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1.1 root 1: /*
2: Hatari
3:
4: Zipped disc support, using zlib
5:
6: This file is originally from the minizip code by Gilles Vollant
7:
8: */
9: /* unzip.h -- IO for uncompress .zip files using zlib
10: Version 0.15 beta, Mar 19th, 1998,
11:
12: Copyright (C) 1998 Gilles Vollant
13:
14: This unzip package allow extract file from .ZIP file, compatible with PKZip 2.04g
15: WinZip, InfoZip tools and compatible.
16: Encryption and multi volume ZipFile (span) are not supported.
17: Old compressions used by old PKZip 1.x are not supported
18:
19: THIS IS AN ALPHA VERSION. AT THIS STAGE OF DEVELOPPEMENT, SOMES API OR STRUCTURE
20: CAN CHANGE IN FUTURE VERSION !!
21: I WAIT FEEDBACK at mail [email protected]
22: Visit also http://www.winimage.com/zLibDll/unzip.html for evolution
23:
24: Condition of use and distribution are the same than zlib :
25:
26: This software is provided 'as-is', without any express or implied
27: warranty. In no event will the authors be held liable for any damages
28: arising from the use of this software.
29:
30: Permission is granted to anyone to use this software for any purpose,
31: including commercial applications, and to alter it and redistribute it
32: freely, subject to the following restrictions:
33:
34: 1. The origin of this software must not be misrepresented; you must not
35: claim that you wrote the original software. If you use this software
36: in a product, an acknowledgment in the product documentation would be
37: appreciated but is not required.
38: 2. Altered source versions must be plainly marked as such, and must not be
39: misrepresented as being the original software.
40: 3. This notice may not be removed or altered from any source distribution.
41:
42:
43: */
44: /* for more info about .ZIP format, see
45: ftp://ftp.cdrom.com/pub/infozip/doc/appnote-970311-iz.zip
46: PkWare has also a specification at :
47: ftp://ftp.pkware.com/probdesc.zip */
48:
49: #ifndef _unz_H
50: #define _unz_H
51:
52: #ifdef __cplusplus
53: extern "C" {
54: #endif
55:
56: #ifndef _ZLIB_H
57: #include "zlib.h"
58: #endif
59:
60: #if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
61: /* like the STRICT of WIN32, we define a pointer that cannot be converted
62: from (void*) without cast */
63: typedef struct TagunzFile__ { int unused; } unzFile__;
64: typedef unzFile__ *unzFile;
65: #else
66: typedef voidp unzFile;
67: #endif
68:
69:
70: #define UNZ_OK (0)
71: #define UNZ_END_OF_LIST_OF_FILE (-100)
72: #define UNZ_ERRNO (Z_ERRNO)
73: #define UNZ_EOF (0)
74: #define UNZ_PARAMERROR (-102)
75: #define UNZ_BADZIPFILE (-103)
76: #define UNZ_INTERNALERROR (-104)
77: #define UNZ_CRCERROR (-105)
78:
79: /* tm_unz contain date/time info */
80: typedef struct tm_unz_s
81: {
82: uInt tm_sec; /* seconds after the minute - [0,59] */
83: uInt tm_min; /* minutes after the hour - [0,59] */
84: uInt tm_hour; /* hours since midnight - [0,23] */
85: uInt tm_mday; /* day of the month - [1,31] */
86: uInt tm_mon; /* months since January - [0,11] */
87: uInt tm_year; /* years - [1980..2044] */
88: } tm_unz;
89:
90: /* unz_global_info structure contain global data about the ZIPfile
91: These data comes from the end of central dir */
92: typedef struct unz_global_info_s
93: {
94: uLong number_entry; /* total number of entries in
95: the central dir on this disk */
96: uLong size_comment; /* size of the global comment of the zipfile */
97: } unz_global_info;
98:
99:
100: /* unz_file_info contain information about a file in the zipfile */
101: typedef struct unz_file_info_s
102: {
103: uLong version; /* version made by 2 bytes */
104: uLong version_needed; /* version needed to extract 2 bytes */
105: uLong flag; /* general purpose bit flag 2 bytes */
106: uLong compression_method; /* compression method 2 bytes */
107: uLong dosDate; /* last mod file date in Dos fmt 4 bytes */
108: uLong crc; /* crc-32 4 bytes */
109: uLong compressed_size; /* compressed size 4 bytes */
110: uLong uncompressed_size; /* uncompressed size 4 bytes */
111: uLong size_filename; /* filename length 2 bytes */
112: uLong size_file_extra; /* extra field length 2 bytes */
113: uLong size_file_comment; /* file comment length 2 bytes */
114:
115: uLong disk_num_start; /* disk number start 2 bytes */
116: uLong internal_fa; /* internal file attributes 2 bytes */
117: uLong external_fa; /* external file attributes 4 bytes */
118:
119: tm_unz tmu_date;
120: } unz_file_info;
121:
122: extern int ZEXPORT unzStringFileNameCompare OF ((const char* fileName1,
123: const char* fileName2,
124: int iCaseSensitivity));
125: /*
126: Compare two filename (fileName1,fileName2).
