[irc/rqf/shadowircd.git] / src / irc_string.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  irc_string.c: IRC string functions.
 *
 *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id: irc_string.c 678 2006-02-03 20:25:01Z jilles $
 */

#include "stdinc.h"
#include "irc_string.h"
#include "client.h"
#include "setup.h"

#ifndef INT16SZ
#define INT16SZ 2
#endif

/*
 * clean_string - clean up a string possibly containing garbage
 *
 * *sigh* Before the kiddies find this new and exciting way of 
 * annoying opers, lets clean up what is sent to local opers
 * -Dianora
 */
char *
clean_string(char *dest, const unsigned char *src, size_t len)
{
	char *d = dest;
	s_assert(0 != dest);
	s_assert(0 != src);

	if(dest == NULL || src == NULL)
		return NULL;

	len -= 3;		/* allow for worst case, '^A\0' */

	while(*src && (len > 0))
	{
		if(*src & 0x80)	/* if high bit is set */
		{
			*d++ = '.';
			--len;
		}
		else if(!IsPrint(*src))	/* if NOT printable */
		{
			*d++ = '^';
			--len;
			*d++ = 0x40 + *src;	/* turn it into a printable */
		}
		else
			*d++ = *src;
		++src;
		--len;
	}
	*d = '\0';
	return dest;
}

/*
 * strip_tabs(dst, src, length)
 *
 *   Copies src to dst, while converting all \t (tabs) into spaces.
 *
 * NOTE: jdc: I have a gut feeling there's a faster way to do this.
 */
char *
strip_tabs(char *dest, const unsigned char *src, size_t len)
{
	char *d = dest;
	/* Sanity check; we don't want anything nasty... */
	s_assert(0 != dest);
	s_assert(0 != src);

	if(dest == NULL || src == NULL)
		return NULL;

	while(*src && (len > 0))
	{
		if(*src == '\t')
		{
			*d++ = ' ';	/* Translate the tab into a space */
		}
		else
		{
			*d++ = *src;	/* Copy src to dst */
		}
		++src;
		--len;
	}
	*d = '\0';		/* Null terminate, thanks and goodbye */
	return dest;
}

char *
strip_colour(char *string)
{
	char *c = string;
	char *c2 = string;
	char *last_non_space = NULL;
	/* c is source, c2 is target */
	for(; c && *c; c++)
		switch (*c)
		{
		case 3:
			if(isdigit(c[1]))
			{
				c++;
				if(isdigit(c[1]))
					c++;
				if(c[1] == ',' && isdigit(c[2]))
				{
					c += 2;
					if(isdigit(c[1]))
						c++;
				}
			}
			break;
		case 2:
		case 6:
		case 7:
		case 22:
		case 23:
		case 27:
		case 31:
			break;
		case 32:
			*c2++ = *c;
			break;
		default:
			*c2++ = *c;
			last_non_space = c2;
			break;
		}
	*c2 = '\0';
	if(last_non_space)
		*last_non_space = '\0';
	return string;
}
Commit	Line	Data
212380e3	1	/*
	2	* ircd-ratbox: A slightly useful ircd.
	3	* irc_string.c: IRC string functions.
	4	*
	5	* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
	6	* Copyright (C) 1996-2002 Hybrid Development Team
	7	* Copyright (C) 2002-2005 ircd-ratbox development team
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	22	* USA
	23	*
	24	* $Id: irc_string.c 678 2006-02-03 20:25:01Z jilles $
	25	*/
	26
	27	#include "stdinc.h"
212380e3	28	#include "irc_string.h"
212380e3	29	#include "client.h"
212380e3	30	#include "setup.h"
212380e3	31
212380e3	32	#ifndef INT16SZ
	33	#define INT16SZ 2
	34	#endif
212380e3	35
	36	/*
	37	* clean_string - clean up a string possibly containing garbage
	38	*
	39	* sigh Before the kiddies find this new and exciting way of
	40	* annoying opers, lets clean up what is sent to local opers
	41	* -Dianora
	42	*/
	43	char *
	44	clean_string(char dest, const unsigned char src, size_t len)
	45	{
	46	char *d = dest;
	47	s_assert(0 != dest);
	48	s_assert(0 != src);
	49
	50	if(dest == NULL \|\| src == NULL)
	51	return NULL;
	52
	53	len -= 3; /* allow for worst case, '^A\0' */
	54
	55	while(*src && (len > 0))
	56	{
	57	if(src & 0x80) / if high bit is set */
	58	{
	59	*d++ = '.';
	60	--len;
	61	}
	62	else if(!IsPrint(src)) / if NOT printable */
	63	{
	64	*d++ = '^';
	65	--len;
	66	d++ = 0x40 + src; /* turn it into a printable */
	67	}
	68	else
	69	d++ = src;
	70	++src;
	71	--len;
	72	}
	73	*d = '\0';
	74	return dest;
	75	}
	76
	77	/*
	78	* strip_tabs(dst, src, length)
	79	*
	80	* Copies src to dst, while converting all \t (tabs) into spaces.
	81	*
	82	* NOTE: jdc: I have a gut feeling there's a faster way to do this.
	83	*/
	84	char *
	85	strip_tabs(char dest, const unsigned char src, size_t len)
	86	{
	87	char *d = dest;
	88	/* Sanity check; we don't want anything nasty... */
	89	s_assert(0 != dest);
	90	s_assert(0 != src);
	91
	92	if(dest == NULL \|\| src == NULL)
	93	return NULL;
	94
	95	while(*src && (len > 0))
	96	{
	97	if(*src == '\t')
	98	{
99	d++ = ' '; / Translate the tab into a space */
100	}
101	else
102	{
103	d++ = src; /* Copy src to dst */
104	}
105	++src;
106	--len;
107	}
108	d = '\0'; / Null terminate, thanks and goodbye */
109	return dest;
110	}
111
212380e3	112	char *
	113	strip_colour(char *string)
	114	{
	115	char *c = string;
	116	char *c2 = string;
	117	char *last_non_space = NULL;
	118	/* c is source, c2 is target */
	119	for(; c && *c; c++)
	120	switch (*c)
	121	{
	122	case 3:
	123	if(isdigit(c[1]))
	124	{
	125	c++;
	126	if(isdigit(c[1]))
	127	c++;
	128	if(c[1] == ',' && isdigit(c[2]))
	129	{
	130	c += 2;
	131	if(isdigit(c[1]))
	132	c++;
	133	}
	134	}
	135	break;
	136	case 2:
	137	case 6:
	138	case 7:
	139	case 22:
	140	case 23:
	141	case 27:
	142	case 31:
	143	break;
	144	case 32:
	145	c2++ = c;
	146	break;
	147	default:
	148	c2++ = c;
	149	last_non_space = c2;
	150	break;
	151	}
	152	*c2 = '\0';
	153	if(last_non_space)
	154	*last_non_space = '\0';
	155	return string;
	156	}