tree 14c9d2611ee87193616d1460fd86975d59e1f979
parent 2e945c8ee7d5cb358d98c4333a66b0d6631cefa6
author Willy Tarreau <w@1wt.eu> 1574434733 +0100
committer Willy Tarreau <w@1wt.eu> 1574674415 +0100
encoding latin1

MINOR: ist: add ist_find_ctl()

This new function looks for the first control character in a string (a
char whose value is between 0x00 and 0x1F included) and returns it, or
NULL if there is none. It is optimized for quickly evicting non-matching
strings and scans ~0.43 bytes per cycle. It can be used as an accelerator
when it's needed to look up several of these characters (e.g. CR/LF/NUL).