Mercurial > hg > CbC > CbC_gcc
comparison zlib/contrib/minizip/mztools.c @ 51:ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Sun, 07 Feb 2010 18:27:48 +0900 |
parents | |
children | 04ced10e8804 |
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47:3bfb6c00c1e0 | 51:ae3a4bfb450b |
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1 /* | |
2 Additional tools for Minizip | |
3 Code: Xavier Roche '2004 | |
4 License: Same as ZLIB (www.gzip.org) | |
5 */ | |
6 | |
7 /* Code */ | |
8 #include <stdio.h> | |
9 #include <stdlib.h> | |
10 #include <string.h> | |
11 #include "zlib.h" | |
12 #include "unzip.h" | |
13 | |
14 #define READ_8(adr) ((unsigned char)*(adr)) | |
15 #define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) ) | |
16 #define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) ) | |
17 | |
18 #define WRITE_8(buff, n) do { \ | |
19 *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \ | |
20 } while(0) | |
21 #define WRITE_16(buff, n) do { \ | |
22 WRITE_8((unsigned char*)(buff), n); \ | |
23 WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \ | |
24 } while(0) | |
25 #define WRITE_32(buff, n) do { \ | |
26 WRITE_16((unsigned char*)(buff), (n) & 0xffff); \ | |
27 WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \ | |
28 } while(0) | |
29 | |
30 extern int ZEXPORT unzRepair(file, fileOut, fileOutTmp, nRecovered, bytesRecovered) | |
31 const char* file; | |
32 const char* fileOut; | |
33 const char* fileOutTmp; | |
34 uLong* nRecovered; | |
35 uLong* bytesRecovered; | |
36 { | |
37 int err = Z_OK; | |
38 FILE* fpZip = fopen(file, "rb"); | |
39 FILE* fpOut = fopen(fileOut, "wb"); | |
40 FILE* fpOutCD = fopen(fileOutTmp, "wb"); | |
41 if (fpZip != NULL && fpOut != NULL) { | |
42 int entries = 0; | |
43 uLong totalBytes = 0; | |
44 char header[30]; | |
45 char filename[256]; | |
46 char extra[1024]; | |
47 int offset = 0; | |
48 int offsetCD = 0; | |
49 while ( fread(header, 1, 30, fpZip) == 30 ) { | |
50 int currentOffset = offset; | |
51 | |
52 /* File entry */ | |
53 if (READ_32(header) == 0x04034b50) { | |
54 unsigned int version = READ_16(header + 4); | |
55 unsigned int gpflag = READ_16(header + 6); | |
56 unsigned int method = READ_16(header + 8); | |
57 unsigned int filetime = READ_16(header + 10); | |
58 unsigned int filedate = READ_16(header + 12); | |
59 unsigned int crc = READ_32(header + 14); /* crc */ | |
60 unsigned int cpsize = READ_32(header + 18); /* compressed size */ | |
61 unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */ | |
62 unsigned int fnsize = READ_16(header + 26); /* file name length */ | |
63 unsigned int extsize = READ_16(header + 28); /* extra field length */ | |
64 filename[0] = extra[0] = '\0'; | |
65 | |
66 /* Header */ | |
67 if (fwrite(header, 1, 30, fpOut) == 30) { | |
68 offset += 30; | |
69 } else { | |
70 err = Z_ERRNO; | |
71 break; | |
72 } | |
73 | |
74 /* Filename */ | |
75 if (fnsize > 0) { | |
76 if (fread(filename, 1, fnsize, fpZip) == fnsize) { | |
77 if (fwrite(filename, 1, fnsize, fpOut) == fnsize) { | |
78 offset += fnsize; | |
79 } else { | |
80 err = Z_ERRNO; | |
81 break; | |
82 } | |
83 } else { | |
84 err = Z_ERRNO; | |
85 break; | |
86 } | |
87 } else { | |
88 err = Z_STREAM_ERROR; | |
89 break; | |
90 } | |
91 | |
92 /* Extra field */ | |
93 if (extsize > 0) { | |
94 if (fread(extra, 1, extsize, fpZip) == extsize) { | |
95 if (fwrite(extra, 1, extsize, fpOut) == extsize) { | |
96 offset += extsize; | |
97 } else { | |
98 err = Z_ERRNO; | |
99 break; | |
100 } | |
101 } else { | |
102 err = Z_ERRNO; | |
103 break; | |
104 } | |
105 } | |
106 | |
107 /* Data */ | |
108 { | |
109 int dataSize = cpsize; | |
110 if (dataSize == 0) { | |
111 dataSize = uncpsize; | |
112 } | |
113 if (dataSize > 0) { | |
114 char* data = malloc(dataSize); | |
115 if (data != NULL) { | |
116 if ((int)fread(data, 1, dataSize, fpZip) == dataSize) { | |
117 if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) { | |
118 offset += dataSize; | |
119 totalBytes += dataSize; | |
120 } else { | |
121 err = Z_ERRNO; | |
122 } | |
123 } else { | |
