def (#12)

Reviewed-on: #12

definition/defenition.go

@@ -1,29 +1,23 @@
 package definition
 
 import (
-	"fmt"
+	"gitoa.ru/go-4devs/config"
 )
 
-func New() Definition {
-	return Definition{}
+func New(opts ...config.Option) *Definition {
+	return &Definition{
+		options: opts,
+	}
 }
 
 type Definition struct {
-	options Options
+	options []config.Option
 }
 
-func (d *Definition) Add(opts ...Option) *Definition {
+func (d *Definition) Add(opts ...config.Option) {
 	d.options = append(d.options, opts...)
-
-	return d
 }
 
-func (d *Definition) View(handle func(Option) error) error {
-	for idx, opt := range d.options {
-		if err := handle(opt); err != nil {
-			return fmt.Errorf("%s[%d]:%w", opt.Kind(), idx, err)
-		}
-	}
-
-	return nil
+func (d *Definition) Options() []config.Option {
+	return d.options
 }

definition/generate/bootstrap/bootstrap.go

@@ -0,0 +1,94 @@
+package bootstrap
+
+import (
+	"context"
+	"embed"
+	"fmt"
+	"os"
+	"path/filepath"
+	"text/template"
+
+	"gitoa.ru/go-4devs/config/definition/generate/pkg"
+)
+
+//go:embed *.tpl
+var tpls embed.FS
+
+type Boot struct {
+	Config
+
+	imp       *pkg.Imports
+	Configure []string
+	OutName   string
+}
+
+func (b Boot) Imports() []pkg.Import {
+	return b.imp.Imports()
+}
+
+type Config interface {
+	File() string
+	Methods() []string
+	SkipContext() bool
+	Prefix() string
+	Suffix() string
+	FullPkg() string
+	Pkg() string
+}
+
+func Bootstrap(ctx context.Context, cfg Config) (string, error) {
+	fInfo, err := os.Stat(cfg.File())
+	if err != nil {
+		return "", fmt.Errorf("stat:%w", err)
+	}
+
+	pkgPath, err := pkg.ByPath(ctx, cfg.File(), fInfo.IsDir())
+	if err != nil {
+		return "", fmt.Errorf("pkg by path:%w", err)
+	}
+
+	tmpFile, err := os.CreateTemp(filepath.Dir(fInfo.Name()), "config-bootstrap")
+	if err != nil {
+		return "", fmt.Errorf("create tmp file:%w", err)
+	}
+
+	tpl, err := template.ParseFS(tpls, "bootstrap.go.tpl")
+	if err != nil {
+		return "", fmt.Errorf("parse template:%w", err)
+	}
+
+	imports := pkg.NewImports("main").
+		Adds(
+			"context",
+			"gitoa.ru/go-4devs/config/definition",
+			"gitoa.ru/go-4devs/config/definition/generate",
+			"os",
+			"fmt",
+			"go/format",
+			pkgPath,
+		)
+
+	data := Boot{
+		imp:       imports,
+		Configure: cfg.Methods(),
+		OutName:   fInfo.Name()[0:len(fInfo.Name())-3] + "_config.go",
+		Config:    cfg,
+	}
+
+	if err := tpl.Execute(tmpFile, data); err != nil {
+		return "", fmt.Errorf("execute:%w", err)
+	}
+
+	src := tmpFile.Name()
+	if err := tmpFile.Close(); err != nil {
+		return src, fmt.Errorf("close file:%w", err)
+	}
+
+	dest := src + ".go"
+
+	if err := os.Rename(src, dest); err != nil {
+		return dest, fmt.Errorf("rename idt:%w", err)
+	}
+
+	return dest, nil
+}

definition/generate/bootstrap/bootstrap.go.tpl

@@ -0,0 +1,59 @@
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	{{range .Imports}}
+    {{- .Alias }}"{{ .Package }}"
+    {{end}}
+)
+
+func main() {
+	if err := run(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func run() error {
+	ctx := context.Background()
+
+	f, err := os.Create("{{.OutName}}")
+	if err != nil {
+		return err
+	}
+
+	defs:=make([]generate.Input,0)
+{{ range .Configure }} 
+	def{{.}} := definition.New()
+	if err := {{$.Pkg}}.{{.}}(ctx, def{{.}}); err != nil {
+		return err
+	}
+	defs = append(defs,generate.NewInput("{{.}}",def{{.}}))
+{{ end }}
+
+	opts := make([]generate.Option,0)
+	{{ if .SkipContext }}opts = append(opts, generate.WithSkipContext){{ end }}
+	opts = append(opts, 
+		generate.WithPrefix("{{.Prefix}}"),
+		generate.WithSuffix("{{.Suffix}}"),
+		generate.WithFullPkg("{{.FullPkg}}"),
+	)
+
+	if gerr := generate.Run(ctx,generate.NewConfig(opts...),f, defs...);gerr != nil {
+		return gerr
+	}
+
+	in, err := os.ReadFile(f.Name())
+	if err != nil {
+		return err
+	}
+
+	out, err := format.Source(in)
+	if err != nil {
+		return err
+	}
+
+	return os.WriteFile(f.Name(), out, 0644)
+}

definition/generate/example/config.go

@@ -0,0 +1,37 @@
+package example
+
+import (
+	"context"
+
+	"gitoa.ru/go-4devs/config/definition"
+	"gitoa.ru/go-4devs/config/definition/generate/view"
+	"gitoa.ru/go-4devs/config/definition/group"
+	"gitoa.ru/go-4devs/config/definition/option"
+	"gitoa.ru/go-4devs/config/definition/proto"
+)
+
+type Level string
+
+func (l *Level) UnmarshalText(in []byte) error {
+	data := string(in)
+	*l = Level(data)
+
+	return nil
+}
+
+func Config(_ context.Context, def *definition.Definition) error {
+	def.Add(
+		option.String("test", "test string", view.WithSkipContext),
+		group.New("user", "configure user",
+			option.String("name", "name", option.Default("4devs")),
+			option.String("pass", "password"),
+		),
+
+		group.New("log", "configure logger",
+			option.New("level", "log level", Level("")),
+			proto.New("service", "servise logger", option.New("level", "log level", Level(""))),
+		),
+	)
+
+	return nil
+}

definition/generate/example/config_config.go

@@ -0,0 +1,206 @@
+// Code generated gitoa.ru/go-4devs/config DO NOT EDIT.
+package example
+
+import (
+	context "context"
+	fmt "fmt"
+	config "gitoa.ru/go-4devs/config"
+)
+
+func WithInputConfigLog(log func(context.Context, string, ...any)) func(*InputConfig) {
+	return func(ci *InputConfig) {
+		ci.log = log
+	}
+}
+
+func NewInputConfig(prov config.Provider, opts ...func(*InputConfig)) InputConfig {
+	i := InputConfig{
+		Provider: prov,
+		log: func(_ context.Context, format string, args ...any) {
+			fmt.Printf(format, args...)
+		},
+	}
+
+	for _, opt := range opts {
+		opt(&i)
+	}
+
+	return i
+}
+
+type InputConfig struct {
+	config.Provider
+	log func(context.Context, string, ...any)
+}
+
+// readTest test string.
+func (i InputConfig) readTest(ctx context.Context) (v string, e error) {
+	val, err := i.Value(ctx, "test")
+	if err != nil {
+		return v, fmt.Errorf("read [%v]:%w", []string{"test"}, err)
+
+	}
+
+	return val.ParseString()
+
+}
+
+// ReadTest test string.
+func (i InputConfig) ReadTest() (string, error) {
+	return i.readTest(context.Background())
+}
+
+// Test test string.
+func (i InputConfig) Test() string {
+	val, err := i.readTest(context.Background())
+	if err != nil {
+		i.log(context.Background(), "get [%v]: %v", []string{"test"}, err)
+	}
+
+	return val
+}
+
+type InputConfigUser struct {
+	InputConfig
+}
+
+// User configure user.
+func (i InputConfig) User() InputConfigUser {
+	return InputConfigUser{i}
+}
+
+// readName name.
+func (i InputConfigUser) readName(ctx context.Context) (v string, e error) {
+	val, err := i.Value(ctx, "user", "name")
+	if err != nil {
+		i.log(context.Background(), "read [%v]: %v", []string{"user", "name"}, err)
+
+		return "4devs", nil
+	}
+
+	return val.ParseString()
+
+}
+
+// ReadName name.
+func (i InputConfigUser) ReadName(ctx context.Context) (string, error) {
+	return i.readName(ctx)
+}
+
+// Name name.
+func (i InputConfigUser) Name(ctx context.Context) string {
+	val, err := i.readName(ctx)
+	if err != nil {
+		i.log(ctx, "get [%v]: %v", []string{"user", "name"}, err)
+	}
+
+	return val
+}
+
+// readPass password.
+func (i InputConfigUser) readPass(ctx context.Context) (v string, e error) {
+	val, err := i.Value(ctx, "user", "pass")
+	if err != nil {
+		return v, fmt.Errorf("read [%v]:%w", []string{"user", "pass"}, err)
+
+	}
+
+	return val.ParseString()
+
+}
+
+// ReadPass password.
+func (i InputConfigUser) ReadPass(ctx context.Context) (string, error) {
+	return i.readPass(ctx)
+}
+
+// Pass password.
+func (i InputConfigUser) Pass(ctx context.Context) string {
+	val, err := i.readPass(ctx)
+	if err != nil {
+		i.log(ctx, "get [%v]: %v", []string{"user", "pass"}, err)
+	}
+
+	return val
+}
+
+type InputConfigLog struct {
+	InputConfig
+}
+
+// Log configure logger.
+func (i InputConfig) Log() InputConfigLog {
+	return InputConfigLog{i}
+}
+
+// readLevel log level.
+func (i InputConfigLog) readLevel(ctx context.Context) (v Level, e error) {
+	val, err := i.Value(ctx, "log", "level")
+	if err != nil {
+		return v, fmt.Errorf("read [%v]:%w", []string{"log", "level"}, err)
+
+	}
+
+	pval, perr := val.ParseString()
+	if perr != nil {
+		return v, fmt.Errorf("read [%v]:%w", []string{"log", "level"}, perr)
+	}
+
+	return v, v.UnmarshalText([]byte(pval))
+}
+
+// ReadLevel log level.
+func (i InputConfigLog) ReadLevel(ctx context.Context) (Level, error) {
+	return i.readLevel(ctx)
+}
+
+// Level log level.
+func (i InputConfigLog) Level(ctx context.Context) Level {
+	val, err := i.readLevel(ctx)
+	if err != nil {
+		i.log(ctx, "get [%v]: %v", []string{"log", "level"}, err)
+	}
+
+	return val
+}
+
+type InputConfigLogService struct {
+	InputConfigLog
+	service string
+}
+
+// Service servise logger.
+func (i InputConfigLog) Service(key string) InputConfigLogService {
+	return InputConfigLogService{i, key}
+}
+
+// readLevel log level.
+func (i InputConfigLogService) readLevel(ctx context.Context) (v Level, e error) {
+	val, err := i.Value(ctx, "log", i.service, "level")
+	if err != nil {
+		return v, fmt.Errorf("read [%v]:%w", []string{"log", i.service, "level"}, err)
+
+	}
+
+	pval, perr := val.ParseString()
+	if perr != nil {
+		return v, fmt.Errorf("read [%v]:%w", []string{"log", i.service, "level"}, perr)
+	}
+
+	return v, v.UnmarshalText([]byte(pval))
+}
+
+// ReadLevel log level.
+func (i InputConfigLogService) ReadLevel(ctx context.Context) (Level, error) {
+	return i.readLevel(ctx)
+}
+
+// Level log level.
+func (i InputConfigLogService) Level(ctx context.Context) Level {
+	val, err := i.readLevel(ctx)
+	if err != nil {
+		i.log(ctx, "get [%v]: %v", []string{"log", i.service, "level"}, err)
+	}
+
+	return val
+}

