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hyung-hwan
2018-02-05 10:43:25 +00:00
parent a84cd9da09
commit 293222d5c5
47 changed files with 16035 additions and 6174 deletions
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493
lib/utf8.c
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@ -1,7 +1,7 @@
/*
* $Id$
*
Copyright (c) 2014-2015 Chung, Hyung-Hwan. All rights reserved.
Copyright (c) 2014-2017 Chung, Hyung-Hwan. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
@ -26,8 +26,6 @@
#include "hcl-prv.h"
#define HCL_BCLEN_MAX 6
/*
* from RFC 2279 UTF-8, a transformation format of ISO 10646
*
@ -47,7 +45,7 @@ struct __utf8_t
hcl_uint8_t fbyte; /* mask to the first utf8 byte */
hcl_uint8_t mask;
hcl_uint8_t fmask;
int length; /* number of bytes */
int length; /* number of bytes */
};
typedef struct __utf8_t __utf8_t;
@ -66,8 +64,8 @@ static HCL_INLINE __utf8_t* get_utf8_slot (hcl_uch_t uc)
{
__utf8_t* cur, * end;
HCL_ASSERT (HCL_SIZEOF(hcl_bch_t) == 1);
HCL_ASSERT (HCL_SIZEOF(hcl_uch_t) >= 2);
/*HCL_ASSERT (hcl, HCL_SIZEOF(hcl_bch_t) == 1);
HCL_ASSERT (hcl, HCL_SIZEOF(hcl_uch_t) >= 2);*/
end = utf8_table + HCL_COUNTOF(utf8_table);
cur = utf8_table;
@ -112,10 +110,10 @@ hcl_oow_t hcl_utf8touc (const hcl_bch_t* utf8, hcl_oow_t size, hcl_uch_t* uc)
{
__utf8_t* cur, * end;
HCL_ASSERT (utf8 != HCL_NULL);
HCL_ASSERT (size > 0);
HCL_ASSERT (HCL_SIZEOF(hcl_bch_t) == 1);
HCL_ASSERT (HCL_SIZEOF(hcl_uch_t) >= 2);
/*HCL_ASSERT (hcl, utf8 != HCL_NULL);
HCL_ASSERT (hcl, size > 0);
HCL_ASSERT (hcl, HCL_SIZEOF(hcl_bch_t) == 1);
HCL_ASSERT (hcl, HCL_SIZEOF(hcl_uch_t) >= 2);*/
end = utf8_table + HCL_COUNTOF(utf8_table);
cur = utf8_table;
@ -179,342 +177,147 @@ hcl_oow_t hcl_utf8touc (const hcl_bch_t* utf8, hcl_oow_t size, hcl_uch_t* uc)
return 0; /* error - invalid sequence */
}
/* ----------------------------------------------------------------------- */
static HCL_INLINE int bcsn_to_ucsn_with_cmgr (
const hcl_bch_t* bcs, hcl_oow_t* bcslen,
hcl_uch_t* ucs, hcl_oow_t* ucslen, hcl_cmgr_t* cmgr, int all)
{
const hcl_bch_t* p;
int ret = 0;
hcl_oow_t mlen;
if (ucs)
{
/* destination buffer is specified.
