Feature: Add goctl env (#1557)

tools/goctl/util/zipx/zipx.go

@@ -0,0 +1,51 @@
+package zipx
+
+import (
+	"archive/zip"
+	"io"
+	"os"
+	"path/filepath"
+
+	"github.com/zeromicro/go-zero/tools/goctl/util/pathx"
+)
+
+func Unpacking(name, destPath string, mapper func(f *zip.File) bool) error {
+	r, err := zip.OpenReader(name)
+	if err != nil {
+		return err
+	}
+	defer r.Close()
+
+	for _, file := range r.File {
+		ok := mapper(file)
+		if ok {
+			err = fileCopy(file, destPath)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func fileCopy(file *zip.File, destPath string) error {
+	rc, err := file.Open()
+	if err != nil {
+		return err
+	}
+	defer rc.Close()
+	filename := filepath.Join(destPath, filepath.Base(file.Name))
+	dir := filepath.Dir(filename)
+	err = pathx.MkdirIfNotExist(dir)
+	if err != nil {
+		return err
+	}
+
+	w, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer w.Close()
+	_, err = io.Copy(w, rc)
+	return err
+}