Changeset 6 for ProtocolBuffers


Ignore:
Timestamp:
Oct 9, 2009, 1:44:09 PM (15 years ago)
Author:
george
Message:
  • Přidáno: Generování hlavičky položek se značkou Tag a Wire typem.
Location:
ProtocolBuffers
Files:
1 added
7 edited

Legend:

Unmodified
Added
Removed

  • ProtocolBuffers/Demo.lpi

    r5 r6  
    3333      </Item1>
    3434    </RequiredPackages>
    35     <Units Count="3">
     35    <Units Count="4">
    3636      <Unit0>
    3737        <Filename Value="Demo.lpr"/>
    3838        <IsPartOfProject Value="True"/>
    3939        <UnitName Value="Demo"/>
    40         <CursorPos X="49" Y="10"/>
     40        <CursorPos X="66" Y="10"/>
    4141        <TopLine Value="1"/>
    42         <EditorIndex Value="2"/>
     42        <EditorIndex Value="3"/>
    4343        <UsageCount Value="20"/>
    4444        <Loaded Value="True"/>
    … …  
    5050        <ResourceBaseClass Value="Form"/>
    5151        <UnitName Value="UMainForm"/>
    52         <CursorPos X="12" Y="11"/>
    53         <TopLine Value="1"/>
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     53        <TopLine Value="30"/>
    5454        <EditorIndex Value="0"/>
    5555        <UsageCount Value="20"/>
    … …  
    6060        <IsPartOfProject Value="True"/>
    6161        <UnitName Value="UProtocolBuffers"/>
    62         <CursorPos X="5" Y="10"/>
    63         <TopLine Value="1"/>
     62        <CursorPos X="48" Y="102"/>
     63        <TopLine Value="85"/>
    6464        <EditorIndex Value="1"/>
    6565        <UsageCount Value="20"/>
    6666        <Loaded Value="True"/>
    6767      </Unit2>
     68      <Unit3>
     69        <Filename Value="UMemoryStreamEx.pas"/>
     70        <IsPartOfProject Value="True"/>
     71        <UnitName Value="UMemoryStreamEx"/>
     72        <CursorPos X="5" Y="18"/>
     73        <TopLine Value="2"/>
     74        <EditorIndex Value="2"/>
     75        <UsageCount Value="20"/>
     76        <Loaded Value="True"/>
     77      </Unit3>
    6878    </Units>
    69     <JumpHistory Count="1" HistoryIndex="0">
     79    <JumpHistory Count="30" HistoryIndex="29">
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    74200    </JumpHistory>
    75201  </ProjectOptions>

  • ProtocolBuffers/Demo.lpr

    r5 r6  
    88  {$ENDIF}{$ENDIF}
    99  Interfaces, // this includes the LCL widgetset
    10   Forms, UMainForm, LResources, UProtocolBuffers
     10  Forms, UMainForm, LResources, UProtocolBuffers, UMemoryStreamEx
    1111  { you can add units after this };
    1212

  • ProtocolBuffers/UMainForm.lfm

    r5 r6  
    11object MainForm: TMainForm
    2   Left = 288
    3   Height = 300
    4   Top = 154
    5   Width = 400
     2  Left = 281
     3  Height = 319
     4  Top = 189
     5  Width = 448
    66  Caption = 'Demo ProtocolBuffers'
     7  ClientHeight = 319
     8  ClientWidth = 448
     9  OnCreate = FormCreate
     10  OnDestroy = FormDestroy
    711  LCLVersion = '0.9.29'
     12  object Memo1: TMemo
     13    Left = 9
     14    Height = 272
     15    Top = 9
     16    Width = 433
     17    TabOrder = 0
     18  end
    819end

  • ProtocolBuffers/UMainForm.lrs

    r5 r6  
    1 { Toto je automaticky generovaný zdrojový soubor lazarusu }
    2 
    3 
    41LazarusResources.Add('TMainForm','FORMDATA',[
    5   'TPF0'#9'TMainForm'#8'MainForm'#4'Left'#3' '#1#6'Height'#3','#1#3'Top'#3#154#0
    6   +#5'Width'#3#144#1#7'Caption'#6#20'Demo ProtocolBuffers'#10'LCLVersion'#6#6'0'
    7   +'.9.29'#0#0
     2  'TPF0'#9'TMainForm'#8'MainForm'#4'Left'#3#25#1#6'Height'#3'?'#1#3'Top'#3#189#0
     3  +#5'Width'#3#192#1#7'Caption'#6#20'Demo ProtocolBuffers'#12'ClientHeight'#3'?'
     4  +#1#11'ClientWidth'#3#192#1#8'OnCreate'#7#10'FormCreate'#9'OnDestroy'#7#11'Fo'
     5  +'rmDestroy'#10'LCLVersion'#6#6'0.9.29'#0#5'TMemo'#5'Memo1'#4'Left'#2#9#6'Hei'
     6  +'ght'#3#16#1#3'Top'#2#9#5'Width'#3#177#1#8'TabOrder'#2#0#0#0#0
    87]);

