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uFileTypeHelper.pas
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uFileTypeHelper.pas
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unit uFileTypeHelper;
interface
uses
System.SysUtils, System.Classes, System.IOUtils, FMX.Dialogs
{$IFDEF MSWINDOWS}
, Winapi.Windows
{$ENDIF MSWINDOWS}
{$IF DEFINED(MACOS) AND NOT DEFINED(IOS)}
, Macapi.AppKit, Macapi.Foundation, Macapi.ObjectiveC
{$ENDIF MACOS}
, uConsts, uUtils;
const
cDOSMagic = $5A4D; // magic number for a DOS executable
cNEMagic = $454E; // magic number for a NE executable (Win 16)
cPEMagic = $4550; // magic nunber for a PE executable (Win 32)
cLEMagic = $454C; // magic number for a Virtual Device Driver
type
TFileType = (ftUnknown, ftBinary, ftArchive, ftImage, ftScript);
TExtentionData = record
FileType: TFileType;
FileExt: string;
end;
const
CFileTypeArray: array[0..77] of TExtentionData =
(
//.jpeg;.jpg;.jpe;.tif;.tiff;.png;.bmp;.ico;.gif
(FileType: ftImage; FileExt: '.jpeg'), (FileType: ftImage; FileExt: '.jpg'),
(FileType: ftImage; FileExt: '.jpe'), (FileType: ftImage; FileExt: '.tif'),
(FileType: ftImage; FileExt: '.tiff'), (FileType: ftImage; FileExt: '.png'),
(FileType: ftImage; FileExt: '.bmp'), (FileType: ftImage; FileExt: '.ico'),
(FileType: ftImage; FileExt: '.gif'),
//.exe;.bin;.dll;*.dcu;*.res;*.bpl;*.dcl;*.dmg;*.pkg
(FileType: ftBinary; FileExt: '.exe'), (FileType: ftBinary; FileExt: '.bin'),
(FileType: ftBinary; FileExt: '.dll'), (FileType: ftBinary; FileExt: '.dcu'),
(FileType: ftBinary; FileExt: '.res'), (FileType: ftBinary; FileExt: '.bpl'),
(FileType: ftBinary; FileExt: '.dcl'), (FileType: ftBinary; FileExt: '.dmg'),
(FileType: ftBinary; FileExt: '.pkg'), (FileType: ftBinary; FileExt: '.a'),
//*.zip;*.apk;*.ipa
(FileTYpe: ftArchive; FileExt: '.zip'), (FileType: ftArchive; FileExt: '.apk'),
(FileType: ftArchive; FileExt: '.ipa'),
//pas;dpr;dpk;dfm;fmx;inc;lpr;lfm;spr;
(FileType: ftScript; FileExt: '.pas'), (FileType: ftScript; FileExt: '.dpr'),
(FileType: ftScript; FileExt: '.dpk'), (FileType: ftScript; FileExt: '.dfm'),
(FileType: ftScript; FileExt: '.fmx'), (FileType: ftScript; FileExt: '.inc'),
(FileType: ftScript; FileExt: '.lpr'), (FileType: ftScript; FileExt: '.spr'),
//other
(FileType: ftScript; FileExt: '.cpp'), (FileType: ftScript; FileExt: '.h'),
(FileType: ftScript; FileExt: '.bas'), (FileType: ftScript; FileExt: '.cs'),
(FileType: ftScript; FileExt: '.js'), (FileType: ftScript; FileExt: '.java'),
(FileType: ftScript; FileExt: '.css'), (FileType: ftScript; FileExt: '.xml'),
(FileType: ftScript; FileExt: '.php'),(FileType: ftScript; FileExt: '.c'),
(FileType: ftScript; FileExt: '.hpp'),(FileType: ftScript; FileExt: '.xfm'),
(FileType: ftScript; FileExt: '.bpg'),(FileType: ftScript; FileExt: '.bpk'),
(FileType: ftScript; FileExt: '.m'),(FileType: ftScript; FileExt: '.plist'),
(FileType: ftScript; FileExt: '.xcscheme'),(FileType: ftScript; FileExt: '.xcbkptlist'),
(FileType: ftScript; FileExt: '.xcworkspacedata'),(FileType: ftScript; FileExt: '.json'),
