mirror of https://github.com/ColorlibHQ/gentelella
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
2.5 KiB
66 lines
2.5 KiB
Here are the notes I made while working through the ZIP file specification. |
|
|
|
For each file: |
|
|
|
local file header signature 4 bytes (0x04034b50) |
|
version needed to extract 2 bytes |
|
general purpose bit flag 2 bytes |
|
compression method 2 bytes |
|
last mod file time 2 bytes |
|
last mod file date 2 bytes |
|
crc-32 4 bytes |
|
compressed size 4 bytes |
|
uncompressed size 4 bytes |
|
file name length 2 bytes |
|
extra field length 2 bytes |
|
|
|
|sig |v |g |c |t |d |crc |csz |usz |n |x | |
|
PK.. ## 00 00 ?? ?? xxxx ???? ???? ?? 00 |
|
<file name><file data> |
|
|
|
Central directory: |
|
|
|
central file header signature 4 bytes (0x02014b50) |
|
version made by 2 bytes |
|
version needed to extract 2 bytes * |
|
general purpose bit flag 2 bytes * |
|
compression method 2 bytes * |
|
last mod file time 2 bytes * |
|
last mod file date 2 bytes * |
|
crc-32 4 bytes * |
|
compressed size 4 bytes * |
|
uncompressed size 4 bytes * |
|
file name length 2 bytes * |
|
extra field length 2 bytes * |
|
file comment length 2 bytes |
|
disk number start 2 bytes |
|
internal file attributes 2 bytes |
|
external file attributes 4 bytes |
|
relative offset of local header 4 bytes |
|
|
|
file name (variable size) |
|
extra field (variable size) |
|
file comment (variable size) |
|
|
|
|sig |vm|vx|g |c |d |t |crc |csz |usz |n |x |cm|dn|ia|xa |roff| |
|
PK.. ## ## 00 00 ?? ?? xxxx ???? ???? ?? 00 00 00 00 xxxx ???? |
|
|
|
End of central directory: |
|
|
|
end of central dir signature 4 bytes (0x06054b50) |
|
number of this disk 2 bytes |
|
number of the disk with the |
|
start of the central directory 2 bytes |
|
total number of entries in the |
|
central directory on this disk 2 bytes |
|
total number of entries in |
|
the central directory 2 bytes |
|
size of the central directory 4 bytes |
|
offset of start of central |
|
directory with respect to |
|
the starting disk number 4 bytes |
|
.ZIP file comment length 2 bytes |
|
.ZIP file comment (variable size) |
|
|
|
|sig |n1|n2|e |ne|size|off |cm| |
|
PK.. 00 00 ?? ?? ???? ???? 00
|
|
|