MF_API MFString MFString_GetStats()
{
size_t overhead = stringPool.GetTotalMemory() + stringPool.GetOverheadMemory() + stringHeap.GetOverheadMemory();
size_t waste = 0, averageSize = 0;
// calculate waste
int numStrings = stringPool.GetNumAllocated();
for(int a=0; a<numStrings; ++a)
{
MFStringData *pString = (MFStringData*)stringPool.GetItem(a);
size_t allocated = pString->allocated;
if(allocated)
{
size_t bytes = pString->bytes+1;
averageSize += bytes;
waste += allocated - bytes;
}
}
if(numStrings)
averageSize /= numStrings;
MFString desc;
desc.Reserve(1024);
desc = MFStr("String heap memory: " MFFMT_SIZE_T " allocated/" MFFMT_SIZE_T " reserved + " MFFMT_SIZE_T " overhead Waste: " MFFMT_SIZE_T " Average length: " MFFMT_SIZE_T "\n\tPool: %d/%d", stringHeap.GetAllocatedMemory(), stringHeap.GetTotalMemory(), overhead, waste, averageSize, stringPool.GetNumAllocated(), stringPool.GetNumReserved());
int numGroups = stringHeap.GetNumPools();
for(int a=0; a<numGroups; ++a)
{
MFObjectPool *pPool = stringHeap.GetPool(a);
desc += MFStr("\n\t\t" MFFMT_SIZE_T " byte: %d/%d", pPool->GetObjectSize(), pPool->GetNumAllocated(), pPool->GetNumReserved());
}
return desc;
}
MFString MFString::SubStr(int offset, int count) const
{
if(!pData)
return *this;
// limit within the strings range
int maxChars = (int)pData->bytes - offset;
if(count < 0 || count > maxChars)
count = maxChars;
// bail if we don't need to do anything
if(count == (int)pData->bytes)
return *this;
// allocate a new string
MFString t;
t.Reserve(count + 1);
t.pData->bytes = count;
// copy sub string
MFString_CopyN(t.pData->pMemory, pData->pMemory + offset, count);
t.pData->pMemory[count] = 0;
return t;
}
MFString MFString::Lower() const
{
if(!pData)
return *this;
// allocate a new string
MFString t;
t.Reserve(pData->bytes + 1);
t.pData->bytes = pData->bytes;
// copy lower case string
for(size_t a=0; a<pData->bytes + 1; ++a)
t.pData->pMemory[a] = (char)MFToLower(pData->pMemory[a]);
return t;
}
MFString MFString::operator+(const MFString &string) const
{
if(string.IsEmpty())
return *this;
if(IsEmpty())
return string;
size_t bytes = pData->bytes + string.pData->bytes;
MFString t;
t.Reserve(bytes + 1);
MFString_CopyCat(t.pData->pMemory, pData->pMemory, string.pData->pMemory);
t.pData->bytes = bytes;
return t;
}
MFString MFString::operator+(const char *pString) const
{
if(!pString || *pString == 0)
return *this;
if(IsEmpty())
return MFString(pString);
size_t bytes = pData->bytes + MFString_Length(pString);
MFString t;
t.Reserve(bytes + 1);
MFString_CopyCat(t.pData->pMemory, pData->pMemory, pString);
t.pData->bytes = bytes;
return t;
}