This is the third implementation of BMessage. It operates purly on a flat buffer. It should be completely working and it is fast. See: http://haiku.mlotz.ch/messagespeed.html
Sorry to pollute the repository with all those extra files, they will be (re-)moved when the decision about which implementation to use is made. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13916 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz
parent
896d777151
commit
3019039f4f
454
headers/private/app/Message3.h
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454
headers/private/app/Message3.h
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//------------------------------------------------------------------------------
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// Copyright (c) 2001-2005, Haiku
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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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#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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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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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, BHandler *reply_to = NULL);
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status_t SendReply(BMessage *the_reply, BHandler *reply_to = NULL,
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bigtime_t timeout = B_INFINITE_TIMEOUT);
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status_t SendReply(BMessage *the_reply, BMessenger reply_to,
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bigtime_t timeout = B_INFINITE_TIMEOUT);
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status_t SendReply(uint32 command, BMessage *reply_to_reply);
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status_t SendReply(BMessage *the_reply, BMessage *reply_to_reply,
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bigtime_t send_timeout = B_INFINITE_TIMEOUT,
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bigtime_t reply_timeout = 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, 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, ssize_t size) const;
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status_t real_flatten(BDataIO *stream, ssize_t *size) 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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status_t _UnflattenKMessage(const char *buffer);
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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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status_t _send_(port_id port,
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int32 token,
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bool preferred,
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bigtime_t timeout,
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bool reply_required,
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BMessenger &reply_to) const;
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status_t send_message(port_id port,
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team_id port_owner,
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int32 token,
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bool preferred,
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BMessage *reply,
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bigtime_t send_timeout,
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bigtime_t reply_timeout) const;
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static status_t _SendFlattenedMessage(void *data, int32 size,
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port_id port, int32 token, bool preferred,
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bigtime_t timeout);
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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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enum { sNumReplyPorts = 3 };
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static port_id sReplyPorts[sNumReplyPorts];
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static long sReplyPortInUse[sNumReplyPorts];
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static int32 sGetCachedReplyPort();
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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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||||
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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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||||
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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
|
||||
{ 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
|
||||
98
headers/private/app/MessageBody3.h
Normal file
98
headers/private/app/MessageBody3.h
Normal file
@ -0,0 +1,98 @@
|
||||
/*
|
||||
* Copyright 2005, Haiku.
|
||||
* Distributed under the terms of the MIT License.
|
||||
*
|
||||
* Authors:
|
||||
* Michael Lotz <mmlr@mlotz.ch>
|
||||
*/
|
||||
|
||||
/* BMessageBody handles data storage and retrieval for BMessage. */
|
||||
|
||||
#ifndef _MESSAGE_BODY_H_
|
||||
#define _MESSAGE_BODY_H_
|
||||
|
||||
#include <List.h>
|
||||
#include "MessageField3.h"
|
||||
|
||||
enum {
|
||||
B_FLATTENABLE_TYPE = 'FLAT'
|
||||
};
|
||||
|
||||
namespace BPrivate {
|
||||
|
||||
class BMessageBody {
|
||||
public:
|
||||
BMessageBody();
|
||||
BMessageBody(const BMessageBody &other);
|
||||
~BMessageBody();
|
||||
|
||||
BMessageBody &operator=(const BMessageBody &other);
|
||||
|
||||
status_t GetInfo(type_code typeRequested, int32 which,
|
||||
char **name, type_code *typeFound,
|
||||
int32 *countFound = NULL) const;
|
||||
status_t GetInfo(const char *name, type_code *typeFound,
|
||||
int32 *countFound = NULL) const;
|
||||
status_t GetInfo(const char *name, type_code *typeFound,
|
||||
bool *fixedSize) const;
|
||||
|
||||
int32 CountNames(type_code type) const;
|
||||
bool IsEmpty() const;
|
||||
|
||||
ssize_t FlattenedSize() const;
|
||||
status_t Flatten(BDataIO *stream) const;
|
||||
status_t Unflatten(BDataIO *stream, int32 length);
|
||||
|
||||
status_t AddData(const char *name, type_code type,
|
||||
const void *item, ssize_t length,
|
||||
bool fixedSize);
|
||||
status_t AddData(const char *name, type_code type,
|
||||
void **buffer, ssize_t length);
|
||||
status_t ReplaceData(const char *name, type_code type,
|
||||
int32 index, const void *item, ssize_t length);
|
||||
status_t ReplaceData(const char *name, type_code type,
|
||||
int32 index, void **buffer, ssize_t length);
|
||||
|
||||
status_t RemoveData(const char *name, int32 index = 0);
|
||||
|
||||
bool HasData(const char *name, type_code t,
|
||||
int32 index) const;
|
||||
status_t FindData(const char *name, type_code type,
|
||||
int32 index, const void **data,
|
||||
ssize_t *numBytes) const;
|
||||
|
||||
status_t Rename(const char *oldName, const char *newName);
|
||||
status_t RemoveName(const char *name);
|
||||
status_t MakeEmpty();
|
||||
|
||||
void PrintToStream() const;
|
||||
|
||||
// flat buffer management
|
||||
uint8 *FlatBuffer() const { return (uint8 *)fFlatBuffer.Buffer(); };
|
||||
uint8 *FlatInsert(int32 offset, ssize_t oldLength,
|
||||
ssize_t newLength);
|
||||
|
||||
// hash table support
|
||||
void HashInsert(BMessageField *field);
|
||||
BMessageField *HashLookup(const char *name) const;
|
||||
BMessageField *HashRemove(const char *name);
|
||||
uint32 HashString(const char *string) const;
|
||||
void HashClear();
|
||||
|
||||
private:
|
||||
status_t InitCommon();
|
||||
BMessageField *AddData(const char *name, type_code type,
|
||||
status_t &error);
|
||||
BMessageField *FindData(const char *name, type_code type,
|
||||
status_t &error) const;
|
||||
|
||||
BList fFieldList;
|
||||
BMessageField **fFieldTable;
|
||||
int32 fFieldTableSize;
|
||||
|
||||
BMallocIO fFlatBuffer;
|
||||
};
|
||||
|
||||
} // namespace BPrivate
|
||||
|
||||
#endif // _MESSAGE_BODY_H_
|
||||
121
headers/private/app/MessageField3.h
Normal file
121
headers/private/app/MessageField3.h
Normal file
@ -0,0 +1,121 @@
|
||||
/*
|
||||
* Copyright 2005, Haiku.
