Struct Json 

pub struct Json;

A lightweight, zero-dependency JSON extractor designed for maximum performance.

This struct provides a “fast-path” for parsing JSON response bodies without the overhead of full serialization libraries like Serde. It operates directly on string slices, making it ideal for high-speed CLI tools.

Dependencies

• Uses only the Rust Standard Library (std).
• Network operations are handled by native-tls.

Implementations

impl Json

pub fn extract(body: &str, path: &str) -> String

Extracts a value from a JSON string using dot-notation.

This method is format-agnostic, handling both minified and “pretty-printed” JSON by ignoring whitespace and tracking bracket depth to handle nested objects.

Path Syntax

• Keys: metadata.version
• Arrays: releases.0.v

Performance

Operates in O(N) time with minimal heap allocations.

Returns

Returns the value as an owned String, or "N/A" if the key is not found.

Example

use crator::Json;
 
let body = r#"{"stats": {"downloads": 56000}}"#;
let val = Json::extract(body, "stats.downloads");
assert_eq!(val, "56000");

pub fn extract_int(body: &str, path: &str) -> i64

Attempts to parse the extracted value as an i64. Returns 0 if extraction or parsing fails.

pub fn extract_u64(body: &str, path: &str) -> u64

Attempts to parse the extracted value as a u64. Returns 0 if extraction or parsing fails.

pub fn extract_float(body: &str, path: &str) -> f64

Attempts to parse the extracted value as an f64. Returns 0.0 if extraction or parsing fails.

pub fn extract_bool(body: &str, path: &str) -> bool

Attempts to parse the extracted value as a bool. Returns true if the extracted value is “true” (case-insensitive).