// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012-2022 OpenVPN Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License Version 3
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program in the COPYING file.
// If not, see .
#pragma once
#include
namespace openvpn {
// Iterate over the lines in a buffer by returning
// a sub-buffer for each line. Zero-copy.
class BufferLineIterator
{
public:
BufferLineIterator(const ConstBuffer &buf)
: src(buf)
{
}
// Returns a zero-length buffer at end of iteration
ConstBuffer next()
{
return src.read_alloc_buf(line_len());
}
private:
size_t line_len() const
{
const unsigned char *const data = src.c_data();
size_t i = 0;
while (i < src.size())
if (data[i++] == '\n')
break;
return i;
}
ConstBuffer src;
};
} // namespace openvpn