diff options
Diffstat (limited to 'src/chartype.h')
| -rw-r--r-- | src/chartype.h | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/chartype.h b/src/chartype.h new file mode 100644 index 0000000..12fa9ac --- /dev/null +++ b/src/chartype.h @@ -0,0 +1,254 @@ +/* $NetBSD: chartype.h,v 1.10 2011/11/16 01:45:10 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +#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 + +#ifndef HAVE_WCSDUP +wchar_t *wcsdup(const wchar_t *s); +#endif + +#define ct_mbtowc mbtowc +#define ct_mbtowc_reset mbtowc(0,0,(size_t)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) + +static inline int +Width(wchar_t c) +{ + int w = wcwidth(c); + return w < 0 ? 0 : w; +} + +#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 ((size_t)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 */ |