A simple local file server written in Go

webview.go

// This code is hereby placed in the PUBLIC DOMAIN.
package main

import "fmt"
import "net/http"
import "os"

// A very simple go local file server.
//  1. Serves on port 8000
//  2. Serves files relative to the directory in which you run the server.
//
// Compile using "go build webview.go".
//
// This works better than python's SimpleHTTPServer because this go version
// can handle partial file requests, which are needed today for html5
// audio and video items.
func main() {
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		// Make path relative to current directory.
		path := "." + r.URL.Path

		// If the path refers to a directory and no '/' has been given,
		// then redirect to a path containing '/' so that the browser will
		// generate correct URL requests for relative paths in HTML files.
		dir, _ := os.Stat(path)
		if dir != nil {
			if dir.IsDir() && path[len(path)-1] != '/' {
				http.Redirect(w, r, r.URL.Path+"/", 301)
				return
			}
		}

		// Serve the path. Go's server automatically pulls index.html
		// files in directories.
		http.ServeFile(w, r, path)

		// Show the path being served on the console for diagnostic purposes.
		fmt.Println(path)
	})

	http.ListenAndServe(":8000", nil)
}