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- /* <!-- copyright */
- /*
- * aria2 - The high speed download utility
- *
- * Copyright (C) 2011 Tatsuhiro Tsujikawa
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * In addition, as a special exception, the copyright holders give
- * permission to link the code of portions of this program with the
- * OpenSSL library under certain conditions as described in each
- * individual source file, and distribute linked combinations
- * including the two.
- * You must obey the GNU General Public License in all respects
- * for all of the code used other than OpenSSL. If you modify
- * file(s) with this exception, you may extend this exception to your
- * version of the file(s), but you are not obligated to do so. If you
- * do not wish to do so, delete this exception statement from your
- * version. If you delete this exception statement from all source
- * files in the program, then also delete it here.
- */
- /* copyright --> */
- #ifndef D_IO_FILE_H
- #define D_IO_FILE_H
- #include "OutputFile.h"
- #include <string>
- #include <iosfwd>
- namespace aria2 {
- // This is a wrapper base class intended to provide
- // fopen/fclose/fread/fwrite/fgets functionality.
- class IOFile : public OutputFile {
- private:
- typedef void (IOFile::*unspecified_bool_type)() const;
- void goodState() const {}
- public:
- IOFile() {}
- virtual ~IOFile() {}
- // Returns true if file is opened and ferror returns 0. Otherwise
- // returns false.
- operator unspecified_bool_type() const;
- // wrapper for fread. Using 1 for 2nd argument of fread.
- size_t read(void* ptr, size_t count);
- // wrapper for fwrite. Using 1 for 2nd argument of fwrite.
- size_t write(const void* ptr, size_t count);
- virtual size_t write(const char* str) CXX11_OVERRIDE;
- // wrapper for fgets
- char* gets(char* s, int size);
- // wrapper for fgets, but trailing '\n' is replaced with '\0'.
- char* getsn(char* s, int size);
- // Reads one line and returns it. The last '\n' is removed.
- std::string getLine();
- // wrapper for fclose
- int close();
- // wrapper for fflush
- int flush() CXX11_OVERRIDE;
- // Return true if file is opened && feof(fp_) != 0. Otherwise
- // returns false.
- bool eof();
- // Returns true if file supports ANSI color escape codes.
- bool supportsColor() CXX11_OVERRIDE;
- // Convenient method. Read data to end of file and write them into
- // given stream. Returns written size.
- size_t transfer(std::ostream& out);
- int vprintf(const char* format, va_list va) CXX11_OVERRIDE;
- // Mode for reading
- static const char READ[];
- // Mode for writing
- static const char WRITE[];
- // Mode for append
- static const char APPEND[];
- protected:
- virtual size_t onRead(void* ptr, size_t count) = 0;
- virtual size_t onWrite(const void* ptr, size_t count) = 0;
- virtual char* onGets(char* s, int size) = 0;
- virtual int onVprintf(const char* format, va_list va) = 0;
- virtual int onFlush() = 0;
- virtual int onClose() = 0;
- virtual bool onSupportsColor() = 0;
- virtual bool isError() const = 0;
- virtual bool isEOF() const = 0;
- virtual bool isOpen() const = 0;
- };
- } // namespace aria2
- #endif // D_IO_FILE_H
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