Initial commit
This commit is contained in:
Sasha Koshka
95
examples/board/main.go
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95
examples/board/main.go
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package main
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import "log"
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import "sync"
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import "path"
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import "net/http"
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import "crypto/tls"
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import "html/template"
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import "hnakra/service"
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type Post struct {
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Author, Content string
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Next *Post
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}
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type Board struct {
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root string
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mount *service.HTTP
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mux *http.ServeMux
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template *template.Template
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postsMutex sync.RWMutex
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posts *Post
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}
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func main () {
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board := Board { root: "/board/" }
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board.mux = http.NewServeMux()
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board.mount = &service.HTTP {
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Mount: service.Mount {
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Path: board.root,
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Name: "Board",
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Description: "A board where you can post things.",
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TLSConfig: &tls.Config { InsecureSkipVerify: true },
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},
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Handler: board.mux,
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}
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handle := func (pattern string, handler func (http.ResponseWriter, *http.Request)) {
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board.mux.HandleFunc(pattern, handler)
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}
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handle(board.root, board.serveHome)
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handle(path.Join(board.root, "actionPost"), board.serveActionPost)
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board.template = template.Must(template.New("board").Parse(tem))
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err := board.mount.Run()
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if err != nil {
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log.Println("XXX", err)
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}
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}
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func (board *Board) getPosts (max int) []*Post {
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board.postsMutex.RLock()
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defer board.postsMutex.RUnlock()
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posts := make([]*Post, max)
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count := 0
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current := board.posts
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for current != nil && count < max {
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posts[count] = current
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count ++
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current = current.Next
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}
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return posts[:count]
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}
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func (board *Board) serveHome (res http.ResponseWriter, req *http.Request) {
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if req.URL.Path != board.root {
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http.NotFoundHandler().ServeHTTP(res, req)
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return
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}
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res.Header().Add("content-type", "text/html")
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res.WriteHeader(http.StatusOK)
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board.template.ExecuteTemplate(res, "pageHome", board.getPosts(16))
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}
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func (board *Board) serveActionPost (res http.ResponseWriter, req *http.Request) {
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if req.Method != "POST" {
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res.Header().Add("content-type", "text/plain")
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res.WriteHeader(http.StatusMethodNotAllowed)
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res.Write([]byte("Method not allowed"))
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return
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}
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defer http.Redirect(res, req, board.root, http.StatusSeeOther)
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req.ParseForm()
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author := req.PostFormValue("author")
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content := req.PostFormValue("content")
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board.posts = &Post {
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Author: author,
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Content: content,
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Next: board.posts,
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}
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}
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150
examples/board/template.go
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150
examples/board/template.go
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@@ -0,0 +1,150 @@
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package main
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const tem = `
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{{define "top"}}
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<!DOCTYPE html>
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<html>
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<head>
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<title>{{.}}</title>
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<style>
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* {
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appearance: none;
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--webkit-appearance: none;
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font-family: monospace;
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box-sizing: border-box;
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color: inherit;
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font-size: 12pt;
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}
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body {
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background-color: #b3b5b1;
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color: #272825;
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margin: 1em;
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}
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body > * {
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margin: auto;
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max-width: 40em;
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padding: 1em;
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}
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header {
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background-color: #a2a89d;
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border: 1px solid #8f938c;
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border-bottom-color: #7f847b;
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border-radius: 4px 4px 0 0;
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text-shadow: 1px 1px 1px #b8bfb0;
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color: #4c4f49;
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}
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main {
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background-color: #abaea8;
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border: 1px solid #959b91;
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border-top-color: #a1a59e;
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border-radius: 0 0 4px 4px;
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}
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h1 { font-size: 1.5em }
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hr {
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margin: 1em 0;
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border: none;
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border-top: 1px solid #7f847b9e;
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border-bottom: 1px solid #56604f1c;
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}
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.formRow {
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margin: 1em 0;
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}
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button, input, textarea {
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margin: 0;
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border: 1px solid #7f847b;
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background-color: #b3b5b1;
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padding: 0.25em 0.5em;
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box-shadow: 1px 1px 0 inset #56604f38;
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border-radius: 2px;
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font-weight: normal;
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}
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textarea {
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height: 4em;
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}
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button:not(:active), input[type=submit]:not(:active) {
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box-shadow: -1px -1px 0 inset #56604f38;
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}
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button:active, input[type=submit]:active {
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border-color: #757a71;
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padding-top: calc(0.25em + 1px);
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padding-right: calc(0.5em - 1px);
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padding-bottom: calc(0.25em - 1px);
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padding-left: calc(0.5em + 1px);
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}
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.post {
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padding: 0.4em 0.5em;
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background-color: #a2a69f;
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border-radius: 2px;
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border: 1px solid #8f938c;
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margin: 1em 0;
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}
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.post .author {
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font-size: 0.7em;
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color: #5e625a;
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text-shadow: 1px 1px 0 #b3b5b1;
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margin-bottom: 0.3em;
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}
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*:last-child { margin-bottom: 0 }
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*:first-child { margin-top: 0 }
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</style>
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</head>
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<body>
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<header>
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<h1>{{.}}</h1>
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</header>
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<main>
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{{end}}
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{{define "bottom"}}</main></body></html>{{end}}
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{{define "post"}}
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<div class=post>
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<div class=author>{{.Author}}</div>
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<div class=content>{{.Content}}</div>
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</div>
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{{end}}
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{{define "postForm"}}
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<form method=POST action=actionPost>
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<div class=formRow>
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<input type=text name=author id=author placeholder="Name" required>
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</div>
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<div class=formRow>
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<textarea name=content id=content placeholder="Post content" required></textarea>
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</div>
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<div class=formRow>
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<input type=submit value="Post">
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</div>
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</form>
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{{end}}
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{{define "pageGeneric"}}
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{{template "top" .Title}}
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<p>{{.Content}}</p>
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{{template "bottom"}}
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{{end}}
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{{define "pageHome"}}
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{{template "top" "Home"}}
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{{template "postForm"}}
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<hr>
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{{range .}}
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{{template "post" .}}
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{{end}}
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{{template "bottom"}}
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{{end}}
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`
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