488 lines
14 KiB
C
488 lines
14 KiB
C
/*
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Copyright (c) 2006-2020 Chung, Hyung-Hwan. All rights reserved.
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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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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <hawk-chr.h>
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#include "hawk-prv.h"
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/* ---------------------------------------------------------- */
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#include "uch-prop.h"
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#include "uch-case.h"
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/* ---------------------------------------------------------- */
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#define UCH_PROP_MAP_INDEX(c) ((c) / HAWK_COUNTOF(uch_prop_page_0000))
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#define UCH_PROP_PAGE_INDEX(c) ((c) % HAWK_COUNTOF(uch_prop_page_0000))
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#define UCH_CASE_MAP_INDEX(c) ((c) / HAWK_COUNTOF(uch_case_page_0000))
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#define UCH_CASE_PAGE_INDEX(c) ((c) % HAWK_COUNTOF(uch_case_page_0000))
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#define UCH_IS_TYPE(c,type) \
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((c) >= 0 && (c) <= UCH_PROP_MAX && \
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(uch_prop_map[UCH_PROP_MAP_INDEX(c)][UCH_PROP_PAGE_INDEX(c)] & (type)) != 0)
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int hawk_is_uch_type (hawk_uch_t c, hawk_uch_prop_t type)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, type);
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}
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int hawk_is_uch_upper (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_UPPER);
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}
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int hawk_is_uch_lower (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_LOWER);
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}
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int hawk_is_uch_alpha (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_ALPHA);
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}
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int hawk_is_uch_digit (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_DIGIT);
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}
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int hawk_is_uch_xdigit (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_XDIGIT);
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}
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int hawk_is_uch_alnum (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_ALNUM);
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}
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int hawk_is_uch_space (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_SPACE);
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}
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int hawk_is_uch_print (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_PRINT);
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}
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int hawk_is_uch_graph (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_GRAPH);
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}
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int hawk_is_uch_cntrl (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_CNTRL);
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}
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int hawk_is_uch_punct (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_PUNCT);
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}
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int hawk_is_uch_blank (hawk_uch_t c)
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{
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return UCH_IS_TYPE((hawk_uchu_t)c, HAWK_UCH_PROP_BLANK);
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}
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hawk_uch_t hawk_to_uch_upper (hawk_uch_t c)
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{
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hawk_uchu_t uc = (hawk_uchu_t)c;
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if (uc >= 0 && uc <= UCH_CASE_MAX)
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{
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uch_case_page_t* page;
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page = uch_case_map[UCH_CASE_MAP_INDEX(uc)];
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return uc - page[UCH_CASE_PAGE_INDEX(uc)].upper;
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}
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return c;
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}
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hawk_uch_t hawk_to_uch_lower (hawk_uch_t c)
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{
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hawk_uchu_t uc = (hawk_uchu_t)c;
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if (uc >= 0 && uc <= UCH_CASE_MAX)
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{
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uch_case_page_t* page;
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page = uch_case_map[UCH_CASE_MAP_INDEX(uc)];
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return uc + page[UCH_CASE_PAGE_INDEX(uc)].lower;
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}
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return c;
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}
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/* ---------------------------------------------------------- */
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int hawk_is_bch_type (hawk_bch_t c, hawk_bch_prop_t type)
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{
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switch (type)
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{
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case HAWK_OOCH_PROP_UPPER:
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return hawk_is_bch_upper(c);
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case HAWK_OOCH_PROP_LOWER:
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return hawk_is_bch_lower(c);
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case HAWK_OOCH_PROP_ALPHA:
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return hawk_is_bch_alpha(c);
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case HAWK_OOCH_PROP_DIGIT:
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return hawk_is_bch_digit(c);
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case HAWK_OOCH_PROP_XDIGIT:
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return hawk_is_bch_xdigit(c);
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case HAWK_OOCH_PROP_ALNUM:
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return hawk_is_bch_alnum(c);
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case HAWK_OOCH_PROP_SPACE:
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return hawk_is_bch_space(c);
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case HAWK_OOCH_PROP_PRINT:
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return hawk_is_bch_print(c);
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case HAWK_OOCH_PROP_GRAPH:
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return hawk_is_bch_graph(c);
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case HAWK_OOCH_PROP_CNTRL:
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return hawk_is_bch_cntrl(c);
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case HAWK_OOCH_PROP_PUNCT:
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return hawk_is_bch_punct(c);
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case HAWK_OOCH_PROP_BLANK:
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return hawk_is_bch_blank(c);
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}
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/* must not reach here */
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return 0;
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}
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#if !defined(hawk_to_bch_upper)
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hawk_bch_t hawk_to_bch_upper (hawk_bch_t c)
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{
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if(hawk_is_bch_lower(c)) return c & 95;
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return c;
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}
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#endif
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#if !defined(hawk_to_bch_lower)
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hawk_bch_t hawk_to_bch_lower (hawk_bch_t c)
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{
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if(hawk_is_bch_upper(c)) return c | 32;
