webcmd: MaxHistoryLines

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
 	}
 

cmd/webcmd/webcmd.conf

@@ -3,6 +3,8 @@
 	
 	"ListenAddress": ":8192",
 	
+	"MaxHistoryLines": 100,
+	
 	"Commands": [
 		
 		{

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
 }