(FileType: ftScript; FileExt: '.xib'),(FileType: ftScript; FileExt: '.storyboard'),
(FileType: ftScript; FileExt: '.sh'),(FileType: ftScript; FileExt: '.txt'),
(FileType: ftScript; FileExt: '.log'),(FileType: ftScript; FileExt: '.log'),
(FileType: ftScript; FileExt: '.htm'),(FileType: ftScript; FileExt: '.html'),
(FileType: ftScript; FileExt: '.pbxproj'),(FileType: ftScript; FileExt: '.pl'),
(FileType: ftScript; FileExt: '.bat'),(FileType: ftScript; FileExt: '.vcproj'),
(FileType: ftScript; FileExt: '.def'),(FileType: ftScript; FileExt: '.gitignore'),
(FileType: ftScript; FileExt: '.am'),(FileType: ftScript; FileExt: '.csv'),
(FileType: ftScript; FileExt: '.mk'),
//dproj;deployproj;lpi;sproj;dsk;sfm;stat;todo;vlb
(FileType: ftScript; FileExt: '.dproj'),(FileType: ftScript; FileExt: '.deployproj'),
(FileType: ftScript; FileExt: '.lpi'), (FileType: ftScript; FileExt: '.sproj'),
(FileType: ftScript; FileExt: '.dsk'), (FileType: ftScript; FileExt: '.sfm'),
(FileType: ftScript; FileExt: '.stat'), (FileType: ftScript; FileExt: '.todo'),
(FileType: ftScript; FileExt: '.vlb'), (FileType: ftScript; FileExt: '.dproj.local'),
//sql;
(FileType: ftScript; FileExt: '.sql')
);
type
TFileTypeHelper = record helper for TFileType
public
function FileType(const AFileName: string): TFileType; inline;
function TypeString: string; inline;
end;
function GetFileCRLF(const AFileName: string): string;
function GetFileEncodingStr(const AFileName: string): string; overload;
function GetFileEncodingStr(const AFileName: string; var CRLF: string): string; overload;
function GetFileLineEndStr(const AFileName: string): string;
{$IFDEF MSWINDOWS}
function GetFileTypeWin(const AFileName: string): TFileType;
{$ENDIF MSWINDOWS}
{$IF DEFINED(MACOS) AND NOT DEFINED(IOS)}
function GetFileTypeMac(const AFileName: string): TFileType;
{$ENDIF MACOS}
function GetFileType(const AFileName: string): TFileType;
implementation
function GetFileCRLF(const AFileName: string): string;
var
LStream: TFileStream;
B: Byte;
begin
Result := '';
LStream := TFileStream.Create(AFileName, fmOpenRead);
try
LStream.Seek(0, TSeekOrigin.soBeginning);
while LStream.Read(B, 1) = 1 do
begin
if B = $A then
begin
Result := 'LF';
Break;
end;
if B = $D then
begin
if (LStream.Read(B, 1) = 1) and (B = $A) then
Result := 'CRLF'
else
Result := 'CR';
Break;
end;
end;
finally
LStream.Free;
end;
end;
function GetFileEncodingStr(const AFileName: string): string;
var
LBuffer: TBytes;
LStream: TFileStream;
begin
LStream := TFileStream.Create(AFileName, fmOpenRead);
try
SetLength(LBuffer, 3);
LStream.Seek(0, TSeekOrigin.soBeginning);
LStream.ReadBuffer(Pointer(LBuffer)^, 3);
case LBuffer[0] of
$EF: begin
if (LBuffer[1] = $BB) and (LBuffer[2] = $BF) then
Result := 'UTF-8';
end;
$FE: begin
if (LBuffer[1] = $FF) then
Result := 'UTF-16 BE';
end;
$FF: begin
if LBuffer[1] = $FE then
Result := 'UTF-16 LE';
end;
else
Result := 'default';
end;
finally
LStream.Free;
end;
end;
function GetFileEncodingStr(const AFileName: string; var CRLF: string): string;
var
LBuffer: TBytes;
LStream: TFileStream;