* copy the conversion result to the buffer */
hcl_uch_t* q, * qend;
p = bcs;
q = ucs;
qend = ucs + *ucslen;
mlen = *bcslen;
while (mlen > 0)
{
hcl_oow_t n;
if (q >= qend)
{
/* buffer too small */
ret = -2;
break;
}
n = cmgr->bctouc (p, mlen, q);
if (n == 0)
{
/* invalid sequence */
if (all)
{
n = 1;
*q = '?';
}
else
{
ret = -1;
break;
}
}
if (n > mlen)
{
/* incomplete sequence */
if (all)
{
n = 1;
*q = '?';
}
else
{
ret = -3;
break;
}
}
q++;
p += n;
mlen -= n;
}
*ucslen = q - ucs;
*bcslen = p - bcs;
}
else
{
/* no destination buffer is specified. perform conversion
* but don't copy the result. the caller can call this function
* without a buffer to find the required buffer size, allocate
* a buffer with the size and call this function again with
* the buffer. */
hcl_uch_t w;
hcl_oow_t wlen = 0;
p = bcs;
mlen = *bcslen;
while (mlen > 0)
{
hcl_oow_t n;
n = cmgr->bctouc (p, mlen, &w);
if (n == 0)
{
/* invalid sequence */
if (all) n = 1;
else
{
ret = -1;
break;
}
}
if (n > mlen)
{
/* incomplete sequence */
if (all) n = 1;
else
{
ret = -3;
break;
}
}
p += n;
mlen -= n;
wlen += 1;
}
*ucslen = wlen;
*bcslen = p - bcs;
}
return ret;
}
static HCL_INLINE int bcs_to_ucs_with_cmgr (
const hcl_bch_t* bcs, hcl_oow_t* bcslen,
hcl_uch_t* ucs, hcl_oow_t* ucslen, hcl_cmgr_t* cmgr, int all)
{
const hcl_bch_t* bp;
hcl_oow_t mlen, wlen;
int n;
for (bp = bcs; *bp != '\0'; bp++) /* nothing */ ;
mlen = bp - bcs; wlen = *ucslen;
n = bcsn_to_ucsn_with_cmgr (bcs, &mlen, ucs, &wlen, cmgr, all);
if (ucs)
{
/* null-terminate the target buffer if it has room for it. */
if (wlen < *ucslen) ucs[wlen] = '\0';
else n = -2; /* buffer too small */
}
*bcslen = mlen; *ucslen = wlen;
return n;
}
static HCL_INLINE int ucsn_to_bcsn_with_cmgr (
const hcl_uch_t* ucs, hcl_oow_t* ucslen,
hcl_bch_t* bcs, hcl_oow_t* bcslen, hcl_cmgr_t* cmgr)
{
const hcl_uch_t* p = ucs;
const hcl_uch_t* end = ucs + *ucslen;
int ret = 0;
if (bcs)
{
hcl_oow_t rem = *bcslen;
while (p < end)
{
hcl_oow_t n;
if (rem <= 0)
{
ret = -2; /* buffer too small */
break;
}
n = cmgr->uctobc (*p, bcs, rem);
if (n == 0)
{
ret = -1;
break; /* illegal character */
}
if (n > rem)
{
ret = -2; /* buffer too small */
break;
}
bcs += n; rem -= n; p++;
}
*bcslen -= rem;
}
else
{
hcl_bch_t bcsbuf[HCL_BCLEN_MAX];
hcl_oow_t mlen = 0;
while (p < end)
{
hcl_oow_t n;
n = cmgr->uctobc (*p, bcsbuf, HCL_COUNTOF(bcsbuf));
if (n == 0)
{
ret = -1;
break; /* illegal character */
}
/* it assumes that bcsbuf is large enough to hold a character */
HCL_ASSERT (n <= HCL_COUNTOF(bcsbuf));
p++; mlen += n;
}
/* this length excludes the terminating null character.
* this function doesn't even null-terminate the result. */
*bcslen = mlen;
}
*ucslen = p - ucs;
return ret;
}
static int ucs_to_bcs_with_cmgr (
const hcl_uch_t* ucs, hcl_oow_t* ucslen,
hcl_bch_t* bcs, hcl_oow_t* bcslen, hcl_cmgr_t* cmgr)
{
const hcl_uch_t* p = ucs;
int ret = 0;
if (bcs)
{
hcl_oow_t rem = *bcslen;
while (*p != '\0')
{
hcl_oow_t n;
if (rem <= 0)
{
ret = -2;
break;
}
n = cmgr->uctobc (*p, bcs, rem);
if (n == 0)
{
ret = -1;
break; /* illegal character */
}
if (n > rem)
{
ret = -2;
break; /* buffer too small */
}
bcs += n; rem -= n; p++;
}
/* update bcslen to the length of the bcs string converted excluding
* terminating null */
*bcslen -= rem;
/* null-terminate the multibyte sequence if it has sufficient space */
if (rem > 0) *bcs = '\0';
else
{
/* if ret is -2 and cs[cslen] == '\0',
* this means that the bcs buffer was lacking one
* slot for the terminating null */
ret = -2; /* buffer too small */
}
}
else
{
hcl_bch_t bcsbuf[HCL_BCLEN_MAX];
hcl_oow_t mlen = 0;
while (*p != '\0')
{
hcl_oow_t n;
n = cmgr->uctobc (*p, bcsbuf, HCL_COUNTOF(bcsbuf));
if (n == 0)
{
ret = -1;
break; /* illegal character */
}
/* it assumes that bcs is large enough to hold a character */
HCL_ASSERT (n <= HCL_COUNTOF(bcs));
p++; mlen += n;
}
/* this length holds the number of resulting multi-byte characters
* excluding the terminating null character */
*bcslen = mlen;
}
*ucslen = p - ucs; /* the number of wide characters handled. */
return ret;
}
static hcl_cmgr_t utf8_cmgr =
{
hcl_utf8touc,
hcl_uctoutf8
};
int hcl_utf8toucs (const hcl_bch_t* bcs, hcl_oow_t* bcslen, hcl_uch_t* ucs, hcl_oow_t* ucslen)
{
if (*bcslen == ~(hcl_oow_t)0)
{
/* the source is null-terminated. */
return bcs_to_ucs_with_cmgr (bcs, bcslen, ucs, ucslen, &utf8_cmgr, 0);
}
else
{
