1 files changed, 57 insertions, 0 deletions
diff --git a/contrib/nvi/common/conv.h b/contrib/nvi/common/conv.h
new file mode 100644
index 000000000000..b17c3bb24ace
--- /dev/null
+++ b/contrib/nvi/common/conv.h
@@ -0,0 +1,57 @@
+/*-
+ * Copyright (c) 1992, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 1992, 1993, 1994, 1995, 1996
+ *	Keith Bostic.  All rights reserved.
+ * Copyright (c) 2011, 2012
+ *	Zhihao Yuan.  All rights reserved.
+ *
+ * See the LICENSE file for redistribution information.
+ *
+ *	$Id: conv.h,v 2.32 2013/03/11 01:20:53 zy Exp $
+ */
+
+#ifdef USE_ICONV
+#include <iconv.h>
+#ifdef ICONV_TRADITIONAL
+typedef char **		iconv_src_t;
+#else
+typedef char const **	iconv_src_t;
+#endif
+#else
+typedef int	iconv_t;
+#endif
+
+/*
+ * XXX
+ * We can not use MB_CUR_MAX here, since UTF-8 may report it as 6, but
+ * a sequence longer than 4 is deprecated by RFC 3629.
+ */
+#define KEY_NEEDSWIDE(sp, ch)						\
+	(INTISWIDE(ch) && KEY_LEN(sp, ch) <= 4)
+#define KEY_COL(sp, ch)							\
+	(KEY_NEEDSWIDE(sp, ch) ? CHAR_WIDTH(sp, ch) : KEY_LEN(sp, ch))
+
+enum { IC_FE_CHAR2INT, IC_FE_INT2CHAR, IC_IE_CHAR2INT, IC_IE_TO_UTF16 };
+
+struct _conv_win {
+	union {
+		char 	*c;
+		CHAR_T	*wc;
+	}	bp1;
+	size_t	blen1;
+};
+
+typedef int (*char2wchar_t) 
+    (SCR *, const char *, ssize_t, struct _conv_win *, size_t *, CHAR_T **);
+typedef int (*wchar2char_t) 
+    (SCR *, const CHAR_T *, ssize_t, struct _conv_win *, size_t *, char **);
+
+struct _conv {
+	char2wchar_t	sys2int;
+	wchar2char_t	int2sys;
+	char2wchar_t	file2int;
+	wchar2char_t	int2file;
+	char2wchar_t	input2int;
+	iconv_t		id[IC_IE_TO_UTF16 + 1];
+};