Move xorm logger bridge from log to models so that log module could be a standalone package (#6944)

* move xorm logger bridge from log to models so that log module could be a standalone package

* fix tests

* save logger on xorm log bridge

models/log.go

@@ -0,0 +1,106 @@
+// Copyright 2017 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package models
+
+import (
+	"fmt"
+
+	"code.gitea.io/gitea/modules/log"
+
+	"github.com/go-xorm/core"
+)
+
+// XORMLogBridge a logger bridge from Logger to xorm
+type XORMLogBridge struct {
+	showSQL bool
+	level   core.LogLevel
+	logger  *log.Logger
+}
+
+// NewXORMLogger inits a log bridge for xorm
+func NewXORMLogger(showSQL bool) core.ILogger {
+	return &XORMLogBridge{
+		showSQL: showSQL,
+		logger:  log.GetLogger("xorm"),
+	}
+}
+
+// Log a message with defined skip and at logging level
+func (l *XORMLogBridge) Log(skip int, level log.Level, format string, v ...interface{}) error {
+	return l.logger.Log(skip+1, level, format, v...)
+}
+
+// Debug show debug log
+func (l *XORMLogBridge) Debug(v ...interface{}) {
+	l.Log(2, log.DEBUG, fmt.Sprint(v...))
+}
+
+// Debugf show debug log
+func (l *XORMLogBridge) Debugf(format string, v ...interface{}) {
+	l.Log(2, log.DEBUG, format, v...)
+}
+
+// Error show error log
+func (l *XORMLogBridge) Error(v ...interface{}) {
+	l.Log(2, log.ERROR, fmt.Sprint(v...))
+}
+
+// Errorf show error log
+func (l *XORMLogBridge) Errorf(format string, v ...interface{}) {
+	l.Log(2, log.ERROR, format, v...)
+}
+
+// Info show information level log
+func (l *XORMLogBridge) Info(v ...interface{}) {
+	l.Log(2, log.INFO, fmt.Sprint(v...))
+}
+
+// Infof show information level log
+func (l *XORMLogBridge) Infof(format string, v ...interface{}) {
+	l.Log(2, log.INFO, format, v...)
+}
+
+// Warn show warning log
+func (l *XORMLogBridge) Warn(v ...interface{}) {
+	l.Log(2, log.WARN, fmt.Sprint(v...))
+}
+
+// Warnf show warnning log
+func (l *XORMLogBridge) Warnf(format string, v ...interface{}) {
+	l.Log(2, log.WARN, format, v...)
+}
+
+// Level get logger level
+func (l *XORMLogBridge) Level() core.LogLevel {
+	switch l.logger.GetLevel() {
+	case log.TRACE, log.DEBUG:
+		return core.LOG_DEBUG
+	case log.INFO:
+		return core.LOG_INFO
+	case log.WARN:
+		return core.LOG_WARNING
+	case log.ERROR, log.CRITICAL:
+		return core.LOG_ERR
+	}
+	return core.LOG_OFF
+}
+
+// SetLevel set the logger level
+func (l *XORMLogBridge) SetLevel(lvl core.LogLevel) {
+}
+
+// ShowSQL set if record SQL
+func (l *XORMLogBridge) ShowSQL(show ...bool) {
+	if len(show) > 0 {
+		l.showSQL = show[0]
+	} else {
+		l.showSQL = true
+	}
+}
+
+// IsShowSQL if record SQL
+func (l *XORMLogBridge) IsShowSQL() bool {
+	return l.showSQL
+}