From acb84171e55d46dc1a5b9cc10b2bff53c2d2846b Mon Sep 17 00:00:00 2001
From: "Andrew Gallant (Ocelot)" <Andrew.Gallant@tufts.edu>
Date: Wed, 16 May 2012 23:57:26 -0400
Subject: Add new logger type so that it can be shut off.

---
 nexgb/log.go | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 nexgb/log.go

(limited to 'nexgb/log.go')

diff --git a/nexgb/log.go b/nexgb/log.go
new file mode 100644
index 0000000..eaaa57e
--- /dev/null
+++ b/nexgb/log.go
@@ -0,0 +1,85 @@
+package xgb
+
+import (
+	"log"
+	"os"
+)
+
+// Log controls whether XGB emits errors to stderr. By default, it is enabled.
+var PrintLog = true
+
+// log is a wrapper around a log.PrintLogger so we can control whether it should
+// output anything.
+type xgblog struct {
+	*log.Logger
+}
+
+func newLogger() xgblog {
+	return xgblog{log.New(os.Stderr, "XGB: ", log.Lshortfile)}
+}
+
+func (lg xgblog) Print(v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Print(v...)
+	}
+}
+
+func (lg xgblog) Printf(format string, v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Printf(format, v...)
+	}
+}
+
+func (lg xgblog) Println(v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Println(v...)
+	}
+}
+
+func (lg xgblog) Fatal(v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Fatal(v...)
+	} else {
+		os.Exit(1)
+	}
+}
+
+func (lg xgblog) Fatalf(format string, v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Fatalf(format, v...)
+	} else {
+		os.Exit(1)
+	}
+}
+
+func (lg xgblog) Fatalln(v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Fatalln(v...)
+	} else {
+		os.Exit(1)
+	}
+}
+
+func (lg xgblog) Panic(v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Panic(v...)
+	} else {
+		panic("")
+	}
+}
+
+func (lg xgblog) Panicf(format string, v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Panicf(format, v...)
+	} else {
+		panic("")
+	}
+}
+
+func (lg xgblog) Panicln(v ...interface{}) {
+	if PrintLog {
+		lg.Logger.Panicln(v...)
+	} else {
+		panic("")
+	}
+}
-- 
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