This is how you do it

Since the -prefix option of go-bindata seems to be broken I'm forced to
rewrite the paths of the templates with sed.

.gitignore

@@ -29,6 +29,7 @@ _testmain.go
 coverage.out
 
 /modules/public/bindata.go
+/modules/templates/bindata.go
 
 *.db
 *.log

cmd/web.go

@@ -7,7 +7,6 @@ package cmd
 import (
 	"crypto/tls"
 	"fmt"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/fcgi"
@@ -15,7 +14,6 @@ import (
 	"path"
 	"strings"
 
-	"code.gitea.io/git"
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/auth"
 	"code.gitea.io/gitea/modules/bindata"
@@ -23,7 +21,7 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/public"
 	"code.gitea.io/gitea/modules/setting"
-	"code.gitea.io/gitea/modules/template"
+	"code.gitea.io/gitea/modules/templates"
 	"code.gitea.io/gitea/routers"
 	"code.gitea.io/gitea/routers/admin"
 	apiv1 "code.gitea.io/gitea/routers/api/v1"
@@ -39,10 +37,7 @@ import (
 	"github.com/go-macaron/i18n"
 	"github.com/go-macaron/session"
 	"github.com/go-macaron/toolbox"
-	"github.com/go-xorm/xorm"
-	version "github.com/mcuadros/go-version"
 	"github.com/urfave/cli"
-	ini "gopkg.in/ini.v1"
 	macaron "gopkg.in/macaron.v1"
 )
 
@@ -74,45 +69,6 @@ type VerChecker struct {
 	Expected   string
 }
 
-// checkVersion checks if binary matches the version of templates files.
-func checkVersion() {
-	// Templates.
-	data, err := ioutil.ReadFile(setting.StaticRootPath + "/templates/.VERSION")
-	if err != nil {
-		log.Fatal(4, "Fail to read 'templates/.VERSION': %v", err)
-	}
-	tplVer := string(data)
-	if tplVer != setting.AppVer {
-		if version.Compare(tplVer, setting.AppVer, ">") {
-			log.Fatal(4, "Binary version is lower than template file version, did you forget to recompile Gogs?")
-		} else {
-			log.Fatal(4, "Binary version is higher than template file version, did you forget to update template files?")
-		}
-	}
-
-	// Check dependency version.
-	checkers := []VerChecker{
-		{"github.com/go-xorm/xorm", func() string { return xorm.Version }, "0.5.5"},
-		{"github.com/go-macaron/binding", binding.Version, "0.3.2"},
-		{"github.com/go-macaron/cache", cache.Version, "0.1.2"},
-		{"github.com/go-macaron/csrf", csrf.Version, "0.1.0"},
-		{"github.com/go-macaron/i18n", i18n.Version, "0.3.0"},
-		{"github.com/go-macaron/session", session.Version, "0.1.6"},
-		{"github.com/go-macaron/toolbox", toolbox.Version, "0.1.0"},
-		{"gopkg.in/ini.v1", ini.Version, "1.8.4"},
-		{"gopkg.in/macaron.v1", macaron.Version, "1.1.7"},
-		{"code.gitea.io/git", git.Version, "0.4.1"},
-	}
-	for _, c := range checkers {
-		if !version.Compare(c.Version(), c.Expected, ">=") {
-			log.Fatal(4, `Dependency outdated!
-Package '%s' current version (%s) is below requirement (%s),
-please use following command to update this package and recompile Gogs:
-go get -u %[1]s`, c.ImportPath, c.Version(), c.Expected)
-		}
-	}
-}
-
 // newMacaron initializes Macaron instance.
 func newMacaron() *macaron.Macaron {
 	m := macaron.New()
@@ -139,16 +95,17 @@ func newMacaron() *macaron.Macaron {
 			SkipLogging: setting.DisableRouterLog,
 		},
 	))
+	m.Use(templates.Renderer(
+		&templates.Options{
+			Directory: path.Join(setting.StaticRootPath, "templates"),
+			Custom:    []string{path.Join(setting.CustomPath, "templates")},
+		},
+	))
 