definition/generate/example/generate_test.go

@@ -0,0 +1,59 @@
+package example_test
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"gitoa.ru/go-4devs/config/definition"
+	"gitoa.ru/go-4devs/config/definition/generate"
+	"gitoa.ru/go-4devs/config/definition/generate/bootstrap"
+	"gitoa.ru/go-4devs/config/definition/generate/example"
+)
+
+func TestGenerate_Bootstrap(t *testing.T) {
+	t.SkipNow()
+	t.Parallel()
+
+	ctx := context.Background()
+	options := definition.New()
+	_ = example.Config(ctx, options)
+
+	cfg, _ := generate.NewGConfig("./config.go",
+		generate.WithMethods("Config"),
+		generate.WithFullPkg("gitoa.ru/go-4devs/config/definition/generate/example"),
+	)
+
+	path, err := bootstrap.Bootstrap(ctx, cfg)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	os.Remove(path)
+
+	t.Log(path)
+	t.FailNow()
+}
+
+func TestGenerate_Genereate(t *testing.T) {
+	t.SkipNow()
+	t.Parallel()
+
+	ctx := context.Background()
+	options := definition.New()
+	_ = example.Config(ctx, options)
+
+	cfg, _ := generate.NewGConfig("./config.go",
+		generate.WithMethods("Config"),
+		generate.WithFullPkg("gitoa.ru/go-4devs/config/definition/generate/example"),
+	)
+
+	err := generate.Generate(ctx, cfg)
+	if err != nil {
+		t.Error(err)
+		t.FailNow()
+	}
+
+	t.FailNow()
+}

definition/generate/exec.go

@@ -0,0 +1,78 @@
+package generate
+
+import (
+	"context"
+	"fmt"
+	"go/format"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"gitoa.ru/go-4devs/config/definition/generate/bootstrap"
+)
+
+func NewGConfig(fname string, opts ...Option) (Config, error) {
+	opts = append([]Option{
+		WithFile(fname),
+	}, opts...)
+
+	return NewConfig(opts...), nil
+}
+
+type GConfig interface {
+	BuildTags() string
+	OutName() string
+	bootstrap.Config
+}
+
+func Generate(ctx context.Context, cfg GConfig) error {
+	path, err := bootstrap.Bootstrap(ctx, cfg)
+	defer os.Remove(path)
+
+	if err != nil {
+		return fmt.Errorf("build bootstrap:%w", err)
+	}
+
+	tmpFile, err := os.Create(cfg.File() + ".tmp")
+	if err != nil {
+		return fmt.Errorf("create tmp file:%w", err)
+	}
+
+	defer os.Remove(tmpFile.Name()) // will not remove after rename
+
+	execArgs := []string{"run"}
+	if len(cfg.BuildTags()) > 0 {
+		execArgs = append(execArgs, "-tags", cfg.BuildTags())
+	}
+
+	execArgs = append(execArgs, filepath.Base(path))
+	cmd := exec.CommandContext(ctx, "go", execArgs...)
+
+	cmd.Stdout = tmpFile
+	cmd.Stderr = os.Stderr
+
+	cmd.Dir = filepath.Dir(path)
+	if err = cmd.Run(); err != nil {
+		return fmt.Errorf("start cmd:%w", err)
+	}
+
+	tmpFile.Close()
+
+	// format file and write to out path
+	in, err := os.ReadFile(tmpFile.Name())
+	if err != nil {
+		return fmt.Errorf("read file: %w", err)
+	}
+
+	out, err := format.Source(in)
+	if err != nil {
+		return fmt.Errorf("format source:%w", err)
+	}
+
+	err = os.WriteFile(cfg.OutName(), out, 0o644) //nolint:gosec,mnd
+	if err != nil {
+		return fmt.Errorf("write file:%w", err)
+	}
+
+	return nil
+}

definition/generate/generate.go

@@ -0,0 +1,233 @@
+package generate
+
+import (
+	"bytes"
+	"context"
+	"embed"
+	"fmt"
+	"io"
+	"strings"
+	"text/template"
+	"unicode"
+
+	"gitoa.ru/go-4devs/config"
+	"gitoa.ru/go-4devs/config/definition/generate/pkg"
+	"gitoa.ru/go-4devs/config/definition/generate/render"
+	"gitoa.ru/go-4devs/config/definition/generate/view"
+	"gitoa.ru/go-4devs/config/param"
+)
+
+type Option func(*Config)
+
+func WithSkipContext(c *Config) {
+	view.WithSkipContext(c.Params)
+}
+
+func WithPrefix(name string) Option {
+	return func(c *Config) {
+		c.prefix = name
+	}
+}
+
+func WithSuffix(name string) Option {
+	return func(c *Config) {
+		c.suffix = name
+	}
+}
+
+// WithMethods set methosd.
+//
+// generate.WithMethods(runtime.FuncForPC(reflect.ValueOf(configure).Pointer()).Name()).
+func WithMethods(in ...string) Option {
+	return func(c *Config) {
+		c.methods = in
+	}
+}
+
+func WithOutName(in string) Option {
+	return func(c *Config) {
+		c.outName = in
+	}
+}
+
+func WithFile(in string) Option {
+	return func(c *Config) {
+		c.file = in
+	}
+}
+
+func WithFullPkg(in string) Option {
+	return func(c *Config) {
+		c.fullPkg = in
+	}
+}
+
+func NewConfig(opts ...Option) Config {
+	var cfg Config
+
+	cfg.Params = param.New()
+	cfg.prefix = "Input"
+
+	for _, opt := range opts {
+		opt(&cfg)
+	}
+
+	return cfg
+}
+
+type Config struct {
+	param.Params
+
+	methods   []string
+	prefix    string
+	suffix    string
+	fullPkg   string
+	pkg       string
+	file      string
+	buildTags string
+	outName   string
+}
+
+func (c Config) BuildTags() string {
+	return c.buildTags
+}
+
+func (c Config) Pkg() string {
+	if c.pkg == "" {
+		if idx := strings.LastIndex(c.fullPkg, "/"); idx != -1 {
+			c.pkg = c.fullPkg[idx+1:]
+		}
+	}
+
+	return c.pkg
+}
+
+func (c Config) FullPkg() string {
+	return c.fullPkg
+}
+
+func (c Config) SkipContext() bool {
+	return view.IsSkipContext(c.Params)
+}
+
+func (c Config) Methods() []string {
+	return c.methods
+}
+
+func (c Config) Prefix() string {
+	return c.prefix
+}
+
+func (c Config) Suffix() string {
+	return c.suffix
+}
+
+func (c Config) File() string {
+	return c.file
+}
+
+func (c Config) OutName() string {
+	return c.outName
+}
+
+//go:embed tpl/*
+var tpls embed.FS
+
+var initTpl = template.Must(template.New("tpls").ParseFS(tpls, "tpl/*.tpl")).Lookup("init.go.tpl")
+
+func Run(_ context.Context, cfg Config, w io.Writer, inputs ...Input) error {
+	data := Data{
+		Config: cfg,
+		imp:    pkg.NewImports(cfg.FullPkg()).Adds("fmt", "context", "gitoa.ru/go-4devs/config"),
+	}
+
+	var buff bytes.Buffer
+
+	for _, in := range inputs {
+		vi := view.NewViews(in.Method(), data.Params, in.Options(), view.WithKeys())
+
+		if err := render.Render(&buff, vi, data); err != nil {
+			return fmt.Errorf("render:%w", err)
+		}
+	}
+
+	if err := initTpl.Execute(w, data); err != nil {
+		return fmt.Errorf("render base:%w", err)
+	}
+
+	if _, err := io.Copy(w, &buff); err != nil {
+		return fmt.Errorf("copy:%w", err)
+	}
+
+	return nil
+}
+
+type Data struct {
+	Config
+
+	imp *pkg.Imports
+}
+
+func (f Data) Imports() []pkg.Import {
+	return f.imp.Imports()
+}
+
+func (f Data) StructName(name string) string {
+	return f.Prefix() + FuncName(name) + f.Suffix()
+}
+
+func (f Data) FuncName(in string) string {
+	return FuncName(in)
+}
+
+func (f Data) AddType(pkg string) (string, error) {
+	short, err := f.imp.AddType(pkg)
+	if err != nil {
+		return "", fmt.Errorf("data: %w", err)
+	}
+
+	return short, nil
+}
+
+func FuncName(name string) string {
+	data := strings.Builder{}
+	toUp := true
+
+	for _, char := range name {
+		isLeter := unicode.IsLetter(char)
+		isAllowed := isLeter || unicode.IsDigit(char)
+
+		switch {
+		case isAllowed && !toUp:
+			data.WriteRune(char)
+		case !isAllowed:
+			toUp = true
+		case toUp:
+			data.WriteString(strings.ToUpper(string(char)))
+
+			toUp = false
+		}
+	}
+
+	return data.String()
+}
+
+func NewInput(method string, options config.Options) Input {
+	return Input{
+		method:  method,
+		options: options,
+	}
+}
+
+type Input struct {
+	options config.Options
+	method  string
+}
+
+func (i Input) Method() string {
+	return i.method
+}
+
+func (i Input) Options() config.Options {
+	return i.options
+}

definition/generate/generate_test.go

@@ -0,0 +1,33 @@
+package generate_test
+
+import (
+	"gitoa.ru/go-4devs/config/definition"
+	"gitoa.ru/go-4devs/config/definition/generate/view"
+	"gitoa.ru/go-4devs/config/definition/group"
+	"gitoa.ru/go-4devs/config/definition/option"
+	"gitoa.ru/go-4devs/config/definition/proto"
+)
+
+type LogLevel string
+
+func (l *LogLevel) UnmarshalText(in []byte) error {
+	data := string(in)
+	*l = LogLevel(data)
+
+	return nil
+}
+
+func Configure(def *definition.Definition) {
+	def.Add(
+		option.String("test", "test string", view.WithSkipContext),
+		group.New("user", "configure user",
+			option.String("name", "name", option.Default("4devs")),
+			option.String("pass", "password"),
+		),
+
+		group.New("log", "configure logger",
+			option.New("level", "log level", LogLevel("")),
+			proto.New("service", "servise logger", option.New("level", "log level", LogLevel(""))),
+		),
+	)
+}

