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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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/>.
*
*/
#ifndef GLK_COMPREHEND_FILE_BUF_H
#define GLK_COMPREHEND_FILE_BUF_H
#include "common/array.h"
#include "common/memstream.h"
#include "common/stream.h"
namespace Glk {
namespace Comprehend {
struct FileBuffer : public Common::SeekableReadStream {
private:
Common::Array<byte> _data;
Common::Array<bool> _readBytes;
int32 _pos;
public:
FileBuffer() : _pos(0) {}
FileBuffer(const Common::String &filename);
FileBuffer(Common::ReadStream *stream, size_t size);
static bool exists(const Common::String &filename);
void close();
int64 pos() const override {
return _pos;
}
int64 size() const override {
return _data.size();
}
bool seek(int64 offset, int whence = SEEK_SET) override;
bool eos() const override {
return _pos >= (int)_data.size();
}
uint32 read(void *dataPtr, uint32 dataSize) override;
const byte *dataPtr() const {
return &_data[_pos];
}
size_t strlen(bool *eof = nullptr);
/*
* Debugging function to show regions of a file that have not been read.
*/
void showUnmarked();
};
#define file_buf_get_array(fb, type, base, array, member, size) \
do { \
uint __i; \
for (__i = (base); __i < (base) + (size); __i++) \
(array)[__i].member = fb->read##type(); \
} while (0)
#define file_buf_get_array_u8(fb, base, array, member, size) \
file_buf_get_array(fb, Byte, base, array, member, size)
#define file_buf_get_array_le16(fb, base, array, member, size) \
file_buf_get_array(fb, Uint16LE, base, array, member, size)
} // namespace Comprehend
} // namespace Glk
#endif
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