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// base64.cpp - written and placed in the public domain by Wei Dai
#include "pch.h"
#include "base64.h"
NAMESPACE_BEGIN(CryptoPP)
// Base64
static const byte s_stdVec[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
// Base64URL
static const byte s_urlVec[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
static const byte s_padding = '=';
void Base64Encoder::IsolatedInitialize(const NameValuePairs ¶meters)
{
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_stdVec[0], false)
(Name::PaddingByte(), s_padding)
(Name::GroupSize(), insertLineBreaks ? maxLineLength : 0)
(Name::Separator(), ConstByteArrayParameter(lineBreak))
(Name::Terminator(), ConstByteArrayParameter(lineBreak))
(Name::Log2Base(), 6, true)));
}
void Base64URLEncoder::IsolatedInitialize(const NameValuePairs ¶meters)
{
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_urlVec[0], false)
(Name::PaddingByte(), s_padding)
(Name::GroupSize(), insertLineBreaks ? maxLineLength : 0)
(Name::Separator(), ConstByteArrayParameter(lineBreak))
(Name::Terminator(), ConstByteArrayParameter(lineBreak))
(Name::Log2Base(), 6, true)));
}
void Base64Decoder::IsolatedInitialize(const NameValuePairs ¶meters)
{
BaseN_Decoder::IsolatedInitialize(CombinedNameValuePairs(
parameters,
MakeParameters(Name::DecodingLookupArray(), GetDecodingLookupArray(), false)(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_stdVec, 64, false);
s_initialized = true;
}
return s_array;
}
void Base64URLDecoder::IsolatedInitialize(const NameValuePairs ¶meters)
{
BaseN_Decoder::IsolatedInitialize(CombinedNameValuePairs(
parameters,
MakeParameters(Name::DecodingLookupArray(), GetDecodingLookupArray(), false)(Name::Log2Base(), 6, true)));
}
const int *Base64URLDecoder::GetDecodingLookupArray()
{
static volatile bool s_initialized = false;
static int s_array[256];
if (!s_initialized)
{
InitializeDecodingLookupArray(s_array, s_urlVec, 64, false);
s_initialized = true;
}
return s_array;
}
NAMESPACE_END
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