void
BString::_Init(const char* src, int32 length)
{
fPrivateData = _Clone(src, length);
if (fPrivateData == NULL)
fPrivateData = _Clone(NULL, 0);
}
/*! Makes this string writable, and resizes the buffer to \a length bytes (not
including the terminating null).
@param length The length of the new buffer in bytes.
@param copy If true, the current string will be copied into the new string.
*/
status_t
BString::_MakeWritable(int32 length, bool copy)
{
char* newData = NULL;
if (atomic_get(&_ReferenceCount()) > 1) {
// we might share our data with someone else
if (copy)
newData = _Clone(fPrivateData, length);
else
newData = _Allocate(length);
if (newData == NULL)
return B_NO_MEMORY;
if (atomic_add(&_ReferenceCount(), -1) == 1) {
// someone else left, we were the last owner
_FreePrivateData();
}
} else {
// we don't share our data with someone else
newData = _Resize(length);
if (newData == NULL)
return B_NO_MEMORY;
}
fPrivateData = newData;
return B_OK;
}
/*! Detaches this string from an eventually shared fPrivateData, ie. this makes
this string writable.
*/
status_t
BString::_MakeWritable()
{
if (atomic_get(&_ReferenceCount()) > 1) {
// It might be shared, and this requires special treatment
char* newData = _Clone(fPrivateData, Length());
if (atomic_add(&_ReferenceCount(), -1) == 1) {
// someone else left, we were the last owner
_FreePrivateData();
}
if (newData == NULL)
return B_NO_MEMORY;
fPrivateData = newData;
}
return B_OK;
}
/* nsIPrintSettings clone (); */
NS_IMETHODIMP
nsPrintSettings::Clone(nsIPrintSettings **_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
return _Clone(_retval);
}
