easy_flag
docopt.rs
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| easy_flag | docopt.rs | |
|---|---|---|
| - | 4 | |
| 3 | 752 | |
| - | - | |
| 0.0 | 0.0 | |
| over 4 years ago | about 3 years ago | |
| Rust | Rust | |
| Apache License 2.0 | The Unlicense |
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easy_flag
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Tracking mentions began in Dec 2020.
docopt.rs
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Docopt.sh – Command-Line Argument Parser for Bash 3.2, 4, and 5
Consider using clap or possibly structopt instead.
It's a lovely way to internalize the CLI argument cultural norms, decrease confusing and verbose argument parsing, make argument parsing work-free for the developer, and make argument parsing a copy-paste across languages. There's no greater pleasure than iteratively adding options to your program by just adding a line of text
-n, --new-option Do something new
I honestly think making a docopt parser is just very hard, which may limit its future prospects.
[the docopt rust repo.]: https://github.com/docopt/docopt.rs
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Fedora to disallow CC0-licensed code
Ditto, I guess? :P (But obviously with the position on the Unlicense flipped.)
To address your indictment head-on: you suggesting the 0BSD as a better alternative is really missing my point. The 0BSD is not an alternative for my use case. The Unlicense is one of the very few overt "political" acts that I inject into the software I produce. Its purpose is to make a statement. The 0BSD doesn't do that IMO, so it's not actually an alternative that meets my advocacy goal.
You and Rick Moen seem to have the same apparent blind spot for this. See my conversation with him that started here (which might also clarify some aspects of my own position): https://github.com/docopt/docopt.rs/issues/1#issuecomment-42...
And finally, note that my dual licensing scheme is exactly a response to the "problems pointed out by quite a few people": https://github.com/BurntSushi/byteorder/issues/26
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Docopt
I like Docopt for quick scripts, used it both in Python and Rust projects. It is quite unflexible though.
The Rust Docopt implementation¹ was deprecated this year, which is probably good because clap v3 (https://github.com/clap-rs/clap) is so awesome. In a project of mine (tealdeer), I noticed that docopt.rs was responsible for the huge majority of CPU instructions when running the binary: https://github.com/dbrgn/tealdeer/issues/106#issuecomment-59... I then switched² to clap and shaved off almost a megabyte from the release binary³. Performance improved as well, time required for rendering a tldr page went down from ~15.9 ms to ~12.4 ms⁴. With the migration, we also managed to reduce a lot of custom validation logic and move this logic into the derive macro attributes.
¹ https://github.com/docopt/docopt.rs
- clap 3.0.0-rc.7
What are some alternatives?
clap-rs - A full featured, fast Command Line Argument Parser for Rust
structopt - Parse command line arguments by defining a struct.
docopt-ng - Humane command line arguments parser. Now with maintenance, typehints, and complete test coverage.
byteorder - Rust library for reading/writing numbers in big-endian and little-endian.
argc - A Bash CLI framework, also a Bash-based command runner.
typer - Typer, build great CLIs. Easy to code. Based on Python type hints.
cligen - Nim library to infer/generate command-line-interfaces / option / argument parsing; Docs at
tealdeer - A very fast implementation of tldr in Rust.
docopt - This project is no longer maintained. Please see https://github.com/jazzband/docopt-ng