|
||||
* Distributed under the terms of the MIT License.
|
||||
*
|
||||
* Authors:
|
||||
* Michael Lotz <mmlr@mlotz.ch>
|
||||
*/
|
||||
|
||||
/* BMessageField contains the data for indiviual named fields in BMessageBody */
|
||||
|
||||
#ifndef _MESSAGE_FIELD_H_
|
||||
#define _MESSAGE_FIELD_H_
|
||||
|
||||
#include <List.h>
|
||||
#include <String.h>
|
||||
#include <SupportDefs.h>
|
||||
|
||||
// we only support those
|
||||
#define MSG_FLAG_VALID 0x01
|
||||
#define MSG_FLAG_FIXED_SIZE 0x04
|
||||
#define MSG_FLAG_ALL 0x05
|
||||
|
||||
// these are for R5 compatibility
|
||||
#define MSG_FLAG_MINI_DATA 0x02
|
||||
#define MSG_FLAG_SINGLE_ITEM 0x08
|
||||
|
||||
#define MSG_LAST_ENTRY 0x00
|
||||
|
||||
namespace BPrivate {
|
||||
|
||||
struct field_header_s {
|
||||
uint8 flags;
|
||||
type_code type;
|
||||
int32 count;
|
||||
ssize_t dataSize;
|
||||
uint8 nameLength;
|
||||
} __attribute__((__packed__));
|
||||
|
||||
struct item_info_s {
|
||||
item_info_s(int32 _offset)
|
||||
: offset(_offset)
|
||||
{
|
||||
}
|
||||
|
||||
item_info_s(int32 _offset, int32 _length)
|
||||
: offset(_offset),
|
||||
length(_length)
|
||||
{
|
||||
}
|
||||
|
||||
int32 offset;
|
||||
int32 length;
|
||||
int32 paddedLength;
|
||||
};
|
||||
|
||||
typedef field_header_s FieldHeader;
|
||||
typedef item_info_s ItemInfo;
|
||||
|
||||
class BMessageBody;
|
||||
|
||||
class BMessageField {
|
||||
public:
|
||||
BMessageField(BMessageBody *parent,
|
||||
int32 offset, const char *name,
|
||||
type_code type);
|
||||
|
||||
BMessageField(BMessageBody *parent);
|
||||
~BMessageField();
|
||||
|
||||
int32 Unflatten(int32 offset);
|
||||
|
||||
uint8 Flags() const { return fHeader->flags; };
|
||||
status_t SetFixedSize(int32 itemSize);
|
||||
bool FixedSize() const { return fHeader->flags & MSG_FLAG_FIXED_SIZE; };
|
||||
|
||||
void SetName(const char *newName);
|
||||
const char *Name() const;
|
||||
uint8 NameLength() const { return fHeader->nameLength; };
|
||||
type_code Type() const { return fHeader->type; };
|
||||
|
||||
void AddItem(const void *item, ssize_t length);
|
||||
uint8 *AddItem(ssize_t length);
|
||||
|
||||
void ReplaceItem(int32 index, const void *newItem,
|
||||
ssize_t length);
|
||||
uint8 *ReplaceItem(int32 index, ssize_t length);
|
||||
|
||||
void *ItemAt(int32 index, ssize_t *size);
|
||||
|
||||
void RemoveItem(int32 index);
|
||||
int32 CountItems() const { return fHeader->count; };
|
||||
|
||||
void PrintToStream() const;
|
||||
|
||||
void SetOffset(int32 offset);
|
||||
int32 Offset() const { return fOffset; };
|
||||
|
||||
// always do MakeEmpty -> RemoveSelf -> delete
|
||||
void MakeEmpty();
|
||||
void RemoveSelf();
|
||||
|
||||
// hash table support
|
||||
void SetNext(BMessageField *next) { fNext = next; };
|
||||
BMessageField *Next() const { return fNext; };
|
||||
|
||||
private:
|
||||
bool IsFixedSize(type_code type);
|
||||
|
||||
BMessageBody *fParent;
|
||||
int32 fOffset;
|
||||
FieldHeader *fHeader;
|
||||
|
||||
int32 fItemSize;
|
||||
BList fItemInfos;
|
||||
|
||||
BMessageField *fNext;
|
||||
};
|
||||
|
||||
} // namespace BPrivate
|
||||
|
||||
#endif // _MESSAGE_FIELD_H_
|
||||
230
headers/private/app/MessageUtils3.h
Normal file
230
headers/private/app/MessageUtils3.h
Normal file
@ -0,0 +1,230 @@
|
||||
#ifndef MESSAGEUTILS_H
|
||||
#define MESSAGEUTILS_H
|
||||
|
||||
#include <ByteOrder.h>
|
||||
#include <DataIO.h>
|
||||
#include <Entry.h>
|
||||
#include <Message.h>
|
||||
#include <Messenger.h>
|
||||
#include <MessengerPrivate.h>
|
||||
#include <SupportDefs.h>
|
||||
|
||||
|
||||
uint32 _checksum_(const uchar *buf, int32 size);
|
||||
|
||||
namespace BPrivate { // Only putting these here because Be did
|
||||
|
||||
status_t entry_ref_flatten(char* buffer, size_t* size, const entry_ref* ref);
|
||||
status_t entry_ref_unflatten(entry_ref* ref, const char* buffer, size_t size);
|
||||
status_t entry_ref_swap(char* buffer, size_t size);
|
||||
|
||||
size_t calc_padding(size_t size, size_t boundary);
|
||||
|
||||
} // namespace BPrivate
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
// _set_message_target_
|
||||
/*! \brief Sets the target of a message.
