types (#1)

Co-authored-by: andrey1s <andrey@4devs.pro>
Reviewed-on: #1
Co-authored-by: andrey <andrey@4devs.io>
Co-committed-by: andrey <andrey@4devs.io>

.drone.yml

@@ -0,0 +1,42 @@
+kind: pipeline
+name: default
+
+steps:
+- name: golangci-lint
+  image: golangci/golangci-lint:v1.49
+  volumes:
+    - name: deps
+      path: /go/src/mod
+  commands:
+  - golangci-lint run --timeout 5m
+
+- name: test 
+  image: golang
+  volumes:
+  - name: deps
+    path: /go/src/mod
+  commands:
+  - go test ./...
+
+- name: scripts golangci-lint
+  image: golangci/golangci-lint:v1.49
+  volumes:
+    - name: deps
+      path: /go/src/mod
+  commands:
+  - cd scripts
+  - golangci-lint run --timeout 5m
+
+- name: scripts test
+  image: golang
+  volumes:
+  - name: deps
+    path: /go/src/mod
+  commands:
+  - cd scripts
+  - go test ./...
+
+volumes:
+- name: deps
+  temp: {}
+

.golangci.yml

@@ -0,0 +1,43 @@
+linters-settings:
+    dupl:
+      threshold: 100
+    funlen:
+      lines: 100
+      statements: 50
+    goconst:
+      min-len: 2
+      min-occurrences: 2
+    gocyclo:
+      min-complexity: 15
+    golint:
+      min-confidence: 0
+    govet:
+      check-shadowing: true
+    lll:
+      line-length: 140
+    maligned:
+      suggest-new: true
+    misspell:
+      locale: US  
+    varnamelen:
+      min-name-length: 2
+
+linters:
+    enable-all: true
+    disable:
+      - varcheck
+      - maligned
+      - scopelint
+      - nosnakecase
+      - ifshort
+      - golint
+      - interfacer
+      - structcheck
+      - deadcode
+      - exhaustivestruct
+      - exhaustruct
+
+# is disabled because of generics. You can track the evolution of the generics support by following the https://github.com/golangci/golangci-lint/issues/2649
+      - rowserrcheck
+      - sqlclosecheck
+      - wastedassign

README.md

@@ -1,2 +1,3 @@
 # mime
 
+[![Build Status](https://drone.gitoa.ru/api/badges/go-4devs/mime/status.svg)](https://drone.gitoa.ru/go-4devs/mime)

mime_example_test.go

@@ -0,0 +1,36 @@
+package mime_test
+
+import (
+	"fmt"
+
+	"gitoa.ru/go-4devs/mime"
+)
+
+func ExampleMime_String() {
+	fmt.Printf("%v", mime.TextHTML)
+
+	// Output:
+	// text/html
+}
+
+func ExampleMime_Is() {
+	fmt.Printf("%v\n%v",
+		mime.TextHTML.Is(mime.ApplicationJSON, mime.ApplicationJavascript),
+		mime.TextHTML.Is(mime.ApplicationJavascript, mime.TextHTML),
+	)
+
+	// Output:
+	// false
+	// true
+}
+
+func ExampleMime_ExtTypes() {
+	fmt.Printf("%v\n%v",
+		mime.TextHTML.ExtTypes(),
+		mime.ApplicationJavascript.ExtTypes(),
+	)
+
+	// Output:
+	// [html htm shtml]
+	// [js mjs jsm]
+}

scripts/command/mime.go

@@ -27,7 +27,7 @@ func Mime() *console.Command {
 		Name:        "mime",
 		Description: "generate mime from file",
 		Configure: func(ctx context.Context, cfg *input.Definition) error {
-			cfg.SetArgument(ArgFile, "file", argument.Required)
+			cfg.SetArgument(ArgFile, "yaml file", argument.Required)
 			cfg.SetOptions(
 				option.String(OptExtTpl, "extension template", option.Default("mime/tpl/extension.text.tmpl")),
 				option.String(OptExtPackage, "extension package", option.Default("mime")),

scripts/go.mod

@@ -6,4 +6,5 @@ require (
 	github.com/achiku/varfmt v0.0.0-20160708124000-f820e1efecee
 	gitoa.ru/go-4devs/closer v0.1.1
 	gitoa.ru/go-4devs/console v0.1.2
+	gopkg.in/yaml.v3 v3.0.1
 )

