commit a0d5b83a8008c4fec292fbacde61240141554fc3
Author: Casey Rodarmor <casey@rodarmor.com>
Date:   Thu Jun 16 17:13:43 2016 -0700

    Initial commit. Broken.

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..eb5a316
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..e55cae7
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,4 @@
+[root]
+name = "j"
+version = "0.1.0"
+
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..e59217b
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "j"
+version = "0.1.0"
+authors = ["Casey Rodarmor <casey@rodarmor.com>"]
+
+[dependencies]
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..e13aeaf
--- /dev/null
+++ b/justfile
@@ -0,0 +1,2 @@
+default:
+	cargo run hello -- -- bar a b c
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..a158939
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,84 @@
+use std::io::prelude::*;
+
+fn can(command: &str) -> bool {
+  if let Ok(paths) = std::env::var("PATH") {
+    for path in paths.split(":") {
+      let candidate = format!("{}/{}", path, command);
+      if isfile(&candidate) {
+        return true;
+      }
+    }
+  }
+  false
+}
+
+fn isfile(path: &str) -> bool {
+  if let Ok(metadata) = std::fs::metadata(path) {
+    metadata.is_file()
+  } else {
+    false
+  }
+}
+
+fn cwd() -> String {
+  match std::env::current_dir() {
+    Ok(pathbuf) => pathbuf.to_str().unwrap_or_else(|| panic!("cwd: cwd was not a valid utf8 string")).to_string(),
+    Err(err) => panic!("cwd: {}", err),
+  }
+}
+
+fn cd(path: &str) {
+  if let Err(err) = std::env::set_current_dir(path) {
+    panic!("cd: {}", err)
+  }
+}
+
+fn say(s: &str) {
+  println!("{}", s)
+}
+
+fn warn(s: &str) {
+  if let Err(err) = std::io::stderr().write(s.as_bytes()) {
+    panic!("warn: could not write to stderr: {}", err);
+  }
+  if let Err(err) = std::io::stderr().write("\n".as_bytes()) {
+    panic!("warn: could not write to stderr: {}", err);
+  }
+}
+
+fn die(s: &str) {
+  warn(s);
+  std::process::exit(-1);
+}
+
+fn main() {
+  let can_make = can("make");
+  let can_gmake = can("gmake");
+  if !(can_make || can_gmake) {
+    die("cannot find \"make\" or \"gmake\" in $PATH");
+  }
+
+  println!("can make: {}", can_make);
+  println!("can gmake: {}", can_gmake);
+
+  loop {
+    if isfile("justfile") {
+      break;
+    }
+    if cwd() == "/" {
+      die("No justfile found.")
+    }
+    cd("..");
+  }
+
+  
+  let recipes: Vec<String> = std::env::args().skip(1).take_while(|arg| arg != "--").collect();
+  let arguments: Vec<String> = std::env::args().skip(1 + recipes.len() + 1).collect();
+
+  print!("{:?}", recipes);
+  print!("{:?}", arguments);
+
+  // export as $ARG0 -> ARGX
+  // start at 0 or 1?
+  // exec $MAKE MAKEFLAGS='' --always-make --no-print-directory -f justfile ${RECIPES[*]}
+}