110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
/* -*-C++-*- $NetBSD: file.h,v 1.6 2008/04/28 20:23:20 martin Exp $ */
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/*-
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* Copyright (c) 1996, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matthias Drochner. and UCHIYAMA Yasushi.
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*
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _HPCBOOT_FILE_H_
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#define _HPCBOOT_FILE_H_
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#include <hpcboot.h>
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class Console;
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struct z_stream_s;
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class File {
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protected:
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Console *&_cons;
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BOOL _debug;
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BOOL _to_ascii(char *, const TCHAR *, size_t);
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char _ascii_filename[MAX_PATH];
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public:
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File(Console *&cons) : _cons(cons) { /* NO-OP */ }
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virtual ~File() { /* NO-OP */ }
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BOOL &setDebug(void) { return _debug; }
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virtual BOOL setRoot(TCHAR *) = 0;
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virtual BOOL open(const TCHAR *, uint32_t = OPEN_EXISTING) = 0;
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virtual size_t size(void) = 0;
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virtual size_t realsize(void) { return size(); };
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virtual BOOL close(void) = 0;
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virtual size_t read(void *, size_t, off_t = -1) = 0;
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virtual size_t write(const void *, size_t, off_t = -1) = 0;
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virtual BOOL seek(off_t) = 0;
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};
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class FileManager : public File {
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// GZIP staff
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#define Z_BUFSIZE 1024
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private:
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enum flags {
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ASCII_FLAG = 0x01, /* bit 0 set: file probably ascii text */
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HEAD_CRC = 0x02, /* bit 1 set: header CRC present */
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EXTRA_FIELD = 0x04, /* bit 2 set: extra field present */
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ORIG_NAME = 0x08, /* bit 3 set: original file name present */
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COMMENT = 0x10, /* bit 4 set: file comment present */
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RESERVED = 0xE0 /* bits 5..7: reserved */
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};
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struct z_stream_s *_stream;
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int _gz_magic[2];
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int _z_err; /* error code for last stream operation */
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int _z_eof; /* set if end of input file */
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uint8_t _inbuf[Z_BUFSIZE]; /* input buffer */
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uint32_t _crc; /* crc32 of uncompressed data */
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BOOL _compressed;
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void _reset(void);
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int _get_byte(void);
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uint32_t _get_long(void);
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void _check_header(void);
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size_t _skip_compressed(off_t);
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off_t _cur_ofs;
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private:
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File *_file;
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public:
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FileManager(Console *&, enum FileOps);
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virtual ~FileManager(void);
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BOOL setRoot(TCHAR *);
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BOOL open(const TCHAR *, uint32_t);
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size_t size(void);
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size_t realsize(void);
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BOOL close(void);
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size_t read(void *, size_t, off_t = -1);
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size_t write(const void *, size_t, off_t = -1);
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BOOL seek(off_t);
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size_t _read(void *, size_t);
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};
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#endif //_HPCBOOT_FILE_H_
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