bool FrontBufferedStream::peek(void* dst, size_t size) const {
// Keep track of the offset so we can return to it.
const size_t start = fOffset;
if (start + size > fBufferSize) {
// This stream is not able to buffer enough.
return false;
}
FrontBufferedStream* nonConstThis = const_cast<FrontBufferedStream*>(this);
SkDEBUGCODE(const size_t bytesRead =) nonConstThis->read(dst, size);
SkASSERT(bytesRead == size);
nonConstThis->fOffset = start;
return true;
}
size_t FrontBufferedStream::peek(void* dst, size_t size) const {
// Keep track of the offset so we can return to it.
const size_t start = fOffset;
if (start >= fBufferSize) {
// This stream is not able to buffer.
return 0;
}
size = SkTMin(size, fBufferSize - start);
FrontBufferedStream* nonConstThis = const_cast<FrontBufferedStream*>(this);
const size_t bytesRead = nonConstThis->read(dst, size);
nonConstThis->fOffset = start;
return bytesRead;
}