250 lines
8.2 KiB
C
250 lines
8.2 KiB
C
/* $NetBSD: chartype.h,v 1.15 2015/05/17 13:14:41 christos Exp $ */
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/*-
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* Copyright (c) 2009 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _h_chartype_f
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#define _h_chartype_f
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#ifdef WIDECHAR
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/* Ideally we should also test the value of the define to see if it
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* supports non-BMP code points without requiring UTF-16, but nothing
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* seems to actually advertise this properly, despite Unicode 3.1 having
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* been around since 2001... */
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#if !defined(__NetBSD__) && !defined(__sun) && !(defined(__APPLE__) && defined(__MACH__)) && !defined(__OpenBSD__) && !defined(__FreeBSD__)
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#ifndef __STDC_ISO_10646__
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/* In many places it is assumed that the first 127 code points are ASCII
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* compatible, so ensure wchar_t indeed does ISO 10646 and not some other
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* funky encoding that could break us in weird and wonderful ways. */
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#error wchar_t must store ISO 10646 characters
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#endif
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#endif
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/* Oh for a <uchar.h> with char32_t and __STDC_UTF_32__ in it...
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* ref: ISO/IEC DTR 19769
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*/
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#if WCHAR_MAX < INT32_MAX
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#warning Build environment does not support non-BMP characters
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#endif
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#define ct_mbtowc mbtowc
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#define ct_mbtowc_reset mbtowc(0,0,(size_t)0)
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#define ct_wctomb wctomb
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#define ct_wctomb_reset wctomb(0,0)
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#define ct_wcstombs wcstombs
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#define ct_mbstowcs mbstowcs
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#define Char wchar_t
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#define Int wint_t
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#define FUN(prefix,rest) prefix ## _w ## rest
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#define FUNW(type) type ## _w
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#define TYPE(type) type ## W
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#define FCHAR "%lc"
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#define FSTR "%ls"
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#define STR(x) L ## x
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#define UC(c) c
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#define Isalpha(x) iswalpha(x)
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#define Isalnum(x) iswalnum(x)
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#define Isgraph(x) iswgraph(x)
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#define Isspace(x) iswspace(x)
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#define Isdigit(x) iswdigit(x)
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#define Iscntrl(x) iswcntrl(x)
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#define Isprint(x) iswprint(x)
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#define Isupper(x) iswupper(x)
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#define Islower(x) iswlower(x)
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#define Toupper(x) towupper(x)
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#define Tolower(x) towlower(x)
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#define IsASCII(x) (x < 0x100)
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#define Strlen(x) wcslen(x)
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#define Strchr(s,c) wcschr(s,c)
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#define Strrchr(s,c) wcsrchr(s,c)
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#define Strstr(s,v) wcsstr(s,v)
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#define Strdup(x) wcsdup(x)
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#define Strcpy(d,s) wcscpy(d,s)
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#define Strncpy(d,s,n) wcsncpy(d,s,n)
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#define Strncat(d,s,n) wcsncat(d,s,n)
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#define Strcmp(s,v) wcscmp(s,v)
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#define Strncmp(s,v,n) wcsncmp(s,v,n)
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#define Strcspn(s,r) wcscspn(s,r)
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#define Strtol(p,e,b) wcstol(p,e,b)
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static inline int
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Width(wchar_t c)
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{
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int w = wcwidth(c);
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return w < 0 ? 0 : w;
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}
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#else /* NARROW */
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#define ct_mbtowc error
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#define ct_mbtowc_reset
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#define ct_wctomb error
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#define ct_wctomb_reset
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#define ct_wcstombs(a, b, c) (strncpy(a, b, c), strlen(a))
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#define ct_mbstowcs(a, b, c) (strncpy(a, b, c), strlen(a))
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#define Char char
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#define Int int
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#define FUN(prefix,rest) prefix ## _ ## rest
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#define FUNW(type) type
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#define TYPE(type) type
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#define FCHAR "%c"
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#define FSTR "%s"
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#define STR(x) x
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#define UC(c) (unsigned char)(c)
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#define Isalpha(x) isalpha((unsigned char)x)
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#define Isalnum(x) isalnum((unsigned char)x)
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#define Isgraph(x) isgraph((unsigned char)x)
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#define Isspace(x) isspace((unsigned char)x)
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#define Isdigit(x) isdigit((unsigned char)x)
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#define Iscntrl(x) iscntrl((unsigned char)x)
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#define Isprint(x) isprint((unsigned char)x)
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#define Isupper(x) isupper((unsigned char)x)
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#define Islower(x) islower((unsigned char)x)
