v0.0.294 migrate bfcodegen to templates

bfcodegen/csid-generate.go

@@ -1,6 +1,8 @@
 package bfcodegen
 
 import (
+	"bytes"
+	_ "embed"
 	"errors"
 	"fmt"
 	"gogs.mikescher.com/BlackForestBytes/goext"
@@ -14,6 +16,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"text/template"
 	"time"
 )
 
@@ -30,6 +33,9 @@ var rexCSIDDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s
 
 var rexCSIDChecksumConst = rext.W(regexp.MustCompile(`const ChecksumCharsetIDGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 
+//go:embed csid-generate.template
+var templateCSIDGenerateText string
+
 func GenerateCharsetIDSpecs(sourceDir string, destFile string) error {
 
 	files, err := os.ReadDir(sourceDir)
@@ -168,198 +174,19 @@ func processCSIDFile(basedir string, fn string) ([]CSIDDef, string, error) {
 }
 
 func fmtCSIDOutput(cs string, ids []CSIDDef, pkgname string) string {
-	str := "// Code generated by id-generate.go DO NOT EDIT.\n"
-	str += "\n"
-	str += "package " + pkgname + "\n"
-	str += "\n"
+	templ := template.Must(template.New("csid-generate").Parse(templateCSIDGenerateText))
 