definition/generate/generator.go

@@ -1,70 +0,0 @@
-package generate
-
-import (
-	"fmt"
-	"io"
-
-	"gitoa.ru/go-4devs/config/definition"
-)
-
-type Generator struct {
-	pkg string
-	ViewOption
-	Imp           Imports
-	errs          []error
-	defaultErrors []string
-}
-
-func (g Generator) Pkg() string {
-	return g.pkg
-}
-
-func (g Generator) Imports() []Import {
-	return g.Imp.Imports()
-}
-
-func (g Generator) Handle(w io.Writer, data Handler, opt definition.Option) error {
-	handle := get(opt.Kind())
-
-	return handle(w, data, opt)
-}
-
-func (g Generator) StructName() string {
-	return FuncName(g.Prefix + "_" + g.Struct + "_" + g.Suffix)
-}
-
-func (g Generator) Options() ViewOption {
-	return g.ViewOption
-}
-
-func (g Generator) Keys() []string {
-	return nil
-}
-
-func (g Generator) DefaultErrors() []string {
-	if len(g.defaultErrors) > 0 {
-		return g.defaultErrors
-	}
-
-	if len(g.ViewOption.Errors.Default) > 0 {
-		g.Imp.Adds("errors")
-	}
-
-	g.defaultErrors = make([]string, len(g.ViewOption.Errors.Default))
-	for idx, name := range g.ViewOption.Errors.Default {
-		short, err := g.AddType(name)
-		if err != nil {
-			g.errs = append(g.errs, fmt.Errorf("add default error[%d]:%w", idx, err))
-
-			return nil
-		}
-
-		g.defaultErrors[idx] = short
-	}
-
-	return g.defaultErrors
-}
-
-func (g *Generator) AddType(pkg string) (string, error) {
-	return g.Imp.AddType(pkg)
-}

definition/generate/helpers.go

@@ -1,18 +0,0 @@
-package generate
-
-import (
-	"errors"
-
-	"github.com/iancoleman/strcase"
-)
-
-var (
-	ErrNotFound     = errors.New("not found")
-	ErrAlreadyExist = errors.New("already exist")
-	ErrWrongType    = errors.New("wrong type")
-	ErrWrongFormat  = errors.New("wrong format")
-)
-
-func FuncName(in string) string {
-	return strcase.ToCamel(in)
-}

definition/generate/pkg/alias.go

@@ -0,0 +1,29 @@
+package pkg
+
+import (
+	"strings"
+	"unicode"
+)
+
+func AliasName(name string) string {
+	data := strings.Builder{}
+	toUp := false
+
+	for _, char := range name {
+		isLeter := unicode.IsLetter(char)
+		isAllowed := isLeter || unicode.IsDigit(char)
+
+		switch {
+		case isAllowed && !toUp:
+			data.WriteRune(char)
+		case !isAllowed && data.Len() > 0:
+			toUp = true
+		case toUp:
+			data.WriteString(strings.ToUpper(string(char)))
+
+			toUp = false
+		}
+	}
+
+	return data.String()
+}

definition/generate/pkg/errors.go

@@ -0,0 +1,8 @@
+package pkg
+
+import "errors"
+
+var (
+	ErrWrongFormat = errors.New("wrong format")
+	ErrNotFound    = errors.New("not found")
+)

definition/generate/pkg/imports.go

@@ -1,4 +1,4 @@
-package generate
+package pkg
 
 import (
 	"fmt"
@@ -6,17 +6,21 @@ import (
 	"strings"
 )
 
-func NewImports() Imports {
-	return Imports{
+func NewImports(pkg string) *Imports {
+	imp := Imports{
 		data: make(map[string]string),
+		pkg:  pkg,
 	}
+
+	return &imp
 }
 
 type Imports struct {
 	data map[string]string
+	pkg  string
 }
 
-func (i Imports) Imports() []Import {
+func (i *Imports) Imports() []Import {
 	imports := make([]Import, 0, len(i.data))
 	for name, alias := range i.data {
 		imports = append(imports, Import{
@@ -44,25 +48,38 @@ func (i *Imports) Short(fullType string) (string, error) {
 func (i *Imports) AddType(fullType string) (string, error) {
 	idx := strings.LastIndexByte(fullType, '.')
 	if idx == -1 {
-		return "", fmt.Errorf("%w: expect pckage.Type", ErrWrongFormat)
+		return "", fmt.Errorf("%w: expect pckage.Type got %v", ErrWrongFormat, fullType)
 	}
 
 	imp := i.Add(fullType[:idx])
 
+	if imp.Alias == "" {
+		return fullType[idx+1:], nil
+	}
+
 	return imp.Alias + fullType[idx:], nil
 }
 
-func (i *Imports) Adds(pkgs ...string) {
+func (i *Imports) Adds(pkgs ...string) *Imports {
 	for _, pkg := range pkgs {
 		i.Add(pkg)
 	}
+
+	return i
 }
 
 func (i *Imports) Add(pkg string) Import {
+	if pkg == i.pkg {
+		return Import{
+			Alias:   "",
+			Package: pkg,
+		}
+	}
+
 	alias := pkg
 
 	if idx := strings.LastIndexByte(pkg, '/'); idx != -1 {
-		alias = pkg[idx+1:]
+		alias = AliasName(pkg[idx+1:])
 	}
 
 	if al, ok := i.data[pkg]; ok {

definition/generate/pkg/pkg.go

@@ -0,0 +1,187 @@
+package pkg
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"go/build"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+var cache = sync.Map{}
+
+func ByPath(ctx context.Context, fname string, isDir bool) (string, error) {
+	if !filepath.IsAbs(fname) {
+		pwd, err := os.Getwd()
+		if err != nil {
+			return "", fmt.Errorf("%w", err)
+		}
+
+		fname = filepath.Join(pwd, fname)
+	}
+
+	goModPath, _ := goModPath(ctx, fname, isDir)
+	if strings.Contains(goModPath, "go.mod") {
+		pkgPath, err := getPkgPathFromGoMod(fname, isDir, goModPath)
+		if err != nil {
+			return "", err
+		}
+
+		return pkgPath, nil
+	}
+
+	return getPkgPathFromGOPATH(fname, isDir)
+}
+
+// empty if no go.mod, GO111MODULE=off or go without go modules support.
+func goModPath(ctx context.Context, fname string, isDir bool) (string, error) {
+	root := fname
+	if !isDir {
+		root = filepath.Dir(fname)
+	}
+
+	var modPath string
+
+	loadModPath, ok := cache.Load(root)
+	if ok {
+		modPath, _ = loadModPath.(string)
+
+		return modPath, nil
+	}
+
+	defer func() {
+		cache.Store(root, modPath)
+	}()
+
+	cmd := exec.CommandContext(ctx, "go", "env", "GOMOD")
+	cmd.Dir = root
+
+	stdout, err := cmd.Output()
+	if err != nil {
+		return "", fmt.Errorf("%w", err)
+	}
+
+	modPath = string(bytes.TrimSpace(stdout))
+
+	return modPath, nil
+}
+
+func getPkgPathFromGoMod(fname string, isDir bool, goModPath string) (string, error) {
+	modulePath := getModulePath(goModPath)
+	if modulePath == "" {
+		return "", fmt.Errorf("c%w module path from %s", ErrNotFound, goModPath)
+	}
+
+	rel := path.Join(modulePath, filePathToPackagePath(strings.TrimPrefix(fname, filepath.Dir(goModPath))))
+
+	if !isDir {
+		return path.Dir(rel), nil
+	}
+
+	return path.Clean(rel), nil
+}
+
+func getModulePath(goModPath string) string {
+	var pkgPath string
+
+	cacheOkgPath, ok := cache.Load(goModPath)
+	if ok {
+		pkgPath, _ = cacheOkgPath.(string)
+
+		return pkgPath
+	}
+
+	defer func() {
+		cache.Store(goModPath, pkgPath)
+	}()
+
+	data, err := os.ReadFile(goModPath)
+	if err != nil {
+		return ""
+	}
+
+	pkgPath = modulePath(data)
+
+	return pkgPath
+}
+
+func getPkgPathFromGOPATH(fname string, isDir bool) (string, error) {
+	gopath := os.Getenv("GOPATH")
+	if gopath == "" {
+		gopath = build.Default.GOPATH
+	}
+
+	for _, p := range strings.Split(gopath, string(filepath.ListSeparator)) {
+		prefix := filepath.Join(p, "src") + string(filepath.Separator)
+
+		rel, err := filepath.Rel(prefix, fname)
+		if err == nil && !strings.HasPrefix(rel, ".."+string(filepath.Separator)) {
+			if !isDir {
+				return path.Dir(filePathToPackagePath(rel)), nil
+			}
+
+			return path.Clean(filePathToPackagePath(rel)), nil
+		}
+	}
+
+	return "", fmt.Errorf("%w: file '%v' is not in GOPATH '%v'", ErrNotFound, fname, gopath)
+}
+
+func filePathToPackagePath(path string) string {
+	return filepath.ToSlash(path)
+}
+
+var (
+	slashSlash = []byte("//")
+	moduleStr  = []byte("module")
+)
+
+// modulePath returns the module path from the gomod file text.
+// If it cannot find a module path, it returns an empty string.
+// It is tolerant of unrelated problems in the go.mod file.
+func modulePath(mod []byte) string {
+	for len(mod) > 0 {
+		line := mod
+
+		mod = nil
+		if i := bytes.IndexByte(line, '\n'); i >= 0 {
+			line, mod = line[:i], line[i+1:]
+		}
+
+		if i := bytes.Index(line, slashSlash); i >= 0 {
+			line = line[:i]
+		}
+
+		line = bytes.TrimSpace(line)
+		if !bytes.HasPrefix(line, moduleStr) {
+			continue
+		}
+
+		line = line[len(moduleStr):]
+		n := len(line)
+
+		line = bytes.TrimSpace(line)
+		if len(line) == n || len(line) == 0 {
+			continue
+		}
+
+		if line[0] == '"' || line[0] == '`' {
+			p, err := strconv.Unquote(string(line))
+			if err != nil {
+				return "" // malformed quoted string or multiline module path
+			}
+
+			return p
+		}
+
+		return string(line)
+	}
+
+	return "" // missing module path
+}