-	funcMap := template.NewFuncMap()
-	m.Use(macaron.Renderer(macaron.RenderOptions{
-		Directory:         path.Join(setting.StaticRootPath, "templates"),
-		AppendDirectories: []string{path.Join(setting.CustomPath, "templates")},
-		Funcs:             funcMap,
-		IndentJSON:        macaron.Env != macaron.PROD,
+	models.InitMailRender(templates.Mailer(&templates.Options{
+		Directory: path.Join(setting.StaticRootPath, "templates", "mail"),
+		Custom:    []string{path.Join(setting.CustomPath, "templates", "mail")},
 	}))
-	models.InitMailRender(path.Join(setting.StaticRootPath, "templates/mail"),
-		path.Join(setting.CustomPath, "templates/mail"), funcMap)
 
 	localeNames, err := bindata.AssetDir("conf/locale")
 	if err != nil {
@@ -200,7 +157,6 @@ func runWeb(ctx *cli.Context) error {
 		setting.CustomConf = ctx.String("config")
 	}
 	routers.GlobalInit()
-	checkVersion()
 
 	m := newMacaron()
 

models/mail.go

@@ -5,18 +5,18 @@
 package models
 
 import (
+	"bytes"
 	"fmt"
 	"html/template"
 	"path"
 
-	"gopkg.in/gomail.v2"
-	"gopkg.in/macaron.v1"
-
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/mailer"
 	"code.gitea.io/gitea/modules/markdown"
 	"code.gitea.io/gitea/modules/setting"
+	"gopkg.in/gomail.v2"
+	"gopkg.in/macaron.v1"
 )
 
 const (
@@ -31,27 +31,11 @@ const (
 	mailNotifyCollaborator base.TplName = "notify/collaborator"
 )
 
-type mailRenderInterface interface {
-	HTMLString(string, interface{}, ...macaron.HTMLOptions) (string, error)
-}
-
-var mailRender mailRenderInterface
+var templates *template.Template
 
 // InitMailRender initializes the macaron mail renderer
-func InitMailRender(dir, appendDir string, funcMap []template.FuncMap) {
-	opt := &macaron.RenderOptions{
-		Directory:         dir,
-		AppendDirectories: []string{appendDir},
-		Funcs:             funcMap,
-		Extensions:        []string{".tmpl", ".html"},
-	}
-	ts := macaron.NewTemplateSet()
-	ts.Set(macaron.DEFAULT_TPL_SET_NAME, opt)
-
-	mailRender = &macaron.TplRender{
-		TemplateSet: ts,
-		Opt:         opt,
-	}
+func InitMailRender(tmpls *template.Template) {
+	templates = tmpls
 }
 
 // SendTestMail sends a test mail
@@ -67,13 +51,15 @@ func SendUserMail(c *macaron.Context, u *User, tpl base.TplName, code, subject,
 		"ResetPwdCodeLives": setting.Service.ResetPwdCodeLives / 60,
 		"Code":              code,
 	}
-	body, err := mailRender.HTMLString(string(tpl), data)
-	if err != nil {
-		log.Error(3, "HTMLString: %v", err)
+
+	var content bytes.Buffer
+
+	if err := templates.ExecuteTemplate(&content, string(tpl), data); err != nil {
+		log.Error(3, "Template: %v", err)
 		return
 	}
 
-	msg := mailer.NewMessage([]string{u.Email}, subject, body)
+	msg := mailer.NewMessage([]string{u.Email}, subject, content.String())
 	msg.Info = fmt.Sprintf("UID: %d, %s", u.ID, info)
 
 	mailer.SendAsync(msg)
@@ -97,13 +83,15 @@ func SendActivateEmailMail(c *macaron.Context, u *User, email *EmailAddress) {
 		"Code":            u.GenerateEmailActivateCode(email.Email),
 		"Email":           email.Email,
 	}
-	body, err := mailRender.HTMLString(string(mailAuthActivateEmail), data)
-	if err != nil {
-		log.Error(3, "HTMLString: %v", err)
+
+	var content bytes.Buffer
+
+	if err := templates.ExecuteTemplate(&content, string(mailAuthActivateEmail), data); err != nil {
+		log.Error(3, "Template: %v", err)
 		return
 	}
 
-	msg := mailer.NewMessage([]string{email.Email}, c.Tr("mail.activate_email"), body)
+	msg := mailer.NewMessage([]string{email.Email}, c.Tr("mail.activate_email"), content.String())
 	msg.Info = fmt.Sprintf("UID: %d, activate email", u.ID)
 
 	mailer.SendAsync(msg)
@@ -114,13 +102,15 @@ func SendRegisterNotifyMail(c *macaron.Context, u *User) {
 	data := map[string]interface{}{
 		"Username": u.DisplayName(),
 	}
-	body, err := mailRender.HTMLString(string(mailAuthRegisterNotify), data)
-	if err != nil {
-		log.Error(3, "HTMLString: %v", err)
+
+	var content bytes.Buffer
+
+	if err := templates.ExecuteTemplate(&content, string(mailAuthRegisterNotify), data); err != nil {
+		log.Error(3, "Template: %v", err)
 		return
 	}
 
