2 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 #ifndef BITCOIN_STRLCPY_H
17 #define BITCOIN_STRLCPY_H
23 * Copy src to string dst of size siz. At most siz-1 characters
24 * will be copied. Always NUL terminates (unless siz == 0).
25 * Returns strlen(src); if retval >= siz, truncation occurred.
27 inline size_t strlcpy(char *dst, const char *src, size_t siz)
33 /* Copy as many bytes as will fit */
38 if ((*d++ = *s++) == '\0')
43 /* Not enough room in dst, add NUL and traverse rest of src */
47 *d = '\0'; /* NUL-terminate dst */
52 return(s - src - 1); /* count does not include NUL */
56 * Appends src to string dst of size siz (unlike strncat, siz is the
57 * full size of dst, not space left). At most siz-1 characters
58 * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
59 * Returns strlen(src) + MIN(siz, strlen(initial dst)).
60 * If retval >= siz, truncation occurred.
62 inline size_t strlcat(char *dst, const char *src, size_t siz)
69 /* Find the end of dst and adjust bytes left but don't go past end */
70 while (n-- != 0 && *d != '\0')
76 return(dlen + strlen(s));
88 return(dlen + (s - src)); /* count does not include NUL */