definition/generate/render/data.go

@@ -0,0 +1,61 @@
+package render
+
+import (
+	"gitoa.ru/go-4devs/config/definition/generate/pkg"
+	"gitoa.ru/go-4devs/config/definition/generate/view"
+)
+
+func NewViewData(render Rendering, view view.View) ViewData {
+	return ViewData{
+		Rendering: render,
+		View:      view,
+	}
+}
+
+type ViewData struct {
+	Rendering
+	view.View
+}
+
+func (d ViewData) StructName() string {
+	return d.Rendering.StructName(d.View.ParentName() + "_" + d.View.Name())
+}
+
+func (d ViewData) FuncName() string {
+	return d.Rendering.FuncName(d.View.FuncName())
+}
+
+func (d ViewData) ParentName() string {
+	name := d.View.ParentName()
+	if name == "" {
+		name = d.Name()
+	}
+
+	return d.Rendering.StructName(name)
+}
+
+func (d ViewData) Name() string {
+	return pkg.AliasName(d.View.Name())
+}
+
+func (d ViewData) Type() string {
+	return Type(d)
+}
+
+func (d ViewData) Keys(parent string) string {
+	return Keys(append(d.View.Keys(), d.Name()), parent)
+}
+
+func (d ViewData) Value(name, val string) string {
+	return Value(name, val, d)
+}
+
+func (d ViewData) Default(name string) string {
+	return Data(d.View.Default(), name, d)
+}
+
+type Rendering interface {
+	StructName(name string) string
+	FuncName(name string) string
+	AddType(pkg string) (string, error)
+}

definition/generate/render/errors.go

@@ -0,0 +1,5 @@
+package render
+
+import "errors"
+
+var ErrNotFound = errors.New("not found")

definition/generate/render/keys.go

@@ -0,0 +1,34 @@
+package render
+
+import (
+	"strings"
+
+	"gitoa.ru/go-4devs/config/definition/generate/pkg"
+	"gitoa.ru/go-4devs/config/key"
+)
+
+func Keys(keys []string, val string) string {
+	if len(keys) == 0 {
+		return ""
+	}
+
+	var out strings.Builder
+
+	for idx, one := range keys {
+		if key.IsWild(one) {
+			out.WriteString(val)
+			out.WriteString(".")
+			out.WriteString(pkg.AliasName(one))
+		} else {
+			out.WriteString("\"")
+			out.WriteString(one)
+			out.WriteString("\"")
+		}
+
+		if len(keys)-1 != idx {
+			out.WriteString(", ")
+		}
+	}
+
+	return out.String()
+}

definition/generate/render/render.go

@@ -0,0 +1,49 @@
+package render
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+
+	"gitoa.ru/go-4devs/config/definition"
+	"gitoa.ru/go-4devs/config/definition/generate/view"
+	"gitoa.ru/go-4devs/config/definition/group"
+	"gitoa.ru/go-4devs/config/definition/option"
+	"gitoa.ru/go-4devs/config/definition/proto"
+)
+
+type Execute func(w io.Writer, vi view.View, rnd Rendering) error
+
+var randders = map[reflect.Type]Execute{
+	reflect.TypeFor[*definition.Definition](): Template(defTpl),
+	reflect.TypeFor[group.Group]():            Template(groupTpl),
+	reflect.TypeFor[option.Option]():          Template(optTpl),
+	reflect.TypeFor[proto.Proto]():            Template(protoTpl),
+}
+
+func Renders() map[reflect.Type]Execute {
+	return randders
+}
+
+func Add(rt reflect.Type, fn Execute) {
+	randders[rt] = fn
+}
+
+func Render(w io.Writer, view view.View, data Rendering) error {
+	rnd, ok := randders[view.Kind()]
+	if !ok {
+		return fmt.Errorf("%w:%v", ErrNotFound, view.Kind())
+	}
+
+	if err := rnd(w, view, data); err != nil {
+		return fmt.Errorf("render:%v, err:%w", view.Kind(), err)
+	}
+
+	for _, ch := range view.Views() {
+		if err := Render(w, ch, data); err != nil {
+			return fmt.Errorf("render[%v]:%w", ch.Name(), err)
+		}
+	}
+
+	return nil
+}

definition/generate/render/tpl.go

@@ -0,0 +1,41 @@
+package render
+
+import (
+	"embed"
+	"fmt"
+	"io"
+	"strings"
+	"text/template"
+
+	"gitoa.ru/go-4devs/config/definition/generate/view"
+)
+
+//go:embed tpl/*
+var tplFS embed.FS
+
+var (
+	tpls = template.Must(
+		template.New("tpls").
+			Funcs(template.FuncMap{
+				"trim": strings.Trim,
+			}).
+			ParseFS(tplFS, "tpl/*.go.tpl"),
+	)
+	defTpl   = tpls.Lookup("definition.go.tpl")
+	groupTpl = tpls.Lookup("group.go.tpl")
+	protoTpl = tpls.Lookup("proto.go.tpl")
+	optTpl   = template.Must(
+		template.New("opt").ParseFS(tplFS, "tpl/option/option.go.tpl"),
+	).Lookup("option.go.tpl")
+	parceTpls = template.Must(template.New("data").ParseFS(tplFS, "tpl/data/*.go.tpl"))
+)
+
+func Template(tpl *template.Template) Execute {
+	return func(w io.Writer, v view.View, rnd Rendering) error {
+		if err := tpl.Execute(w, NewViewData(rnd, v)); err != nil {
+			return fmt.Errorf("template[%v]:%w", tpl.Name(), err)
+		}
+
+		return nil
+	}
+}

definition/generate/render/tpl/data/any.go.tpl

@@ -0,0 +1,3 @@
+{{block "Any" . }}
+	return {{.ValName}}.Any(), nil
+{{end}}

definition/generate/render/tpl/data/flag_value.go.tpl

@@ -0,0 +1,8 @@
+{{ block "FlagValue" . -}}
+    pval, perr := {{.ValName}}.ParseString()
+    if perr != nil {
+        return {{.Value}}, fmt.Errorf("read [%v]:%w",[]string{ {{- .Keys "i" -}} }, perr)
+    }
+
+    return {{.Value}}, {{.Value}}.Set(pval)
+{{- end }}

definition/generate/render/tpl/data/scan_value.go.tpl

@@ -0,0 +1,3 @@
+{{ block "ScanValue" . -}}
+    return {{.Value}}, {{.Value}}.Scan({{.ValName}}.Any())
+{{- end }}

definition/generate/render/tpl/data/unmarshal_json.go.tpl

@@ -0,0 +1,8 @@
+{{block "UnmarshalJSON" . -}}
+    pval, perr := {{.ValName}}.ParseString()
+    if perr != nil {
+	    return {{.Value}}, fmt.Errorf("read [%v]:%w", []string{ {{- .Keys "i" -}} }, perr)
+    }
+
+    return {{.Value}}, {{.Value}}.UnmarshalJSON([]byte(pval))
+{{- end }}

definition/generate/render/tpl/data/unmarshal_text.go.tpl

@@ -0,0 +1,8 @@
+{{ block "UnmarshalText" . -}}
+    pval, perr := {{.ValName}}.ParseString()
+    if perr != nil {
+        return {{.Value}}, fmt.Errorf("read [%v]:%w", []string{ {{- .Keys "i" -}} }, perr)
+    }
+
+    return {{.Value}}, {{.Value}}.UnmarshalText([]byte(pval))
+{{- end }}

definition/generate/render/tpl/definition.go.tpl

@@ -1,19 +1,3 @@
-package generate
-
-import "text/template"
-
-//nolint:gochecknoglobals
-var (
-	tpl          = template.Must(template.New("tpls").Parse(baseTemplate))
-	baseTemplate = `// Code generated gitoa.ru/go-4devs/config DO NOT EDIT.
-package {{.Pkg}}
-
-import (
-    {{range .Imports}}
-    {{- .Alias }}"{{ .Package }}"
-    {{end}}
-)
-
 func With{{.StructName}}Log(log func(context.Context, string, ...any)) func(*{{.StructName}}) {
 	return func(ci *{{.StructName}}) {
 		ci.log = log
@@ -39,5 +23,3 @@ type {{.StructName}} struct {
 	config.Provider
 	log   func(context.Context, string, ...any)
 }
-`
-)

definition/generate/render/tpl/group.go.tpl

@@ -0,0 +1,8 @@
+type {{.StructName}} struct {
+    {{.ParentName}}
+}
+
+// {{.FuncName}} {{.Description}}.
+func (i {{.ParentName}}) {{.FuncName}}() {{.StructName}} {
+	return {{.StructName}}{i}
+}

definition/generate/render/tpl/option/option.go.tpl

@@ -0,0 +1,30 @@
+// read{{.FuncName}} {{.Description}}.
+func (i {{.ParentName}}) read{{.FuncName}}(ctx context.Context) (v {{.Type}},e error) {
+	val, err := i.Value(ctx, {{ .Keys "i" }})
+	if err != nil {
+        {{- if .HasDefault }}
+        i.log({{ if not .SkipContext }}context.Background(){{else}}ctx{{ end }}, "read [%v]: %v",[]string{ {{- .Keys "i" -}} }, err)
+        
+        {{ .Default "val" -}}
+        {{ else }}
+        return v, fmt.Errorf("read [%v]:%w",[]string{ {{- .Keys "i" -}} }, err)
+        {{ end }}
+	}
+
+	{{ .Value "val" "v" }}
+}
+
+// Read{{.FuncName}} {{.Description}}.
+func (i {{.ParentName}}) Read{{.FuncName}}({{if not .SkipContext}} ctx context.Context {{end}}) ({{.Type}}, error) {
+    return i.read{{.FuncName}}({{if .SkipContext}}context.Background(){{else}}ctx{{end}})
+}
+
+// {{.FuncName}} {{.Description}}.
+func (i {{.ParentName}}) {{.FuncName}}({{if not .SkipContext}} ctx context.Context {{end}}) {{.Type}} {
+    val, err := i.read{{.FuncName}}({{ if .SkipContext }}context.Background(){{else}}ctx{{ end }})
+	if err != nil {
+		i.log({{ if .SkipContext }}context.Background(){{else}}ctx{{ end }}, "get [%v]: %v",[]string{ {{- .Keys "i" -}} }, err)
+	}
+
+	return val
+}

definition/generate/render/tpl/proto.go.tpl

@@ -0,0 +1,9 @@
+type {{.StructName}} struct {
+    {{.ParentName}}
+    {{ .Name }} string
+}
+
+// {{.FuncName}} {{.Description}}.
+func (i {{.ParentName}}) {{.FuncName}}(key string) {{.StructName}} {
+	return {{.StructName}}{i,key}
+}

