perf(template): cache template functions

src/main.go

@@ -1,6 +1,8 @@
 package main
 
-import "github.com/jandedobbeleer/oh-my-posh/src/cli"
+import (
+	"github.com/jandedobbeleer/oh-my-posh/src/cli"
+)
 
 func main() {
 	cli.Execute()

src/main_test.go

@@ -10,7 +10,7 @@ import (
 func BenchmarkInit(b *testing.B) {
 	cmd := cli.RootCmd
 	// needs to be a non-existing file as we panic otherwise
-	cmd.SetArgs([]string{"init", "fish", "--print", "--config", "err.omp.json"})
+	cmd.SetArgs([]string{"init", "fish", "--print"})
 	out := bytes.NewBufferString("")
 	cmd.SetOut(out)
 
@@ -22,7 +22,7 @@ func BenchmarkInit(b *testing.B) {
 func BenchmarkPrimary(b *testing.B) {
 	cmd := cli.RootCmd
 	// needs to be a non-existing file as we panic otherwise
-	cmd.SetArgs([]string{"print", "primary", "--config", "err.omp.json", "--pwd", "/Users/jan/Code/oh-my-posh/src", "--shell", "fish"})
+	cmd.SetArgs([]string{"print", "primary", "--pwd", "/Users/jan/Code/oh-my-posh/src", "--shell", "fish"})
 	out := bytes.NewBufferString("")
 	cmd.SetOut(out)
 

src/template/text.go

@@ -48,6 +48,8 @@ var (
 	}
 
 	shell string
+
+	tmplFunc = template.New("cache").Funcs(funcMap())
 )
 
 type Text struct {
@@ -87,7 +89,7 @@ func (t *Text) Render() (string, error) {
 
 	t.cleanTemplate()
 
-	tmpl, err := template.New(t.Template).Funcs(funcMap()).Parse(t.Template)
+	tmpl, err := tmplFunc.Parse(t.Template)
 	if err != nil {
 		t.Env.Error(err)
 		return "", errors.New(InvalidTemplate)
@@ -106,6 +108,7 @@ func (t *Text) Render() (string, error) {
 		if len(msg) == 0 {
 			return "", errors.New(IncorrectTemplate)
 		}
+
 		return "", errors.New(msg["MSG"])
 	}