/
JMC_FileSearch.pas
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JMC_FileSearch.pas
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unit JMC_FileSearch;
////////////////////////////////////////////////////////////////////////////////
// //
// Jared Crutchfield's Delphi Library //
// //
// JMC_FileSearch Library Unit //
// //
// Modified 29/09/2011 //
// //
////////////////////////////////////////////////////////////////////////////////
interface
uses
Classes,
SysUtils,
Windows,
Dialogs,
Forms,
ComCtrls,
Graphics,
ExtCtrls,
Controls,
ShellAPI;
type
TJMC_File = class;
TJMC_Folder = class;
TJMC_FileManager = class;
TJMC_FileAttribute = (JMC_faReadOnly, JMC_faHidden, JMC_faSysFile, JMC_faVolumeID, JMC_faDirectory, JMC_faArchive, JMC_faAnyFile);
TJMC_FileAttributes = set of TJMC_FileAttribute;
TJMC_AddFileEvent = procedure(const Sender: TObject; const AddedFile: TJMC_File) of object;
TJMC_AddFolderEvent = procedure(const Sender: TObject; const AddedFolder: TJMC_Folder) of object;
TJMC_AllowAddFileEvent = function(const FileName: string): Boolean of object;
TJMC_File = class(TObject)
private
FAttributes: TJMC_FileAttributes;
FExtension: string;
FFileName: string;
FFolder: TJMC_Folder;
FName: string;
FSize: Integer;
FTime: TDateTime;
public
constructor Create(const Folder: TJMC_Folder; const SearchRec: TSearchRec);
public
property Attributes: TJMC_FileAttributes read FAttributes;
property Extension: string read FExtension;
property FileName: string read FFileName;
property Folder: TJMC_Folder read FFolder;
property Name: string read FName;
property Size: Integer read FSize;
property Time: TDateTime read FTime;
end;
TJMC_Folder = class(TObject)
private
FAttributes: TJMC_FileAttributes;
FChildren: TList;
FFileManager: TJMC_FileManager;
FFiles: TList;
FItems: TList;
FName: string;
FParent: TJMC_Folder;
FPath: string;
FTime: TDateTime;
private
function GetChild(const Index: Integer): TJMC_Folder;
function GetChildCount: Integer;
function GetFile(const Index: Integer): TJMC_File;
function GetFileCount: Integer;
function GetItem(const Index: Integer): TObject;
function GetItemCount: Integer;
function GetItemName(const Index: Integer): string;
procedure SetPath(const Value: string);
public
constructor Create(const Parent: TJMC_Folder);
destructor Destroy; override;
public
procedure Clear;
procedure Fill(const SearchRec: TSearchRec);
function ItemIndex(const Item: TObject): Integer;
public
property Attributes: TJMC_FileAttributes read FAttributes;
property ChildCount: Integer read GetChildCount;
property Children[const Index: Integer]: TJMC_Folder read GetChild;
property FileCount: Integer read GetFileCount;
property FileManager: TJMC_FileManager read FFileManager write FFileManager;
property Files[const Index: Integer]: TJMC_File read GetFile;
property ItemCount: Integer read GetItemCount;
property ItemNames[const Index: Integer]: string read GetItemName;
property Items[const Index: Integer]: TObject read GetItem;
property Name: string read FName;
property Parent: TJMC_Folder read FParent;
property Path: string read FPath write SetPath;
property Time: TDateTime read FTime;
end;
TJMC_FileManager = class(TObject)
private
FCancelled: Boolean;
FPaths: TStrings;
FRootFolders: TList;
private
FOnAddFile: TJMC_AddFileEvent;
FOnAddFolder: TJMC_AddFolderEvent;
FOnAllowAddFile: TJMC_AllowAddFileEvent;
FOnFinish: TNotifyEvent;
private
function GetRootFolder(const Index: Integer): TJMC_Folder;
function GetRootFolderCount: Integer;
public
constructor Create;
destructor Destroy; override;
public
function AllowAddFile(const FileName: string): Boolean;
procedure CallAddFile(const AddedFile: TJMC_File);
procedure CallAddFolder(const AddedFolder: TJMC_Folder);