-	msg := mailer.NewMessage([]string{u.Email}, c.Tr("mail.register_notify"), body)
+	msg := mailer.NewMessage([]string{u.Email}, c.Tr("mail.register_notify"), content.String())
 	msg.Info = fmt.Sprintf("UID: %d, registration notify", u.ID)
 
 	mailer.SendAsync(msg)
@@ -136,13 +126,15 @@ func SendCollaboratorMail(u, doer *User, repo *Repository) {
 		"RepoName": repoName,
 		"Link":     repo.HTMLURL(),
 	}
-	body, err := mailRender.HTMLString(string(mailNotifyCollaborator), data)
-	if err != nil {
-		log.Error(3, "HTMLString: %v", err)
+
+	var content bytes.Buffer
+
+	if err := templates.ExecuteTemplate(&content, string(mailNotifyCollaborator), data); err != nil {
+		log.Error(3, "Template: %v", err)
 		return
 	}
 
-	msg := mailer.NewMessage([]string{u.Email}, subject, body)
+	msg := mailer.NewMessage([]string{u.Email}, subject, content.String())
 	msg.Info = fmt.Sprintf("UID: %d, add collaborator", u.ID)
 
 	mailer.SendAsync(msg)
@@ -161,11 +153,14 @@ func composeIssueMessage(issue *Issue, doer *User, tplName base.TplName, tos []s
 	body := string(markdown.RenderSpecialLink([]byte(issue.Content), issue.Repo.HTMLURL(), issue.Repo.ComposeMetas()))
 	data := composeTplData(subject, body, issue.HTMLURL())
 	data["Doer"] = doer
-	content, err := mailRender.HTMLString(string(tplName), data)
-	if err != nil {
-		log.Error(3, "HTMLString (%s): %v", tplName, err)
+
+	var content bytes.Buffer
+
+	if err := templates.ExecuteTemplate(&content, string(tplName), data); err != nil {
+		log.Error(3, "Template: %v", err)
 	}
-	msg := mailer.NewMessageFrom(tos, fmt.Sprintf(`"%s" <%s>`, doer.DisplayName(), setting.MailService.FromEmail), subject, content)
+
+	msg := mailer.NewMessageFrom(tos, fmt.Sprintf(`"%s" <%s>`, doer.DisplayName(), setting.MailService.FromEmail), subject, content.String())
 	msg.Info = fmt.Sprintf("Subject: %s, %s", subject, info)
 	return msg
 }

modules/public/public.go

@@ -6,6 +6,8 @@ package public
 
 //go:generate go-bindata -tags "bindata" -ignore "\\.go|\\.less" -pkg "public" -o "bindata.go" ../../public/...
 //go:generate go fmt bindata.go
+//go:generate sed -i.bak s/..\/..\/public\/// bindata.go
+//go:generate rm -f bindata.go.bak
 
 // Options represents the available options to configure the macaron handler.
 type Options struct {

modules/public/static.go

@@ -22,7 +22,7 @@ func Static(opts *Options) macaron.Handler {
 				AssetDir:   AssetDir,
 				AssetInfo:  AssetInfo,
 				AssetNames: AssetNames,
-				Prefix:     "../../public",
+				Prefix:     "",
 			}),
 		},
 	)

