Function extract_json_to_string

pub fn extract_json_to_string(input: &str) -> Result<String, Box<dyn Error>>

Extracts JSON from a string and returns the result as a String.

This is a convenience wrapper around JSONParser::extract_json_from_stream that handles buffer management and returns a String directly.

Arguments

• input - The string slice containing mixed text and JSON.

Returns

• Ok(String) - The extracted JSON as a String.
• Err(Error) - If an error occurred during parsing or UTF-8 conversion.

Examples

use surfing::utils::extract_json_to_string;

let input = "Log message: {\"level\":\"info\",\"msg\":\"Hello\"} More text";
let json = extract_json_to_string(input).unwrap();
assert_eq!(json, "{\"level\":\"info\",\"msg\":\"Hello\"}");

use surfing::utils::extract_json_to_string;

// Works with multiple JSON objects
let input = "First: {\"id\":1} Second: {\"id\":2}";
let json = extract_json_to_string(input).unwrap();
assert_eq!(json, "{\"id\":1}{\"id\":2}");

Examples found in repository

examples/simple.rs (line 21)

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Input containing mixed text and JSON
    let inputs = [
        "System log: {\"level\":\"info\",\"component\":\"auth\",\"message\":\"User logged in\"} at 2023-06-15",
        "Error occurred: {\"code\":500,\"details\":{\"reason\":\"Database connection failed\"}}",
        "Metrics: [1, 2, 3, 4, 5] recorded at 12:34:56",
        "Configuration: {\"debug\":true,\"environment\":\"production\"} loaded successfully",
    ];
    
    println!("Extracting JSON from various text inputs:\n");
    
    for (i, input) in inputs.iter().enumerate() {
        // Extract the JSON directly to a string
        let json = extract_json_to_string(input)?;
        
        // Display the results
        println!("Input {}: {}", i + 1, input);
        println!("Extracted JSON: {}\n", json);
    }
    
    // You can also chain multiple processing steps
    let complex_input = "First config: {\"id\":1} Second config: {\"id\":2} Third: {\"id\":3}";
    println!("Complex input with multiple JSON objects: {}", complex_input);
    
    let extracted = extract_json_to_string(complex_input)?;
    println!("All extracted: {}", extracted);
    
    Ok(())
}