refactor: 入口移至 cmd/fun,go install 后命令名为 fun

cmd/fun/render.go

@@ -0,0 +1,151 @@
+package main
+
+// 渲染层共享类型与工具：模板数据结构与 fun v1.3.7 gen.go 保持一致，
+// 保证产物字节级不变
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strings"
+	"text/template"
+)
+
+type genType struct {
+	GenServiceList []*genServiceType
+}
+
+type genMethodType struct {
+	MethodName      string
+	ReturnValueText string
+	DtoText         string
+	ArgsText        string
+	GenericTypeText string
+	IsProxy         bool
+	IsStream        bool
+}
+
+type genEnumType struct {
+	Names        []string
+	DisplayNames []string
+	Name         string
+}
+
+type genImportType struct {
+	Name string
+}
+
+type genServiceType struct {
+	ServiceName       string
+	GenMethodTypeList []*genMethodType
+	GenImport         []*genImportType
+	IsIncludeProxy    bool
+	IsIncludeRequest  bool
+	IsIncludeStream   bool
+}
+
+type genClassType struct {
+	Name              string
+	GenImport         []*genImportType
+	GenClassFieldType []*genClassFieldType
+}
+
+type genClassFieldType struct {
+	Name string
+	Type string
+	Tag  string
+}
+
+func deduplicateServiceImports(imports []*genImportType) []*genImportType {
+	seen := make(map[string]bool)
+	var result []*genImportType
+	for _, imp := range imports {
+		if !seen[imp.Name] {
+			seen[imp.Name] = true
+			result = append(result, imp)
+		}
+	}
+	sort.Slice(result, func(i, j int) bool { return result[i].Name < result[j].Name })
+	return result
+}
+
+func parseGenericTypeParams(typeName string) string {
+	start := strings.Index(typeName, "[")
+	end := strings.LastIndex(typeName, "]")
+	paramsStr := typeName[start+1 : end]
+	params := strings.Split(paramsStr, ",")
+	for i, param := range params {
+		LL := strings.Split(strings.TrimSpace(param), ".")
+		params[i] = firstLetterToUpper(LL[len(LL)-1])
+	}
+	return strings.Join(params, "")
+}
+
+func getGenericTypeName(typeName string) string {
+	start := strings.Index(typeName, "[")
+	return typeName[0:start]
+}
+
+func camelToSnake(s string) string {
+	re := regexp.MustCompile(`([a-z0-9])([A-Z])`)
+	snake := re.ReplaceAllString(s, `${1}_${2}`)
+	return strings.ToLower(snake)
+}
+
+func firstLetterToUpper(s string) string {
+	if s == "" {
+		return s
+	}
+	return strings.ToUpper(s[:1]) + s[1:]
+}
+
+func firstLetterToLower(s string) string {
+	if s == "" {
+		return s
+	}
+	return strings.ToLower(s[:1]) + s[1:]
+}
+
+// fileSet 渲染产物集合：相对路径 → 内容
+type fileSet map[string][]byte
+
+// renderCode 模板渲染（等价旧 genCode 的模板执行部分，写盘由调用方统一处理）
+func renderCode(templateContent string, outputFileName string, templateData any, languageName string, files fileSet) {
+	tmpl, err := template.New(languageName).Parse(templateContent)
+	if err != nil {
+		panic(err.Error())
+	}
+	var buf bytes.Buffer
+	err = tmpl.Execute(&buf, templateData)
+	if err != nil {
+		panic(err.Error())
+	}
+	files[filepath.Join(languageName, outputFileName+"."+languageName)] = buf.Bytes()
+}
+
+// writeFiles 清空输出目录后写入全部产物
+func writeFiles(dir string, files fileSet) error {
+	if err := os.RemoveAll(dir); err != nil && !os.IsNotExist(err) {
+		return err
+	}
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return err
+	}
+	names := make([]string, 0, len(files))
+	for name := range files {
+		names = append(names, name)
+	}
+	sort.Strings(names)
+	for _, name := range names {
+		full := filepath.Join(dir, name)
+		if err := os.MkdirAll(filepath.Dir(full), 0o755); err != nil {
+			return err
+		}
+		if err := os.WriteFile(full, files[name], 0o644); err != nil {
+			return err
+		}
+	}
+	return nil
+}