file.h revision 1.6 1 1.6 martin /* -*-C++-*- $NetBSD: file.h,v 1.6 2008/04/28 20:23:20 martin Exp $ */
2 1.1 uch
3 1.1 uch /*-
4 1.1 uch * Copyright (c) 1996, 2001 The NetBSD Foundation, Inc.
5 1.1 uch * All rights reserved.
6 1.1 uch *
7 1.1 uch * This code is derived from software contributed to The NetBSD Foundation
8 1.1 uch * by Matthias Drochner. and UCHIYAMA Yasushi.
9 1.1 uch *
10 1.1 uch * Redistribution and use in source and binary forms, with or without
11 1.1 uch * modification, are permitted provided that the following conditions
12 1.1 uch * are met:
13 1.1 uch * 1. Redistributions of source code must retain the above copyright
14 1.1 uch * notice, this list of conditions and the following disclaimer.
15 1.1 uch * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 uch * notice, this list of conditions and the following disclaimer in the
17 1.1 uch * documentation and/or other materials provided with the distribution.
18 1.1 uch *
19 1.1 uch * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.1 uch * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.1 uch * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.1 uch * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.1 uch * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.1 uch * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.1 uch * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.1 uch * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.1 uch * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.1 uch * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.1 uch * POSSIBILITY OF SUCH DAMAGE.
30 1.1 uch */
31 1.1 uch
32 1.1 uch #ifndef _HPCBOOT_FILE_H_
33 1.3 uch #define _HPCBOOT_FILE_H_
34 1.1 uch
35 1.1 uch #include <hpcboot.h>
36 1.1 uch
37 1.1 uch class Console;
38 1.1 uch struct z_stream_s;
39 1.1 uch
40 1.1 uch class File {
41 1.1 uch protected:
42 1.1 uch Console *&_cons;
43 1.1 uch BOOL _debug;
44 1.1 uch BOOL _to_ascii(char *, const TCHAR *, size_t);
45 1.1 uch char _ascii_filename[MAX_PATH];
46 1.1 uch
47 1.1 uch public:
48 1.1 uch File(Console *&cons) : _cons(cons) { /* NO-OP */ }
49 1.1 uch virtual ~File() { /* NO-OP */ }
50 1.1 uch BOOL &setDebug(void) { return _debug; }
51 1.3 uch
52 1.1 uch virtual BOOL setRoot(TCHAR *) = 0;
53 1.5 uwe virtual BOOL open(const TCHAR *, uint32_t = OPEN_EXISTING) = 0;
54 1.1 uch virtual size_t size(void) = 0;
55 1.2 uwe virtual size_t realsize(void) { return size(); };
56 1.1 uch virtual BOOL close(void) = 0;
57 1.1 uch virtual size_t read(void *, size_t, off_t = -1) = 0;
58 1.1 uch virtual size_t write(const void *, size_t, off_t = -1) = 0;
59 1.1 uch virtual BOOL seek(off_t) = 0;
60 1.1 uch };
61 1.1 uch
62 1.1 uch class FileManager : public File {
63 1.1 uch // GZIP staff
64 1.3 uch #define Z_BUFSIZE 1024
65 1.1 uch private:
66 1.1 uch enum flags {
67 1.1 uch ASCII_FLAG = 0x01, /* bit 0 set: file probably ascii text */
68 1.1 uch HEAD_CRC = 0x02, /* bit 1 set: header CRC present */
69 1.1 uch EXTRA_FIELD = 0x04, /* bit 2 set: extra field present */
70 1.1 uch ORIG_NAME = 0x08, /* bit 3 set: original file name present */
71 1.1 uch COMMENT = 0x10, /* bit 4 set: file comment present */
72 1.1 uch RESERVED = 0xE0 /* bits 5..7: reserved */
73 1.1 uch };
74 1.1 uch
75 1.1 uch struct z_stream_s *_stream;
76 1.1 uch int _gz_magic[2];
77 1.1 uch int _z_err; /* error code for last stream operation */
78 1.1 uch int _z_eof; /* set if end of input file */
79 1.5 uwe uint8_t _inbuf[Z_BUFSIZE]; /* input buffer */
80 1.5 uwe uint32_t _crc; /* crc32 of uncompressed data */
81 1.1 uch BOOL _compressed;
82 1.1 uch
83 1.1 uch void _reset(void);
84 1.1 uch int _get_byte(void);
85 1.5 uwe uint32_t _get_long(void);
86 1.1 uch void _check_header(void);
87 1.2 uwe size_t _skip_compressed(off_t);
88 1.1 uch
89 1.1 uch off_t _cur_ofs;
90 1.1 uch
91 1.1 uch private:
92 1.1 uch File *_file;
93 1.1 uch
94 1.1 uch public:
95 1.1 uch FileManager(Console *&, enum FileOps);
96 1.1 uch virtual ~FileManager(void);
97 1.1 uch
98 1.1 uch BOOL setRoot(TCHAR *);
99 1.5 uwe BOOL open(const TCHAR *, uint32_t);
100 1.1 uch size_t size(void);
101 1.2 uwe size_t realsize(void);
102 1.1 uch BOOL close(void);
103 1.1 uch size_t read(void *, size_t, off_t = -1);
104 1.1 uch size_t write(const void *, size_t, off_t = -1);
105 1.1 uch BOOL seek(off_t);
106 1.1 uch size_t _read(void *, size_t);
107 1.1 uch };
108 1.1 uch
109 1.1 uch #endif //_HPCBOOT_FILE_H_
110