feat: remove v1 toml parser

parsers/toml/go.mod

@@ -1,10 +1,10 @@
-module github.com/knadh/koanf/parsers/toml
+module github.com/knadh/koanf/parsers/toml/v2
 
 go 1.18
 
 require (
-	github.com/pelletier/go-toml v1.9.5
-	github.com/stretchr/testify v1.8.1
+	github.com/pelletier/go-toml/v2 v2.1.1
+	github.com/stretchr/testify v1.8.4
 )
 
 require (

parsers/toml/go.sum

@@ -1,17 +1,17 @@
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/pelletier/go-toml v1.9.5 h1:4yBQzkHv+7BHq2PQUZF3Mx0IYxG7LsP222s7Agd3ve8=
-github.com/pelletier/go-toml v1.9.5/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
+github.com/pelletier/go-toml/v2 v2.1.1 h1:LWAJwfNvjQZCFIDKWYQaM62NcYeYViCmWIwmOStowAI=
+github.com/pelletier/go-toml/v2 v2.1.1/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdUvyaeZurnPPDc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
-github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

parsers/toml/toml.go

@@ -2,9 +2,7 @@
 package toml
 
 import (
-	"bytes"
-
-	"github.com/pelletier/go-toml"
+	"github.com/pelletier/go-toml/v2"
 )
 
 // TOML implements a TOML parser.
@@ -17,18 +15,21 @@ func Parser() *TOML {
 
 // Unmarshal parses the given TOML bytes.
 func (p *TOML) Unmarshal(b []byte) (map[string]interface{}, error) {
-	r, err := toml.LoadReader(bytes.NewBuffer(b))
-	if err != nil {
+	var outMap map[string]interface{}
+
+	if err := toml.Unmarshal(b, &outMap); err != nil {
 		return nil, err
 	}
-	return r.ToMap(), err
+
+	return outMap, nil
 }
 
 // Marshal marshals the given config map to TOML bytes.
 func (p *TOML) Marshal(o map[string]interface{}) ([]byte, error) {
-	out, err := toml.TreeFromMap(o)
+	out, err := toml.Marshal(&o)
 	if err != nil {
 		return nil, err
 	}
-	return out.Marshal()
+
+	return out, nil
 }

parsers/toml/toml_test.go

@@ -16,7 +16,7 @@ func TestTOML_Unmarshal(t *testing.T) {
 		{
 			name:   "Empty TOML",
 			input:  []byte(``),
-			output: map[string]interface{}{},
+			output: map[string]interface{}(nil),
 		},
 		{
 			name: "Valid TOML",
@@ -95,8 +95,8 @@ func TestTOML_Marshal(t *testing.T) {
 				"name":   "test",
 				"number": 2.0,
 			},
-			output: []byte(`key = "val"
-name = "test"
+			output: []byte(`key = 'val'
+name = 'test'
 number = 2.0
 `),
 		},
@@ -110,15 +110,15 @@ number = 2.0
 				"object":  map[string]interface{}{"a": "b", "c": "d"},
 				"string":  "Hello World",
 			},
-			output: []byte(`array = [1,2,3,4,5]
+			output: []byte(`array = [1, 2, 3, 4, 5]
 boolean = true
-color = "gold"
+color = 'gold'
 number = 123
-string = "Hello World"
+string = 'Hello World'
 
 [object]
-  a = "b"
-  c = "d"
+a = 'b'
+c = 'd'
 `),
 		},
 	}