8b5037a6 |
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)) |
14 | #define _CRT_SECURE_NO_WARNINGS |
15 | #endif |
16 | |
17 | #include "ioapi.h" |
18 | |
19 | voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode) |
20 | { |
21 | if (pfilefunc->zfile_func64.zopen64_file != NULL) |
22 | return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode); |
23 | else |
24 | { |
25 | return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode); |
26 | } |
27 | } |
28 | |
29 | long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) |
30 | { |
31 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
32 | return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); |
33 | else |
34 | { |
35 | uLong offsetTruncated = (uLong)offset; |
36 | if (offsetTruncated != offset) |
37 | return -1; |
38 | else |
39 | return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); |
40 | } |
41 | } |
42 | |
43 | ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream) |
44 | { |
45 | if (pfilefunc->zfile_func64.zseek64_file != NULL) |
46 | return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); |
47 | else |
48 | { |
49 | uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); |
50 | if ((tell_uLong) == ((uLong)-1)) |
51 | return (ZPOS64_T)-1; |
52 | else |
53 | return tell_uLong; |
54 | } |
55 | } |
56 | |
57 | void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32) |
58 | { |
59 | p_filefunc64_32->zfile_func64.zopen64_file = NULL; |
60 | p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; |
61 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
62 | p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; |
63 | p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; |
64 | p_filefunc64_32->zfile_func64.ztell64_file = NULL; |
65 | p_filefunc64_32->zfile_func64.zseek64_file = NULL; |
66 | p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; |
67 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; |
68 | p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; |
69 | p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; |
70 | p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; |
71 | } |
72 | |
73 | |
74 | |
75 | static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode)); |
76 | static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size)); |
77 | static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size)); |
78 | static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream)); |
79 | static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); |
80 | static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream)); |
81 | static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream)); |
82 | |
83 | static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode) |
84 | { |
85 | FILE* file = NULL; |
86 | const char* mode_fopen = NULL; |
87 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
88 | mode_fopen = "rb"; |
89 | else |
90 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
91 | mode_fopen = "r+b"; |
92 | else |
93 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
94 | mode_fopen = "wb"; |
95 | |
96 | if ((filename!=NULL) && (mode_fopen != NULL)) |
97 | file = fopen(filename, mode_fopen); |
98 | return file; |
99 | } |
100 | |
101 | static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode) |
102 | { |
103 | FILE* file = NULL; |
104 | const char* mode_fopen = NULL; |
105 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) |
106 | mode_fopen = "rb"; |
107 | else |
108 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) |
109 | mode_fopen = "r+b"; |
110 | else |
111 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) |
112 | mode_fopen = "wb"; |
113 | |
114 | if ((filename!=NULL) && (mode_fopen != NULL)) |
115 | file = fopen64((const char*)filename, mode_fopen); |
116 | return file; |
117 | } |
118 | |
119 | |
120 | static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size) |
121 | { |
122 | uLong ret; |
123 | ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); |
124 | return ret; |
125 | } |
126 | |
127 | static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size) |
128 | { |
129 | uLong ret; |
130 | ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); |
131 | return ret; |
132 | } |
133 | |
134 | static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream) |
135 | { |
136 | long ret; |
137 | ret = ftell((FILE *)stream); |
138 | return ret; |
139 | } |
140 | |
141 | |
142 | static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream) |
143 | { |
144 | ZPOS64_T ret; |
145 | ret = ftello64((FILE *)stream); |
146 | return ret; |
147 | } |
148 | |
149 | static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin) |
150 | { |
151 | int fseek_origin=0; |
152 | long ret; |
153 | switch (origin) |
154 | { |
155 | case ZLIB_FILEFUNC_SEEK_CUR : |
156 | fseek_origin = SEEK_CUR; |
157 | break; |
158 | case ZLIB_FILEFUNC_SEEK_END : |
159 | fseek_origin = SEEK_END; |
160 | break; |
161 | case ZLIB_FILEFUNC_SEEK_SET : |
162 | fseek_origin = SEEK_SET; |
163 | break; |
164 | default: return -1; |
165 | } |
166 | ret = 0; |
167 | if (fseek((FILE *)stream, offset, fseek_origin) != 0) |
168 | ret = -1; |
169 | return ret; |
170 | } |
171 | |
172 | static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) |
173 | { |
174 | int fseek_origin=0; |
175 | long ret; |
176 | switch (origin) |
177 | { |
178 | case ZLIB_FILEFUNC_SEEK_CUR : |
179 | fseek_origin = SEEK_CUR; |
180 | break; |
181 | case ZLIB_FILEFUNC_SEEK_END : |
182 | fseek_origin = SEEK_END; |
183 | break; |
184 | case ZLIB_FILEFUNC_SEEK_SET : |
185 | fseek_origin = SEEK_SET; |
186 | break; |
187 | default: return -1; |
188 | } |
189 | ret = 0; |
190 | |
191 | if(fseeko64((FILE *)stream, offset, fseek_origin) != 0) |
192 | ret = -1; |
193 | |
194 | return ret; |
195 | } |
196 | |
197 | |
198 | static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream) |
199 | { |
200 | int ret; |
201 | ret = fclose((FILE *)stream); |
202 | return ret; |
203 | } |
204 | |
205 | static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream) |
206 | { |
207 | int ret; |
208 | ret = ferror((FILE *)stream); |
209 | return ret; |
210 | } |
211 | |
212 | void fill_fopen_filefunc (pzlib_filefunc_def) |
213 | zlib_filefunc_def* pzlib_filefunc_def; |
214 | { |
215 | pzlib_filefunc_def->zopen_file = fopen_file_func; |
216 | pzlib_filefunc_def->zread_file = fread_file_func; |
217 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
218 | pzlib_filefunc_def->ztell_file = ftell_file_func; |
219 | pzlib_filefunc_def->zseek_file = fseek_file_func; |
220 | pzlib_filefunc_def->zclose_file = fclose_file_func; |
221 | pzlib_filefunc_def->zerror_file = ferror_file_func; |
222 | pzlib_filefunc_def->opaque = NULL; |
223 | } |
224 | |
225 | void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def) |
226 | { |
227 | pzlib_filefunc_def->zopen64_file = fopen64_file_func; |
228 | pzlib_filefunc_def->zread_file = fread_file_func; |
229 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; |
230 | pzlib_filefunc_def->ztell64_file = ftell64_file_func; |
231 | pzlib_filefunc_def->zseek64_file = fseek64_file_func; |
232 | pzlib_filefunc_def->zclose_file = fclose_file_func; |
233 | pzlib_filefunc_def->zerror_file = ferror_file_func; |
234 | pzlib_filefunc_def->opaque = NULL; |
235 | } |