Instant web search results from DuckDuckGo in Jolie

DuckDuckGo has an API for instant search results. It’s really easy to invoke and it can reply with JSON or XML data (here I use XML).

Here’s a snippet that uses it.

include "console.iol"

outputPort DuckDuckGo {
Location: "socket://api.duckduckgo.com:443/"
Protocol: https {
  .osc.search.alias = "?q=%{q}&format=xml&t=jolie_example";
  .osc.search.method = "get"
}
RequestResponse: search // I feel lazy, so I'm using dynamic typing
}

main
{
  // Get the results
  search@DuckDuckGo( { .q = args[0] } )( response );

  // Print results
  println@Console( "# Found " + #response.Results.Result + " result(s)" )();
  for( result in response.Results.Result ) {
    println@Console( "\n" + result.Text + "\n" + result.FirstURL )()
  };
  println@Console()();

  // Print related topics
  println@Console( "# Found " + #response.RelatedTopics.RelatedTopic + " related topic(s)" )();
  for( topic in response.RelatedTopics.RelatedTopic ) {
    println@Console( "\n" + topic.Text + "\n" + topic.FirstURL )()
  }
}

Just save this as a file, say search.ol, and then you can use it to fetch some results. For example, try jolie search.ol DuckDuckGo or jolie search.ol "Jolie Programming Language".

A note about the rules from DuckDuckGo at the time of this writing. If you use this in some project, remember to update the t parameter in the alias of operation search from jolie_example to something that describes your own project.