forked from unknwon/gowalker
/
robot.go
59 lines (48 loc) · 1.46 KB
/
robot.go
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// Copyright 2013-2014 Unknown
//
// 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 routers
import (
"bytes"
"html/template"
"strings"
"github.com/Unknwon/gowalker/utils"
"github.com/astaxie/beego"
)
var robotTxt string
const robotTpl = `{{$disallow := .Disallow}}{{range .Uas}}User-agent: {{.}}
Disallow: {{$disallow}}
{{end}}User-agent: *
Disallow: /
`
// RobotRouter implemented global settings for all other routers.
type RobotRouter struct {
beego.Controller
}
// Get implemented Prepare method for RobotRouter.
func (this *RobotRouter) Get() {
if len(robotTxt) == 0 {
// Generate "robot.txt".
t := template.New("robotTpl")
t.Parse(robotTpl)
uas := strings.Split(utils.Cfg.MustValue("robot", "uas"), "|")
data := make(map[string]interface{})
data["Uas"] = uas
data["Disallow"] = utils.Cfg.MustValue("robot", "disallow")
buf := new(bytes.Buffer)
t.Execute(buf, data)
robotTxt = buf.String()
}
this.Ctx.WriteString(robotTxt)
return
}