1 files changed, 70 insertions, 0 deletions
diff --git a/src/commandline.rs b/src/commandline.rs
new file mode 100644
index 0000000..489eaa8
--- /dev/null
+++ b/src/commandline.rs
@@ -0,0 +1,70 @@
+use std::io::Error;
+use std::path::PathBuf;
+use std::process::ExitStatus;
+
+// ;   on prev cmd any
+// &&  on prev cmd okay
+// ||  on prev cmd fail
+
+mod command;
+use command::{Command, RunIf, RunResult};
+mod builtins;
+
+pub struct CommandLine(Vec<Command>);
+
+impl CommandLine {
+    pub fn new(line: &str) -> Self {
+        CommandLine(split(line))
+    }
+
+    pub fn run(&self,home: &PathBuf, mut status: Option<ExitStatus>) -> Result<Option<ExitStatus>, Error> {
+        for cmd in &self.0 {
+            if cmd.when.can_run(&status) {
+                match cmd.run(&home, &status)? {
+                    RunResult::Command(s) => status = Some(s),
+                    RunResult::Builtin => {}
+                }
+            }
+        }
+        Ok(status)
+    }
+}
+
+fn split(line: &str) -> Vec<Command> {
+    let mut r: Vec<Command> = Vec::new();
+
+    let mut next = line.chars().peekable();
+    let mut iter = line.chars().enumerate();
+
+    let mut start_idx = 0;
+    let mut state = RunIf::Always;
+
+    while let Some((i, v)) = {
+        next.next();
+        iter.next()
+    } {
+        let n = next.peek();
+
+        if v == ';' {
+            r.push(Command::new(&line[start_idx..i], state));
+            state = RunIf::Always;
+            start_idx = i + 1;
+        } else if v == '|' && n == Some(&'|') {
+            r.push(Command::new(&line[start_idx..i], state));
+            state = RunIf::ExitFailure;
+            start_idx = i + 2;
+            next.next();
+            iter.next();
+        } else if v == '&' && n == Some(&'&') {
+            r.push(Command::new(&line[start_idx..i], state));
+            state = RunIf::ExitSuccess;
+            start_idx = i + 2;
+            next.next();
+            iter.next();
+        } else if n == None {
+            r.push(Command::new(&line[start_idx..], state));
+        }
+    }
+
+    r
+}