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# base32.cpp

    00001 // base32.cpp - written and placed in the public domain by Frank Palazzolo, based on hex.cpp by Wei Dai
    00002
    00003 #include "pch.h"
    00004 #include "base32.h"
    00005
    00006 NAMESPACE_BEGIN(CryptoPP)
    00007
    00008 static const byte s_vecUpper[] = "ABCDEFGHIJKMNPQRSTUVWXYZ23456789";
    00009 static const byte s_vecLower[] = "abcdefghijkmnpqrstuvwxyz23456789";
    00010
    00011 void Base32Encoder::IsolatedInitialize(const NameValuePairs &parameters)
    00012 {
    00013         bool uppercase = parameters.GetValueWithDefault(Name::Uppercase(), true);
    00014         m_filter->Initialize(CombinedNameValuePairs(
    00015                 parameters,
    00016                 MakeParameters(Name::EncodingLookupArray(), uppercase ? &s_vecUpper[0] : &s_vecLower[0], false)(Name::Log2Base(), 5, true)));
    00017 }
    00018
    00019 void Base32Decoder::IsolatedInitialize(const NameValuePairs &parameters)
    00020 {
    00021         BaseN_Decoder::Initialize(CombinedNameValuePairs(
    00022                 parameters,
    00023                 MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 5, true)));
    00024 }
    00025
    00026 const int *Base32Decoder::GetDefaultDecodingLookupArray()
    00027 {
    00028         static bool s_initialized = false;
    00029         static int s_array[256];
    00030
    00031         if (!s_initialized)
    00032         {
    00033                 InitializeDecodingLookupArray(s_array, s_vecUpper, 32, true);
    00034                 s_initialized = true;
    00035         }
    00036         return s_array;
    00037 }
    00038
    00039 NAMESPACE_END