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authorAnton L. Šijanec <sijanecantonluka@gmail.com>2020-05-16 19:35:55 +0200
committerAnton L. Šijanec <sijanecantonluka@gmail.com>2020-05-16 19:35:55 +0200
commit587f44fd93a0024500418ce25bf01d0f177644f4 (patch)
tree13a981e5bc369cca8cc99ad9547d54b4c76673f5 /lib/strlcat.c
parentfix to allow nested commands (diff)
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Diffstat (limited to 'lib/strlcat.c')
-rw-r--r--lib/strlcat.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/strlcat.c b/lib/strlcat.c
new file mode 100644
index 0000000..5d4e99e
--- /dev/null
+++ b/lib/strlcat.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2011 Apple, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <strings.h>
+
+size_t
+strlcat(char * restrict dst, const char * restrict src, size_t maxlen) {
+ const size_t srclen = strlen(src);
+ const size_t dstlen = strnlen(dst, maxlen);
+ if (dstlen == maxlen) return maxlen+srclen;
+ if (srclen < maxlen-dstlen) {
+ memcpy(dst+dstlen, src, srclen+1);
+ } else {
+ memcpy(dst+dstlen, src, maxlen-1);
+ dst[dstlen+maxlen-1] = '\0';
+ }
+ return dstlen + srclen;
+}
+