definition/generate/render/value.go

@@ -0,0 +1,266 @@
+package render
+
+import (
+	"bytes"
+	"database/sql"
+	"encoding"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"reflect"
+	"time"
+)
+
+func Value(name, val string, data ViewData) string {
+	rnd := renderType(data)
+
+	res, err := rnd(ValueData{ValName: name, Value: val, ViewData: data})
+	if err != nil {
+		return fmt.Sprintf("render value:%v", err)
+	}
+
+	return res
+}
+
+func Type(data ViewData) string {
+	dt := data.View.Type()
+	rtype := reflect.TypeOf(dt)
+
+	slice := ""
+	if rtype.Kind() == reflect.Slice {
+		slice = "[]"
+		rtype = rtype.Elem()
+	}
+
+	short := rtype.Name()
+
+	if rtype.PkgPath() != "" {
+		var err error
+
+		short, err = data.AddType(rtype.PkgPath() + "." + rtype.Name())
+		if err != nil {
+			return err.Error()
+		}
+	}
+
+	return slice + short
+}
+
+func Data(val any, name string, view ViewData) string {
+	fn := renderData(view)
+
+	data, err := fn(val, ValueData{ValName: name, Value: "", ViewData: view})
+	if err != nil {
+		return fmt.Sprintf("render dara:%v", err)
+	}
+
+	return data
+}
+
+func renderDataTime(val any, _ ValueData) (string, error) {
+	data, _ := val.(time.Time)
+
+	return fmt.Sprintf("time.Parse(%q,time.RFC3339Nano)", data.Format(time.RFC3339Nano)), nil
+}
+
+func renderDataDuration(val any, _ ValueData) (string, error) {
+	data, _ := val.(time.Duration)
+
+	return fmt.Sprintf("time.ParseDuration(%q)", data), nil
+}
+
+func renderDataUnmarhal(val any, view ValueData) (string, error) {
+	res, err := json.Marshal(val)
+	if err != nil {
+		return "", fmt.Errorf("render data unmarshal:%w", err)
+	}
+
+	return fmt.Sprintf("return {{.%[1]s}}, {{.%[1]s}}.UnmarshalJSON(%q)", view.ValName, res), nil
+}
+
+func renderDataUnmarhalText(val any, view ValueData) (string, error) {
+	res, err := json.Marshal(val)
+	if err != nil {
+		return "", fmt.Errorf("render data unmarshal:%w", err)
+	}
+
+	return fmt.Sprintf("return {{.%[1]s}}, {{.%[1]s}}.UnmarshalText(%s)", view.ValName, res), nil
+}
+
+func renderDataFlag(val any, view ValueData) (string, error) {
+	return fmt.Sprintf("return {{.%[1]s}}, {{.%[1]s}}.Set(%[2]q)", view.ValName, val), nil
+}
+
+func renderType(view ViewData) func(data ValueData) (string, error) {
+	return dataRender(view).Type
+}
+
+func renderData(view ViewData) func(in any, data ValueData) (string, error) {
+	return dataRender(view).Value
+}
+
+func dataRender(view ViewData) DataRender {
+	data := view.View.Type()
+	vtype := reflect.TypeOf(data)
+
+	if vtype.Kind() == reflect.Slice {
+		return render[reflect.TypeFor[json.Unmarshaler]()]
+	}
+
+	if h, ok := render[vtype]; ok {
+		return h
+	}
+
+	if vtype.Kind() != reflect.Interface && vtype.Kind() != reflect.Ptr {
+		vtype = reflect.PointerTo(vtype)
+	}
+
+	for extypes := range render {
+		if extypes == nil || extypes.Kind() != reflect.Interface {
+			continue
+		}
+
+		if vtype.Implements(extypes) {
+			return render[extypes]
+		}
+	}
+
+	return render[reflect.TypeOf((any)(nil))]
+}
+
+//nolint:gochecknoglobals
+var render = map[reflect.Type]DataRender{
+	reflect.TypeFor[encoding.TextUnmarshaler](): NewDataRender(unmarshalTextType, renderDataUnmarhalText),
+	reflect.TypeFor[json.Unmarshaler]():         NewDataRender(unmarshalType, renderDataUnmarhal),
+	reflect.TypeFor[flag.Value]():               NewDataRender(flagType, renderDataFlag),
+	reflect.TypeFor[sql.Scanner]():              NewDataRender(scanType, nil),
+	reflect.TypeFor[int]():                      NewDataRender(internalType, nil),
+	reflect.TypeFor[int64]():                    NewDataRender(internalType, anyValue),
+	reflect.TypeFor[bool]():                     NewDataRender(internalType, anyValue),
+	reflect.TypeFor[string]():                   NewDataRender(internalType, anyValue),
+	reflect.TypeFor[float64]():                  NewDataRender(internalType, anyValue),
+	reflect.TypeFor[uint]():                     NewDataRender(internalType, anyValue),
+	reflect.TypeFor[int64]():                    NewDataRender(internalType, anyValue),
+	reflect.TypeFor[time.Duration]():            NewDataRender(durationType, renderDataDuration),
+	reflect.TypeFor[time.Time]():                NewDataRender(timeType, renderDataTime),
+	reflect.TypeOf((any)(nil)):                  NewDataRender(anyType, anyValue),
+}
+
+func timeType(data ValueData) (string, error) {
+	return fmt.Sprintf("return %s.ParseTime()", data.ValName), nil
+}
+
+func durationType(data ValueData) (string, error) {
+	return fmt.Sprintf("return %s.ParseDuration()", data.ValName), nil
+}
+
+func scanType(data ValueData) (string, error) {
+	var b bytes.Buffer
+
+	err := parceTpls.Lookup("scan_value.go.tpl").Execute(&b, data)
+	if err != nil {
+		return "", fmt.Errorf("execute scan value:%w", err)
+	}
+
+	return b.String(), nil
+}
+
+func flagType(data ValueData) (string, error) {
+	var b bytes.Buffer
+
+	err := parceTpls.Lookup("flag_value.go.tpl").Execute(&b, data)
+	if err != nil {
+		return "", fmt.Errorf("execute flag value:%w", err)
+	}
+
+	return b.String(), nil
+}
+
+func anyType(data ValueData) (string, error) {
+	var b bytes.Buffer
+
+	err := parceTpls.ExecuteTemplate(&b, "any.go.tpl", data)
+	if err != nil {
+		return "", fmt.Errorf("unmarshal execute any.go.tpl:%w", err)
+	}
+
+	return b.String(), nil
+}
+
+func anyValue(data any, _ ValueData) (string, error) {
+	return fmt.Sprintf("return %#v, nil", data), nil
+}
+
+func unmarshalType(data ValueData) (string, error) {
+	var b bytes.Buffer
+
+	err := parceTpls.ExecuteTemplate(&b, "unmarshal_json.go.tpl", data)
+	if err != nil {
+		return "", fmt.Errorf("unmarshal execute unmarshal_json.go.tpl:%w", err)
+	}
+
+	return b.String(), nil
+}
+
+func unmarshalTextType(data ValueData) (string, error) {
+	var b bytes.Buffer
+
+	err := parceTpls.Lookup("unmarshal_text.go.tpl").Execute(&b, data)
+	if err != nil {
+		return "", fmt.Errorf("execute unmarshal text:%w", err)
+	}
+
+	return b.String(), nil
+}
+
+func internalType(data ValueData) (string, error) {
+	var b bytes.Buffer
+
+	err := parceTpls.Lookup("parse.go.tpl").Execute(&b, data)
+	if err != nil {
+		return "", fmt.Errorf("internal execute parce.go.tpl:%w", err)
+	}
+
+	return b.String(), nil
+}
+
+type ValueData struct {
+	ViewData
+
+	ValName string
+	Value   string
+}
+
+func (v ValueData) FuncType() string {
+	name := reflect.TypeOf(v.ViewData.Type()).Name()
+
+	return v.Rendering.FuncName(name)
+}
+
+type DataRender struct {
+	renderType  func(data ValueData) (string, error)
+	renderValue func(data any, view ValueData) (string, error)
+}
+
+func (d DataRender) Type(data ValueData) (string, error) {
+	return d.renderType(data)
+}
+
+func (d DataRender) Value(data any, view ValueData) (string, error) {
+	return d.renderValue(data, view)
+}
+
+func NewDataRender(rendeType func(data ValueData) (string, error), renderValue func(data any, view ValueData) (string, error)) DataRender {
+	if rendeType == nil {
+		rendeType = anyType
+	}
+
+	if renderValue == nil {
+		renderValue = anyValue
+	}
+
+	return DataRender{
+		renderType:  rendeType,
+		renderValue: renderValue,
+	}
+}

definition/generate/render/value_test.go

@@ -0,0 +1,129 @@
+package render_test
+
+import (
+	"fmt"
+	"strconv"
+	"testing"
+
+	"gitoa.ru/go-4devs/config/definition/generate/render"
+	"gitoa.ru/go-4devs/config/definition/generate/view"
+	"gitoa.ru/go-4devs/config/definition/option"
+)
+
+type flagValue int
+
+func (f flagValue) String() string {
+	return strconv.Itoa(int(f))
+}
+
+func (f *flagValue) Set(in string) error {
+	data, err := strconv.Atoi(in)
+	if err != nil {
+		return fmt.Errorf("%w", err)
+	}
+
+	*f = flagValue(data)
+
+	return nil
+}
+
+func TestValue_FlagType(t *testing.T) {
+	t.Parallel()
+
+	const ex = `pval, perr := val.ParseString()
+    if perr != nil {
+        return v, fmt.Errorf("read [%v]:%w",[]string{"flagValue"}, perr)
+    }
+
+    return v, v.Set(pval)`
+
+	viewData := render.NewViewData(nil, view.NewView(option.New("flag_value", "flag desc", flagValue(0)), nil))
+	result := render.Value("val", "v", viewData)
+
+	if result != ex {
+		t.Errorf("failed render flag type ex:%s, res:%s", ex, result)
+	}
+}
+
+func TestData_Flag(t *testing.T) {
+	t.Parallel()
+
+	const ex = `return {{.val}}, {{.val}}.Set("42")`
+
+	viewData := render.NewViewData(nil, view.NewView(option.New("flag_value", "flag desc", flagValue(0)), nil))
+	result := render.Data(flagValue(42), "val", viewData)
+
+	if result != ex {
+		t.Errorf("failed render flag value ex:%s, res:%s", ex, result)
+	}
+}
+
+type scanValue int
+
+func (s *scanValue) Scan(src any) error {
+	res, _ := src.(string)
+
+	data, err := strconv.Atoi(res)
+	if err != nil {
+		return fmt.Errorf("%w", err)
+	}
+
+	*s = scanValue(data)
+
+	return nil
+}
+
+func TestValue_Scan(t *testing.T) {
+	t.Parallel()
+
+	const ex = `return v, v.Scan(val.Any())`
+
+	viewData := render.NewViewData(nil, view.NewView(option.New("scan_value", "scan desc", scanValue(42)), nil))
+	result := render.Value("val", "v", viewData)
+
+	if result != ex {
+		t.Errorf("failed render flag value ex:%s, res:%s", ex, result)
+	}
+}
+
+type textData string
+
+func (j *textData) UnmarshalText(in []byte) error {
+	val := string(in)
+
+	*j = textData(val)
+
+	return nil
+}
+
+func TestData_UnmarshalText(t *testing.T) {
+	t.Parallel()
+
+	const ex = `return {{.val}}, {{.val}}.UnmarshalText("4devs")`
+
+	data := textData("4devs")
+	viewData := render.NewViewData(nil, view.NewView(option.New("tvalue", "unmarshal text desc", textData("")), nil))
+	result := render.Data(data, "val", viewData)
+
+	if result != ex {
+		t.Errorf("failed render flag value ex:%s, res:%s", ex, result)
+	}
+}
+
+func TestValue_UnmarshalText(t *testing.T) {
+	t.Parallel()
+
+	const ex = `pval, perr := val.ParseString()
+    if perr != nil {
+        return v, fmt.Errorf("read [%v]:%w", []string{"tvalue"}, perr)
+    }
+
+    return v, v.UnmarshalText([]byte(pval))`
+
+	viewData := render.NewViewData(nil, view.NewView(option.New("tvalue", "unmarshal text desc", textData("")), nil))
+	result := render.Value("val", "v", viewData)
+
+	if result != ex {
+		t.Errorf("failed render flag value ex:%s, res:%s", ex, result)
+	}
+}

