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Micro-optimize hb_language_from_string() 

As measured / improved by Benson Limketkai.
This commit is contained in:
Behdad Esfahbod 2015-09-29 14:34:56 +01:00
parent f2ad935e19
commit f3159ba514
1 changed files with 5 additions and 5 deletions
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10
src/hb-common.cc
View File

@ -293,21 +293,21 @@ retry:
hb_language_t hb_language_t
hb_language_from_string (const char *str, int len) hb_language_from_string (const char *str, int len)
{ {
char strbuf[64];
if (!str || !len || !*str) if (!str || !len || !*str)
return HB_LANGUAGE_INVALID; return HB_LANGUAGE_INVALID;
hb_language_item_t *item = NULL;
if (len >= 0) if (len >= 0)
{ {
/* NUL-terminate it. */ /* NUL-terminate it. */
char strbuf[64];
len = MIN (len, (int) sizeof (strbuf) - 1); len = MIN (len, (int) sizeof (strbuf) - 1);
memcpy (strbuf, str, len); memcpy (strbuf, str, len);
strbuf[len] = '\0'; strbuf[len] = '\0';
str = strbuf; item = lang_find_or_insert (strbuf);
} }
else
hb_language_item_t *item = lang_find_or_insert (str); item = lang_find_or_insert (str);
return likely (item) ? item->lang : HB_LANGUAGE_INVALID; return likely (item) ? item->lang : HB_LANGUAGE_INVALID;
} }