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// Copyright (c) 2017-2018, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#pragma once
#include <stddef.h>
#include <vector>
#include <string>
namespace epee
{
class wipeable_string
{
public:
wipeable_string() {}
wipeable_string(const wipeable_string &other);
wipeable_string(wipeable_string &&other);
wipeable_string(const std::string &other);
wipeable_string(std::string &&other);
wipeable_string(const char *s);
~wipeable_string();
void wipe();
void push_back(char c);
void pop_back();
const char *data() const noexcept { return buffer.data(); }
size_t size() const noexcept { return buffer.size(); }
bool empty() const noexcept { return buffer.empty(); }
void resize(size_t sz);
void reserve(size_t sz);
void clear();
bool operator==(const wipeable_string &other) const noexcept { return buffer == other.buffer; }
bool operator!=(const wipeable_string &other) const noexcept { return buffer != other.buffer; }
wipeable_string &operator=(wipeable_string &&other);
wipeable_string &operator=(const wipeable_string &other);
static void set_wipe(void *(*f)(void*, size_t)) { wipefunc = f; }
private:
void grow(size_t sz, size_t reserved = 0);
private:
std::vector<char> buffer;
static void *(*wipefunc)(void*, size_t);
};
}
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