87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef GLK_COMPREHEND_FILE_BUF_H
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#define GLK_COMPREHEND_FILE_BUF_H
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#include "common/array.h"
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#include "common/memstream.h"
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#include "common/stream.h"
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namespace Glk {
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namespace Comprehend {
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struct FileBuffer : public Common::SeekableReadStream {
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private:
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Common::Array<byte> _data;
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Common::Array<bool> _readBytes;
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int32 _pos;
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public:
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FileBuffer() : _pos(0) {}
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FileBuffer(const Common::String &filename);
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FileBuffer(Common::ReadStream *stream, size_t size);
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static bool exists(const Common::String &filename);
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void close();
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int64 pos() const override {
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return _pos;
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}
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int64 size() const override {
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return _data.size();
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}
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bool seek(int64 offset, int whence = SEEK_SET) override;
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bool eos() const override {
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return _pos >= (int)_data.size();
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}
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uint32 read(void *dataPtr, uint32 dataSize) override;
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const byte *dataPtr() const {
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return &_data[_pos];
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}
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size_t strlen(bool *eof = nullptr);
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/*
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* Debugging function to show regions of a file that have not been read.
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*/
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void showUnmarked();
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};
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#define file_buf_get_array(fb, type, base, array, member, size) \
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do { \
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uint __i; \
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for (__i = (base); __i < (base) + (size); __i++) \
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(array)[__i].member = fb->read##type(); \
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} while (0)
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#define file_buf_get_array_u8(fb, base, array, member, size) \
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file_buf_get_array(fb, Byte, base, array, member, size)
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#define file_buf_get_array_le16(fb, base, array, member, size) \
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file_buf_get_array(fb, Uint16LE, base, array, member, size)
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} // namespace Comprehend
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} // namespace Glk
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#endif
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