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. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // We have the following string with some us-ascii chars escaped like this:
    String s = "\x7b\x22responseContext\x22:\x7b\x22";

    // 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..

    CkStringBuilder sb = new CkStringBuilder();

    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":{"
  }
}