parser

2 files changed, 51 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index b1fb7b7..b202f39 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -4,6 +4,8 @@ use std::process::{Command};
 use std::env;
 use std::path::Path;
 
+mod parser;
+
 fn substitute_vars(word: &str) -> String {
 	match word {
 		"~" => env::var("HOME").unwrap(),
diff --git a/src/parser.rs b/src/parser.rs
new file mode 100644
index 0000000..4b78944
--- /dev/null
+++ b/src/parser.rs
@@ -0,0 +1,49 @@
+use nom::{
+	IResult,
+	character::complete::alphanumeric0,
+	character::complete::alphanumeric1,	
+	character::complete::anychar,
+	bytes::complete::tag,
+	multi::many1,
+	multi::many0,
+	//branch::alt,
+	//combinator::opt,
+	sequence::tuple
+};
+
+fn command(i: &str) -> IResult<&str, String> {
+	match tuple((anychar,alphanumeric0))(i) {
+		Ok((rest, (c, s))) => {
+			let tmp = format!("{}{}", c, s);
+			Ok((rest, tmp))
+		},
+		Err(e) => Err(e)
+	}
+}
+
+fn parameter(i: &str) -> IResult<&str, &str> {
+	alphanumeric1(i)
+}
+
+fn ligature(i: &str) -> IResult<&str, char> {
+	match tag(";")(i) {
+		Ok((rest, c)) =>
+			Ok((rest, c.chars().nth(0).unwrap())),
+		Err(e) => Err(e)
+	}
+}
+
+fn command_line(i: &str) -> IResult<&str, Vec<String>> {
+	match tuple((command, many0(parameter)))(i) {
+		Ok((rest, (com, params))) => {
+			let mut cmd = vec!(com);
+			params.iter().for_each(|p| cmd.push(String::from(*p)));
+			Ok((rest, cmd))
+		},
+		Err(e) => Err(e)
+	}
+}
+
+fn command_string(i: &str) -> IResult<&str, Vec<(Vec<String>,char)>> {
+	many1(tuple((command_line, ligature)))(i)
+}