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Dividable-by-three instead of next-dividable-by-three

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This commit is contained in:
Daniel J. Hofmann 2016-02-12 18:10:44 -08:00
parent eb6f01e65a
commit 27fe85ac8b
1 changed files with 7 additions and 5 deletions
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12
include/engine/object_encoder.hpp
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@ -47,13 +47,15 @@ template <typename T> std::string encodeBase64(const T &x)
reinterpret_cast<const char *>(&x) + sizeof(T)}; reinterpret_cast<const char *>(&x) + sizeof(T)};
BOOST_ASSERT(!bytes.empty()); BOOST_ASSERT(!bytes.empty());
const auto next_divisible_by_three = ((bytes.size() / 3u) + 1u) * 3u; std::size_t bytes_to_pad{0};
BOOST_ASSERT(next_divisible_by_three >= bytes.size());
while (bytes.size() % 3 != 0)
{
bytes_to_pad += 1;
bytes.push_back(0);
}
const auto bytes_to_pad = next_divisible_by_three - bytes.size();
BOOST_ASSERT(bytes_to_pad == 0 || bytes_to_pad == 1 || bytes_to_pad == 2); BOOST_ASSERT(bytes_to_pad == 0 || bytes_to_pad == 1 || bytes_to_pad == 2);
bytes.insert(end(bytes), bytes_to_pad, 0x00);
BOOST_ASSERT_MSG(0 == bytes.size() % 3, "base64 input data size is not a multiple of 3"); BOOST_ASSERT_MSG(0 == bytes.size() % 3, "base64 input data size is not a multiple of 3");
std::string encoded{detail::Base64FromBinary{bytes.data()}, std::string encoded{detail::Base64FromBinary{bytes.data()},