tpl/time: Make it a package that stands on its own

See gohugoio#3042

tpl/time/init.go

@@ -0,0 +1,45 @@
+// Copyright 2017 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package time
+
+import (
+	"github.com/spf13/hugo/deps"
+	"github.com/spf13/hugo/tpl/internal"
+)
+
+const name = "time"
+
+func init() {
+	f := func(d *deps.Deps) *internal.TemplateFuncsNamespace {
+		ctx := New()
+
+		examples := [][2]string{
+			{`{{ (time "2015-01-21").Year }}`, `2015`},
+		}
+
+		return &internal.TemplateFuncsNamespace{
+			Name:    name,
+			Context: func() interface{} { return ctx },
+			Aliases: map[string]interface{}{
+				"dateFormat": ctx.Format,
+				"now":        ctx.Now,
+				"time":       ctx.AsTime,
+			},
+			Examples: examples,
+		}
+
+	}
+
+	internal.AddTemplateFuncsNamespace(f)
+}

tpl/tplimpl/templateFuncster.go

@@ -21,7 +21,6 @@ import (
 
 	bp "github.com/spf13/hugo/bufferpool"
 	"github.com/spf13/hugo/deps"
-	"github.com/spf13/hugo/tpl/time"
 	"github.com/spf13/hugo/tpl/transform"
 	"github.com/spf13/hugo/tpl/urls"
 )
@@ -32,7 +31,6 @@ type templateFuncster struct {
 	cachedPartials partialCache
 
 	// Namespaces
-	time      *time.Namespace
 	transform *transform.Namespace
 	urls      *urls.Namespace
 
@@ -45,7 +43,6 @@ func newTemplateFuncster(deps *deps.Deps) *templateFuncster {
 		cachedPartials: partialCache{p: make(map[string]interface{})},
 
 		// Namespaces
-		time:      time.New(),
 		transform: transform.New(deps),
 		urls:      urls.New(deps),
 	}

tpl/tplimpl/template_funcs.go

@@ -36,6 +36,7 @@ import (
 	_ "github.com/spf13/hugo/tpl/os"
 	_ "github.com/spf13/hugo/tpl/safe"
 	_ "github.com/spf13/hugo/tpl/strings"
+	_ "github.com/spf13/hugo/tpl/time"
 )
 
 // Get retrieves partial output from the cache based upon the partial name.
@@ -95,14 +96,12 @@ func (t *templateFuncster) initFuncMap() {
 
 		"absURL":        t.urls.AbsURL,
 		"absLangURL":    t.urls.AbsLangURL,
-		"dateFormat":    t.time.Format,
 		"emojify":       t.transform.Emojify,
 		"highlight":     t.transform.Highlight,
 		"htmlEscape":    t.transform.HTMLEscape,
 		"htmlUnescape":  t.transform.HTMLUnescape,
 		"int":           func(v interface{}) (int, error) { return cast.ToIntE(v) },
 		"markdownify":   t.transform.Markdownify,
-		"now":           t.time.Now,
 		"partial":       t.partial,
 		"partialCached": t.partialCached,
 		"plainify":      t.transform.Plainify,
@@ -114,7 +113,6 @@ func (t *templateFuncster) initFuncMap() {
 		"relLangURL":    t.urls.RelLangURL,
 		"relref":        t.urls.RelRef,
 		"string":        func(v interface{}) (string, error) { return cast.ToStringE(v) },
-		"time":          t.time.AsTime,
 		"urlize":        t.PathSpec.URLize,
 	}
 

tpl/tplimpl/template_funcs_test.go

@@ -146,7 +146,6 @@ relURL 1: {{ "http://gohugo.io/" | relURL }}
 relURL 2: {{ "mystyle.css" | relURL }}
 relURL 3: {{ mul 2 21 | relURL }}
 strings.TrimPrefix: {{ strings.TrimPrefix "Goodbye,, world!" "Goodbye," }}
-time: {{ (time "2015-01-21").Year }}
 urlize: {{ "Bat Man" | urlize }}
 `
 
@@ -174,7 +173,6 @@ relURL 1: http://gohugo.io/
 relURL 2: /hugo/mystyle.css
 relURL 3: /hugo/42
 strings.TrimPrefix: , world!
-time: 2015
 urlize: bat-man
 `