This is all the code for the backing store for BMessage (BMessageBody &
BMessageField) for the "template madness" version. Also included is BDataBuffer which is a little reference counting raw data container. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2955 a95241bf-73f2-0310-859d-f6bbb57e9c96
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ejakowatz
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//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: MessageBody.h
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// Author(s): Erik Jaesler ([email protected])
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// Description: BMessageBody handles data storage and retrieval for
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// BMessage.
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//------------------------------------------------------------------------------
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#ifndef MESSAGEBODY_H
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#define MESSAGEBODY_H
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#include <MessageField.h>
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// Standard Includes -----------------------------------------------------------
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#include <map>
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#include <stdio.h>
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#include <string>
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// System Includes -------------------------------------------------------------
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#include <Entry.h>
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#include <Path.h>
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#include <Point.h>
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#include <Rect.h>
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//#include <StreamIO.h>
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#include <String.h>
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#include <SupportDefs.h>
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// Project Includes ------------------------------------------------------------
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// Local Includes --------------------------------------------------------------
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// Local Defines ---------------------------------------------------------------
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// Globals ---------------------------------------------------------------------
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enum { B_FLATTENABLE_TYPE = 'FLAT' };
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namespace BPrivate {
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class BMessageBody
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{
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public:
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BMessageBody();
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BMessageBody(const BMessageBody& rhs);
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~BMessageBody();
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BMessageBody& operator=(const BMessageBody& rhs);
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// Statistics and misc info
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status_t GetInfo(type_code typeRequested, int32 which, char **name,
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type_code *typeReturned, int32 *count = NULL) const;
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status_t GetInfo(const char *name, type_code *type, int32 *c = 0) const;
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status_t GetInfo(const char *name, type_code *type, bool *fixed_size) 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 *old_entry, const char *new_entry);
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// Flattening data
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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(const char *flat_buffer);
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status_t Unflatten(BDataIO *stream);
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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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bool HasData(const char* name, type_code t, int32 n) const;
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template<class T1>
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status_t AddData(const char* name, const T1& data, type_code type);
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status_t FindData(const char* name, type_code type, int32 index,
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const void** data, ssize_t* numBytes) const;
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template<class T1>
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status_t FindData(const char* name, int32 index, T1* data, type_code type);
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template<class T1>
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status_t ReplaceData(const char* name, int32 index, const T1& data, type_code type);
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#if 0
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void *operator new(size_t size);
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void operator delete(void *ptr, size_t size);
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#endif
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private:
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BMessageField* FindData(const char *name, type_code type,
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status_t& err) const;
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typedef std::map<std::string, BMessageField*> TMsgDataMap;
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TMsgDataMap fData;
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ssize_t fFlattenedSize;
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};
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//------------------------------------------------------------------------------
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template<class T1>
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status_t BMessageBody::AddData(const char *name, const T1 &data, type_code type)
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{
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// The flattened message format in R5 only allows 1 byte
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// for the length of field names
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if (strlen(name) > 255) return B_BAD_VALUE;
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status_t err = B_OK;
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BMessageField* BMF = FindData(name, type, err);
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// Reset err; we just want the variable
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err = B_OK;
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if (!BMF)
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{
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BMF = new(nothrow) BMessageFieldImpl<T1>(name, type);
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if (BMF)
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{
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fData[name] = BMF;
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}
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else
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{
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err = B_NO_MEMORY;
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}
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}
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if (!err)
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{
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BMessageFieldImpl<T1>* RItem =
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dynamic_cast<BMessageFieldImpl<T1>*>(BMF);
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if (!RItem)
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{
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debugger("\n\n\tyou \033[44;1;37mB\033[41;1;37me\033[m screwed\n\n");
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}
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RItem->AddItem(data);
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}
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return err;
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}
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//------------------------------------------------------------------------------
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template<class T1>
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status_t BMessageBody::FindData(const char *name, int32 index, T1 *data,
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type_code type)
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{
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status_t err = B_OK;
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if (index < 0)
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{
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err = B_BAD_INDEX;
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}
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else
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{
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BMessageField* Item = FindData(name, type, err);
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if (Item)
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{
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BMessageFieldImpl<T1>* RItem =
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dynamic_cast<BMessageFieldImpl<T1>*>(Item);
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if (!RItem)
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{
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debugger("\n\n\tyou \033[44;1;37mB\033[41;1;37me"
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"\033[m screwed\n\n");
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}
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if (index < RItem->CountItems())
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{
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*data = RItem->Data()[index];
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}
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else
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{
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err = B_BAD_INDEX;
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}
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}
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}
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return err;
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}
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//------------------------------------------------------------------------------
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template<class T1>
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status_t BMessageBody::ReplaceData(const char *name, int32 index,
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const T1 &data, type_code type)
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{
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status_t err = B_OK;
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if (index < 0)
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{
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err = B_BAD_INDEX;
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}
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else
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{
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BMessageField* Item = FindData(name, type, err);
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if (Item)
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{
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BMessageFieldImpl<T1>* RItem =
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dynamic_cast<BMessageFieldImpl<T1>*>(Item);
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if (!RItem)
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{
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debugger("\n\n\tyou \033[44;1;37mB\033[41;1;37me\033[m screwed\n\n");
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}
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if (index < RItem->Data().Size())
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{
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RItem->Data()[index] = data;
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}
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else
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{
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err = B_BAD_INDEX;
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}
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}
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}
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return err;
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}
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//------------------------------------------------------------------------------
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} // namespace BPrivate
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#endif //MESSAGEBODY_H
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/*
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* $Log $
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*
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* $Id $
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*
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*/
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