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easy7zip/README.md
Tino Reichardt eaee80be81 Fix naming: ZStandard -> Zstandard
2017-08-14 23:38:52 +02:00

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# README
This is the Github Page of 7-Zip ZS with support of additional Codecs. The library used therefore is located here: [Multithreading Library](https://github.com/mcmilk/zstdmt)
You can install it in two ways:
1. full setup with additions within the GUI and an modified an Explorer context menu
2. just the codec plugin, which goes to your existing 7-Zip installation
# Status
[![Build status](https://ci.appveyor.com/api/projects/status/j9cwlxqe1g21c4dj?svg=true)](https://ci.appveyor.com/project/mcmilk/7-zip-zstd)
[![Latest stable release](https://img.shields.io/github/release/mcmilk/7-Zip-zstd.svg)](https://github.com/mcmilk/7-Zip-zstd/releases)
## Codec overview
1. [Zstandard] v1.3.0 is a real-time compression algorithm, providing high compression ratios. It offers a very wide range of compression / speed trade-off, while being backed by a very fast decoder.
- Levels: 1..22
2. [Brotli] v.0.6.0 is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.
- Levels: 0..11
3. [LZ4] v1.7.5 is lossless compression algorithm, providing compression speed at 400 MB/s per core (0.16 Bytes/cycle). It features an extremely fast decoder, with speed in multiple GB/s per core (0.71 Bytes/cycle). A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio.
- Levels: 1..12
4. [LZ5] v1.5 is a modification of LZ4 which gives a better ratio at cost of slower compression and decompression.
- Levels: 1..15
5. [Lizard] v1.0 is an efficient compressor with very fast decompression. It achieves compression ratio that is comparable to zip/zlib and zstd/brotli (at low and medium compression levels) at decompression speed of 1000 MB/s and faster.
- Levels 10..19 (fastLZ4) are designed to give about 10% better decompression speed than LZ4
- Levels 20..29 (LIZv1) are designed to give better ratio than LZ4 keeping 75% decompression speed
- Levels 30..39 (fastLZ4 + Huffman) adds Huffman coding to fastLZ4
- Levels 40..49 (LIZv1 + Huffman) give the best ratio, comparable to zlib and low levels of zstd/brotli, but with a faster decompression speed
## 7-Zip Zstandard Edition (full setup, with GUI and Explorer integration)
### Installation (via setup)
1. download the setup from here [7-Zip ZS Releases](https://github.com/mcmilk/7-Zip-zstd/releases)
2. install it, like the default [7-Zip]
3. use it ;)
4. you may check, if the 7-Zip can deal with [Zstandard] or other codecs via this command: `7z.exe i`
The output should look like this:
```
7-Zip 17.00 ZS v1.3.0 R1 (x64) : Copyright (c) 1999-2017 Igor Pavlov
Libs:
0 c:\Program Files\7-Zip-Zstandard\7z.dll
Formats:
...
0 CK xz xz txz (.tar) FD 7 z X Z 00
0 Z z taz (.tar) 1F 9D
0 CK zstd zst tzstd (.tar) 0 x F D 2 F B 5 2 5 . . 0 x F D 2 F B 5 2 8 00
0 C F 7z 7z 7 z BC AF ' 1C
0 F Cab cab M S C F 00 00 00 00
...
Codecs:
0 4ED 303011B BCJ2
0 ED 3030103 BCJ
0 ED 3030205 PPC
0 ED 3030401 IA64
0 ED 3030501 ARM
0 ED 3030701 ARMT
0 ED 3030805 SPARC
0 ED 20302 Swap2
0 ED 20304 Swap4
0 ED 40202 BZip2
0 ED 0 Copy
0 ED 40109 Deflate64
0 ED 40108 Deflate
0 ED 3 Delta
0 ED 21 LZMA2
0 ED 30101 LZMA
0 ED 30401 PPMD
0 D 40301 Rar1
0 D 40302 Rar2
0 D 40303 Rar3
0 D 40305 Rar5
0 ED 4F71102 BROTLI
0 ED 4F71104 LZ4
0 ED 4F71106 LIZARD
0 ED 4F71105 LZ5
0 ED 4F71101 ZSTD
0 ED 6F10701 7zAES
0 ED 6F00181 AES256CBC
```
### Usage and features of the full installation
- compression and decompression for [Brotli], [Lizard], [LZ4], [LZ5] and [Zstandard] within the 7-Zip container format
- compression and decompression of [Lizard] (`.liz`), [LZ4] (`.lz4`), [LZ5] (`.lz5`) and [Zstandard] (`.zst`) files
- included [lzip] decompression support, patch from: http://download.savannah.gnu.org/releases/lzip/7zip/
- right click and _"Add to xy.7z"_ will use the last selected method (codec, level and threads)
- the FileManager ListBox will show more information about these codecs now
```
7z a archiv.7z -m0=zstd -mx0 Zstandard Fastest Mode, without BCJ preprocessor
7z a archiv.7z -m0=zstd -mx1 Zstandard Fast mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=zstd -mx.. ...
