jsource
ZLib
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jsource | ZLib | |
---|---|---|
18 | 49 | |
631 | 5,219 | |
2.7% | - | |
9.7 | 8.9 | |
1 day ago | 2 days ago | |
C | C | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
jsource
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Crafting Self-Evident Code with D
The one other example I know that morphs the language to that extent and to the detriment of readability by C programmers is the J interpreter[1,2]. But, once again, nobody (that I’ve read) claims it’s good or clear C. (Good C for those who speak J, maybe; I wouldn’t know.)
For a way to morph C syntax that does make things better, see libmill[3].
[1] https://code.jsoftware.com/wiki/Essays/Incunabulum
- Show HN: Gemini client in 100 lines of C
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Want cleaner code? Use the rule of six
No, it was rhetorical, because it's obviously (to an APL-family programmer), not bad!
Your cultural prejudice is showing. There are good reasons APL is written the way it is, and this example is simply bringing those benefits to C by writing it in the dense APL style. There are other APL derivatives, like J[1] that are written the same way. These projects are well-maintained. They aren't collapsing under a load of technical debt. The style works. To them, it's clean code.
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Jd
You can view the code, but is not open source: https://github.com/jsoftware/jsource/blob/master/license.txt
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Someone earlier linked to Arthur Whitney's style of coding in the comments. Can we discuss this further? I am disturbed by what I saw.
This is the same dense style used in J.
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Why does old C code often declare functions or global variables in the scope it's used, rather than at the top of a source file or a header file?
All-in-all this example doesn't seem too bad. It's clear what happens and is easy to follow. If you wan't to see something remarkably terribly, check out Whitney style. It's used in APL/J/K family interpreters. Keep in mind, financial institutions run that code.
- Ask HN: Examples of Unusual Code Formatting Styles?
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if you code in J for 6 months, you will no longer think in loops, and if you stay with it for 2 years, you will see that looping code was an artifact of early programming languages, ready to be displayed in museums along with vacuum tubes
good first issue
ZLib
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ZLib VS jdeflate - a user suggested alternative
2 projects | 25 Nov 2023
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CVE-2023-4863: Heap buffer overflow in WebP (Chrome)
So the real issue here is that the lack of tree validation before the tree construction, I believe. I'm surprised that this check was not yet implemented (I actually checked libwebp to make sure that I was missing one). Given this blind spot, an automated test based on the domain knowledge is likely useless to catch this bug.
[1] https://github.com/madler/zlib/blob/master/examples/enough.c
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Notes: Advanced Node.js Concepts by Stephen Grider
In the source code of the Node.js opensource project, lib folder contains JavaScript code, mostly wrappers over C++ and function definitions. On the contrary, src folder contains C++ implementations of the functions, which pulls dependencies from the V8 project, the libuv project, the zlib project, the llhttp project, and many more - which are all placed at the deps folder.
- Exploring the Internals of Linux v0.01
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Quite OK Image is now my favorite asset format
A minimal viable Deflate decompressor is not exactly complex[1], although slower than mainline zlib.
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Zlib alternatives?
ZLibrary not zlib for anyone worried about archiving algorithms. https://zlib.net/ and all the Linux repositories are safe (AFAIK).
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Save File Corruption fix? PLEASE HELP
>The following is my educated guess at what to do next and I am a week-end warrior programmer at best. If someone with more experience comments, I would listen to them over me< If you have no programming experience, this may be a lost cause. It looks like the save file has a header area followed by a list of "zlib" compressed chunks. zlib.net may have a program that can open the save file and let you see the raw information inside it. Something after the header is garbled and it is preventing Save-Editors from decompressing that chunk OR from parsing what is inside of it. If you are lucky, the garbled bit will jump out at you and you can repair it.
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Zlib Critical Vulnerability
These appears to be the relevant changes:
2022-07-30: https://github.com/madler/zlib/commit/eff308af425b67093bab25...
2022-08-08: https://github.com/madler/zlib/commit/1eb7682f845ac9e9bf9ae3...
The second commit definitely fixed a null pointer dereference, I am not sure if the CVE is referencing something else that was fixed by the first commit.
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Gzip and Brotli Compression Level Estimator
It is actually possible to estimate the compression level without actually compressing everything again, because different levels use different strategies which can be identified in some cases. zlib in particular has three strategies [1] and preflate [2] leverages this to store the deflate stream reconstruction data without much bits.
[1] https://github.com/madler/zlib/blob/21767c6/deflate.c#L134-L...
[2] https://github.com/deus-libri/preflate/blob/master/preflate_...
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What does it take to be a good programmer?
It's still a heap of old school C spaghetti https://github.com/madler/zlib/commit/eff308af425b67093bab25...
What are some alternatives?
zstd - Zstandard - Fast real-time compression algorithm
LZ4 - Extremely Fast Compression algorithm
LZMA - (Unofficial) Git mirror of LZMA SDK releases
Onion - C library to create simple HTTP servers and Web Applications.
Snappy - A fast compressor/decompressor
Minizip-ng - Fork of the popular zip manipulation library found in the zlib distribution.
brotli - Brotli compression format
zlib-ng - zlib replacement with optimizations for "next generation" systems.
libarchive - Multi-format archive and compression library
LZFSE - LZFSE compression library and command line tool
OpenSSL - TLS/SSL and crypto library
zlib-ng - zlib replacement with optimizations for "next generation" systems. [Moved to: https://github.com/zlib-ng/zlib-ng]