scripts/go.sum

@@ -3,8 +3,10 @@ github.com/achiku/varfmt v0.0.0-20160708124000-f820e1efecee/go.mod h1:RKS7P4TSY/
 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/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@@ -18,6 +20,7 @@ gitoa.ru/go-4devs/closer v0.1.1/go.mod h1:S+QAdgSt4CVLH3v3YZK1Mukl7SVn2Z0CYj0oJQ
 gitoa.ru/go-4devs/console v0.1.2 h1:SsQWLSClXFwWFseH6CGKQfmCtG84aHOiaFHG3oZlJ8s=
 gitoa.ru/go-4devs/console v0.1.2/go.mod h1:ddqmjQ0yr9v+oa5E3Bu3X/SUcws/ENR5f5cz1g5fHbk=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

scripts/main.go

@@ -11,8 +11,10 @@ import (
 
 func main() {
 	ctx, cancel := context.WithCancel(context.Background())
+
 	closer.AddLast(func() error {
 		cancel()
+
 		return nil
 	})
 

scripts/mime/generate.go

@@ -1,31 +1,105 @@
 package mime
 
 import (
-	"encoding/json"
+	"errors"
 	"fmt"
 	"go/format"
-	"io/ioutil"
 	"os"
 	"path"
 	"text/template"
+
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrDuplicate = errors.New("duplicate")
+	ErrNotFound  = errors.New("not found")
+)
+
+const (
+	NameExt  = "ext"
+	NameMime = "mime"
 )
 
 type Config struct {
 	Source string
 
-	Mimes       map[string][]string
+	Mimes       []Data `yaml:"mime"`
 	MimePrefix  string
 	MimeTpl     string
 	MimeResult  string
 	MimePackage string
 
-	Extensions map[string][]string
+	Extensions []Data `yaml:"ext"`
 	ExtPrefix  string
 	ExtTpl     string
 	ExtResult  string
 	ExtPackage string
 }
 
+type Data struct {
+	Name  string   `yaml:"name"`
+	ID    int      `yaml:"id"`
+	Value []string `yaml:"value,omitempty"`
+}
+
+func (c *Config) Base(name string) string {
+	switch name {
+	case NameExt:
+		return path.Base(c.ExtTpl)
+	case NameMime:
+		return path.Base(c.MimeTpl)
+	}
+
+	return ""
+}
+
+func (c *Config) Result(name string) string {
+	switch name {
+	case NameExt:
+		return c.ExtResult
+	case NameMime:
+		return c.MimeResult
+	}
+
+	return ""
+}
+
+func (c *Config) ValidateAndFillExt() error {
+	mimes := make(map[string]int)
+	mimeIDs := make(map[int]string)
+	extIndex := make(map[string]int)
+
+	for idx, ext := range c.Extensions {
+		if _, ok := extIndex[ext.Name]; ok {
+			return fmt.Errorf("extension %v %w: with id %v", ext.Name, ErrDuplicate, c.Extensions[extIndex[ext.Name]].ID)
+		}
+
+		extIndex[ext.Name] = idx
+	}
+
+	for _, mime := range c.Mimes {
+		if _, ok := mimes[mime.Name]; ok {
+			return fmt.Errorf("mime %v %w: with id %v", mime.Name, ErrDuplicate, mimes[mime.Name])
+		}
+
+		if _, ok := mimeIDs[mime.ID]; ok {
+			return fmt.Errorf("ID %v %w: with name %v", mime.ID, ErrDuplicate, mimeIDs[mime.ID])
+		}
+
+		for _, ext := range mime.Value {
+			idx, ok := extIndex[ext]
+			if !ok {
+				return fmt.Errorf("%w ext by %v", ErrNotFound, mime.Name)
+			}
+
+			c.Extensions[idx].Value = append(c.Extensions[idx].Value, mime.Name)
+		}
+	}
+
+	return nil
+}
+
 func WithExtTpl(name string) Option {
 	return func(c *Config) {
 		c.ExtTpl = name
@@ -78,11 +152,9 @@ func Generate(fileName string, opts ...Option) error {
 		ExtPrefix:  "Ext",
 		ExtTpl:     "mime/tpl/extension.text.tmpl",
 		ExtResult:  "extension.go",
-		Extensions: make(map[string][]string),
 		ExtPackage: "mime",
 