127: If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp)
128: If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi
129: or strcasecmp)
130: If iCaseSenisivity = 0, case sensitivity is defaut of your operating system
131: (like 1 on Unix, 2 on Windows)
132: */
133:
134:
135: extern unzFile ZEXPORT unzOpen OF((const char *path));
136: /*
137: Open a Zip file. path contain the full pathname (by example,
138: on a Windows NT computer "c:\\zlib\\zlib111.zip" or on an Unix computer
139: "zlib/zlib111.zip".
140: If the zipfile cannot be opened (file don't exist or in not valid), the
141: return value is NULL.
142: Else, the return value is a unzFile Handle, usable with other function
143: of this unzip package.
144: */
145:
146: extern int ZEXPORT unzClose OF((unzFile file));
147: /*
148: Close a ZipFile opened with unzipOpen.
149: If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
150: these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
151: return UNZ_OK if there is no problem. */
152:
153: extern int ZEXPORT unzGetGlobalInfo OF((unzFile file,
154: unz_global_info *pglobal_info));
155: /*
156: Write info about the ZipFile in the *pglobal_info structure.
157: No preparation of the structure is needed
158: return UNZ_OK if there is no problem. */
159:
160:
161: extern int ZEXPORT unzGetGlobalComment OF((unzFile file,
162: char *szComment,
163: uLong uSizeBuf));
164: /*
165: Get the global comment string of the ZipFile, in the szComment buffer.
166: uSizeBuf is the size of the szComment buffer.
167: return the number of byte copied or an error code <0
168: */
169:
170:
171: /***************************************************************************/
172: /* Unzip package allow you browse the directory of the zipfile */
173:
174: extern int ZEXPORT unzGoToFirstFile OF((unzFile file));
175: /*
176: Set the current file of the zipfile to the first file.
177: return UNZ_OK if there is no problem
178: */
179:
180: extern int ZEXPORT unzGoToNextFile OF((unzFile file));
181: /*
182: Set the current file of the zipfile to the next file.
183: return UNZ_OK if there is no problem
184: return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
185: */
186:
187: extern int ZEXPORT unzLocateFile OF((unzFile file,
188: const char *szFileName,
189: int iCaseSensitivity));
190: /*
191: Try locate the file szFileName in the zipfile.
192: For the iCaseSensitivity signification, see unzStringFileNameCompare
193:
194: return value :
195: UNZ_OK if the file is found. It becomes the current file.
196: UNZ_END_OF_LIST_OF_FILE if the file is not found
197: */
198:
199:
200: extern int ZEXPORT unzGetCurrentFileInfo OF((unzFile file,
201: unz_file_info *pfile_info,
202: char *szFileName,
203: uLong fileNameBufferSize,
204: void *extraField,
205: uLong extraFieldBufferSize,
206: char *szComment,
207: uLong commentBufferSize));
208: /*
209: Get Info about the current file
210: if pfile_info!=NULL, the *pfile_info structure will contain somes info about
211: the current file
212: if szFileName!=NULL, the filemane string will be copied in szFileName
213: (fileNameBufferSize is the size of the buffer)
214: if extraField!=NULL, the extra field information will be copied in extraField
215: (extraFieldBufferSize is the size of the buffer).
216: This is the Central-header version of the extra field
217: if szComment!=NULL, the comment string of the file will be copied in szComment
218: (commentBufferSize is the size of the buffer)
219: */
220:
221: /***************************************************************************/
222: /* for reading the content of the current zipfile, you can open it, read data
223: from it, and close it (you can close it before reading all the file)
224: */
225:
226: extern int ZEXPORT unzOpenCurrentFile OF((unzFile file));
227: /*
228: Open for reading data the current file in the zipfile.
229: If there is no error, the return value is UNZ_OK.
230: */
231:
232: extern int ZEXPORT unzCloseCurrentFile OF((unzFile file));
233: /*
234: Close the file in zip opened with unzOpenCurrentFile
235: Return UNZ_CRCERROR if all the file was read but the CRC is not good
236: */
237:
238:
239: extern int ZEXPORT unzReadCurrentFile OF((unzFile file,
240: voidp buf,
241: unsigned len));
242: /*
243: Read bytes from the current file (opened by unzOpenCurrentFile)
244: buf contain buffer where data must be copied
245: len the size of buf.
246:
247: return the number of byte copied if somes bytes are copied
248: return 0 if the end of file was reached
249: return <0 with error code if there is an error
250: (UNZ_ERRNO for IO error, or zLib error for uncompress error)
251: */
252:
253: extern z_off_t ZEXPORT unztell OF((unzFile file));
254: /*
255: Give the current position in uncompressed data
256: */
257:
258: extern int ZEXPORT unzeof OF((unzFile file));
259: /*
260: return 1 if the end of file was reached, 0 elsewhere
261: */
262:
263: extern int ZEXPORT unzGetLocalExtrafield OF((unzFile file,
264: voidp buf,
265: unsigned len));
266: /*
267: Read extra field from the current file (opened by unzOpenCurrentFile)
268: This is the local-header version of the extra field (sometimes, there is
269: more info in the local-header version than in the central-header)
270:
271: if buf==NULL, it return the size of the local extra field
272:
273: if buf!=NULL, len is the size of the buffer, the extra header is copied in
274: buf.
275: the return value is the number of bytes copied in buf, or (if <0)
276: the error code
277: */
278:
279: #ifdef __cplusplus
280: }
281: #endif
282:
283: #endif /* _unz_H */
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