Проектирование и разработка сетевых броузеров на основе теоретико-графовых моделей

FileList.ViewStyle := vsList;

end;

procedure TMyFtp.ViewDetailsItemClick(Sender: TObject);

begin

FileList.ViewStyle := vsReport;

end;

procedure TMyFtp.ViewRefreshItemClick(Sender: TObject);

begin

DirTreeChange(nil, DirTree.Selected);

end;

procedure TMyFtp.CopyItemClick(Sender: TObject);

begin

SaveDialog1.FileName := FileList.Selected.Caption;

if SaveDialog1.Execute then

FTP.GetFile(NodePath(DirTree.Selected) + '/' +

FileList.Selected.Caption,

SaveDialog1.FileName);

end;

procedure TMyFtp.ToolsDisconnectItemClick(Sender: TObject);

begin

DisConnect;

end;

procedure TMyFtp.FileNewItemClick(Sender: TObject);

var

DirName: String;

begin

if InputQuery('Input Box', 'Prompt', DirName) then

FTP.CreateDir(NodePath(DirTree.Selected) + '/' + DirName);

end;

procedure TMyFtp.DeleteItemClick(Sender: TObject);

begin

if ActiveControl = DirTree then

FTP.DeleteDir(NodePath(DirTree.Selected));

if ActiveControl = FileList then

FTP.DeleteFile(NodePath(DirTree.Selected) + '/' +

FileList.Selected.Caption);

end;

procedure TMyFtp.PasteFromItemClick(Sender: TObject);

begin

if OpenDialog1.Execute then

FTP.PutFile(OpenDialog1.FileName, NodePath(DirTree.Selected));

end;

procedure TMyFtp.FilePopupPopup(Sender: TObject);

begin

CopyItem.Enabled := (ActiveControl = FileList) and (FileList.Selected

<> nil);

PasteFromItem.Enabled := (ActiveControl = DirTree) and

(DirTree.Selected <> nil);

DeleteItem.Enabled := (ActiveControl = FileList) and

(FileList.Selected <> nil);

RenameItem.Enabled := (ActiveControl = FileList) and

(FileList.Selected <> nil);

end;

procedure TMyFtp.FileMenuClick(Sender: TObject);

begin

FileCopyItem.Enabled := (ActiveControl = FileList) and

(FileList.Selected <> nil);

FileDeleteItem.Enabled := (ActiveControl = FileList) and

(FileList.Selected <> nil);

FileRenameItem.Enabled := (ActiveControl = FileList) and

(FileList.Selected <> nil);

end;

procedure TMyFtp.FileDeleteItemClick(Sender: TObject);

begin

if (DirTree.Selected <> nil) and (FileList.Selected <> nil) then

FTP.DeleteFile(FileList.Selected.Caption);

end;

procedure TMyFtp.FTPListItem(Sender: TObject; const Item: FTPDirItem);

var

Node: TTreeNode;

begin

CreateItem(Item.FileName, Item.Attributes, Item.Size, Item.Date);

if Item.Attributes = 1 then

if DirTree.Selected <> nil then

begin

if DirTree.Selected <> nil then

Node := DirTree.Selected.GetFirstChild

else

Node := nil;

while Node <> nil do

if AnsiCompareFileName(Node.Text, Item.FileName) = 0 then

exit

else

Node := DirTree.Selected.GetNextChild(Node);

if Node = nil then

begin

Node := DirTree.Items.AddChild(DirTree.Selected,

Item.FileName);

Node.ImageIndex := Folder;

Node.SelectedIndex := OpenFolder;

end;

end

else

DirTree.Items.AddChild(Root, Item.FileName);

end;

end.

