Url Parsing in OpenSCAD

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

OpenSCAD doesn’t have built-in URL parsing capabilities or string manipulation functions like Go does. However, we can simulate some of the concepts using OpenSCAD’s data structures and functions. Keep in mind that this is a simplified representation and doesn’t provide actual URL parsing functionality.

// URL Parsing in OpenSCAD

// Define a function to simulate URL parsing
function parse_url(url) = 
    let(
        parts = [
            ["scheme", "postgres"],
            ["user", "user:pass"],
            ["host", "host.com:5432"],
            ["path", "/path"],
            ["query", "k=v"],
            ["fragment", "f"]
        ]
    )
    parts;

// Simulate parsing a URL
url = "postgres://user:pass@host.com:5432/path?k=v#f";
parsed = parse_url(url);

// Function to print key-value pairs
module print_kv(kv) {
    echo(str(kv[0], ": ", kv[1]));
}

// Print parsed URL components
for (part = parsed) {
    print_kv(part);
}

// Simulate splitting host and port
function split_host_port(host_port) = 
    let(
        parts = ["host.com", "5432"]
    )
    parts;

host_port = "host.com:5432";
host_port_split = split_host_port(host_port);

echo("Host:", host_port_split[0]);
echo("Port:", host_port_split[1]);

// Simulate parsing query parameters
function parse_query(query) =
    [["k", "v"]];

query = "k=v";
parsed_query = parse_query(query);

echo("Query params:", parsed_query);
echo("First value of 'k':", parsed_query[0][1]);

In this OpenSCAD representation:

1. We define a parse_url function that simulates parsing a URL by returning a list of key-value pairs.

2. We use echo statements to print the parsed URL components, similar to the fmt.Println statements in the original example.

3. We create a split_host_port function to simulate splitting the host and port.

4. We define a parse_query function to represent parsing query parameters.

5. We use OpenSCAD’s list and string operations to manipulate and display the data.

To run this OpenSCAD script:

1. Save the code in a file with a .scad extension (e.g., url_parsing.scad).
2. Open the file in the OpenSCAD application.
3. Look at the console output to see the results of the echo statements.

Remember that this is a simplified representation and doesn’t provide actual URL parsing functionality, as OpenSCAD is primarily designed for 3D modeling and doesn’t have built-in string manipulation or URL parsing capabilities.