src/TortoisePlink/utils/base64_decode.c

   1 #include "misc.h"
   2
   3 void base64_decode_bs(BinarySink *bs, ptrlen input)
   4 {
   5     BinarySource src[1];
   6     BinarySource_BARE_INIT_PL(src, input);
   7
   8     while (get_avail(src)) {
   9         char b64atom[4];
  10         unsigned char binatom[3];
  11
  12         for (size_t i = 0; i < 4 ;) {
  13             char c = get_byte(src);
  14             if (get_err(src))
  15                 c = '=';
  16             if (c == '\n' || c == '\r')
  17                 continue;
  18             b64atom[i++] = c;
  19         }
  20
  21         put_data(bs, binatom, base64_decode_atom(b64atom, binatom));
  22     }
  23 }
  24
  25 void base64_decode_fp(FILE *fp, ptrlen input)
  26 {
  27     stdio_sink ss;
  28     stdio_sink_init(&ss, fp);
  29     base64_decode_bs(BinarySink_UPCAST(&ss), input);
  30 }
  31
  32 strbuf *base64_decode_sb(ptrlen input)
  33 {
  34     strbuf *sb = strbuf_new_nm();
  35     base64_decode_bs(BinarySink_UPCAST(sb), input);
  36     return sb;
  37 }