Add zstd algorithm support in zip.

zstd is a very good compression algorithm. In recent years, it has been used by more and more open source projects. Recently, the zstd compression algorithm has been added to the zip compression specification. The magic number is 20. Now, I suggest that minizip start to add support for zstd .

I use minizip as the implementation of baulk's zip decompression function, and currently implements a zstd support that has not been sufficiently tested for reference:

https://github.com/baulk/baulk/blob/master/lib/archive/minizip/mz_strm_zstd.c

Follow-up of other compression software:
mcmilk/7-Zip-zstd#132
p7zip-project/p7zip#25
mholt/archiver#223

Thanks.

see curl/curl#5453 : I approve it

@fcharlie

@fcharlie do you want to make a PR also put a comment at the top for credit?

@nmoinvaz

@nmoinvaz Thank you for your approval, but I have been a little busy lately. When I am free, I will go and see how to better support zstd in minizip.

Ok, if you don't have time I can incorporate it for you. In the comment in the file do you want me to credit you as "Force Charlie"?

@nmoinvaz

@nmoinvaz You can call me "Force Charlie". Thank you

Added support for ZSTD. #498

@nmoinvaz

@nmoinvaz

The zip specification has been updated and the magic number 20 has been deprecated

        0 - The file is stored (no compression)
        1 - The file is Shrunk
        2 - The file is Reduced with compression factor 1
        3 - The file is Reduced with compression factor 2
        4 - The file is Reduced with compression factor 3
        5 - The file is Reduced with compression factor 4
        6 - The file is Imploded
        7 - Reserved for Tokenizing compression algorithm
        8 - The file is Deflated
        9 - Enhanced Deflating using Deflate64(tm)
       10 - PKWARE Data Compression Library Imploding (old IBM TERSE)
       11 - Reserved by PKWARE
       12 - File is compressed using BZIP2 algorithm
       13 - Reserved by PKWARE
       14 - LZMA
       15 - Reserved by PKWARE
       16 - IBM z/OS CMPSC Compression
       17 - Reserved by PKWARE
       18 - File is compressed using IBM TERSE (new)
       19 - IBM LZ77 z Architecture 
       20 - deprecated (use method 93 for zstd)
       93 - Zstandard (zstd) Compression 
       94 - MP3 Compression 
       95 - XZ Compression 
       96 - JPEG variant
       97 - WavPack compressed data
       98 - PPMd version I, Rev 1
       99 - AE-x encryption marker (see APPENDIX E)

see #500 about zstd

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Add zstd algorithm support in zip. #498

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Add zstd algorithm support in zip. #498

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gvollant commented on Jun 14, 2020

nmoinvaz commented on Jun 14, 2020

fcharlie commented on Jun 15, 2020

nmoinvaz commented on Jun 15, 2020

fcharlie commented on Jun 15, 2020

fcharlie commented on Jun 20, 2020

gvollant commented on Jun 20, 2020

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