-	str += `import "crypto/rand"` + "\n"
-	str += `import "fmt"` + "\n"
-	str += `import "github.com/go-playground/validator/v10"` + "\n"
-	str += `import "github.com/rs/zerolog/log"` + "\n"
-	str += `import "gogs.mikescher.com/BlackForestBytes/goext/exerr"` + "\n"
-	str += `import "gogs.mikescher.com/BlackForestBytes/goext/langext"` + "\n"
-	str += `import "gogs.mikescher.com/BlackForestBytes/goext/rext"` + "\n"
-	str += `import "math/big"` + "\n"
-	str += `import "reflect"` + "\n"
-	str += `import "regexp"` + "\n"
-	str += `import "strings"` + "\n"
-	str += "\n"
-
-	str += "const ChecksumCharsetIDGenerator = \"" + cs + "\" // GoExtVersion: " + goext.GoextVersion + "\n"
-	str += "\n"
-
-	str += "const idlen = 24\n"
-	str += "\n"
-	str += "const checklen = 1\n"
-	str += "\n"
-	str += `const idCharset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"` + "\n"
-	str += "const idCharsetLen = len(idCharset)\n"
-	str += "\n"
-	str += "var charSetReverseMap = generateCharsetMap()\n"
-	str += "\n"
-	str += "const (\n"
-	for _, iddef := range ids {
-		str += "	prefix" + iddef.Name + " = \"" + iddef.Prefix + "\"" + "\n"
-	}
-	str += ")\n"
-	str += "\n"
-	str += "var (\n"
-	for _, iddef := range ids {
-		str += "	regex" + iddef.Name + " = generateRegex(prefix" + iddef.Name + ")" + "\n"
-	}
-	str += ")\n"
-	str += "\n"
-	str += "func generateRegex(prefix string) rext.Regex {\n"
-	str += "	return rext.W(regexp.MustCompile(fmt.Sprintf(\"^%s[%s]{%d}[%s]{%d}$\", prefix, idCharset, idlen-len(prefix)-checklen, idCharset, checklen)))\n"
-	str += "}\n"
-	str += "\n"
-
-	str += `func generateCharsetMap() []int {` + "\n"
-	str += `	result := make([]int, 128)` + "\n"
-	str += `	for i := 0; i < len(result); i++ {` + "\n"
-	str += `		result[i] = -1` + "\n"
-	str += `	}` + "\n"
-	str += `	for idx, chr := range idCharset {` + "\n"
-	str += `		result[int(chr)] = idx` + "\n"
-	str += `	}` + "\n"
-	str += `	return result` + "\n"
-	str += `}` + "\n"
-	str += "\n"
-	str += `func generateID(prefix string) string {` + "\n"
-	str += `	k := ""` + "\n"
-	str += `	max := big.NewInt(int64(idCharsetLen))` + "\n"
-	str += `	checksum := 0` + "\n"
-	str += `	for i := 0; i < idlen-len(prefix)-checklen; i++ {` + "\n"
-	str += `		v, err := rand.Int(rand.Reader, max)` + "\n"
-	str += `		if err != nil {` + "\n"
-	str += `			panic(err)` + "\n"
-	str += `		}` + "\n"
-	str += `		v64 := v.Int64()` + "\n"
-	str += `		k += string(idCharset[v64])` + "\n"
-	str += `		checksum = (checksum + int(v64)) % (idCharsetLen)` + "\n"
-	str += `	}` + "\n"
-	str += `	checkstr := string(idCharset[checksum%idCharsetLen])` + "\n"
-	str += `	return prefix + k + checkstr` + "\n"
-	str += `}` + "\n"
-	str += "\n"
-	str += `func validateID(prefix string, value string) error {` + "\n"
-	str += `	if len(value) != idlen {` + "\n"
-	str += `		return exerr.New(exerr.TypeInvalidCSID, "id has the wrong length").Str("value", value).Build()` + "\n"
-	str += `	}` + "\n"
-	str += "\n"
-	str += `	if !strings.HasPrefix(value, prefix) {` + "\n"
-	str += `		return exerr.New(exerr.TypeInvalidCSID, "id is missing the correct prefix").Str("value", value).Str("prefix", prefix).Build()` + "\n"
-	str += `	}` + "\n"
-	str += "\n"
-	str += `	checksum := 0` + "\n"
-	str += `	for i := len(prefix); i < len(value)-checklen; i++ {` + "\n"
-	str += `		ichr := int(value[i])` + "\n"
-	str += `		if ichr < 0 || ichr >= len(charSetReverseMap) || charSetReverseMap[ichr] == -1 {` + "\n"
-	str += `			return exerr.New(exerr.TypeInvalidCSID, "id contains invalid characters").Str("value", value).Build()` + "\n"