modules/templates/dynamic.go

@@ -0,0 +1,88 @@
+// +build !bindata
+
+// Copyright 2016 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package templates
+
+import (
+	"fmt"
+	"html/template"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"code.gitea.io/gitea/modules/log"
+	template_func "code.gitea.io/gitea/modules/template"
+	"gopkg.in/macaron.v1"
+)
+
+// Renderer implements the macaron handler for serving the templates.
+func Renderer(opts *Options) macaron.Handler {
+	return macaron.Renderer(macaron.RenderOptions{
+		Directory:         opts.Directory,
+		AppendDirectories: opts.Custom,
+		Funcs:             template_func.NewFuncMap(),
+	})
+}
+
+// Mailer provides the templates required for sending notification mails.
+func Mailer(opts *Options) *template.Template {
+	templates := template.New("")
+
+	for _, funcs := range template_func.NewFuncMap() {
+		templates.Funcs(funcs)
+	}
+
+	if _, err := os.Stat(opts.Directory); err == nil {
+		if err := filepath.Walk(opts.Directory, func(path string, info os.FileInfo, _ error) error {
+			if info.IsDir() || !strings.HasSuffix(path, ".tmpl") {
+				return nil
+			}
+			name := strings.TrimSuffix(strings.TrimPrefix(path, opts.Directory+"/"), ".tmpl")
+			log.Info("Found new template: %s", name)
+			ts, err := loadTemplate(name, path)
+			if err != nil {
+				return nil
+			}
+			_, err = templates.Parse(ts)
+			return err
+		}); err != nil {
+			log.Error(3, "Unable to parse template directory %s. %v", opts.Directory, err)
+		}
+	}
+
+	for _, asset := range opts.Custom {
+		if _, err := os.Stat(asset); err == nil {
+			if err := filepath.Walk(asset, func(path string, info os.FileInfo, _ error) error {
+				if info.IsDir() || !strings.HasSuffix(path, ".tmpl") {
+					return nil
+				}
+				name := strings.TrimSuffix(strings.TrimPrefix(path, asset+"/"), ".tmpl")
+				log.Info("Found new template: %s", name)
+				ts, err := loadTemplate(name, path)
+				if err != nil {
+					return nil
+				}
+				_, err = templates.Parse(ts)
+				return err
+			}); err != nil {
+				log.Error(3, "Unable to parse template directory %s. %v", asset, err)
+			}
+		}
+	}
+
+	log.Error(3, templates.DefinedTemplates())
+
+	return templates
+}
+
+func loadTemplate(name, path string) (string, error) {
+	t, err := ioutil.ReadFile(path)
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf(`{{define "%s"}}%s{{end}}`, name, t), nil
+}

modules/templates/static.go

@@ -0,0 +1,70 @@
+// +build bindata
+
+// Copyright 2016 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package templates
+
+import (
+	"html/template"
+	"os"
+	"path"
+
+	"code.gitea.io/gitea/modules/log"
+	template_func "code.gitea.io/gitea/modules/template"
+	"github.com/go-macaron/bindata"
+	"gopkg.in/macaron.v1"
+)
+
+// Renderer implements the macaron handler for serving the templates.
+func Renderer(opts *Options) macaron.Handler {
+	return macaron.Renderer(macaron.RenderOptions{
+		AppendDirectories: opts.Custom,
+		Funcs:             template_func.NewFuncMap(),
+		TemplateFileSystem: bindata.Templates(
+			bindata.Options{
+				Asset:      Asset,
+				AssetDir:   AssetDir,
+				AssetInfo:  AssetInfo,
+				AssetNames: AssetNames,
+				Prefix:     "",
+			},
+		),
+	})
+}
+
+// Mailer provides the templates required for sending notification mails.
+func Mailer(opts *Options) *template.Template {
+	templates := template.New("")
+
+	for _, funcs := range template_func.NewFuncMap() {
+		templates.Funcs(funcs)
+	}
+
+	assets, err := AssetDir("mail")
+
+	if err != nil {
+		log.Error(3, "Unable to read mail asset dir. %s", err)
+	}
+
+	for _, asset := range assets {
+		bytes, err := Asset(asset)
+
+		if err != nil {
+			log.Error(3, "Unable to parse template %s. %s", asset, err)
+		}
+
+		templates.New(asset).Parse(string(bytes))
+	}
+
+	for _, asset := range opts.Custom {
+		if _, err := os.Stat(opts.Directory); err == nil {
+			if _, err := templates.ParseGlob(path.Join(asset, "*", "*.tmpl")); err != nil {
+				log.Error(3, "Unable to parse template directory %s. %s", opts.Directory, err)
+			}
+		}
+	}
+
+	return templates
+}

modules/templates/templates.go

@@ -0,0 +1,16 @@
+// Copyright 2016 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package templates
+
+//go:generate go-bindata -tags "bindata" -ignore "\\.go" -pkg "templates" -o "bindata.go" ../../templates/...
+//go:generate go fmt bindata.go
+//go:generate sed -i.bak s/..\/..\/templates\/// bindata.go
+//go:generate rm -f bindata.go.bak
+
+// Options represents the available options to configure the macaron handler.
+type Options struct {
+	Directory string
+	Custom    []string
+}

templates/.VERSION

@@ -1 +0,0 @@
-0.9.99.0915