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78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
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/*
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Copyright (C) 2010, Michael Pruett. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef FILE_H
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#define FILE_H
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#include "Shared.h"
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#include <sys/types.h>
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typedef struct _AFvirtualfile AFvirtualfile;
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class File : public Shared<File>
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{
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public:
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enum AccessMode
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{
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ReadAccess,
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WriteAccess
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};
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enum SeekOrigin
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{
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SeekFromBeginning,
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SeekFromCurrent,
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SeekFromEnd
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};
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static File *open(const char *path, AccessMode mode);
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static File *create(int fd, AccessMode mode);
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static File *create(AFvirtualfile *vf, AccessMode mode);
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virtual ~File();
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virtual int close() = 0;
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virtual ssize_t read(void *data, size_t nbytes) = 0;
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virtual ssize_t write(const void *data, size_t nbytes) = 0;
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virtual off_t length() = 0;
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virtual off_t seek(off_t offset, SeekOrigin origin) = 0;
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virtual off_t tell() = 0;
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bool canSeek();
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AccessMode accessMode() const { return m_accessMode; }
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private:
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AccessMode m_accessMode;
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protected:
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File(AccessMode mode) : m_accessMode(mode) { }
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};
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#endif // FILE_H
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