// assign a repeated char to a string
string &string :: assign (char ch, size_t n)
{
if (n == NPOS) _Xlen();
if (_Grow (n, 1)) { // copy non-empty string
memset (m_pPtr, ch, n);
m_pPtr[m_iLen = n] = '\0';
}
return (*this);
}
VOID ACLStr::_Concat
(
IN size_t nStrLen,
IN LPCTSTR pString
)
{
if (nStrLen > 0 &&
pString)
{
_Grow(nStrLen);
STRNCAT_S(_string, _realLength, pString, nStrLen);
}
} // ::concat
bool istream::WriteBytes(const BYTE *pDataIn, int cCount)
{
bool fRet = true;
if ((_iIndex + cCount) >= _cbSize)
{
fRet = _Grow((DWORD)cCount);
}
if (fRet)
{
CopyMemory(&_pData[_iIndex], pDataIn, (size_t)cCount);
_iIndex += (DWORD)cCount;
_cbSizeValid = _iIndex;
}
return fRet;
}
bool istream::WriteByte(BYTE b)
{
bool fRet = TRUE;
if (_iIndex >= _cbSize)
{
fRet = _Grow(1);
}
if (fRet)
{
_pData[_iIndex] = b;
_iIndex++;
_cbSizeValid = _iIndex;
}
return fRet;
}
// insert a substring into a string
string &string :: insert (size_t p0, const string &str, size_t pos, size_t ns)
{
if (m_iLen < p0 || str.length() < pos) _Xran();
size_t n = str.length() - pos;
if ( n < ns) ns = n;
if (NPOS - m_iLen <= ns) _Xlen();
if (0 < ns && _Grow (n = m_iLen + ns)) {
// insert to make non-empty string
memmove (m_pPtr + p0 + ns, m_pPtr + p0, m_iLen - p0);
memcpy (m_pPtr + p0, &str.c_str()[pos], ns);
m_pPtr[m_iLen = n] = '\0';
}
return (*this);
}
// replace with a repeated char in a string
string &string :: replace (size_t p0, size_t n0, const string &str,
size_t pos, size_t ns)
{
if (m_iLen < p0 || str.length() < pos) _Xran();
size_t n = str.length() - pos;
if (n < ns) ns = n;
if (NPOS - ns <= m_iLen - n0) _Xlen();
size_t nm = m_iLen - n0 - p0;
if (ns < n0)
memmove (m_pPtr + p0 + ns, m_pPtr + p0 + n0, nm);
if ((0 < ns || 0 < n0) && _Grow (n = m_iLen + ns - n0)) {
// replace to make non-empty string
if (n0 < ns)
memmove (m_pPtr + p0 + ns, m_pPtr + p0 + n0, nm);
memcpy (m_pPtr + p0, &str.c_str()[pos], ns);
m_pPtr[m_iLen = n] = '\0';
}
return (*this);
}
