112 lines
3.1 KiB
C++
112 lines
3.1 KiB
C++
|
|
/** @file File I/O wrappers for C++. Use interfaces instead of function
|
|
* pointers to be sure even the silliest men on earth can work with this
|
|
*/
|
|
|
|
#ifndef AI_IOSTREAM_H_INC
|
|
#define AI_IOSTREAM_H_INC
|
|
|
|
#include <string>
|
|
#include <stddef.h>
|
|
|
|
#include "aiTypes.h"
|
|
#include "aiFileIO.h"
|
|
|
|
#ifndef __cplusplus
|
|
#error This header requires C++ to be used.
|
|
#endif
|
|
|
|
namespace Assimp
|
|
{
|
|
|
|
// ---------------------------------------------------------------------------
|
|
/** Class to handle file I/O for C++
|
|
*
|
|
* Derive an own implementation from this interface to provide custom IO handling
|
|
* to the Importer. If you implement this interface, be sure to also provide an
|
|
* implementation for IOSystem that creates instances of your custom IO class.
|
|
*/
|
|
// ---------------------------------------------------------------------------
|
|
class IOStream
|
|
{
|
|
protected:
|
|
/** Constructor protected, use IOSystem::Open() to create an instance. */
|
|
IOStream(void);
|
|
|
|
public:
|
|
// -------------------------------------------------------------------
|
|
/** Destructor. Deleting the object closes the underlying file,
|
|
* alternatively you may use IOSystem::Close() to release the file.
|
|
*/
|
|
virtual ~IOStream(void);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Read from the file
|
|
*
|
|
* See fread() for more details
|
|
* This fails for write-only files
|
|
*/
|
|
// -------------------------------------------------------------------
|
|
virtual size_t Read(
|
|
void* pvBuffer,
|
|
size_t pSize,
|
|
size_t pCount) = 0;
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Write to the file
|
|
*
|
|
* See fwrite() for more details
|
|
* This fails for read-only files
|
|
*/
|
|
// -------------------------------------------------------------------
|
|
virtual size_t Write(
|
|
const void* pvBuffer,
|
|
size_t pSize,
|
|
size_t pCount) = 0;
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Set the read/write cursor of the file
|
|
*
|
|
* See fseek() for more details
|
|
*/
|
|
// -------------------------------------------------------------------
|
|
virtual aiReturn Seek(
|
|
size_t pOffset,
|
|
aiOrigin pOrigin) = 0;
|
|
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Get the current position of the read/write cursor
|
|
*
|
|
* See ftell() for more details
|
|
*/
|
|
// -------------------------------------------------------------------
|
|
virtual size_t Tell(void) const = 0;
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Returns filesize
|
|
*
|
|
* Returns the filesize
|
|
*/
|
|
// -------------------------------------------------------------------
|
|
virtual size_t FileSize() const = 0;
|
|
};
|
|
// ----------------------------------------------------------------------------
|
|
inline IOStream::IOStream()
|
|
{
|
|
// empty
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
inline IOStream::~IOStream()
|
|
{
|
|
// empty
|
|
}
|
|
// ----------------------------------------------------------------------------
|
|
|
|
} //!ns Assimp
|
|
|
|
#endif //!!AI_IOSTREAM_H_INC
|