From c1bdffe99b6fa6fdb0f43e0dec85d8bbfcab1572 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Thu, 26 Apr 2001 15:56:47 +0000 Subject: Another nice cleanup from Larry. This adds a new last_char_is() function and uses it to avoid possible buffer underruns whn strlen is zero, and avoid the possible space-hogging inline of strlen() in several cases. -Erik --- libbb/last_char_is.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 libbb/last_char_is.c (limited to 'libbb/last_char_is.c') diff --git a/libbb/last_char_is.c b/libbb/last_char_is.c new file mode 100644 index 000000000..b4bb7ec32 --- /dev/null +++ b/libbb/last_char_is.c @@ -0,0 +1,33 @@ +/* + * busybox library eXtended function + * + * Copyright (C) 2001 Larry Doolittle, + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#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. Also avoids a possible + * space-hogging inline of strlen() per usage. + */ +int last_char_is(const char *s, const int c) +{ + int l = strlen(s); + if (l==0) return 0; + return (s[l-1] == c); +} -- cgit v1.2.3