+ Added fileinfo unit

fcl/win32/Makefile.fpc

@@ -3,7 +3,7 @@
 #
 
 [targets]
-units=classes $(INCUNITS) $(XMLUNITS) $(SHEDITUNITS) process
+units=classes $(INCUNITS) $(XMLUNITS) $(SHEDITUNITS) process fileinfo
 
 [defaults]
 defaulttarget=win32

fcl/win32/fileinfo.pp

@@ -0,0 +1,169 @@
+{
+    $Id$
+    This file is part of the Free Component Library (FCL)
+    Copyright (c) 1999-2000 by the Free Pascal development team
+
+    See the file COPYING.FPC, included in this distribution,
+    for details about the copyright.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+ **********************************************************************}
+
+{
+
+ Based on getver by Bernd Juergens - Munich, Germany
+ email :[email protected]
+
+ Usage : Drop component on form. Set desired file name using
+         FileVersionInfo.filename := 'c:\winnt\system32\comctl32.dll'
+         or something like that.
+         Read StringLists VersionStrings and VersionCategories.
+
+         or check a single entry:
+         FileVersionInfo1.fileName := 'd:\winnt\system32\comctl32.dll';
+         showMessage(FileVersionInfo1.getVersionSetting('ProductVersion'));
+}
+unit fileinfo;
+{$mode objfpc}
+interface
+
+uses
+  Windows, SysUtils, Classes;
+
+
+{ Record to receive charset }
+type TTranslation = record
+   langID  : WORD;
+   charset  : WORD;
+end;
+
+type
+  TFileVersionInfo = class(TComponent)
+  private
+    FFileName : String;
+    FmyVersionStrings : TStringList;
+    FmyVersionCategories    : TStringList;
+
+    procedure SetFileName (inp : string);
+    procedure readVersionFromFile;
+  protected
+    { Protected-Deklarationen}
+  public
+     constructor Create(AOwner: TComponent);  override;
+     function getVersionSetting(inp : string): String;
+  published
+    property fileName : string  read FFileName write SetFileName;
+    property VersionStrings  : TStringList  read FmyVersionStrings;
+    property VersionCategories : TStringList read FmyVersionCategories;
+  end;
+
+implementation
+
+
+{ initialize everything }
+constructor TFileVersionInfo.Create(AOwner: TComponent);
+begin
+    FmyVersionStrings := TStringList.Create;
+    FmyVersionCategories  := TStringList.Create;
+    FFileName := '';
+    inherited create(Aowner);
+end;
+
+{ Get filename, check if file exists and read info from file }
+procedure TFileVersionInfo.SetFileName (inp : string);
+begin
+    FmyVersionStrings.clear;
+    FmyVersionCategories.clear;
+
+    if fileexists(inp) then
+    begin
+         FFileName := inp;
+         readVersionFromFile;
+    end
+    else
+    begin
+         FFileName := '';
+    end;
+end;
+
+{ read info from file }
+procedure TFileVersionInfo.readVersionFromFile;
+var struSize : Dword;
+    dwBytes,someDummy : Dword;
+    a,txt : array[0..256] of char;
+    p : pchar;
+    i : integer;
+    pp : pointer;
+    theFixedInfo : TVSFixedFileInfo;
+    theTrans : TTranslation;
+    s : string;
+    ts  : TStringList;
+begin
+     ts := TStringList.Create;
+     ts.add('CompanyName');
+     ts.add('FileDescription');
+     ts.add('FileVersion');
+     ts.add('InternalName');
+     ts.add('LegalCopyright');
+     ts.add('OriginalFilename');
+     ts.add('ProductName');
+     ts.add('ProductVersion');
+
+     strPCopy(a,FFileName);
+     { get size of data }
+     struSize := GetFileVersionInfoSize(a,@someDummy);
+     if struSize=0 then exit;
+     p := NIL;
+     try
+       { get memory }
+       GetMem(p,struSize+10);
+       { get data }
+       if not GetFileVersionInfo(a,0,struSize,p) then exit;
+       { get root info }
+       if not VerQueryValue(p,'\',pp,@dwBytes) then exit;
+       move(pp^,theFixedInfo,dwBytes);
+
+       { get translation info }
+       if not VerQueryValue(p,'\VarFileInfo\Translation',pp,@dwBytes) then 
+         exit;
+       move(pp^,theTrans,dwBytes);
+
+       { iterate over defined items }
+       for i:=0 to ts.count-1 do
+       begin
+         s := '\StringFileInfo\'+inttohex(theTrans.langID,4)+inttohex(theTrans.charset,4)+'\'+ts[i];
+         StrPCopy(a,s);
+         if not VerQueryValue(p,a,pp,@dwBytes) then exit;
+         if dwBytes>0 then
+         begin
+          move(pp^,txt,dwBytes);
+          FmyVersionCategories.add(ts[i]);
+          FmyVersionStrings.add(StrPas(txt));
+         end
+       end;
+     finally
+       { release memory }
+       FreeMem(p);
+     end;
+end;
+
+{ get single version string }
+function TFileVersionInfo.getVersionSetting(inp : string): String;
+var i : integer;
+begin
+     result := '';
+     for i:= 0 to FmyVersionCategories.Count -1 do
+     begin
+          if lowercase(FmyVersionCategories[i])=lowercase(inp) then
+          begin
+               result := FmyVersionStrings[i];
+               break;
+          end;
+     end;
+end;
+
+end.
+