7z a archiv.7z -m0=zstd -mx21 Zstandard 2nd Slowest Mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=zstd -mx22 Zstandard Ultra Mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=lz4 -mx0 LZ4 Fastest Mode, without BCJ preprocessor
7z a archiv.7z -m0=lz4 -mx1 LZ4 Fast mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=lz4 -mx.. ...
7z a archiv.7z -m0=lz4 -mx12 LZ4 Ultra Mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=lz5 -mx0 LZ5 Version 1.5 Fastest Mode, without BCJ preprocessor
7z a archiv.7z -m0=lz5 -mx1 LZ5 Version 1.5 Fast mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=lz5 -mx.. ...
7z a archiv.7z -m0=lz5 -mx16 LZ5 Version 1.5 Ultra Mode, with BCJ preprocessor on executables
7z x -so test.tar.zstd | 7z l -si -ttar
-> show contents of zstd compressed tar archiv test.tar.zstd
7z x -so test.tar.lz | 7z l -si -ttar
-> show contents of lzip compressed tar archiv test.tar.lz
```
![Explorer inegration](https://mcmilk.de/projects/7-Zip-zstd/Add-To-Archive.png "Add to Archiv Dialog with ZSTD options")
![File Manager](https://mcmilk.de/projects/7-Zip-zstd/Fileman.png "File Manager with the Listing of an Archiv")
![Methods](https://mcmilk.de/projects/7-Zip-zstd/Methods.png "Methods")
## Zstandard codec Plugin for 7-Zip
### Installation (via plugin)
1. download the codec archiv from here [7-Zip ZS Releases](https://github.com/mcmilk/7-Zip-zstd/releases)
2. create a new directory named "Codecs"
3. put in there the zstd-x32.dll or the zstd-x64.dll, depending on your 7-Zip installation
- normally, the x32 should go to: "C:\Program Files (x86)\7-Zip\Codecs"
- the x64 version should go in here: "C:\Program Files\7-Zip\Codecs"
4. After this, you may check if the dll is correctly installed via this command: `7z.exe i`
The output should look like this:
```
7-Zip 17.00 beta (x64) : Copyright (c) 1999-2017 Igor Pavlov : 2017-04-29
Libs:
0 c:\Program Files\7-Zip\7z.dll
1 c:\Program Files\7-Zip\Codecs\brotli-x64.dll
2 c:\Program Files\7-Zip\Codecs\lizard-x64.dll
3 c:\Program Files\7-Zip\Codecs\lz4-x64.dll
4 c:\Program Files\7-Zip\Codecs\lz5-x64.dll
5 c:\Program Files\7-Zip\Codecs\zstd-x64.dll
...
