GoLang: I've created a new 'brush' for SyntaxHighlighter

I created a SyntaxHighlighter file for Go. (To set up SyntaxHighlighter, refer to this.)

This example is from the Go website.

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

/*
   Write and http server to present pages in the file system, but
   transformed somehow. Substitutable? With Fibonacci program?
*/
package main

import (
 "bytes"
 "expvar"
 "flag"
 "fmt"
 "http"
 "io"
 "log"
 "os"
 "strconv"
)


// hello world, the web server
var helloRequests = expvar.NewInt("hello-requests")

func HelloServer(w http.ResponseWriter, req *http.Request) {
 helloRequests.Add(1)
 io.WriteString(w, "hello, world!\n")
}

// Simple counter server. POSTing to it will set the value.
type Counter struct {
 n int
}

// This makes Counter satisfy the expvar.Var interface, so we can export
// it directly.
func (ctr *Counter) String() string { return fmt.Sprintf("%d", ctr.n) }

func (ctr *Counter) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 switch req.Method {
 case "GET":
  ctr.n++
 case "POST":
  buf := new(bytes.Buffer)
  io.Copy(buf, req.Body)
  body := buf.String()
  if n, err := strconv.Atoi(body); err != nil {
   fmt.Fprintf(w, "bad POST: %v\nbody: [%v]\n", err, body)
  } else {
   ctr.n = n
   fmt.Fprint(w, "counter reset\n")
  }
 }
 fmt.Fprintf(w, "counter = %d\n", ctr.n)
}

// simple flag server
var booleanflag = flag.Bool("boolean", true, "another flag for testing")

func FlagServer(w http.ResponseWriter, req *http.Request) {
 w.Header().Set("Content-Type", "text/plain; charset=utf-8")
 fmt.Fprint(w, "Flags:\n")
 flag.VisitAll(func(f *flag.Flag) {
  if f.Value.String() != f.DefValue {
   fmt.Fprintf(w, "%s = %s [default = %s]\n", f.Name, f.Value.String(), f.DefValue)
  } else {
   fmt.Fprintf(w, "%s = %s\n", f.Name, f.Value.String())
  }
 })
}

// simple argument server
func ArgServer(w http.ResponseWriter, req *http.Request) {
 for _, s := range os.Args {
  fmt.Fprint(w, s, " ")
 }
}

// a channel (just for the fun of it)
type Chan chan int

func ChanCreate() Chan {
 c := make(Chan)
 go func(c Chan) {
  for x := 0; ; x++ {
   c <- x
  }
 }(c)
 return c
}

func (ch Chan) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 io.WriteString(w, fmt.Sprintf("channel send #%d\n", <-ch))
}

// exec a program, redirecting output
func DateServer(rw http.ResponseWriter, req *http.Request) {
 rw.Header().Set("Content-Type", "text/plain; charset=utf-8")
 r, w, err := os.Pipe()
 if err != nil {
  fmt.Fprintf(rw, "pipe: %s\n", err)
  return
 }

 p, err := os.StartProcess("/bin/date", []string{"date"}, &os.ProcAttr{Files: []*os.File{nil, w, w}})
 defer r.Close()
 w.Close()
 if err != nil {
  fmt.Fprintf(rw, "fork/exec: %s\n", err)
  return
 }
 defer p.Release()
 io.Copy(rw, r)
 wait, err := p.Wait(0)
 if err != nil {
  fmt.Fprintf(rw, "wait: %s\n", err)
  return
 }
 if !wait.Exited() || wait.ExitStatus() != 0 {
  fmt.Fprintf(rw, "date: %v\n", wait)
  return
 }
}

func Logger(w http.ResponseWriter, req *http.Request) {
 log.Print(req.URL.Raw)
 w.WriteHeader(404)
 w.Write([]byte("oops"))
}


var webroot = flag.String("root", "/home/rsc", "web root directory")

func main() {
 flag.Parse()

 // The counter is published as a variable directly.
 ctr := new(Counter)
 http.Handle("/counter", ctr)
 expvar.Publish("counter", ctr)

 http.Handle("/", http.HandlerFunc(Logger))
 http.Handle("/go/", http.StripPrefix("/go/", http.FileServer(http.Dir(*webroot))))
 http.Handle("/flags", http.HandlerFunc(FlagServer))
 http.Handle("/args", http.HandlerFunc(ArgServer))
 http.Handle("/go/hello", http.HandlerFunc(HelloServer))
 http.Handle("/chan", ChanCreate())
 http.Handle("/date", http.HandlerFunc(DateServer))
 err := http.ListenAndServe(":12345", nil)
 if err != nil {
  log.Panicln("ListenAndServe:", err)
 }
}