Function GetBlock

library/cpp/on_disk/chunks/chunked_helpers.cpp:5–11

#include "chunked_helpers.h"

TBlob GetBlock(const TBlob& blob, size_t index) {
    TChunkedDataReader reader(blob);
    if (index >= reader.GetBlocksCount())
        ythrow yexception() << "index " << index << " is >= than block count " << reader.GetBlocksCount();
    size_t begin = (const char*)reader.GetBlock(index) - (const char*)blob.Data();
    return blob.SubBlob(begin, begin + reader.GetBlockLen(index));
}

/*************************** TNamedChunkedDataReader ***************************/