src/hex.cpp

   1 #include "../include/hex.h"\r
   2 \r
   3 #ifdef XMEM\r
   4         #include <xmem.h>\r
   5 #endif\r
   6 \r
   7 namespace Hex\r
   8 {\r
   9         \r
  10 static const std::string hexchars="0123456789ABCDEF";\r
  11 \r
  12 const bool Encode(const std::vector<unsigned char> &data, std::string &encoded)\r
  13 {\r
  14         for(std::vector<unsigned char>::const_iterator i=data.begin(); i!=data.end(); i++)\r
  15         {\r
  16                 encoded.push_back(hexchars[(((*i)>>4) & 0x0F)]);\r
  17                 encoded.push_back(hexchars[((*i) & 0x0F)]);\r
  18         }\r
  19         return true;\r
  20 }\r
  21 \r
  22 const bool Decode(const std::string &encoded, std::vector<unsigned char> &data)\r
  23 {\r
  24 \r
  25         std::string::size_type pos=0;\r
  26         unsigned char byte;\r
  27         int bytepart=0;\r
  28         \r
  29         pos=encoded.find_first_of(hexchars);\r
  30         \r
  31         while(pos!=std::string::npos)\r
  32         {\r
  33                 if(bytepart==0)\r
  34                 {\r
  35                         byte=(hexchars.find(encoded[pos]) << 4) & 0xF0;\r
  36                         bytepart=1;\r
  37                 }\r
  38                 else\r
  39                 {\r
  40                         byte|=hexchars.find(encoded[pos]) & 0x0F;\r
  41                         data.push_back(byte);\r
  42                         bytepart=0;\r
  43                 }\r
  44                 pos=encoded.find_first_of(hexchars,pos+1);\r
  45         }\r
  46         return true;\r
  47 }\r
  48 \r
  49 }       // namespace\r