B: byte;
begin
LStream := TFileStream.Create(AFileName, fmOpenRead);
try
SetLength(LBuffer, 3);
LStream.Seek(0, TSeekOrigin.soBeginning);
LStream.ReadBuffer(Pointer(LBuffer)^, 3);
case LBuffer[0] of
$EF: begin
if (LBuffer[1] = $BB) and (LBuffer[2] = $BF) then
Result := 'UTF-8';
end;
$FE: begin
if (LBuffer[1] = $FF) then
Result := 'UTF-16 BE';
end;
$FF: begin
if LBuffer[1] = $FE then
Result := 'UTF-16 LE';
end;
else
Result := 'default';
end;
LStream.Seek(0, TSeekOrigin.soBeginning);
CRLF := '';
while LStream.Read(B, 1) = 1 do
begin
if B = $A then
begin
CRLF := 'LF';
Break;
end;
if B = $D then
begin
if (LStream.Read(B, 1) = 1) and (B = $A) then
CRLF := 'CRLF'
else
CRLF := 'CR';
Break;
end;
end;
finally
LStream.Free;
end;
end;
function GetFileLineEndStr(const AFileName: string): string;
var
LBuffer: TBytes;
LStream: TFileStream;
B: byte;
begin
LStream := TFileStream.Create(AFileName, fmOpenRead);
try
SetLength(LBuffer, 3);
LStream.Seek(0, TSeekOrigin.soBeginning);
Result := '';
while LStream.Read(B, 1) = 1 do
begin
if B = $A then
begin
Result := 'LF';
Break;
end;
if B = $D then
begin
if (LStream.Read(B, 1) = 1) and (B = $A) then
Result := 'CRLF'
else
Result := 'CR';
Break;
end;
end;
finally
LStream.Free;
end;
end;
{$IFDEF MSWINDOWS}
function GetFileTypeWin(const AFileName: string): TFileType;
var
LHeader: TImageDosHeader;
LStream: TFileStream;
S: string;
begin
Result := ftUnknown;
LStream := TFileStream.Create(AFileName, fmOpenread);
try
if LStream.Size > SizeOf(LHeader) then
begin
LStream.ReadBuffer(LHeader, SizeOf(LHeader));
case LHeader.e_magic of
cDOSMagic: Result := ftBinary;
cNEMagic: Result := ftBinary;
cPEMagic: Result := ftBinary;
cLEMagic: Result := ftBinary;
end;
end;
finally
LStream.Free;
end;
if Result = ftBinary then
Exit;
if TPath.HasExtension(AFileName) then
begin
S := TPath.GetExtension(AFileName);
end else
Result := ftUnknown;
end;
{$ENDIF}
{$IF DEFINED(MACOS) AND NOT DEFINED(IOS)}
function GetFileTypeMac(const AFileName: string): TFileType;
var
FileMgr : NSFileManager;
Dict: NSDictionary;
begin
FileMgr := TNSFileManager.Create;
Dict := FileMgr.fileAttributesAtPath(NSSTR(AFileName), False);
Result := ftScript;
end;
{$ENDIF MACOS}
function GetFileType(const AFileName: string): TFileType;
begin
{$IFDEF MSWINDOWS}
Result := GetFileTypeWin(AFileName);
{$ENDIF MSWINDOWS}
{$IF DEFINED(MACOS) AND NOT DEFINED(IOS)}
Result := GetFileTypeMac(AFileName);
{$ENDIF MACOS}
end;
{ TFileTypeHelper }
function TFileTypeHelper.FileType(const AFileName: string): TFileType;
var
I: integer;
S: string;
begin
Result := ftUnknown;
if TPath.HasExtension(AFileName) then
begin
S := TPath.GetExtension(AFileName);
for I := Low(CFileTypeArray) to High(CFileTypeArray) do
if SameText(S, CFileTypeArray[I].FileExt) then
begin
Result := CFileTypeArray[I].FileType;
Break;
end;
end;
end;
function TFileTypeHelper.TypeString: string;
begin
case Self of
ftUnknown: Result := 'Unknown';
ftBinary: Result := 'Binary';
ftArchive: Result := 'Archive';
ftImage: Result := 'Image';
ftScript: Result := 'Script';
end;
end;
end.