|
||||
|
||||
\param message The message.
|
||||
\param token The target handler token.
|
||||
\param preferred Indicates whether to use the looper's preferred handler.
|
||||
*/
|
||||
inline void
|
||||
_set_message_target_(BMessage *message, int32 token, bool preferred)
|
||||
{
|
||||
message->fTarget = token;
|
||||
message->fPreferred = preferred;
|
||||
}
|
||||
|
||||
|
||||
// _set_message_reply_
|
||||
/*! \brief Sets a message's reply target.
|
||||
|
||||
\param message The message.
|
||||
\param messenger The reply messenger.
|
||||
*/
|
||||
inline void
|
||||
_set_message_reply_(BMessage *message, BMessenger messenger)
|
||||
{
|
||||
BMessenger::Private messengerPrivate(messenger);
|
||||
message->fReplyTo.port = messengerPrivate.Port();
|
||||
message->fReplyTo.target = messengerPrivate.Token();
|
||||
message->fReplyTo.team = messengerPrivate.Team();
|
||||
message->fReplyTo.preferred = messengerPrivate.IsPreferredTarget();
|
||||
}
|
||||
|
||||
|
||||
inline int32
|
||||
_get_message_target_(BMessage *msg)
|
||||
{
|
||||
return msg->fTarget;
|
||||
}
|
||||
|
||||
|
||||
inline bool
|
||||
_use_preferred_target_(BMessage *msg)
|
||||
{
|
||||
return msg->fPreferred;
|
||||
}
|
||||
|
||||
|
||||
inline status_t
|
||||
normalize_err(status_t err)
|
||||
{
|
||||
return err >= 0 ? B_OK : err;
|
||||
}
|
||||
|
||||
|
||||
template<class T>
|
||||
inline void
|
||||
byte_swap(T &/*data*/)
|
||||
{
|
||||
// Specialize for data types which actually swap
|
||||
}
|
||||
|
||||
|
||||
inline void
|
||||
write_helper(BDataIO *stream, const void *data, size_t size)
|
||||
{
|
||||
status_t error = stream->Write(data, size);
|
||||
if (error < B_OK)
|
||||
throw error;
|
||||
}
|
||||
|
||||
|
||||
class TReadHelper {
|
||||
public:
|
||||
TReadHelper(BDataIO *stream)
|
||||
: fStream(stream),
|
||||
fError(B_OK),
|
||||
fSwap(false)
|
||||
{
|
||||
}
|
||||
|
||||
TReadHelper(BDataIO *stream, bool swap)
|
||||
: fStream(stream),
|
||||
fError(B_OK),
|
||||
fSwap(swap)
|
||||
{
|
||||
}
|
||||
|
||||
template<class T>
|
||||
inline void operator()(T &data)
|
||||
{
|
||||
fError = fStream->Read((void *)&data, sizeof(T));
|
||||
if (fError > B_OK) {
|
||||
if (IsSwapping())
|
||||
byte_swap(data);
|
||||
return;
|
||||
}
|
||||
|
||||
if (fError == 0)
|
||||
throw B_ERROR;
|
||||
throw fError;
|
||||
}
|
||||
|
||||
template<class T>
|
||||
inline void operator()(T data, size_t len)
|
||||
{
|
||||
fError = fStream->Read((void *)data, len);
|
||||
if (fError > B_OK)
|
||||
return;
|
||||
|
||||
if (fError == 0)
|
||||
throw B_ERROR;
|
||||
throw fError;
|
||||
}
|
||||
|
||||
status_t Status() { return fError; };
|
||||
|
||||
void SetSwap(bool yesNo) { fSwap = yesNo; };
|
||||
bool IsSwapping() { return fSwap; };
|
||||
|
||||
private:
|
||||
BDataIO *fStream;
|
||||
status_t fError;
|
||||
bool fSwap;
|
||||
};
|
||||
|
||||
|
||||
class TChecksumHelper {
|
||||
public:
|
||||
TChecksumHelper(uchar* buffer)
|
||||
: fBuffer(buffer),
|
||||
fBufPtr(buffer)
|
||||
{
|
||||
}
|
||||
|
||||
template<class T>
|
||||
inline void Cache(const T &data)
|
||||
{
|
||||
*((T*)fBufPtr) = data;
|
||||
fBufPtr += sizeof (T);
|
||||
}
|
||||
|
||||
int32 CheckSum();
|
||||
|
||||
private:
|
||||
uchar *fBuffer;
|
||||
uchar *fBufPtr;
|
||||
};
|
||||
|
||||
|
||||
template<class T>
|
||||
inline status_t
|
||||
read_helper(BDataIO *stream, T &data)
|
||||
{
|
||||
return normalize_err(stream->Read((void *)&data, sizeof(T)));
|
||||
}
|
||||
|
||||
|
||||
template<>
|
||||
inline void
|
||||
byte_swap(double &data)
|
||||
{
|
||||
data = __swap_double(data);
|
||||
}
|
||||
|
||||
|
||||
template<>
|
||||
inline void
|
||||
byte_swap(float &data)
|
||||
{
|
||||
data = __swap_float(data);
|
||||
}
|
||||
|
||||
|
||||
template<>
|
||||
inline void
|
||||
byte_swap(int64 &data)
|
||||
{
|
||||
data = __swap_int64(data);
|
||||
}
|
||||
|
||||
|
||||
template<>
|
||||
inline void
|
||||
byte_swap(int32 &data)
|
||||
{
|
||||
data = __swap_int32(data);
|
||||
}
|
||||
|
||||
|
||||
template<>
|
||||
inline void
|
||||
byte_swap(int16 &data)
|
||||
{
|
||||
data = __swap_int16(data);
|
||||
}
|
||||
|
||||
|
||||
template<>
|
||||
inline void
|
||||
byte_swap(entry_ref &data)
|
||||
{
|
||||
byte_swap(data.device);
|
||||
byte_swap(data.directory);
|
||||
}
|
||||
|
||||
#endif // MESSAGEUTILS_H
|
||||
2042
src/kits/app/Message3.cpp
Normal file
2042
src/kits/app/Message3.cpp
Normal file
File diff suppressed because it is too large
Load Diff
616
src/kits/app/MessageBody3.cpp
Normal file
616
src/kits/app/MessageBody3.cpp
Normal file
@ -0,0 +1,616 @@
|
||||
/*
|
||||
* Copyright 2005, Haiku.
