StringToInt.cpp
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StringToInt.cpp
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	// Common/StringToInt.cpp

	#include "StdAfx.h"

	#include "StringToInt.h"

	UInt64 ConvertStringToUInt64(const char s, const char *end)
	{
	UInt64 result = 0;
	while(true)
	{
	char c = *s;
	if (c < '0' \|\| c > '9')
	{
	if (end != NULL)
	*end = s;
	return result;
	}
	result *= 10;
	result += (c - '0');
	s++;
	}
	}

	UInt64 ConvertOctStringToUInt64(const char s, const char *end)
	{
	UInt64 result = 0;
	while(true)
	{
	char c = *s;
	if (c < '0' \|\| c > '7')
	{
	if (end != NULL)
	*end = s;
	return result;
	}
	result <<= 3;
	result += (c - '0');
	s++;
	}
	}


	UInt64 ConvertStringToUInt64(const wchar_t s, const wchar_t *end)
	{
	UInt64 result = 0;
	while(true)
	{
	wchar_t c = *s;
	if (c < '0' \|\| c > '9')
	{
	if (end != NULL)
	*end = s;
	return result;
	}
	result *= 10;
	result += (c - '0');
	s++;
	}
	}


	Int64 ConvertStringToInt64(const char s, const char *end)
	{
	if (*s == '-')
	return -(Int64)ConvertStringToUInt64(s + 1, end);
	return ConvertStringToUInt64(s, end);
	}