procedure Cancel;
procedure ClearRootFolders;
procedure Refresh;
public
property Cancelled: Boolean read FCancelled;
property Paths: TStrings read FPaths;
property RootFolderCount: Integer read GetRootFolderCount;
property RootFolders[const Index: Integer]: TJMC_Folder read GetRootFolder; default;
public
property OnAddFile: TJMC_AddFileEvent read FOnAddFile write FOnAddFile;
property OnAddFolder: TJMC_AddFolderEvent read FOnAddFolder write FOnAddFolder;
property OnAllowAddFile: TJMC_AllowAddFileEvent read FOnAllowAddFile write FOnAllowAddFile;
property OnFinish: TNotifyEvent read FOnFinish write FOnFinish;
end;
TJMC_TreeViewManager = class(TObject)
private
FFileManager: TJMC_FileManager;
FTreeView: TTreeView;
private
procedure CreateTreeViewFolder(const Folder: TJMC_Folder; const Parent: TTreeNode);
public
constructor Create(const TreeView: TTreeView);
destructor Destroy; override;
public
procedure FillTreeView;
public
property FileManager: TJMC_FileManager read FFileManager;
property TreeView: TTreeView read FTreeView;
end;
function SwapPaths(const CurrentFileNamePath: string; const NewFileNamePath: string; const FileName: string): string;
function Search(const TreeView: TTreeView; const FileName: string): TTreeNode;
procedure TreeViewCollapsed(Sender: TObject; Node: TTreeNode);
procedure TreeViewExpanded(Sender: TObject; Node: TTreeNode);
procedure AssignShellIcons(const ImageList: TImageList);
function ExpandPath(const MasterFileName, SlaveFileName: string): string;
function SettingsFileName: string;
const
JMC_ICON_FOLDERCLOSED: Integer = 0;
JMC_ICON_FOLDEROPEN: Integer = 1;
JMC_ICON_FILE: Integer = 2;
JMC_ICONID_FOLDERCLOSED: Cardinal = 3;
JMC_ICONID_FOLDEROPEN: Cardinal = 4;
JMC_ICONID_FILE: Cardinal = 224;
JMC_ICON_EXENAME: string = 'shell32.dll';
implementation
function SwapPaths(const CurrentFileNamePath: string; const NewFileNamePath: string; const FileName: string): string;
var
P1: string;
P2: string;
S: string;
begin
Result := '';
P1 := IncludeTrailingPathDelimiter(CurrentFileNamePath);
P2 := IncludeTrailingPathDelimiter(NewFileNamePath);
if Pos(UpperCase(CurrentFileNamePath), UpperCase(FileName)) <= 0 then
Exit;
S := FileName;
Delete(S, 1, Length(CurrentFileNamePath));
S := P2 + S;
Result := S;
end;
function Search(const TreeView: TTreeView; const FileName: string): TTreeNode;
var
F: TJMC_File;
N: TTreeNode;
begin
Result := nil;
if (TreeView.Items.Count = 0) or (FileExists(FileName) = False) then
Exit;
N := TreeView.Items.GetFirstNode;
while N <> nil do
begin
Application.ProcessMessages;
if Application.Terminated then
Exit;
if N.Data <> nil then
if TObject(N.Data) is TJMC_File then
begin
F := TJMC_File(N.Data);
if UpperCase(FileName) = UpperCase(F.FileName) then
begin
Result := N;
Exit;
end;
end;
N := N.GetNext;
end;
end;
procedure TreeViewCollapsed(Sender: TObject; Node: TTreeNode);
begin
Node.ImageIndex := JMC_ICON_FOLDERCLOSED;
Node.SelectedIndex := JMC_ICON_FOLDERCLOSED;
end;
procedure TreeViewExpanded(Sender: TObject; Node: TTreeNode);
begin
Node.ImageIndex := JMC_ICON_FOLDEROPEN;
Node.SelectedIndex := JMC_ICON_FOLDEROPEN;
end;
procedure AssignShellIcons(const ImageList: TImageList);
var
Buf: Graphics.TPicture;
P1, P2: HICON;
begin
Buf := Graphics.TPicture.Create;
try
if ExtractIconEx(PChar(JMC_ICON_EXENAME), JMC_ICONID_FOLDERCLOSED, P1, P2, 1) <> 1 then
begin
Buf.Icon.Handle := P2;
ImageList.AddIcon(Buf.Icon);
end;
if ExtractIconEx(PChar(JMC_ICON_EXENAME), JMC_ICONID_FOLDEROPEN, P1, P2, 1) <> 1 then
begin
Buf.Icon.Handle := P2;
ImageList.AddIcon(Buf.Icon);
end;
if ExtractIconEx(PChar(JMC_ICON_EXENAME), JMC_ICONID_FILE, P1, P2, 1) <> 1 then
begin
Buf.Icon.Handle := P2;
ImageList.AddIcon(Buf.Icon);
end;
finally
Buf.Free;
