misc/libphysfs/lzma/CPP/Common/IntToString.cpp
author nemo
Mon, 10 Apr 2017 12:06:43 -0400
changeset 12218 bb5522e88ab2
permissions -rw-r--r--
bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash

// Common/IntToString.cpp

#include "StdAfx.h"

#include "IntToString.h"

void ConvertUInt64ToString(UInt64 value, char *s, UInt32 base)
{
  if (base < 2 || base > 36)
  {
    *s = '\0';
    return;
  }
  char temp[72];
  int pos = 0;
  do 
  {
    int delta = (int)(value % base);
    temp[pos++] = (char)((delta < 10) ? ('0' + delta) : ('a' + (delta - 10)));
    value /= base;
  }
  while (value != 0);
  do
    *s++ = temp[--pos];
  while(pos > 0);
  *s = '\0';
}

void ConvertUInt64ToString(UInt64 value, wchar_t *s)
{
  wchar_t temp[32];
  int pos = 0;
  do 
  {
    temp[pos++] = (wchar_t)(L'0' + (int)(value % 10));
    value /= 10;
  }
  while (value != 0);
  do 
    *s++ = temp[--pos];
  while(pos > 0);
  *s = L'\0';
}

void ConvertInt64ToString(Int64 value, char *s)
{
  if (value < 0)
  {
    *s++ = '-';
    value = -value;
  }
  ConvertUInt64ToString(value, s);
}

void ConvertInt64ToString(Int64 value, wchar_t *s)
{
  if (value < 0)
  {
    *s++ = L'-';
    value = -value;
  }
  ConvertUInt64ToString(value, s);
}