1 files changed, 2 insertions, 104 deletions
diff --git a/src/main.rs b/src/main.rs
index e94ce0c..9d8ed49 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,18 +2,10 @@
 use crate::result::Result;
 use crate::terminal::{Input, Terminal};
 
-use std::collections::HashMap;
-use std::collections::HashSet;
-use std::env;
-use std::os::unix::fs::PermissionsExt;
-use std::process::{self, Command};
+use std::process;
 use tokio::io::{self, AsyncWriteExt};
 
-#[macro_use] extern crate lalrpop_util;
-
-lalrpop_mod!(pub commandline);
 pub mod error;
-pub mod path;
 pub mod result;
 pub mod terminal;
 
@@ -67,101 +59,7 @@ async fn prompt() -> Result<()> {
 }
 
 
-async fn execute(input: &str) -> Result<()> {
-  let invocation = commandline::InvocationParser::new().parse(input)?;
-
-  match invocation.as_slice() {
-    ["environment", ..] => {
-      let environment = read_environment()?;
-      println!("{:?}", environment);
-    }
-    ["which", command_name, ..] => {
-      match find_executable_path(command_name)? {
-        Some(executable_path) => {
-          println!("{}", executable_path);
-        }
-        None => {
-          println!("Command not found: {}", command_name);
-        }
-      };
-    },
-    [command_name, ..] => {
-      match find_executable_path(command_name)? {
-        Some(executable_path) => {
-          let mut command = Command::new(executable_path.to_sys_path());
-
-          let arguments = &invocation[1..];
-          command.args(arguments);
-
-          let _status = command.status()?;
-        }
-        None => {
-          println!("Command not found: {}", command_name);
-        }
-      };
-    },
-    _ => {
-      println!("invocation '{:?}'", invocation);
-    }
-  }
-
+async fn execute(_input: &str) -> Result<()> {
   Ok(())
 }
 
-
-fn read_environment() -> Result<HashMap<String,String>> {
-  Ok(env::vars().collect())
-}
-
-
-fn get_environment(variable_name: &str) -> Result<Option<String>> {
-  Ok(env::vars()
-     .find(|(key, _)| key == variable_name)
-     .map(|(_, value)| value))
-}
-
-
-fn get_search_paths() -> Result<Vec<path::AbsoluteDirectoryPath>> {
-  let paths = get_environment("PATH")?.unwrap_or_default();
-  let paths = path::parse_path_list(&paths)?;
-
-  let mut result = Vec::new();
-  let mut seen = HashSet::new();
-  for path in paths {
-    if seen.contains(&path) {
-      continue;
-    }
-
-    seen.insert(path.clone());
-    result.push(path);
-  }
-
-  Ok(result)
-}
-
-
-fn find_executable_path(command_name: &str)
-  -> Result<Option<path::AbsoluteFilePath>>
-{
-  let file_name: path::FileName = command_name.parse()?;
-  let search_paths = get_search_paths()?;
-
-  let mut executable_path: Option<path::AbsoluteFilePath> = None;
-  for search_path in &search_paths {
-    let candidate_path = search_path.concat_file_name(&file_name);
-    match candidate_path.to_sys_path().metadata() {
-      Ok(metadata) => {
-        if metadata.is_file()
-          && metadata.permissions().mode() & 0o111 != 0
-        {
-          executable_path = Some(candidate_path);
-          break;
-        }
-      },
-      Err(_) => { },
-    }
-  }
-
-  Ok(executable_path)
-}
-