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7795edd6 JAS |
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 | #ifdef _WIN32 | |
14 | #ifndef _CRT_SECURE_NO_WARNINGS | |
15 | #define _CRT_SECURE_NO_WARNINGS | |
16 | #endif | |
17 | #endif | |
18 | ||
19 | #include "ioapi.h" | |
20 | ||
21 | voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode) | |
22 | { | |
23 | if (pfilefunc->zfile_func64.zopen64_file != NULL) | |
24 | return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode); | |
25 | else | |
26 | { | |
27 | return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode); | |
28 | } | |
29 | } | |
30 | ||
31 | long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) | |
32 | { | |
33 | if (pfilefunc->zfile_func64.zseek64_file != NULL) | |
34 | return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); | |
35 | else | |
36 | { | |
37 | uLong offsetTruncated = (uLong)offset; | |
38 | if (offsetTruncated != offset) | |
39 | return -1; | |
40 | else | |
41 | return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); | |
42 | } | |
43 | } | |
44 | ||
45 | ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream) | |
46 | { | |
47 | if (pfilefunc->zfile_func64.zseek64_file != NULL) | |
48 | return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); | |
49 | else | |
50 | { | |
51 | uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); | |
52 | if ((tell_uLong) == ((uLong)-1)) | |
53 | return (ZPOS64_T)-1; | |
54 | else | |
55 | return tell_uLong; | |
56 | } | |
57 | } | |
58 | ||
59 | void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32) | |
60 | { | |
61 | p_filefunc64_32->zfile_func64.zopen64_file = NULL; | |
62 | p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; | |
63 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; | |
64 | p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; | |
65 | p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; | |
66 | p_filefunc64_32->zfile_func64.ztell64_file = NULL; | |
67 | p_filefunc64_32->zfile_func64.zseek64_file = NULL; | |
68 | p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; | |
69 | p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; | |
70 | p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; | |
71 | p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; | |
72 | p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; | |
73 | } | |
74 | ||
75 | ||
76 | ||
77 | static voidpf ZCALLBACK fopen_file_func OF((voidpf opaque, const char* filename, int mode)); | |
78 | static uLong ZCALLBACK fread_file_func OF((voidpf opaque, voidpf stream, void* buf, uLong size)); | |
79 | static uLong ZCALLBACK fwrite_file_func OF((voidpf opaque, voidpf stream, const void* buf,uLong size)); | |
80 | static ZPOS64_T ZCALLBACK ftell64_file_func OF((voidpf opaque, voidpf stream)); | |
81 | static long ZCALLBACK fseek64_file_func OF((voidpf opaque, voidpf stream, ZPOS64_T offset, int origin)); | |
82 | static int ZCALLBACK fclose_file_func OF((voidpf opaque, voidpf stream)); | |
83 | static int ZCALLBACK ferror_file_func OF((voidpf opaque, voidpf stream)); | |
84 | ||
85 | static voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode) | |
86 | { | |
87 | FILE* file = NULL; | |
88 | const char* mode_fopen = NULL; | |
89 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) | |
90 | mode_fopen = "rb"; | |
91 | else | |
92 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) | |
93 | mode_fopen = "r+b"; | |
94 | else | |
95 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) | |
96 | mode_fopen = "wb"; | |
97 | ||
98 | if ((filename!=NULL) && (mode_fopen != NULL)) | |
99 | file = fopen(filename, mode_fopen); | |
100 | return file; | |
101 | } | |
102 | ||
103 | static voidpf ZCALLBACK fopen64_file_func (voidpf opaque, const void* filename, int mode) | |
104 | { | |
105 | FILE* file = NULL; | |
106 | const char* mode_fopen = NULL; | |
107 | if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) | |
108 | mode_fopen = "rb"; | |
109 | else | |
110 | if (mode & ZLIB_FILEFUNC_MODE_EXISTING) | |
