initial

trade/print.go

@@ -0,0 +1,59 @@
+package trade
+
+import (
+	"log"
+	"strings"
+)
+
+var (
+	last_debug string
+	last_info  string
+	last_warn  string
+	last_error string
+)
+
+func Debug(msg ...string) string {
+	info := strings.Join(msg, " ")
+	if last_debug == info {
+		return ""
+	}
+	log.Println("[DEBUG]", info)
+	last_debug = info
+	return info
+}
+
+func Info(msg ...string) {
+	i := strings.Join(msg, " ")
+	if last_info == i {
+		return
+	}
+	log.Println("[INFO]", i)
+	last_info = i
+}
+
+func Error(code string, msg ...string) {
+	info := strings.Join(msg, " ")
+	if last_error == info {
+		return
+	}
+	log.Println("[ERROR] #", code, info)
+	last_error = info
+}
+
+func Watch(msg ...string) {
+	info := strings.Join(msg, " ")
+	if last_warn == info {
+		return
+	}
+	log.Println("[Watch] #", info)
+	last_warn = info
+}
+
+func Warn(msg ...string) {
+	info := strings.Join(msg, " ")
+	if last_warn == info {
+		return
+	}
+	log.Println("[WARN] #", info)
+	last_warn = info
+}