104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
/*
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* Copyright 2005, Haiku.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Michael Lotz <mmlr@mlotz.ch>
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*/
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/* BMessageBody handles data storage and retrieval for BMessage. */
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#ifndef _MESSAGE_BODY_H_
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#define _MESSAGE_BODY_H_
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#include <List.h>
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enum {
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B_FLATTENABLE_TYPE = 'FLAT'
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};
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namespace BPrivate {
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class BMessageField;
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class BMessageBody {
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public:
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BMessageBody();
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BMessageBody(const BMessageBody &other);
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~BMessageBody();
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BMessageBody &operator=(const BMessageBody &other);
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status_t GetInfo(type_code typeRequested, int32 which,
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char **name, type_code *typeFound,
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int32 *countFound = NULL) const;
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status_t GetInfo(const char *name, type_code *typeFound,
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int32 *countFound = NULL) const;
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status_t GetInfo(const char *name, type_code *typeFound,
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bool *fixedSize) const;
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int32 CountNames(type_code type) const;
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bool IsEmpty() const;
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ssize_t FlattenedSize() const;
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status_t Flatten(BDataIO *stream) const;
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status_t Unflatten(BDataIO *stream, int32 length);
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status_t AddData(const char *name, type_code type,
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const void *item, ssize_t length,
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bool fixedSize);
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status_t AddData(const char *name, type_code type,
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void **buffer, ssize_t length);
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status_t ReplaceData(const char *name, type_code type,
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int32 index, const void *item, ssize_t length);
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status_t ReplaceData(const char *name, type_code type,
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int32 index, void **buffer, ssize_t length);
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status_t RemoveData(const char *name, int32 index = 0);
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bool HasData(const char *name, type_code t,
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int32 index) const;
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status_t FindData(const char *name, type_code type,
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int32 index, const void **data,
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ssize_t *numBytes) const;
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status_t Rename(const char *oldName, const char *newName);
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status_t RemoveName(const char *name);
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status_t MakeEmpty();
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void PrintToStream() const;
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// flat buffer management
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inline uint8 *FlatBuffer() const { return fFlatBuffer; };
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uint8 *FlatInsert(int32 offset, ssize_t oldLength,
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ssize_t newLength);
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void FlatResize(int32 newSize);
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// hash table support
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void HashInsert(BMessageField *field);
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BMessageField *HashLookup(const char *name) const;
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BMessageField *HashRemove(const char *name);
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uint32 HashString(const char *string) const;
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void HashClear();
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private:
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status_t InitCommon();
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BMessageField *AddData(const char *name, type_code type,
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status_t &error);
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BMessageField *FindData(const char *name, type_code type,
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status_t &error) const;
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BList fFieldList;
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BMessageField **fFieldTable;
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int32 fFieldTableSize;
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uint8 *fFlatBuffer;
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int32 fFlatLength;
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int32 fFlatAllocated;
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int32 fBlockSize;
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};
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} // namespace BPrivate
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#endif // _MESSAGE_BODY_H_
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