 		MimeTpl:     "mime/tpl/mime.text.tmpl",
-		Mimes:       make(map[string][]string),
 		MimePrefix:  "",
 		MimeResult:  "mime.go",
 		MimePackage: "mime",
@@ -92,46 +164,47 @@ func Generate(fileName string, opts ...Option) error {
 		opt(&cfg)
 	}
 
-	data, err := os.ReadFile(fileName)
+	data, cerr := os.ReadFile(fileName)
-	if err != nil {
+	if cerr != nil {
-		return fmt.Errorf("read file:%w", err)
+		return fmt.Errorf("read file:%w", cerr)
 	}
 
-	if err := json.Unmarshal(data, &cfg.Mimes); err != nil {
+	if uerr := yaml.Unmarshal(data, &cfg); uerr != nil {
-		return fmt.Errorf("unmarshal:%w", err)
+		return fmt.Errorf("unmarshal:%w", uerr)
 	}
 
-	cfg.Extensions = extensions(cfg.Mimes)
+	if validErr := cfg.ValidateAndFillExt(); validErr != nil {
+		return fmt.Errorf("config:%w", validErr)
+	}
 
 	template, err := template.New("mimes").Funcs(funcMap()).ParseFiles(cfg.ExtTpl, cfg.MimeTpl)
 	if err != nil {
 		return fmt.Errorf("ext template:%w", err)
 	}
 
-	extFile, err := os.Create(cfg.ExtResult)
+	if exErr := Create(template, NameExt, cfg); exErr != nil {
+		return fmt.Errorf("ext create:%w", exErr)
+	}
+
+	if mimeErr := Create(template, NameMime, cfg); mimeErr != nil {
+		return fmt.Errorf("mime create:%w", mimeErr)
+	}
+
+	return nil
+}
+
+func Create(tpl *template.Template, name string, cfg Config) error {
+	extFile, err := os.Create(cfg.Result(name))
 	if err != nil {
 		return fmt.Errorf("ext file:%w", err)
 	}
 
-	if err := template.ExecuteTemplate(extFile, path.Base(cfg.ExtTpl), cfg); err != nil {
+	if exErr := tpl.ExecuteTemplate(extFile, cfg.Base(name), cfg); exErr != nil {
-		return fmt.Errorf("ext execute:%w", err)
+		return fmt.Errorf("ext execute:%w", exErr)
 	}
 
-	if err := Format(extFile.Name()); err != nil {
+	if formatErr := Format(extFile.Name()); formatErr != nil {
-		return fmt.Errorf("format ext:%w", err)
+		return fmt.Errorf("format ext:%w", formatErr)
-	}
-
-	mimeFile, err := os.Create(cfg.MimeResult)
-	if err != nil {
-		return fmt.Errorf("mime file:%w", err)
-	}
-
-	if err := template.ExecuteTemplate(mimeFile, path.Base(cfg.MimeTpl), cfg); err != nil {
-		return fmt.Errorf("mime execute:%w", err)
-	}
-
-	if err := Format(mimeFile.Name()); err != nil {
-		return fmt.Errorf("format mime:%w", err)
 	}
 
 	return nil
@@ -139,13 +212,14 @@ func Generate(fileName string, opts ...Option) error {
 
 // Format file and write it.
 func Format(name string) error {
-	in, err := ioutil.ReadFile(name)
+	in, err := os.ReadFile(name)
 	if err != nil {
-		return err
+		return fmt.Errorf("read file:%w", err)
 	}
+
 	out, err := format.Source(in)
 	if err != nil {
-		return err
+		return fmt.Errorf("format source:%w", err)
 	}
 
 	file, err := os.Create(name)
@@ -159,19 +233,3 @@ func Format(name string) error {
 
 	return nil
 }
-
-func extensions(mimes map[string][]string) map[string][]string {
-	out := make(map[string][]string)
-
-	for mime, exts := range mimes {
-		for _, ext := range exts {
-			if _, ok := out[ext]; ok {
-				out[ext] = append(out[ext], mime)
-				continue
-			}
-			out[ext] = []string{ext}
-		}
-	}
-
-	return out
-}

scripts/mime/tpl/extension.text.tmpl

@@ -1,19 +1,58 @@
 // Code generated by gitoa.ru/go-4devs/mime and sourse {{.Source}}
 package {{.ExtPackage}}
 
