1 files changed, 0 insertions, 53 deletions
diff --git a/decoder/hg_io.cc b/decoder/hg_io.cc
index 52a8565a..1af8261e 100644
--- a/decoder/hg_io.cc
+++ b/decoder/hg_io.cc
@@ -622,56 +622,3 @@ void HypergraphIO::WriteAsCFG(const Hypergraph& hg) {
   }
 }
 
-namespace B64 {
-
-static const char cb64[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-static const char cd64[]="|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW$$$$$$XYZ[\\]^_`abcdefghijklmnopq";
-
-static void encodeblock(const unsigned char* in, ostream* os, int len) {
-  char out[4];
-  out[0] = cb64[ in[0] >> 2 ];
-  out[1] = cb64[ ((in[0] & 0x03) << 4) | ((in[1] & 0xf0) >> 4) ];
-  out[2] = (len > 1 ? cb64[ ((in[1] & 0x0f) << 2) | ((in[2] & 0xc0) >> 6) ] : '=');
-  out[3] = (len > 2 ? cb64[ in[2] & 0x3f ] : '=');
-  os->write(out, 4);
-}
-
-void b64encode(const char* data, const size_t size, ostream* out) {
-  size_t cur = 0;
-  while(cur < size) {
-    int len = min(static_cast<size_t>(3), size - cur);
-    encodeblock(reinterpret_cast<const unsigned char*>(&data[cur]), out, len);
-    cur += len;
-  }
-}
-
-static void decodeblock(const unsigned char* in, unsigned char* out) {
-  out[0] = (unsigned char ) (in[0] << 2 | in[1] >> 4);
-  out[1] = (unsigned char ) (in[1] << 4 | in[2] >> 2);
-  out[2] = (unsigned char ) (((in[2] << 6) & 0xc0) | in[3]);
-}
-
-bool b64decode(const unsigned char* data, const size_t insize, char* out, const size_t outsize) {
-  size_t cur = 0;
-  size_t ocur = 0;
-  unsigned char in[4];
-  while(cur < insize) {
-    assert(ocur < outsize);
-    for (int i = 0; i < 4; ++i) {
-      unsigned char v = data[cur];
-      v = (unsigned char) ((v < 43 || v > 122) ? '\0' : cd64[ v - 43 ]);
-      if (!v) {
-        cerr << "B64 decode error at offset " << cur << " offending character: " << (int)data[cur] << endl;
-        return false;
-      }
-      v = (unsigned char) ((v == '$') ? '\0' : v - 61);
-      if (v) in[i] = v - 1; else in[i] = 0;
-      ++cur;
-    }
-    decodeblock(in, reinterpret_cast<unsigned char*>(&out[ocur]));
-    ocur += 3;
-  }
-  return true;
-}
-}
-