USG_PG3/usr/source/lexgen1/ctrans.c

ctrans(ss)
	char **ss;
{
	int c, k;
	if ((c = **ss) != '\\')
		return(c);
	switch(c= *++*ss)
	{
	case 'n': c = '\n'; break;
	case 't': c = '\t'; break;
	case 'r': c = '\r'; break;
	case 'b': c = '\b'; break;
	case '\\': c = '\\'; break;
	case '0': case '1': case '2': case '3':
	case '4': case '5': case '6': case '7':
		c =- '0';
		while ((k = *(*ss+1)) >= '0' && k <= '7')
			{
			c = c*8 + k - '0';
			(*ss)++;
			}
		break;
	}
	return(c);
}