fizz::test::BlockWriter Struct Reference

Public Member Functions
size_t	copy (uint8_t *out, const uint8_t *in, size_t len)

Public Attributes
size_t	internalOffset = 0
uint8_t	block [8] = {0}

Detailed Description

Definition at line 94 of file IOBufUtilTest.cpp.

Member Function Documentation

size_t fizz::test::BlockWriter::copy ( uint8_t *  out, const uint8_t *  in, size_t  len  )

inline

Definition at line 95 of file IOBufUtilTest.cpp.

Referenced by fizz::test::TEST().

                                                           {
    if (len + internalOffset < 8) {
      // still not enough for a block
      memcpy(block + internalOffset, in, len);
      internalOffset += len;
      // nothing copied to out
      return 0;
    }
    size_t outOffset = 0;
    // need to copy in block chunks
    auto numToWrite = 8 * ((internalOffset + len) / 8);
    if (internalOffset > 0) {
      memcpy(out, block, internalOffset);
      outOffset += internalOffset;
      numToWrite -= internalOffset;
      internalOffset = 0;
    }

    // copy the rest
    memcpy(out + outOffset, in, numToWrite);
    // check if we need to internal buffer anything left
    if (len > numToWrite) {
      auto numToBuf = len - numToWrite;
      DCHECK(numToBuf < 8);
      memcpy(block, in + numToWrite, numToBuf);
      internalOffset = numToBuf;
    }
    return numToWrite + outOffset;
  }

Member Data Documentation

uint8_t fizz::test::BlockWriter::block[8] = {0}

Definition at line 126 of file IOBufUtilTest.cpp.

size_t fizz::test::BlockWriter::internalOffset = 0

Definition at line 125 of file IOBufUtilTest.cpp.

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The documentation for this struct was generated from the following file:

• proxygen/fizz/fizz/crypto/aead/test/IOBufUtilTest.cpp