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return c;
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}
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#endif
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/* ---------------------------------------------------------- */
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static struct prop_tab_t
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{
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const hawk_bch_t* name;
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int class;
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} prop_tab[] =
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{
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{ "alnum", HAWK_OOCH_PROP_ALNUM },
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{ "alpha", HAWK_OOCH_PROP_ALPHA },
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{ "blank", HAWK_OOCH_PROP_BLANK },
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{ "cntrl", HAWK_OOCH_PROP_CNTRL },
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{ "digit", HAWK_OOCH_PROP_DIGIT },
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{ "graph", HAWK_OOCH_PROP_GRAPH },
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{ "lower", HAWK_OOCH_PROP_LOWER },
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{ "print", HAWK_OOCH_PROP_PRINT },
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{ "punct", HAWK_OOCH_PROP_PUNCT },
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{ "space", HAWK_OOCH_PROP_SPACE },
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{ "upper", HAWK_OOCH_PROP_UPPER },
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{ "xdigit", HAWK_OOCH_PROP_XDIGIT }
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};
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/* ---------------------------------------------------------- */
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int hawk_ucstr_to_uch_prop (const hawk_uch_t* name, hawk_uch_prop_t* id)
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{
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int left = 0, right = HAWK_COUNTOF(prop_tab) - 1, mid;
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while (left <= right)
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{
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int n;
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struct prop_tab_t* kwp;
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/*mid = (left + right) / 2;*/
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mid = left + (right - left) / 2;
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kwp = &prop_tab[mid];
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n = hawk_comp_ucstr_bcstr(name, kwp->name, 0);
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if (n > 0)
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{
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/* if left, right, mid were of hawk_oow_t,
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* you would need the following line.
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if (mid == 0) break;
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*/
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right = mid - 1;
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}
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else if (n < 0) left = mid + 1;
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else
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{
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*id = kwp->class;
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return 0;
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}
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}
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return -1;
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}
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int hawk_uchars_to_uch_prop (const hawk_uch_t* name, hawk_oow_t len, hawk_uch_prop_t* id)
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{
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int left = 0, right = HAWK_COUNTOF(prop_tab) - 1, mid;
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while (left <= right)
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{
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int n;
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struct prop_tab_t* kwp;
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/*mid = (left + right) / 2;*/
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mid = left + (right - left) / 2;
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kwp = &prop_tab[mid];
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n = hawk_comp_uchars_bcstr(name, len, kwp->name, 0);
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if (n < 0)
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{
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/* if left, right, mid were of hawk_oow_t,
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* you would need the following line.
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if (mid == 0) break;
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*/
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right = mid - 1;
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}
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else if (n > 0) left = mid + 1;
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else
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{
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*id = kwp->class;
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return 0;
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}
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}
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return -1;
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}
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/* ---------------------------------------------------------- */
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int hawk_bcstr_to_bch_prop (const hawk_bch_t* name, hawk_bch_prop_t* id)
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{
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int left = 0, right = HAWK_COUNTOF(prop_tab) - 1, mid;
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while (left <= right)
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{
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int n;
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struct prop_tab_t* kwp;
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/*mid = (left + right) / 2;*/
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mid = left + (right - left) / 2;
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kwp = &prop_tab[mid];
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n = hawk_comp_bcstr(name, kwp->name, 0);
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if (n > 0)
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{
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/* if left, right, mid were of hawk_oow_t,
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* you would need the following line.
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if (mid == 0) break;
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*/
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right = mid - 1;
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}
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else if (n < 0) left = mid + 1;
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else
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{
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*id = kwp->class;
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return 0;
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}
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}
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return -1;
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}
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int hawk_bchars_to_bch_prop (const hawk_bch_t* name, hawk_oow_t len, hawk_bch_prop_t* id)
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{
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int left = 0, right = HAWK_COUNTOF(prop_tab) - 1, mid;
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while (left <= right)
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{
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int n;
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struct prop_tab_t* kwp;
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/*mid = (left + right) / 2;*/
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mid = left + (right - left) / 2;
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kwp = &prop_tab[mid];
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n = hawk_comp_bchars_bcstr(name, len, kwp->name, 0);
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if (n < 0)
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{
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/* if left, right, mid were of hawk_oow_t,
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* you would need the following line.
