vg_binstr.h

   1 #ifndef VG_BINSTR
   2 #define VG_BINSTR
   3
   4 /* dead simple.. 4 bits/character encoding */
   5
   6 #include "vg_stdint.h"
   7
   8 #define VG_BINSTR_BASECHAR 0x41
   9
  10 static void vg_str_bin( const void *txt, void *bin, int size )
  11 {
  12    const u8 *src = txt;
  13          u8 *dst = bin;
  14
  15    for( u32 i=0; i<size/2; i++ )
  16    {
  17       dst[i]  = (src[i*2+0]-VG_BINSTR_BASECHAR);
  18       dst[i] |= (src[i*2+1]-VG_BINSTR_BASECHAR)<<4u;
  19    }
  20 }
  21
  22 static void vg_bin_str( const void *bin, void *txt, u32 size )
  23 {
  24          u8 *dst = txt;
  25    const u8 *src = bin;
  26
  27    for( u32 i=0; i<size; i++ )
  28    {
  29       dst[i*2+0] = VG_BINSTR_BASECHAR + ((src[i]    ) & 0xf);
  30       dst[i*2+1] = VG_BINSTR_BASECHAR + ((src[i]>>4u) & 0xf);
  31    }
  32 }
  33
  34 #endif /* VG_BINSTR */