Mango Go Report Card Code coverage Docs License

Serves markdown content as webpage.

Content structure

You can see content structure example in test-files/.
Or find runnable example in folder example/.


.mango - config file

Domain: https://example.loc
ContentPath: content/
PublicPath: public/

PageURL: /{Lang}/{Slug}.html
FileURL: /{File}


Check out example/README

Example (simple)

First install with go get
and use in code as import ""

One-liner if you need basic webpage functionality.

package main

import ""

func main() {

Example (advanced)

Before starting webserver add custom stuff if you need advanced configuration.

package main

import ""

func main() {
    srv := mango.NewServer(3000)

	// Add some middlewares ("File", "Page")
    // srv.Middlewares["Page"] = mwForPage  // assign one mw
    // srv.Middlewares["File"] = mwForFile  // assign one mw
	srv.Middlewares["Page"] = func(next http.Handler) http.Handler {
		return mwFirst(mwSecond(next))

	// Custom functions for templates
	srv.FuncMap = template.FuncMap{
		"Smile": func() string {
			return ":)"
		"Add": func(a,b int) string {
			return a + b

    // Custom route
	srv.Router.HandleFunc("/{Lang}/search/{sterm}", func(w http.ResponseWriter, r *http.Request) {
		runSearch(srv, w, r) // create your handler

    // Print all pages and info about them

    // Go!
	log.Println("Start listening on", ":"+srv.Port)
	panic( srv.Start() )

func mwFirst(next http.Handler) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// do stuff
		next.ServeHTTP(w, r)
func mwSecond(next http.Handler) http.Handler { ... }
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func FileToParams

func FileToParams(fpath string) map[string]string

    FileToParams - Read file contents and convert to map of params We do not check for error because we only want to get/or not file Importance order: 1. Content params 2. Filename params 3. (same depth) .defaults 4 -n. (up n depth) .subdefaults 5. .mango config file params

    func T

    func T(page *Page, s string) string

      T - Translate string to given language

      func ToASCII

      func ToASCII(str string) string

        ToASCII - UTF to Ascii characters

        func ToTime

        func ToTime(s string) (time.Time, error)

          ToTime - datetime string to time type Parse any custom string 2006-01-02 15:04:05 01 - month 02 - day


          type Application

          type Application struct {
          	// Absoluted domain path with scheme
          	// https://example.loc
          	Domain string
          	// Absolute path to content (folders with .md files)
          	ContentPath string
          	// Absolute path to web accessible files
          	PublicPath string
          	// Page tree
          	Pages PageList
          	// URLTemplates - url templates for pages
          	URLTemplates map[string]string
          	// Link to server
          	Server *Server
          	// Run this func on content reload
          	OnReload func(app *Application)
          	// contains filtered or unexported fields

            Application - mango application

            func NewApplication

            func NewApplication() (*Application, error)

              NewApplication - create/init new application Must be executed only one time

              func (*Application) BinPath

              func (app *Application) BinPath() string

                BinPath - get bin path

                func (*Application) Collection

                func (app *Application) Collection(ckey string) *Collection

                  Collection - get collection by ckey

                  func (*Application) CollectionCount

                  func (app *Application) CollectionCount() int

                    CollectionCount - total count of collections

                    func (*Application) CollectionPages

                    func (app *Application) CollectionPages(ckey, csubkey string) PageList

                      CollectionPages - shorthand to get collection subitems Avoiding errors. Without it need to use: app.Collection(ckey).Get(csubkey) But there could be no ckey collection and that results in go-lang error

                      func (*Application) FileToPage

                      func (app *Application) FileToPage(fpath string) *Page

                        FileToPage for application

                        func (*Application) IsValidLang

                        func (app *Application) IsValidLang(lang string) bool

                          IsValidLang - is given language is valid in App scope

                          func (*Application) LoadContent

                          func (app *Application) LoadContent()

                            LoadContent - Load files to application Can be executed more than once times (on .reload file creation)

