574 lines
21 KiB
C++
574 lines
21 KiB
C++
/*
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* Copyright 2005-2012, Haiku Inc. All Rights Reserved.
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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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#ifndef _MESSAGE_H
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#define _MESSAGE_H
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#include <new>
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#include <BeBuild.h>
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#include <DataIO.h>
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#include <Flattenable.h>
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#include <OS.h>
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#include <Rect.h>
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#include <Size.h>
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#include <AppDefs.h> /* For convenience */
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#include <TypeConstants.h> /* For convenience */
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class BAlignment;
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class BBlockCache;
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class BMessenger;
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class BHandler;
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class BString;
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struct entry_ref;
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// Name lengths and Scripting specifiers
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#define B_FIELD_NAME_LENGTH 255
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#define B_PROPERTY_NAME_LENGTH 255
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enum {
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B_NO_SPECIFIER = 0,
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B_DIRECT_SPECIFIER = 1,
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B_INDEX_SPECIFIER,
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B_REVERSE_INDEX_SPECIFIER,
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B_RANGE_SPECIFIER,
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B_REVERSE_RANGE_SPECIFIER,
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B_NAME_SPECIFIER,
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B_ID_SPECIFIER,
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B_SPECIFIERS_END = 128
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// app-defined specifiers start at B_SPECIFIERS_END + 1
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};
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class BMessage {
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public:
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uint32 what;
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BMessage();
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BMessage(uint32 what);
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BMessage(const BMessage& other);
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virtual ~BMessage();
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BMessage& operator=(const BMessage& other);
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// Statistics and misc info
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status_t GetInfo(type_code typeRequested, int32 index,
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char** nameFound, 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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status_t GetInfo(const char* name, type_code* typeFound,
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int32* countFound, bool* fixedSize) const;
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int32 CountNames(type_code type) const;
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bool IsEmpty() const;
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bool IsSystem() const;
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bool IsReply() const;
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void PrintToStream() const;
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status_t Rename(const char* oldEntry,
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const char* newEntry);
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// Delivery info
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bool WasDelivered() const;
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bool IsSourceWaiting() const;
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bool IsSourceRemote() const;
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BMessenger ReturnAddress() const;
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const BMessage* Previous() const;
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bool WasDropped() const;
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BPoint DropPoint(BPoint* offset = NULL) const;
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// Replying
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status_t SendReply(uint32 command,
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BHandler* replyTo = NULL);
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status_t SendReply(BMessage* reply,
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BHandler* replyTo = NULL,
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bigtime_t timeout = B_INFINITE_TIMEOUT);
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status_t SendReply(BMessage* reply, BMessenger replyTo,
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bigtime_t timeout = B_INFINITE_TIMEOUT);
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status_t SendReply(uint32 command,
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BMessage* replyToReply);
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status_t SendReply(BMessage* reply,
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BMessage* replyToReply,
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bigtime_t sendTimeout = B_INFINITE_TIMEOUT,
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bigtime_t replyTimeout
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= B_INFINITE_TIMEOUT);
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// Flattening data
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ssize_t FlattenedSize() const;
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status_t Flatten(char* buffer, ssize_t size) const;
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status_t Flatten(BDataIO* stream,
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ssize_t* size = NULL) const;
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status_t Unflatten(const char* flatBuffer);
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status_t Unflatten(BDataIO* stream);
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// Specifiers (scripting)
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status_t AddSpecifier(const char* property);
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status_t AddSpecifier(const char* property, int32 index);
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status_t AddSpecifier(const char* property, int32 index,
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int32 range);
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status_t AddSpecifier(const char* property,
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const char* name);
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status_t AddSpecifier(const BMessage* specifier);
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status_t SetCurrentSpecifier(int32 index);
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status_t GetCurrentSpecifier(int32* index,
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BMessage* specifier = NULL,
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int32* what = NULL,
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const char** property = NULL) const;
