Use libc implementations of wcslcpy and wcslcat if they exist. Move internal implementations to fallback.c.

darcs-hash:20060419095628-ac50b-0e94e4205306bb99bb9dea72eec43b442520bf1b.gz

1 files changed, 106 insertions, 0 deletions

diff --git a/fallback.c b/fallback.c
index d6b708ad..dedd479d 100644
--- a/fallback.c
+++ b/fallback.c
@@ -888,5 +888,111 @@ long wcstol(const wchar_t *nptr,
 	}
 }
 #endif
+#ifndef HAVE_WCSLCAT
 
+/*$OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+size_t
+wcslcat(wchar_t *dst, const wchar_t *src, size_t siz)
+{
+	
+	register wchar_t *d = dst;
+	register const wchar_t *s = src;
+	register size_t n = siz;	
+	size_t dlen;
+
+	/* Find the end of dst and adjust bytes left but don't go past end */
+	while (n-- != 0 && *d != '\0')
+		d++;
+	
+	dlen = d - dst;
+	n = siz - dlen;	
+
+	if (n == 0)
+		return(dlen + wcslen(s));
+
+	while (*s != '\0') 
+	{
+		if (n != 1) 
+		{
+			*d++ = *s;
+			n--;
+		}
+		s++;
+	}
+	*d = '\0';
+
+	return(dlen + (s - src));
+	/* count does not include NUL */
+}
+
+#endif
+#ifndef HAVE_WCSLCPY
+
+/*$OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+size_t
+wcslcpy(wchar_t *dst, const wchar_t *src, size_t siz)
+{
+	register wchar_t *d = dst;
+	register const wchar_t *s = src;
+	register 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