Added implementation of strlcpy and strlcat for systems that dont have it

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@905 e03df62e-2008-0410-955e-edbf42e46eb7

1 files changed, 89 insertions, 0 deletions

diff --git a/src/inspstring.cpp b/src/inspstring.cpp
new file mode 100644
index 000000000..7b9624fcf
--- /dev/null
+++ b/src/inspstring.cpp
@@ -0,0 +1,89 @@
+#include "inspircd_config.h"
+#include "inspstring.h"
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@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.
+ */
+ 
+#ifndef HAVE_STRLCPY
+size_t strlcat(char *dst, const char *src, size_t siz)
+{
+  char *d = dst;
+  const char *s = src;
+  size_t n = siz, dlen;
+
+  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 */
+}
+
+size_t strlcpy(char *dst, const char *src, size_t siz)
+{
+  char *d = dst;
+  const char *s = src;
+  size_t n = siz;
+
+  /* Copy as many bytes as will fit */
+  if (n != 0 && --n != 0)
+  {
+    do
+    {
+      if ((*d++ = *s++) == 0)
+        break;
+    } while (--n != 0);
+  }
+
+  /* Not enough room in dst, add NUL and traverse rest of src */
+  if (n == 0)
+  {
+    if (siz != 0)
+      *d = '\0'; /* NUL-terminate dst */
+    while (*s++)
+      ;
+  }
+
+  return(s - src - 1); /* count does not include NUL */
+}
+#endif