func Example() {
src := []byte(`
/* hello, world! */
var a = 3;
// b is a cool function
function b() {
return 7;
}`)
highlighted, err := syntaxhighlight.AsHTML(src)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println(string(highlighted))
// Output:
// <span class="com">/* hello, world! */</span>
// <span class="kwd">var</span> <span class="pln">a</span> <span class="pun">=</span> <span class="dec">3</span><span class="pun">;</span>
//
// <span class="com">// b is a cool function</span>
// <span class="kwd">function</span> <span class="pln">b</span><span class="pun">(</span><span class="pun">)</span> <span class="pun">{</span>
// <span class="kwd">return</span> <span class="dec">7</span><span class="pun">;</span>
// <span class="pun">}</span>
}
func main() {
flag.Parse()
log.SetFlags(0)
if flag.NArg() != 1 {
log.Fatal("Must specify exactly 1 filename argument.")
}
input, err := ioutil.ReadFile(flag.Arg(0))
if err != nil {
log.Fatal(err)
}
html, err := syntaxhighlight.AsHTML(input)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s", html)
}
func main() {
// create the storage directory
if err := os.MkdirAll(storage, 0755); err != nil {
log.Fatalf("creating storage directory %q failed: %v", storage, err)
}
// create mux server
mux := http.NewServeMux()
// static files
staticHandler := http.StripPrefix("/static/", http.FileServer(http.Dir("/src/static")))
mux.Handle("/static/", staticHandler)
// upload function
mux.HandleFunc("/paste", func(w http.ResponseWriter, r *http.Request) {
// make them auth
allowed := auth(r)
if !allowed {
w.Header().Set("WWW-Authenticate", `Basic realm="`+baseuri+`"`)
w.WriteHeader(401)
w.Write([]byte("401 Unauthorized\n"))
return
}
w.Header().Set("Content-Type", "application/json")
if r.Method != "POST" {
writeError(w, "not a valid endpoint")
return
}
content, err := ioutil.ReadAll(r.Body)
if err != nil {
writeError(w, fmt.Sprintf("reading from body failed: %v", err))
return
}
// create a unique id for the paste
id, err := uuid()
if err != nil {
writeError(w, fmt.Sprintf("uuid generation failed: %v", err))
return
}
// write to file
filepath := path.Join(storage, id)
if err = ioutil.WriteFile(filepath, content, 0755); err != nil {
writeError(w, fmt.Sprintf("writing file to %q failed: %v", filepath, err))
return
}
fmt.Fprint(w, JSONResponse{
"uri": baseuri + id,
})
log.Printf("paste posted successfully")
return
})
// index function
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/html")
if r.URL.Path == "/" {
// they want the root
// if probably me the admin
// but make them auth
allowed := auth(r)
if !allowed {
w.Header().Set("WWW-Authenticate", `Basic realm="`+baseuri+`"`)
w.WriteHeader(401)
w.Write([]byte("401 Unauthorized\n"))
return
}
var files string
err := filepath.Walk(storage, func(path string, f os.FileInfo, err error) error {
if filepath.Base(path) != storage {
files += fmt.Sprintf(`<tr>
<td><a href="%s%s">%s</a></td>
<td>%s</td>
<td>%d</td>
</tr>`, baseuri, filepath.Base(path), filepath.Base(path), f.ModTime().Format("2006-01-02T15:04:05Z07:00"), f.Size())
}
return nil
})
if err != nil {
writeError(w, fmt.Sprintf("walking %s failed: %v", storage, err))
}
fmt.Fprintf(w, "%s<table><thead><tr><th>name</th><th>modified</th><th>size</th></tr></thead><tbody>%s</tbody></table>%s", htmlBegin, files, htmlEnd)
log.Printf("index file rendered")
return
}
// check if a file exists for what they are asking
serveRaw := false
filename := strings.Trim(r.URL.Path, "/")
filename = path.Join(storage, filename)
// check if they want the raw file
if strings.HasSuffix(filename, "/raw") {
w.Header().Set("Content-Type", "text/plain")
filename = strings.TrimSuffix(filename, "/raw")
serveRaw = true
}
// check if file exists
if _, err := os.Stat(filename); os.IsNotExist(err) {
writeError(w, fmt.Sprintf("No such file or directory: %q", filename))
return
}
// read the file
src, err := ioutil.ReadFile(filename)
if err != nil {
writeError(w, fmt.Sprintf("Reading file %q failed: %v", filename, err))
return
}
if serveRaw {
// serve the file
w.Write(src)
log.Printf("raw paste served: %s", src)
return
}
// try to syntax highlight the file
highlighted, err := syntaxhighlight.AsHTML(src)
if err != nil {
writeError(w, fmt.Sprintf("Highlighting file %q failed: %v", filename, err))
return
}
fmt.Fprintf(w, "%s<pre><code>%s</code></pre>%s", htmlBegin, string(highlighted), htmlEnd)
log.Printf("highlighted paste served: %s", filename)
return
})
// set up the server
server := &http.Server{
Addr: ":" + port,
Handler: mux,
}
log.Printf("Starting server on port %q with baseuri %q", port, baseuri)
if certFile != "" && keyFile != "" {
log.Fatal(server.ListenAndServeTLS(certFile, keyFile))
} else {
log.Fatal(server.ListenAndServe())
}
}