end;
end;
function ExpandPath(const MasterFileName, SlaveFileName: string): string;
var
S: string;
begin
GetDir(0, S);
try
ChDir(ExtractFilePath(MasterFileName));
except
Result := '';
Exit;
end;
Result := ExpandFilename(SlaveFileName);
ChDir(S);
end;
function SettingsFileName: string;
begin
Result := ChangeFileExt(ParamStr(0), '.ini');
end;
function AttrToJMCAttr(const Attr: Integer): TJMC_FileAttributes;
begin
Result := [];
if (Attr and faReadOnly) > 0 then
Include(Result, JMC_faReadOnly);
if (Attr and faHidden) > 0 then
Include(Result, JMC_faHidden);
if (Attr and faSysFile) > 0 then
Include(Result, JMC_faSysFile);
if (Attr and faVolumeID) > 0 then
Include(Result, JMC_faVolumeID);
if (Attr and faDirectory) > 0 then
Include(Result, JMC_faDirectory);
if (Attr and faArchive) > 0 then
Include(Result, JMC_faArchive);
if (Attr and faAnyFile) > 0 then
Include(Result, JMC_faAnyFile);
end;
{ TJMC_File }
constructor TJMC_File.Create(const Folder: TJMC_Folder; const SearchRec: TSearchRec);
var
i: Integer;
begin
FFolder := Folder;
FFileName := FFolder.Path + SearchRec.Name;
FName := SearchRec.Name;
for i := Length(FName) downto 1 do
if FName[i] = '.' then
begin
FExtension := Copy(FName, i + 1, Length(FName) - i);
FName := Copy(FName, 1, i - 1);
Break;
end;
FSize := SearchRec.Size;
FAttributes := AttrToJMCAttr(SearchRec.Attr);
FTime := FileDateToDateTime(SearchRec.Time);
end;
{ TJMC_Folder }
procedure TJMC_Folder.Clear;
var
i: Integer;
begin
FParent := nil;
FPath := '';
FName := '';
FAttributes := [];
FTime := 0;
FItems.Clear;
for i := 0 to FileCount - 1 do
Files[i].Free;
FFiles.Clear;
for i := 0 to ChildCount - 1 do
Children[i].Free;
FChildren.Clear;
end;
constructor TJMC_Folder.Create(const Parent: TJMC_Folder);
begin
FParent := Parent;
if FParent <> nil then
FFileManager := FParent.FileManager;
FFiles := TList.Create;
FChildren := TList.Create;
FItems := TList.Create;
end;
destructor TJMC_Folder.Destroy;
var
i: Integer;
begin
for i := 0 to FileCount - 1 do
Files[i].Free;
FFiles.Free;
for i := 0 to ChildCount - 1 do
Children[i].Free;
FChildren.Free;
FItems.Free;
inherited;
end;
procedure TJMC_Folder.Fill(const SearchRec: TSearchRec);
var
F: TSearchRec;
begin
if FParent <> nil then
begin
FPath := FParent.Path + SearchRec.Name + '\';
FName := SearchRec.Name;
FAttributes := AttrToJMCAttr(SearchRec.Attr);
FTime := FileDateToDateTime(SearchRec.Time);
end
else
begin
FName := FPath;
end;
FFileManager.CallAddFolder(Self);
FillChar(F, SizeOf(F), #0);
if FindFirst(FPath + '*', faAnyFile, F) = 0 then
try
repeat
if FFileManager.Cancelled then
Exit;
if (F.Name = '.') or (F.Name = '..') then
Continue;
if DirectoryExists(FPath + F.Name) then
begin
FChildren.Add(TJMC_Folder.Create(Self));
FItems.Add(Children[ChildCount - 1]);
Children[ChildCount - 1].Fill(F);
end
else
begin
if FFileManager.AllowAddFile(FPath + F.Name) then
begin
FItems.Add(FFiles[FFiles.Add(TJMC_File.Create(Self, F))]);
FFileManager.CallAddFile(Files[FileCount - 1]);
end;
end;
Application.ProcessMessages;
if Application.Terminated then
Exit;
until FindNext(F) <> 0;
finally
SysUtils.FindClose(F);
end;
end;
function TJMC_Folder.GetChild(const Index: Integer): TJMC_Folder;
begin
Result := FChildren[Index];
end;
function TJMC_Folder.GetChildCount: Integer;
begin
Result := FChildren.Count;
end;
function TJMC_Folder.GetFile(const Index: Integer): TJMC_File;
begin
Result := FFiles[Index];
end;
function TJMC_Folder.GetFileCount: Integer;
begin
Result := FFiles.Count;
end;
function TJMC_Folder.GetItem(const Index: Integer): TObject;
begin
Result := FItems[Index];
end;
function TJMC_Folder.GetItemCount: Integer;
begin
Result := FItems.Count;
end;
function TJMC_Folder.GetItemName(const Index: Integer): string;
