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/* $NetBSD: chartype.h,v 1.6 2010/04/20 02:01:13 christos Exp $ */
/*-
* Copyright (c) 2009 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _h_chartype_f
#define _h_chartype_f
#ifdef WIDECHAR
/* Ideally we should also test the value of the define to see if it
* supports non-BMP code points without requiring UTF-16, but nothing
* seems to actually advertise this properly, despite Unicode 3.1 having
* been around since 2001... */
#if !defined(__NetBSD__) && !defined(__sun) && !(defined(__APPLE__) && defined(__MACH__))
#ifndef __STDC_ISO_10646__
/* In many places it is assumed that the first 127 code points are ASCII
* compatible, so ensure wchar_t indeed does ISO 10646 and not some other
* funky encoding that could break us in weird and wonderful ways. */
#error wchar_t must store ISO 10646 characters
#endif
#endif
/* Oh for a <uchar.h> with char32_t and __STDC_UTF_32__ in it...
* ref: ISO/IEC DTR 19769
*/
#if WCHAR_MAX < INT32_MAX
#warning Build environment does not support non-BMP characters
#endif
#define ct_mbtowc mbtowc
#define ct_mbtowc_reset mbtowc(0,0,0)
#define ct_wctomb wctomb
#define ct_wctomb_reset wctomb(0,0)
#define ct_wcstombs wcstombs
#define ct_mbstowcs mbstowcs
#define Char wchar_t
#define Int wint_t
#define FUN(prefix,rest) prefix ## _w ## rest
#define FUNW(type) type ## _w
#define TYPE(type) type ## W
#define FSTR "%ls"
#define STR(x) L ## x
#define UC(c) c
#define Isalpha(x) iswalpha(x)
#define Isalnum(x) iswalnum(x)
#define Isgraph(x) iswgraph(x)
#define Isspace(x) iswspace(x)
#define Isdigit(x) iswdigit(x)
#define Iscntrl(x) iswcntrl(x)
#define Isprint(x) iswprint(x)
#define Isupper(x) iswupper(x)
#define Islower(x) iswlower(x)
#define Toupper(x) towupper(x)
#define Tolower(x) towlower(x)
#define IsASCII(x) (x < 0x100)
#define Strlen(x) wcslen(x)
#define Strchr(s,c) wcschr(s,c)
#define Strrchr(s,c) wcsrchr(s,c)
#define Strstr(s,v) wcsstr(s,v)
#define Strdup(x) wcsdup(x)
#define Strcpy(d,s) wcscpy(d,s)
#define Strncpy(d,s,n) wcsncpy(d,s,n)
#define Strncat(d,s,n) wcsncat(d,s,n)
#define Strcmp(s,v) wcscmp(s,v)
#define Strncmp(s,v,n) wcsncmp(s,v,n)
#define Strcspn(s,r) wcscspn(s,r)
#define Strtol(p,e,b) wcstol(p,e,b)
#define Width(c) wcwidth(c)
#else /* NARROW */
#define ct_mbtowc error
#define ct_mbtowc_reset
#define ct_wctomb error
#define ct_wctomb_reset
#define ct_wcstombs(a, b, c) (strncpy(a, b, c), strlen(a))
#define ct_mbstowcs(a, b, c) (strncpy(a, b, c), strlen(a))
#define Char char
#define Int int
#define FUN(prefix,rest) prefix ## _ ## rest
#define FUNW(type) type
#define TYPE(type) type
#define FSTR "%s"
#define STR(x) x
#define UC(c) (unsigned char)(c)
#define Isalpha(x) isalpha((unsigned char)x)
#define Isalnum(x) isalnum((unsigned char)x)
#define Isgraph(x) isgraph((unsigned char)x)
#define Isspace(x) isspace((unsigned char)x)
#define Isdigit(x) isdigit((unsigned char)x)
#define Iscntrl(x) iscntrl((unsigned char)x)
#define Isprint(x) isprint((unsigned char)x)
#define Isupper(x) isupper((unsigned char)x)
#define Islower(x) islower((unsigned char)x)
#define Toupper(x) toupper((unsigned char)x)
#define Tolower(x) tolower((unsigned char)x)
#define IsASCII(x) isascii((unsigned char)x)
#define Strlen(x) strlen(x)
#define Strchr(s,c) strchr(s,c)