111 | mode_fopen = "r+b"; | |
112 | else | |
113 | if (mode & ZLIB_FILEFUNC_MODE_CREATE) | |
114 | mode_fopen = "wb"; | |
115 | ||
116 | if ((filename!=NULL) && (mode_fopen != NULL)) | |
117 | file = fopen((const char*)filename, mode_fopen); | |
118 | return file; | |
119 | } | |
120 | ||
121 | ||
122 | static uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size) | |
123 | { | |
124 | uLong ret; | |
125 | ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream); | |
126 | return ret; | |
127 | } | |
128 | ||
129 | static uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size) | |
130 | { | |
131 | uLong ret; | |
132 | ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream); | |
133 | return ret; | |
134 | } | |
135 | ||
136 | static long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream) | |
137 | { | |
138 | long ret; | |
139 | ret = ftell((FILE *)stream); | |
140 | return ret; | |
141 | } | |
142 | ||
143 | ||
144 | static ZPOS64_T ZCALLBACK ftell64_file_func (voidpf opaque, voidpf stream) | |
145 | { | |
146 | ZPOS64_T ret; | |
147 | ret = ftell((FILE *)stream); | |
148 | return ret; | |
149 | } | |
150 | ||
151 | static long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin) | |
152 | { | |
153 | int fseek_origin=0; | |
154 | long ret; | |
155 | switch (origin) | |
156 | { | |
157 | case ZLIB_FILEFUNC_SEEK_CUR : | |
158 | fseek_origin = SEEK_CUR; | |
159 | break; | |
160 | case ZLIB_FILEFUNC_SEEK_END : | |
161 | fseek_origin = SEEK_END; | |
162 | break; | |
163 | case ZLIB_FILEFUNC_SEEK_SET : | |
164 | fseek_origin = SEEK_SET; | |
165 | break; | |
166 | default: return -1; | |
167 | } | |
168 | ret = 0; | |
169 | if (fseek((FILE *)stream, offset, fseek_origin) != 0) | |
170 | ret = -1; | |
171 | return ret; | |
172 | } | |
173 | ||
174 | static long ZCALLBACK fseek64_file_func (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) | |
175 | { | |
176 | int fseek_origin=0; | |
177 | long ret; | |
178 | switch (origin) | |
179 | { | |
180 | case ZLIB_FILEFUNC_SEEK_CUR : | |
181 | fseek_origin = SEEK_CUR; | |
182 | break; | |
183 | case ZLIB_FILEFUNC_SEEK_END : | |
184 | fseek_origin = SEEK_END; | |
185 | break; | |
186 | case ZLIB_FILEFUNC_SEEK_SET : | |
187 | fseek_origin = SEEK_SET; | |
188 | break; | |
189 | default: return -1; | |
190 | } | |
191 | ret = 0; | |
192 | ||
193 | if(fseek((FILE *)stream, (long)offset, fseek_origin) != 0) | |
194 | ret = -1; | |
195 | ||
196 | return ret; | |
197 | } | |
198 | ||
199 | ||
200 | static int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream) | |
201 | { | |
202 | int ret; | |
203 | ret = fclose((FILE *)stream); | |
204 | return ret; | |
205 | } | |
206 | ||
207 | static int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream) | |
208 | { | |
209 | int ret; | |
210 | ret = ferror((FILE *)stream); | |
211 | return ret; | |
212 | } | |
213 | ||
214 | void fill_fopen_filefunc (zlib_filefunc_def *pzlib_filefunc_def) | |
215 | { | |
216 | pzlib_filefunc_def->zopen_file = fopen_file_func; | |
217 | pzlib_filefunc_def->zread_file = fread_file_func; | |
218 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; | |
219 | pzlib_filefunc_def->ztell_file = ftell_file_func; | |
220 | pzlib_filefunc_def->zseek_file = fseek_file_func; | |
221 | pzlib_filefunc_def->zclose_file = fclose_file_func; | |
222 | pzlib_filefunc_def->zerror_file = ferror_file_func; | |
223 | pzlib_filefunc_def->opaque = NULL; | |
224 | } | |
225 | ||
226 | void fill_fopen64_filefunc (zlib_filefunc64_def* pzlib_filefunc_def) | |
227 | { | |
228 | pzlib_filefunc_def->zopen64_file = fopen64_file_func; | |
229 | pzlib_filefunc_def->zread_file = fread_file_func; | |
230 | pzlib_filefunc_def->zwrite_file = fwrite_file_func; | |
231 | pzlib_filefunc_def->ztell64_file = ftell64_file_func; | |
232 | pzlib_filefunc_def->zseek64_file = fseek64_file_func; | |
233 | pzlib_filefunc_def->zclose_file = fclose_file_func; | |
234 | pzlib_filefunc_def->zerror_file = ferror_file_func; | |
235 | pzlib_filefunc_def->opaque = NULL; | |
236 | } |