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+/*
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+ * Copyright 2010-2016 Branimir Karadzic. All rights reserved.
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+ * License: https://github.com/bkaradzic/bx#license-bsd-2-clause
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+ */
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+
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+#ifndef BX_CRTIMPL_H_HEADER_GUARD
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+#define BX_CRTIMPL_H_HEADER_GUARD
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+
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+#if BX_CONFIG_ALLOCATOR_CRT
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+# include <malloc.h>
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+# include "allocator.h"
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+#endif // BX_CONFIG_ALLOCATOR_CRT
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+
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+#if BX_CONFIG_CRT_FILE_READER_WRITER
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+# include "readerwriter.h"
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+#endif // BX_CONFIG_CRT_FILE_READER_WRITER
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+
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+namespace bx
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+{
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+#if BX_CONFIG_ALLOCATOR_CRT
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+ class CrtAllocator : public AllocatorI
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+ {
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+ public:
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+ CrtAllocator()
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+ {
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+ }
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+
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+ virtual ~CrtAllocator()
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+ {
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+ }
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+
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+ virtual void* realloc(void* _ptr, size_t _size, size_t _align, const char* _file, uint32_t _line) BX_OVERRIDE
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+ {
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+ if (0 == _size)
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+ {
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+ if (NULL != _ptr)
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+ {
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+ if (BX_CONFIG_ALLOCATOR_NATURAL_ALIGNMENT >= _align)
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+ {
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+ ::free(_ptr);
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+ return NULL;
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+ }
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+
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+# if BX_COMPILER_MSVC
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+ BX_UNUSED(_file, _line);
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+ _aligned_free(_ptr);
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+# else
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+ bx::alignedFree(this, _ptr, _align, _file, _line);
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+# endif // BX_
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+ }
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+
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+ return NULL;
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+ }
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+ else if (NULL == _ptr)
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+ {
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+ if (BX_CONFIG_ALLOCATOR_NATURAL_ALIGNMENT >= _align)
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+ {
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+ return ::malloc(_size);
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+ }
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+
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+# if BX_COMPILER_MSVC
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+ BX_UNUSED(_file, _line);
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+ return _aligned_malloc(_size, _align);
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+# else
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+ return bx::alignedAlloc(this, _size, _align, _file, _line);
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+# endif // BX_
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+ }
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+
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+ if (BX_CONFIG_ALLOCATOR_NATURAL_ALIGNMENT >= _align)
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+ {
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+ return ::realloc(_ptr, _size);
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+ }
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+
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+# if BX_COMPILER_MSVC
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+ BX_UNUSED(_file, _line);
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+ return _aligned_realloc(_ptr, _size, _align);
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+# else
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+ return bx::alignedRealloc(this, _ptr, _size, _align, _file, _line);
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+# endif // BX_
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+ }
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+ };
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+#endif // BX_CONFIG_ALLOCATOR_CRT
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+
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+#if BX_CONFIG_CRT_FILE_READER_WRITER
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+ class CrtFileReader : public FileReaderI
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+ {
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+ public:
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+ CrtFileReader()
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+ : m_file(NULL)
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+ {
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+ }
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+
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+ virtual ~CrtFileReader()
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+ {
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+ }
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+
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+ virtual bool open(const char* _filePath, Error* _err) BX_OVERRIDE
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+ {
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+ BX_CHECK(NULL != _err, "Reader/Writer interface calling functions must handle errors.");
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+
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+ m_file = fopen(_filePath, "rb");
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+ if (NULL == m_file)
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+ {
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+ BX_ERROR_SET(_err, BX_ERROR_READERWRITER_OPEN, "CrtFileReader: Failed to open file.");
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+ return false;
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+ }
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+
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+ return true;
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+ }
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+
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+ virtual void close() BX_OVERRIDE
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+ {
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+ fclose(m_file);
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+ }
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+
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+ virtual int64_t seek(int64_t _offset = 0, Whence::Enum _whence = Whence::Current) BX_OVERRIDE
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+ {
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+ fseeko64(m_file, _offset, _whence);
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+ return ftello64(m_file);
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+ }
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+
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+ virtual int32_t read(void* _data, int32_t _size, Error* _err) BX_OVERRIDE
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+ {
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+ BX_CHECK(NULL != _err, "Reader/Writer interface calling functions must handle errors.");
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+
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+ int32_t size = (int32_t)fread(_data, 1, _size, m_file);
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+ if (size != _size)
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+ {
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+ BX_ERROR_SET(_err, BX_ERROR_READERWRITER_READ, "CrtFileReader: read failed.");
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+ return size >= 0 ? size : 0;
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+ }
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+
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+ return size;
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+ }
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+
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+ private:
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+ FILE* m_file;
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+ };
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+
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+ class CrtFileWriter : public FileWriterI
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+ {
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+ public:
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+ CrtFileWriter()
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+ : m_file(NULL)
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+ {
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+ }
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+
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+ virtual ~CrtFileWriter()
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+ {
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+ }
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+
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+ virtual bool open(const char* _filePath, bool _append, Error* _err) BX_OVERRIDE
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+ {
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+ m_file = fopen(_filePath, _append ? "ab" : "wb");
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+
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+ if (NULL == m_file)
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+ {
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+ BX_ERROR_SET(_err, BX_ERROR_READERWRITER_OPEN, "CrtFileWriter: Failed to open file.");
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+ return false;
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+ }
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+
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+ return true;
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+ }
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+
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+ virtual void close() BX_OVERRIDE
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+ {
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+ fclose(m_file);
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+ }
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+
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+ virtual int64_t seek(int64_t _offset = 0, Whence::Enum _whence = Whence::Current) BX_OVERRIDE
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+ {
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+ fseeko64(m_file, _offset, _whence);
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+ return ftello64(m_file);
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+ }
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+
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+ virtual int32_t write(const void* _data, int32_t _size, Error* _err) BX_OVERRIDE
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+ {
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+ BX_CHECK(NULL != _err, "Reader/Writer interface calling functions must handle errors.");
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+
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+ int32_t size = (int32_t)fwrite(_data, 1, _size, m_file);
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+ if (size != _size)
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+ {
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+ BX_ERROR_SET(_err, BX_ERROR_READERWRITER_WRITE, "CrtFileWriter: write failed.");
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+ return size >= 0 ? size : 0;
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+ }
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+
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+ return size;
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+ }
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+
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+ private:
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+ FILE* m_file;
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+ };
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+#endif // BX_CONFIG_CRT_FILE_READER_WRITER
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+
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+} // namespace bx
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+
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+#endif // BX_CRTIMPL_H_HEADER_GUARD
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