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`constexpr` base64 length calculators (#1652)

This commit is contained in:
Muhammad 2023-07-05 10:25:33 +03:00 committed by GitHub
parent 3c82dcb491
commit 34a5c37974
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2 changed files with 8 additions and 13 deletions
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11
lib/inc/drogon/utils/Utilities.h
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@ -102,8 +102,10 @@ DROGON_EXPORT std::set<std::string> splitStringToSet(
DROGON_EXPORT std::string getUuid();
/// Get the encoded length of base64.
DROGON_EXPORT size_t base64EncodedLength(unsigned int in_len,
bool padded = true);
constexpr size_t base64EncodedLength(unsigned int in_len, bool padded = true)
{
return padded ? ((in_len + 3 - 1) / 3) * 4 : (in_len * 8 + 6 - 1) / 6;
}
/// Encode the string to base64 format.
DROGON_EXPORT std::string base64Encode(const unsigned char *bytes_to_encode,
@ -135,7 +137,10 @@ inline std::string base64EncodeUnpadded(string_view data, bool url_safe = false)
}
/// Get the decoded length of base64.
DROGON_EXPORT size_t base64DecodedLength(unsigned int in_len);
constexpr size_t base64DecodedLength(unsigned int in_len)
{
return (in_len * 3) / 4;
}
/// Decode the base64 format string.
DROGON_EXPORT std::string base64Decode(string_view encoded_string);

10
lib/src/Utilities.cc
View File

@ -395,11 +395,6 @@ std::string getUuid()
#endif
}
size_t base64EncodedLength(unsigned int in_len, bool padded)
{
return padded ? ((in_len + 3 - 1) / 3) * 4 : (in_len * 8 + 6 - 1) / 6;
}
std::string base64Encode(const unsigned char *bytes_to_encode,
unsigned int in_len,
bool url_safe,
@ -460,11 +455,6 @@ std::string base64EncodeUnpadded(const unsigned char *bytes_to_encode,
return base64Encode(bytes_to_encode, in_len, url_safe, false);
}
size_t base64DecodedLength(unsigned int in_len)
{
return (in_len * 3) / 4;
}
std::vector<char> base64DecodeToVector(string_view encoded_string)
{
auto in_len = encoded_string.size();