start refactoring

vendor/github.com/fatedier/beego/logs/console.go

@@ -0,0 +1,101 @@
+// Copyright 2014 beego Author. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package logs
+
+import (
+	"encoding/json"
+	"os"
+	"runtime"
+	"time"
+)
+
+// brush is a color join function
+type brush func(string) string
+
+// newBrush return a fix color Brush
+func newBrush(color string) brush {
+	pre := "\033["
+	reset := "\033[0m"
+	return func(text string) string {
+		return pre + color + "m" + text + reset
+	}
+}
+
+var colors = []brush{
+	newBrush("1;37"), // Emergency          white
+	newBrush("1;36"), // Alert              cyan
+	newBrush("1;35"), // Critical           magenta
+	newBrush("1;31"), // Error              red
+	newBrush("1;33"), // Warning            yellow
+	newBrush("1;32"), // Notice             green
+	newBrush("1;34"), // Informational      blue
+	newBrush("1;34"), // Debug              blue
+}
+
+// consoleWriter implements LoggerInterface and writes messages to terminal.
+type consoleWriter struct {
+	lg       *logWriter
+	Level    int  `json:"level"`
+	Colorful bool `json:"color"` //this filed is useful only when system's terminal supports color
+}
+
+// NewConsole create ConsoleWriter returning as LoggerInterface.
+func NewConsole() Logger {
+	cw := &consoleWriter{
+		lg:       newLogWriter(os.Stdout),
+		Level:    LevelDebug,
+		Colorful: runtime.GOOS != "windows",
+	}
+	return cw
+}
+
+// Init init console logger.
+// jsonConfig like '{"level":LevelTrace}'.
+func (c *consoleWriter) Init(jsonConfig string) error {
+	if len(jsonConfig) == 0 {
+		return nil
+	}
+	err := json.Unmarshal([]byte(jsonConfig), c)
+	if runtime.GOOS == "windows" {
+		c.Colorful = false
+	}
+	return err
+}
+
+// WriteMsg write message in console.
+func (c *consoleWriter) WriteMsg(when time.Time, msg string, level int) error {
+	if level > c.Level {
+		return nil
+	}
+	if c.Colorful {
+		msg = colors[level](msg)
+	}
+	c.lg.println(when, msg)
+	return nil
+}
+
+// Destroy implementing method. empty.
+func (c *consoleWriter) Destroy() {
+
+}
+
+// Flush implementing method. empty.
+func (c *consoleWriter) Flush() {
+
+}
+
+func init() {
+	Register(AdapterConsole, NewConsole)
+}