definition/generate/run.go

@@ -1,39 +0,0 @@
-package generate
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-
-	"gitoa.ru/go-4devs/config/definition"
-)
-
-func Run(w io.Writer, pkgName string, defs definition.Definition, viewOpt ViewOption) error {
-	gen := Generator{
-		pkg:        pkgName,
-		ViewOption: viewOpt,
-		Imp:        NewImports(),
-	}
-
-	gen.Imp.Adds("gitoa.ru/go-4devs/config", "fmt", "context")
-
-	var view bytes.Buffer
-
-	err := defs.View(func(o definition.Option) error {
-		return gen.Handle(&view, &gen, o)
-	})
-	if err != nil {
-		return fmt.Errorf("render options:%w", err)
-	}
-
-	if err := tpl.Execute(w, gen); err != nil {
-		return fmt.Errorf("render base:%w", err)
-	}
-
-	_, cerr := io.Copy(w, &view)
-	if cerr != nil {
-		return fmt.Errorf("copy error:%w", cerr)
-	}
-
-	return nil
-}

definition/generate/tpl/init.go.tpl

@@ -0,0 +1,8 @@
+// Code generated gitoa.ru/go-4devs/config DO NOT EDIT.
+package {{.Pkg}}
+
+import (
+    {{range .Imports}}
+    {{- .Alias }} "{{ .Package }}"
+    {{end}}
+)

definition/generate/view.go

@@ -1,63 +0,0 @@
-package generate
-
-import (
-	"fmt"
-	"io"
-	"sync"
-
-	"gitoa.ru/go-4devs/config/definition"
-)
-
-//nolint:gochecknoglobals
-var handlers = sync.Map{}
-
-func Add(kind string, h Handle) error {
-	_, ok := handlers.Load(kind)
-	if ok {
-		return fmt.Errorf("kind %v: %w", kind, ErrAlreadyExist)
-	}
-
-	handlers.Store(kind, h)
-
-	return nil
-}
-
-//nolint:forcetypeassert
-func get(kind string) Handle {
-	handler, ok := handlers.Load(kind)
-	if !ok {
-		return func(w io.Writer, h Handler, o definition.Option) error {
-			return fmt.Errorf("handler by %v:%w", kind, ErrNotFound)
-		}
-	}
-
-	return handler.(Handle)
-}
-
-func MustAdd(kind string, h Handle) {
-	if err := Add(kind, h); err != nil {
-		panic(err)
-	}
-}
-
-type Handle func(io.Writer, Handler, definition.Option) error
-
-type Handler interface {
-	StructName() string
-	Handle(w io.Writer, handler Handler, opt definition.Option) error
-	Options() ViewOption
-	Keys() []string
-	AddType(fullName string) (string, error)
-	DefaultErrors() []string
-}
-
-type ViewOption struct {
-	Prefix, Suffix string
-	Context        bool
-	Struct         string
-	Errors         ViewErrors
-}
-
-type ViewErrors struct {
-	Default []string
-}

definition/generate/view/view.go

@@ -0,0 +1,191 @@
+package view
+
+import (
+	"fmt"
+	"reflect"
+
+	"gitoa.ru/go-4devs/config"
+	"gitoa.ru/go-4devs/config/definition/option"
+	"gitoa.ru/go-4devs/config/param"
+)
+
+type key int
+
+const (
+	viewParamFunctName key = iota + 1
+	viewParamSkipContext
+)
+
+func WithSkipContext(p param.Params) param.Params {
+	return param.With(p, viewParamSkipContext, true)
+}
+
+func WithContext(p param.Params) param.Params {
+	return param.With(p, viewParamSkipContext, false)
+}
+
+func IsSkipContext(p param.Params) bool {
+	data, has := p.Param(viewParamSkipContext)
+
+	if has {
+		skip, ok := data.(bool)
+
+		return ok && skip
+	}
+
+	return false
+}
+
+type Option func(*View)
+
+func WithParent(name string) Option {
+	return func(v *View) {
+		v.parent = name
+	}
+}
+
+func WithKeys(keys ...string) Option {
+	return func(v *View) {
+		v.keys = keys
+	}
+}
+
+func NewViews(name string, get param.Params, option config.Options, opts ...Option) View {
+	view := newView(name, get, option, opts...)
+
+	for _, op := range option.Options() {
+		view.children = append(view.children, NewView(op, get, WithParent(name)))
+	}
+
+	return view
+}
+
+type IOption any
+
+func newView(name string, get param.Params, in any, opts ...Option) View {
+	vi := View{
+		kind:     reflect.TypeOf(in),
+		name:     name,
+		Params:   get,
+		dtype:    param.Type(get),
+		children: nil,
+		keys:     nil,
+		parent:   "",
+	}
+
+	for _, opt := range opts {
+		opt(&vi)
+	}
+
+	return vi
+}
+
+func NewView(opt config.Option, get param.Params, opts ...Option) View {
+	vi := newView(opt.Name(), param.Chain(get, opt), opt, opts...)
+
+	if data, ok := opt.(config.Group); ok {
+		for _, chi := range data.Options() {
+			vi.children = append(vi.children, NewView(
+				chi,
+				param.Chain(vi.Params, chi),
+				WithParent(vi.ParentName()+"_"+opt.Name()),
+				WithKeys(append(vi.keys, opt.Name())...),
+			))
+		}
+	}
+
+	return vi
+}
+
+type View struct {
+	param.Params
+
+	children []View
+	keys     []string
+	kind     reflect.Type
+	name     string
+	parent   string
+	dtype    any
+}
+
+func (v View) Types() []any {
+	types := make([]any, 0)
+	if v.dtype != nil {
+		types = append(types, v.dtype)
+	}
+
+	for _, child := range v.children {
+		types = append(types, child.Types()...)
+	}
+
+	return types
+}
+
+func (v View) Kind() reflect.Type {
+	return v.kind
+}
+
+func (v View) Views() []View {
+	return v.children
+}
+
+func (v View) Param(key any) string {
+	data, ok := v.Params.Param(key)
+	if !ok {
+		return ""
+	}
+
+	if res, ok := data.(string); ok {
+		return res
+	}
+
+	return fmt.Sprintf("%v", data)
+}
+
+func (v View) SkipContext() bool {
+	return IsSkipContext(v.Params)
+}
+
+func (v View) Name() string {
+	return v.name
+}
+
+func (v View) Keys() []string {
+	return v.keys
+}
+
+func (v View) Type() any {
+	return v.dtype
+}
+
+func (v View) FuncName() string {
+	data, ok := v.Params.Param(viewParamFunctName)
+	name, valid := data.(string)
+
+	if !ok || !valid {
+		return v.name
+	}
+
+	return name
+}
+
+func (v View) ParentName() string {
+	return v.parent
+}
+
+func (v View) Description() string {
+	return option.DataDescription(v.Params)
+}
+
+func (v View) Default() any {
+	data, ok := option.DataDefaut(v.Params)
+	if !ok {
+		return nil
+	}
+
+	return data
+}
+
+func (v View) HasDefault() bool {
+	return option.HasDefaut(v.Params)
+}

definition/go.mod

@@ -1,5 +0,0 @@
-module gitoa.ru/go-4devs/config/definition
-
-go 1.21
-
-require github.com/iancoleman/strcase v0.3.0

definition/go.sum

@@ -1,2 +0,0 @@
-github.com/iancoleman/strcase v0.3.0 h1:nTXanmYxhfFAMjZL34Ov6gkzEsSJZ5DbhxWjvSASxEI=
-github.com/iancoleman/strcase v0.3.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=

definition/group/group.go

@@ -1,27 +1,34 @@
 package group
 
 import (
-	"gitoa.ru/go-4devs/config/definition"
+	"gitoa.ru/go-4devs/config"
+	"gitoa.ru/go-4devs/config/definition/option"
+	"gitoa.ru/go-4devs/config/param"
 )
 
-const Kind = "group"
+var _ config.Group = New("", "")
 
-var _ definition.Option = Group{}
-
-func New(name, desc string, opts ...definition.Option) Group {
-	return Group{
-		Name:        name,
-		Description: desc,
-		Options:     opts,
+func New(name, desc string, opts ...config.Option) Group {
+	group := Group{
+		name:   name,
+		opts:   opts,
+		Params: param.New(option.Description(desc)),
 	}
+
+	return group
 }
 
 type Group struct {
-	Options     definition.Options
-	Name        string
-	Description string
+	param.Params
+
+	name string
+	opts []config.Option
 }
 