                            func (*Application) NewPage

                            func (app *Application) NewPage(lang, label string) *Page

                              NewPage already linked to app

                              func (*Application) Page

                              func (app *Application) Page(slug string) *Page

                                Page - get one page by given slug. Slug must be equal and is case-sensitive

                                func (*Application) PageCount

                                func (app *Application) PageCount() int

                                  PageCount - total count of pages

                                  func (*Application) Print

                                  func (app *Application) Print()

                                    Print - output app highlights

                                    func (*Application) Search

                                    func (app *Application) Search(pageSlug, sterm string) PageList

                                      Search pages from given top page

                                      type Collection

                                      type Collection struct {
                                      	// contains filtered or unexported fields

                                        Collection is map of *Page

                                        func NewCollection

                                        func NewCollection() *Collection

                                          NewCollection - create and init as empty

                                          func (*Collection) Append

                                          func (c *Collection) Append(key string, page *Page)

                                            Append new page to PageList under key

                                            func (*Collection) Get

                                            func (c *Collection) Get(key string) PageList

                                              Get from local map by key

                                              func (*Collection) Len

                                              func (c *Collection) Len() int

                                                Len is part of sort.Interface.

                                                func (*Collection) MakeEmpty

                                                func (c *Collection) MakeEmpty()

                                                  MakeEmpty - init or clear map

                                                  func (*Collection) Print

                                                  func (c *Collection) Print(label string)

                                                    Print collection items

                                                    func (*Collection) Remove

                                                    func (c *Collection) Remove(key string)

                                                      Remove by key

                                                      type Page

                                                      type Page struct {
                                                      	// Link to application
                                                      	App *Application
                                                      	// Parent page
                                                      	Parent *Page
                                                      	// Sub-pages for this page
                                                      	Pages PageList
                                                      	// contains filtered or unexported fields

                                                        Page - page with content and params + sub-pages

                                                        func (*Page) AbsoluteURL

                                                        func (page *Page) AbsoluteURL() string

                                                          AbsoluteURL - page URL prefixed with domain

                                                          func (*Page) AppendContent

                                                          func (page *Page) AppendContent(content []byte)

                                                            AppendContent - append to content

                                                            func (*Page) BlankParams

                                                            func (page *Page) BlankParams()

                                                              BlankParams - init/clear all params Or could be used to init page params map

                                                              func (*Page) Content

                                                              func (page *Page) Content() []byte

                                                                Content - get content for page

                                                                func (*Page) Get

                                                                func (page *Page) Get(key string) string

                                                                  Get - get thread-safely param to Page.Params

                                                                  func (*Page) IsDir

                                                                  func (page *Page) IsDir() bool

                                                                    IsDir - shorthand to find out is this val set and not empty "IsDir"

                                                                    func (*Page) IsEqual

                                                                    func (page *Page) IsEqual(key, val string) bool

                                                                      IsEqual - shorthand to compare param with custom string

                                                                      func (*Page) IsNegation

                                                                      func (page *Page) IsNegation(key string) bool

                                                                        IsNegation - Similar to IsNo, bu check for more negation forms Negation values are: No Not None N/A 0 -1 "" (empty, not set)

                                                                        func (*Page) IsNo

                                                                        func (page *Page) IsNo(key string) bool

                                                                          IsNo - shorthand to compare param with "No"

                                                                          func (*Page) IsSet

                                                                          func (page *Page) IsSet(key string) bool

                                                                            IsSet - shorthand to find out is this val set and not empty ""

                                                                            func (*Page) IsYes

                                                                            func (page *Page) IsYes(key string) bool

                                                                              IsYes - shorthand to compare param with "Yes"

                                                                              func (*Page) MergeParams

                                                                              func (page *Page) MergeParams(moreParams map[string]string)

                                                                                MergeParams - merge some more params

                                                                                func (*Page) ModTime

                                                                                func (page *Page) ModTime() time.Time

                                                                                  ModTime - Get mod time for page from params not reading actual file from filesystem

                                                                                  func (*Page) Paging

                                                                                  func (page *Page) Paging(pNum, pSize, pLimit int)

