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libbb: code shrink in last_char_is()

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2020-06-30 08:33:02 +02:00
parent c9fc15359e
commit d21a63f9fc
1 changed files with 9 additions and 8 deletions
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17
libbb/last_char_is.c
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@ -8,16 +8,17 @@
*/
#include "libbb.h"
/* Find out if the last character of a string matches the one given.
* Don't underrun the buffer if the string length is 0.
*/
/* Find out if the last character of a string matches the one given */
char* FAST_FUNC last_char_is(const char *s, int c)
{
if (s && *s) {
size_t sz = strlen(s) - 1;
s += sz;
if ( (unsigned char)*s == c)
return (char*)s;
if (s) {
size_t sz = strlen(s);
/* Don't underrun the buffer if the string length is 0 */
if (sz != 0) {
s += sz - 1;
if ((unsigned char)*s == c)
return (char*)s;
}
}
return NULL;
}