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kratos/tool/protobuf/pkg/project/project.go

121 lines
3.2 KiB

package project
import (
"os"
"path/filepath"
"strings"
"github.com/pkg/errors"
"github.com/siddontang/go/ioutil2"
"github.com/go-kratos/kratos/tool/protobuf/pkg/utils"
)
// if proto file is inside a project (that has a /api directory)
// this present a project info
// 必须假设proto文件的路径就是相对work-dir的路径,否则无法找到proto文件以及对应的project
type ProjectInfo struct {
// AbsolutePath of the project
AbsolutePath string
// ImportPath of project
ImportPath string
// dir name of project
Name string
// parent dir of project, maybe empty
Department string
// grandma dir of project , maybe empty
Typ string
HasInternalPkg bool
// 从工作目录(working directory)到project目录的相对路径 比如a/b .. ../a
// 作用是什么?
// 假设目录结构是
// -project
// - api/api.proto
// - internal/service
// 我想在 internal/service下生成一个文件 service.go
// work-dir 为 project/api
// proto 生成命令为 protoc --xx_out=. api.proto
// 那么在 protoc plugin 中的文件输出路径就得是 ../internal/service/ => {pathRefToProj}internal/service
//
PathRefToProj string
}
func NewProjInfo(file string, modDirName string, modImportPath string) (projInfo *ProjectInfo, err error) {
projInfo = &ProjectInfo{}
wd, err := os.Getwd()
if err != nil {
panic("cannot get working directory")
}
protoAbs := wd + "/" + file
protoAbs, _ = filepath.Abs(protoAbs)
if !ioutil2.FileExists(protoAbs) {
return nil, errors.Errorf("Cannot find proto file in current dir %s, file: %s ", wd, file)
}
//appIndex := strings.Index(wd, modDirName)
//if appIndex == -1 {
// err = errors.New("not in " + modDirName)
// return nil, err
//}
projPath := LookupProjPath(protoAbs)
if projPath == "" {
err = errors.New("not in project")
return nil, err
}
rel, _ := filepath.Rel(wd, projPath)
projInfo.PathRefToProj = rel
projInfo.AbsolutePath = projPath
if ioutil2.FileExists(projPath + "/internal") {
projInfo.HasInternalPkg = true
}
i := strings.Index(projInfo.AbsolutePath, modDirName)
if i == -1 {
err = errors.Errorf("project is not inside module, project=%s, module=%s", projPath, modDirName)
return nil, err
}
relativePath := projInfo.AbsolutePath[i+len(modDirName):]
projInfo.ImportPath = modImportPath + relativePath
projInfo.Name = filepath.Base(projPath)
if p := filepath.Dir(projPath); p != "/" {
projInfo.Department = filepath.Base(p)
if p = filepath.Dir(p); p != "/" {
projInfo.Typ = filepath.Base(p)
}
}
return projInfo, nil
}
// LookupProjPath get project path by proto absolute path
// assume that proto is in the project's api directory
func LookupProjPath(protoAbs string) (result string) {
f := func(protoAbs string, dirs []string) string {
lastIndex := len(protoAbs)
curPath := protoAbs
for lastIndex > 0 {
found := true
for _, d := range dirs {
if !utils.IsDir(curPath + "/" + d) {
found = false
break
}
}
if found {
return curPath
}
lastIndex = strings.LastIndex(curPath, string(os.PathSeparator))
curPath = protoAbs[:lastIndex]
}
result = ""
return result
}
firstStep := f(protoAbs, []string{"cmd", "api"})
if firstStep != "" {
return firstStep
}
return f(protoAbs, []string{"api"})
}