Merge pull request 'add provider ini' (#6) from ini into master

Reviewed-on: https://gitoa.ru/go-4devs/config/pulls/6

.drone.yml

@@ -52,3 +52,23 @@ steps:
   commands:
   - cd provider/yaml
   - golangci-lint run
+
+---
+kind: pipeline
+type: docker
+name: ini
+
+steps:
+- name: test 
+  image: golang
+  failure: ignore # runtime/cgo: pthread_create failed: Operation not permitted
+  commands:
+  - cd provider/ini
+  - go test ./... 
+
+- name: golangci-lint
+  image: golangci/golangci-lint:v1.55
+  commands:
+  - cd provider/ini
+  - golangci-lint run
+

provider/ini/go.mod

@@ -0,0 +1,15 @@
+module gitoa.ru/go-4devs/config/provider/ini
+
+go 1.21
+
+require (
+	github.com/stretchr/testify v1.8.4
+	gitoa.ru/go-4devs/config v0.0.1
+	gopkg.in/ini.v1 v1.67.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

provider/ini/go.sum

@@ -0,0 +1,14 @@
+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/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/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+gitoa.ru/go-4devs/config v0.0.1 h1:9KrOO09YbIMO8qL8aVn/G74DurGdOIW5y3O02bays4I=
+gitoa.ru/go-4devs/config v0.0.1/go.mod h1:xfEC2Al9xnMLJUuekYs3KhJ5BIzWAseNwkMwbN6/xss=
+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/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
+gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

provider/ini/provider.go

@@ -0,0 +1,58 @@
+package ini
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"gitoa.ru/go-4devs/config"
+	"gitoa.ru/go-4devs/config/value"
+	"gopkg.in/ini.v1"
+)
+
+const (
+	Name      = "ini"
+	Separator = "."
+)
+
+var _ config.Provider = (*Provider)(nil)
+
+func New(data *ini.File) *Provider {
+	return &Provider{
+		data: data,
+		resolve: func(path []string) (string, string) {
+			if len(path) == 1 {
+				return "", path[0]
+			}
+
+			return strings.Join(path[:len(path)-1], Separator), strings.ToUpper(path[len(path)-1])
+		},
+		name: Name,
+	}
+}
+
+type Provider struct {
+	data    *ini.File
+	resolve func(path []string) (string, string)
+	name    string
+}
+
+func (p *Provider) Name() string {
+	return p.name
+}
+
+func (p *Provider) Value(_ context.Context, path ...string) (config.Value, error) {
+	section, name := p.resolve(path)
+
+	iniSection, err := p.data.GetSection(section)
+	if err != nil {
+		return nil, fmt.Errorf("%w: %s: %w", config.ErrValueNotFound, p.Name(), err)
+	}
+
+	iniKey, err := iniSection.GetKey(name)
+	if err != nil {
+		return nil, fmt.Errorf("%w: %s: %w", config.ErrValueNotFound, p.Name(), err)
+	}
+
+	return value.JString(iniKey.String()), nil
+}

provider/ini/provider_test.go

@@ -0,0 +1,38 @@
+package ini_test
+
+import (
+	"embed"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"gitoa.ru/go-4devs/config/provider/ini"
+	"gitoa.ru/go-4devs/config/test"
+	lib "gopkg.in/ini.v1"
+)
+
+//go:embed fixture/*
+var fixtures embed.FS
+
+func TestProvider(t *testing.T) {
+	t.Parallel()
+
+	data, derr := fixtures.ReadFile("fixture/config.ini")
+	require.NoError(t, derr)
+
+	file, err := lib.Load(data)
+	require.NoError(t, err)
+
+	read := []test.Read{
+		test.NewRead("To Do, In Progress, Done", "project", "PROJECT_BOARD_BASIC_KANBAN_TYPE"),
+		test.NewRead("markdown", "repository.editor", "PREVIEWABLE_FILE_MODES"),
+		test.NewRead("http://0.0.0.0:3000/", "server", "LOCAL_ROOT_URL"),
+		test.NewRead(20*time.Minute, "server", "LFS_HTTP_AUTH_EXPIRY"),
+		test.NewRead(5120, "repository.pull-request", "DEFAULT_MERGE_MESSAGE_SIZE"),
+		test.NewRead(true, "ui", "SHOW_USER_EMAIL"),
+		test.NewRead(false, "cors", "enabled"),
+	}
+
+	prov := ini.New(file)
+	test.Run(t, prov, read)
+}