440 lines
17 KiB
C
440 lines
17 KiB
C
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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: Message.h
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// Author(s): Erik Jaesler (erik@cgsoftware.com)
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// DarkWyrm <bpmagic@columbus.rr.com>
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// Description: BMessage class creates objects that store data and that
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// can be processed in a message loop. BMessage objects
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// are also used as data containers by the archiving and
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// the scripting mechanisms.
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//------------------------------------------------------------------------------
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#ifndef _MESSAGE_H
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#define _MESSAGE_H
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// Standard Includes -----------------------------------------------------------
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// System Includes -------------------------------------------------------------
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#include <BeBuild.h>
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#include <OS.h>
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#include <Rect.h>
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#include <DataIO.h>
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#include <Flattenable.h>
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#include <AppDefs.h> /* For convenience */
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#include <TypeConstants.h> /* For convenience */
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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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class BBlockCache;
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class BMessenger;
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class BHandler;
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class BString;
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// Private or reserved ---------------------------------------------------------
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extern "C" void _msg_cache_cleanup_();
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extern "C" int _init_message_();
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extern "C" int _delete_message_();
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//------------------------------------------------------------------------------
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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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{
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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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namespace BPrivate {
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class BMessageBody;
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}
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// BMessage class --------------------------------------------------------------
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class BMessage
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{
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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 &a_message);
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virtual ~BMessage();
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BMessage &operator=(const BMessage &msg);
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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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// Delivery info
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bool WasDelivered() const;
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bool IsSourceWaiting() 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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// 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, ssize_t *size = NULL) 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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// 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, int32 range);
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status_t AddSpecifier(const char *property, 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, BMessage *specifier = NULL,
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int32 *form = NULL, 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 AddRect(const char *name, BRect a_rect);
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status_t AddPoint(const char *name, BPoint a_point);
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status_t AddString(const char *name, const char *a_string);
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status_t AddString(const char *name, const BString& a_string);
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status_t AddInt8(const char *name, int8 val);
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status_t AddInt16(const char *name, int16 val);
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status_t AddInt32(const char *name, int32 val);
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status_t AddInt64(const char *name, int64 val);
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status_t AddBool(const char *name, bool a_boolean);
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status_t AddFloat(const char *name, float a_float);
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status_t AddDouble(const char *name, double a_double);
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status_t AddPointer(const char *name, const void *ptr);
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status_t AddMessenger(const char *name, 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, const BMessage *msg);
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status_t AddFlat(const char *name, BFlattenable *obj, int32 count = 1);
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status_t AddData(const char *name, type_code type, const void *data,
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ssize_t numBytes, bool is_fixed_size = true, int32 count = 1);
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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 FindRect(const char *name, BRect *rect) const;
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status_t FindRect(const char *name, int32 index, BRect *rect) const;
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status_t FindPoint(const char *name, BPoint *pt) const;
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status_t FindPoint(const char *name, int32 index, BPoint *pt) const;
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status_t FindString(const char *name, const char **str) const;
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status_t FindString(const char *name, int32 index, const char **str) const;
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status_t FindString(const char *name, BString *str) const;
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status_t FindString(const char *name, int32 index, BString *str) 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, int8 *val) 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, int16 *val) 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, int32 *val) 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, int64 *val) 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, bool *value) const;
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status_t FindFloat(const char *name, float *f) const;
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status_t FindFloat(const char *name, int32 index, float *f) const;
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status_t FindDouble(const char *name, double *d) const;
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status_t FindDouble(const char *name, int32 index, double *d) const;
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status_t FindPointer(const char *name, void **ptr) const;
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status_t FindPointer(const char *name, int32 index, void **ptr) const;
