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#[derive(Debug)]
enum DrvOutput<'a> {
Out,
Bin,
Lib,
Man,
Dev,
DevDoc,
DevMan,
Other(&'a [u8]),
}
#[derive(Debug)]
struct DrvWithOutput<'a> {
drv_path: &'a [u8],
output: DrvOutput<'a>,
}
fn parse_drv_path<'a>(path: &'a [u8]) -> Option<DrvWithOutput<'a>> {
let mut split = path.split(|c| char::from(c.to_owned()) == '!');
split.next().map(|p| DrvWithOutput {
drv_path: p,
output: split.next().map(|s| DrvOutput::Other(s))
.unwrap_or(DrvOutput::Out),
}).and_then(|parsed| match split.next() {
Some(_) => None,
None => Some(parsed),
})
}
fn main() -> std::io::Result<()> {
println!("{:?}", parse_drv_path(b"/nix/store/58i9psln992xjwk8ig1v3l3a4p9sslnp-lowdown-0.7.9.drv"));
Ok(())
}
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