/* the source is length bound */
return bcsn_to_ucsn_with_cmgr (bcs, bcslen, ucs, ucslen, &utf8_cmgr, 0);
}
}
int hcl_ucstoutf8 (const hcl_uch_t* ucs, hcl_oow_t *ucslen, hcl_bch_t* bcs, hcl_oow_t* bcslen)
{
if (*ucslen == ~(hcl_oow_t)0)
{
/* null-terminated */
return ucs_to_bcs_with_cmgr (ucs, ucslen, bcs, bcslen, &utf8_cmgr);
}
else
{
/* length bound */
return ucsn_to_bcsn_with_cmgr (ucs, ucslen, bcs, bcslen, &utf8_cmgr);
}
}
/*
hcl_oow_t hcl_ucslen (const hcl_uch_t* ucs)
* See http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
*/
struct interval
{
const hcl_uch_t* ptr = ucs;
while (*ptr) ptr = HCL_INCPTR(const hcl_uch_t, ptr, 1);
return HCL_SUBPTR(const hcl_uch_t, ptr, ucs);
int first;
int last;
};
/* auxiliary function for binary search in interval table */
static int bisearch(hcl_uch_t ucs, const struct interval *table, int max)
{
int min = 0;
int mid;
if (ucs < table[0].first || ucs > table[max].last) return 0;
while (max >= min)
{
mid = (min + max) / 2;
if (ucs > table[mid].last) min = mid + 1;
else if (ucs < table[mid].first) max = mid - 1;
else return 1;
}
return 0;
}
/* The following two functions define the column width of an ISO 10646
* character as follows:
*
* - The null character (U+0000) has a column width of 0.
*
* - Other C0/C1 control characters and DEL will lead to a return
* value of -1.
*
* - Non-spacing and enclosing combining characters (general
* category code Mn or Me in the Unicode database) have a
* column width of 0.
*
* - SOFT HYPHEN (U+00AD) has a column width of 1.
*
* - Other format characters (general category code Cf in the Unicode
* database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
*
* - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
* have a column width of 0.
*
* - Spacing characters in the East Asian Wide (W) or East Asian
* Full-width (F) category as defined in Unicode Technical
* Report #11 have a column width of 2.
*
* - All remaining characters (including all printable
* ISO 8859-1 and WGL4 characters, Unicode control characters,
* etc.) have a column width of 1.
*
* This implementation assumes that wchar_t characters are encoded
* in ISO 10646.
*/
int hcl_ucwidth (hcl_uch_t uc)
{
/* sorted list of non-overlapping intervals of non-spacing characters */
/* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
static const struct interval combining[] = {
{ 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
{ 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
{ 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },
{ 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },
{ 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
{ 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
{ 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },
{ 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
{ 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
{ 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
{ 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
{ 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
{ 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
{ 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
{ 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
{ 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
{ 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
{ 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
{ 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
{ 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },
{ 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },
{ 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },
{ 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },
{ 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },
{ 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },
{ 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },
{ 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },
{ 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },
{ 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },
{ 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
{ 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
{ 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
{ 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
{ 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) ||
(uc >= 0x20000 && uc <= 0x2fffd) ||
(uc >= 0x30000 && uc <= 0x3fffd))
{
return 2;
}
}
return 1;
}
*/