1/*-
2 * Copyright (c) 1992, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 *	Keith Bostic.  All rights reserved.
6 * Copyright (c) 2011, 2012
7 *	Zhihao Yuan.  All rights reserved.
8 *
9 * See the LICENSE file for redistribution information.
10 *
11 *	$Id: conv.h,v 2.32 2013/03/11 01:20:53 zy Exp $
12 */
13
14#ifdef USE_ICONV
15#include <iconv.h>
16#ifdef ICONV_TRADITIONAL
17typedef char **		iconv_src_t;
18#else
19typedef char const **	iconv_src_t;
20#endif
21#else
22typedef int	iconv_t;
23#endif
24
25/*
26 * XXX
27 * We can not use MB_CUR_MAX here, since UTF-8 may report it as 6, but
28 * a sequence longer than 4 is deprecated by RFC 3629.
29 */
30#define KEY_NEEDSWIDE(sp, ch)						\
31	(INTISWIDE(ch) && KEY_LEN(sp, ch) <= 4)
32#define KEY_COL(sp, ch)							\
33	(KEY_NEEDSWIDE(sp, ch) ? CHAR_WIDTH(sp, ch) : KEY_LEN(sp, ch))
34
35enum { IC_FE_CHAR2INT, IC_FE_INT2CHAR, IC_IE_CHAR2INT, IC_IE_TO_UTF16 };
36
37struct _conv_win {
38	union {
39		char 	*c;
40		CHAR_T	*wc;
41	}	bp1;
42	size_t	blen1;
43};
44
45typedef int (*char2wchar_t)
46    (SCR *, const char *, ssize_t, struct _conv_win *, size_t *, CHAR_T **);
47typedef int (*wchar2char_t)
48    (SCR *, const CHAR_T *, ssize_t, struct _conv_win *, size_t *, char **);
49
50struct _conv {
51	char2wchar_t	sys2int;
52	wchar2char_t	int2sys;
53	char2wchar_t	file2int;
54	wchar2char_t	int2file;
55	char2wchar_t	input2int;
56	iconv_t		id[IC_IE_TO_UTF16 + 1];
57};
58