projects/stargazer/plugins/configuration/rpcconfig/utils.cpp

   1 #include <string>
   2 #include <cerrno>
   3 #include <cstring>
   4 #include <iconv.h>
   5
   6 #include "utils.h"
   7 #include "common.h"
   8
   9 //-----------------------------------------------------------------------------
  10 std::string IconvString(const std::string & src,
  11                         const std::string & from,
  12                         const std::string & to)
  13 {
  14 if (src.empty())
  15     return std::string();
  16
  17 size_t inBytesLeft = src.length() + 1;
  18 size_t outBytesLeft = src.length() * 2 + 1;
  19
  20 char * inBuf = new char[inBytesLeft];
  21 char * outBuf = new char[outBytesLeft];
  22
  23 strncpy(inBuf, src.c_str(), src.length());
  24
  25 inBuf[src.length()] = 0;
  26
  27 #if defined(FREE_BSD) || defined(FREE_BSD5)
  28 const char * srcPos = inBuf;
  29 #else
  30 char * srcPos = inBuf;
  31 #endif
  32 char * dstPos = outBuf;
  33
  34 iconv_t handle = iconv_open(to.c_str(),
  35                             from.c_str());
  36
  37 if (handle == iconv_t(-1))
  38     {
  39     if (errno == EINVAL)
  40         {
  41         printfd(__FILE__, "IconvString(): iconv from %s to %s failed\n", from.c_str(), to.c_str());
  42         delete[] outBuf;
  43         delete[] inBuf;
  44         return src;
  45         }
  46     else
  47         printfd(__FILE__, "IconvString(): iconv_open error\n");
  48
  49     delete[] outBuf;
  50     delete[] inBuf;
  51     return src;
  52     }
  53
  54 size_t res = iconv(handle,
  55                    &srcPos, &inBytesLeft,
  56                    &dstPos, &outBytesLeft);
  57
  58 if (res == size_t(-1))
  59     {
  60     printfd(__FILE__, "IconvString(): '%s'\n", strerror(errno));
  61
  62     iconv_close(handle);
  63     delete[] outBuf;
  64     delete[] inBuf;
  65     return src;
  66     }
  67
  68 dstPos = 0;
  69
  70 std::string dst(outBuf);
  71
  72 iconv_close(handle);
  73
  74 delete[] outBuf;
  75 delete[] inBuf;
  76
  77 return dst;
  78 }