IntegerType>::min()) ||
|
||||
val > static_cast<long long>(std::numeric_limits<IntegerType>::max()) )
|
||||
{
|
||||
SetOverflow(was_overflow, true);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return static_cast<IntegerType>(val);
|
||||
}
|
||||
|
||||
|
||||
|
||||
template<class CharType>
|
||||
long Tol(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
return ToIntegerType<CharType, long>(str, base, after_str, was_overflow);
|
||||
}
|
||||
|
||||
template<class CharType>
|
||||
int Toi(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
|
||||
{
|
||||
return ToIntegerType<CharType, int>(str, base, after_str, was_overflow);
|
||||
}
|
||||
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user