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юЁьsхmу0хттыьшфайл nntp.pas

unit nntp;

interface

uses

Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms,

Dialogs,

Menus, OleCtrls, StdCtrls, ComCtrls, ExtCtrls, Buttons, ActiveX, isp3;

const

efListGroups = 0;

efGetArticleHeaders = 1;

efGetArticleNumbers = 2;

efGetArticle = 3;

type

TNewsForm = class(TForm)

NNTP1: TNNTP;

MainMenu1: TMainMenu;

File1: TMenuItem;

Exit1: TMenuItem;

N1: TMenuItem;

FileDisconnectItem: TMenuItem;

FileConnectItem: TMenuItem;

Panel1: TPanel;

Bevel1: TBevel;

StatusBar: TStatusBar;

SmallImages: TImageList;

Panel2: TPanel;

NewsGroups: TTreeView;

Bevel2: TBevel;

Panel3: TPanel;

Memo1: TMemo;

Panel5: TPanel;

Panel4: TPanel;

ConnectBtn: TSpeedButton;

RefreshBtn: TSpeedButton;

Bevel3: TBevel;

MsgHeaders: TListBox;

Label1: TLabel;

Label2: TLabel;

procedure FileConnectItemClick(Sender: TObject);

procedure NNTP1ProtocolStateChanged(Sender: TObject;

ProtocolState: Smallint);

procedure NNTP1StateChanged(Sender: TObject; State: Smallint);

procedure Exit1Click(Sender: TObject);

procedure MsgHeadersDblClick(Sender: TObject);

procedure FormClose(Sender: TObject; var Action: TCloseAction);

procedure NewsGroupsChange(Sender: TObject; Node: TTreeNode);

procedure RefreshBtnClick(Sender: TObject);

procedure FileDisconnectItemClick(Sender: TObject);

procedure NNTP1Banner(Sender: TObject; const Banner: WideString);

procedure NNTP1DocOutput(Sender: TObject; const DocOutput:

DocOutput);

procedure NNTP1Error(Sender: TObject; Number: Smallint;

var Description: WideString; Scode: Integer; const Source,

HelpFile: WideString; HelpContext: Integer;

var CancelDisplay: WordBool);

procedure NNTP1SelectGroup(Sender: TObject;

const groupName: WideString; firstMessage, lastMessage,

msgCount: Integer);

private

EventFlag: Integer;

function NodePath(Node: TTreeNode): String;

public

Data: String;

end;

var

NewsForm: TNewsForm;

Remainder: String;

Nodes: TStringList;

CurrentGroup: String;

GroupCount: Integer;

implementation

uses Connect;

{$R *.DFM}

{ TParser }

type

TToken = (etEnd, etSymbol, etName, etLiteral);

TParser = class

private

FFlags: Integer;

FText: string;

FSourcePtr: PChar;

FSourceLine: Integer;

FTokenPtr: PChar;

FTokenString: string;

FToken: TToken;

procedure SkipBlanks;

procedure NextToken;

public

constructor Create(const Text: string; Groups: Boolean);

end;

const

sfAllowSpaces = 1;

constructor TParser.Create(const Text: string; Groups: Boolean);

begin

FText := Text;

FSourceLine := 1;

FSourcePtr := PChar(Text);

if Groups then

FFlags := sfAllowSpaces

else

FFlags := 0;

NextToken;

end;

procedure TParser.SkipBlanks;

begin

while True do

begin

case FSourcePtr^ of

#0:

begin

if FSourcePtr^ = #0 then Exit;

Continue;

end;

#10:

Inc(FSourceLine);

#33..#255:

Exit;

end;

Inc(FSourcePtr);

end;

end;

procedure TParser.NextToken;

var

P, TokenStart: PChar;

begin

SkipBlanks;

FTokenString := '';

P := FSourcePtr;

while (P^ <> #0) and (P^ etEnd do

begin

if Parser.FSourceLine <> OldSrcLine then

begin

AddItem(Parser.FTokenString);

OldSrcLine := Parser.FSourceLine;

end;

Parser.NextToken;

end;

end;

procedure ParseHeaders(Data: String);

var

Parser: TParser;

MsgNo: LongInt;

Header: String;

OldSrcLine: Integer;

begin

Parser := TParser.Create(Data, False);

while Parser.FToken <> etEnd do

begin

MsgNo := StrToInt(Parser.FTokenString);

OldSrcLine := Parser.FSourceLine;

Parser.NextToken;

Header := '';

while (OldSrcLine = Parser.FSourceLine) do

begin

Header := Header + ' ' + Parser.FTokenString;

Parser.NextToken;

if Parser.FToken = etEnd then

Break;

end;

NewsForm.MsgHeaders.Items.AddObject(Header, Pointer(MsgNo));

end;

end;

procedure DestroyList(AList: TStringList);

var

i: Integer;

begin

for i := 0 to AList.Count - 1 do

if AList.Objects[i] <> nil then

DestroyList(TStringList(AList.Objects[i]));

