압축 관련 함수 추가

compress.go

@@ -0,0 +1,101 @@
+package common
+
+import (
+	"archive/tar"
+	"archive/zip"
+	"errors"
+	"io"
+	"os"
+	"path"
+
+	"golang.org/x/text/encoding/korean"
+	"golang.org/x/text/transform"
+)
+
+func Unzip(fname string) error {
+	archive, err := zip.OpenReader(fname)
+	if err != nil {
+		os.Remove(fname)
+		return err
+	}
+	defer archive.Close()
+
+	verpath := path.Dir(fname)
+	for _, f := range archive.File {
+		var name string
+		if f.NonUTF8 {
+			name, _, _ = transform.String(korean.EUCKR.NewDecoder(), f.Name)
+		} else {
+			name = f.Name
+		}
+
+		filePath := path.Join(verpath, name)
+
+		if f.FileInfo().IsDir() {
+			os.MkdirAll(filePath, os.ModePerm)
+			continue
+		}
+
+		if err := os.MkdirAll(path.Dir(filePath), os.ModePerm); err != nil {
+			return err
+		}
+
+		dstFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
+		if err != nil {
+			return err
+		}
+
+		fileInArchive, err := f.Open()
+		if err != nil {
+			return err
+		}
+
+		if _, err := io.Copy(dstFile, fileInArchive); err != nil {
+			return err
+		}
+
+		dstFile.Close()
+		fileInArchive.Close()
+	}
+	return nil
+}
+
+func Untar(fname string) error {
+	file, err := os.Open(fname)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	verpath := path.Dir(fname)
+	tarReader := tar.NewReader(file)
+	for {
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+
+		switch header.Typeflag {
+		case tar.TypeDir:
+			if err := os.MkdirAll(path.Join(verpath, header.Name), 0755); err != nil {
+				return err
+			}
+		case tar.TypeReg:
+			fileWriter, err := os.Create(path.Join(verpath, header.Name))
+			if err != nil {
+				return err
+			}
+			defer fileWriter.Close()
+
+			if _, err := io.Copy(fileWriter, tarReader); err != nil {
+				return err
+			}
+		default:
+			return errors.New("unknown type")
+		}
+	}
+	return nil
+}