Created
January 13, 2018 13:15
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| package main | |
| import ( | |
| "html/template" | |
| "log" | |
| "net/http" | |
| "os" | |
| "path/filepath" | |
| ) | |
| const tpl = ` | |
| <html> | |
| <head> | |
| <title> file server </title> | |
| </head> | |
| <body> | |
| <ul> | |
| {{range .}} | |
| <li> <a href="{{ . }}"> {{ . }} </a> </li> | |
| {{end}} | |
| </ul> | |
| </body> | |
| </html> | |
| ` | |
| func main() { | |
| sm := http.NewServeMux() | |
| t, err := template.New("root").Parse(tpl) | |
| if err != nil { | |
| log.Fatal(err) | |
| } | |
| err = filepath.Walk(".", func(p string, fi os.FileInfo, err error) error { | |
| pattern := "/" | |
| if p != "." { | |
| pattern = pattern + p | |
| } | |
| if fi.IsDir() { | |
| file, err := os.Open(p) | |
| if err != nil { | |
| return err | |
| } | |
| defer file.Close() | |
| names, err := file.Readdirnames(-1) | |
| if err != nil { | |
| return err | |
| } | |
| var hasIndex bool | |
| files := make([]string, len(names)) | |
| for i, n := range names { | |
| if n == "index.html" { | |
| hasIndex = true | |
| } | |
| if p != "." { | |
| files[i] = p + "/" + n | |
| } else { | |
| files[i] = n | |
| } | |
| } | |
| if hasIndex { | |
| sm.HandleFunc(pattern, func(res http.ResponseWriter, req *http.Request) { | |
| http.ServeFile(res, req, p) | |
| }) | |
| } else { | |
| sm.HandleFunc(pattern, func(res http.ResponseWriter, req *http.Request) { | |
| err = t.Execute(res, files) | |
| if err != nil { | |
| log.Fatal(err) | |
| } | |
| }) | |
| } | |
| } else { | |
| sm.HandleFunc(pattern, func(res http.ResponseWriter, req *http.Request) { | |
| http.ServeFile(res, req, p) | |
| }) | |
| } | |
| return nil | |
| }) | |
| if err != nil { | |
| log.Fatal(err) | |
| } | |
| http.ListenAndServe(":9000", sm) | |
| } |
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