mirror of https://github.com/aria2/aria2
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2010 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_GZIP_ENCODER_H
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#define D_GZIP_ENCODER_H
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#include "common.h"
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#include <string>
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#include <zlib.h>
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namespace aria2 {
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class GZipEncoder {
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private:
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z_stream* strm_;
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// Internal buffer for deflated data.
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std::string internalBuf_;
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std::string encode(const unsigned char* in, size_t length, int flush);
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// Not implemented
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GZipEncoder& operator<<(char c);
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public:
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GZipEncoder();
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~GZipEncoder();
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// Initializes deflator.
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void init();
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// Feeds NULL-terminated c-string s to deflater. The deflated
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// result is kept in this class.
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GZipEncoder& operator<<(const char* s);
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// Feeds binary data in s to deflater. The deflated result is kept
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// in this class.
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GZipEncoder& operator<<(const std::string& s);
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// Feeds binary data in s with size length to deflater. The
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// deflated result is kept in this class.
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GZipEncoder& write(const char* s, size_t length);
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// Feeds integer to deflator. Before passed to deflator, i is
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// converted to std::string using util::itos(). The deflated result
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// is kept in this class.
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GZipEncoder& operator<<(int64_t i);
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// Feeds binary data pointed by in with size length to deflator and
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// returns compressed output available so far. Don't use this
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// method with operator<< methods.
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std::string encode(const unsigned char* in, size_t length)
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{
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return encode(in, length, Z_NO_FLUSH);
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}
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// Releases allocated resources.
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void release();
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// Returns deflated result kept internally. After this function
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// call, further calls to operator<<() and encode() are not allowed.
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std::string str();
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};
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} // namespace aria2
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#endif // D_GZIP_ENCODER_H
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