return write(Ptr, Size);
}
- // Write out the data in buffer-sized blocks until the remainder
- // fits within the buffer.
- do {
- size_t NumBytes = OutBufEnd - OutBufCur;
- copy_to_buffer(Ptr, NumBytes);
- flush_nonempty();
- Ptr += NumBytes;
- Size -= NumBytes;
- } while (OutBufCur+Size > OutBufEnd);
+ // If the buffer is empty at this point we have a string that is larger
+ // than the buffer. It's better to write it unbuffered in this case.
+ if (BUILTIN_EXPECT(OutBufCur == OutBufStart, false)) {
+ write_impl(Ptr, Size);
+ return *this;
+ }
+
+ // We don't have enough space in the buffer to fit the string in. Insert as
+ // much as possible, flush and start over with the remainder.
+ size_t NumBytes = OutBufEnd - OutBufCur;
+ copy_to_buffer(Ptr, NumBytes);
+ flush_nonempty();
+ return write(Ptr + NumBytes, Size - NumBytes);
}
copy_to_buffer(Ptr, Size);