source: trunk/minix/lib/zlib-1.2.3/contrib/minizip/iowin32.c@ 10

Last change on this file since 10 was 9, checked in by Mattia Monga, 14 years ago

Minix 3.1.2a
File size: 6.3 KB
Line 
1/* iowin32.c -- IO base function header for compress/uncompress .zip
2 files using zlib + zip or unzip API
3 This IO API version uses the Win32 API (for Microsoft Windows)
4
5 Version 1.01e, February 12th, 2005
6
7 Copyright (C) 1998-2005 Gilles Vollant
8*/
9
10#include <stdlib.h>
11
12#include "zlib.h"
13#include "ioapi.h"
14#include "iowin32.h"
15
16#ifndef INVALID_HANDLE_VALUE
17#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
18#endif
19
20#ifndef INVALID_SET_FILE_POINTER
21#define INVALID_SET_FILE_POINTER ((DWORD)-1)
22#endif
23
24voidpf ZCALLBACK win32_open_file_func OF((
25 voidpf opaque,
26 const char* filename,
27 int mode));
28
29uLong ZCALLBACK win32_read_file_func OF((
30 voidpf opaque,
31 voidpf stream,
32 void* buf,
33 uLong size));
34
35uLong ZCALLBACK win32_write_file_func OF((
36 voidpf opaque,
37 voidpf stream,
38 const void* buf,
39 uLong size));
40
41long ZCALLBACK win32_tell_file_func OF((
42 voidpf opaque,
43 voidpf stream));
44
45long ZCALLBACK win32_seek_file_func OF((
46 voidpf opaque,
47 voidpf stream,
48 uLong offset,
49 int origin));
50
51int ZCALLBACK win32_close_file_func OF((
52 voidpf opaque,
53 voidpf stream));
54
55int ZCALLBACK win32_error_file_func OF((
56 voidpf opaque,
57 voidpf stream));
58
59typedef struct
60{
61 HANDLE hf;
62 int error;
63} WIN32FILE_IOWIN;
64
65voidpf ZCALLBACK win32_open_file_func (opaque, filename, mode)
66 voidpf opaque;
67 const char* filename;
68 int mode;
69{
70 const char* mode_fopen = NULL;
71 DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
72 HANDLE hFile = 0;
73 voidpf ret=NULL;
74
75 dwDesiredAccess = dwShareMode = dwFlagsAndAttributes = 0;
76
77 if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
78 {
79 dwDesiredAccess = GENERIC_READ;
80 dwCreationDisposition = OPEN_EXISTING;
81 dwShareMode = FILE_SHARE_READ;
82 }
83 else
84 if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
85 {
86 dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
87 dwCreationDisposition = OPEN_EXISTING;
88 }
89 else
90 if (mode & ZLIB_FILEFUNC_MODE_CREATE)
91 {
92 dwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
93 dwCreationDisposition = CREATE_ALWAYS;
94 }
95
96 if ((filename!=NULL) && (dwDesiredAccess != 0))
97 hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL,
98 dwCreationDisposition, dwFlagsAndAttributes, NULL);
99
100 if (hFile == INVALID_HANDLE_VALUE)
101 hFile = NULL;
102
103 if (hFile != NULL)
104 {
105 WIN32FILE_IOWIN w32fiow;
106 w32fiow.hf = hFile;
107 w32fiow.error = 0;
108 ret = malloc(sizeof(WIN32FILE_IOWIN));
109 if (ret==NULL)
110 CloseHandle(hFile);
111 else *((WIN32FILE_IOWIN*)ret) = w32fiow;
112 }
113 return ret;
114}
115
116
117uLong ZCALLBACK win32_read_file_func (opaque, stream, buf, size)
118 voidpf opaque;
119 voidpf stream;
120 void* buf;
121 uLong size;
122{
123 uLong ret=0;
124 HANDLE hFile = NULL;
125 if (stream!=NULL)
126 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
127 if (hFile != NULL)
128 if (!ReadFile(hFile, buf, size, &ret, NULL))
129 {
130 DWORD dwErr = GetLastError();
131 if (dwErr == ERROR_HANDLE_EOF)