-	str += `		}` + "\n"
-	str += `		checksum = (checksum + charSetReverseMap[ichr]) % (idCharsetLen)` + "\n"
-	str += `	}` + "\n"
-	str += "\n"
-	str += `	checkstr := string(idCharset[checksum%idCharsetLen])` + "\n"
-	str += "\n"
-	str += `	if !strings.HasSuffix(value, checkstr) {` + "\n"
-	str += `		return exerr.New(exerr.TypeInvalidCSID, "id checkstring is invalid").Str("value", value).Str("checkstr", checkstr).Build()` + "\n"
-	str += `	}` + "\n"
-	str += "\n"
-	str += `	return nil` + "\n"
-	str += `}` + "\n"
-	str += "\n"
-	str += `func getRawData(prefix string, value string) string {` + "\n"
-	str += `	if len(value) != idlen {` + "\n"
-	str += `		return ""` + "\n"
-	str += `	}` + "\n"
-	str += `	return value[len(prefix) : idlen-checklen]` + "\n"
-	str += `}` + "\n"
-	str += "\n"
-	str += `func getCheckString(prefix string, value string) string {` + "\n"
-	str += `	if len(value) != idlen {` + "\n"
-	str += `		return ""` + "\n"
-	str += `	}` + "\n"
-	str += `	return value[idlen-checklen:]` + "\n"
-	str += `}` + "\n"
-	str += "\n"
-	str += `func ValidateEntityID(vfl validator.FieldLevel) bool {` + "\n"
-	str += `	if !vfl.Field().CanInterface() {` + "\n"
-	str += `		log.Error().Msgf("Failed to validate EntityID (cannot interface ?!?)")` + "\n"
-	str += `		return false` + "\n"
-	str += `	}` + "\n"
-	str += "\n"
-	str += `	ifvalue := vfl.Field().Interface()` + "\n"
-	str += "\n"
-	str += `	if value1, ok := ifvalue.(EntityID); ok {` + "\n"
-	str += "\n"
-	str += `		if vfl.Field().Type().Kind() == reflect.Pointer && langext.IsNil(value1) {` + "\n"
-	str += `			return true` + "\n"
-	str += `		}` + "\n"
-	str += "\n"
-	str += `		if err := value1.Valid(); err != nil {` + "\n"
-	str += `			log.Debug().Msgf("Failed to validate EntityID '%s' (%s)", value1.String(), err.Error())` + "\n"
-	str += `			return false` + "\n"
-	str += `		} else {` + "\n"
-	str += `			return true` + "\n"
-	str += `		}` + "\n"
-	str += "\n"
-	str += `	} else {` + "\n"
-	str += `		log.Error().Msgf("Failed to validate EntityID (wrong type: %T)", ifvalue)` + "\n"
-	str += `		return false` + "\n"
-	str += `	}` + "\n"
-	str += `}` + "\n"
-	str += "\n"
-
-	for _, iddef := range ids {
-
-		str += "// ================================ " + iddef.Name + " (" + iddef.FileRelative + ") ================================" + "\n"
-		str += "" + "\n"
-
-		str += "func New" + iddef.Name + "() " + iddef.Name + " {" + "\n"
-		str += "	return " + iddef.Name + "(generateID(prefix" + iddef.Name + "))" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (id " + iddef.Name + ") Valid() error {" + "\n"
-		str += "	return validateID(prefix" + iddef.Name + ", string(id))" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") String() string {" + "\n"
-		str += "	return string(i)" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") Prefix() string {" + "\n"
-		str += "	return prefix" + iddef.Name + "" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (id " + iddef.Name + ") Raw() string {" + "\n"
-		str += "	return getRawData(prefix" + iddef.Name + ", string(id))" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (id " + iddef.Name + ") CheckString() string {" + "\n"
-		str += "	return getCheckString(prefix" + iddef.Name + ", string(id))" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (id " + iddef.Name + ") Regex() rext.Regex {" + "\n"
-		str += "	return regex" + iddef.Name + "" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
+	buffer := bytes.Buffer{}
 