Codecs:
0 4ED 303011B BCJ2
0 ED 3030103 BCJ
0 ED 3030205 PPC
0 ED 3030401 IA64
0 ED 3030501 ARM
0 ED 3030701 ARMT
0 ED 3030805 SPARC
0 ED 20302 Swap2
0 ED 20304 Swap4
0 ED 40202 BZip2
0 ED 0 Copy
0 ED 40109 Deflate64
0 ED 40108 Deflate
0 ED 3 Delta
0 ED 21 LZMA2
0 ED 30101 LZMA
0 ED 30401 PPMD
0 D 40301 Rar1
0 D 40302 Rar2
0 D 40303 Rar3
0 D 40305 Rar5
0 ED 6F10701 7zAES
0 ED 6F00181 AES256CBC
1 ED 4F71102 BROTLI
2 ED 4F71106 LIZARD
3 ED 4F71104 LZ4
4 ED 4F71105 LZ5
5 ED 4F71101 ZSTD
```
### Usage (codec plugin)
- compression and decompression for [Brotli], [Lizard], [LZ4], [LZ5] and [Zstandard] within the 7-Zip container format
- you can only create `.7z` files, the files like `.lz4`, `.lz5` and `.zst` are not covered by the plugins
- when compressing binaries (*.exe, *.dll), you have to explicitly disable the bcj2 filter via `-m0=bcj`,
when using only the plugin dll's
- so the usage should look like this:
```
7z a archiv.7z -m0=bcj -m1=zstd -mx1 Fast mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=bcj -m1=zstd -mx.. ...
7z a archiv.7z -m0=bcj -m1=zstd -mx21 2nd Slowest Mode, with BCJ preprocessor on executables
7z a archiv.7z -m0=bcj -m1=zstd -mx22 Ultra Mode, with BCJ preprocessor on executables
```
## Codec Plugin for Total Commander
- download [TotalCmd.7z](https://github.com/mcmilk/7-Zip-zstd/releases)
- install it, by replacing the files `tc7z.dll` and `tc7z64.dll` with the new ones
- you can check the Total Commander Forum for more information about this [DLL Files](http://ghisler.ch/board/viewtopic.php?p=319216)
- decompression for [Brotli], [Lizard], [LZ4], [LZ5] and [Zstandard] ot the 7-Zip `.7z` format
will work out of the box with Total Commander now :-)
## Benchmarks
For the benchmarks I am using Windows 7 64bit on my Laptop which has the following Hardware:
- Intel i7-3632QM, limited to 2,2GHz, 16GB RAM, disabled swap space
- the compression benchmark is read / written to an 4 GiB [ImDisk]
- the decompression benchmark is also done in RAM via: `7z t archiv.7z`
- the tool for measuring the times is [wtime](https://github.com/mcmilk/wtime), together with some [scripts](https://github.com/mcmilk/7-Zip-Benchmarking)
- the testfile is generated via [generate-mcorpus](https://github.com/mcmilk/7-Zip-Benchmarking/blob/master/generate-mcorpus)
![Compression Speed vs Ratio](https://mcmilk.de/projects/7-Zip-zstd/dl/compr-v120.png "Compression Speed vs Ratio")
![Decompression Speed](https://mcmilk.de/projects/7-Zip-zstd/dl/decomp-v120.png "Decompression Speed per Level")
![Memory at Compression](https://mcmilk.de/projects/7-Zip-zstd/dl/MemCompr.png "Memory usage at Compression")
![Memory at Decompression](https://mcmilk.de/projects/7-Zip-zstd/dl/MemDecomp.png "Memory usage at Decompression")
## License and redistribution
- the same as the original 7-Zip, which means GNU LGPL
## Links
- [7-Zip Homepage](http://www.7-zip.org/)
- [7-Zip Zstandard Homepage](https://mcmilk.de/projects/7-Zip-zstd/)
- [Request for inclusion](https://sourceforge.net/p/sevenzip/discussion/45797/thread/a7e4f3f3/) into the mainline 7-Zip:
- result, will currently not included :(
## Donate
You find this project useful, maybe you consider a donation ;-)
[![paypal](https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif)](https://www.paypal.me/TinoReichardt)
## Version Information
- 7-Zip ZS Version 17.00
- [Brotli] Version 0.6.0
- [Lizard] Version 1.0
- [LZ4] Version 1.7.5
- [LZ5] Version 1.5
- [Zstandard] Version 1.3.0
/TR 2017-07-12
[7-Zip]:http://www.7-zip.org/
[lzip]:http://www.nongnu.org/lzip/
[Brotli]:https://github.com/google/brotli/
[LZ4]:https://github.com/lz4/lz4/
[LZ5]:https://github.com/inikep/lz5/
[Zstandard]:https://github.com/facebook/zstd/
[Lizard]:https://github.com/inikep/lizard/
[ImDisk]:https://sourceforge.net/projects/imdisk-toolkit/
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