From 7dde122d9b291d790f23c1bb3b64c5db0d7b07e3 Mon Sep 17 00:00:00 2001
From: mappu <mappu04@gmail.com>
Date: Sat, 25 Mar 2017 15:55:48 +1300
Subject: [PATCH] webcmd: MaxHistoryLines

---
 Task.go                | 3 +++
 cmd/webcmd/webcmd.conf | 2 ++
 config.go              | 7 ++++---
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/Task.go b/Task.go
index 30786cc..4adddab 100644
--- a/Task.go
+++ b/Task.go
@@ -85,6 +85,9 @@ func (this *App) LaunchTask(params []string) (taskRef string, err error) {
 
 		task := this.tasks[ref]
 		task.output = append(task.output, OutputLine{isError: isError, text: text})
+		if len(task.output) > 2*this.cfg.MaxHistoryLines {
+			task.output = task.output[this.cfg.MaxHistoryLines:]
+		}
 		this.tasks[ref] = task
 	}
 
diff --git a/cmd/webcmd/webcmd.conf b/cmd/webcmd/webcmd.conf
index 7a6927a..a6459f2 100644
--- a/cmd/webcmd/webcmd.conf
+++ b/cmd/webcmd/webcmd.conf
@@ -3,6 +3,8 @@
 	
 	"ListenAddress": ":8192",
 	
+	"MaxHistoryLines": 100,
+	
 	"Commands": [
 		
 		{
diff --git a/config.go b/config.go
index 85cbf8a..14fd4a2 100644
--- a/config.go
+++ b/config.go
@@ -27,7 +27,8 @@ type CommandConfig struct {
 }
 
 type AppConfig struct {
-	ListenAddress string
-	AppTitle      string
-	Commands      []CommandConfig
+	ListenAddress   string
+	AppTitle        string
+	MaxHistoryLines int // default zero: unlimited history for each command
+	Commands        []CommandConfig
 }