diff --git a/main.go b/main.go
index c0cd418..e8e171b 100644
--- a/main.go
+++ b/main.go
@@ -211,54 +211,13 @@ func (a *Archiver) Close() error {
 }
 
 func (a *Archiver) archive(f *File) error {
-	err := a.writeFile(f)
-
+	fileWriter, err := a.w.CreateRaw(f.Header)
 	if err != nil {
 		return err
 	}
 
-	return nil
-}
+	_, err = io.Copy(fileWriter, &f.CompressedData)
 
-func (a *Archiver) writeFile(f *File) error {
-	writer, err := a.createFile(f.Info)
-	if err != nil {
-		return err
-	}
-
-	if f.Info.IsDir() {
-		return nil
-	}
-
-	file, err := os.Open(f.Path)
-	if err != nil {
-		return err
-	}
-
-	err = a.writeContents(writer, file)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (a *Archiver) createFile(info fs.FileInfo) (io.Writer, error) {
-	header, err := zip.FileInfoHeader(info)
-	if err != nil {
-		return nil, err
-	}
-
-	writer, err := a.w.CreateHeader(header)
-	if err != nil {
-		return nil, err
-	}
-
-	return writer, nil
-}
-
-func (a *Archiver) writeContents(w io.Writer, r io.Reader) error {
-	_, err := io.Copy(w, r)
 	if err != nil {
 		return err
 	}
@@ -385,82 +344,5 @@ func (a *Archiver) dirArchive() bool {
 	return a.chroot != ""
 }
 
-type FileHeader struct {
-	// Name is the name of the file.
-	//
-	// It must be a relative path, not start with a drive letter (such as "C:"),
-	// and must use forward slashes instead of back slashes. A trailing slash
-	// indicates that this file is a directory and should have no data.
-	Name string
-
-	// Comment is any arbitrary user-defined string shorter than 64KiB.
-	Comment string
-
-	// NonUTF8 indicates that Name and Comment are not encoded in UTF-8.
-	//
-	// By specification, the only other encoding permitted should be CP-437,
-	// but historically many ZIP readers interpret Name and Comment as whatever
-	// the system's local character encoding happens to be.
-	//
-	// This flag should only be set if the user intends to encode a non-portable
-	// ZIP file for a specific localized region. Otherwise, the Writer
-	// automatically sets the ZIP format's UTF-8 flag for valid UTF-8 strings.
-	NonUTF8 bool
-
-	CreatorVersion uint16
-	ReaderVersion  uint16
-	Flags          uint16
-
-	// Method is the compression method. If zero, Store is used.
-	Method uint16
-
-	// Modified is the modified time of the file.
-	//
-	// When reading, an extended timestamp is preferred over the legacy MS-DOS
-	// date field, and the offset between the times is used as the timezone.
-	// If only the MS-DOS date is present, the timezone is assumed to be UTC.
-	//
-	// When writing, an extended timestamp (which is timezone-agnostic) is
-	// always emitted. The legacy MS-DOS date field is encoded according to the
-	// location of the Modified time.
-	Modified time.Time
-
-	// ModifiedTime is an MS-DOS-encoded time.
-	//
-	// Deprecated: Use Modified instead.
-	ModifiedTime uint16
-
-	// ModifiedDate is an MS-DOS-encoded date.
-	//
-	// Deprecated: Use Modified instead.
-	ModifiedDate uint16
-
-	// CRC32 is the CRC32 checksum of the file content.
-	CRC32 uint32
-
-	// CompressedSize is the compressed size of the file in bytes.
-	// If either the uncompressed or compressed size of the file
-	// does not fit in 32 bits, CompressedSize is set to ^uint32(0).
-	//
-	// Deprecated: Use CompressedSize64 instead.
-	CompressedSize uint32
-
-	// UncompressedSize is the compressed size of the file in bytes.
-	// If either the uncompressed or compressed size of the file
-	// does not fit in 32 bits, CompressedSize is set to ^uint32(0).
-	//
-	// Deprecated: Use UncompressedSize64 instead.
-	UncompressedSize uint32
-
-	// CompressedSize64 is the compressed size of the file in bytes.
-	CompressedSize64 uint64
-
-	// UncompressedSize64 is the uncompressed size of the file in bytes.
-	UncompressedSize64 uint64
-
-	Extra         []byte
-	ExternalAttrs uint32 // Meaning depends on CreatorVersion
-}
-
 func main() {
 }