+/*
+
+ * Copyright (c) 1984, 1985, 1986 AT&T
+ * All Rights Reserved
+
+ * THIS IS UNPUBLISHED PROPRIETARY SOURCE
+ * CODE OF AT&T.
+ * The copyright notice above does not
+ * evidence any actual or intended
+ * publication of such source code.
+
+ */
+
+/* @(#)national.h 1.1 */
+
+/*
+ * national.h - definitions for international character sets
+ *
+ * David Korn
+ * AT&T Bell Laboratories
+ * Room 5D-112
+ * Murray Hill, N. J. 07974
+ * Tel. x7975
+ *
+ */
+
+/*
+ * This data must be defined for each country in defs.c
+ */
+
+#ifndef HIGHBIT
+# define HIGHBIT 0x80
+#endif /* HIGHBIT */
+
+#ifndef ESS_MAXCHAR /* allow multiple includes */
+
+/*
+ * This section may change from country to country
+ */
+
+#define ESS_MAXCHAR 2 /* Maximum number of non-escape bytes
+ for any and all character sets */
+#define CCS1_IN_SIZE 2
+#define CCS1_OUT_SIZE 2
+#define CCS2_IN_SIZE 1
+#define CCS2_OUT_SIZE 1
+#define CCS3_IN_SIZE 2
+#define CCS3_OUT_SIZE 2
+
+/*
+ * This part is generic
+ */
+
+#define MARKER 0x100 /* Must be invalid character */
+#define ESS2 0x8e /* Escape to char set 2 */
+#define ESS3 0x8f /* Escape to char set 3 */
+#define ESS_SETMASK (3<<(7*ESS_MAXCHAR)) /* character set bits */
+
+#define echarset(c) ((c)==ESS3?3:((c)==ESS2)?2:((c)>>7)&1)
+#define icharset(i) ((i)>>(7*ESS_MAXCHAR)&3)
+
+#define in_csize(s) int_charsize[s]
+#define out_csize(s) int_charsize[s+4]
+
+extern char int_charsize[8];
+
+#endif /* ESS_MAXCHAR */