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"IDs":          ids,
+	})
+	if err != nil {
+		panic(err)
 	}
 
-	return str
+	return buffer.String()
 }

bfcodegen/csid-generate.template

@@ -0,0 +1,168 @@
+// Code generated by csid-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "crypto/rand"
+import "fmt"
+import "github.com/go-playground/validator/v10"
+import "github.com/rs/zerolog/log"
+import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+import "gogs.mikescher.com/BlackForestBytes/goext/rext"
+import "math/big"
+import "reflect"
+import "regexp"
+import "strings"
+
+const ChecksumCharsetIDGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+const idlen = 24
+
+const checklen = 1
+
+const idCharset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+const idCharsetLen = len(idCharset)
+
+var charSetReverseMap = generateCharsetMap()
+
+const ({{range .IDs}}
+	prefix{{.Name}} = "{{.Prefix}}" {{end}}
+)
+
+var ({{range .IDs}}
+	regex{{.Name}} = generateRegex(prefix{{.Name}}) {{end}}
+)
+
+func generateRegex(prefix string) rext.Regex {
+	return rext.W(regexp.MustCompile(fmt.Sprintf("^%s[%s]{%d}[%s]{%d}$", prefix, idCharset, idlen-len(prefix)-checklen, idCharset, checklen)))
+}
+
+func generateCharsetMap() []int {
+	result := make([]int, 128)
+	for i := 0; i < len(result); i++ {
+		result[i] = -1
+	}
+	for idx, chr := range idCharset {
+		result[int(chr)] = idx
+	}
+	return result
+}
+
+func generateID(prefix string) string {
+	k := ""
+	csMax := big.NewInt(int64(idCharsetLen))
+	checksum := 0
+	for i := 0; i < idlen-len(prefix)-checklen; i++ {
+		v, err := rand.Int(rand.Reader, csMax)
+		if err != nil {
+			panic(err)
+		}
+		v64 := v.Int64()
+		k += string(idCharset[v64])
+		checksum = (checksum + int(v64)) % (idCharsetLen)
+	}
+	checkstr := string(idCharset[checksum%idCharsetLen])
+	return prefix + k + checkstr
+}
+
+func validateID(prefix string, value string) error {
+	if len(value) != idlen {
+		return exerr.New(exerr.TypeInvalidCSID, "id has the wrong length").Str("value", value).Build()
+	}
+
+	if !strings.HasPrefix(value, prefix) {
+		return exerr.New(exerr.TypeInvalidCSID, "id is missing the correct prefix").Str("value", value).Str("prefix", prefix).Build()
+	}
+
+	checksum := 0
+	for i := len(prefix); i < len(value)-checklen; i++ {
+		ichr := int(value[i])
+		if ichr < 0 || ichr >= len(charSetReverseMap) || charSetReverseMap[ichr] == -1 {
+			return exerr.New(exerr.TypeInvalidCSID, "id contains invalid characters").Str("value", value).Build()
+		}
+		checksum = (checksum + charSetReverseMap[ichr]) % (idCharsetLen)
+	}
+
+	checkstr := string(idCharset[checksum%idCharsetLen])
+
+	if !strings.HasSuffix(value, checkstr) {
+		return exerr.New(exerr.TypeInvalidCSID, "id checkstring is invalid").Str("value", value).Str("checkstr", checkstr).Build()
+	}
+
+	return nil
+}
+
+func getRawData(prefix string, value string) string {
+	if len(value) != idlen {
+		return ""
+	}
+	return value[len(prefix) : idlen-checklen]
+}
+
+func getCheckString(prefix string, value string) string {
+	if len(value) != idlen {
+		return ""
+	}
+	return value[idlen-checklen:]
+}
+
+func ValidateEntityID(vfl validator.FieldLevel) bool {
+	if !vfl.Field().CanInterface() {
+		log.Error().Msgf("Failed to validate EntityID (cannot interface ?!?)")
+		return false
+	}
+
+	ifvalue := vfl.Field().Interface()
+
+	if value1, ok := ifvalue.(EntityID); ok {
+
+		if vfl.Field().Type().Kind() == reflect.Pointer && langext.IsNil(value1) {
+			return true
+		}
+
+		if err := value1.Valid(); err != nil {
+			log.Debug().Msgf("Failed to validate EntityID '%s' (%s)", value1.String(), err.Error())
+			return false
+		} else {
+			return true
+		}
+
+	} else {
+		log.Error().Msgf("Failed to validate EntityID (wrong type: %T)", ifvalue)
+		return false
+	}
+}
+
+{{range .IDs}}
+
+// ================================ {{.Name}} ({{.FileRelative}}) ================================
+
+func New{{.Name}}() {{.Name}} {
+	return {{.Name}}(generateID(prefix{{.Name}}))
+}
+
+func (id {{.Name}}) Valid() error {
+	return validateID(prefix{{.Name}}, string(id))
+}
+
+func (i {{.Name}}) String() string {
+	return string(i)
+}
+
+func (i {{.Name}}) Prefix() string {
+	return prefix{{.Name}}
+}
+
+func (id {{.Name}}) Raw() string {
+	return getRawData(prefix{{.Name}}, string(id))
+}
+
+func (id {{.Name}}) CheckString() string {
+	return getCheckString(prefix{{.Name}}, string(id))
+}
+
+func (id {{.Name}}) Regex() rext.Regex {
+	return regex{{.Name}}
+}
+
+{{end}}

bfcodegen/csid-generate_test.go

@@ -0,0 +1,52 @@
+package bfcodegen
+
+import (
+	_ "embed"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+//go:embed _test_example.tgz
+var CSIDExampleModels []byte
+
+func TestGenerateCSIDSpecs(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, CSIDExampleModels, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	err = GenerateCharsetIDSpecs(tmpDir, tmpDir+"/csid_gen.go")
+	tst.AssertNoErr(t, err)
+
+	err = GenerateCharsetIDSpecs(tmpDir, tmpDir+"/csid_gen.go")
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(string(tst.Must(os.ReadFile(tmpDir + "/csid_gen.go"))(t)))
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+}

bfcodegen/enum-generate.go

@@ -1,6 +1,8 @@
 package bfcodegen
 
 import (
+	"bytes"
+	_ "embed"
 	"errors"
 	"fmt"
 	"gogs.mikescher.com/BlackForestBytes/goext"
@@ -14,6 +16,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"text/template"
 	"time"
 )
 
