JSONPath for Rust

The library is in hard development stage.

Example

```rust extern crate jsonpath; extern crate serde_json;

use jsonpath::Selector; use serde_json::Value;

fn main() { let jsondoc = r#" { "books": [ { "title": "Der schwarze Obelist", "author": "Erich Maria Remarque" }, { "title": "Le mur", "author": "Jean-Paul Sartre" } ] } "#;

// Parse JSON document
let json: Value = serde_json::from_str(jsondoc).unwrap();

// Create a JSONPath selector
let selector = Selector::new("$.books.*.title").unwrap();

// Apply the selector to the JSON and convert Vec<&Value> into Vec<&str>
let titles: Vec<&str> = selector.find(&json)
    .map(|t| t.as_str().unwrap())
    .collect();

assert_eq!(titles, vec!["Der schwarze Obelist", "Le mur"]);

} ```

Roadmap

• [ ] Operators:
  • [x] $ - root element
  • [x] .<name> - named child element
  • [x] * - wildcard (any child item)
  • [x] [<number>] - indexed element in array
  • [x] [<start>:<end>] - slice
  • [x] [:<end>] - slice (to)
  • [x] [<start>:] - slice (from)
• [ ] Handy test helpers
• [ ] Good integration test coverage
• [ ] Benchmarks
• [ ] Refactor
• [ ] Improve error messages
• [ ] Review unwraps
• [ ] Review the public API (rename Selector -> Path ?)
• [ ] Publish a new version
• [ ] Mutable iterator
• [ ] Support filters
  • [x] [?(<expression>)] - Filter expression. Expression must evaluate to a boolean value.
  • [x] @ - current element
  • [x] operator ==
  • [x] operator !=
  • [x] operator >
  • [x] operator <

License

MIT © Sergey Potapov

Contributors

• greyblake Sergey Potapov - creator, maintainer.
• MarcAntoine-Arnaud Marc-Antoine ARNAUD - filters support