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bool HasSpecifiers() const;
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status_t PopSpecifier();
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// Adding data
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status_t AddAlignment(const char* name,
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const BAlignment& alignment);
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status_t AddRect(const char* name, BRect rect);
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status_t AddPoint(const char* name, BPoint point);
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status_t AddSize(const char* name, BSize size);
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status_t AddString(const char* name, const char* string);
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status_t AddString(const char* name,
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const BString& string);
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status_t AddInt8(const char* name, int8 value);
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status_t AddUInt8(const char* name, uint8 value);
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status_t AddInt16(const char* name, int16 value);
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status_t AddUInt16(const char* name, uint16 value);
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status_t AddInt32(const char* name, int32 value);
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status_t AddUInt32(const char* name, uint32 value);
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status_t AddInt64(const char* name, int64 value);
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status_t AddUInt64(const char* name, uint64 value);
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status_t AddBool(const char* name, bool value);
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status_t AddFloat(const char* name, float value);
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status_t AddDouble(const char* name, double value);
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status_t AddPointer(const char* name,
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const void* pointer);
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status_t AddMessenger(const char* name,
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BMessenger messenger);
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status_t AddRef(const char* name, const entry_ref* ref);
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status_t AddMessage(const char* name,
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const BMessage* message);
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status_t AddFlat(const char* name, BFlattenable* object,
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int32 count = 1);
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status_t AddData(const char* name, type_code type,
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const void* data, ssize_t numBytes,
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bool isFixedSize = true, int32 count = 1);
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status_t Append(const BMessage& message);
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// Removing data
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status_t RemoveData(const char* name, int32 index = 0);
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status_t RemoveName(const char* name);
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status_t MakeEmpty();
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// Finding data
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status_t FindAlignment(const char* name,
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BAlignment* alignment) const;
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status_t FindAlignment(const char* name, int32 index,
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BAlignment* alignment) const;
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status_t FindRect(const char* name, BRect* rect) const;
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status_t FindRect(const char* name, int32 index,
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BRect* rect) const;
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status_t FindPoint(const char* name,
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BPoint* point) const;
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status_t FindPoint(const char* name, int32 index,
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BPoint* point) const;
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status_t FindSize(const char* name, BSize* size) const;
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status_t FindSize(const char* name, int32 index,
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BSize* size) const;
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status_t FindString(const char* name,
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const char** string) const;
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status_t FindString(const char* name, int32 index,
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const char** string) const;
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status_t FindString(const char* name,
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BString* string) const;
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status_t FindString(const char* name, int32 index,
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BString* string) const;
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status_t FindInt8(const char* name, int8* value) const;
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status_t FindInt8(const char* name, int32 index,
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int8* value) const;
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status_t FindUInt8(const char* name, uint8* value) const;
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status_t FindUInt8(const char* name, int32 index,
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uint8* value) const;
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status_t FindInt16(const char* name, int16* value) const;
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status_t FindInt16(const char* name, int32 index,
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int16* value) const;
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status_t FindUInt16(const char* name,
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uint16* value) const;
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status_t FindUInt16(const char* name, int32 index,
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uint16* value) const;
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status_t FindInt32(const char* name, int32* value) const;
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status_t FindInt32(const char* name, int32 index,
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int32* value) const;
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status_t FindUInt32(const char* name,
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uint32* value) const;
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status_t FindUInt32(const char* name, int32 index,
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uint32* value) const;
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status_t FindInt64(const char* name, int64* value) const;
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status_t FindInt64(const char* name, int32 index,
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int64* value) const;
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status_t FindUInt64(const char* name,
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uint64* value) const;
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status_t FindUInt64(const char* name, int32 index,