|
||||
* Distributed under the terms of the MIT License.
|
||||
*
|
||||
* Authors:
|
||||
* Michael Lotz <mmlr@mlotz.ch>
|
||||
*/
|
||||
|
||||
/* BMessageBody handles data storage and retrieval for BMessage. */
|
||||
|
||||
#include <stdio.h>
|
||||
#include <DataIO.h>
|
||||
#include <TypeConstants.h>
|
||||
#include "MessageBody3.h"
|
||||
#include "MessageUtils3.h"
|
||||
|
||||
namespace BPrivate {
|
||||
|
||||
BMessageBody::BMessageBody()
|
||||
{
|
||||
InitCommon();
|
||||
}
|
||||
|
||||
|
||||
BMessageBody::BMessageBody(const BMessageBody &other)
|
||||
{
|
||||
InitCommon();
|
||||
*this = other;
|
||||
}
|
||||
|
||||
|
||||
BMessageBody::~BMessageBody()
|
||||
{
|
||||
MakeEmpty();
|
||||
delete fFieldTable;
|
||||
}
|
||||
|
||||
|
||||
BMessageBody &
|
||||
BMessageBody::operator=(const BMessageBody &other)
|
||||
{
|
||||
if (this != &other) {
|
||||
MakeEmpty();
|
||||
// the flat buffer has no last entry flag included
|
||||
BMemoryIO memoryIO(other.FlatBuffer(), other.FlattenedSize() - 1);
|
||||
Unflatten(&memoryIO, other.FlattenedSize() - 1);
|
||||
}
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::InitCommon()
|
||||
{
|
||||
fFieldTableSize = 100;
|
||||
fFieldTable = new BMessageField *[fFieldTableSize];
|
||||
HashClear();
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::GetInfo(type_code typeRequested, int32 which, char **name,
|
||||
type_code *typeReturned, int32 *count) const
|
||||
{
|
||||
int32 index = 0;
|
||||
int32 fieldCount = fFieldList.CountItems();
|
||||
BMessageField *field = NULL;
|
||||
bool found = false;
|
||||
|
||||
for (int32 fieldIndex = 0; fieldIndex < fieldCount; fieldIndex++) {
|
||||
field = (BMessageField *)fFieldList.ItemAt(fieldIndex);
|
||||
|
||||
if (typeRequested == B_ANY_TYPE || field->Type() == typeRequested) {
|
||||
if (index == which) {
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
|
||||
index++;
|
||||
}
|
||||
}
|
||||
|
||||
// we couldn't find any appropriate data
|
||||
if (!found) {
|
||||
if (count)
|
||||
*count = 0;
|
||||
|
||||
if (index > 0)
|
||||
return B_BAD_INDEX;
|
||||
else
|
||||
return B_BAD_TYPE;
|
||||
}
|
||||
|
||||
// ToDo: BC Break
|
||||
// Change 'name' parameter to const char *
|
||||
if (name)
|
||||
*name = const_cast<char *>(field->Name());
|
||||
|
||||
if (typeReturned)
|
||||
*typeReturned = field->Type();
|
||||
|
||||
if (count)
|
||||
*count = field->CountItems();
|
||||
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::GetInfo(const char *name, type_code *typeFound,
|
||||
int32 *countFound) const
|
||||
{
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(name, B_ANY_TYPE, error);
|
||||
|
||||
if (field) {
|
||||
if (typeFound)
|
||||
*typeFound = field->Type();
|
||||
|
||||
if (countFound)
|
||||
*countFound = field->CountItems();
|
||||
} else {
|
||||
if (countFound)
|
||||
*countFound = 0;
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::GetInfo(const char *name, type_code *typeFound, bool *fixedSize) const
|
||||
{
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(name, B_ANY_TYPE, error);
|
||||
|
||||
if (field) {
|
||||
if (typeFound)
|
||||
*typeFound = field->Type();
|
||||
|
||||
if (fixedSize)
|
||||
*fixedSize = field->FixedSize();
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
int32
|
||||
BMessageBody::CountNames(type_code type) const
|
||||
{
|
||||
if (type == B_ANY_TYPE)
|
||||
return fFieldList.CountItems();
|
||||
|
||||
int32 count = 0;
|
||||
for (int32 index = 0; index < fFieldList.CountItems(); index++) {
|
||||
BMessageField *field = (BMessageField *)fFieldList.ItemAt(index);
|
||||
if (field->Type() == type)
|
||||
count++;
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
|
||||
bool
|
||||
BMessageBody::IsEmpty() const
|
||||
{
|
||||
return fFieldList.CountItems() == 0;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageBody::PrintToStream() const
|
||||
{
|
||||
for (int32 index = 0; index < fFieldList.CountItems(); index++) {
|
||||
BMessageField *field = (BMessageField *)fFieldList.ItemAt(index);
|
||||
field->PrintToStream();
|
||||
printf("\n");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::Rename(const char *oldName, const char *newName)
|
||||
{
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(oldName, B_ANY_TYPE, error);
|
||||
|
||||
if (!field)
|
||||
return error;
|
||||
|
||||
field->SetName(newName);
|
||||
HashInsert(HashRemove(oldName));
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
ssize_t
|
||||
BMessageBody::FlattenedSize() const
|
||||
{
|
||||
// one more for the last entry flag
|
||||
return fFlatBuffer.BufferLength() + 1;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::Flatten(BDataIO *stream) const
|
||||
{
|
||||
stream->Write(fFlatBuffer.Buffer(), fFlatBuffer.BufferLength());
|
||||
|
||||
uint8 lastField = MSG_LAST_ENTRY;
