ariadne
/
smol
2
1
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

chars: optimize a function for the most common blanks: space and tab 

Also, do not bother to provide separate code for the non-UTF-8 case.
Instead, optimize for plain ASCII characters.
master
Benno Schulenberg 2020-03-12 15:42:52 +01:00
parent ae139021eb
commit b2c63c3d3c
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/chars.c
View File

@ -79,17 +79,15 @@ bool is_alnum_char(const char *c)
/* Return TRUE when the given character is space or tab or other whitespace. */ /* Return TRUE when the given character is space or tab or other whitespace. */
bool is_blank_char(const char *c) bool is_blank_char(const char *c)
{ {
#ifdef ENABLE_UTF8
if (use_utf8) {
wchar_t wc; wchar_t wc;
if ((signed char)*c >= 0)
return (*c == ' ' || *c == TAB_CODE);
if (mbtowc(&wc, c, MAXCHARLEN) < 0) if (mbtowc(&wc, c, MAXCHARLEN) < 0)
return FALSE; return FALSE;
return iswblank(wc); return iswblank(wc);
} else
#endif
return isblank((unsigned char)*c);
} }
/* Return TRUE when the given character is a control character. */ /* Return TRUE when the given character is a control character. */