#output #structured #cli #line #arguments #instance #printed

structured-output

A library for structured CLI output that can be displayed as either printed lines or JSON

2 releases

0.1.1 May 10, 2023
0.1.0 May 10, 2023

#3 in #printed

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643 downloads per month
Used in 8 crates

Apache-2.0

5KB

structured-output Rust crate

StructuredOutput is a Rust library that provides a struct for handling structured output with both a string and a JSON value.

Installation

To use this library in your Rust project, add the following to your Cargo.toml file:

[dependencies]
structured_output = "0.1.0"

Usage

You can then create a new StructuredOutput instance using the new method, which takes a string and a JSON value as arguments:

let lines = "Hello world!";
let json = serde_json::json!({ "message": lines });
let output = StructuredOutput::new(lines, json.clone());

You can retrieve the string and JSON value separately using the lines and json methods:

assert_eq!(output.lines(), "Hello world!");
assert_eq!(output.json(), &json);

You can also get the JSON value as a JSON string or a pretty-printed JSON string using the to_json_string and to_json_pretty methods:

assert_eq!(output.to_json_string(), "{\"message\":\"Hello world!\"}");
assert_eq!(output.to_json_pretty(), "{\n  \"message\": \"Hello world!\"\n}");

The StructuredOutput implementation of the Display trait defaults to the string value. You can print the string value directly with the println! macro:

println!("{}", output);

License

This library is licensed under the Apache 2.0 License.

Dependencies

~0.7–1.6MB
~33K SLoC