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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/base64.h"
#include <stddef.h>
#include "third_party/modp_b64/modp_b64.h"
namespace base {
std::string Base64Encode(span<const uint8_t> input) {
std::string output;
output.resize(modp_b64_encode_len(input.size())); // makes room for null byte
// modp_b64_encode_len() returns at least 1, so output[0] is safe to use.
const size_t output_size = modp_b64_encode(
&(output[0]), reinterpret_cast<const char*>(input.data()), input.size());
output.resize(output_size);
return output;
}
void Base64Encode(const StringPiece& input, std::string* output) {
*output = Base64Encode(base::as_bytes(base::make_span(input)));
}
bool Base64Decode(const StringPiece& input, std::string* output) {
std::string temp;
temp.resize(modp_b64_decode_len(input.size()));
// does not null terminate result since result is binary data!
size_t input_size = input.size();
size_t output_size = modp_b64_decode(&(temp[0]), input.data(), input_size);
if (output_size == MODP_B64_ERROR)
return false;
temp.resize(output_size);
output->swap(temp);
return true;
}
} // namespace base
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