hyung-hwan/hawk
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

limited the utf8 ranges

Browse Source
This commit is contained in:
hyung-hwan
2022-01-07 02:04:20 +00:00
parent 3b51b1290e
commit 886b67e602
1 changed files with 12 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
hawk/lib/utf8.c
View File

@ -26,6 +26,8 @@
#include "hawk-prv.h"
/*#define RETAIN_RFC2279 1*/
/*
* from RFC 2279 UTF-8, a transformation format of ISO 10646
*
@ -36,6 +38,12 @@
* 4:4 00010000-001FFFFF 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
* inv 00200000-03FFFFFF 111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
* inv 04000000-7FFFFFFF 1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
*
* RFC3629 limits the ranges like this:
* 1:2 00000000-0000007F 0xxxxxxx
* 2:2 00000080-000007FF 110xxxxx 10xxxxxx
* 3:2 00000800-0000FFFF 1110xxxx 10xxxxxx 10xxxxxx
* 4:4 00010000-0010FFFF 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
*/
struct __utf8_t
@ -55,9 +63,13 @@ static __utf8_t utf8_table[] =
{0x00000000ul, 0x0000007Ful, 0x00, 0x80, 0x7F, 1},
{0x00000080ul, 0x000007FFul, 0xC0, 0xE0, 0x1F, 2},
{0x00000800ul, 0x0000FFFFul, 0xE0, 0xF0, 0x0F, 3},
#if defined(RETAIN_RFC2279)
{0x00010000ul, 0x001FFFFFul, 0xF0, 0xF8, 0x07, 4},
{0x00200000ul, 0x03FFFFFFul, 0xF8, 0xFC, 0x03, 5},
{0x04000000ul, 0x7FFFFFFFul, 0xFC, 0xFE, 0x01, 6}
#else
{0x00010000ul, 0x0010FFFFul, 0xF0, 0xF8, 0x07, 4}
#endif
};
static HAWK_INLINE __utf8_t* get_utf8_slot (hawk_uch_t uc)