/* vi: set sw=4 ts=4: *//* * Utility routines. * * Copyright (C) Manuel Nova III <mnovoa3@bellsouth.net> * and Vladimir Oleynik <vodz@usa.net>  * * 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 * *  */#include <stdio.h>#include <limits.h>#include "libbb.h"char process_escape_sequence(const char **ptr){	static const char charmap[] = {		'a',  'b',  'f',  'n',  'r',  't',  'v',  '\\', 0,		'\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '\\' };	const char *p;	const char *q;	int num_digits;	unsigned int n;		n = 0;	q = *ptr;	for ( num_digits = 0 ; num_digits < 3 ; ++num_digits) {		if ((*q < '0') || (*q > '7')) { /* not a digit? */			break;		}		n = n * 8 + (*q++ - '0');	}	if (num_digits == 0) {	/* mnemonic escape sequence? */		for (p=charmap ; *p ; p++) {			if (*p == *q) {				q++;				break;			}		}		n = *(p+(sizeof(charmap)/2));	}	   /* doesn't hurt to fall through to here from mnemonic case */	if (n > UCHAR_MAX) {	/* is octal code too big for a char? */		n /= 8;			/* adjust value and */		--q;				/* back up one char */	}	*ptr = q;	return (char) n;}/* END CODE *//*Local Variables:c-file-style: "linux"c-basic-offset: 4tab-width: 4End:*/