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#define Toupper(x) toupper((unsigned char)x)
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#define Tolower(x) tolower((unsigned char)x)
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#define IsASCII(x) isascii((unsigned char)x)
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#define Strlen(x) strlen(x)
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#define Strchr(s,c) strchr(s,c)
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#define Strrchr(s,c) strrchr(s,c)
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#define Strstr(s,v) strstr(s,v)
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#define Strdup(x) strdup(x)
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#define Strcpy(d,s) strcpy(d,s)
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#define Strncpy(d,s,n) strncpy(d,s,n)
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#define Strncat(d,s,n) strncat(d,s,n)
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#define Strcmp(s,v) strcmp(s,v)
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#define Strncmp(s,v,n) strncmp(s,v,n)
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#define Strcspn(s,r) strcspn(s,r)
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#define Strtol(p,e,b) strtol(p,e,b)
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#define Width(c) 1
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#endif
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#ifdef WIDECHAR
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/*
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* Conversion buffer
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*/
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typedef struct ct_buffer_t {
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char *cbuff;
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size_t csize;
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Char *wbuff;
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size_t wsize;
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} ct_buffer_t;
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#define ct_encode_string __ct_encode_string
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/* Encode a wide-character string and return the UTF-8 encoded result. */
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public char *ct_encode_string(const Char *, ct_buffer_t *);
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#define ct_decode_string __ct_decode_string
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/* Decode a (multi)?byte string and return the wide-character string result. */
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public Char *ct_decode_string(const char *, ct_buffer_t *);
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/* Decode a (multi)?byte argv string array.
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* The pointer returned must be free()d when done. */
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protected Char **ct_decode_argv(int, const char *[], ct_buffer_t *);
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/* Resizes the conversion buffer(s) if needed. */
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protected int ct_conv_cbuff_resize(ct_buffer_t *, size_t);
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protected int ct_conv_wbuff_resize(ct_buffer_t *, size_t);
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protected ssize_t ct_encode_char(char *, size_t, Char);
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protected size_t ct_enc_width(Char);
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#define ct_free_argv(s) el_free(s)
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#else
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#define ct_encode_string(s, b) (s)
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#define ct_decode_string(s, b) (s)
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#define ct_decode_argv(l, s, b) (s)
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#define ct_conv_cbuff_resize(b, s) ((s) == (0))
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#define ct_conv_wbuff_resize(b, s) ((s) == (0))
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#define ct_encode_char(d, l, s) (*d = s, 1)
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#define ct_free_argv(s)
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#endif
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#ifndef NARROWCHAR
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/* Encode a characted into the destination buffer, provided there is sufficient
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* buffer space available. Returns the number of bytes used up (zero if the
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* character cannot be encoded, -1 if there was not enough space available). */
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/* The maximum buffer size to hold the most unwieldy visual representation,
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* in this case \U+nnnnn. */
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#define VISUAL_WIDTH_MAX ((size_t)8)
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/* The terminal is thought of in terms of X columns by Y lines. In the cases
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* where a wide character takes up more than one column, the adjacent
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* occupied column entries will contain this faux character. */
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#define MB_FILL_CHAR ((Char)-1)
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/* Visual width of character c, taking into account ^? , \0177 and \U+nnnnn
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* style visual expansions. */
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protected int ct_visual_width(Char);
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/* Turn the given character into the appropriate visual format, matching
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* the width given by ct_visual_width(). Returns the number of characters used
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* up, or -1 if insufficient space. Buffer length is in count of Char's. */
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protected ssize_t ct_visual_char(Char *, size_t, Char);
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/* Convert the given string into visual format, using the ct_visual_char()
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* function. Uses a static buffer, so not threadsafe. */
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protected const Char *ct_visual_string(const Char *);
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/* printable character, use ct_visual_width() to find out display width */
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#define CHTYPE_PRINT ( 0)
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/* control character found inside the ASCII portion of the charset */
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#define CHTYPE_ASCIICTL (-1)
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/* a \t */
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#define CHTYPE_TAB (-2)
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/* a \n */
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#define CHTYPE_NL (-3)
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/* non-printable character */
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#define CHTYPE_NONPRINT (-4)
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/* classification of character c, as one of the above defines */
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protected int ct_chr_class(Char c);
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#endif
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#endif /* _chartype_f */
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