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status_t FindMessenger(const char *name, BMessenger *m) const;
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status_t FindMessenger(const char *name, int32 index, BMessenger *m) 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, entry_ref *ref) const;
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status_t FindMessage(const char *name, BMessage *msg) const;
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status_t FindMessage(const char *name, int32 index, BMessage *msg) const;
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status_t FindFlat(const char *name, BFlattenable *obj) const;
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status_t FindFlat(const char *name, int32 index, BFlattenable *obj) 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, int32 index,
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const void **data, ssize_t *numBytes) const;
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// Replacing data
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status_t ReplaceRect(const char *name, BRect a_rect);
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status_t ReplaceRect(const char *name, int32 index, BRect a_rect);
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status_t ReplacePoint(const char *name, BPoint a_point);
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status_t ReplacePoint(const char *name, int32 index, BPoint a_point);
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status_t ReplaceString(const char *name, const char *string);
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status_t ReplaceString(const char *name, int32 index, const char *string);
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status_t ReplaceString(const char *name, const BString& string);
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status_t ReplaceString(const char *name, int32 index, const BString& string);
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status_t ReplaceInt8(const char *name, int8 val);
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status_t ReplaceInt8(const char *name, int32 index, int8 val);
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status_t ReplaceInt16(const char *name, int16 val);
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status_t ReplaceInt16(const char *name, int32 index, int16 val);
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status_t ReplaceInt32(const char *name, int32 val);
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status_t ReplaceInt32(const char *name, int32 index, int32 val);
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status_t ReplaceInt64(const char *name, int64 val);
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status_t ReplaceInt64(const char *name, int32 index, int64 val);
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status_t ReplaceBool(const char *name, bool a_bool);
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status_t ReplaceBool(const char *name, int32 index, bool a_bool);
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status_t ReplaceFloat(const char *name, float a_float);
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status_t ReplaceFloat(const char *name, int32 index, float a_float);
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status_t ReplaceDouble(const char *name, double a_double);
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status_t ReplaceDouble(const char *name, int32 index, double a_double);
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status_t ReplacePointer(const char *name, const void *ptr);
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status_t ReplacePointer(const char *name,int32 index,const void *ptr);
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status_t ReplaceMessenger(const char *name, BMessenger messenger);
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status_t ReplaceMessenger(const char *name, int32 index, BMessenger msngr);
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status_t ReplaceRef( const char *name,const entry_ref *ref);
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status_t ReplaceRef( const char *name, int32 index, const entry_ref *ref);
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status_t ReplaceMessage(const char *name, const BMessage *msg);
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status_t ReplaceMessage(const char *name, int32 index, const BMessage *msg);
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status_t ReplaceFlat(const char *name, BFlattenable *obj);
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status_t ReplaceFlat(const char *name, int32 index, BFlattenable *obj);
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status_t ReplaceData(const char *name, type_code type,
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const void *data, ssize_t data_size);
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status_t ReplaceData(const char *name, type_code type, int32 index,
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const void *data, ssize_t data_size);
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void *operator new(size_t size);
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void *operator new(size_t, void* p);
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void operator delete(void *ptr, size_t size);
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// Private, reserved, or obsolete ----------------------------------------------
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bool HasRect(const char *, int32 n = 0) const;
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bool HasPoint(const char *, int32 n = 0) const;
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bool HasString(const char *, int32 n = 0) const;
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bool HasInt8(const char *, int32 n = 0) const;
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bool HasInt16(const char *, int32 n = 0) const;
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bool HasInt32(const char *, int32 n = 0) const;
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bool HasInt64(const char *, int32 n = 0) const;
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bool HasBool(const char *, int32 n = 0) const;
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bool HasFloat(const char *, int32 n = 0) const;
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bool HasDouble(const char *, int32 n = 0) const;
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bool HasPointer(const char *, int32 n = 0) const;
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bool HasMessenger(const char *, int32 n = 0) const;
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bool HasRef(const char *, int32 n = 0) const;
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bool HasMessage(const char *, int32 n = 0) const;
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bool HasFlat(const char *, const BFlattenable *) const;
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bool HasFlat(const char *,int32 ,const BFlattenable *) const;
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bool HasData(const char *, type_code , int32 n = 0) const;
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BRect FindRect(const char *, int32 n = 0) const;
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BPoint FindPoint(const char *, int32 n = 0) const;
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const char *FindString(const char *, int32 n = 0) const;
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int8 FindInt8(const char *, int32 n = 0) const;
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int16 FindInt16(const char *, int32 n = 0) const;
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int32 FindInt32(const char *, int32 n = 0) const;
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int64 FindInt64(const char *, int32 n = 0) const;
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bool FindBool(const char *, int32 n = 0) const;
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float FindFloat(const char *, int32 n = 0) const;
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double FindDouble(const char *, int32 n = 0) const;
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class Private;
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private:
