flxzt/rnote · error

Expected file with extension

Error message

Expected file with extension "{expected_ext}", found extension "{ext:?}", file "{}".

What it means

file_has_ext found the file but its extension does not match the expected one (e.g. an input was expected to be '.xopp' but had a different extension). The actual extension is included in the message via Debug formatting.

Solutions

1. Rename or re-export the file with the correct extension (e.g. mv drawing.txt drawing.xopp only if it truly is a XOPP file)
2. Double-check which command expects which format and pass the matching file
3. Verify the extension in scripts with Path::extension() before invoking

Example fix

// before
rnote-cli import sketch.rnote out.rnote   # expects .xopp
// after
rnote-cli import sketch.xopp out.rnote

fn has_ext(p: &Path, ext: &str) -> bool {
    p.extension().map_or(false, |e| e == ext)
}
assert!(has_ext(Path::new("sketch.xopp"), "xopp"));

fn is_xopp(p: &Path) -> bool {
    p.extension().map_or(false, |e| e == "xopp")
}

match result {
    Err(e) if e.to_string().contains("found extension") => {
        eprintln!("Wrong file type; the command expects a different extension");
    }
    other => other,
}

When it happens

Trigger: Supplying a file with the wrong extension to an argument validated with file_has_ext(path, "xopp") — e.g. renaming a PDF to .xopp, or passing an .rnote file where .xopp is required.

Common situations: Files downloaded without extensions; manual renames; mixing up the rnote and xopp inputs on import/export commands.

Understand the failure class

Background: "Invalid ... format", "must be in format X", "does not look like a ..." — invalid argument format errors across CLI tools and libraries — this error's family across 17 libraries.

Related errors

• Expected file with extension
• The output file " " needs to have a supported extension to…
• Expected directory, found file
• Expected file, found directory
• Failed to get filename from the supplied file

AI-assisted analysis of flxzt/rnote@bbc5354502 (2026-09-08). Data as JSON: /api/errors/1ec90d607ec549c3. Report an issue: GitHub.

Appendix: source

Thrown at crates/rnote-cli/src/validators.rs:27

    }
    Ok(())
}

pub(crate) fn path_is_file(path: &Path) -> anyhow::Result<()> {
    if !path.is_file() {
        return Err(anyhow::anyhow!(
            "Expected file, found directory \"{}\"",
            path.display()
        ));
    }
    Ok(())
}

pub(crate) fn file_has_ext(path: &Path, expected_ext: &str) -> anyhow::Result<()> {
    path_is_file(path)?;
    match path.extension() {
        Some(ext) if ext == expected_ext => Ok(()),
        Some(ext) => Err(anyhow::anyhow!(
            "Expected file with extension \"{expected_ext}\", found extension \"{ext:?}\", file \"{}\".",
            path.display()
        )),
        None => Err(anyhow::anyhow!(
            "Expected file with extension \"{expected_ext}\", no extension found for file \"{}\".",
            path.display()
        )),
    }
}

View on GitHub (pinned to bbc5354502)