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55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
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#pragma once
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#ifndef base64_H_
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#define base64_H_
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#include "unicode/uniString.h"
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// no decoding... yet
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namespace base64
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{
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template<typename OUTT, typename ITER>
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OUTT encode(ITER start, ITER finish) throw()
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{
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static const char alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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int shift = 0;
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int accum = 0;
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ITER i = start;
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OUTT result;
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while (i != finish)
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{
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accum <<= 8;
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shift += 8;
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accum |= *(i++);
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while (shift >= 6)
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{
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shift -= 6;
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result.push_back((typename OUTT::value_type)alphabet[(accum >> shift) & 0x3F]);
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}
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}
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if (shift == 4)
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{
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result.push_back((typename OUTT::value_type)alphabet[(accum & 0xF)<<2]);
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result.push_back((typename OUTT::value_type)'=');
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}
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else if (shift == 2)
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{
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result.push_back((typename OUTT::value_type)alphabet[(accum & 0x3)<<4]);
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result.push_back((typename OUTT::value_type)'=');
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result.push_back((typename OUTT::value_type)'=');
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}
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return result;
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}
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template<typename OUTT,typename CONT>
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OUTT encode(const CONT &c) throw()
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{
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return base64::encode<OUTT>(c.begin(), c.end());
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}
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const std::vector<__uint8> decode(std::string const& encoded_string);
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}
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#endif
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