9e052883 |
1 | /* ioapi.h -- IO base function header for compress/uncompress .zip |
2 | part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html ) |
3 | |
4 | Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html ) |
5 | |
6 | Modifications for Zip64 support |
7 | Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com ) |
8 | |
9 | For more info read MiniZip_info.txt |
10 | |
11 | */ |
12 | |
13 | #if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS))) |
14 | #define _CRT_SECURE_NO_WARNINGS |
15 | #endif |
16 | |
17 | #if defined(__APPLE__) || defined(IOAPI_NO_64) |
18 | // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions |
19 | #define FOPEN_FUNC(filename, mode) fopen(filename, mode) |
20 | #define FTELLO_FUNC(stream) ftello(stream) |
21 | #define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin) |
22 | #else |
23 | #define FOPEN_FUNC(filename, mode) fopen64(filename, mode) |
24 | #define FTELLO_FUNC(stream) ftello64(stream) |
25 | #define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin) |
26 | #endif |
27 | |
28 | |
29 | #include "ioapi.h" |
30 | |
31 | voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode) |
32 | { |
33 | if (pfilefunc->zfile_func64.zopen64_file != NULL) |
34 | return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode); |
35 | else |
36 | { |
37 | return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode); |
38 | } |
39 | } |
40 | |
41 | long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) |
42 | { |
43 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
44 | return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); |
45 | else |
46 | { |
47 | uLong offsetTruncated = (uLong)offset; |
48 | if (offsetTruncated != offset) |
49 | return -1; |
50 | else |
51 | return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); |
52 | } |
53 | } |
54 | |
55 | ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream) |
56 | { |
57 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
58 | return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); |
59 | else |
60 | { |
61 | uLong tell_uLong = (uLong)(*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); |
62 | if ((tell_uLong) == MAXU32) |
63 | return (ZPOS64_T)-1; |
64 | else |
65 | return tell_uLong; |
66 | } |
67 | } |
68 | |
69 | void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32) |
70 | { |
71 | p_filefunc64_32->zfile_func64.zopen64_file = NULL; |
72 | p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; |
73 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
74 | p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; |
75 | p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; |
76 | p_filefunc64_32->zfile_func64.ztell64_file = NULL; |
77 | p_filefunc64_32->zfile_func64.zseek64_file = NULL; |
78 | p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; |
79 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
80 | p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; |
81 | p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; |
82 | p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; |
83 | } |
84 | |
85 | |
86 | |
87 | static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode)); |
88 | static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size)); |
89 | static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size)); |
90 | static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream)); |
91 | static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); |
92 | static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream)); |
93 | static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream)); |
94 | |
95 | static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode) |
96 | { |
97 | FILE* file = NULL; |
98 | const char* mode_fopen = NULL; |
99 | (void)opaque; |
100 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
101 | mode_fopen = "rb"; |
102 | else |
103 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
104 | mode_fopen = "r+b"; |
105 | else |
106 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
107 | mode_fopen = "wb"; |
108 | |
109 | if ((filename!=NULL) && (mode_fopen != NULL)) |
110 | file = fopen(filename, mode_fopen); |
111 | return file; |
112 | } |
113 | |
114 | static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode) |
