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https://github.com/boydjohnson/yajlish
streaming, event-based json parser
https://github.com/boydjohnson/yajlish
Last synced: 11 days ago
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streaming, event-based json parser
- Host: GitHub
- URL: https://github.com/boydjohnson/yajlish
- Owner: boydjohnson
- License: apache-2.0
- Created: 2020-07-05T20:25:30.000Z (over 4 years ago)
- Default Branch: main
- Last Pushed: 2022-03-22T20:00:32.000Z (over 2 years ago)
- Last Synced: 2024-08-08T18:58:23.103Z (3 months ago)
- Language: Rust
- Homepage: https://docs.rs/yajlish
- Size: 101 KB
- Stars: 5
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Yajlish - Rust event-based JSON parser
Write tools to parse json when you don't know its exact structure **and** can't load it all into memory.
- based loosely on [yajl](https://github.com/yajl/yajl)
- includes a JSON -> ndjson converter with the feature "ndjson"
[Docs](https://docs.rs/yajlish)
### Libraries you probably need instead of this library
- [rust-json](https://crates.io/crates/json)
- [serde_json](https://crates.io/crates/serde_json)
### Usage
Suppose you wanted to parse the count of all JSON object keys that are named 'foo'.
```rust
use yajlish::{Context, Handler, Status};
pub struct FooCountHandler {
count: usize,
}
impl Handler for FooCountHandler {
fn handle_map_key(&mut self, _ctx: &Context, key: &str) -> Status {
if key == "\"foo\"" {
self.count += 1;
}
Status::Continue
}
fn handle_null(&mut self, _ctx: &Context) -> Status {
Status::Continue
}
fn handle_bool(&mut self, _ctx: &Context, boolean: bool) -> Status {
Status::Continue
}
fn handle_double(&mut self, _ctx: &Context, val: f64) -> Status {
Status::Continue
}
fn handle_int(&mut self, _ctx: &Context, val: i64) -> Status {
Status::Continue
}
fn handle_string(&mut self, _ctx: &Context, val: &str) -> Status {
Status::Continue
}
fn handle_start_map(&mut self, _ctx: &Context) -> Status {
Status::Continue
}
fn handle_start_array(&mut self, _ctx: &Context) -> Status {
Status::Continue
}
fn handle_end_map(&mut self, _ctx: &Context) -> Status {
Status::Continue
}
fn handle_end_array(&mut self, _ctx: &Context) -> Status {
Status::Continue
}
}
```
# License
This library is licensed under the Apache 2.0 License.