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/**
* Copyright (c) 2021, Timothy Stack
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Timothy Stack 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 REGENTS 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 REGENTS 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.
*
* @file lnav.gzip.hh
*/
#ifndef lnav_gzip_hh
#define lnav_gzip_hh
#include <string>
#include <sys/time.h>
#include "auto_mem.hh"
#include "result.h"
namespace lnav {
namespace gzip {
struct header {
timeval h_mtime{};
auto_buffer h_extra{auto_buffer::alloc(0)};
std::string h_name;
std::string h_comment;
bool empty() const
{
return this->h_mtime.tv_sec == 0 && this->h_extra.empty()
&& this->h_name.empty() && this->h_comment.empty();
}
};
bool is_gzipped(const char* buffer, size_t len);
Result<auto_buffer, std::string> compress(const void* input, size_t len);
Result<auto_buffer, std::string> uncompress(const std::string& src,
const void* buffer,
size_t size);
} // namespace gzip
} // namespace lnav
#endif
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