                                                                                    Paging - slice page.Pages with paging logic and add params from paging to page params

                                                                                    func (*Page) Params

                                                                                    func (page *Page) Params() map[string]string

                                                                                      Params - return map safaly

                                                                                      func (*Page) ParamsLen

                                                                                      func (page *Page) ParamsLen() int

                                                                                        ParamsLen - how many params page have

                                                                                        func (*Page) PopulateParams

                                                                                        func (page *Page) PopulateParams(s string) string

                                                                                          PopulateParams - replace given string with templated params Use figure brackets "{}" as param placeholders /{Slug}.html with be replaced with actual page slug

                                                                                          func (*Page) Print

                                                                                          func (page *Page) Print()

                                                                                            Print pages in list

                                                                                            func (*Page) PrintRow

                                                                                            func (page *Page) PrintRow()

                                                                                              PrintRow - print page as one row

                                                                                              func (*Page) PrintTree

                                                                                              func (page *Page) PrintTree(depth int)

                                                                                                PrintTree - Print all pages under this page

                                                                                                func (*Page) ReloadContent

                                                                                                func (page *Page) ReloadContent() bool

                                                                                                  ReloadContent file Content (only) TODO: reload params too? changing Slug is dangerous

                                                                                                  func (*Page) RemoveParam

                                                                                                  func (page *Page) RemoveParam(key string)

                                                                                                    RemoveParam - remove param by given key

                                                                                                    func (*Page) Search

                                                                                                    func (page *Page) Search(sterm string) PageList

                                                                                                      Search - find all pages by given search term TODO: make correct search by params and content

                                                                                                      func (*Page) SearchByParam

                                                                                                      func (page *Page) SearchByParam(key, val string) PageList

                                                                                                        SearchByParam - find all pages that search value is equal to page param

                                                                                                        func (*Page) Set

                                                                                                        func (page *Page) Set(key, val string)

                                                                                                          Set - set thread-safely param to Page.Params

                                                                                                          func (*Page) SetContent

                                                                                                          func (page *Page) SetContent(content []byte)

                                                                                                            SetContent set content for page

                                                                                                            func (*Page) SetLang

                                                                                                            func (page *Page) SetLang(lang string) string

                                                                                                              SetLang - try to set page language If given lang is not valid, use default lang from App

                                                                                                              func (*Page) SetValue

                                                                                                              func (page *Page) SetValue(key string, val interface{})

                                                                                                                SetValue - set any type value Interface variable will cast to string

                                                                                                                func (*Page) Split

                                                                                                                func (page *Page) Split(key, sep string) []string

                                                                                                                  Split - get param as slice splitted by given separator

                                                                                                                  func (*Page) Walk

                                                                                                                  func (page *Page) Walk(fnCheck func(p *Page) bool) PageList

                                                                                                                    Walk all down by sub-pages and do custom stuff Can be customized by custom func TODO: goroutines?

                                                                                                                    func (*Page) WalkTop

                                                                                                                    func (page *Page) WalkTop(fn func(parent *Page))

                                                                                                                      WalkTop - from current page to all parents on top

                                                                                                                      type PageList

                                                                                                                      type PageList []*Page

                                                                                                                        PageList is slice as []*Page

                                                                                                                        func (PageList) Len

                                                                                                                        func (pages PageList) Len() int

                                                                                                                          Len is part of sort.Interface.

                                                                                                                          func (PageList) Less

                                                                                                                          func (pages PageList) Less(i, j int) bool

                                                                                                                            Less is part of sort.Interface. We use count as the value to sort by

                                                                                                                            func (PageList) Paging

                                                                                                                            func (pages PageList) Paging(pNum, pSize, pLimit int) (PageList, map[string]int)

                                                                                                                              Paging - Make paging params Returns necessary params for paging

                                                                                                                              func (PageList) Print

                                                                                                                              func (pages PageList) Print()

                                                                                                                                Print pages in list

                                                                                                                                func (PageList) Randomize

                                                                                                                                func (pages PageList) Randomize()

                                                                                                                                  Randomize slice Randomizes param SortNr for all pages and sorts

                                                                                                                                  func (PageList) Sort

                                                                                                                                  func (pages PageList) Sort(sortType string)

                                                                                                                                    Sort list by given sortType

                                                                                                                                    func (PageList) Swap

                                                                                                                                    func (pages PageList) Swap(i, j int)

                                                                                                                                      Swap is part of sort.Interface.