-func (o Group) Kind() string {
-	return Kind
+func (g Group) Name() string {
+	return g.name
+}
+
+func (g Group) Options() []config.Option {
+	return g.opts
 }

definition/group/view.go

@@ -1,88 +0,0 @@
-package group
-
-import (
-	"fmt"
-	"io"
-	"text/template"
-
-	"gitoa.ru/go-4devs/config/definition"
-	"gitoa.ru/go-4devs/config/definition/generate"
-)
-
-//nolint:gochecknoinits
-func init() {
-	generate.MustAdd(Kind, handle)
-}
-
-func handle(w io.Writer, data generate.Handler, option definition.Option) error {
-	group, ok := option.(Group)
-	if !ok {
-		return fmt.Errorf("%w:%T", generate.ErrWrongType, option)
-	}
-
-	viewData := View{
-		Group:      group,
-		ParentName: data.StructName(),
-		ViewOption: data.Options(),
-	}
-
-	err := tpl.Execute(w, viewData)
-	if err != nil {
-		return fmt.Errorf("render group:%w", err)
-	}
-
-	childData := ChildData{
-		Handler:    data,
-		structName: viewData.StructName(),
-		keys:       append(data.Keys(), group.Name),
-	}
-	for idx, child := range group.Options {
-		if cerr := data.Handle(w, childData, child); cerr != nil {
-			return fmt.Errorf("render group child[%d]:%w", idx, cerr)
-		}
-	}
-
-	return nil
-}
-
-type ChildData struct {
-	generate.Handler
-	structName string
-	keys       []string
-}
-
-func (c ChildData) StructName() string {
-	return c.structName
-}
-
-func (c ChildData) Keys() []string {
-	return c.keys
-}
-
-type View struct {
-	Group
-	ParentName string
-	generate.ViewOption
-}
-
-func (v View) FuncName() string {
-	return generate.FuncName(v.Name)
-}
-
-func (v View) StructName() string {
-	return generate.FuncName(v.Prefix + v.Name + v.Suffix)
-}
-
-//nolint:gochecknoglobals
-var (
-	tpl           = template.Must(template.New("tpls").Parse(gpoupTemplate))
-	gpoupTemplate = `type {{.StructName}} struct {
-    {{.ParentName}}
-}
-
-// {{.FuncName}} {{.Description}}.
-func (i {{.ParentName}}) {{.FuncName}}() {{.StructName}} {
-	return {{.StructName}}{i}
-}
-`
-)

definition/option.go

@@ -1,27 +0,0 @@
-package definition
-
-type Option interface {
-	Kind() string
-}
-
-type Options []Option
-
-func (s Options) Len() int      { return len(s) }
-func (s Options) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
-
-type Params []Param
-
-func (p Params) Get(name string) (any, bool) {
-	for _, param := range p {
-		if param.Name == name {
-			return param.Value, true
-		}
-	}
-
-	return nil, false
-}
-
-type Param struct {
-	Name  string
-	Value any
-}

definition/option/errors.go

@@ -0,0 +1,30 @@
+package option
+
+import (
+	"errors"
+	"fmt"
+)
+
+type Error struct {
+	Key []string
+	Err error
+}
+
+func (o Error) Error() string {
+	return fmt.Sprintf("%s: %s", o.Key, o.Err)
+}
+
+func (o Error) Is(err error) bool {
+	return errors.Is(err, o.Err)
+}
+
+func (o Error) Unwrap() error {
+	return o.Err
+}
+
+func Err(err error, key []string) Error {
+	return Error{
+		Key: key,
+		Err: err,
+	}
+}

definition/option/option.go

@@ -1,100 +1,66 @@
 package option
 
 import (
-	"gitoa.ru/go-4devs/config/definition"
+	"time"
+
+	"gitoa.ru/go-4devs/config"
+	"gitoa.ru/go-4devs/config/param"
 )
 
-var _ definition.Option = Option{}
+var _ config.Option = New("", "", nil)
 
-const (
-	Kind = "option"
-)
-
-const (
-	TypeString   = "string"
-	TypeInt      = "int"
-	TypeInt64    = "int64"
-	TypeUint     = "uint"
-	TypeUint64   = "uint64"
-	TypeFloat64  = "float64"
-	TypeBool     = "bool"
-	TypeTime     = "time.Time"
-	TypeDuration = "time.Duration"
-)
-
-func Default(v any) func(*Option) {
-	return func(o *Option) {
-		o.Default = v
-	}
-}
-
-func New(name, desc string, vtype any, opts ...func(*Option)) Option {
-	option := Option{
-		Name:        name,
-		Description: desc,
-		Type:        vtype,
+func New(name, desc string, vtype any, opts ...param.Option) Option {
+	opts = append(opts, Description(desc), WithType(vtype))
+	res := Option{
+		name:   name,
+		Params: param.New(opts...),
 	}
 
-	for _, opt := range opts {
-		opt(&option)
-	}
-
-	return option
+	return res
 }
 
 type Option struct {
-	Name        string
-	Description string
-	Type        any
-	Default     any
-	Params      definition.Params
+	param.Params
+
+	name string
 }
 
-func (o Option) WithParams(params ...definition.Param) Option {
-	return Option{
-		Name:        o.Name,
-		Description: o.Description,
-		Type:        o.Type,
-		Params:      append(params, o.Params...),
-	}
+func (o Option) Name() string {
+	return o.name
 }
 
-func (o Option) Kind() string {
-	return Kind
+func String(name, description string, opts ...param.Option) Option {
+	return New(name, description, "", opts...)
 }
 
-func Time(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeTime, opts...)
+func Bool(name, description string, opts ...param.Option) Option {
+	return New(name, description, false, opts...)
 }
 
-func Duration(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeDuration, opts...)
+func Duration(name, description string, opts ...param.Option) Option {
+	return New(name, description, time.Duration(0), opts...)
 }
 
-func String(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeString, opts...)
+func Float64(name, description string, opts ...param.Option) Option {
+	return New(name, description, float64(0), opts...)
 }
 
-func Int(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeInt, opts...)
+func Int(name, description string, opts ...param.Option) Option {
+	return New(name, description, int(0), opts...)
 }
 
-func Int64(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeInt64, opts...)
+func Int64(name, description string, opts ...param.Option) Option {
+	return New(name, description, int64(0), opts...)
 }
 
-func Uint(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeUint, opts...)
+func Time(name, description string, opts ...param.Option) Option {
+	return New(name, description, time.Time{}, opts...)
 }
 
-func Uint64(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeUint64, opts...)
+func Uint(name, description string, opts ...param.Option) Option {
+	return New(name, description, uint(0), opts...)
 }
 
-func Float64(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeFloat64, opts...)
-}
-
-func Bool(name, desc string, opts ...func(*Option)) Option {
-	return New(name, desc, TypeBool, opts...)
+func Uint64(name, descriontion string, opts ...param.Option) Option {
+	return New(name, descriontion, uint64(0), opts...)
 }

definition/option/params.go

@@ -0,0 +1,125 @@
+package option
+
+import (
+	"gitoa.ru/go-4devs/config/param"
+)
+
+type key int
+
+const (
+	paramHidden key = iota + 1
+	paramDefault
+	paramDesc
+	paramRequired
+	paramSlice
+	paramBool
+	paramPos
+	paramShort
+)
+
+func Short(in rune) param.Option {
+	return func(v param.Params) param.Params {
+		return param.With(v, paramShort, string(in))
+	}
+}
+
+func ParamShort(fn param.Params) (string, bool) {
+	data, ok := param.String(fn, paramShort)
+
+	return data, ok
+}
+
+func HasShort(short string) param.Has {
+	return func(fn param.Params) bool {
+		data, ok := param.String(fn, paramShort)
+
+		return ok && data == short
+	}
+}
+
+func WithType(in any) param.Option {
+	return func(v param.Params) param.Params {
+		out := param.WithType(in)(v)
+		if _, ok := in.(bool); ok {
+			return param.With(out, paramBool, ok)
+		}
+
+		return out
+	}
+}
+
+func Position(pos uint64) param.Option {
+	return func(p param.Params) param.Params {
+		return param.With(p, paramPos, pos)
+	}
+}
+
+func Hidden(v param.Params) param.Params {
+	return param.With(v, paramHidden, true)
+}
+
+func Required(v param.Params) param.Params {
+	return param.With(v, paramRequired, true)
+}
+
+func Slice(v param.Params) param.Params {
+	return param.With(v, paramSlice, true)
+}
+
+func Default(in any) param.Option {
+	return func(v param.Params) param.Params {
+		return param.With(v, paramDefault, in)
+	}
+}
+
+func Description(in string) param.Option {
+	return func(v param.Params) param.Params {
+		return param.With(v, paramDesc, in)
+	}
+}
+
+func HasDefaut(fn param.Params) bool {
+	_, ok := fn.Param(paramDefault)
+
+	return ok
+}
+
+func DataPosition(fn param.Params) (uint64, bool) {
+	return param.Uint64(paramPos, fn)
+}
+
+func DataDefaut(fn param.Params) (any, bool) {
+	data, ok := fn.Param(paramDefault)
+
+	return data, ok
+}
+
+func IsSlice(fn param.Params) bool {
+	data, ok := param.Bool(paramSlice, fn)
+
+	return ok && data
+}
+
+func IsBool(fn param.Params) bool {
+	data, ok := param.Bool(paramBool, fn)
+
+	return ok && data
+}
+
+func IsHidden(fn param.Params) bool {
+	data, ok := param.Bool(paramHidden, fn)
+
+	return ok && data
+}
+
+func IsRequired(fn param.Params) bool {
+	data, ok := param.Bool(paramRequired, fn)
+
+	return ok && data
+}
+
+func DataDescription(fn param.Params) string {
+	data, _ := param.String(fn, paramDesc)
+
+	return data
+}

definition/option/tpl/option.tmpl

@@ -1,33 +0,0 @@
-// read{{.FuncName}} {{.Description}}.
-func (i {{.StructName}}) read{{.FuncName}}(ctx context.Context) (v {{.Type}},e error) {
-	val, err := i.Value(ctx, {{ .ParentKeys }}"{{ .Name }}")
-	if err != nil {
-        {{if .HasDefault}}
-        {{$default := .Default}}
-        {{range .DefaultErrors}}
-        if errors.Is(err,{{.}}){
-            return {{$default}}
-		}
-        {{end}}
-        {{end}}
-        return v, fmt.Errorf("read {{.Keys}}:%w",err)
-	}
-
-	{{.Parse "val" "v" .Keys }}
-}
-
-// Read{{.FuncName}} {{.Description}}.
-func (i {{.StructName}}) Read{{.FuncName}}(ctx context.Context) ({{.Type}}, error) {
-    return i.read{{.FuncName}}(ctx)
-}
-
-// {{.FuncName}} {{.Description}}.
-func (i {{.StructName}}) {{.FuncName}}({{if .Context}} ctx context.Context {{end}}) {{.Type}} {
-    {{if not .Context}} ctx := context.Background() {{end}}
-	val, err := i.read{{.FuncName}}(ctx)
-	if err != nil {
-		i.log(ctx, "get {{.Keys}}: %v", err)
-	}
-
-	return val
-}

definition/option/tpl/unmarshal_json.tmpl

@@ -1,8 +0,0 @@
-{{block "UnmarshalJSON" . }}
-	pval, perr := {{.ValName}}.ParseString()
-	if perr != nil {
-		return {{.Value}}, fmt.Errorf("read {{.Keys}}:%w", perr)
-	}
-
-	return {{.Value}}, {{.Value}}.UnmarshalJSON([]byte(pval))
-{{end}}

definition/option/tpl/unmarshal_text.tmpl

@@ -1,8 +0,0 @@
-{{block "UnmarshalText" . }}
-	pval, perr := {{.ValName}}.ParseString()
-	if perr != nil {
-		return {{.Value}}, fmt.Errorf("read {{.Keys}}:%w", perr)
-	}
-
-	return {{.Value}}, {{.Value}}.UnmarshalText([]byte(pval))
-{{end}}

