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

See #3042

1 files changed, 53 insertions, 0 deletions

diff --git a/tpl/math/init.go b/tpl/math/init.go
new file mode 100644
index 000000000..69ba2cc17
--- /dev/null
+++ b/tpl/math/init.go
@@ -0,0 +1,53 @@
+// 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 math
+
+import (
+	"github.com/spf13/hugo/deps"
+	"github.com/spf13/hugo/tpl/internal"
+)
+
+const name = "math"
+
+func init() {
+	f := func(d *deps.Deps) *internal.TemplateFuncsNamespace {
+		ctx := New()
+
+		examples := [][2]string{
+			{"{{add 1 2}}", "3"},
+			{"{{div 6 3}}", "2"},
+			{"{{mod 15 3}}", "0"},
+			{"{{modBool 15 3}}", "true"},
+			{"{{mul 2 3}}", "6"},
+			{"{{sub 3 2}}", "1"},
+		}
+
+		return &internal.TemplateFuncsNamespace{
+			Name:    name,
+			Context: func() interface{} { return ctx },
+			Aliases: map[string]interface{}{
+				"add":     ctx.Add,
+				"div":     ctx.Div,
+				"mod":     ctx.Mod,
+				"modBool": ctx.ModBool,
+				"mul":     ctx.Mul,
+				"sub":     ctx.Sub,
+			},
+			Examples: examples,
+		}
+
+	}
+
+	internal.AddTemplateFuncsNamespace(f)
+}