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Added base64 Encore & Decode function

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This commit is contained in:
Antoine Pilote
2024-08-05 23:29:09 -04:00
parent 1995d429ca
commit f392ded8b3
2 changed files with 42 additions and 0 deletions
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39
Nuake/src/Core/String.cpp
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@@ -99,4 +99,43 @@ namespace Nuake
return result;
}
std::string String::Base64Encode(const std::vector<uint8_t>& data)
{
static const char* chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
std::string result;
int val = 0, valb = -6;
for (uint8_t c : data)
{
val = (val << 8) + c;
valb += 8;
while (valb >= 0)
{
result.push_back(chars[(val >> valb) & 0x3F]);
valb -= 6;
}
}
if (valb > -6) result.push_back(chars[((val << 8) >> (valb + 8)) & 0x3F]);
while (result.size() % 4) result.push_back('=');
return result;
}
std::vector<uint8_t> String::Base64Decode(const std::string& data)
{
static const std::string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
std::vector<uint8_t> out;
std::vector<int> T(256, -1);
for (int i = 0; i < 64; i++) T[chars[i]] = i;
int val = 0, valb = -8;
for (unsigned char c : data)
{
if (T[c] == -1) break;
val = (val << 6) + T[c];
valb += 6;
if (valb >= 0)
{
out.push_back(uint8_t((val >> valb) & 0xFF));
valb -= 8;
}
}
return out;
}
}

3
Nuake/src/Core/String.h
View File

@@ -21,5 +21,8 @@ namespace Nuake
static float ToFloat(const std::string& string);
static std::string ToUpper(const std::string& string);
static std::string ToLower(const std::string& string);
static std::string Base64Encode(const std::vector<uint8_t>& data);
static std::vector<uint8_t> Base64Decode(const std::string& data);
};
}