-const (
+import "fmt"
-{{- range $key, $value := .Extensions }}
-    {{ name $.ExtPrefix $key }} = "{{ $key }}"
-{{- end}}
-)
 
-func Mime(name string) []string {
+type Ext int
-	switch name {
+
-{{- range $key, $value := .Extensions }}    
+type ExtTypes []Ext
-	case {{ name $.ExtPrefix $key }}:
+
-		return {{ value $value }}
+func (v Ext) Is(types ...Ext) bool {
+	for _, ext := range types {
+		if ext == v {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (v Ext) String() string {
+	switch v {
+{{- range $value := .Extensions }}    
+	case {{ name $.ExtPrefix $value.Name }}:
+		return "{{- $value.Name -}}"
+{{- end}}
+	}
+
+	return fmt.Sprintf("Ext(%d)",v)
+}
+
+func (v Ext) MimeTypes() MimeTypes{
+	switch v {
+{{- range $value := .Extensions }}    
+	case {{ name $.ExtPrefix $value.Name }}:
+		return MimeTypes{ {{- value $.MimePrefix $value.Value -}} }
 {{- end}}
 	}
 	
 	return nil
 }
+
+const (
+{{- range $value := .Extensions }}
+    {{ name $.ExtPrefix $value.Name }} Ext = {{ $value.ID }}
+{{- end}}
+)
+
+func ExtFromString(name string) Ext {
+	switch name {
+{{- range $value := .Extensions }}    
+	case "{{- $value.Name -}}":
+		return {{ name $.ExtPrefix $value.Name }}
+{{- end}}
+	}
+
+	return 0
+}
+

scripts/mime/tpl/mime.text.tmpl

@@ -1,19 +1,57 @@
 // Code generated by gitoa.ru/go-4devs/mime and sourse {{.Source}}
 package {{.MimePackage}}
 
-const (
+import "fmt"
-{{- range $key, $value := .Mimes }}
-    {{ name $.MimePrefix $key }} = "{{ $key }}"
-{{- end}}
-)
 
-func Extension(name string) []string {
+type Mime int
-	switch name {
+
-{{- range $key, $value := .Mimes }}    
+type MimeTypes []Mime
-	case {{ name $.MimePrefix $key }}:
+
-		return {{ value $value }}
+func (v Mime) Is(types ...Mime) bool {
+	for _, mime := range types {
+		if mime == v {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (v Mime) String() string {
+	switch v {
+{{- range $value := .Mimes }}    
+	case {{ name $.MimePrefix $value.Name }}:
+		return "{{- $value.Name -}}"
+{{- end}}
+	}
+
+	return fmt.Sprintf("Mime(%d)",v)
+}
+
+func (v Mime) ExtTypes() ExtTypes{
+	switch v {
+{{- range $value := .Mimes }}    
+	case {{ name $.MimePrefix $value.Name }}:
+		return []Ext{ {{- value $.ExtPrefix $value.Value -}} }
 {{- end}}
 	}
 	
 	return nil
 }
+
+const (
+{{- range $value := .Mimes }}
+    {{ name $.MimePrefix $value.Name }} Mime = {{ $value.ID }}
+{{- end}}
+)
+
+func MimeFromString(name string) Mime {
+	switch name {
+{{- range $value := .Mimes }}    
+	case "{{- $value.Name -}}":
+		return {{ name $.MimePrefix $value.Name }}
+{{- end}}
+	}
+
+	return 0
+}

scripts/mime/varmane.go

@@ -1,7 +1,7 @@
 package mime
 
 import (
-	"fmt"
+	"bytes"
 	"strings"
 	"unicode"
 
@@ -27,6 +27,11 @@ func VarName(prefix, name string) string {
 	return varfmt.PublicVarName(prefix + "_" + name)
 }
 
-func Value(val []string) string {
+func Value(prefix string, val []string) string {
-	return fmt.Sprintf("%#v", val)
+	var out bytes.Buffer
+	for _, name := range val {
+		out.WriteString(VarName(prefix, name) + ",")
+	}
+
+	return out.String()
 }