comparison rust/rhg/src/main.rs @ 49477:f3cd2d6eeef9

rhg: support "!" syntax for disabling extensions

This makes it so that calls in test-log.t do not fall back immediately because
of the disabled extension, instead going through the CLI parsing code, which
breaks because of invalid UTF-8 in a flag.

I *think* clap 3.x+ supports this? I'm not sure, and we have to upgrade the
minimum Rust version to use clap 3.x anyway which is out of scope for this
series, so let's just kick that can down the road a little bit.

49476:5846bc8a2855

        // All extensions are to be ignored, nothing to do here
        return Ok(());
    }

    let enabled: HashSet<&[u8]> = config
        .get_section_keys(b"extensions")
        .into_iter()
        .map(|extension| {
            // Ignore extension suboptions. Only `required` exists for now.
            // `rhg` either supports an extension or doesn't, so it doesn't
            // make sense to consider the loading of an extension.
            extension.split_2(b':').unwrap_or((extension, b"")).0
        })
        .collect();

    let mut unsupported = enabled;
    for supported in SUPPORTED_EXTENSIONS {

49477:f3cd2d6eeef9

        // All extensions are to be ignored, nothing to do here
        return Ok(());
    }

    let enabled: HashSet<&[u8]> = config
        .iter_section(b"extensions")
        .filter_map(|(extension, value)| {
            if value == b"!" {
                // Filter out disabled extensions
                return None;
            }
            // Ignore extension suboptions. Only `required` exists for now.
            // `rhg` either supports an extension or doesn't, so it doesn't
            // make sense to consider the loading of an extension.
            let actual_extension =
                extension.split_2(b':').unwrap_or((extension, b"")).0;
            Some(actual_extension)
        })
        .collect();

    let mut unsupported = enabled;
    for supported in SUPPORTED_EXTENSIONS {