Tab titles now show cwd (vercel#2907)

lib/reducers/sessions.js

@@ -14,6 +14,8 @@ import {
   SESSION_SET_CWD
 } from '../constants/sessions';
 
+import getCWD from '../utils/fs';
+
 const initialState = Immutable({
   sessions: {},
   activeUid: null
@@ -82,7 +84,7 @@ const reducer = (state = initialState, action) => {
           {deep: true}
         );
       }
-      return state;
+      return state.setIn(['sessions', action.uid, 'title'], getCWD(state.sessions[action.uid].pid, action));
 
     case SESSION_PTY_EXIT:
       if (state.sessions[action.uid]) {

lib/utils/fs.js

@@ -0,0 +1,27 @@
+/*
+FS Utility functions go here.
+------
+getCWD kindly taken from henrikdahl's plugin hyper statusline
+
+https://github.com/henrikdahl/hyper-statusline/blob/master/index.js
+*/
+
+import {execSync} from 'child_process';
+
+export default function getCWD(pid, action) {
+  let cwd;
+  if (process.platform == 'win32') {
+    let directoryRegex = /([a-zA-Z]+)/im;
+    if (action && action.data) {
+      let path = directoryRegex.exec(action.data);
+      if (path) cwd = path[0];
+    }
+  } else {
+    cwd = execSync(`lsof -p ${pid} | awk '$4=="cwd"' | tr -s ' ' | cut -d ' ' -f9-`, {encoding: 'utf8'});
+    cwd = `/${cwd
+      .split('/')
+      .pop()
+      .trim()}`;
+  }
+  return cwd;
+}