From d58000c7ac201d9277c23126920e6f27af5fd5a4 Mon Sep 17 00:00:00 2001
From: Aqua-sama <aqua@iserlohn-fortress.net>
Date: Sun, 18 Oct 2020 17:59:08 +0300
Subject: Split input line on ':'

---
 Makefile              | 24 ++++++++++++++++++++++--
 src/main.rs           | 12 +++++-------
 src/parser.rs         | 35 +++++++++++++++++++++++++++++++++--
 src/parser/command.rs | 28 ++++++++++------------------
 src/prompt.rs         |  3 ++-
 5 files changed, 72 insertions(+), 30 deletions(-)

diff --git a/Makefile b/Makefile
index ec06e96..47220d7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,26 @@
 PREFIX ?= /usr/local
-MAN_PREFIX ?= ${PREFIX}/man
+BIN_DEST ?= ${PREFIX}/bin
+MAN_DEST ?= ${PREFIX}/man
 
+CARGO ?= cargo
+SCDOC ?= scdoc
+RM ?= rm
+
+default:
+	@${CARGO} build
+release:
+	@${CARGO} build --release --locked --all-features --target-dir=target
 manpage:
-	scdoc < man/rs.1.scd > man/rs.1
+	@${SCDOC} < man/rs.1.scd > man/rs.1
+install: release manpage
+	install -Dm 755 -t "${BIN_DEST}" target/release/rs
+	install -Dm 555 -t "${MAN_DEST}" man/rs.1
+
+run:
+	@${CARGO} run
+fmt:
+	@${CARGO} fmt
+clean:
+	@${RM} man/rs.1
+	@${CARGO} clean
 
diff --git a/src/main.rs b/src/main.rs
index cb67e45..efd32c2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -11,7 +11,6 @@ fn main() {
     }
 
     let prompt = prompt::Prompt::new().unwrap();
-    let mut cwd = std::env::current_dir().unwrap();
     let mut status = None;
 
     // `()` can be used when no completer is required
@@ -22,15 +21,14 @@ fn main() {
     }*/
 
     'repl: loop {
-        match rl.readline(&prompt.print(&cwd)) {
+        match rl.readline(&prompt.print()) {
             Ok(line) => {
                 rl.add_history_entry(line.as_str());
 
-                let i = parser::tokenize(&line);
-                match i.run(&prompt.home, &mut cwd, &status) {
-                    Ok(parser::command::RunResult::Command(s)) => status = Some(s),
-                    Ok(parser::command::RunResult::Builtin) => {}
-                    Err(e) => eprintln!("{}", e),
+                let cmd = parser::CommandLine::new(&line);
+                match cmd.run(&prompt.home, status) {
+                    Ok(s) => status = s,
+                    Err(e) => eprintln!("{}", e)
                 }
             }
             Err(ReadlineError::Interrupted) => {
diff --git a/src/parser.rs b/src/parser.rs
index af4aed4..a96b679 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -1,14 +1,45 @@
+use std::io::Error;
+use std::path::PathBuf;
+use std::process::ExitStatus;
+
 // >    overwrite
 // >>   append
 // |    pipe
 
+// :    on prev cmd any
 // &&   on prev cmd okay
 // ||   on prev cmd fail
 
-pub mod command;
-
+mod command;
 use command::*;
 
+pub struct CommandLine(Vec<CommandInfo>);
+
+impl CommandLine {
+    pub fn new(line: &str) -> Self {
+        let split = line.split(':');
+        let mut v = CommandLine(Vec::new());
+        for x in split {
+            v.0.push(tokenize(x));
+        }
+        v
+    }
+
+    pub fn run(
+        &self,
+        home: &PathBuf,
+        mut status: Option<ExitStatus>,
+    ) -> Result<Option<ExitStatus>, Error> {
+        for cmd in &self.0 {
+            match cmd.run(&home, &status)? {
+                RunResult::Command(s) => status = Some(s),
+                RunResult::Builtin => {}
+            }
+        }
+        Ok(status)
+    }
+}
+
 enum TokenType {
     Argument,
     StdoutFileOverwrite,
diff --git a/src/parser/command.rs b/src/parser/command.rs
index 52b4666..5d129c3 100644
--- a/src/parser/command.rs
+++ b/src/parser/command.rs
@@ -3,14 +3,14 @@ use std::path::{Path, PathBuf};
 use std::process::{Command, ExitStatus};
 
 #[derive(Debug)]
-pub enum Redirect {
+pub(in crate::parser) enum Redirect {
     Std,
     FileOverwrite(String),
     FileAppend(String),
 }
 
 #[derive(Debug, PartialEq)]
-pub enum RunOn {
+pub(in crate::parser) enum RunOn {
     Always,
     ExitSuccess,
     ExitFailure,
@@ -23,13 +23,13 @@ pub enum RunResult {
 
 #[derive(Debug)]
 pub struct CommandInfo {
-    pub args: Vec<String>,
-    pub stdout: Redirect,
-    pub when: RunOn,
+    pub(in crate::parser) args: Vec<String>,
+    pub(in crate::parser) stdout: Redirect,
+    pub(in crate::parser) when: RunOn,
 }
 
 impl CommandInfo {
-    pub fn new() -> CommandInfo {
+    pub(in crate::parser) fn new() -> CommandInfo {
         CommandInfo {
             args: Vec::new(),
             stdout: Redirect::Std,
@@ -37,18 +37,13 @@ impl CommandInfo {
         }
     }
 
-    pub fn run(
-        &self,
-        home: &PathBuf,
-        cwd: &mut PathBuf,
-        status: &Option<ExitStatus>,
-    ) -> Result<RunResult, Error> {
+    pub fn run(&self, home: &PathBuf, status: &Option<ExitStatus>) -> Result<RunResult, Error> {
         match self.args[0].as_str() {
             "!" => {
                 println!("{:?}", status);
                 Ok(RunResult::Builtin)
             }
-            "cd" => cd(&self.args[1..], home, cwd),
+            "cd" => cd(&self.args[1..], home),
             "exit" => {
                 std::process::exit(0);
             }
@@ -62,7 +57,7 @@ impl CommandInfo {
     }
 }
 
-fn cd(args: &[String], home: &PathBuf, cwd: &mut PathBuf) -> Result<RunResult, Error> {
+fn cd(args: &[String], home: &PathBuf) -> Result<RunResult, Error> {
     if args.len() > 1 {
         return Err(Error::new(
             ErrorKind::InvalidInput,
@@ -77,10 +72,7 @@ fn cd(args: &[String], home: &PathBuf, cwd: &mut PathBuf) -> Result<RunResult, E
     };
 
     match std::env::set_current_dir(&root) {
-        Ok(_) => {
-            *cwd = root;
-            Ok(RunResult::Builtin)
-        }
+        Ok(_) => Ok(RunResult::Builtin),
         Err(e) => Err(e),
     }
 }
diff --git a/src/prompt.rs b/src/prompt.rs
index e70c958..12df7e0 100644
--- a/src/prompt.rs
+++ b/src/prompt.rs
@@ -27,7 +27,8 @@ impl Prompt {
         Ok(Prompt { ps1, home })
     }
 
-    pub fn print(&self, pwd: &std::path::PathBuf) -> std::string::String {
+    pub fn print(&self) -> std::string::String {
+        let pwd = std::env::current_dir().unwrap();
         let path = if pwd.starts_with(&self.home) {
             "~".to_owned() + &pwd.strip_prefix(&self.home).unwrap().display().to_string()
         } else {
-- 
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