|
||||
status_t error = stream->Write(&lastField, sizeof(lastField));
|
||||
|
||||
if (error < B_OK)
|
||||
return error;
|
||||
if (error == 0)
|
||||
return B_ERROR;
|
||||
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::Unflatten(BDataIO *stream, int32 length)
|
||||
{
|
||||
if (length <= 0)
|
||||
return B_OK;
|
||||
|
||||
fFlatBuffer.SetSize(length);
|
||||
status_t error = stream->Read((void *)fFlatBuffer.Buffer(), length);
|
||||
|
||||
if (error < B_OK)
|
||||
return B_ERROR;
|
||||
|
||||
int32 offset = 0;
|
||||
uint8 *location = (uint8 *)fFlatBuffer.Buffer();
|
||||
while (offset < length && *location & MSG_FLAG_VALID) {
|
||||
BMessageField *field = new BMessageField(this);
|
||||
int32 fieldLength = field->Unflatten(offset);
|
||||
//PrintToStream();
|
||||
|
||||
if (fieldLength <= 0) {
|
||||
field->MakeEmpty();
|
||||
delete field;
|
||||
MakeEmpty();
|
||||
return B_ERROR;
|
||||
}
|
||||
|
||||
location += fieldLength;
|
||||
offset += fieldLength;
|
||||
|
||||
fFieldList.AddItem(field);
|
||||
HashInsert(field);
|
||||
}
|
||||
|
||||
// set the buffer to the actual size
|
||||
fFlatBuffer.SetSize(offset);
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::AddData(const char *name, type_code type, const void *item,
|
||||
ssize_t length, bool fixedSize)
|
||||
{
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = AddData(name, type, error);
|
||||
|
||||
if (!field)
|
||||
return error;
|
||||
|
||||
if (fixedSize) {
|
||||
error = field->SetFixedSize(length);
|
||||
if (error != B_OK)
|
||||
return error;
|
||||
}
|
||||
|
||||
field->AddItem(item, length);
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::AddData(const char *name, type_code type, void **buffer,
|
||||
ssize_t length)
|
||||
{
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = AddData(name, type, error);
|
||||
|
||||
if (!field)
|
||||
return error;
|
||||
|
||||
*buffer = field->AddItem(length);
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
BMessageField *
|
||||
BMessageBody::AddData(const char *name, type_code type, status_t &error)
|
||||
{
|
||||
if (type == B_ANY_TYPE) {
|
||||
error = B_BAD_VALUE;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
BMessageField *foundField = FindData(name, type, error);
|
||||
|
||||
if (error < B_OK) {
|
||||
if (error == B_NAME_NOT_FOUND) {
|
||||
// reset the error - we will create the field
|
||||
error = B_OK;
|
||||
} else {
|
||||
// looking for B_BAD_TYPE here in particular, which would indicate
|
||||
// that we tried to add data of type X when we already had data of
|
||||
// type Y with the same name
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
if (foundField)
|
||||
return foundField;
|
||||
|
||||
// add a new field if it's not yet present
|
||||
BMessageField *newField = new BMessageField(this,
|
||||
fFlatBuffer.BufferLength(), name, type);
|
||||
|
||||
fFieldList.AddItem(newField);
|
||||
HashInsert(newField);
|
||||
|
||||
return newField;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::ReplaceData(const char *name, type_code type, int32 index,
|
||||
const void *item, ssize_t length)
|
||||
{
|
||||
if (type == B_ANY_TYPE)
|
||||
return B_BAD_VALUE;
|
||||
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(name, type, error);
|
||||
|
||||
if (!field)
|
||||
return error;
|
||||
|
||||
if (field->FixedSize()) {
|
||||
ssize_t itemSize = 0;
|
||||
void *item = field->ItemAt(0, &itemSize);
|
||||
|
||||
if (item && itemSize != length)
|
||||
return B_BAD_VALUE;
|
||||
}
|
||||
|
||||
field->ReplaceItem(index, item, length);
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::ReplaceData(const char *name, type_code type, int32 index,
|
||||
void **buffer, ssize_t length)
|
||||
{
|
||||
if (type == B_ANY_TYPE)
|
||||
return B_BAD_VALUE;
|
||||
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(name, type, error);
|
||||
|
||||
if (!field)
|
||||
return error;
|
||||
|
||||
*buffer = field->ReplaceItem(index, length);
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::RemoveData(const char *name, int32 index)
|
||||
{
|
||||
if (index < 0)
|
||||
return B_BAD_VALUE;
|
||||
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(name, B_ANY_TYPE, error);
|
||||
|
||||
if (field) {
|
||||
if (index < field->CountItems()) {
|
||||
if (field->CountItems() == 1)
|
||||
RemoveName(name);
|
||||
else
|
||||
field->RemoveItem(index);
|
||||
} else
|
||||
error = B_BAD_INDEX;
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::RemoveName(const char *name)
|
||||
{
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(name, B_ANY_TYPE, error);
|
||||
|
||||
if (!field)
|
||||
return error;
|
||||
|
||||
fFieldList.RemoveItem(field);
|
||||
HashRemove(name);
|
||||
field->MakeEmpty();
|
||||
field->RemoveSelf();
|
||||
delete field;
|
||||