124 err = Z_ERRNO; | |
125 } | |
126 free(data); | |
127 if (err != Z_OK) { | |
128 break; | |
129 } | |
130 } else { | |
131 err = Z_MEM_ERROR; | |
132 break; | |
133 } | |
134 } | |
135 } | |
136 | |
137 /* Central directory entry */ | |
138 { | |
139 char header[46]; | |
140 char* comment = ""; | |
141 int comsize = (int) strlen(comment); | |
142 WRITE_32(header, 0x02014b50); | |
143 WRITE_16(header + 4, version); | |
144 WRITE_16(header + 6, version); | |
145 WRITE_16(header + 8, gpflag); | |
146 WRITE_16(header + 10, method); | |
147 WRITE_16(header + 12, filetime); | |
148 WRITE_16(header + 14, filedate); | |
149 WRITE_32(header + 16, crc); | |
150 WRITE_32(header + 20, cpsize); | |
151 WRITE_32(header + 24, uncpsize); | |
152 WRITE_16(header + 28, fnsize); | |
153 WRITE_16(header + 30, extsize); | |
154 WRITE_16(header + 32, comsize); | |
155 WRITE_16(header + 34, 0); /* disk # */ | |
156 WRITE_16(header + 36, 0); /* int attrb */ | |
157 WRITE_32(header + 38, 0); /* ext attrb */ | |
158 WRITE_32(header + 42, currentOffset); | |
159 /* Header */ | |
160 if (fwrite(header, 1, 46, fpOutCD) == 46) { | |
161 offsetCD += 46; | |
162 | |
163 /* Filename */ | |
164 if (fnsize > 0) { | |
165 if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) { | |
166 offsetCD += fnsize; | |
167 } else { | |
168 err = Z_ERRNO; | |
169 break; | |
170 } | |
171 } else { | |
172 err = Z_STREAM_ERROR; | |
173 break; | |
174 } | |
175 | |
176 /* Extra field */ | |
177 if (extsize > 0) { | |
178 if (fwrite(extra, 1, extsize, fpOutCD) == extsize) { | |
179 offsetCD += extsize; | |
180 } else { | |
181 err = Z_ERRNO; | |
182 break; | |
183 } | |
184 } | |
185 | |
186 /* Comment field */ | |
187 if (comsize > 0) { | |
188 if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) { | |
189 offsetCD += comsize; | |
190 } else { | |
191 err = Z_ERRNO; | |
192 break; | |
193 } | |
194 } | |
195 | |
196 | |
197 } else { | |
198 err = Z_ERRNO; | |
199 break; | |
200 } | |
201 } | |
202 | |
203 /* Success */ | |
204 entries++; | |
205 | |
206 } else { | |
207 break; | |
208 } | |
209 } | |
210 | |
211 /* Final central directory */ | |
212 { | |
213 int entriesZip = entries; | |
214 char header[22]; | |
215 char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools"; | |
216 int comsize = (int) strlen(comment); | |
217 if (entriesZip > 0xffff) { | |
218 entriesZip = 0xffff; | |
219 } | |
220 WRITE_32(header, 0x06054b50); | |
221 WRITE_16(header + 4, 0); /* disk # */ | |
222 WRITE_16(header + 6, 0); /* disk # */ | |
223 WRITE_16(header + 8, entriesZip); /* hack */ | |
224 WRITE_16(header + 10, entriesZip); /* hack */ | |
225 WRITE_32(header + 12, offsetCD); /* size of CD */ | |
226 WRITE_32(header + 16, offset); /* offset to CD */ | |
227 WRITE_16(header + 20, comsize); /* comment */ | |
228 | |
229 /* Header */ | |
230 if (fwrite(header, 1, 22, fpOutCD) == 22) { | |
231 | |
232 /* Comment field */ | |
233 if (comsize > 0) { | |
234 if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) { | |
235 err = Z_ERRNO; | |
236 } | |
237 } | |
238 | |
239 } else { | |
240 err = Z_ERRNO; | |
241 } | |
242 } | |
243 | |
244 /* Final merge (file + central directory) */ | |
245 fclose(fpOutCD); | |
246 if (err == Z_OK) { | |
247 fpOutCD = fopen(fileOutTmp, "rb"); | |
248 if (fpOutCD != NULL) { | |
249 int nRead; | |
250 char buffer[8192]; | |
251 while ( (nRead = (int)fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) { | |
252 if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) { | |
253 err = Z_ERRNO; | |
254 break; | |
255 } | |
256 } | |
257 fclose(fpOutCD); | |
258 } | |
259 } | |
260 | |
261 /* Close */ | |
262 fclose(fpZip); | |
263 fclose(fpOut); | |
264 | |
265 /* Wipe temporary file */ | |
266 (void)remove(fileOutTmp); | |
267 | |
268 /* Number of recovered entries */ | |
269 if (err == Z_OK) { | |
270 if (nRecovered != NULL) { | |
271 *nRecovered = entries; | |
272 } | |
273 if (bytesRecovered != NULL) { | |
274 *bytesRecovered = totalBytes; | |
275 } | |
276 } | |
277 } else { | |
278 err = Z_STREAM_ERROR; | |
279 } | |
280 return err; | |
281 } |