/* | |
* Copyright (C) 1998-2004 David Turner and Werner Lemberg | |
* Copyright (C) 2006 Behdad Esfahbod | |
* | |
* This is part of HarfBuzz, an OpenType Layout engine library. | |
* | |
* Permission is hereby granted, without written agreement and without | |
* license or royalty fees, to use, copy, modify, and distribute this | |
* software and its documentation for any purpose, provided that the | |
* above copyright notice and the following two paragraphs appear in | |
* all copies of this software. | |
* | |
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR | |
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES | |
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN | |
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH | |
* DAMAGE. | |
* | |
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, | |
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS | |
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO | |
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. | |
*/ | |
#ifndef HARFBUZZ_STREAM_PRIVATE_H | |
#define HARFBUZZ_STREAM_PRIVATE_H | |
#include "harfbuzz-impl.h" | |
#include "harfbuzz-stream.h" | |
HB_BEGIN_HEADER | |
HB_INTERNAL void | |
_hb_close_stream( HB_Stream stream ); | |
HB_INTERNAL HB_Int | |
_hb_stream_pos( HB_Stream stream ); | |
HB_INTERNAL HB_Error | |
_hb_stream_seek( HB_Stream stream, | |
HB_UInt pos ); | |
HB_INTERNAL HB_Error | |
_hb_stream_frame_enter( HB_Stream stream, | |
HB_UInt size ); | |
HB_INTERNAL void | |
_hb_stream_frame_exit( HB_Stream stream ); | |
/* convenience macros */ | |
#define SET_ERR(c) ( (error = (c)) != 0 ) | |
#define GOTO_Table(tag) (0) | |
#define FILE_Pos() _hb_stream_pos( stream ) | |
#define FILE_Seek(pos) SET_ERR( _hb_stream_seek( stream, pos ) ) | |
#define ACCESS_Frame(size) SET_ERR( _hb_stream_frame_enter( stream, size ) ) | |
#define FORGET_Frame() _hb_stream_frame_exit( stream ) | |
#define GET_Byte() (*stream->cursor++) | |
#define GET_Short() (stream->cursor += 2, (HB_Short)( \ | |
(*(((HB_Byte*)stream->cursor)-2) << 8) | \ | |
*(((HB_Byte*)stream->cursor)-1) \ | |
)) | |
#define GET_Long() (stream->cursor += 4, (HB_Int)( \ | |
(*(((HB_Byte*)stream->cursor)-4) << 24) | \ | |
(*(((HB_Byte*)stream->cursor)-3) << 16) | \ | |
(*(((HB_Byte*)stream->cursor)-2) << 8) | \ | |
*(((HB_Byte*)stream->cursor)-1) \ | |
)) | |
#define GET_Char() ((HB_Char)GET_Byte()) | |
#define GET_UShort() ((HB_UShort)GET_Short()) | |
#define GET_ULong() ((HB_UInt)GET_Long()) | |
#define GET_Tag4() GET_ULong() | |
HB_END_HEADER | |
#endif /* HARFBUZZ_STREAM_PRIVATE_H */ |