Mega Code Archive
Everything About a File
<![CDATA[
Title: Everything About a File
Question: This Object can be used to display anything about a file. It even inclused a Execute() function to execute the file.
Usage: Create object with filename or path.
Answer:
unit FileInfo;
{ ---------------------------------------------------------------------------- }
{ File Information Object }
{ (C)2000 ALTA A/S }
{ }
{ Extract File Information (version numbers, dates, file extension...) from }
{ files. Execute file or open file with associated program. }
{ File Can also be a volume or directory. }
{ }
{ Date Who What }
{ Nov.2000 B.Pedersen File Created }
{ Jan.2001 B.Pedersen Added Many more function about file version }
{ Fixed time zone problems with datetimes }
{ Thanks to the contributors of samples and fixes }
{ ---------------------------------------------------------------------------- }
interface
{ ---------------------------------------------------------------------------- }
uses
forms, shellapi, windows, sysutils;
type
EFileInfo = exception;
TLangInfoBuffer = array [1..4] of SmallInt;
TFileInfo = class
private
f : TSearchRec;
fVerBlk : TVSFixedFileInfo;
fFileName : string;
function GetFileVersion( AFileName : string ) : boolean;
public
constructor Create( AFileName : string ); // Create Object
destructor Destroy; override;
function Execute : integer; // Open file with associated
program
function VersionString : string; // File Version. String empty
if string not found
function OS : string; // Operating System
function Path : string; // File Path
function FileName : string; // File Name
function Name : string; // File Name without file
extension
function DosFileName : string; // DOS File Name
function FileExt : string; // File Extension
function FileType : string; // File Type
function FileSize : longint; // File Size
function isDebugBuild : boolean; // True if debug build flag is
set
function isPreRelease : boolean; // True if prerelease flag is
set
function isPrivateBuild : boolean; // True if private build flag
is set
function isSpecialBuild : boolean; // True if special build flag
is set
function isDirectory : boolean; // True if file is not a file
but a directory
function isHidden : boolean; // True if file is hidden
function isSystemFile : boolean; // True if file is a systemfile
function isVolumeId : boolean; // True if file is a volumeid
function isArchive : boolean; // True if file is archived
function CreationTime : TDateTime; // Creation Date/Time
function LastAccessed : TDateTime; // Last Accessed Date/Time
function LastWritten : TDateTime; // Last Written Date/Time
end;
{ ---------------------------------------------------------------------------- }
implementation
{ ---------------------------------------------------------------------------- }
constructor TFileInfo.Create( AFileName : string );
var
ret : integer;
begin
inherited Create;
fFileName := AFileName;
ret := FindFirst( AFileName, faReadOnly + faHidden+ faSysFile + faVolumeID +
faDirectory + faArchive + faAnyFile, f );
if ret 0 then
SysUtils.RaiseLastWin32Error;
end;
{ ---------------------------------------------------------------------------- }
destructor TFileInfo.Destroy;
begin
FindClose( f );
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.GetFileVersion( AFileName : string ) : boolean;
var
InfoSize,puLen : DWord;
Pt,InfoPtr : Pointer;
begin
InfoSize := GetFileVersionInfoSize( PChar(AFileName), puLen );
fillchar( fVerBlk, sizeof(TVSFixedFileInfo), 0);
if InfoSize 0 then
begin
GetMem(Pt,InfoSize);
GetFileVersionInfo( PChar(AFileName), 0, InfoSize, Pt);
VerQueryValue(Pt,'\',InfoPtr,puLen);
move(InfoPtr^, fVerBlk, sizeof(TVSFixedFileInfo) );
FreeMem(Pt);
result := true;
end
else
result := false;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.VersionString : string;
begin
if GetFileVersion( fFileName ) then
result := Format('%u.%u.%u.%u',
[HiWord(fVerBlk.dwProductVersionMS),
LoWord(fVerBlk.dwProductVersionMS),
HiWord(fVerBlk.dwProductVersionLS),
LoWord(fVerBlk.dwProductVersionLS)])
else
result := '';
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.isDebugBuild : boolean;
begin
result := FALSE;
if GetFileVersion( fFileName ) then
result := (fVerBlk.dwFileFlagsMask and fVerBlk.dwFileFlags and
VS_FF_DEBUG) 0
end;
{ ---------------------------------------------------------------------------- }
function TFIleInfo.isPreRelease : boolean;
begin
result := FALSE;
if GetFileVersion( fFileName ) then
result := (fVerBlk.dwFileFlagsMask and fVerBlk.dwFileFlags and
VS_FF_PRERELEASE) 0
end;
{ ---------------------------------------------------------------------------- }
function TFIleInfo.isPrivateBuild : boolean;
begin
result := FALSE;
if GetFileVersion( fFileName ) then
result := (fVerBlk.dwFileFlagsMask and fVerBlk.dwFileFlags and
VS_FF_PRIVATEBUILD) 0
end;
{ ---------------------------------------------------------------------------- }
function TFIleInfo.isSpecialBuild : boolean;
begin
result := FALSE;
if GetFileVersion( fFileName ) then
result := (fVerBlk.dwFileFlagsMask and fVerBlk.dwFileFlags and
VS_FF_SPECIALBUILD) 0
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.OS : string;
begin
if GetFileVersion( fFileName ) then
case fVerBlk.dwFileOS of
