util/stream/tempbuf.cpp


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#include "tempbuf.h" 
 
namespace { 
    static inline size_t Next(size_t size) noexcept {
        return size * 2; 
    } 
} 
 
void TTempBufOutput::DoWrite(const void* data, size_t len) {
    if (Y_LIKELY(len <= Left())) {
        Append(data, len); 
    } else { 
        const size_t filled = Filled(); 
 
        TTempBuf buf(Next(filled + len)); 
 
        buf.Append(Data(), filled); 
        buf.Append(data, len); 
 
        static_cast<TTempBuf&>(*this) = buf; 
    } 
}