@@ -39,6 +42,9 @@ var rexEnumValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(
 
 var rexEnumChecksumConst = rext.W(regexp.MustCompile(`const ChecksumEnumGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 
+//go:embed enum-generate.template
+var templateEnumGenerateText string
+
 func GenerateEnumSpecs(sourceDir string, destFile string) error {
 
 	files, err := os.ReadDir(sourceDir)
@@ -204,133 +210,32 @@ func processEnumFile(basedir string, fn string) ([]EnumDef, string, error) {
 }
 
 func fmtEnumOutput(cs string, enums []EnumDef, pkgname string) string {
-	str := "// Code generated by enum-generate.go DO NOT EDIT.\n"
-	str += "\n"
-	str += "package " + pkgname + "\n"
-	str += "\n"
 
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/langext\"" + "\n"
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/enums\"" + "\n"
-	str += "\n"
+	templ := template.New("enum-generate")
 
-	str += "const ChecksumEnumGenerator = \"" + cs + "\" // GoExtVersion: " + goext.GoextVersion + "\n"
-	str += "\n"
+	templ = templ.Funcs(template.FuncMap{
+		"boolToStr": func(b bool) string { return langext.Conditional(b, "true", "false") },
+		"deref":     func(v *string) string { return *v },
+		"trimSpace": func(str string) string { return strings.TrimSpace(str) },
+		"hasStr":    func(v EnumDef) bool { return v.Type == "string" },
+		"hasDescr": func(v EnumDef) bool {
+			return langext.ArrAll(v.Values, func(val EnumDefVal) bool { return val.Description != nil })
+		},
+	})
 
-	for _, enumdef := range enums {
+	templ = template.Must(templ.Parse(templateEnumGenerateText))
 
-		hasDescr := langext.ArrAll(enumdef.Values, func(val EnumDefVal) bool { return val.Description != nil })
-		hasStr := enumdef.Type == "string"
-
-		str += "// ================================ " + enumdef.EnumTypeName + " ================================" + "\n"
-		str += "//" + "\n"
-		str += "// File:       " + enumdef.FileRelative + "\n"
-		str += "// StringEnum: " + langext.Conditional(hasStr, "true", "false") + "\n"
-		str += "// DescrEnum:  " + langext.Conditional(hasDescr, "true", "false") + "\n"
-		str += "//" + "\n"
-		str += "" + "\n"
-
-		str += "var __" + enumdef.EnumTypeName + "Values = []" + enumdef.EnumTypeName + "{" + "\n"
-		for _, v := range enumdef.Values {
-			str += "    " + v.VarName + "," + "\n"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		if hasDescr {
-			str += "var __" + enumdef.EnumTypeName + "Descriptions = map[" + enumdef.EnumTypeName + "]string{" + "\n"
-			for _, v := range enumdef.Values {
-				str += "    " + v.VarName + ": \"" + strings.TrimSpace(*v.Description) + "\"," + "\n"
-			}
-			str += "}" + "\n"
-			str += "" + "\n"
-		}
-
-		str += "var __" + enumdef.EnumTypeName + "Varnames = map[" + enumdef.EnumTypeName + "]string{" + "\n"
-		for _, v := range enumdef.Values {
-			str += "    " + v.VarName + ": \"" + v.VarName + "\"," + "\n"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Valid() bool {" + "\n"
-		str += "    return langext.InArray(e, __" + enumdef.EnumTypeName + "Values)" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Values() []" + enumdef.EnumTypeName + " {" + "\n"
-		str += "    return __" + enumdef.EnumTypeName + "Values" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesAny() []any {" + "\n"
-		str += "    return langext.ArrCastToAny(__" + enumdef.EnumTypeName + "Values)" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesMeta() []enums.EnumMetaValue {" + "\n"
-		str += "    return " + enumdef.EnumTypeName + "ValuesMeta()"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		if hasStr {
-			str += "func (e " + enumdef.EnumTypeName + ") String() string {" + "\n"
-			str += "    return string(e)" + "\n"
-			str += "}" + "\n"
-			str += "" + "\n"
-		}
-
-		if hasDescr {
-			str += "func (e " + enumdef.EnumTypeName + ") Description() string {" + "\n"
-			str += "    if d, ok := __" + enumdef.EnumTypeName + "Descriptions[e]; ok {" + "\n"
-			str += "        return d" + "\n"
-			str += "    }" + "\n"
-			str += "    return \"\"" + "\n"
-			str += "}" + "\n"
-			str += "" + "\n"
-		}
-
-		str += "func (e " + enumdef.EnumTypeName + ") VarName() string {" + "\n"
-		str += "    if d, ok := __" + enumdef.EnumTypeName + "Varnames[e]; ok {" + "\n"
-		str += "        return d" + "\n"
-		str += "    }" + "\n"
-		str += "    return \"\"" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Meta() enums.EnumMetaValue {" + "\n"
-		if hasDescr {
-			str += "    return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: langext.Ptr(e.Description())}"
-		} else {
-			str += "    return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil}"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func Parse" + enumdef.EnumTypeName + "(vv string) (" + enumdef.EnumTypeName + ", bool) {" + "\n"
-		str += "    for _, ev := range __" + enumdef.EnumTypeName + "Values {" + "\n"
-		str += "        if string(ev) == vv {" + "\n"
-		str += "            return ev, true" + "\n"
-		str += "        }" + "\n"
-		str += "    }" + "\n"
-		str += "    return \"\", false" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func " + enumdef.EnumTypeName + "Values() []" + enumdef.EnumTypeName + " {" + "\n"
-		str += "    return __" + enumdef.EnumTypeName + "Values" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func " + enumdef.EnumTypeName + "ValuesMeta() []enums.EnumMetaValue {" + "\n"
-		str += "    return []enums.EnumMetaValue{" + "\n"
-		for _, v := range enumdef.Values {
-			str += "        " + v.VarName + ".Meta(),\n"
-		}
-		str += "    }" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
+	buffer := bytes.Buffer{}
 
