23004557fd
Now export writes krbundles directly --HG-- extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%40194
84 lines
3.4 KiB
C++
84 lines
3.4 KiB
C++
//
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// KRDataBlock.h
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// KREngine
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//
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// Copyright 2012 Kearwood Gilbert. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of Kearwood Gilbert.
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//
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#ifndef KREngine_KRDataBlock_h
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#define KREngine_KRDataBlock_h
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class KRDataBlock {
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public:
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KRDataBlock();
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~KRDataBlock();
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// Encapsulate a pointer. Note - The pointer will not be free'ed
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bool load(void *data, size_t size);
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// Load a file into memory using mmap. The data pointer will be protected as read-only until append() or expand() is called
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bool load(const std::string &path);
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// Save the data to a file, and switch to read-only mode. The data pointer will be replaced with a mmap'ed address of the file; the malloc'ed data will be freed
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bool save(const std::string& path);
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// Append data to the end of the block, increasing the size of the block and making it read-write.
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void append(void *data, size_t size);
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// Append data to the end of the block, increasing the size of the block and making it read-write.
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void append(KRDataBlock &data);
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// Append string to the end of the block, increasing the size of the block and making it read-write. The null terminating character is included
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void append(const std::string &s);
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// Expand or shrink the data block, and switch it to read-write mode. Note - this may result in a mmap'ed file being copied to malloc'ed ram and then closed
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void expand(size_t size);
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// Unload a file, releasing any mmap'ed file handles or malloc'ed ram that was in use
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void unload();
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// Return a pointer to the start of the data block
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void *getStart();
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// Return a pointer to the one byte after the end of the data block
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void *getEnd();
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// Return the size of the data block. Use append() or expand() to make the data block larger
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size_t getSize() const;
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private:
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void *m_data;
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size_t m_data_size;
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// For memory mapped objects:
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int m_fdPackFile;
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// For malloc'ed objects:
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bool m_bMalloced;
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};
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#endif
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