--- /dev/null
+/* PSPP - computes sample statistics.
+ Copyright (C) 2006 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 LIBPSPP_LEGACY_ENCODING
+#define LIBPSPP_LEGACY_ENCODING 1
+
+#include <stddef.h>
+#include <libpspp/compiler.h>
+
+/* A legacy character encoding.
+ This exists only to handle the specific legacy EBCDIC-to-ASCII
+ recoding that MODE=360 file handles perform. */
+enum legacy_encoding
+ {
+ LEGACY_ASCII, /* ASCII or similar character set. */
+ LEGACY_EBCDIC, /* IBM EBCDIC character set. */
+
+ /* Native character set. */
+#if 'A' == 0x41
+ LEGACY_NATIVE = LEGACY_ASCII
+#elif 'A' == 0xc1
+ LEGACY_NATIVE = LEGACY_EBCDIC
+#else
+#error Cannot detect native character set.
+#endif
+ };
+
+void legacy_recode (enum legacy_encoding, const char *src,
+ enum legacy_encoding, char *dst, size_t);
+char legacy_to_native (enum legacy_encoding from, char) PURE_FUNCTION;
+char legacy_from_native (enum legacy_encoding to, char) PURE_FUNCTION;
+
+#endif /* libpspp/legacy-encoding.h */