Url Parsing in Scilab

Here’s the translation of the URL parsing example from Go to Scilab:

// We'll parse this example URL, which includes a
// scheme, authentication info, host, port, path,
// query params, and query fragment.
s = "postgres://user:pass@host.com:5432/path?k=v#f";

// Parse the URL and ensure there are no errors.
try
    u = url_parse(s);
catch
    error("Failed to parse URL");
end

// Accessing the scheme is straightforward.
disp(u.scheme);

// User contains all authentication info; extract username and password.
disp(u.user);
disp(u.user.name);
disp(u.user.password);

// The Host contains both the hostname and the port,
// if present. Use strsplit to extract them.
disp(u.host);
host_parts = strsplit(u.host, ":");
host = host_parts(1);
port = host_parts(2);
disp(host);
disp(port);

// Here we extract the path and the fragment after the #.
disp(u.path);
disp(u.fragment);

// To get query params in a string of k=v format,
// use query. You can also parse query params
// into a struct.
disp(u.query);
query_params = url_decode(u.query);
disp(query_params);
disp(query_params.k);

This Scilab code demonstrates URL parsing using the url_parse function, which is part of Scilab’s URL handling capabilities. Here’s a breakdown of the translation:

1. We use url_parse to parse the URL string.
2. Error handling is done using a try-catch block.
3. The parsed URL components are accessed as fields of the returned structure.
4. For splitting the host and port, we use strsplit function.
5. Query parameters are handled using url_decode function.

Note that Scilab doesn’t have a built-in function exactly equivalent to Go’s net.SplitHostPort, so we use a simple strsplit operation instead.

To run this program, save it as a .sce file and execute it in Scilab. The output will show the different components of the parsed URL.

Please note that Scilab’s URL parsing capabilities might not be as extensive as Go’s, so some advanced features or edge cases might not be handled in the same way. This example provides a basic demonstration of URL parsing in Scilab.