[hackers] [wmii] New strlcat (no more half-page long license).

changeset: 2031:8fbe9a9e1806
tag: tip
user: Kris Maglione <jg_AT_suckless.org>
date: Sat Mar 24 18:35:05 2007 -0400
summary: New strlcat (no more half-page long license).

diff -r a9798d613f63 -r 8fbe9a9e1806 util.c
--- a/util.c Sat Mar 24 08:10:41 2007 -0400
+++ b/util.c Sat Mar 24 18:35:05 2007 -0400
@@ -122,66 +122,25 @@ str_nil(char *s) {
         return "<nil>";
 }
 
-/*
- * Copyright (c) 1998 Todd C. Miller <Todd.Miller_AT_courtesan.com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
+uint
+strlcat(char *dst, const char *src, uint size) {
+ const char *s;
+ char *d;
+ int n, len;
 
-/*
- * Appends src to string dst of size siz (unlike strncat, siz is the
- * full size of dst, not space left). At most siz-1 characters
- * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
- * Returns strlen(src) + MIN(siz, strlen(initial dst)).
- * If retval >= siz, truncation occurred.
- */
-uint
-strlcat(char *dst, const char *src, unsigned int siz) {
- const char *s;
- char *d;
- unsigned int n, dlen;
+ d = dst;
+ s = src;
+ n = size;
+ while(n-- > 0 && *d != '\0')
+ d++;
+ len = n;
 
- n = siz;
- s = src;
- d = dst;
-
- /* Find the end of dst and adjust bytes left but don't go past end */
- while (n-- != 0 && *d != '\0')
- d++;
- dlen = d - dst;
- n = siz - dlen;
-
- if (n == 0)
- return(dlen + strlen(s));
- while (*s != '\0') {
- if (n != 1) {
- *d++ = *s;
- n--;
- }
- s++;
- }
- *d = '\0';
-
- return(dlen + (s - src)); /* count does not include NUL */
+ while(*s != '\0') {
+ if(n-- > 0)
+ *d++ = *s;
+ s++;
+ }
+ if(len > 0)
+ *d = '\0';
+ return size - n - 1;
 }
Received on Sat Mar 24 2007 - 23:35:58 UTC