From 21d533c7cf09f1650eaa0db75185cc7513644397 Mon Sep 17 00:00:00 2001
From: Eugene Pankov <john.pankov@gmail.com>
Date: Sat, 22 Dec 2018 01:36:05 +0100
Subject: [PATCH] attempt to detect CWD on classic windows shells

---
 .../src/services/sessions.service.ts           | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/terminus-terminal/src/services/sessions.service.ts b/terminus-terminal/src/services/sessions.service.ts
index fb6a0458..72d5eb69 100644
--- a/terminus-terminal/src/services/sessions.service.ts
+++ b/terminus-terminal/src/services/sessions.service.ts
@@ -25,6 +25,8 @@ export interface IChildProcess {
     command: string
 }
 
+const windowsDirectoryRegex = /([a-zA-Z]:[^\:\[\]\?\"\<\>\|]+)/mi // tslint:disable-line
+
 export abstract class BaseSession {
     open: boolean
     name: string
@@ -75,6 +77,7 @@ export abstract class BaseSession {
 export class Session extends BaseSession {
     private pty: any
     private pauseAfterExit = false
+    private guessedCWD: string
 
     constructor (private config: ConfigService) {
         super()
@@ -110,6 +113,8 @@ export class Session extends BaseSession {
             experimentalUseConpty: this.config.store.terminal.useConPTY,
         })
 
+        this.guessedCWD = options.cwd || process.env.HOME
+
         this.truePID = (this.pty as any).pid
 
         setTimeout(async () => {
@@ -125,6 +130,9 @@ export class Session extends BaseSession {
 
         this.pty.on('data-buffered', data => {
             this.emitOutput(data)
+            if (process.platform === 'win32') {
+                this.guessWindowsCWD(data)
+            }
         })
 
         this.pty.on('exit', () => {
@@ -243,8 +251,18 @@ export class Session extends BaseSession {
         if (process.platform === 'linux') {
             return fs.readlink(`/proc/${this.truePID}/cwd`)
         }
+        if (process.platform === 'win32') {
+            return this.guessedCWD
+        }
         return null
     }
+
+    private guessWindowsCWD (data: string) {
+        let match = windowsDirectoryRegex.exec(data)
+        if (match) {
+            this.guessedCWD = match[0]
+        }
+    }
 }
 
 @Injectable({ providedIn: 'root' })