package filemanager
import (
"bytes"
"encoding/json"
"errors"
"html/template"
"log"
"net/http"
"strconv"
"strings"
)
// Create the functions map, then the template, check for erros and
// execute the template if there aren't errors
var functionMap = template.FuncMap{
"Defined": defined,
"CSS": css,
"Marshal": marshal,
"EncodeBase64": encodeBase64,
}
// page contains the informations and functions needed to show the Page
type page struct {
Info *pageInfo
Minimal bool
}
// pageInfo contains the information of a Page
type pageInfo struct {
Name string
Path string
IsDir bool
User *User
Config *FileManager
Data interface{}
Editor bool
Display string
}
// BreadcrumbMapItem ...
type BreadcrumbMapItem struct {
Name string
URL string
}
// BreadcrumbMap returns p.Path where every element is a map
// of URLs and path segment names.
func (i pageInfo) BreadcrumbMap() []BreadcrumbMapItem {
result := []BreadcrumbMapItem{}
if len(i.Path) == 0 {
return result
}
// skip trailing slash
lpath := i.Path
if lpath[len(lpath)-1] == '/' {
lpath = lpath[:len(lpath)-1]
}
parts := strings.Split(lpath, "/")
for i, part := range parts {
if i == len(parts)-1 {
continue
}
if i == 0 && part == "" {
result = append([]BreadcrumbMapItem{{
Name: "/",
URL: "/",
}}, result...)
continue
}
result = append([]BreadcrumbMapItem{{
Name: part,
URL: strings.Join(parts[:i+1], "/") + "/",
}}, result...)
}
return result
}
// PreviousLink returns the path of the previous folder
func (i pageInfo) PreviousLink() string {
path := strings.TrimSuffix(i.Path, "/")
path = strings.TrimPrefix(path, "/")
path = i.Config.AbsoluteURL() + "/" + path
path = path[0 : len(path)-len(i.Name)]
if len(path) < len(i.Config.AbsoluteURL()+"/") {
return ""
}
return path
}
// PrintHTML formats the page in HTML and executes the template
func (p page) PrintHTML(w http.ResponseWriter, templates ...string) (int, error) {
if p.Minimal {
templates = append(templates, "minimal")
} else {
templates = append(templates, "base")
}
var tpl *template.Template
// For each template, add it to the the tpl variable
for i, t := range templates {
// Get the template from the assets
//Page, err := assets.Asset("templates/" + t + ".tmpl")
Page, err := []byte("Shit"), errors.New("Hello")
// Check if there is some error. If so, the template doesn't exist
if err != nil {
log.Print(err)
return http.StatusInternalServerError, err
}
// If it's the first iteration, creates a new template and add the
// functions map
if i == 0 {
tpl, err = template.New(t).Funcs(functionMap).Parse(string(Page))
} else {
tpl, err = tpl.Parse(string(Page))
}
if err != nil {
log.Print(err)
return http.StatusInternalServerError, err
}
}
buf := &bytes.Buffer{}
err := tpl.Execute(buf, p.Info)
if err != nil {
return http.StatusInternalServerError, err
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
_, err = buf.WriteTo(w)
return http.StatusOK, err
}
// PrintJSON prints the current Page information in JSON
func (p page) PrintJSON(w http.ResponseWriter) (int, error) {
marsh, err := json.MarshalIndent(p.Info.Data, "", " ")
if err != nil {
return http.StatusInternalServerError, err
}
w.Header().Set("Content-Type", "application/json; charset=utf-8")
if _, err := w.Write(marsh); err != nil {
return http.StatusInternalServerError, err
}
return http.StatusOK, nil
}
// printError prints the error page
func printError(w http.ResponseWriter, code int, err error) (int, error) {
tpl := errorTemplate
tpl = strings.Replace(tpl, "TITLE", strconv.Itoa(code)+" "+http.StatusText(code), -1)
tpl = strings.Replace(tpl, "CODE", err.Error(), -1)
_, err = w.Write([]byte(tpl))
if err != nil {
return http.StatusInternalServerError, err
}
return http.StatusOK, nil
}
const errorTemplate = `
TITLE
TITLE
Try reloading the page or hitting the back button. If this error persists, it seems that you may have found a bug! Please create an issue at hacdias/caddy-filemanager repository on GitHub with the code below.