added some functions from helm (#10)

Gopkg.toml

@@ -24,11 +24,6 @@
 #   go-tests = true
 #   unused-packages = true
 
-
-[[constraint]]
-  name = "github.com/Masterminds/sprig"
-  version = "2.16.0"
-
 [[constraint]]
   name = "github.com/ghodss/yaml"
   version = "1.0.0"
@@ -41,10 +36,6 @@
   name = "github.com/stretchr/testify"
   version = "1.2.1"
 
-[[constraint]]
-  name = "k8s.io/helm"
-  version = "2.8.2"
-
 [prune]
   go-tests = true
   unused-packages = true

README.md

@@ -9,7 +9,7 @@ Inspired by [Helm](https://github.com/kubernetes/helm)
 
 Started as a fork from [github.com/tsg/gotpl](https://github.com/tsg/gotpl) but this project looks abandoned
 
-Added some things from [Helm](https://github.com/kubernetes/helm), like the way they read values.
+Added some things from [Helm](https://github.com/kubernetes/helm), like the way they read values, and some functions for the templates.
 
 And some improvements by myself :)
 

commands/version.go

@@ -8,7 +8,7 @@ import (
 
 // Version should be updated each time there is a new release
 var (
-	Version   = "v0.4"
+	Version   = "v0.5"
 	GitCommit = ""
 )
 

tpl/tpl.go

@@ -11,13 +11,33 @@ import (
 
 	"github.com/Masterminds/sprig"
 	"github.com/ghodss/yaml"
+	"k8s.io/helm/pkg/chartutil"
 	"k8s.io/helm/pkg/strvals"
 )
 
+func getFunctions() template.FuncMap {
+	f := sprig.TxtFuncMap()
+
+	// from Helm!
+	extra := template.FuncMap{
+		"toToml":   chartutil.ToToml,
+		"toYaml":   chartutil.ToYaml,
+		"fromYaml": chartutil.FromYaml,
+		"toJson":   chartutil.ToJson,
+		"fromJson": chartutil.FromJson,
+	}
+
+	for k, v := range extra {
+		f[k] = v
+	}
+
+	return f
+}
+
 func executeTemplates(values map[string]interface{}, tplFiles []string, isStrict bool) (string, error) {
 	buf := bytes.NewBuffer(nil)
 	for _, f := range tplFiles {
-		tpl := template.New(path.Base(f)).Funcs(sprig.TxtFuncMap())
+		tpl := template.New(path.Base(f)).Funcs(getFunctions())
 		if isStrict {
 			tpl.Option("missingkey=error")
 		}