elemental-ircd/libratbox/src/tools.c

204 lines
4.2 KiB
C

/*
* ircd-ratbox: A slightly useful ircd.
* tools.c: Various functions needed here and there.
*
* Copyright (C) 1996-2002 Hybrid Development Team
* Copyright (C) 2002-2005 ircd-ratbox development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*
* $Id: tools.c 25040 2008-01-23 16:11:34Z androsyn $
*
* Here is the original header:
*
* Useful stuff, ripped from places ..
* adrian chadd <adrian@creative.net.au>
*
* The TOOLS_C define builds versions of the functions in tools.h
* so that they end up in the resulting object files. If its not
* defined, tools.h will build inlined versions of the functions
* on supported compilers
*/
#define _GNU_SOURCE 1
#include <libratbox_config.h>
#include <ratbox_lib.h>
#include <rb_tools.h>
/*
* init_rb_dlink_nodes
*
*/
static rb_bh *dnode_heap;
void
rb_init_rb_dlink_nodes(size_t dh_size)
{
dnode_heap = rb_bh_create(sizeof(rb_dlink_node), dh_size, "librb_dnode_heap");
if(dnode_heap == NULL)
rb_outofmemory();
}
/*
* make_rb_dlink_node
*
* inputs - NONE
* output - pointer to new rb_dlink_node
* side effects - NONE
*/
rb_dlink_node *
rb_make_rb_dlink_node(void)
{
return(rb_bh_alloc(dnode_heap));
}
/*
* free_rb_dlink_node
*
* inputs - pointer to rb_dlink_node
* output - NONE
* side effects - free given rb_dlink_node
*/
void
rb_free_rb_dlink_node(rb_dlink_node * ptr)
{
assert(ptr != NULL);
rb_bh_free(dnode_heap, ptr);
}
/* rb_string_to_array()
* Changes a given buffer into an array of parameters.
* Taken from ircd-ratbox.
*
* inputs - string to parse, array to put in
* outputs - number of parameters
*/
int
rb_string_to_array(char *string, char **parv, int maxpara)
{
char *p, *xbuf = string;
int x = 0;
parv[x] = NULL;
if(string == NULL || string[0] == '\0')
return x;
while (*xbuf == ' ') /* skip leading spaces */
xbuf++;
if(*xbuf == '\0') /* ignore all-space args */
return x;
do
{
if(*xbuf == ':') /* Last parameter */
{
xbuf++;
parv[x++] = xbuf;
parv[x] = NULL;
return x;
}
else
{
parv[x++] = xbuf;
parv[x] = NULL;
if((p = strchr(xbuf, ' ')) != NULL)
{
*p++ = '\0';
xbuf = p;
}
else
return x;
}
while (*xbuf == ' ')
xbuf++;
if(*xbuf == '\0')
return x;
}
while (x < maxpara - 1);
if(*p == ':')
p++;
parv[x++] = p;
parv[x] = NULL;
return x;
}
#ifndef HAVE_STRLCAT
size_t
rb_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;
}
#else
size_t
rb_strlcat(char *dest, const char *src, size_t count)
{
return strlcat(dest, src, count);
}
#endif
#ifndef HAVE_STRLCPY
size_t
rb_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;
}
#else
size_t
rb_strlcpy(char *dest, const char *src, size_t size)
{
return strlcpy(dest, src, size);
}
#endif
#ifndef HAVE_STRNLEN
size_t
rb_strnlen(const char *s, size_t count)
{
const char *sc;
for (sc = s; count-- && *sc != '\0'; ++sc)
;;
return sc - s;
}
#else
size_t
rb_strnlen(const char *s, size_t count)
{
return strnlen(s, count);
}
#endif