Prompt: adds interactive prompt (that does nothing right now)

prompt/prompt.go

@@ -0,0 +1,63 @@
+package prompt
+
+import (
+    "io"
+
+    "github.com/rs/zerolog/log"
+    "github.com/chzyer/readline"
+)
+
+type Prompt struct {
+    rl *readline.Instance 
+}
+
+func NewPrompt() *Prompt {
+    rl, err := readline.NewEx(&readline.Config{
+		Prompt:          "\033[31m»\033[0m ",
+		HistoryFile:     "/tmp/readline.tmp",
+		InterruptPrompt: "^C",
+		EOFPrompt:       "exit",
+
+		HistorySearchFold:   true,
+	})
+
+	if err != nil {
+		panic(err)
+	}
+
+    return &Prompt{
+        rl: rl,
+    }
+}
+
+func (p *Prompt) StartInteractive() error {
+    for {
+		line, err := p.rl.Readline()
+        if err == readline.ErrInterrupt {
+            if len(line) == 0 {
+                break
+            } else {
+                continue
+            }
+        } else if err == io.EOF {
+            break
+        }
+
+        switch {
+        case line == "exit":
+            return nil
+        default:
+            log.Info().Msgf("Line: %s", line)
+        }
+    }
+
+    return nil
+}
+
+func (p *Prompt) CleanAndRefreshForLogging() {
+    p.rl.Clean()
+    
+    // xxx: Lazy hack to make sure this runs _after_ the log is written. 
+    go p.rl.Refresh()
+}
+