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gerrit.rockbox.org / rockbox / 03dd4b92be7dcd5c8ab06da3810887060e06abd5 / . / utils / themeeditor / quazip / ioapi.c
blob: cf29a317fdd901fcf1a8423f38a8145d9899a3e0 [file] [log] [blame]
Robert Bieber7c522842010-07-21 07:45:29 +0000[diff] [blame]1/* ioapi.c -- IO base function header for compress/uncompress .zip
2 files using zlib + zip or unzip API
3
4 Version 1.01e, February 12th, 2005
5
6 Copyright (C) 1998-2005 Gilles Vollant
7*/
8
9#include <stdio.h>
10#include <stdlib.h>
11#include <string.h>
12
13#include "zlib.h"
14#include "ioapi.h"
15
16
17
18/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */
19
20#ifndef SEEK_CUR
21#define SEEK_CUR 1
22#endif
23
24#ifndef SEEK_END
25#define SEEK_END 2
26#endif
27
28#ifndef SEEK_SET
29#define SEEK_SET 0
30#endif
31
32voidpf ZCALLBACK fopen_file_func OF((
33 voidpf opaque,
34 const char* filename,
35 int mode));
36
37uLong ZCALLBACK fread_file_func OF((
38 voidpf opaque,
39 voidpf stream,
40 void* buf,
41 uLong size));
42
43uLong ZCALLBACK fwrite_file_func OF((
44 voidpf opaque,
45 voidpf stream,
46 const void* buf,
47 uLong size));
48
49long ZCALLBACK ftell_file_func OF((
50 voidpf opaque,
51 voidpf stream));
52
53long ZCALLBACK fseek_file_func OF((
54 voidpf opaque,
55 voidpf stream,
56 uLong offset,
57 int origin));
58
59int ZCALLBACK fclose_file_func OF((
60 voidpf opaque,
61 voidpf stream));
62
63int ZCALLBACK ferror_file_func OF((
64 voidpf opaque,
65 voidpf stream));
66
67
68voidpf ZCALLBACK fopen_file_func (opaque, filename, mode)
69 voidpf opaque;
70 const char* filename;
71 int mode;
72{
73 (void) opaque; /* avoid "unused parameter" warning */
74 FILE* file = NULL;
75 const char* mode_fopen = NULL;
76 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
77 mode_fopen = "rb";
78 else
79 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
80 mode_fopen = "r+b";
81 else
82 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
83 mode_fopen = "wb";
84
85 if ((filename!=NULL) && (mode_fopen != NULL))
86 file = fopen(filename, mode_fopen);
87 return file;
88}
89
90
91uLong ZCALLBACK fread_file_func (opaque, stream, buf, size)
92 voidpf opaque;
93 voidpf stream;
94 void* buf;
95 uLong size;
96{
97 (void) opaque; /* avoid "unused parameter" warning */
98 uLong ret;
99 ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
100 return ret;
101}
102
103
104uLong ZCALLBACK fwrite_file_func (opaque, stream, buf, size)
105 voidpf opaque;
106 voidpf stream;
107 const void* buf;
108 uLong size;
109{
110 (void) opaque; /* avoid "unused parameter" warning */
111 uLong ret;
112 ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
113 return ret;
114}
115
116long ZCALLBACK ftell_file_func (opaque, stream)
117 voidpf opaque;
118 voidpf stream;
119{
120 (void) opaque; /* avoid "unused parameter" warning */
121 long ret;
122 ret = ftell((FILE *)stream);
123 return ret;
124}
125
126long ZCALLBACK fseek_file_func (opaque, stream, offset, origin)
127 voidpf opaque;
128 voidpf stream;
129 uLong offset;
130 int origin;
131{
132 (void) opaque; /* avoid "unused parameter" warning */
133 int fseek_origin=0;
134 long ret;
135 switch (origin)
136 {
137 case ZLIB_FILEFUNC_SEEK_CUR :
138 fseek_origin = SEEK_CUR;
139 break;
140 case ZLIB_FILEFUNC_SEEK_END :
141 fseek_origin = SEEK_END;
142 break;
143 case ZLIB_FILEFUNC_SEEK_SET :
144 fseek_origin = SEEK_SET;
145 break;
146 default: return -1;
147 }
148 ret = 0;
149 fseek((FILE *)stream, offset, fseek_origin);
150 return ret;
151}
152
153int ZCALLBACK fclose_file_func (opaque, stream)
154 voidpf opaque;
155 voidpf stream;
156{
157 (void) opaque; /* avoid "unused parameter" warning */
158 int ret;
159 ret = fclose((FILE *)stream);
160 return ret;
161}
162
163int ZCALLBACK ferror_file_func (opaque, stream)
164 voidpf opaque;
165 voidpf stream;
166{
167 (void) opaque; /* avoid "unused parameter" warning */
168 int ret;
169 ret = ferror((FILE *)stream);
170 return ret;
171}
172
173void fill_fopen_filefunc (pzlib_filefunc_def)
174 zlib_filefunc_def* pzlib_filefunc_def;
175{
176 pzlib_filefunc_def->zopen_file = fopen_file_func;
177 pzlib_filefunc_def->zread_file = fread_file_func;
178 pzlib_filefunc_def->zwrite_file = fwrite_file_func;
179 pzlib_filefunc_def->ztell_file = ftell_file_func;
180 pzlib_filefunc_def->zseek_file = fseek_file_func;
181 pzlib_filefunc_def->zclose_file = fclose_file_func;
182 pzlib_filefunc_def->zerror_file = ferror_file_func;
183 pzlib_filefunc_def->opaque = NULL;
184}