libpuny.b/string.c

/****************************************************************************
 |  (C) Copyright 2008 Novell, Inc. All Rights Reserved.
 |
 |  GPLv2: This program is free software; you can redistribute it
 |  and/or modify it under the terms of version 2 of the GNU General
 |  Public License as published by the Free Software Foundation.
 |
 |  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.
 +-------------------------------------------------------------------------*/

#include <stdarg.h>
#include <stddef.h>
#include <string.h>

char *cat (char *dst, ...)
{
	char    *s = dst;
	char	*t;
	va_list	args;

	va_start(args, dst);

	*s = '\0';
	for (;;) {
		t = va_arg(args, char *);
		if (!t) break;
		while ((*s = *t++))
			++s;
	}
	va_end(args);
	return dst;
}

#if !defined(__HAVE_ARCH_STRLCPY)  && !(__APPLE__)
/**
 * strlcpy - Copy a %NUL terminated string into a sized buffer
 * @dest: Where to copy the string to
 * @src: Where to copy the string from
 * @size: size of destination buffer
 *
 * Compatible with *BSD: the result is always a valid
 * NUL-terminated string that fits in the buffer (unless,
 * of course, the buffer size is zero). It does not pad
 * out the result like strncpy() does.
 */
size_t strlcpy(char *dest, const char *src, size_t size)
{
	size_t ret = strlen(src);

	if (size) {
		size_t len = (ret >= size) ? size-1 : ret;
		memcpy(dest, src, len);
		dest[len] = '\0';
	}
	return ret;
}
#endif

#if !defined(__HAVE_ARCH_STRLCPY)  && !(__APPLE__)
/**
 * strlcat - Append a length-limited, %NUL-terminated string to another
 * @dest: The string to be appended to
 * @src: The string to append to it
 * @count: The size of the destination buffer.
 */
size_t strlcat(char *dest, const char *src, size_t count)
{
	size_t dsize = strlen(dest);
	size_t len = strlen(src);
	size_t res = dsize + len;

	dest += dsize;
	count -= dsize;
	if (len >= count)
		len = count-1;
	memcpy(dest, src, len);
	dest[len] = 0;
	return res;
}
#endif

#if 0
int main ()
{
	char	buf[400];

	printf("%s\n", cat(buf, "This", " is", " a", " string", 0));
	return 0;
}
#endif