diff options
Diffstat (limited to 'third_party/rust/devd-rs/src/parser.rs')
| -rw-r--r-- | third_party/rust/devd-rs/src/parser.rs | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/third_party/rust/devd-rs/src/parser.rs b/third_party/rust/devd-rs/src/parser.rs new file mode 100644 index 0000000000..45738aa40c --- /dev/null +++ b/third_party/rust/devd-rs/src/parser.rs @@ -0,0 +1,158 @@ +use data::*; +use nom::branch::alt; +use nom::bytes::complete::take_while; +use nom::character::complete::{alphanumeric1, char, multispace1}; +use nom::sequence::delimited; + +fn val(i: &str) -> nom::IResult<&str, &str> { + alt((delimited(char('"'), take_while(|c| c != '"'), char('"')), take_while(|c| c != '\n' && c != ' ')))(i) +} + +named!(keyval <&str, (&str, &str)>, + do_parse!( + key: alphanumeric1 + >> char!('=') + >> val: val + >> (key, val) + ) + ); + +named!(keyvals <&str, BTreeMap<String, String> >, + map!( + many0!(terminated!(keyval, opt!(multispace1))), + |vec: Vec<_>| vec.into_iter().map(|(k, v)| (k.to_string(), v.to_string())).collect() + ) + ); + +named!(pub event <&str, Event>, + alt!( + do_parse!( + tag!("!") >> + tag!("system=") >> + sys: val >> + multispace1 >> + tag!("subsystem=") >> + subsys: val >> + multispace1 >> + tag!("type=") >> + kind: val >> + multispace1 >> + data: keyvals >> + (Event::Notify { system: sys.to_string(), subsystem: subsys.to_string(), kind: kind.to_string(), data: data }) + ) + | + do_parse!( + tag!("+") >> + dev: alphanumeric1 >> + multispace1 >> + tag!("at") >> + multispace1 >> + parent: keyvals >> + tag!("on") >> + multispace1 >> + loc: val >> + (Event::Attach { dev: dev.to_string(), parent: parent, location: loc.to_string() }) + ) + | + do_parse!( + tag!("-") >> + dev: alphanumeric1 >> + multispace1 >> + tag!("at") >> + multispace1 >> + parent: keyvals >> + tag!("on") >> + multispace1 >> + loc: val >> + (Event::Detach { dev: dev.to_string(), parent: parent, location: loc.to_string() }) + ) + | + do_parse!( + tag!("?") >> + multispace1 >> + tag!("at") >> + multispace1 >> + parent: keyvals >> + tag!("on") >> + multispace1 >> + loc: val >> + (Event::Nomatch { parent: parent, location: loc.to_string() }) + ) + ) +); + +#[cfg(test)] +mod tests { + use super::*; + + #[test] + fn test_notify() { + let txt = "!system=USB subsystem=INTERFACE type=ATTACH ugen=ugen0.2 vendor=0x1050 sernum=\"\" mode=host\n"; + let res = event(txt); + let mut data = BTreeMap::new(); + data.insert("ugen".to_owned(), "ugen0.2".to_owned()); + data.insert("vendor".to_owned(), "0x1050".to_owned()); + data.insert("sernum".to_owned(), "".to_owned()); + data.insert("mode".to_owned(), "host".to_owned()); + assert_eq!( + res, + Ok(( + "", + Event::Notify { + system: "USB".to_owned(), + subsystem: "INTERFACE".to_owned(), + kind: "ATTACH".to_owned(), + data: data, + } + )) + ) + } + + #[test] + fn test_attach() { + let txt = "+uhid1 at bus=0 sernum=\"\" on uhub1"; + let res = event(txt); + let mut data = BTreeMap::new(); + data.insert("bus".to_owned(), "0".to_owned()); + data.insert("sernum".to_owned(), "".to_owned()); + assert_eq!( + res, + Ok(( + "", + Event::Attach { + dev: "uhid1".to_owned(), + parent: data, + location: "uhub1".to_owned(), + } + )) + ) + } + + #[test] + fn test_detach() { + let txt = "-uhid1 at on uhub1"; + let res = event(txt); + let data = BTreeMap::new(); + assert_eq!( + res, + Ok(( + "", + Event::Detach { + dev: "uhid1".to_owned(), + parent: data.to_owned(), + location: "uhub1".to_owned(), + } + )) + ) + } + + #[test] + fn test_nomatch() { + let txt = "? at bus=0 on uhub1"; + let res = event(txt); + let mut data = BTreeMap::new(); + data.insert("bus".to_owned(), "0".to_owned()); + + assert_eq!(res, Ok(("", Event::Nomatch { parent: data, location: "uhub1".to_owned() }))) + } +} |