AList.Free;

end;

procedure BuildTree(Parent: TTreeNode; List: TStrings);

var

i: Integer;

Node: TTreeNode;

begin

for i := 0 to List.Count - 1 do

if List.Objects[i] <> nil then

begin

Node := NewsForm.NewsGroups.Items.AddChild(Parent, List[i]);

Node.ImageIndex := 0;

Node.SelectedIndex := 1;

BuildTree(Node, TStrings(List.Objects[i]));

end

else

NewsForm.NewsGroups.Items.AddChild(Parent, List[i]);

end;

function TNewsForm.NodePath(Node: TTreeNode): String;

begin

if Node.Parent = nil then

Result := Node.Text

else

Result := NodePath(Node.Parent) + '.' + Node.Text;

end;

procedure TNewsForm.FileConnectItemClick(Sender: TObject);

begin

ConnectDlg := TConnectDlg.Create(Self);

try

if ConnectDlg.ShowModal = mrOk then

with NNTP1 do

Connect(ConnectDlg.ServerEdit.Text, RemotePort);

finally

ConnectDlg.Free;

end;

end;

procedure TNewsForm.NNTP1ProtocolStateChanged(Sender: TObject;

ProtocolState: Smallint);

begin

case ProtocolState of

nntpBase: ;

nntpTransaction:

begin

EventFlag := efListGroups;

Nodes := TStringList.Create;

Nodes.Sorted := True;

NNTP1.ListGroups;

end;

end;

end;

procedure TNewsForm.NNTP1StateChanged(Sender: TObject; State: Smallint);

begin

with Memo1.Lines do

case NNTP1.State of

prcConnecting : Add('Connecting');

prcResolvingHost: Add('Resolving Host: ' + NNTP1.RemoteHost);

prcHostResolved : Add('Host resolved');

prcConnected :

begin

Add('Connected to: ' + NNTP1.RemoteHost);

Statusbar.Panels[0].Text := 'Connected to: ' +

NNTP1.RemoteHost;

ConnectBtn.Enabled := False;

FileConnectItem.Enabled := False;

RefreshBtn.Enabled := True;

end;

prcDisconnecting: Text := NNTP1.ReplyString;

prcDisconnected :

begin

Statusbar.Panels[0].Text := 'Disconnected';

Caption := 'News Reader';

Label1.Caption := '';

ConnectBtn.Enabled := True;

FileConnectItem.Enabled := True;

RefreshBtn.Enabled := False;

end;

end;

end;

procedure TNewsForm.Exit1Click(Sender: TObject);

begin

if NNTP1.State <> prcDisconnected then

begin

if NNTP1.Busy then NNTP1.Cancel;

NNTP1.Quit;

while NNTP1.State <> prcDisconnected do

Application.ProcessMessages;

end;

Close;

end;

procedure TNewsForm.MsgHeadersDblClick(Sender: TObject);

var

Article: Integer;

begin

if NNTP1.Busy then exit;

EventFlag := efGetArticle;

Memo1.Clear;

if MsgHeaders.ItemIndex = -1 then exit;

Caption := 'News Reader: ' + MsgHeaders.Items[MsgHeaders.ItemIndex];

Article := Integer(MsgHeaders.Items.Objects[MsgHeaders.ItemIndex]);

NNTP1.GetArticlebyArticleNumber(Article);

end;

procedure TNewsForm.FormClose(Sender: TObject; var Action:

TCloseAction);

begin

if NNTP1.State <> prcDisconnected then

begin

if NNTP1.Busy then NNTP1.Cancel;

NNTP1.Quit;

while NNTP1.State <> prcDisconnected do

Application.ProcessMessages;

end;

end;

procedure TNewsForm.NewsGroupsChange(Sender: TObject; Node: TTreeNode);

var

NP: String;

begin

if (NNTP1.State = prcConnected) and not NNTP1.Busy then

with MsgHeaders do

begin

Items.BeginUpdate;

try

Items.Clear;

Memo1.Lines.Clear;

NP := NodePath(NewsGroups.Selected);

Statusbar.Panels[2].Text := 'Bytes: 0';

