#include "base64stream.h"
namespace pdf2htmlEX {
using std::ostream;
ostream & base64stream::dumpto(ostream & out)
{
unsigned char buf[3];
while(in.read((char*)buf, 3))
{
out << base64_encoding[(buf[0] & 0xfc)>>2]
<< base64_encoding[((buf[0] & 0x03)<<4) | ((buf[1] & 0xf0)>>4)]
<< base64_encoding[((buf[1] & 0x0f)<<2) | ((buf[2] & 0xc0)>>6)]
<< base64_encoding[(buf[2] & 0x3f)];
}
auto cnt = in.gcount();
if(cnt > 0)
{
for(int i = cnt; i < 3; ++i)
buf[i] = 0;
out << base64_encoding[(buf[0] & 0xfc)>>2]
<< base64_encoding[((buf[0] & 0x03)<<4) | ((buf[1] & 0xf0)>>4)];
if(cnt > 1)
{
out << base64_encoding[(buf[1] & 0x0f)<<2];
}
else
{
out << '=';
}
out << '=';
}
return out;
}
const char * base64stream::base64_encoding = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
ostream & operator << (ostream & out, base64stream & bf) { return bf.dumpto(out); }
ostream & operator << (ostream & out, base64stream && bf) { return bf.dumpto(out); }
} //namespace pdf2htmlEX