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if (mid == 0) break;
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*/
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right = mid - 1;
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}
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else if (n > 0) left = mid + 1;
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else
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{
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*id = kwp->class;
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return 0;
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}
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}
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return -1;
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}
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/* ----------------------------------------------------------------------- */
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/*
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* See http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
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*/
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struct interval
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{
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int first;
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int last;
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};
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/* auxiliary function for binary search in interval table */
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static int bisearch(hawk_uch_t ucs, const struct interval *table, int max)
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{
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int min = 0;
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int mid;
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if (ucs < table[0].first || ucs > table[max].last) return 0;
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while (max >= min)
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{
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mid = (min + max) / 2;
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if (ucs > table[mid].last) min = mid + 1;
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else if (ucs < table[mid].first) max = mid - 1;
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else return 1;
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}
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return 0;
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}
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/* The following two functions define the column width of an ISO 10646
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* character as follows:
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*
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* - The null character (U+0000) has a column width of 0.
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*
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* - Other C0/C1 control characters and DEL will lead to a return
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* value of -1.
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*
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* - Non-spacing and enclosing combining characters (general
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* category code Mn or Me in the Unicode database) have a
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* column width of 0.
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*
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* - SOFT HYPHEN (U+00AD) has a column width of 1.
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*
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* - Other format characters (general category code Cf in the Unicode
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* database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
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*
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* - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
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* have a column width of 0.
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*
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* - Spacing characters in the East Asian Wide (W) or East Asian
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* Full-width (F) category as defined in Unicode Technical
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* Report #11 have a column width of 2.
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*
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* - All remaining characters (including all printable
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* ISO 8859-1 and WGL4 characters, Unicode control characters,
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* etc.) have a column width of 1.
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*
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* This implementation assumes that wchar_t characters are encoded
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* in ISO 10646.
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*/
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int hawk_get_ucwidth (hawk_uch_t uc)
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{
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/* sorted list of non-overlapping intervals of non-spacing characters */
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/* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
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static const struct interval combining[] = {
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{ 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
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{ 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
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{ 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },
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{ 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },
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{ 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
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{ 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
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{ 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },
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{ 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
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{ 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
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{ 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
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{ 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
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{ 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
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{ 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
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{ 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
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{ 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
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{ 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
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{ 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
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{ 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
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{ 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
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{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
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{ 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },
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{ 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },
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{ 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },
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{ 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },
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{ 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },
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{ 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },
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{ 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },
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{ 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },
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{ 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },
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{ 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },
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{ 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
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{ 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
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{ 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
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{ 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
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{ 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },
|
|
{ 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 },
|
|
{ 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 },
|
|
{ 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF },
|
|
{ 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 },
|
|
{ 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F },
|
|
{ 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B },
|
|
{ 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F },
|
|
{ 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB },
|
|
{ 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },
|
|
{ 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 },
|
|
{ 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },
|
|
{ 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F },
|
|
{ 0xE0100, 0xE01EF }
|
|
};
|
|
|
|
/* test for 8-bit control characters */
|
|
if (uc == 0) return 0;
|
|
if (uc < 32 || (uc >= 0x7f && uc < 0xa0)) return -1;
|
|
|
|
/* binary search in table of non-spacing characters */
|
|
if (bisearch(uc, combining, sizeof(combining) / sizeof(struct interval) - 1)) return 0;
|
|
|
|
/* if we arrive here, uc is not a combining or C0/C1 control character */
|
|
|
|
if (uc >= 0x1100)
|
|
{
|
|
if (uc <= 0x115f || /* Hangul Jamo init. consonants */
|
|
uc == 0x2329 || uc == 0x232a ||
|
|
(uc >= 0x2e80 && uc <= 0xa4cf && uc != 0x303f) || /* CJK ... Yi */
|
|
(uc >= 0xac00 && uc <= 0xd7a3) || /* Hangul Syllables */
|
|
(uc >= 0xf900 && uc <= 0xfaff) || /* CJK Compatibility Ideographs */
|
|
(uc >= 0xfe10 && uc <= 0xfe19) || /* Vertical forms */
|
|
(uc >= 0xfe30 && uc <= 0xfe6f) || /* CJK Compatibility Forms */
|
|
(uc >= 0xff00 && uc <= 0xff60) || /* Fullwidth Forms */
|
|
(uc >= 0xffe0 && uc <= 0xffe6)
|
|
#if (HAWK_SIZEOF_UCH_T > 2)
|
|
||
|
|
(uc >= 0x20000 && uc <= 0x2fffd) ||
|
|
(uc >= 0x30000 && uc <= 0x3fffd)
|
|
#endif
|
|
)
|
|
{
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|