Move template functions outside engine (refactoring)

template/functions.go

@@ -0,0 +1,105 @@
+// Copyright 2018 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 (
+	"html/template"
+	"net/mail"
+	"strings"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/miniflux/miniflux/config"
+	"github.com/miniflux/miniflux/errors"
+	"github.com/miniflux/miniflux/filter"
+	"github.com/miniflux/miniflux/http/route"
+	"github.com/miniflux/miniflux/locale"
+	"github.com/miniflux/miniflux/url"
+)
+
+type funcMap struct {
+	cfg      *config.Config
+	router   *mux.Router
+	Language *locale.Language
+}
+
+func (f *funcMap) Map() template.FuncMap {
+	return template.FuncMap{
+		"baseURL": func() string {
+			return f.cfg.BaseURL()
+		},
+		"rootURL": func() string {
+			return f.cfg.RootURL()
+		},
+		"hasOAuth2Provider": func(provider string) bool {
+			return f.cfg.OAuth2Provider() == provider
+		},
+		"hasKey": func(dict map[string]string, key string) bool {
+			if value, found := dict[key]; found {
+				return value != ""
+			}
+			return false
+		},
+		"route": func(name string, args ...interface{}) string {
+			return route.Path(f.router, name, args...)
+		},
+		"noescape": func(str string) template.HTML {
+			return template.HTML(str)
+		},
+		"proxyFilter": func(data string) string {
+			return filter.ImageProxyFilter(f.router, data)
+		},
+		"proxyURL": func(link string) string {
+			if url.IsHTTPS(link) {
+				return link
+			}
+
+			return filter.Proxify(f.router, link)
+		},
+		"domain": func(websiteURL string) string {
+			return url.Domain(websiteURL)
+		},
+		"isEmail": func(str string) bool {
+			_, err := mail.ParseAddress(str)
+			if err != nil {
+				return false
+			}
+			return true
+		},
+		"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(timezone string, t time.Time) string {
+			return elapsedTime(f.Language, timezone, t)
+		},
+		"t": func(key interface{}, args ...interface{}) string {
+			switch key.(type) {
+			case string:
+				return f.Language.Get(key.(string), args...)
+			case errors.LocalizedError:
+				err := key.(errors.LocalizedError)
+				return err.Localize(f.Language)
+			case error:
+				return key.(error).Error()
+			default:
+				return ""
+			}
+		},
+		"plural": func(key string, n int, args ...interface{}) string {
+			return f.Language.Plural(key, n, args...)
+		},
+		"dict": dict,
+	}
+}
+
+func newFuncMap(cfg *config.Config, router *mux.Router, language *locale.Language) *funcMap {
+	return &funcMap{cfg, router, language}
+}