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Tom Alexander 2020-06-27 16:57:21 -04:00
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An implementation of the [LinkedIn fork of DustJS](https://www.dustjs.com/) written in rust.
**NOT RECOMMENDED FOR PUBLIC USE**
**WARNING: Early-stage project**
This code is available free and open source under the [0BSD](https://choosealicense.com/licenses/0bsd/), but it is a very early-stage project. You're welcome to use it, fork it, print it out and fold it into a hat, etc... but you will find that this project is not yet polished nor feature complete. While this repository uses the 0BSD license which does not require the inclusion of a copyright notice/text in any distribution, it depends on [nom](https://github.com/Geal/nom) which is under the MIT license, the Rust standard library which is [dual licensed](https://github.com/rust-lang/rust/issues/67014), serde_json which is [dual licensed](https://github.com/serde-rs/json), and serde which is [dual licensed](https://github.com/serde-rs/serde).
While I've added a lot of tests proving a byte-for-byte compatibility with the official LinkedIn DustJS implementation, this project has not (afaik) been used in any sort of large production environment. If you find any incompatibilities between this implementation and the LinkedIn DustJS implementation, please let me know (or even better: commit a test under `js/test_cases`!).
## Differences between duster and LinkedIn DustJS
### Context Helpers
LinkedIn DustJS supports embedding javascript functions inside the render context itself. I will never be adding a javascript engine to this project, so those functions will not work in duster. I do have two plans to provide similar functionality:
1. In the future I plan to officially support embedding rust functions inside your render context. I believe this functionality is already possible by wrapping your function inside a struct and putting your logic in the render function, but I'm hoping to provide a more standardized way to accomplish this.
2. In the future I plan to attempt to compile this code to web assembly for running on the frontend. I assume this would also allow me to execute javascript using the browser's javascript engine, but I have not looked into this yet.
### Unicode support
The parser combinator library that I am using (nom) does not support unicode characters. In the future I will fix this, either by writing new parsers for the nom framework or by writing my own parser combinator framework. I'd prefer the former option since using a widely used parser combinator framework allows for greater interoperability across other projects (for example, if a nom-based html parser wanted to add support for parsing dust templates inside an `text/x-dust-template` tag, they could simply embed my parser inside theirs).
## Dependencies
While this repository uses the [0BSD license](https://choosealicense.com/licenses/0bsd/) which does not require the inclusion of a copyright notice/text in any distribution, it depends on some bsd-style licensed libraries including (but potentially not limited to):
- the Rust standard library which is [dual licensed](https://github.com/rust-lang/rust/issues/67014).
- [nom](https://github.com/Geal/nom) which is under the MIT license.
- [serde](https://github.com/serde-rs/serde) which is dual licensed.
- [serde_json](https://github.com/serde-rs/json) which is dual licensed but only used in the binary, not in the library
I am not a lawyer, and I am not your lawyer. This is not legal advice, but I believe attribution for these projects and their dependencies would be required under the terms of their licenses.