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"Enums":        enums,
+	})
+	if err != nil {
+		panic(err)
 	}
 
-	return str
+	return buffer.String()
 }

bfcodegen/enum-generate.template

@@ -0,0 +1,97 @@
+// Code generated by enum-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+import "gogs.mikescher.com/BlackForestBytes/goext/enums"
+
+const ChecksumEnumGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+{{range .Enums}}
+
+{{ $hasStr   := ( . | hasStr   ) }}
+{{ $hasDescr := ( . | hasDescr ) }}
+
+// ================================ {{.EnumTypeName}} ================================
+//
+// File:       {{.FileRelative}}
+// StringEnum: {{$hasStr   | boolToStr}}
+// DescrEnum:  {{$hasDescr | boolToStr}}
+//
+
+var __{{.EnumTypeName}}Values = []{{.EnumTypeName}}{ {{range .Values}}
+	{{.VarName}}, {{end}}
+}
+
+{{if $hasDescr}}
+var __{{.EnumTypeName}}Descriptions = map[{{.EnumTypeName}}]string{ {{range .Values}}
+	{{.VarName}}: "{{.Description | deref | trimSpace}}", {{end}}
+}
+{{end}}
+
+var __{{.EnumTypeName}}Varnames = map[{{.EnumTypeName}}]string{ {{range .Values}}
+	{{.VarName}}: "{{.VarName}}", {{end}}
+}
+
+func (e {{.EnumTypeName}}) Valid() bool {
+	return langext.InArray(e, __{{.EnumTypeName}}Values)
+}
+
+func (e {{.EnumTypeName}}) Values() []{{.EnumTypeName}} {
+	return __{{.EnumTypeName}}Values
+}
+
+func (e {{.EnumTypeName}}) ValuesAny() []any {
+	return langext.ArrCastToAny(__{{.EnumTypeName}}Values)
+}
+
+func (e {{.EnumTypeName}}) ValuesMeta() []enums.EnumMetaValue {
+	return {{.EnumTypeName}}ValuesMeta()
+}
+
+{{if $hasStr}}
+func (e {{.EnumTypeName}}) String() string {
+	return string(e)
+}
+{{end}}
+
+{{if $hasDescr}}
+func (e {{.EnumTypeName}}) Description() string {
+	if d, ok := __{{.EnumTypeName}}Descriptions[e]; ok {
+		return d
+	}
+	return ""
+}
+{{end}}
+
+func (e {{.EnumTypeName}}) VarName() string {
+	if d, ok := __{{.EnumTypeName}}Varnames[e]; ok {
+		return d
+	}
+	return ""
+}
+
+func (e {{.EnumTypeName}}) Meta() enums.EnumMetaValue {
+    {{if $hasDescr}} return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: langext.Ptr(e.Description())} {{else}} return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil} {{end}}
+}
+
+func Parse{{.EnumTypeName}}(vv string) ({{.EnumTypeName}}, bool) {
+	for _, ev := range __{{.EnumTypeName}}Values {
+		if string(ev) == vv {
+			return ev, true
+		}
+	}
+	return "", false
+}
+
+func {{.EnumTypeName}}Values() []{{.EnumTypeName}} {
+	return __{{.EnumTypeName}}Values
+}
+
+func {{.EnumTypeName}}ValuesMeta() []enums.EnumMetaValue {
+	return []enums.EnumMetaValue{ {{range .Values}}
+            {{.VarName}}.Meta(), {{end}}
+	}
+}
+
+{{end}}

