Testing parsing of urls into oci references

main.rs

use oci_distribution::{ParseError, Reference};
use std::str::FromStr;
use url::Url;

fn build_oci_reference(url: Url) -> Result<Reference, ParseError> {
    Reference::from_str(
        url.as_ref()
            .strip_prefix("registry://")
            .unwrap_or_else(|| url.as_ref()),
    )
}

fn main() {
    let urls = vec![
        "registry://busybox",
        "registry://busybox:v0.1.0",
        "registry://flavio/awesome-stuff:v0.1.0",
        "registry://flavio/awesome-stuff",
        "registry://0.0.0.0:433/kubewarden/policies/psp-capabilities",
    ];

    for url_str in urls {
        print!("Parsing {} ... ", url_str);
        let url = match Url::parse(url_str) {
            Ok(url) => {
                println!("OK");
                url
            }
            Err(e) => {
                println!("ERR: {:?}", e);
                println!();
                continue;
            }
        };

        print!("building oci reference for {} ... ", url);
        match build_oci_reference(url) {
            Ok(reference) => {
                println!("OK");
                println!("  - registry: |{:?}|", reference.registry());
                println!("  - repository: |{:?}|", reference.repository());
                println!("  - tag: |{:?}|", reference.tag());
                println!("  - whole: |{}|", reference.whole());
            }
            Err(e) => {
                println!("ERR {:?}", e);
            }
        }
        println!();
    }
}

This produces the following output:

Parsing registry://busybox ... OK
building oci reference for registry://busybox ... OK
  - registry: |""|
  - repository: |"busybox"|
  - tag: |None|
  - whole: |busybox|

Parsing registry://busybox:v0.1.0 ... ERR: InvalidPort

Parsing registry://flavio/awesome-stuff:v0.1.0 ... OK
building oci reference for registry://flavio/awesome-stuff:v0.1.0 ... OK
  - registry: |"flavio"|
  - repository: |"awesome-stuff"|
  - tag: |Some("v0.1.0")|
  - whole: |flavio/awesome-stuff:v0.1.0|

Parsing registry://flavio/awesome-stuff ... OK
building oci reference for registry://flavio/awesome-stuff ... OK
  - registry: |"flavio"|
  - repository: |"awesome-stuff"|
  - tag: |None|
  - whole: |flavio/awesome-stuff|

Parsing registry://0.0.0.0:433/kubewarden/policies/psp-capabilities ... OK
building oci reference for registry://0.0.0.0:433/kubewarden/policies/psp-capabilities ... OK
  - registry: |"0.0.0.0:433"|
  - repository: |"kubewarden/policies/psp-capabilities"|
  - tag: |None|
  - whole: |0.0.0.0:433/kubewarden/policies/psp-capabilities|