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uint64* value) const;
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status_t FindBool(const char* name, bool* value) const;
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status_t FindBool(const char* name, int32 index,
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bool* value) const;
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status_t FindFloat(const char* name, float* value) const;
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status_t FindFloat(const char* name, int32 index,
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float* value) const;
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status_t FindDouble(const char* name,
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double* value) const;
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status_t FindDouble(const char* name, int32 index,
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double* value) const;
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status_t FindPointer(const char* name,
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void** pointer) const;
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status_t FindPointer(const char* name, int32 index,
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void** pointer) const;
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status_t FindMessenger(const char* name,
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BMessenger* messenger) const;
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status_t FindMessenger(const char* name, int32 index,
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BMessenger* messenger) const;
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status_t FindRef(const char* name, entry_ref* ref) const;
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status_t FindRef(const char* name, int32 index,
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entry_ref* ref) const;
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status_t FindMessage(const char* name,
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BMessage* message) const;
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status_t FindMessage(const char* name, int32 index,
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BMessage* message) const;
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status_t FindFlat(const char* name,
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BFlattenable* object) const;
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status_t FindFlat(const char* name, int32 index,
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BFlattenable* object) const;
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status_t FindData(const char* name, type_code type,
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const void** data, ssize_t* numBytes) 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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// Replacing data
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status_t ReplaceAlignment(const char* name,
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const BAlignment& alignment);
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status_t ReplaceAlignment(const char* name, int32 index,
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const BAlignment& alignment);
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status_t ReplaceRect(const char* name, BRect rect);
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status_t ReplaceRect(const char* name, int32 index,
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BRect rect);
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status_t ReplacePoint(const char* name, BPoint aPoint);
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status_t ReplacePoint(const char* name, int32 index,
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BPoint aPoint);
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status_t ReplaceSize(const char* name, BSize aSize);
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status_t ReplaceSize(const char* name, int32 index,
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BSize aSize);
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status_t ReplaceString(const char* name,
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const char* string);
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status_t ReplaceString(const char* name, int32 index,
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const char* string);
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status_t ReplaceString(const char* name,
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const BString& string);
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status_t ReplaceString(const char* name, int32 index,
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const BString& string);
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status_t ReplaceInt8(const char* name, int8 value);
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status_t ReplaceInt8(const char* name, int32 index,
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int8 value);
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status_t ReplaceUInt8(const char* name, uint8 value);
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status_t ReplaceUInt8(const char* name, int32 index,
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uint8 value);
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status_t ReplaceInt16(const char* name, int16 value);
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status_t ReplaceInt16(const char* name, int32 index,
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int16 value);
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status_t ReplaceUInt16(const char* name, uint16 value);
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status_t ReplaceUInt16(const char* name, int32 index,
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uint16 value);
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status_t ReplaceInt32(const char* name, int32 value);
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status_t ReplaceInt32(const char* name, int32 index,
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int32 value);
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status_t ReplaceUInt32(const char* name, uint32 value);
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status_t ReplaceUInt32(const char* name, int32 index,
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uint32 value);
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status_t ReplaceInt64(const char* name, int64 value);
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status_t ReplaceInt64(const char* name, int32 index,
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int64 value);
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status_t ReplaceUInt64(const char* name, uint64 value);
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status_t ReplaceUInt64(const char* name, int32 index,
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uint64 value);
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status_t ReplaceBool(const char* name, bool aBoolean);
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status_t ReplaceBool(const char* name, int32 index,
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bool value);
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status_t ReplaceFloat(const char* name, float value);
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status_t ReplaceFloat(const char* name, int32 index,
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float value);
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status_t ReplaceDouble(const char* name, double value);
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status_t ReplaceDouble(const char* name, int32 index,
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double value);
