emo/busybox
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

libbb: make trim() return pointer to terminating NUL

Browse Source 
function                                             old     new   delta
trim                                                  80      90     +10
angle_address                                         56      50      -6
sysctl_main                                          282     273      -9
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: +10/-15)           Total:  -5 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2017-08-05 17:50:35 +02:00
parent 9cf89cdf84
commit 20077c1429
5 changed files with 22 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
libbb/trim.c
View File

@ -10,9 +10,10 @@
#include "libbb.h"
void FAST_FUNC trim(char *s)
char* FAST_FUNC trim(char *s)
{
size_t len = strlen(s);
size_t old = len;
/* trim trailing whitespace */
while (len && isspace(s[len-1]))
@ -26,5 +27,12 @@ void FAST_FUNC trim(char *s)
memmove(s, nws, len);
}
}
s[len] = '\0';
s += len;
/* If it was a "const char*" which does not need trimming,
* avoid superfluous store */
if (old != len)
*s = '\0';
return s;
}