132 dwErr = 0;
133 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
134 }
135
136 return ret;
137}
138
139
140uLong ZCALLBACK win32_write_file_func (opaque, stream, buf, size)
141 voidpf opaque;
142 voidpf stream;
143 const void* buf;
144 uLong size;
145{
146 uLong ret=0;
147 HANDLE hFile = NULL;
148 if (stream!=NULL)
149 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
150
151 if (hFile !=NULL)
152 if (!WriteFile(hFile, buf, size, &ret, NULL))
153 {
154 DWORD dwErr = GetLastError();
155 if (dwErr == ERROR_HANDLE_EOF)
156 dwErr = 0;
157 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
158 }
159
160 return ret;
161}
162
163long ZCALLBACK win32_tell_file_func (opaque, stream)
164 voidpf opaque;
165 voidpf stream;
166{
167 long ret=-1;
168 HANDLE hFile = NULL;
169 if (stream!=NULL)
170 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
171 if (hFile != NULL)
172 {
173 DWORD dwSet = SetFilePointer(hFile, 0, NULL, FILE_CURRENT);
174 if (dwSet == INVALID_SET_FILE_POINTER)
175 {
176 DWORD dwErr = GetLastError();
177 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
178 ret = -1;
179 }
180 else
181 ret=(long)dwSet;
182 }
183 return ret;
184}
185
186long ZCALLBACK win32_seek_file_func (opaque, stream, offset, origin)
187 voidpf opaque;
188 voidpf stream;
189 uLong offset;
190 int origin;
191{
192 DWORD dwMoveMethod=0xFFFFFFFF;
193 HANDLE hFile = NULL;
194
195 long ret=-1;
196 if (stream!=NULL)
197 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
198 switch (origin)
199 {
200 case ZLIB_FILEFUNC_SEEK_CUR :
201 dwMoveMethod = FILE_CURRENT;
202 break;
203 case ZLIB_FILEFUNC_SEEK_END :
204 dwMoveMethod = FILE_END;
205 break;
206 case ZLIB_FILEFUNC_SEEK_SET :
207 dwMoveMethod = FILE_BEGIN;
208 break;
209 default: return -1;
210 }
211
212 if (hFile != NULL)
213 {
214 DWORD dwSet = SetFilePointer(hFile, offset, NULL, dwMoveMethod);
215 if (dwSet == INVALID_SET_FILE_POINTER)
216 {
217 DWORD dwErr = GetLastError();
218 ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
219 ret = -1;
220 }
221 else
222 ret=0;
223 }
224 return ret;
225}
226
227int ZCALLBACK win32_close_file_func (opaque, stream)
228 voidpf opaque;
229 voidpf stream;
230{
231 int ret=-1;
232
233 if (stream!=NULL)
234 {
235 HANDLE hFile;
236 hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
237 if (hFile != NULL)
238 {
239 CloseHandle(hFile);
240 ret=0;
241 }
242 free(stream);
243 }
244 return ret;
245}
246
247int ZCALLBACK win32_error_file_func (opaque, stream)
248 voidpf opaque;
249 voidpf stream;
250{
251 int ret=-1;
252 if (stream!=NULL)
253 {
254 ret = ((WIN32FILE_IOWIN*)stream) -> error;
255 }
256 return ret;
257}
258
259void fill_win32_filefunc (pzlib_filefunc_def)
260 zlib_filefunc_def* pzlib_filefunc_def;
261{
262 pzlib_filefunc_def->zopen_file = win32_open_file_func;
263 pzlib_filefunc_def->zread_file = win32_read_file_func;
264 pzlib_filefunc_def->zwrite_file = win32_write_file_func;
265 pzlib_filefunc_def->ztell_file = win32_tell_file_func;
266 pzlib_filefunc_def->zseek_file = win32_seek_file_func;
267 pzlib_filefunc_def->zclose_file = win32_close_file_func;
268 pzlib_filefunc_def->zerror_file = win32_error_file_func;
269 pzlib_filefunc_def->opaque=NULL;
270}
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