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::MakeEmpty()
|
||||
{
|
||||
for (int32 index = 0; index < fFieldList.CountItems(); index++) {
|
||||
BMessageField *field = (BMessageField *)fFieldList.ItemAt(index);
|
||||
field->MakeEmpty();
|
||||
delete field;
|
||||
}
|
||||
|
||||
fFieldList.MakeEmpty();
|
||||
fFlatBuffer.SetSize(0);
|
||||
HashClear();
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
bool
|
||||
BMessageBody::HasData(const char *name, type_code type, int32 index) const
|
||||
{
|
||||
if (!name || index < 0)
|
||||
return false;
|
||||
|
||||
status_t error = B_ERROR;
|
||||
BMessageField *field = FindData(name, type, error);
|
||||
|
||||
if (!field)
|
||||
return false;
|
||||
|
||||
if (index >= field->CountItems())
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageBody::FindData(const char *name, type_code type, int32 index,
|
||||
const void **data, ssize_t *numBytes) const
|
||||
{
|
||||
if (!data)
|
||||
return B_BAD_VALUE;
|
||||
|
||||
status_t error = B_ERROR;
|
||||
*data = NULL;
|
||||
|
||||
BMessageField *field = FindData(name, type, error);
|
||||
if (error >= B_OK) {
|
||||
if (index >= field->CountItems())
|
||||
return B_BAD_INDEX;
|
||||
|
||||
*data = field->ItemAt(index, numBytes);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
BMessageField *
|
||||
BMessageBody::FindData(const char *name, type_code type, status_t &error) const
|
||||
{
|
||||
if (!name) {
|
||||
error = B_BAD_VALUE;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
BMessageField *field = HashLookup(name);
|
||||
|
||||
if (field) {
|
||||
if (type != B_ANY_TYPE && field->Type() != type) {
|
||||
error = B_BAD_TYPE;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
error = B_OK;
|
||||
return field;
|
||||
}
|
||||
|
||||
error = B_NAME_NOT_FOUND;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
uint8 *
|
||||
BMessageBody::FlatInsert(int32 offset, ssize_t oldLength, ssize_t newLength)
|
||||
{
|
||||
if (oldLength == newLength)
|
||||
return FlatBuffer() + offset;
|
||||
|
||||
ssize_t change = newLength - oldLength;
|
||||
ssize_t bufferLength = fFlatBuffer.BufferLength();
|
||||
|
||||
if (change > 0) {
|
||||
fFlatBuffer.SetSize(bufferLength + change);
|
||||
|
||||
// usual case for adds
|
||||
if (offset == bufferLength)
|
||||
return FlatBuffer() + offset;
|
||||
}
|
||||
|
||||
ssize_t length = bufferLength - offset - oldLength;
|
||||
if (length > 0) {
|
||||
uint8 *location = FlatBuffer() + offset;
|
||||
memmove(location + newLength, location + oldLength, length);
|
||||
}
|
||||
|
||||
if (change < 0)
|
||||
fFlatBuffer.SetSize(bufferLength + change);
|
||||
|
||||
for (int32 index = fFieldList.CountItems() - 1; index >= 0; index--) {
|
||||
BMessageField *field = (BMessageField *)fFieldList.ItemAt(index);
|
||||
if (field->Offset() <= offset)
|
||||
break;
|
||||
|
||||
field->SetOffset(field->Offset() + change);
|
||||
}
|
||||
|
||||
return FlatBuffer() + offset;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageBody::HashInsert(BMessageField *field)
|
||||
{
|
||||
uint32 index = HashString(field->Name()) % fFieldTableSize;
|
||||
field->SetNext(fFieldTable[index]);
|
||||
fFieldTable[index] = field;
|
||||
}
|
||||
|
||||
|
||||
BMessageField *
|
||||
BMessageBody::HashLookup(const char *name) const
|
||||
{
|
||||
uint32 index = HashString(name) % fFieldTableSize;
|
||||
BMessageField *result = fFieldTable[index];
|
||||
|
||||
while (result) {
|
||||
if (strcmp(result->Name(), name) == 0)
|
||||
return result;
|
||||
|
||||
result = result->Next();
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
BMessageField *
|
||||
BMessageBody::HashRemove(const char *name)
|
||||
{
|
||||
uint32 index = HashString(name) % fFieldTableSize;
|
||||
BMessageField *result = fFieldTable[index];
|
||||
BMessageField *last = NULL;
|
||||
|
||||
while (result) {
|
||||
if (strcmp(result->Name(), name) == 0) {
|
||||
if (last)
|
||||
last->SetNext(result->Next());
|
||||
else
|
||||
fFieldTable[index] = result->Next();
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
last = result;
|
||||
result = result->Next();
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageBody::HashClear()
|
||||
{
|
||||
memset(fFieldTable, 0, fFieldTableSize * sizeof(BMessageField *));
|
||||
}
|
||||
|
||||
|
||||
uint32
|
||||
BMessageBody::HashString(const char *string) const
|
||||
{
|
||||
char ch;
|
||||
uint32 result = 0;
|
||||
|
||||
while ((ch = *string++) != 0) {
|
||||
result = (result << 7) ^ (result >> 24);
|
||||
result ^= ch;
|
||||
}
|
||||
|
||||
result ^= result << 12;
|
||||
return result;
|
||||
}
|
||||
|
||||
} // namespace BPrivate
|
||||
273
src/kits/app/MessageField3.cpp
Normal file
273
src/kits/app/MessageField3.cpp
Normal file
@ -0,0 +1,273 @@
|
||||
/*
|
||||
* Copyright 2005, Haiku.
