Golang Templates

package main

import (
    "bufio"
    "log"
    "net/http"
    "os"
    "strings"
    "text/template"
)

func main() {
    templates := populateTemplates()

    http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
        requestedFile := req.URL.Path[1:]
        template := templates.Lookup(requestedFile + ".html")

        if template != nil {
            template.Execute(w, nil)
        } else {
            w.WriteHeader(404)
        }
    })

    http.HandleFunc("/img/", serveResource)
    http.HandleFunc("/css/", serveResource)

    http.ListenAndServe(":8080", nil)
}

func serveResource(w http.ResponseWriter, req *http.Request) {
    path := "../../public" + req.URL.Path
    var contentType string
    if strings.HasSuffix(path, ".css") {
        contentType = "text/css"
    } else if strings.HasSuffix(path, ".png") {
        contentType = "image/png"
    } else {
        contentType = "text/plain"
    }

    f, err := os.Open(path)
    if err != nil {
        w.WriteHeader(404)
    } else {
        defer f.Close()
        w.Header().Add("Content Type", contentType)

        br := bufio.NewReader(f)
        br.WriteTo(w)
    }
}

func populateTemplates() *template.Template {
    result := template.New("templates")

    basePath := "../../templates"
    templateFolder, err := os.Open(basePath)
    if err != nil {
        log.Fatal(err)
    }
    defer templateFolder.Close()

    templatePathsRaw, _ := templateFolder.Readdir(-1)

    templatePaths := new([]string)
    for _, pathInfo := range templatePathsRaw {
        if !pathInfo.IsDir() {
            *templatePaths = append(*templatePaths, basePath+"/"+pathInfo.Name())
        }
    }

    result.ParseFiles(*templatePaths...)

    return result
}