definition/option/view.go

@@ -1,235 +0,0 @@
-package option
-
-import (
-	"bytes"
-	"embed"
-	"encoding"
-	"encoding/json"
-	"fmt"
-	"io"
-	"reflect"
-	"strings"
-	"text/template"
-	"time"
-
-	"gitoa.ru/go-4devs/config/definition"
-	"gitoa.ru/go-4devs/config/definition/generate"
-)
-
-//go:embed tpl/*
-var tpls embed.FS
-
-//nolint:gochecknoglobals
-var tpl = template.Must(template.New("tpls").ParseFS(tpls, "tpl/*.tmpl"))
-
-//nolint:gochecknoinits
-func init() {
-	generate.MustAdd(Kind, Handle(tpl.Lookup("option.tmpl")))
-}
-
-func Handle(tpl *template.Template) generate.Handle {
-	return func(w io.Writer, h generate.Handler, o definition.Option) error {
-		opt, _ := o.(Option)
-		if err := tpl.Execute(w, View{Option: opt, Handler: h}); err != nil {
-			return fmt.Errorf("option tpl:%w", err)
-		}
-
-		return nil
-	}
-}
-
-type View struct {
-	Option
-	generate.Handler
-}
-
-func (v View) Context() bool {
-	return v.Options().Context
-}
-
-func (v View) FuncName() string {
-	if funcName, ok := v.Option.Params.Get(ViewParamFunctName); ok {
-		name, _ := funcName.(string)
-
-		return name
-	}
-
-	return generate.FuncName(v.Name)
-}
-
-func (v View) Description() string {
-	if desc, ok := v.Option.Params.Get(ViewParamDescription); ok {
-		description, _ := desc.(string)
-
-		return description
-	}
-
-	return v.Option.Description
-}
-
-func (v View) Default() string {
-	switch data := v.Option.Default.(type) {
-	case time.Time:
-		return fmt.Sprintf("time.Parse(%q,time.RFC3339Nano)", data.Format(time.RFC3339Nano))
-	case time.Duration:
-		return fmt.Sprintf("time.ParseDuration(%q)", data)
-	default:
-		return fmt.Sprintf("%#v, nil", data)
-	}
-}
-
-func (v View) HasDefault() bool {
-	return v.Option.Default != nil
-}
-
-func (v View) ParentKeys() string {
-	if len(v.Handler.Keys()) > 0 {
-		return `"` + strings.Join(v.Handler.Keys(), `","`) + `",`
-	}
-
-	return ""
-}
-
-func (v View) Type() string {
-	slice := ""
-
-	if vtype, ok := v.Option.Type.(string); ok {
-		if strings.Contains(vtype, ".") {
-			if name, err := v.AddType(vtype); err == nil {
-				return slice + name
-			}
-		}
-
-		return vtype
-	}
-
-	rtype := reflect.TypeOf(v.Option.Type)
-
-	if rtype.PkgPath() == "" {
-		return rtype.String()
-	}
-
-	if rtype.Kind() == reflect.Slice {
-		slice = "[]"
-	}
-
-	short, err := v.AddType(rtype.PkgPath() + "." + rtype.Name())
-	if err != nil {
-		return err.Error()
-	}
-
-	return slice + short
-}
-
-func (v View) FuncType() string {
-	return generate.FuncName(v.Type())
-}
-
-func (v View) Parse(valName string, value string, keys []string) string {
-	h := parser(v.Option.Type)
-
-	data, err := h(ParseData{
-		Value:   value,
-		ValName: valName,
-		Keys:    keys,
-		View:    v,
-	})
-	if err != nil {
-		return err.Error()
-	}
-
-	return data
-}
-
-//nolint:gochecknoglobals,unparam
-var parses = map[string]func(data ParseData) (string, error){
-	typesIntreface[0].Name(): func(data ParseData) (string, error) {
-		var b bytes.Buffer
-
-		err := tpl.ExecuteTemplate(&b, "unmarshal_text.tmpl", data)
-		if err != nil {
-			return "", fmt.Errorf("execute unmarshal text:%w", err)
-		}
-
-		return b.String(), nil
-	},
-	typesIntreface[1].Name(): func(data ParseData) (string, error) {
-		var b bytes.Buffer
-
-		err := tpl.ExecuteTemplate(&b, "unmarshal_json.tmpl", data)
-		if err != nil {
-			return "", fmt.Errorf("execute unmarshal json:%w", err)
-		}
-
-		return b.String(), nil
-	},
-	TypeInt:     internal,
-	TypeInt64:   internal,
-	TypeBool:    internal,
-	TypeString:  internal,
-	TypeFloat64: internal,
-	TypeUint:    internal,
-	TypeUint64:  internal,
-	"time.Duration": func(data ParseData) (string, error) {
-		return fmt.Sprintf("return %s.ParseDuration()", data.ValName), nil
-	},
-	"time.Time": func(data ParseData) (string, error) {
-		return fmt.Sprintf("return %s.ParseTime()", data.ValName), nil
-	},
-	"any": func(data ParseData) (string, error) {
-		return fmt.Sprintf("return %[2]s, %[1]s.Unmarshal(&%[2]s)", data.ValName, data.Value), nil
-	},
-}
-
-func internal(data ParseData) (string, error) {
-	var b bytes.Buffer
-
-	err := tpl.ExecuteTemplate(&b, "parse.tmpl", data)
-	if err != nil {
-		return "", fmt.Errorf("execute parse.tmpl:%w", err)
-	}
-
-	return b.String(), nil
-}
-
-//nolint:gochecknoglobals
-var typesIntreface = [...]reflect.Type{
-	reflect.TypeOf((*encoding.TextUnmarshaler)(nil)).Elem(),
-	reflect.TypeOf((*json.Unmarshaler)(nil)).Elem(),
-}
-
-func parser(data any) func(ParseData) (string, error) {
-	vtype := reflect.TypeOf(data)
-	name := vtype.Name()
-
-	if v, ok := data.(string); ok {
-		name = v
-	}
-
-	if vtype.Kind() == reflect.Slice {
-		return parses["any"]
-	}
-
-	if h, ok := parses[name]; ok {
-		return h
-	}
-
-	for _, extypes := range typesIntreface {
-		if vtype.Implements(extypes) {
-			return parses[extypes.Name()]
-		}
-
-		if vtype.Kind() != reflect.Ptr && reflect.PointerTo(vtype).Implements(extypes) {
-			return parses[extypes.Name()]
-		}
-	}
-
-	return parses["any"]
-}
-
-type ParseData struct {
-	Value   string
-	ValName string
-	Keys    []string
-	View
-}

definition/option/view_params.go

@@ -1,6 +0,0 @@
-package option
-
-const (
-	ViewParamFunctName   = "view.funcName"
-	ViewParamDescription = "view.description"
-)

definition/proto/proto.go

@@ -1,27 +1,33 @@
 package proto
 
 import (
-	"gitoa.ru/go-4devs/config/definition"
+	"gitoa.ru/go-4devs/config"
+	"gitoa.ru/go-4devs/config/definition/option"
+	"gitoa.ru/go-4devs/config/key"
+	"gitoa.ru/go-4devs/config/param"
 )
 
-const Kind = "proto"
+var _ config.Group = New("", "")
 
-func New(name, desc string, opt definition.Option) Proto {
-	pr := Proto{
-		Name:        name,
-		Description: desc,
-		Option:      opt,
+func New(name string, desc string, opts ...config.Option) Proto {
+	return Proto{
+		name:   key.Wild(name),
+		opts:   opts,
+		Params: param.New(option.Description(desc)),
 	}
-
-	return pr
 }
 
 type Proto struct {
-	Name        string
-	Description string
-	Option      definition.Option
+	param.Params
+
+	opts []config.Option
+	name string
 }
 
-func (p Proto) Kind() string {
-	return Kind
+func (p Proto) Options() []config.Option {
+	return p.opts
+}
+
+func (p Proto) Name() string {
+	return p.name
 }

definition/proto/view.go

@@ -1,80 +0,0 @@
-package proto
-
-import (
-	"fmt"
-	"io"
-	"strings"
-	"text/template"
-
-	"gitoa.ru/go-4devs/config/definition"
-	"gitoa.ru/go-4devs/config/definition/generate"
-	"gitoa.ru/go-4devs/config/definition/option"
-)
-
-//nolint:gochecknoinits
-func init() {
-	generate.MustAdd(Kind, handle)
-}
-
-func handle(w io.Writer, data generate.Handler, opt definition.Option) error {
-	proto, ok := opt.(Proto)
-	if !ok {
-		return fmt.Errorf("%w:%T", generate.ErrWrongType, opt)
-	}
-
-	if viewOpt, ok := proto.Option.(option.Option); ok {
-		viewOpt = viewOpt.WithParams(
-			definition.Param{
-				Name:  option.ViewParamFunctName,
-				Value: generate.FuncName(proto.Name) + generate.FuncName(viewOpt.Name),
-			},
-			definition.Param{
-				Name:  option.ViewParamDescription,
-				Value: proto.Description + " " + viewOpt.Description,
-			},
-		)
-
-		return option.Handle(tpl)(w, data, viewOpt)
-	}
-
-	return fmt.Errorf("%w:%T", generate.ErrWrongType, opt)
-}
-
-//nolint:gochecknoglobals
-var (
-	tpl            = template.Must(template.New("tpls").Funcs(template.FuncMap{"join": strings.Join}).Parse(templateOption))
-	templateOption = `// read{{.FuncName}} {{.Description}}.
-func (i {{.StructName}}) read{{.FuncName}}(ctx context.Context, key string) (v {{.Type}},e error) {
-	val, err := i.Value(ctx, {{ .ParentKeys }} key, "{{.Name}}")
-	if err != nil {
-        {{if .HasDefault}}
-        {{$default := .Default}}
-        {{range .DefaultErrors}}
-        if errors.Is(err,{{.}}){
-            return {{$default}}
-		}
-        {{end}}
-        {{end}}
-        return v, fmt.Errorf("read {{.Keys}}:%w",err)
-	}
-
-	{{.Parse "val" "v" .Keys }}
-}
-
-// Read{{.FuncName}} {{.Description}}.
-func (i {{.StructName}}) Read{{.FuncName}}(ctx context.Context, key string) ({{.Type}}, error) {
-    return i.read{{.FuncName}}(ctx, key)
-}
-
-// {{.FuncName}} {{.Description}}.
-func (i {{.StructName}}) {{.FuncName}}({{if .Context}} ctx context.Context, {{end}} key string) {{.Type}} {
-    {{if not .Context}} ctx := context.Background() {{end}}
-	val, err := i.read{{.FuncName}}(ctx, key)
-	if err != nil {
-		i.log(ctx, "get {{.Keys}}: %v", err)
-	}
-
-	return val
-}
-`
-)