Ventoy/VtoyTool/BabyISO/biso_joliet.c

54 lines
1.6 KiB
C
Raw Normal View History

2020-04-04 12:07:50 -04:00
/******************************************************************************
* biso_joliet.c
*
* Copyright (c) 2020, longpanda <admin@ventoy.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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "biso.h"
#include "biso_joliet.h"
UCHAR BISO_JOLIET_GetLevel(IN CONST UCHAR *pucEscape)
{
UCHAR ucLevel = 0;
/*
* Standard Level Decimal Hex Bytes ASCII
* UCS-2 Level 1 2/5, 2/15, 4/0 (25)(2F)(40) '%\@'
* UCS-2 Level 2 2/5, 2/15, 4/3 (25)(2F)(43) '%\C'
* UCS-2 Level 3 2/5, 2/15, 4/5 (25)(2F)(45) '%\E
*/
if ((NULL != pucEscape) && (0x25 == pucEscape[0]) && (0x2F == pucEscape[1]))
{
if (0x40 == pucEscape[2])
{
ucLevel = 1;
}
else if (0x43 == pucEscape[2])
{
ucLevel = 2;
}
else if (0x45 == pucEscape[2])
{
ucLevel = 3;
}
}
return ucLevel;
}