|
||||
* Distributed under the terms of the MIT License.
|
||||
*
|
||||
* Authors:
|
||||
* Michael Lotz <mmlr@mlotz.ch>
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <DataIO.h>
|
||||
#include <MessageUtils.h>
|
||||
#include "MessageBody3.h"
|
||||
#include "MessageField3.h"
|
||||
|
||||
namespace BPrivate {
|
||||
|
||||
#define DATA_OFFSET (fOffset + sizeof(FieldHeader) + fHeader->nameLength)
|
||||
|
||||
inline int32
|
||||
round_to_8(int32 length)
|
||||
{
|
||||
// already includes the + 4 for size_t length field
|
||||
return (length + 11) & ~7;
|
||||
}
|
||||
|
||||
|
||||
BMessageField::BMessageField(BMessageBody *parent, int32 offset,
|
||||
const char *name, type_code type)
|
||||
: fParent(parent),
|
||||
fOffset(offset),
|
||||
fItemSize(0)
|
||||
{
|
||||
// insert space needed for the header
|
||||
fParent->FlatInsert(fOffset, 0, sizeof(FieldHeader));
|
||||
|
||||
// create and fill header
|
||||
fHeader = (FieldHeader *)(fParent->FlatBuffer() + fOffset);
|
||||
fHeader->type = type;
|
||||
fHeader->flags = MSG_FLAG_VALID;
|
||||
fHeader->count = 0;
|
||||
fHeader->dataSize = 0;
|
||||
fHeader->nameLength = 0;
|
||||
|
||||
SetName(name);
|
||||
}
|
||||
|
||||
|
||||
BMessageField::BMessageField(BMessageBody *parent)
|
||||
: fParent(parent),
|
||||
fOffset(0),
|
||||
fHeader(NULL),
|
||||
fItemSize(0)
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
BMessageField::~BMessageField()
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
int32
|
||||
BMessageField::Unflatten(int32 _offset)
|
||||
{
|
||||
fOffset = _offset;
|
||||
|
||||
// field is already present, just tap into it
|
||||
fHeader = (FieldHeader *)(fParent->FlatBuffer() + fOffset);
|
||||
|
||||
if (fHeader->flags & MSG_FLAG_FIXED_SIZE) {
|
||||
if (fHeader->count > 0)
|
||||
fItemSize = fHeader->dataSize / fHeader->count;
|
||||
return sizeof(FieldHeader) + fHeader->nameLength + fHeader->count * fItemSize;
|
||||
}
|
||||
|
||||
// create the item info list
|
||||
int32 offset = 0;
|
||||
uint8 *location = fParent->FlatBuffer() + DATA_OFFSET;
|
||||
for (int32 index = 0; index < fHeader->count; index++) {
|
||||
ItemInfo *info = new ItemInfo(offset);
|
||||
info->length = *(size_t *)location;
|
||||
info->paddedLength = round_to_8(info->length);
|
||||
fItemInfos.AddItem(info);
|
||||
|
||||
offset += info->paddedLength;
|
||||
location += info->paddedLength;
|
||||
}
|
||||
|
||||
return sizeof(FieldHeader) + fHeader->nameLength + offset;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::SetOffset(int32 offset)
|
||||
{
|
||||
fOffset = offset;
|
||||
fHeader = (FieldHeader *)(fParent->FlatBuffer() + fOffset);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::SetName(const char *newName)
|
||||
{
|
||||
int32 newLength = min_c(strlen(newName), 254) + 1;
|
||||
char *buffer = (char *)fParent->FlatInsert(fOffset + sizeof(FieldHeader), fHeader->nameLength, newLength);
|
||||
strcpy(buffer, newName);
|
||||
fHeader->nameLength = newLength;
|
||||
}
|
||||
|
||||
|
||||
const char *
|
||||
BMessageField::Name() const
|
||||
{
|
||||
return (const char *)(fParent->FlatBuffer() + fOffset + sizeof(FieldHeader));
|
||||
}
|
||||
|
||||
|
||||
status_t
|
||||
BMessageField::SetFixedSize(int32 itemSize)
|
||||
{
|
||||
if ((fItemSize > 0 && fItemSize != itemSize)
|
||||
|| fItemInfos.CountItems() > 0)
|
||||
return B_BAD_VALUE;
|
||||
|
||||
fItemSize = itemSize;
|
||||
fHeader->flags |= MSG_FLAG_FIXED_SIZE;
|
||||
return B_OK;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::AddItem(const void *item, ssize_t length)
|
||||
{
|
||||
memcpy(AddItem(length), item, length);
|
||||
}
|
||||
|
||||
|
||||
uint8 *
|
||||
BMessageField::AddItem(ssize_t length)
|
||||
{
|
||||
if (fHeader->flags & MSG_FLAG_FIXED_SIZE) {
|
||||
int32 offset = DATA_OFFSET + (fHeader->count * fItemSize);
|
||||
fHeader->dataSize += fItemSize;
|
||||
fHeader->count++;
|
||||
return fParent->FlatInsert(offset, 0, fItemSize);