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status_t ReplacePointer(const char* name,
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const void* pointer);
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status_t ReplacePointer(const char* name, int32 index,
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const void* pointer);
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status_t ReplaceMessenger(const char* name,
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BMessenger messenger);
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status_t ReplaceMessenger(const char* name, int32 index,
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BMessenger messenger);
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status_t ReplaceRef(const char* name,
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const entry_ref* ref);
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status_t ReplaceRef(const char* name, int32 index,
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const entry_ref* ref);
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status_t ReplaceMessage(const char* name,
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const BMessage* message);
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status_t ReplaceMessage(const char* name, int32 index,
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const BMessage* message);
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status_t ReplaceFlat(const char* name,
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BFlattenable* object);
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status_t ReplaceFlat(const char* name, int32 index,
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BFlattenable* object);
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status_t ReplaceData(const char* name, type_code type,
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const void* data, ssize_t numBytes);
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status_t ReplaceData(const char* name, type_code type,
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int32 index, const void* data,
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ssize_t numBytes);
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// Comparing data - Haiku experimental API
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bool HasSameData(const BMessage& other,
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bool ignoreFieldOrder = true,
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bool deep = false) const;
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void* operator new(size_t size);
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void* operator new(size_t, void* pointer);
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void* operator new(size_t,
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const std::nothrow_t& noThrow);
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void operator delete(void* pointer, size_t size);
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// Private, reserved, or obsolete
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bool HasAlignment(const char* name,
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int32 n = 0) const;
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bool HasRect(const char* name, int32 n = 0) const;
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bool HasPoint(const char* name, int32 n = 0) const;
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bool HasSize(const char* name, int32 n = 0) const;
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bool HasString(const char* name, int32 n = 0) const;
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bool HasInt8(const char* name, int32 n = 0) const;
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bool HasUInt8(const char* name, int32 n = 0) const;
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bool HasInt16(const char* name, int32 n = 0) const;
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bool HasUInt16(const char* name, int32 n = 0) const;
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bool HasInt32(const char* name, int32 n = 0) const;
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bool HasUInt32(const char* name, int32 n = 0) const;
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bool HasInt64(const char* name, int32 n = 0) const;
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bool HasUInt64(const char* name, int32 n = 0) const;
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bool HasBool(const char* name, int32 n = 0) const;
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bool HasFloat(const char* name, int32 n = 0) const;
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bool HasDouble(const char* name, int32 n = 0) const;
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bool HasPointer(const char* name, int32 n = 0) const;
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bool HasMessenger(const char* name,
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int32 n = 0) const;
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bool HasRef(const char* name, int32 n = 0) const;
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bool HasMessage(const char* name, int32 n = 0) const;
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bool HasFlat(const char* name,
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const BFlattenable* object) const;
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bool HasFlat(const char* name, int32 n,
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const BFlattenable* object) const;
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bool HasData(const char* name, type_code ,
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int32 n = 0) const;
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BRect FindRect(const char* name, int32 n = 0) const;
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BPoint FindPoint(const char* name, int32 n = 0) const;
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const char* FindString(const char* name, int32 n = 0) const;
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int8 FindInt8(const char* name, int32 n = 0) const;
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int16 FindInt16(const char* name, int32 n = 0) const;
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int32 FindInt32(const char* name, int32 n = 0) const;
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int64 FindInt64(const char* name, int32 n = 0) const;
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bool FindBool(const char* name, int32 n = 0) const;
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float FindFloat(const char* name, int32 n = 0) const;
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double FindDouble(const char* name, int32 n = 0) const;
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// Convenience methods
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bool GetBool(const char* name,
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bool defaultValue) const;
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bool GetBool(const char* name, int32 index,
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bool defaultValue) const;
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int8 GetInt8(const char* name,
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int8 defaultValue) const;
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int8 GetInt8(const char* name, int32 index,
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int8 defaultValue) const;
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uint8 GetUInt8(const char* name,
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uint8 defaultValue) const;
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uint8 GetUInt8(const char* name, int32 index,
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uint8 defaultValue) const;
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int16 GetInt16(const char* name,
