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size_t ByteStream::readat ( void *  buffer,
size_t  sz,
int  pos 
) [inline, virtual, inherited]

Reads data from a random position. This function reads at most sz# bytes at position pos# into buffer# and returns the actual number of bytes read. The current position is unchanged.

Reimplemented in ByteStream::Memory.

Definition at line 344 of file ByteStream.h.

References ByteStream::readall(), ByteStream::seek(), and ByteStream::tell().

Referenced by ByteStream::Memory::read().

  size_t retval;
  long tpos=tell();
  seek(pos, SEEK_SET, true);
  seek(tpos, SEEK_SET, true);
  return retval;

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