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27 
28 /* Local file head offsets.  The header is followed by the filename and
29    possibly the extra field. */
30 #define zf_lfhSig		0
31 #define zf_lfhExVers		4
32 #define zf_lfhFlags		6
33 #define zf_lfhComp		8
34 #define zf_lfhModTime		10
35 #define zf_lfhModDate		12
36 #define zf_lfhCRC		14
37 #define zf_lfhCompSize		18
38 #define zf_lfhUncompSize	22
39 #define zf_lfhNameLen		26
40 #define zf_lfhExtraLen		28
41 #define zf_lfhSIZE		30 /* total size of header */
42 
43 /* We don't write data descriptors. */
44 
45 /* Central dir file header offsets.  Each entry is followed by the filename,
46    optional extra field, and file comment. */
47 #define zf_cdhSig		0
48 #define zf_cdhVers		4
49 #define zf_cdhExVers		6
50 #define zf_cdhFlags		8
51 #define zf_cdhComp		10
52 #define zf_cdhTime		12
53 #define zf_cdhDate		14
54 #define zf_cdhCRC		16
55 #define zf_cdhCompSize		20
56 #define zf_cdhUncompSize	24
57 #define zf_cdhNameLen		28
58 #define zf_cdhExtraLen		30
59 #define zf_cdhCommentLen	32
60 #define zf_cdhDiskNum		34
61 #define zf_cdhIFAttrs		36
62 #define zf_cdhEFAttrs		38
63 #define zf_cdhLHOffset		42
64 #define zf_cdhSIZE		46 /* total size of header */
65 
66 /* End of central dir record offsets.  It is followed by the zipfile
67    comment. */
68 #define zf_ecdSig		0
69 #define zf_ecdDiskNum		4
70 #define zf_ecdDirDiskNum	6
71 #define zf_ecdNumEntries	8
72 #define zf_ecdTotalEntries	10
73 #define zf_ecdDirSize		12
74 #define zf_ecdDirOffset		16
75 #define zf_ecdCommentLen	20
76 #define zf_ecdSIZE		22 /* total size */
77 
78 /* Magic constants to put in these structures. */
79 #define zf_LFHSIGValue		0x04034b50
80 #define zf_CDHSIGValue		0x02014b50
81 #define zf_ECDSIGValue		0x06054b50
82 
83 /* OS values for upper byte of version field. */
84 #define zf_osUnix		3
85 
86 /* Encode a major,minor version in a byte. */
87 #define zf_Vers(major,minor)	((major) * 10 + (minor))
88 
89 /* Compression values. */
90 #define zf_compNone		0
91 
92