115 | { |
116 | FILE* file = NULL; |
117 | const char* mode_fopen = NULL; |
118 | (void)opaque; |
119 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
120 | mode_fopen = "rb"; |
121 | else |
122 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
123 | mode_fopen = "r+b"; |
124 | else |
125 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
126 | mode_fopen = "wb"; |
127 | |
128 | if ((filename!=NULL) && (mode_fopen != NULL)) |
129 | file = FOPEN_FUNC((const char*)filename, mode_fopen); |
130 | return file; |
131 | } |
132 | |
133 | |
134 | static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size) |
135 | { |
136 | uLong ret; |
137 | (void)opaque; |
138 | ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); |
139 | return ret; |
140 | } |
141 | |
142 | static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size) |
143 | { |
144 | uLong ret; |
145 | (void)opaque; |
146 | ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); |
147 | return ret; |
148 | } |
149 | |
150 | static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream) |
151 | { |
152 | long ret; |
153 | (void)opaque; |
154 | ret = ftell((FILE *)stream); |
155 | return ret; |
156 | } |
157 | |
158 | |
159 | static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream) |
160 | { |
161 | ZPOS64_T ret; |
162 | (void)opaque; |
163 | ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream); |
164 | return ret; |
165 | } |
166 | |
167 | static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin) |
168 | { |
169 | int fseek_origin=0; |
170 | long ret; |
171 | (void)opaque; |
172 | switch (origin) |
173 | { |
174 | case ZLIB_FILEFUNC_SEEK_CUR : |
175 | fseek_origin = SEEK_CUR; |
176 | break; |
177 | case ZLIB_FILEFUNC_SEEK_END : |
178 | fseek_origin = SEEK_END; |
179 | break; |
180 | case ZLIB_FILEFUNC_SEEK_SET : |
181 | fseek_origin = SEEK_SET; |
182 | break; |
183 | default: return -1; |
184 | } |
185 | ret = 0; |
186 | if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0) |
187 | ret = -1; |
188 | return ret; |
189 | } |
190 | |
191 | static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) |
192 | { |
193 | int fseek_origin=0; |
194 | long ret; |
195 | (void)opaque; |
196 | switch (origin) |
197 | { |
198 | case ZLIB_FILEFUNC_SEEK_CUR : |
199 | fseek_origin = SEEK_CUR; |
200 | break; |
201 | case ZLIB_FILEFUNC_SEEK_END : |
202 | fseek_origin = SEEK_END; |
203 | break; |
204 | case ZLIB_FILEFUNC_SEEK_SET : |
205 | fseek_origin = SEEK_SET; |
206 | break; |
207 | default: return -1; |
208 | } |
209 | ret = 0; |
210 | |
211 | if(FSEEKO_FUNC((FILE *)stream, (z_off_t)offset, fseek_origin) != 0) |
212 | ret = -1; |
213 | |
214 | return ret; |
215 | } |
216 | |
217 | |
218 | static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream) |
219 | { |
220 | int ret; |
221 | (void)opaque; |
222 | ret = fclose((FILE *)stream); |
223 | return ret; |
224 | } |
225 | |
226 | static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream) |
227 | { |
228 | int ret; |
229 | (void)opaque; |
230 | ret = ferror((FILE *)stream); |
231 | return ret; |
232 | } |
233 | |
234 | void fill_fopen_filefunc (pzlib_filefunc_def) |
235 | zlib_filefunc_def* pzlib_filefunc_def; |
236 | { |
237 | pzlib_filefunc_def->zopen_file = fopen_file_func; |
238 | pzlib_filefunc_def->zread_file = fread_file_func; |
239 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
240 | pzlib_filefunc_def->ztell_file = ftell_file_func; |
241 | pzlib_filefunc_def->zseek_file = fseek_file_func; |
242 | pzlib_filefunc_def->zclose_file = fclose_file_func; |
243 | pzlib_filefunc_def->zerror_file = ferror_file_func; |
244 | pzlib_filefunc_def->opaque = NULL; |
245 | } |
246 | |
247 | void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def) |
248 | { |
249 | pzlib_filefunc_def->zopen64_file = fopen64_file_func; |
250 | pzlib_filefunc_def->zread_file = fread_file_func; |
251 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
252 | pzlib_filefunc_def->ztell64_file = ftell64_file_func; |
253 | pzlib_filefunc_def->zseek64_file = fseek64_file_func; |
254 | pzlib_filefunc_def->zclose_file = fclose_file_func; |
255 | pzlib_filefunc_def->zerror_file = ferror_file_func; |
256 | pzlib_filefunc_def->opaque = NULL; |
257 | } |