Rust

Decode 2-digit Hex Escaped

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Demonstrates how to replace escaped us-ascii chars such as \x7b and \x22 with the chars. Rust

// We have the following string with some us-ascii chars escaped like this:
let s = "\x7b\x22responseContext\x22:\x7b\x22".to_string();

// Note: The above escaping does not conform to any standard format (as far as I know).
// Chilkat does not have anything to decode from the above.
// However, we can 1st transform into a standard format, and then decode..

// JSON escapes chars outside us-ascii like this:  "Hello, \ud83d\ude03!"
// We can transform the above to this:  "\u007b\u0022responseContext\u0022:\u007b\u0022"
// And then decode..

let sb = chilkat::StringBuilder::new();

let _ = sb.append(&s);
let num_replaced = sb.replace("\\x", "\\u00");

// Now decode from "json" escapes
let _ = sb.decode("json", "utf-8");

// Show the decoded string
println!("{}", sb.get_as_string().unwrap_or_default());

// Here's the result: {"responseContext":{"