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Diffstat (limited to 'bin/1sh/libedit/chartype.h')
| -rw-r--r-- | bin/1sh/libedit/chartype.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/bin/1sh/libedit/chartype.h b/bin/1sh/libedit/chartype.h new file mode 100644 index 00000000..4cdd981d --- /dev/null +++ b/bin/1sh/libedit/chartype.h @@ -0,0 +1,119 @@ +/* $NetBSD: chartype.h,v 1.35 2017/05/22 19:16:25 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. + */ + +#ifndef _h_chartype_f +#define _h_chartype_f + +/* 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__)) && \ + !defined(__OpenBSD__) && \ + !defined(__FreeBSD__) && \ + !defined(__DragonFly__) +#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 + +/* + * Conversion buffer + */ +typedef struct ct_buffer_t { + char *cbuff; + size_t csize; + wchar_t *wbuff; + size_t wsize; +} ct_buffer_t; + +/* Encode a wide-character string and return the UTF-8 encoded result. */ +char *ct_encode_string(const wchar_t *, ct_buffer_t *); + +/* Decode a (multi)?byte string and return the wide-character string result. */ +wchar_t *ct_decode_string(const char *, ct_buffer_t *); + +/* Decode a (multi)?byte argv string array. + * The pointer returned must be free()d when done. */ +libedit_private wchar_t **ct_decode_argv(int, const char *[], ct_buffer_t *); + +/* Encode a character into the destination buffer, provided there is sufficient + * 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). */ +libedit_private ssize_t ct_encode_char(char *, size_t, wchar_t); +libedit_private size_t ct_enc_width(wchar_t); + +/* The maximum buffer size to hold the most unwieldy 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 ((wchar_t)-1) + +/* Visual width of character c, taking into account ^? , \0177 and \U+nnnnn + * style visual expansions. */ +libedit_private int ct_visual_width(wchar_t); + +/* 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 wchar_t's. */ +libedit_private ssize_t ct_visual_char(wchar_t *, size_t, wchar_t); + +/* Convert the given string into visual format, using the ct_visual_char() + * function. Uses a static buffer, so not threadsafe. */ +libedit_private const wchar_t *ct_visual_string(const wchar_t *, ct_buffer_t *); + + +/* 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 */ +libedit_private int ct_chr_class(wchar_t c); + +#endif /* _chartype_f */ |