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uZipView.pas
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uZipView.pas
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unit uZipView;
interface
uses
System.SysUtils, System.Classes, System.Zip, System.IOUtils,
System.Generics.Collections,
FMX.TreeView, FMX.Types, FMX.Controls, FMX.Objects,
uMemoFrame;
function ExtractFile(const AZipFile : string; AFileIndex : integer;
var AExtractFile : string) : Boolean;
procedure ShowZipFile(const AFileName: string; const AMemoFrame: TMemoFrame);
procedure OnAplyStyleLookup(Sender: TObject);
procedure ShowTree(AParent : TFmxObject; AZipFile : TZipFile);
procedure BindTree(const ATree : TTreeView; AFileName : string);
implementation
uses uMain, uFileTypeHelper, uConsts, uTreeeUtils;
procedure OnAplyStyleLookup(Sender: TObject);
var
LItem: TTreeViewItem;
Obj: TFMXObject;
txt: TText;
begin
if Sender is TTReeViewitem then
begin
LItem := TTReeViewItem(Sender);
Obj := LItem.FindStyleResource('text');
if Obj <> nil then
begin
txt := TText(Obj);
txt.Font.Family := 'Lucida Console';
end;
end;
end;
procedure ShowZipFile(const AFileName: string; const AMemoFrame: TMemoFrame);
var
ZipFile: TZipFile;
ZipHeader: TZipHeader;
LItem: TTreeViewItem;
LChildItem: TTreeViewItem;
I, n: integer;
begin
if not TFile.Exists(AFileName) then
raise Exception.Create('File does not exists: ' + sLineBreak + AFileName);
n := 0;
if AMemoFrame.TMSFMXMemo1.Lines.Count > 0 then
n := 1
else
n := AMemoFrame.TMSFMXMemo1.Lines.Text.Length;
if (not AMemoFrame.FMemoChanged) and (n = 0) then
begin
if AMemoFrame.FPredFileName.Contains(CDefFileName) then
WorkFilesTree.DeleteFromWorkList(AMemoFrame.FPredFileName, AMemoFrame.Tag);
end else
WorkFilesTree.MoveToMemoStream(AMemoFrame);
AMemoFrame.TMSFMXMemo1.Visible := False;
AMemoFrame.TMSFMXMemo1.Lines.Text := string.Empty;
AMemoFrame.pnlMemoFind.Visible := False;
AMemoFrame.ImageViewer1.Visible := False;
AMemoFrame.treeZipView.Visible := True;
frmMain.ShowFileName(AFileName);
AMemoFRame.FPredFileName := AFileName;
frmMain.AddToHistoryList(AFileName);
WorkFilesTree.AddToWorkList(AFileName, ftArchive, AMemoFrame.Tag);
ZipFile := TZipFile.Create;
if not ZipFile.IsValid(AFileName) then
exit;
AMemoFrame.treeZipView.BeginUpdate;
try
AMemoFrame.treeZipView.Clear;
ZipFile.Open(AFileName, TZipMode.zmRead);
ShowTree(AMemoFrame.treeZipView, ZipFile);
BindTree(AMemoFrame.treeZipView, AFileName);
exit;
for I := 0 to ZipFile.FileCount - 1 do
begin
LItem := TTreeViewItem.Create(AMemoFrame.treeZipView);
LItem.Parent := AMemoFrame.treeZipView;
LItem.Text := ZipFile.FileName[I];
ZipHeader := ZipFile.FileInfo[I];
LChildItem := TTreeViewItem.Create(AMemoFrame.treeZipView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %s', ['Modified:', FormatDateTime(
FormatSettings.ShortDateFormat + ' ' + FormatSettings.LongTimeFormat,
FileDateToDateTime(ZipHeader.ModifiedDateTime))]);
LChildItem := TTreeViewItem.Create(AMemoFrame.treeZipView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %d', ['Compressed size:', ZipHeader.CompressedSize]);
LChildItem := TTreeViewItem.Create(AMemoFrame.treeZipView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %d', ['Uncompressed size:', ZipHeader.UncompressedSize]);
LChildItem := TTreeViewItem.Create(AMemoFrame.treeZipView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %s', ['CRC32:', IntToHex(ZipHeader.CRC32, 8)]);
end;
finally
AMemoFrame.treeZipView.EndUpdate;
ZipFile.Free;
end;
end;
procedure ShowTree(AParent : TFmxObject; AZipFile : TZipFile);
var
ZipHeader: TZipHeader;
LItem: TTreeViewItem;
LChildItem: TTreeViewItem;
lTreeView : TFmxObject;
lZipFile : string;
FArray : TArray<string>;
lTreeUtils : TTreeUtils;
begin
lTreeView := AParent;
FArray := AZipFile.FileNames;
lTreeUtils := TTreeUtils.GetTreeUtils(FArray,
function (ADirName, AFullDirName : string; AParent : TObject) : TObject
begin
LItem := TTreeViewItem.Create(lTreeView);
LItem.Parent := AParent as TFmxObject;
LItem.Text := ADirName;
Result := LItem;
end,
procedure (AFileName, AFullFileName : string; AIndex : Integer; AParent : TObject)
begin
//lZipFile := FArray[AIndex];
LItem := TTreeViewItem.Create(lTreeView);
LItem.Parent := AParent as TFmxObject;
LItem.Text := AFileName;
LItem.Tag := AIndex;
LItem.TagString := AFullFileName;
ZipHeader := AZipFile.FileInfo[AIndex];
LChildItem := TTreeViewItem.Create(lTreeView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %s', ['Modified:', FormatDateTime(
FormatSettings.ShortDateFormat + ' ' + FormatSettings.LongTimeFormat,
FileDateToDateTime(ZipHeader.ModifiedDateTime))]);
LChildItem := TTreeViewItem.Create(lTreeView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %d', ['Compressed size:', ZipHeader.CompressedSize]);
LChildItem := TTreeViewItem.Create(lTreeView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %d', ['Uncompressed size:', ZipHeader.UncompressedSize]);
LChildItem := TTreeViewItem.Create(lTreeView);
LChildItem.Parent := LItem;
LChildItem.Text := Format('%s %s', ['CRC32:', IntToHex(ZipHeader.CRC32, 8)]);
end
);
try
lTreeUtils.BuildTreeFromFiles(AParent);
finally
FreeAndNil(lTreeUtils);
end;
end;
procedure BindTree(const ATree : TTreeView; AFileName : string);
begin
if not Assigned(ATree) then
Exit;
ATree.OnDblClick := frmMain.actOpenZipFileExecute;
ATree.TagString := AFileName.Trim;
end;
function ExtractFile(const AZipFile : string; AFileIndex : integer;
var AExtractFile : string) : Boolean;
var
ZipFile : TZipFile;
exPath : string;
lValid : boolean;
begin
Result := False;
ZipFile := TZipFile.Create;
try
lValid := TFile.Exists(AZipFile) and ZipFile.IsValid(AZipFile);
if not lValid then
exit;
ZipFile.Open(AZipFile, zmRead);
try
exPath := System.IOUtils.TPath.GetTempPath;
if not (ZipFile.FileCount > AFileIndex) then
exit;
ZipFile.Extract(AFileIndex, exPath, false);
AExtractFile := exPath + system.IOUtils.TPath.GetFileName(ZipFile.FileName[AFileIndex]);
Result := True;
finally
ZipFile.Close;
end;
finally
ZipFile.Free;
end;
end;
end.