var
Item: TObject;
begin
Result := '';
Item := Items[Index];
if Item <> nil then
if Item is TJMC_Folder then
Result := TJMC_Folder(Item).Name
else
if Item is TJMC_File then
Result := TJMC_File(Item).Name;
end;
function TJMC_Folder.ItemIndex(const Item: TObject): Integer;
var
i: Integer;
begin
for i := 0 to ItemCount - 1 do
if Items[i] <> nil then
if Items[i] = Item then
begin
Result := i;
Exit;
end;
Result := -1;
end;
procedure TJMC_Folder.SetPath(const Value: string);
var
F: SysUtils.TSearchRec;
begin
Clear;
if DirectoryExists(Value) then
begin
FPath := IncludeTrailingPathDelimiter(Value);
FillChar(F, SizeOf(F), #0);
if SysUtils.FindFirst(Value + '*', faAnyFile, F) = 0 then
begin
Fill(F);
SysUtils.FindClose(F);
end;
end;
end;
{ TJMC_FileManager }
function TJMC_FileManager.AllowAddFile(const FileName: string): Boolean;
begin
Result := True;
if Assigned(FOnAllowAddFile) then
Result := FOnAllowAddFile(FileName);
end;
procedure TJMC_FileManager.CallAddFile(const AddedFile: TJMC_File);
begin
if Assigned(FOnAddFile) then
FOnAddFile(Self, AddedFile);
end;
procedure TJMC_FileManager.CallAddFolder(const AddedFolder: TJMC_Folder);
begin
if Assigned(FOnAddFolder) then
FOnAddFolder(Self, AddedFolder);
end;
procedure TJMC_FileManager.Cancel;
begin
FCancelled := True;
end;
procedure TJMC_FileManager.ClearRootFolders;
var
i: Integer;
begin
for i := 0 to RootFolderCount - 1 do
RootFolders[i].Free;
FRootFolders.Clear;
end;
constructor TJMC_FileManager.Create;
begin
FPaths := TStringList.Create;
FRootFolders := TList.Create;
end;
destructor TJMC_FileManager.Destroy;
var
i: Integer;
begin
for i := 0 to RootFolderCount - 1 do
RootFolders[i].Free;
FRootFolders.Free;
FPaths.Free;
inherited;
end;
function TJMC_FileManager.GetRootFolder(const Index: Integer): TJMC_Folder;
begin
Result := FRootFolders[Index];
end;
function TJMC_FileManager.GetRootFolderCount: Integer;
begin
Result := FRootFolders.Count;
end;
procedure TJMC_FileManager.Refresh;
var
i: Integer;
begin
FCancelled := False;
ClearRootFolders;
for i := 0 to FPaths.Count - 1 do
begin
FRootFolders.Add(TJMC_Folder.Create(nil));
RootFolders[i].FileManager := Self;
RootFolders[i].Path := FPaths[i];
end;
if Assigned(FOnFinish) then
FOnFinish(Self);
end;
{ TJMC_TreeViewManager }
constructor TJMC_TreeViewManager.Create(const TreeView: TTreeView);
begin
FTreeView := TreeView;
FFileManager := TJMC_FileManager.Create;
end;
procedure TJMC_TreeViewManager.CreateTreeViewFolder(const Folder: TJMC_Folder; const Parent: TTreeNode);
var
FolderNode, FileNode: TTreeNode;
i: Integer;
begin
if Parent <> nil then
FolderNode := FTreeView.Items.AddChild(Parent, Folder.Name)
else
FolderNode := FTreeView.Items.Add(Parent, Folder.Name);
FolderNode.Data := Folder;
FolderNode.ImageIndex := JMC_ICON_FOLDERCLOSED;
FolderNode.SelectedIndex := JMC_ICON_FOLDERCLOSED;
for i := 0 to Folder.ChildCount - 1 do
CreateTreeViewFolder(Folder.Children[i], FolderNode);
for i := 0 to Folder.FileCount - 1 do
begin
Application.ProcessMessages;
if Application.Terminated then
Exit;
if Length(Folder.Files[i].Extension) > 0 then
FileNode := FTreeView.Items.AddChild(FolderNode, Folder.Files[i].Name + '.' + Folder.Files[i].Extension)
else
FileNode := FTreeView.Items.AddChild(FolderNode, Folder.Files[i].Name);
FileNode.Data := Folder.Files[i];
FileNode.ImageIndex := JMC_ICON_FILE;
FileNode.SelectedIndex := JMC_ICON_FILE;
end;
end;
destructor TJMC_TreeViewManager.Destroy;
begin
FFileManager.Free;
inherited;
end;
procedure TJMC_TreeViewManager.FillTreeView;
var
i: Integer;
begin
FTreeView.Items.BeginUpdate;
FTreeView.Items.Clear;
for i := 0 to FFileManager.RootFolderCount - 1 do
CreateTreeViewFolder(FFileManager[i], nil);
FTreeView.Items.EndUpdate;
end;
end.