First commit

server/template/template.go

@@ -0,0 +1,117 @@
+// Copyright 2017 Frédéric Guillot. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package template
+
+import (
+	"bytes"
+	"github.com/miniflux/miniflux2/errors"
+	"github.com/miniflux/miniflux2/locale"
+	"github.com/miniflux/miniflux2/server/route"
+	"github.com/miniflux/miniflux2/server/template/helper"
+	"github.com/miniflux/miniflux2/server/ui/filter"
+	"html/template"
+	"io"
+	"log"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/gorilla/mux"
+)
+
+type TemplateEngine struct {
+	templates     map[string]*template.Template
+	router        *mux.Router
+	translator    *locale.Translator
+	currentLocale *locale.Language
+}
+
+func (t *TemplateEngine) ParseAll() {
+	funcMap := template.FuncMap{
+		"route": func(name string, args ...interface{}) string {
+			return route.GetRoute(t.router, name, args...)
+		},
+		"noescape": func(str string) template.HTML {
+			return template.HTML(str)
+		},
+		"proxyFilter": func(data string) string {
+			return filter.ImageProxyFilter(t.router, data)
+		},
+		"domain": func(websiteURL string) string {
+			parsedURL, err := url.Parse(websiteURL)
+			if err != nil {
+				return websiteURL
+			}
+
+			return parsedURL.Host
+		},
+		"hasPrefix": func(str, prefix string) bool {
+			return strings.HasPrefix(str, prefix)
+		},
+		"contains": func(str, substr string) bool {
+			return strings.Contains(str, substr)
+		},
+		"isodate": func(ts time.Time) string {
+			return ts.Format("2006-01-02 15:04:05")
+		},
+		"elapsed": func(ts time.Time) string {
+			return helper.GetElapsedTime(t.currentLocale, ts)
+		},
+		"t": func(key interface{}, args ...interface{}) string {
+			switch key.(type) {
+			case string, error:
+				return t.currentLocale.Get(key.(string), args...)
+			case errors.LocalizedError:
+				err := key.(errors.LocalizedError)
+				return err.Localize(t.currentLocale)
+			default:
+				return ""
+			}
+		},
+		"plural": func(key string, n int, args ...interface{}) string {
+			return t.currentLocale.Plural(key, n, args...)
+		},
+	}
+
+	commonTemplates := ""
+	for _, content := range templateCommonMap {
+		commonTemplates += content
+	}
+
+	for name, content := range templateViewsMap {
+		log.Println("Parsing template:", name)
+		t.templates[name] = template.Must(template.New("main").Funcs(funcMap).Parse(commonTemplates + content))
+	}
+}
+
+func (t *TemplateEngine) SetLanguage(language string) {
+	t.currentLocale = t.translator.GetLanguage(language)
+}
+
+func (t *TemplateEngine) Execute(w io.Writer, name string, data interface{}) {
+	tpl, ok := t.templates[name]
+	if !ok {
+		log.Fatalf("The template %s does not exists.\n", name)
+	}
+
+	var b bytes.Buffer
+	err := tpl.ExecuteTemplate(&b, "base", data)
+	if err != nil {
+		log.Fatalf("Unable to render template: %v\n", err)
+	}
+
+	b.WriteTo(w)
+}
+
+func NewTemplateEngine(router *mux.Router, translator *locale.Translator) *TemplateEngine {
+	tpl := &TemplateEngine{
+		templates:  make(map[string]*template.Template),
+		router:     router,
+		translator: translator,
+	}
+
+	tpl.ParseAll()
+	return tpl
+}