bfcodegen/enum-generate_test.go

@@ -2,6 +2,7 @@ package bfcodegen
 
 import (
 	_ "embed"
+	"fmt"
 	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/tst"
@@ -12,7 +13,7 @@ import (
 )
 
 //go:embed _test_example.tgz
-var ExampleModels []byte
+var EnumExampleModels []byte
 
 func TestGenerateEnumSpecs(t *testing.T) {
 
@@ -20,7 +21,7 @@ func TestGenerateEnumSpecs(t *testing.T) {
 
 	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
 
-	err := os.WriteFile(tmpFile, ExampleModels, 0o777)
+	err := os.WriteFile(tmpFile, EnumExampleModels, 0o777)
 	tst.AssertNoErr(t, err)
 
 	t.Cleanup(func() { _ = os.Remove(tmpFile) })
@@ -39,4 +40,13 @@ func TestGenerateEnumSpecs(t *testing.T) {
 	err = GenerateEnumSpecs(tmpDir, tmpDir+"/enums_gen.go")
 	tst.AssertNoErr(t, err)
 
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(string(tst.Must(os.ReadFile(tmpDir + "/enums_gen.go"))(t)))
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
 }

bfcodegen/id-generate.go

@@ -1,6 +1,8 @@
 package bfcodegen
 
 import (
+	"bytes"
+	_ "embed"
 	"errors"
 	"fmt"
 	"gogs.mikescher.com/BlackForestBytes/goext"
@@ -14,6 +16,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"text/template"
 	"time"
 )
 
@@ -29,6 +32,9 @@ var rexIDDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+s
 
 var rexIDChecksumConst = rext.W(regexp.MustCompile(`const ChecksumIDGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 
+//go:embed id-generate.template
+var templateIDGenerateText string
+
 func GenerateIDSpecs(sourceDir string, destFile string) error {
 
 	files, err := os.ReadDir(sourceDir)
@@ -166,71 +172,22 @@ func processIDFile(basedir string, fn string) ([]IDDef, string, error) {
 }
 
 func fmtIDOutput(cs string, ids []IDDef, pkgname string) string {
-	str := "// Code generated by id-generate.go DO NOT EDIT.\n"
-	str += "\n"
-	str += "package " + pkgname + "\n"
-	str += "\n"
+	templ := template.Must(template.New("id-generate").Parse(templateIDGenerateText))
 
-	str += "import \"go.mongodb.org/mongo-driver/bson\"" + "\n"
-	str += "import \"go.mongodb.org/mongo-driver/bson/bsontype\"" + "\n"
-	str += "import \"go.mongodb.org/mongo-driver/bson/primitive\"" + "\n"
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/exerr\"" + "\n"
-	str += "\n"
-
-	str += "const ChecksumIDGenerator = \"" + cs + "\" // GoExtVersion: " + goext.GoextVersion + "\n"
-	str += "\n"
+	buffer := bytes.Buffer{}
 
 	anyDef := langext.ArrFirstOrNil(ids, func(def IDDef) bool { return def.Name == "AnyID" || def.Name == "AnyId" })
 
