From 0c507cd5ede97f385bcc5bdb0a52c145abe60d89 Mon Sep 17 00:00:00 2001
From: Henrik Hautakoski <henrik@eossweden.org>
Date: Fri, 7 Feb 2020 08:17:19 +0100
Subject: [PATCH] Add log module

---
 log/log.go | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 log/log.go

diff --git a/log/log.go b/log/log.go
new file mode 100644
index 0000000..66ea0c9
--- /dev/null
+++ b/log/log.go
@@ -0,0 +1,49 @@
+
+package log
+
+import "fmt"
+
+// Colors
+// ---------------------------------------------------------
+const (
+	InfoColor    = "\033[1;34m%s\033[0m"
+	NoticeColor  = "\033[1;36m%s\033[0m"
+	WarningColor = "\033[1;33m%s\033[0m"
+	ErrorColor   = "\033[1;31m%s\033[0m"
+)
+
+// Define LogFunc prototype
+//  Function that takes a format string and variadic number
+//  of arguments (like printf)
+// ---------------------------------------------------------
+type LogFunc func(format string, args ...interface{})
+
+// Create a log function.
+//  This is the base logging function. by providing a prefix
+//  a new log function of LogFunc type will be created
+//  appending "[ <prefix> ]" before the message.
+// ---------------------------------------------------------
+func logfn(prefix string) LogFunc {
+	return func(format string, args ...interface{}) {
+		format = "[" + prefix + "] " + format + "\n"
+		fmt.Printf(format, args...)
+	}
+}
+
+// Declare our different log functions.
+// ---------------------------------------------------------
+var Info LogFunc
+var Notice LogFunc
+var Warning LogFunc
+var Error LogFunc
+
+// Initilize log module
+// ---------------------------------------------------------
+func init() {
+
+	// Initilize functions.
+	Info 	= logfn(fmt.Sprintf(InfoColor, "INFO"))
+	Notice 	= logfn(fmt.Sprintf(NoticeColor, "NOTICE"))
+	Warning = logfn(fmt.Sprintf(WarningColor, "WARN"))
+	Error 	= logfn(fmt.Sprintf(ErrorColor, "ERROR"))
+}