From 0907a5c1c293755e6bf297246f07888448d81f8b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Erik=20Pedersen?=
 <bjorn.erik.pedersen@gmail.com>
Date: Wed, 31 May 2017 13:10:46 +0300
Subject: [PATCH] all: Temporarily revert to BurntSushi for TOML front matter
 handling

We still have go-toml as a transitive dependency, and it is the way to go eventually, but we care about speed, so let us wait that one out.

Note that the issue this fixes is about taxonomies, but I guess this is a general issue for sites with many pages that uses TOML as front matter.

```
benchmark                              old ns/op     new ns/op     delta
BenchmarkFrontmatterTags/TOML:1-4      23206         8543          -63.19%
BenchmarkFrontmatterTags/TOML:11-4     80117         18495         -76.92%
BenchmarkFrontmatterTags/TOML:21-4     140676        28727         -79.58%

benchmark                              old allocs     new allocs     delta
BenchmarkFrontmatterTags/TOML:1-4      173            60             -65.32%
BenchmarkFrontmatterTags/TOML:11-4     625            138            -77.92%
BenchmarkFrontmatterTags/TOML:21-4     1106           210            -81.01%

benchmark                              old bytes     new bytes     delta
BenchmarkFrontmatterTags/TOML:1-4      9231          2912          -68.45%
BenchmarkFrontmatterTags/TOML:11-4     19808         5184          -73.83%
BenchmarkFrontmatterTags/TOML:21-4     31200         7536          -75.85%
```

See #3541
Updates #3464
---
 commands/new.go          |  2 +-
 hugolib/menu_old_test.go | 13 ++++---------
 parser/frontmatter.go    | 18 ++++--------------
 3 files changed, 9 insertions(+), 24 deletions(-)

diff --git a/commands/new.go b/commands/new.go
index d8548ebdc..964102aac 100644
--- a/commands/new.go
+++ b/commands/new.go
@@ -355,7 +355,7 @@ func newContentPathSection(path string) (string, string) {
 }
 
 func createConfig(fs *hugofs.Fs, inpath string, kind string) (err error) {
-	in := map[string]interface{}{
+	in := map[string]string{
 		"baseURL":      "http://example.org/",
 		"title":        "My New Hugo Site",
 		"languageCode": "en-us",
diff --git a/hugolib/menu_old_test.go b/hugolib/menu_old_test.go
index 704a6f70a..036c855ad 100644
--- a/hugolib/menu_old_test.go
+++ b/hugolib/menu_old_test.go
@@ -25,7 +25,7 @@ import (
 
 	"path/filepath"
 
-	toml "github.com/pelletier/go-toml"
+	"github.com/BurntSushi/toml"
 	"github.com/spf13/hugo/source"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -634,12 +634,7 @@ func setupMenuTests(t *testing.T, pageSources []source.ByteSource, configKeyValu
 }
 
 func tomlToMap(s string) (map[string]interface{}, error) {
-	tree, err := toml.Load(s)
-
-	if err != nil {
-		return nil, err
-	}
-
-	return tree.ToMap(), nil
-
+	var data = make(map[string]interface{})
+	_, err := toml.Decode(s, &data)
+	return data, err
 }
diff --git a/parser/frontmatter.go b/parser/frontmatter.go
index b773fe5ce..627d5ef49 100644
--- a/parser/frontmatter.go
+++ b/parser/frontmatter.go
@@ -20,8 +20,8 @@ import (
 	"io"
 	"strings"
 
+	"github.com/BurntSushi/toml"
 	"github.com/chaseadamsio/goorgeous"
-	toml "github.com/pelletier/go-toml"
 
 	"gopkg.in/yaml.v2"
 )
@@ -52,13 +52,7 @@ func InterfaceToConfig(in interface{}, mark rune, w io.Writer) error {
 		return err
 
 	case rune(TOMLLead[0]):
-		tree, err := toml.TreeFromMap(in.(map[string]interface{}))
-		if err != nil {
-			return err
-		}
-
-		_, err = tree.WriteTo(w)
-		return err
+		return toml.NewEncoder(w).Encode(in)
 	case rune(JSONLead[0]):
 		b, err := json.MarshalIndent(in, "", "   ")
 		if err != nil {
@@ -176,14 +170,10 @@ func HandleTOMLMetaData(datum []byte) (interface{}, error) {
 	m := map[string]interface{}{}
 	datum = removeTOMLIdentifier(datum)
 
-	tree, err := toml.LoadReader(bytes.NewReader(datum))
-	if err != nil {
-		return m, err
-	}
+	_, err := toml.Decode(string(datum), &m)
 
-	m = tree.ToMap()
+	return m, err
 
-	return m, nil
 }
 
 // removeTOMLIdentifier removes, if necessary, beginning and ending TOML