|
||||
}
|
||||
|
||||
int32 newOffset = 0;
|
||||
if (fHeader->count > 0) {
|
||||
ItemInfo *info = (ItemInfo *)fItemInfos.ItemAt(fHeader->count - 1);
|
||||
newOffset = info->offset + info->paddedLength;
|
||||
}
|
||||
|
||||
ItemInfo *newInfo = new ItemInfo(newOffset, length);
|
||||
newInfo->paddedLength = round_to_8(length);
|
||||
|
||||
fItemInfos.AddItem(newInfo);
|
||||
fHeader->dataSize += newInfo->paddedLength;
|
||||
fHeader->count++;
|
||||
|
||||
uint8 *result = fParent->FlatInsert(DATA_OFFSET + newInfo->offset, 0, newInfo->paddedLength);
|
||||
*(int32 *)result = length;
|
||||
return result + sizeof(int32);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::ReplaceItem(int32 index, const void *newItem, ssize_t length)
|
||||
{
|
||||
memcpy(ReplaceItem(index, length), newItem, length);
|
||||
}
|
||||
|
||||
|
||||
uint8 *
|
||||
BMessageField::ReplaceItem(int32 index, ssize_t length)
|
||||
{
|
||||
if (fHeader->flags & MSG_FLAG_FIXED_SIZE)
|
||||
return fParent->FlatBuffer() + DATA_OFFSET + (index * fItemSize);
|
||||
|
||||
ItemInfo *info = (ItemInfo *)fItemInfos.ItemAt(index);
|
||||
int32 newLength = round_to_8(length);
|
||||
|
||||
if (info->paddedLength == newLength) {
|
||||
uint8 *result = fParent->FlatBuffer() + DATA_OFFSET + info->offset;
|
||||
info->length = length;
|
||||
*(int32 *)result = length;
|
||||
return result + sizeof(int32);
|
||||
}
|
||||
|
||||
int32 change = newLength - info->paddedLength;
|
||||
for (int32 i = index + 1; i < fHeader->count; i++)
|
||||
((ItemInfo *)fItemInfos.ItemAt(i))->offset += change;
|
||||
fHeader->dataSize += change;
|
||||
|
||||
int32 oldLength = info->paddedLength;
|
||||
info->length = length;
|
||||
info->paddedLength = newLength;
|
||||
|
||||
uint8 *result = fParent->FlatInsert(DATA_OFFSET + info->offset, oldLength, newLength);
|
||||
*(int32 *)result = length;
|
||||
return result + sizeof(int32);
|
||||
}
|
||||
|
||||
|
||||
void *
|
||||
BMessageField::ItemAt(int32 index, ssize_t *size)
|
||||
{
|
||||
if (fHeader->flags & MSG_FLAG_FIXED_SIZE) {
|
||||
if (size)
|
||||
*size = fItemSize;
|
||||
|
||||
return fParent->FlatBuffer() + DATA_OFFSET + (index * fItemSize);
|
||||
}
|
||||
|
||||
ItemInfo *info = (ItemInfo *)fItemInfos.ItemAt(index);
|
||||
|
||||
if (size)
|
||||
*size = info->length;
|
||||
|
||||
return fParent->FlatBuffer() + DATA_OFFSET + info->offset + sizeof(int32);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::RemoveItem(int32 index)
|
||||
{
|
||||
if (fHeader->flags & MSG_FLAG_FIXED_SIZE) {
|
||||
fParent->FlatInsert(DATA_OFFSET + (index * fItemSize), fItemSize, 0);
|
||||
fHeader->dataSize -= fItemSize;
|
||||
fHeader->count--;
|
||||
return;
|
||||
}
|
||||
|
||||
ItemInfo *info = (ItemInfo *)fItemInfos.RemoveItem(index);
|
||||
|
||||
for (int32 i = index; i < fHeader->count; i++)
|
||||
((ItemInfo *)fItemInfos.ItemAt(i))->offset -= info->paddedLength;
|
||||
|
||||
fParent->FlatInsert(DATA_OFFSET + info->offset, info->paddedLength, 0);
|
||||
fHeader->dataSize -= info->paddedLength;
|
||||
fHeader->count--;
|
||||
delete info;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::PrintToStream() const
|
||||
{
|
||||
printf("\tname: \"%s\"; items: %ld; dataSize: %ld; flags: %02x;", Name(), fHeader->count, fHeader->dataSize, fHeader->flags);
|
||||
// ToDo: implement for real
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::MakeEmpty()
|
||||
{
|
||||
for (int32 index = 0; index < fItemInfos.CountItems(); index++)
|
||||
delete (ItemInfo *)fItemInfos.ItemAt(index);
|
||||
|
||||
fItemInfos.MakeEmpty();
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
BMessageField::RemoveSelf()
|
||||
{
|
||||
// remove ourselfs from the flat buffer
|
||||
fParent->FlatInsert(fOffset, sizeof(FieldHeader) + fHeader->nameLength + fHeader->dataSize, 0);
|
||||
fOffset = 0;
|
||||
fHeader = NULL;
|
||||
}
|
||||
|
||||
} // namespace BPrivate
|
||||
Loading…
x
Reference in New Issue
Block a user