-	for _, iddef := range ids {
-
-		str += "// ================================ " + iddef.Name + " (" + iddef.FileRelative + ") ================================" + "\n"
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") MarshalBSONValue() (bsontype.Type, []byte, error) {" + "\n"
-		str += "	if objId, err := primitive.ObjectIDFromHex(string(i)); err == nil {" + "\n"
-		str += "		return bson.MarshalValue(objId)" + "\n"
-		str += "	} else {" + "\n"
-		str += "		return 0, nil, exerr.New(exerr.TypeMarshalEntityID, \"Failed to marshal " + iddef.Name + "(\"+i.String()+\") to ObjectId\").Str(\"value\", string(i)).Type(\"type\", i).Build()" + "\n"
-		str += "	}" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") String() string {" + "\n"
-		str += "	return string(i)" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") ObjID() (primitive.ObjectID, error) {" + "\n"
-		str += "	return primitive.ObjectIDFromHex(string(i))" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		str += "func (i " + iddef.Name + ") Valid() bool {" + "\n"
-		str += "	_, err := primitive.ObjectIDFromHex(string(i))" + "\n"
-		str += "	return err == nil" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
-		if anyDef != nil {
-			str += "func (i " + iddef.Name + ") AsAny() " + anyDef.Name + " {" + "\n"
-			str += "	return " + anyDef.Name + "(i)" + "\n"
-			str += "}" + "\n"
-
-			str += "" + "\n"
-		}
-
-		str += "func New" + iddef.Name + "() " + iddef.Name + " {" + "\n"
-		str += "	return " + iddef.Name + "(primitive.NewObjectID().Hex())" + "\n"
-		str += "}" + "\n"
-
-		str += "" + "\n"
-
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"IDs":          ids,
+		"AnyDef":       anyDef,
+	})
+	if err != nil {
+		panic(err)
 	}
 
-	return str
+	return buffer.String()
 }

bfcodegen/id-generate.template

@@ -0,0 +1,47 @@
+// Code generated by id-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "go.mongodb.org/mongo-driver/bson"
+import "go.mongodb.org/mongo-driver/bson/bsontype"
+import "go.mongodb.org/mongo-driver/bson/primitive"
+import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
+
+const ChecksumIDGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+{{range .IDs}}
+
+// ================================ {{.Name}} ({{.FileRelative}}) ================================
+
+func (i {{.Name}}) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	if objId, err := primitive.ObjectIDFromHex(string(i)); err == nil {
+		return bson.MarshalValue(objId)
+	} else {
+		return 0, nil, exerr.New(exerr.TypeMarshalEntityID, "Failed to marshal {{.Name}}("+i.String()+") to ObjectId").Str("value", string(i)).Type("type", i).Build()
+	}
+}
+
+func (i {{.Name}}) String() string {
+	return string(i)
+}
+
+func (i {{.Name}}) ObjID() (primitive.ObjectID, error) {
+	return primitive.ObjectIDFromHex(string(i))
+}
+
+func (i {{.Name}}) Valid() bool {
+	_, err := primitive.ObjectIDFromHex(string(i))
+	return err == nil
+}
+
+{{if ne $.AnyDef nil}}
+func (i {{.Name}}) AsAny() {{$.AnyDef.Name}} {
+	return {{$.AnyDef.Name}}(i)
+}
+{{end}}
+
+func New{{.Name}}() {{.Name}} {
+	return {{.Name}}(primitive.NewObjectID().Hex())
+}
+
+{{end}}

bfcodegen/id-generate_test.go

@@ -0,0 +1,52 @@
+package bfcodegen
+
+import (
+	_ "embed"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+//go:embed _test_example.tgz
+var IDExampleModels []byte
+
+func TestGenerateIDSpecs(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, IDExampleModels, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go")
+	tst.AssertNoErr(t, err)
+
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go")
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(string(tst.Must(os.ReadFile(tmpDir + "/id_gen.go"))(t)))
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+}

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.293"
+const GoextVersion = "0.0.294"
 
-const GoextVersionTimestamp = "2023-10-30T13:37:31+0100"
+const GoextVersionTimestamp = "2023-10-31T22:58:28+0100"