xref: /freebsd/contrib/sendmail/libsm/string.c (revision 2fb4f839f3fc72ce2bab12f9ba4760f97f73e97f)

/*
 * Copyright (c) 2001 Proofpoint, Inc. and its suppliers.
 *      All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 *
 */

#include <sm/gen.h>
SM_RCSID("@(#)$Id: string.c,v 1.4 2013-11-22 20:51:43 ca Exp $")

#include <ctype.h>
#include <errno.h>

#include <sm/string.h>

/*
**  STRIPQUOTES -- Strip quotes & quote bits from a string.
**
**	Runs through a string and strips off unquoted quote
**	characters and quote bits.  This is done in place.
**
**	Parameters:
**		s -- the string to strip.
**
**	Returns:
**		none.
*/

void
stripquotes(s)
	char *s;
{
	register char *p;
	register char *q;
	register char c;

	if (s == NULL)
		return;

	p = q = s;
	do
	{
		c = *p++;
		if (c == '\\')
			c = *p++;
		else if (c == '"')
			continue;
		*q++ = c;
	} while (c != '\0');
}

/*
**  UNFOLDSTRIPQUOTES -- Strip quotes & quote bits from a string.
**
**	Parameters:
**		s -- the string to strip.
**
**	Returns:
**		none.
*/

void
unfoldstripquotes(s)
	char *s;
{
	char *p, *q, c;

	if (s == NULL)
		return;

	p = q = s;
	do
	{
		c = *p++;
		if (c == '\\' || c == '\n')
			c = *p++;
		else if (c == '"')
			continue;
		*q++ = c;
	} while (c != '\0');
}