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int16 defaultValue) const;
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int16 GetInt16(const char* name, int32 index,
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int16 defaultValue) const;
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uint16 GetUInt16(const char* name,
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uint16 defaultValue) const;
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uint16 GetUInt16(const char* name, int32 index,
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uint16 defaultValue) const;
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int32 GetInt32(const char* name,
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int32 defaultValue) const;
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int32 GetInt32(const char* name, int32 index,
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int32 defaultValue) const;
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uint32 GetUInt32(const char* name,
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uint32 defaultValue) const;
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uint32 GetUInt32(const char* name, int32 index,
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uint32 defaultValue) const;
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int64 GetInt64(const char* name,
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int64 defaultValue) const;
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int64 GetInt64(const char* name, int32 index,
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int64 defaultValue) const;
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uint64 GetUInt64(const char* name,
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uint64 defaultValue) const;
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uint64 GetUInt64(const char* name, int32 index,
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uint64 defaultValue) const;
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float GetFloat(const char* name,
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float defaultValue) const;
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float GetFloat(const char* name, int32 index,
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float defaultValue) const;
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double GetDouble(const char* name,
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double defaultValue) const;
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double GetDouble(const char* name, int32 index,
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double defaultValue) const;
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void* GetPointer(const char* name,
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const void* defaultValue) const;
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void* GetPointer(const char* name, int32 index,
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const void* defaultValue) const;
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const char* GetString(const char* name,
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const char* defaultValue) const;
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const char* GetString(const char* name, int32 index,
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const char* defaultValue) const;
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BAlignment GetAlignment(const char* name, int32 index,
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const BAlignment& defaultValue) const;
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BAlignment GetAlignment(const char* name,
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const BAlignment& defaultValue) const;
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BRect GetRect(const char* name, int32 index,
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const BRect& defaultValue) const;
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BRect GetRect(const char* name,
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const BRect& defaultValue) const;
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BPoint GetPoint(const char* name, int32 index,
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const BPoint& defaultValue) const;
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BPoint GetPoint(const char* name,
|
|
const BPoint& defaultValue) const;
|
|
BSize GetSize(const char* name, int32 index,
|
|
const BSize& defaultValue) const;
|
|
BSize GetSize(const char* name,
|
|
const BSize& defaultValue) const;
|
|
|
|
// fixed size fields only
|
|
status_t SetBool(const char* name, bool value);
|
|
status_t SetInt8(const char* name, int8 value);
|
|
status_t SetUInt8(const char* name, uint8 value);
|
|
status_t SetInt16(const char* name, int16 value);
|
|
status_t SetUInt16(const char* name, uint16 value);
|
|
status_t SetInt32(const char* name, int32 value);
|
|
status_t SetUInt32(const char* name, uint32 value);
|
|
status_t SetInt64(const char* name, int64 value);
|
|
status_t SetUInt64(const char* name, uint64 value);
|
|
status_t SetPointer(const char* name, const void* value);
|
|
status_t SetString(const char* name, const char* string);
|
|
status_t SetString(const char* name,
|
|
const BString& string);
|
|
status_t SetFloat(const char* name, float value);
|
|
status_t SetDouble(const char* name, double value);
|
|
status_t SetAlignment(const char* name,
|
|
const BAlignment& value);
|
|
status_t SetPoint(const char* name, const BPoint& value);
|
|
status_t SetRect(const char* name, const BRect& value);
|
|
status_t SetSize(const char* name, const BSize& value);
|
|
status_t SetData(const char* name, type_code type,
|
|
const void* data, ssize_t numBytes);
|
|
|
|
class Private;
|
|
struct message_header;
|
|
struct field_header;
|
|
|
|
private:
|
|
friend class Private;
|
|
friend class BMessageQueue;
|
|
|
|
status_t _InitCommon(bool initHeader);
|
|
status_t _InitHeader();
|
|
status_t _Clear();
|
|
|
|
status_t _FlattenToArea(message_header** _header) const;
|
|
status_t _CopyForWrite();
|
|
status_t _Reference();
|
|
status_t _Dereference();
|
|
|
|
status_t _ValidateMessage();
|
|
|
|
status_t _ResizeData(uint32 offset, int32 change);
|
|
|
|
uint32 _HashName(const char* name) const;
|
|
status_t _FindField(const char* name, type_code type,
|
|
field_header** _result) const;
|
|
status_t _AddField(const char* name, type_code type,
|
|
bool isFixedSize, field_header** _result);
|
|
status_t _RemoveField(field_header* field);
|
|
|
|
void _PrintToStream(const char* indent) const;
|
|
|
|
private:
|
|
BMessage(BMessage* message);
|
|
// deprecated
|
|
|
|
virtual void _ReservedMessage1();
|
|
virtual void _ReservedMessage2();
|
|
virtual void _ReservedMessage3();
|
|
|
|
status_t _SendMessage(port_id port, team_id portOwner,
|
|
int32 token, bigtime_t timeout,
|
|
bool replyRequired,
|
|
BMessenger& replyTo) const;
|
|
status_t _SendMessage(port_id port, team_id portOwner,
|
|
int32 token, BMessage* reply,
|
|
bigtime_t sendTimeout,
|
|
bigtime_t replyTimeout) const;
|
|
static status_t _SendFlattenedMessage(void* data, int32 size,
|
|
port_id port, int32 token,
|
|
bigtime_t timeout);
|
|
|
|
static void _StaticInit();
|
|
static void _StaticReInitForkedChild();
|
|
static void _StaticCleanup();
|
|
static void _StaticCacheCleanup();
|
|
static int32 _StaticGetCachedReplyPort();
|
|
|
|
private:
|
|
message_header* fHeader;
|
|
field_header* fFields;
|
|
uint8* fData;
|
|
|
|
uint32 fFieldsAvailable;
|
|
size_t fDataAvailable;
|
|
|
|
mutable BMessage* fOriginal;
|
|
|
|
BMessage* fQueueLink;
|
|
// fQueueLink is used by BMessageQueue to build a linked list
|
|
|
|
void* fArchivingPointer;
|
|
|
|
uint32 fReserved[8];
|
|
|
|
enum { sNumReplyPorts = 3 };
|
|
static port_id sReplyPorts[sNumReplyPorts];
|
|
static int32 sReplyPortInUse[sNumReplyPorts];
|
|
static int32 sGetCachedReplyPort();
|
|
|
|
static BBlockCache* sMsgCache;
|
|
};
|
|
|
|
|
|
#endif // _MESSAGE_H
|