  • ProtocolBuffers/UMainForm.pas

    r5 r6  
    11unit UMainForm;
    22
    3 {$mode objfpc}{$H+}
     3{$mode delphi}{$H+}
    44
    55interface
    66
    77uses
    8   Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs;
     8  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
     9  StdCtrls, UProtocolBuffers, UMemoryStreamEx;
    910
    1011type
     12  { TMainForm }
    1113  TMainForm = class(TForm)
     14    Memo1: TMemo;
     15    procedure FormCreate(Sender: TObject);
     16    procedure FormDestroy(Sender: TObject);
    1217  private
    1318    { private declarations }
    1419  public
    15     { public declarations }
     20    PB: TProtocolBuffer;
    1621  end;
    1722
    … …  
    2126implementation
    2227
     28{ TMainForm }
     29
     30procedure TMainForm.FormCreate(Sender: TObject);
     31var
     32  Stream: TMemoryStreamEx;
     33  Text: string;
     34  I: Integer;
     35begin
     36  Stream := TMemoryStreamEx.Create;
     37  PB := TProtocolBuffer.Create;
     38  with PB do begin
     39    BaseMessage := TPBMessage.Create;
     40    BaseMessage.Name := 'SampleMessage';
     41    BaseMessage.Tag := $aaaa;
     42    SaveToStream(Stream);
     43  end;
     44
     45  Stream.Position := 0;
     46  Text := '';
     47  for I := 1 to Stream.Size do begin
     48    Text := Text + IntToHex(Stream.ReadByte, 2) + ' ';
     49  end;
     50  Memo1.Lines.Text := Text;
     51  Stream.Free;
     52end;
     53
     54procedure TMainForm.FormDestroy(Sender: TObject);
     55begin
     56  PB.Free;
     57end;
     58
    2359initialization
    2460  {$I UMainForm.lrs}

  • ProtocolBuffers/UProtocolBuffers.pas

    r5 r6  
     1// http://code.google.com/intl/cs/apis/protocolbuffers/docs/overview.html
    12unit UProtocolBuffers;
    23
    3 {$mode delphi}{$H+}
     4{$mode delphi}
    45
    56interface
    67
    78uses
    8   Classes, SysUtils; 
     9  Classes, SysUtils;
    910
    1011type
    11   TPBItemType = (itRequired, itOptional, itRepeated);
     12  TPBItemMode = (imRequired, imOptional, imRepeated);
     13  TPBItemType = (itVariant, it64bit, itLengthDelimited, itStartGroup,
     14    itEndGroup, it32bit);
    1215
    1316  TPBEnumeration = class
    1417  end;
     18
     19  { TPBItem }
    1520
    1621  TPBItem = class
    … …  
    1823    Tag: Integer;
    1924    ItemType: TPBItemType;
     25    ItemMode: TPBItemMode;
     26    procedure SaveToStream(Stream: TStream); virtual;
    2027  end;
    2128
    … …  
    3643  end;
    3744
     45  { TPBMessage }
     46
    3847  TPBMessage = class(TPBItem)
    3948    Items: TList; // TList<TPBItem>;
     49    procedure SaveToStream(Stream: TStream); override;
     50    constructor Create;
    4051  end;
    4152
     53  { TProtocolBuffer }
     54
    4255  TProtocolBuffer = class
     56    BaseMessage: TPBMessage;
    4357    procedure LoadFromStream(Stream: TStream);
    4458    procedure SaveToStream(Stream: TStream);
    45     PMMessage: TPBMessage;
     59    destructor Destroy; override;
    4660  end;
    4761
    4862implementation
     63
     64uses
     65  UMemoryStreamEx;
    4966
    5067{ TProtocolBuffer }
    … …  
    5774procedure TProtocolBuffer.SaveToStream(Stream: TStream);
    5875begin
     76  BaseMessage.SaveToStream(Stream);
     77end;
    5978
     79destructor TProtocolBuffer.Destroy;
     80begin
     81  if Assigned(BaseMessage) then BaseMessage.Free;
     82  inherited Destroy;
     83end;
     84
     85{ TPBMessage }
     86
     87procedure TPBMessage.SaveToStream(Stream: TStream);
     88begin
     89  inherited SaveToStream(Stream);
     90end;
     91
     92constructor TPBMessage.Create;
     93begin
     94  ItemType := itLengthDelimited;
     95end;
     96
     97{ TPBItem }
     98
     99procedure TPBItem.SaveToStream(Stream: TStream);
     100var
     101  ByteIndex: Byte;
     102  Data: Byte;
     103begin
     104  with TMemoryStreamEx(Stream) do begin
     105    Data := ((Tag and $f) shl 3) or (Integer(ItemType) and $7);
     106    ByteIndex := 0;
     107    while Tag > (1 shl (ByteIndex * 8 + 4)) do begin
     108      WriteByte(Data or $80);
     109      Data := (Tag shr (ByteIndex * 8 + 4)) and $7f;
     110      Inc(ByteIndex);
     111    end;
     112    WriteByte(Data);
     113  end
    60114end;
    61115
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