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class Header;
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friend class BMessageQueue;
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friend class BMessenger;
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friend class BApplication;
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friend class Header;
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friend class Private;
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friend inline void _set_message_target_(BMessage *, int32, bool);
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friend inline void _set_message_reply_(BMessage *, BMessenger);
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friend inline int32 _get_message_target_(BMessage *);
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friend inline bool _use_preferred_target_(BMessage *);
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// deprecated
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BMessage(BMessage *a_message);
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virtual void _ReservedMessage1();
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virtual void _ReservedMessage2();
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virtual void _ReservedMessage3();
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void init_data();
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status_t flatten_target_info(BDataIO *stream,
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ssize_t size,
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uchar flags) const;
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status_t real_flatten(char *result,
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ssize_t size) const;
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status_t real_flatten(BDataIO *stream) const;
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char *stack_flatten(char *stack_ptr,
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ssize_t stack_size,
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bool incl_reply,
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ssize_t *size = NULL) const;
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ssize_t calc_size(uchar flags) const;
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ssize_t calc_hdr_size(uchar flags) const;
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status_t nfind_data( const char *name,
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type_code type,
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int32 index,
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const void **data,
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ssize_t *data_size) const;
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status_t copy_data( const char *name,
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type_code type,
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int32 index,
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void *data,
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ssize_t data_size) const;
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static void _StaticInit();
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static void _StaticCleanup();
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static void _StaticCacheCleanup();
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static BBlockCache *sMsgCache;
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struct dyn_array {
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int32 fLogicalBytes;
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int32 fPhysicalBytes;
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int32 fChunkSize;
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int32 fCount;
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int32 fEntryHdrSize;
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};
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struct entry_hdr : public dyn_array {
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entry_hdr *fNext;
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uint32 fType;
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uchar fNameLength;
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char fName[1];
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};
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struct var_chunk {
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int32 fDataSize;
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char fData[1];
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};
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entry_hdr *entry_find(const char *name, uint32 type,status_t *result=NULL) const;
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void entry_remove(entry_hdr *entry);
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void *da_create(int32 header_size, int32 chunk_size,
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bool fixed, int32 nchunks);
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status_t da_add_data(dyn_array **da, const void *data, int32 size);
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void *da_find_data(dyn_array *da, int32 index,
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int32 *size = NULL) const;
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status_t da_delete_data(dyn_array **pda, int32 index);
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status_t da_replace_data(dyn_array **pda, int32 index,
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const void *data, int32 dsize);
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int32 da_calc_size(int32 hdr_size, int32 chunksize,
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bool is_fixed, int32 nchunks) const;
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void *da_grow(dyn_array **pda, int32 increase);
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void da_dump(dyn_array *da);
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int32 da_chunk_hdr_size() const
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{ return sizeof(int32); }
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int32 da_chunk_size(var_chunk *v) const
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{ return (v->fDataSize + da_chunk_hdr_size() + 7) & ~7; }
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var_chunk *da_first_chunk(dyn_array *da) const
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{ return (var_chunk *) da_start_of_data(da); }
|
||
|
var_chunk *da_next_chunk(var_chunk *v) const
|
||
|
{ return (var_chunk *) (((char*) v) + da_chunk_size(v)); }
|
||
|
var_chunk *da_chunk_ptr(void *data) const
|
||
|
{ return (var_chunk*) (((char *) data) - da_chunk_hdr_size()); }
|
||
|
|
||
|
int32 da_pad_8(int32 val) const
|
||
|
{ return (val + 7) & ~7; }
|
||
|
int32 da_total_size(dyn_array *da) const
|
||
|
{ return (int32)sizeof(dyn_array) + da->fEntryHdrSize +
|
||
|
da->fPhysicalBytes; }
|
||
|
int32 da_total_logical_size(dyn_array *da) const
|
||
|
{ return (int32)sizeof(dyn_array) + da->fEntryHdrSize +
|
||
|
da->fLogicalBytes; }
|
||
|
char *da_start_of_data(dyn_array *da) const
|
||
|
{ return ((char *) da) + (sizeof(dyn_array) +
|
||
|
da->fEntryHdrSize); }
|
||
|
bool da_is_mini_data(dyn_array *da) const
|
||
|
{ return ((da->fLogicalBytes <= (int32) UCHAR_MAX) &&
|
||
|
(da->fCount <= (int32) UCHAR_MAX));}
|
||
|
void da_swap_var_sized(dyn_array *da);
|
||
|
void da_swap_fixed_sized(dyn_array *da);
|
||
|
|
||
|
BMessage *link;
|
||
|
int32 fTarget;
|
||
|
BMessage *fOriginal;
|
||
|
uint32 fChangeCount;
|
||
|
int32 fCurSpecifier;
|
||
|
uint32 fPtrOffset;
|
||
|
|
||
|
// ejaesler: Stealing one for my whacky BMessageBody l33tness
|
||
|
uint32 _reserved[2];
|
||
|
BPrivate::BMessageBody* fBody;
|
||
|
|
||
|
BMessage::entry_hdr *fEntries;
|
||
|
|
||
|
struct reply_to_info {
|
||
|
port_id port;
|
||
|
int32 target;
|
||
|
team_id team;
|
||
|
bool preferred;
|
||
|
} fReplyTo;
|
||
|
|
||
|
bool fPreferred;
|
||
|
bool fReplyRequired;
|
||
|
bool fReplyDone;
|
||
|
bool fIsReply;
|
||
|
bool fWasDelivered;
|
||
|
bool fReadOnly;
|
||
|
bool fHasSpecifiers;
|
||
|
};
|
||
|
|
||
|
//------------------------------------------------------------------------------
|
||
|
|
||
|
#endif // _MESSAGE_H
|
||
|
|
||
|
/*
|
||
|
* $Log $
|
||
|
*
|
||
|
* $Id $
|
||
|
*
|
||
|
*/
|
||
|
|