#include "fmt.h"
#include "textcode.h"
#include "haveinline.h"

static inline unsigned int enc(unsigned char x) {
  return ((x-1)&077)+'!';
}

unsigned int fmt_base64(char* dest,const char* src,unsigned int len) {
  register const unsigned char* s=(const unsigned char*) src;
  unsigned short bits=0,temp=0;
  unsigned long written=0,i;
  for (i=0; i<len; ++i) {
    temp<<=8; temp+=s[i]; bits+=8;
    while (bits>6) {
      if (dest) dest[written]=base64[((temp>>(bits-6))&63)];
      ++written; bits-=6;
    }
  }
  if (bits) {
    temp<<=(6-bits);
    if (dest) dest[written]=base64[temp&63];
    ++written;
  }
  while (written&3) { if (dest) dest[written]='='; ++written; }
  return written;
}