                                                                                                                                      type PageMap

                                                                                                                                      type PageMap struct {
                                                                                                                                      	// contains filtered or unexported fields

                                                                                                                                        PageMap is map of *Page

                                                                                                                                        func NewPageMap

                                                                                                                                        func NewPageMap() *PageMap

                                                                                                                                          NewPageMap - create and init as empty

                                                                                                                                          func (*PageMap) Add

                                                                                                                                          func (pm *PageMap) Add(key string, page *Page)

                                                                                                                                            Add new *Page to local map Can't use only Slug, because PageMap can be used for many purposes

                                                                                                                                            func (*PageMap) Filter

                                                                                                                                            func (pm *PageMap) Filter(fnCheck func(p *Page) bool) PageList

                                                                                                                                              Filter - filter by custom func

                                                                                                                                              func (*PageMap) Get

                                                                                                                                              func (pm *PageMap) Get(key string) *Page

                                                                                                                                                Get from local map by key

                                                                                                                                                func (*PageMap) Len

                                                                                                                                                func (pm *PageMap) Len() int

                                                                                                                                                  Len - map item count

                                                                                                                                                  func (*PageMap) MakeEmpty

                                                                                                                                                  func (pm *PageMap) MakeEmpty()

                                                                                                                                                    MakeEmpty - init or clear map

                                                                                                                                                    func (*PageMap) Print

                                                                                                                                                    func (pm *PageMap) Print()

                                                                                                                                                      Print pages in list

                                                                                                                                                      func (*PageMap) Remove

                                                                                                                                                      func (pm *PageMap) Remove(key string)

                                                                                                                                                        Remove by key

                                                                                                                                                        type Server

                                                                                                                                                        type Server struct {
                                                                                                                                                        	Host      string
                                                                                                                                                        	Port      string
                                                                                                                                                        	App       *Application
                                                                                                                                                        	Templates *template.Template
                                                                                                                                                        	Router    *mux.Router
                                                                                                                                                        	FuncMap   template.FuncMap // user can define its
                                                                                                                                                        	/* Middlewares:
                                                                                                                                                        	To add multiple middlewares on one map key:
                                                                                                                                                        	srv.Middlewares["File"] = func(next http.Handler) http.Handler {
                                                                                                                                                        		return mwFirst(mwSecond(next))
                                                                                                                                                        	Middlewares map[string]func(next http.Handler) http.Handler

                                                                                                                                                          Server - mango server for serving content from mango-structure data

                                                                                                                                                          func NewServer

                                                                                                                                                          func NewServer(port int) *Server

                                                                                                                                                            NewServer - create server instance

                                                                                                                                                            func (*Server) Render

                                                                                                                                                            func (srv *Server) Render(w io.Writer, page *Page, templateID string)

                                                                                                                                                              Render only layout But give param for page to distinct template

                                                                                                                                                              func (*Server) Run404

                                                                                                                                                              func (srv *Server) Run404(w http.ResponseWriter, r *http.Request)

                                                                                                                                                                Run404 - handler 404

                                                                                                                                                                func (*Server) RunIndex

                                                                                                                                                                func (srv *Server) RunIndex(w http.ResponseWriter, r *http.Request)

                                                                                                                                                                  RunIndex - handler for first page

                                                                                                                                                                  func (*Server) RunOne

                                                                                                                                                                  func (srv *Server) RunOne(w http.ResponseWriter, r *http.Request)

                                                                                                                                                                    RunOne - handler for specific one (*Page)

                                                                                                                                                                    func (*Server) Start

                                                                                                                                                                    func (srv *Server) Start() error

                                                                                                                                                                      Start listening to port (default) Can't be tested because using httptest package (it have his own listener)


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