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Diffstat (limited to 'afb-client/bower_components/jszip/docs/ZIP spec.txt')
| -rw-r--r-- | afb-client/bower_components/jszip/docs/ZIP spec.txt | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/afb-client/bower_components/jszip/docs/ZIP spec.txt b/afb-client/bower_components/jszip/docs/ZIP spec.txt new file mode 100644 index 0000000..bb1485e --- /dev/null +++ b/afb-client/bower_components/jszip/docs/ZIP spec.txt @@ -0,0 +1,66 @@ +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 |