haiku/headers/build/private/app/MessageBody2.h

88 lines
2.3 KiB
C
Raw Normal View History

/*
* Copyright 2005, Haiku.
* Distributed under the terms of the MIT License.
*
* Authors:
* Michael Lotz <mmlr@mlotz.ch>
*/
/* BMessageBody handles data storage and retrieval for BMessage. */
#ifndef _MESSAGE_BODY_H_
#define _MESSAGE_BODY_H_
#include <List.h>
#include "MessageField2.h"
enum {
B_FLATTENABLE_TYPE = 'FLAT'
};
namespace BPrivate {
class BMessageBody {
public:
BMessageBody();
BMessageBody(const BMessageBody &other);
~BMessageBody();
BMessageBody &operator=(const BMessageBody &other);
status_t GetInfo(type_code typeRequested, int32 which,
char **name, type_code *typeFound,
int32 *countFound = NULL) const;
status_t GetInfo(const char *name, type_code *typeFound,
int32 *countFound = NULL) const;
status_t GetInfo(const char *name, type_code *typeFound,
bool *fixedSize) const;
int32 CountNames(type_code type) const;
bool IsEmpty() const;
ssize_t FlattenedSize() const;
status_t Flatten(BDataIO *stream) const;
status_t Unflatten(BDataIO *stream);
status_t AddData(const char *name, type_code type,
size_t length, void **buffer,
bool fixedSize = false, int32 count = 1);
status_t RemoveData(const char *name, int32 index = 0);
bool HasData(const char *name, type_code t, int32 n) const;
status_t FindData(const char *name, type_code type,
int32 index, const void **data,
ssize_t *numBytes) const;
status_t ReplaceData(const char *name, type_code type,
int32 index, size_t length, void **buffer);
status_t Rename(const char *oldName, const char *newName);
status_t RemoveName(const char *name);
status_t MakeEmpty();
void PrintToStream() const;
// hash table support
void HashInsert(BMessageField *field);
BMessageField *HashLookup(const char *name) const;
BMessageField *HashRemove(const char *name);
uint32 HashString(const char *string) const;
void HashClear();
private:
status_t InitCommon();
BMessageField *AddField(const char *name, type_code type,
status_t &error);
BMessageField *FindData(const char *name, type_code type,
status_t &error) const;
BList fFieldList;
BMessageField **fFieldTable;
int32 fFieldTableSize;
mutable ssize_t fFlattenedSize;
};
} // namespace BPrivate
#endif // _MESSAGE_BODY_H_