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// --------------------------------------------------------------------------
//
// File
// Name: ConversionString.cpp
// Purpose: Conversions to and from strings
// Created: 9/4/04
//
// --------------------------------------------------------------------------
#include "Box.h"
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#include "Conversion.h"
#include "autogen_ConversionException.h"
#include "MemLeakFindOn.h"
// --------------------------------------------------------------------------
//
// Function
// Name: BoxConvert::_ConvertStringToInt(const char *, int)
// Purpose: Convert from string to integer, with range checking.
// Always does signed -- no point in unsigned as C++ type checking
// isn't up to handling it properly.
// If a null pointer is passed in, then returns 0.
// Created: 9/4/04
//
// --------------------------------------------------------------------------
int32_t BoxConvert::_ConvertStringToInt(const char *pString, int Size)
{
// Handle null strings gracefully.
if(pString == 0)
{
return 0;
}
// Check for initial validity
if(*pString == '\0')
{
THROW_EXCEPTION(ConversionException, CannotConvertEmptyStringToInt)
}
// Convert.
char *numEnd = 0;
errno = 0; // Some platforms don't reset it.
long r = ::strtol(pString, &numEnd, 0);
// Check that all the characters were used
if(*numEnd != '\0')
{
THROW_EXCEPTION(ConversionException, BadStringRepresentationOfInt)
}
// Error check
if(r == 0 && errno == EINVAL)
{
THROW_EXCEPTION(ConversionException, BadStringRepresentationOfInt)
}
// Range check from strtol
if((r == LONG_MIN || r == LONG_MAX) && errno == ERANGE)
{
THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
}
// Check range for size of integer
switch(Size)
{
case 32:
{
// No extra checking needed if long is an int32
if(sizeof(long) > sizeof(int32_t))
{
if(r <= (0 - 0x7fffffffL) || r > 0x7fffffffL)
{
THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
}
}
break;
}
case 16:
{
if(r <= (0 - 0x7fff) || r > 0x7fff)
{
THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
}
break;
}
case 8:
{
if(r <= (0 - 0x7f) || r > 0x7f)
{
THROW_EXCEPTION(ConversionException, IntOverflowInConvertFromString)
}
break;
}
default:
{
THROW_EXCEPTION(ConversionException, BadIntSize)
break;
}
}
// Return number
return r;
}
// --------------------------------------------------------------------------
//
// Function
// Name: BoxConvert::_ConvertIntToString(std::string &, int32_t)
// Purpose: Convert signed interger to a string
// Created: 9/4/04
//
// --------------------------------------------------------------------------
void BoxConvert::_ConvertIntToString(std::string &rTo, int32_t From)
{
char text[64]; // size more than enough
::sprintf(text, "%d", (int)From);
rTo = text;
}
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