VOS_DOS_WINDOWS16 : result := 'MS-DOS or 16 bit Windows';
VOS_DOS_WINDOWS32 : result := '32 bit Windows';
VOS_OS216_PM16 : result := '16 bit OS/2';
VOS_OS232_PM32 : result := '32 bit OS/2';
VOS_NT_WINDOWS32 : result := 'Win32 or Windows NT';
else
result := 'Unknown OS';
end
else
result := '';
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.FileType : string;
var
S : string;
begin
S := '';
if GetFileVersion( fFileName ) then
begin
case fVerBlk.dwFileType of
VFT_APP : S := 'Application';
VFT_DLL : S := 'Dynamic Link Library (DLL)';
VFT_DRV : begin
S := 'Device Driver - ';
case fVerBlk.dwFileSubtype of
VFT2_DRV_PRINTER : S := S + 'Printer';
VFT2_DRV_KEYBOARD : S := S + 'Keyboard';
VFT2_DRV_LANGUAGE : S := S + 'Language';
VFT2_DRV_DISPLAY : S := S + 'Display';
VFT2_DRV_MOUSE : S := S + 'Mouse';
VFT2_DRV_NETWORK : S := S + 'Network';
VFT2_DRV_SYSTEM : S := S + 'System';
VFT2_DRV_INSTALLABLE : S := S + 'Installable';
VFT2_DRV_SOUND : S := S + 'Sound';
else
S := S + 'Unknown';
end;
end;
VFT_FONT : begin
S := 'Font File - ';
case fVerBlk.dwFileSubType of
VFT2_FONT_RASTER : S := S + 'Raster';
VFT2_FONT_VECTOR : S := S + 'Vector';
VFT2_FONT_TRUETYPE : S := S + 'TrueType';
else
S := S + 'Unknown';
end;
end;
VFT_VXD : S := 'Virtual Device';
VFT_STATIC_LIB : S := 'Static Link Library';
else
S := 'Unknown File Type';
end;
end;
Result := S;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.Path : string;
begin
result := ExtractFilePath( fFileName );
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.FileName : string;
begin
result := ExtractFileName( fFileName );
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.Name : string;
begin
if Pos( FileExt, FileName ) 0 then
result := Copy( FileName, 0, pos( FileExt, FileName )-1 )
else
result := FileName;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.DosFileName : string;
begin
result := StrPas( f.FindData.cAlternateFileName )
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.FileExt : string;
begin
result := ExtractFileExt( fFileName );
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.isDirectory : boolean;
begin
result := f.Attr AND faDirectory = faDirectory;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.isHidden : boolean;
begin
result := f.Attr AND faHidden = faHidden;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.isSystemFile : boolean;
begin
result := f.Attr AND faSysFile = faSysFile;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.isVolumeId : boolean;
begin
result := f.Attr AND faVolumeId = faVolumeId;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.isArchive : boolean;
begin
result := f.Attr AND faArchive = faArchive;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.FileSize : longint;
begin
result := f.Size;
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.CreationTime : TDateTime;
var
LTime : TFileTime;
Systemtime : TSystemtime;
begin
FileTimeToLocalFileTime( f.FindData.ftCreationTime, LTime);
FileTimeToSystemTime( LTime, SystemTime );
result := SystemTimeToDateTime( SystemTime);
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.LastAccessed : TDateTime;
var
LTime : TFileTime;
Systemtime : TSystemtime;
begin
FileTimeToLocalFileTime( f.FindData.ftLastAccessTime, LTime);
FileTimeToSystemTime( LTime, SystemTime );
result := SystemTimeToDateTime( SystemTime);
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.LastWritten : TDateTime;
var
LTime : TFileTime;
Systemtime : TSystemtime;
begin
FileTimeToLocalFileTime( f.FindData.ftLastWriteTime, LTime);
FileTimeToSystemTime( LTime, SystemTime );
result := SystemTimeToDateTime( SystemTime);
end;
{ ---------------------------------------------------------------------------- }
function TFileInfo.Execute : integer;
begin
result := shellapi.ShellExecute( Application.Handle, 'open', pChar( fFileName ),
'', pChar(Path),
SW_SHOWDEFAULT );
case result of
0 :
raise Exception.Create( 'The operating system is out of memory or resources.' );
ERROR_FILE_NOT_FOUND :
raise Exception.Create( 'The specified file was not found.' );
ERROR_PATH_NOT_FOUND :
raise Exception.Create( 'The specified path was not found.' );
ERROR_BAD_FORMAT :
raise Exception.Create( 'The .EXE file is invalid (non-Win32 .EXE or error ' +
'in .EXE image).' );
SE_ERR_ACCESSDENIED :
raise Exception.Create( 'The operating system denied access to the specified file.' );
SE_ERR_ASSOCINCOMPLETE :
raise Exception.Create( 'The filename association is incomplete or invalid.' );
SE_ERR_DDEBUSY :
raise Exception.Create( 'The DDE transaction could not be completed because ' +
'other DDE transactions were being processed.' );
SE_ERR_DDEFAIL :
raise Exception.Create( 'The DDE transaction failed.' );
SE_ERR_DDETIMEOUT :
raise Exception.Create( 'The DDE transaction could not be completed because the ' +
'request timed out.' );
SE_ERR_DLLNOTFOUND :
raise Exception.Create( 'The specified dynamic-link library was not found.' );
SE_ERR_NOASSOC :
raise Exception.Create( 'There is no application associated with the given ' +
'filename extension.' );
SE_ERR_OOM :
raise Exception.Create( 'There was not enough memory to complete the operation.' );
SE_ERR_SHARE :
raise Exception.Create( 'A sharing violation occurred.' );
else
end;
end;
end.
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