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/* $Id: xstd.c,v 1.9 2009/03/08 19:47:41 kristaps Exp $ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
* 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.
*/
#include <assert.h>
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include "private.h"
/*
* Contains wrappers for common functions to simplify their general
* usage throughout this codebase.
*/
#ifdef __linux__
extern size_t strlcat(char *, const char *, size_t);
extern size_t strlcpy(char *, const char *, size_t);
#endif
int
xstrcmp(const char *p1, const char *p2)
{
return(0 == strcmp(p1, p2));
}
int
xstrlcat(char *dst, const char *src, size_t sz)
{
return(strlcat(dst, src, sz) < sz);
}
int
xstrlcpy(char *dst, const char *src, size_t sz)
{
return(strlcpy(dst, src, sz) < sz);
}
void *
xrealloc(void *ptr, size_t sz)
{
void *p;
if (NULL == (p = realloc(ptr, sz)))
err(EXIT_FAILURE, "realloc");
return(p);
}
void *
xcalloc(size_t num, size_t sz)
{
void *p;
if (NULL == (p = calloc(num, sz)))
err(EXIT_FAILURE, "calloc");
return(p);
}
char *
xstrdup(const char *p)
{
char *pp;
if (NULL == (pp = strdup(p)))
err(EXIT_FAILURE, "strdup");
return(pp);
}
int
xstrlcpys(char *buf, const struct mdoc_node *n, size_t sz)
{
char *p;
assert(sz > 0);
assert(buf);
*buf = 0;
for ( ; n; n = n->next) {
assert(MDOC_TEXT == n->type);
p = n->string;
if ( ! xstrlcat(buf, p, sz))
return(0);
if (n->next && ! xstrlcat(buf, " ", sz))
return(0);
}
return(1);
}
#ifdef __linux__
/* $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie 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.
*/
#include <sys/types.h>
#include <string.h>
size_t
strlcat(char *dst, const char *src, size_t siz)
{
char *d = dst;
const char *s = src;
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 + 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) {
while (--n != 0) {
if ((*d++ = *s++) == '\0')
break;
}
}
/* 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
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