--- /dev/null
+/* PSPP - computes sample statistics.
+ Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
+ Written by Ben Pfaff <blp@gnu.org>.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
+
+#ifndef DFM_WRITE_H
+#define DFM_WRITE_H
+
+/* Writing data files. */
+
+#include <stdbool.h>
+#include <stddef.h>
+
+struct file_handle;
+struct dfm_writer *dfm_open_writer (struct file_handle *);
+bool dfm_close_writer (struct dfm_writer *);
+bool dfm_write_error (const struct dfm_writer *);
+int dfm_put_record (struct dfm_writer *, const char *rec, size_t len);
+
+#endif /* data-writer.h */