fe88ae51ec
This allows you to pass node_ref's around like you can entry_ref's. Added node_ref_flatten(), node_ref_unflatten() and node_ref_swap() to MessageUtils. These are close cousins to entry_ref_flatten(), entry_ref_unflatten(), and entry_ref_swap() but for node_ref's. Added B_NODE_REF_TYPE to TypeConstants.h in the Support Kit. Added B_NODE_REF_TYPE to Debugger and ByteOrder in Support Kit, B_NODE_REF_TYPE is treated the same as a B_REF_TYPE (entry_ref). Add documentation for new NodeRef methods and B_NODE_REF_TYPE. Change-Id: I32c6ed276bf1a7894a835b9fc9de5a882c35883c Reviewed-on: https://review.haiku-os.org/c/haiku/+/3182 Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>
195 lines
3.2 KiB
C++
195 lines
3.2 KiB
C++
#ifndef _MESSAGE_UTILS_H_
|
|
#define _MESSAGE_UTILS_H_
|
|
|
|
#include <ByteOrder.h>
|
|
#include <DataIO.h>
|
|
#include <Entry.h>
|
|
#include <Message.h>
|
|
#include <Node.h>
|
|
#include <SupportDefs.h>
|
|
|
|
|
|
namespace BPrivate { // Only putting these here because Be did
|
|
|
|
// entry_ref
|
|
status_t entry_ref_flatten(char* buffer, size_t* size, const entry_ref* ref);
|
|
status_t entry_ref_unflatten(entry_ref* ref, const char* buffer, size_t size);
|
|
status_t entry_ref_swap(char* buffer, size_t size);
|
|
|
|
// node_ref
|
|
status_t node_ref_flatten(char* buffer, size_t* size, const node_ref* ref);
|
|
status_t node_ref_unflatten(node_ref* ref, const char* buffer, size_t size);
|
|
status_t node_ref_swap(char* buffer, size_t size);
|
|
|
|
uint32 CalculateChecksum(const uint8 *buffer, int32 size);
|
|
|
|
} // namespace BPrivate
|
|
|
|
|
|
template<class T>
|
|
inline void
|
|
byte_swap(T &/*data*/)
|
|
{
|
|
// Specialize for data types which actually swap
|
|
}
|
|
|
|
|
|
inline void
|
|
write_helper(BDataIO *stream, const void *data, size_t size)
|
|
{
|
|
status_t error = stream->Write(data, size);
|
|
if (error < B_OK)
|
|
throw error;
|
|
}
|
|
|
|
|
|
class TReadHelper {
|
|
public:
|
|
TReadHelper(BDataIO *stream)
|
|
: fStream(stream),
|
|
fError(B_OK),
|
|
fSwap(false)
|
|
{
|
|
}
|
|
|
|
TReadHelper(BDataIO *stream, bool swap)
|
|
: fStream(stream),
|
|
fError(B_OK),
|
|
fSwap(swap)
|
|
{
|
|
}
|
|
|
|
template<class T>
|
|
inline void operator()(T &data)
|
|
{
|
|
fError = fStream->Read((void *)&data, sizeof(T));
|
|
if (fError > B_OK) {
|
|
if (IsSwapping())
|
|
byte_swap(data);
|
|
return;
|
|
}
|
|
|
|
if (fError == 0)
|
|
fError = B_ERROR;
|
|
throw fError;
|
|
}
|
|
|
|
template<class T>
|
|
inline void operator()(T data, size_t len)
|
|
{
|
|
fError = fStream->Read((void *)data, len);
|
|
if (fError >= B_OK)
|
|
return;
|
|
|
|
throw fError;
|
|
}
|
|
|
|
status_t Status() const { return fError >= B_OK ? B_OK : fError; }
|
|
|
|
void SetSwap(bool yesNo) { fSwap = yesNo; }
|
|
bool IsSwapping() const { return fSwap; }
|
|
|
|
private:
|
|
BDataIO *fStream;
|
|
status_t fError;
|
|
bool fSwap;
|
|
};
|
|
|
|
|
|
class TChecksumHelper {
|
|
public:
|
|
TChecksumHelper(uchar* buffer)
|
|
: fBuffer(buffer),
|
|
fBufPtr(buffer)
|
|
{
|
|
}
|
|
|
|
template<class T>
|
|
inline void Cache(const T &data)
|
|
{
|
|
*((T*)fBufPtr) = data;
|
|
fBufPtr += sizeof (T);
|
|
}
|
|
|
|
int32 CheckSum();
|
|
|
|
private:
|
|
uchar *fBuffer;
|
|
uchar *fBufPtr;
|
|
};
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(double &data)
|
|
{
|
|
data = __swap_double(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(float &data)
|
|
{
|
|
data = __swap_float(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(int64 &data)
|
|
{
|
|
data = __swap_int64(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(uint64 &data)
|
|
{
|
|
data = __swap_int64(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(int32 &data)
|
|
{
|
|
data = __swap_int32(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(uint32 &data)
|
|
{
|
|
data = __swap_int32(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(int16 &data)
|
|
{
|
|
data = __swap_int16(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(uint16 &data)
|
|
{
|
|
data = __swap_int16(data);
|
|
}
|
|
|
|
|
|
template<>
|
|
inline void
|
|
byte_swap(entry_ref &data)
|
|
{
|
|
byte_swap(data.device);
|
|
byte_swap(data.directory);
|
|
}
|
|
|
|
#endif // _MESSAGE_UTILS_H_
|