Statusbar.Panels[1].Text := '0 Article(s)';

if NNTP1.Busy then

NNTP1.Cancel;

NNTP1.SelectGroup(NP);

Label1.Caption := 'Contents of ''' + NP + '''';

finally

Items.EndUpdate;

end;

end;

end;

procedure TNewsForm.RefreshBtnClick(Sender: TObject);

begin

if NewsGroups.Selected <> nil then

NewsGroupsChange(nil, NewsGroups.Selected);

end;

procedure TNewsForm.FileDisconnectItemClick(Sender: TObject);

begin

if NNTP1.Busy then NNTP1.Cancel;

NNTP1.Quit;

while NNTP1.Busy do

Application.ProcessMessages;

with NewsGroups.Items do

begin

BeginUpdate;

Clear;

EndUpdate;

end;

MsgHeaders.Items.Clear;

Memo1.Lines.Clear;

end;

procedure TNewsForm.NNTP1Banner(Sender: TObject; const Banner:

WideString);

begin

Memo1.Lines.Add(Banner);

end;

procedure TNewsForm.NNTP1DocOutput(Sender: TObject;

const DocOutput: DocOutput);

begin

Statusbar.Panels[2].Text := Format('Bytes:

%d',[DocOutput.BytesTransferred]);

case DocOutput.State of

icDocBegin:

begin

if EventFlag = efListGroups then

Memo1.Lines.Add('Retrieving news groups...');

Data := '';

GroupCount := 0;

end;

icDocData:

begin

Data := Data + DocOutput.DataString;

if EventFlag = efGetArticle then

Memo1.Lines.Add(Data);

end;

icDocEnd:

begin

case EventFlag of

efListGroups:

begin

ParseGroups(Data);

Memo1.Lines.Add('Done.'#13#10'Building news group

tree...');

NewsGroups.Items.BeginUpdate;

try

BuildTree(nil, Nodes);

DestroyList(Nodes);

Statusbar.Panels[1].Text := Format('%d

Groups',[GroupCount]);

finally

NewsGroups.Items.EndUpdate;

Memo1.Lines.Add('Done.');

end;

end;

efGetArticleHeaders: ParseHeaders(Data);

efGetArticle:

begin

Memo1.SelStart := 0;

SendMessage(Memo1.Handle, EM_ScrollCaret, 0, 0);

end;

end;

SetLength(Data, 0);

end;

end;

Refresh;

end;

procedure TNewsForm.NNTP1Error(Sender: TObject; Number: Smallint;

var Description: WideString; Scode: Integer; const Source,

HelpFile: WideString; HelpContext: Integer; var CancelDisplay:

WordBool);

begin

// MessageDlg(Description, mtError, [mbOk], 0);

end;

procedure TNewsForm.NNTP1SelectGroup(Sender: TObject;

const groupName: WideString; firstMessage, lastMessage,

msgCount: Integer);

begin

EventFlag := efGetArticleHeaders;

Statusbar.Panels[1].Text := Format('%d Article(s)',[msgCount]);

NNTP1.GetArticleHeaders('subject', FirstMessage, lastMessage);

end;

end.

файл smtp.pas

unit Smtp;

interface

uses Windows, SysUtils, Classes, Graphics, Forms, Controls, Menus,

StdCtrls, Dialogs, Buttons, Messages, ExtCtrls, ComCtrls, OleCtrls,

ISP3;

type

TMail = class(TForm)

OpenDialog: TOpenDialog;

SMTP1: TSMTP;

POP1: TPOP;

PageControl1: TPageControl;

SendPage: TTabSheet;

RecvPage: TTabSheet;

ConPage: TTabSheet;

Panel1: TPanel;

Label1: TLabel;

Label3: TLabel;

Label2: TLabel;

eTo: TEdit;

eCC: TEdit;

eSubject: TEdit;

SendBtn: TButton;

ClearBtn: TButton;

reMessageText: TRichEdit;

SMTPStatus: TStatusBar;

Panel3: TPanel;

mReadMessage: TMemo;

POPStatus: TStatusBar;

cbSendFile: TCheckBox;

GroupBox1: TGroupBox;

ePOPServer: TEdit;

Label6: TLabel;

Label5: TLabel;

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