Java

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. Chilkat2 Java

import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // We have the following string with some us-ascii chars escaped like this:
        String s = "\u007b\"responseContext\":\u007b\"";

        // 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..

        StringBuilder sb = new StringBuilder();

        sb.append(s);
        int numReplaced = sb.replace("\\x", "\\u00");

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

        // Show the decoded string
        System.out.println(sb.getAsString());

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