#define Strrchr(s,c) strrchr(s,c)
#define Strstr(s,v) strstr(s,v)
#define Strdup(x) strdup(x)
#define Strcpy(d,s) strcpy(d,s)
#define Strncpy(d,s,n) strncpy(d,s,n)
#define Strncat(d,s,n) strncat(d,s,n)
#define Strcmp(s,v) strcmp(s,v)
#define Strncmp(s,v,n) strncmp(s,v,n)
#define Strcspn(s,r) strcspn(s,r)
#define Strtol(p,e,b) strtol(p,e,b)
#define Width(c) 1
#endif
#ifdef WIDECHAR
/*
* Conversion buffer
*/
typedef struct ct_buffer_t {
char *cbuff;
size_t csize;
Char *wbuff;
size_t wsize;
} ct_buffer_t;
#define ct_encode_string __ct_encode_string
/* Encode a wide character string and return the UTF-8 encoded result. */
public char *ct_encode_string(const Char *, ct_buffer_t *);
#define ct_decode_string __ct_decode_string
/* Decode a (multi)?byte string and return the wide character string result. */
public Char *ct_decode_string(const char *, ct_buffer_t *);
/* Decode a (multi)?byte argv string array.
* The pointer returned must be free()d when done. */
protected Char **ct_decode_argv(int, const char *[], ct_buffer_t *);
/* Resizes the conversion buffer(s) if needed. */
protected void ct_conv_buff_resize(ct_buffer_t *, size_t, size_t);
protected ssize_t ct_encode_char(char *, size_t, Char);
protected size_t ct_enc_width(Char);
#define ct_free_argv(s) el_free(s)
#else
#define ct_encode_string(s, b) (s)
#define ct_decode_string(s, b) (s)
#define ct_decode_argv(l, s, b) (s)
#define ct_conv_buff_resize(b, os, ns)
#define ct_encode_char(d, l, s) (*d = s, 1)
#define ct_free_argv(s)
#endif
#ifndef NARROWCHAR
/* Encode a characted into the destination buffer, provided there is sufficent
* buffer space available. Returns the number of bytes used up (zero if the
* character cannot be encoded, -1 if there was not enough space available). */
/* The maximum buffer size to hold the most unwieldly visual representation,
* in this case \U+nnnnn. */
#define VISUAL_WIDTH_MAX 8
/* The terminal is thought of in terms of X columns by Y lines. In the cases
* where a wide character takes up more than one column, the adjacent
* occupied column entries will contain this faux character. */
#define MB_FILL_CHAR ((Char)-1)
/* Visual width of character c, taking into account ^? , \0177 and \U+nnnnn
* style visual expansions. */
protected int ct_visual_width(Char);
/* Turn the given character into the appropriate visual format, matching
* the width given by ct_visual_width(). Returns the number of characters used
* up, or -1 if insufficient space. Buffer length is in count of Char's. */
protected ssize_t ct_visual_char(Char *, size_t, Char);
/* Convert the given string into visual format, using the ct_visual_char()
* function. Uses a static buffer, so not threadsafe. */
protected const Char *ct_visual_string(const Char *);
/* printable character, use ct_visual_width() to find out display width */
#define CHTYPE_PRINT ( 0)
/* control character found inside the ASCII portion of the charset */
#define CHTYPE_ASCIICTL (-1)
/* a \t */
#define CHTYPE_TAB (-2)
/* a \n */
#define CHTYPE_NL (-3)
/* non-printable character */
#define CHTYPE_NONPRINT (-4)
/* classification of character c, as one of the above defines */
protected int ct_chr_class(Char c);
#endif
#endif /* _chartype_f */
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