source-engine/external/crypto++-5.61/base64.cpp
FluorescentCIAAfricanAmerican 3bf9df6b27 1
2020-04-22 12:56:21 -04:00

43 lines
1.2 KiB
C++

// base64.cpp - written and placed in the public domain by Wei Dai
#include "pch.h"
#include "base64.h"
NAMESPACE_BEGIN(CryptoPP)
static const byte s_vec[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const byte s_padding = '=';
void Base64Encoder::IsolatedInitialize(const NameValuePairs &parameters)
{
bool insertLineBreaks = parameters.GetValueWithDefault(Name::InsertLineBreaks(), true);
int maxLineLength = parameters.GetIntValueWithDefault(Name::MaxLineLength(), 72);
const char *lineBreak = insertLineBreaks ? "\n" : "";
m_filter->Initialize(CombinedNameValuePairs(
parameters,
MakeParameters(Name::EncodingLookupArray(), &s_vec[0], false)
(Name::PaddingByte(), s_padding)
(Name::GroupSize(), insertLineBreaks ? maxLineLength : 0)
(Name::Separator(), ConstByteArrayParameter(lineBreak))
(Name::Terminator(), ConstByteArrayParameter(lineBreak))
(Name::Log2Base(), 6, true)));
}
const int *Base64Decoder::GetDecodingLookupArray()
{
static volatile bool s_initialized = false;
static int s_array[256];
if (!s_initialized)
{
InitializeDecodingLookupArray(s_array, s_vec, 64, false);
s_initialized = true;
}
return s_array;
}
NAMESPACE_END