redactor.rs

use serde_json::Value;

fn redact_props_strings(keys_to_redact: &Vec<String>, value: &mut Value, clear: bool) {
    match value {
        Value::Object(map) => {
            for (k, v) in map {
                redact_props_strings(&keys_to_redact, v, keys_to_redact.contains(&k));
            }
        }
        Value::Array(array) => {
            for (_, v) in array.iter_mut().enumerate() {
                redact_props_strings(&keys_to_redact, v, false);
            }
        }
        Value::String(s) => {
            if clear {
                s.clear();
            }
        }
        _ => (),
    }
}

fn main() {
    let keys_to_redact: Vec<String> = vec!["prop2".to_string(), "prop4".to_string()];

    let test0 = r#"{
  "prop0": {
    "prop1": {
      "prop2": "redact me",
      "prop3": "leave me"
    }
  },
  "prop4": "redact me"
}"#;
    let mut value0: Value = serde_json::from_str(&test0).expect("error");
    redact_props_strings(&keys_to_redact, &mut value0, false);
    println!("{}", serde_json::to_string_pretty(&value0).unwrap());

    let test1 = r#"{
  "prop0": {
    "prop1": [{
      "prop2": "redact me",
      "prop3": "leave me"
    }, {
       "prop2": "redact me",
      "prop5": "leave me"
    }]
  },
  "prop4": "redact me"
}"#;
    let mut value1: Value = serde_json::from_str(&test1).expect("error");
    redact_props_strings(&keys_to_redact, &mut value1, false);
    println!("{}", serde_json::to_string_pretty(&value1).unwrap());
}