base/base64.cc

   1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/base64.h"
   6
   7 #include "third_party/modp_b64/modp_b64.h"
   8
   9 namespace base {
  10
  11 bool Base64Encode(const std::string& input, std::string* output) {
  12   std::string temp;
  13   temp.resize(modp_b64_encode_len(input.size()));  // makes room for null byte
  14
  15   // null terminates result since result is base64 text!
  16   int input_size = static_cast<int>(input.size());
  17   int output_size= modp_b64_encode(&(temp[0]), input.data(), input_size);
  18   if (output_size < 0)
  19     return false;
  20
  21   temp.resize(output_size);  // strips off null byte
  22   output->swap(temp);
  23   return true;
  24 }
  25
  26 bool Base64Decode(const std::string& input, std::string* output) {
  27   std::string temp;
  28   temp.resize(modp_b64_decode_len(input.size()));
  29
  30   // does not null terminate result since result is binary data!
  31   int input_size = static_cast<int>(input.size());
  32   int output_size = modp_b64_decode(&(temp[0]), input.data(), input_size);
  33   if (output_size < 0)
  34     return false;
  35
  36   temp.resize(output_size);
  37   output->swap(temp);
  38   return true;
  39 }
  40
  41 }  // namespace base