jawk 0.1.16

JSON AWK.
Documentation 
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use base64::prelude::*;
use std::rc::Rc;

use crate::processor::Context;

use crate::{
    functions_definitions::{Arguments, Example, FunctionDefinitions},
    json_value::JsonValue,
    selection::Get,
};

pub fn get() -> FunctionDefinitions {
    FunctionDefinitions::new("base63_decode", 1, 1, |args| {
        struct Impl(Vec<Rc<dyn Get>>);
        impl Get for Impl {
            fn get(&self, value: &Context) -> Option<JsonValue> {
                let Some(JsonValue::String(str)) = self.0.apply(value, 0) else {
                    return None;
                };
                let Ok(data) = BASE64_STANDARD.decode(str) else {
                    return None;
                };
                if let Ok(str) = String::from_utf8(data) {
                    Some(str.into())
                } else {
                    None
                }
            }
        }
        Rc::new(Impl(args))
    })
        .add_alias("base64")
        .add_description_line("Decode a BASE64 string and try to convert to a string using UTF8.")
        .add_description_line(
            "Return nothing if the first and only argument is not a valid UTF8 string encoded using BASE64."
        )
        .add_example(
            Example::new()
                .add_argument("\"dGVzdA==\"")
                .expected_output("\"test\"")
        )
        .add_example(
            Example::new()
                .add_argument("\"test\"")
        )
        .add_example(
            Example::new()
                .add_argument("\"wyg=\"")
        )
        .add_example(
            Example::new()
                .add_argument("100")
        )
}