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hash-util: make the code work with boost-1.86 #200

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merged 2 commits into from
Aug 27, 2024
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hash-util: make the code work with boost-1.86 #200

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a53822e
hash-util: make the code work with boost-1.86
lzaoral Aug 27, 2024
a6c08ed
hash-util: use the `hex_lower` algorithm
kdudka Aug 27, 2024
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16 changes: 7 additions & 9 deletions src/lib/hash-util.hh
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,6 @@
#include <vector>

#include <boost/algorithm/hex.hpp>
#include <boost/algorithm/string.hpp>

/// compute TEng hash of `src` and return it as hex-encoded string
template <typename TEng, typename TSrc>
Expand All @@ -31,19 +30,18 @@ std::string hexHashStr(const TSrc &src)
TEng eng;
eng.process_bytes(src.data(), src.size());

// export the hash as an array of unsigned int
typename TEng::digest_type dst;
// export the hash as an array
using TDst = typename TEng::digest_type;
TDst dst;
eng.get_digest(dst);

// convert the hash to a vector of unsigned int
// convert the hash to a vector
static const size_t len = sizeof(dst) / sizeof(dst[0]);
const std::vector<unsigned> hash(dst, dst + len);
using TElem = typename std::remove_extent<TDst>::type;
const std::vector<TElem> hash(dst, dst + len);

// convert the hash to a hex string
std::string result;
boost::algorithm::hex(hash.begin(), hash.end(), back_inserter(result));

// convert uppercase letters to lowercase
boost::algorithm::to_lower(result);
boost::algorithm::hex_lower(hash.begin(), hash.end(), back_inserter(result));
return result;
}