// ---------------------------------------------------------------------------- // // Inno Setup Ver: 5.2.1 // Script Version: 1.3.1 // Author: Jared Breland <jbreland@legroom.net> // Homepage: http://www.legroom.net/software // // Script Function: // Enable modification of system path directly from Inno Setup installers // // Instructions: // Copy modpath.iss to the same directory as your setup script // // Add this statement to your [Setup] section // ChangesEnvironment=yes // // Add this statement to your [Tasks] section // You can change the Description or Flags, but the Name must be modifypath // Name: modifypath; Description: &Add application directory to your system path; Flags: unchecked // // Add the following to the end of your [Code] section // setArrayLength must specify the total number of dirs to be added // Dir[0] contains first directory, Dir[1] contains second, etc. // function ModPathDir(): TArrayOfString; // var // Dir: TArrayOfString; // begin // setArrayLength(Dir, 1) // Dir[0] := ExpandConstant('{app}'); // Result := Dir; // end; // #include "modpath.iss" // ---------------------------------------------------------------------------- procedure ModPath(); var oldpath: String; newpath: String; pathArr: TArrayOfString; aExecFile: String; aExecArr: TArrayOfString; i, d: Integer; pathdir: TArrayOfString; begin // Get array of new directories and act on each individually pathdir := ModPathDir(); for d := 0 to GetArrayLength(pathdir)-1 do begin // Modify WinNT path if UsingWinNT() = true then begin // Get current path, split into an array RegQueryStringValue(HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment', 'Path', oldpath); oldpath := oldpath + ';'; i := 0; while (Pos(';', oldpath) > 0) do begin SetArrayLength(pathArr, i+1); pathArr[i] := Copy(oldpath, 0, Pos(';', oldpath)-1); oldpath := Copy(oldpath, Pos(';', oldpath)+1, Length(oldpath)); i := i + 1; // Check if current directory matches app dir if pathdir[d] = pathArr[i-1] then begin // if uninstalling, remove dir from path if IsUninstaller() = true then begin continue; // if installing, abort because dir was already in path end else begin abort; end; end; // Add current directory to new path if i = 1 then begin newpath := pathArr[i-1]; end else begin newpath := newpath + ';' + pathArr[i-1]; end; end; // Append app dir to path if not already included if IsUninstaller() = false then newpath := newpath + ';' + pathdir[d]; // Write new path RegWriteStringValue(HKEY_LOCAL_MACHINE, 'SYSTEM\CurrentControlSet\Control\Session Manager\Environment', 'Path', newpath); // Modify Win9x path end else begin // Convert to shortened dirname pathdir[d] := GetShortName(pathdir[d]); // If autoexec.bat exists, check if app dir already exists in path aExecFile := 'C:\AUTOEXEC.BAT'; if FileExists(aExecFile) then begin LoadStringsFromFile(aExecFile, aExecArr); for i := 0 to GetArrayLength(aExecArr)-1 do begin if IsUninstaller() = false then begin // If app dir already exists while installing, abort add if (Pos(pathdir[d], aExecArr[i]) > 0) then abort; end else begin // If app dir exists and = what we originally set, then delete at uninstall if aExecArr[i] = 'SET PATH=%PATH%;' + pathdir[d] then aExecArr[i] := ''; end; end; end; // If app dir not found, or autoexec.bat didn't exist, then (create and) append to current path if IsUninstaller() = false then begin SaveStringToFile(aExecFile, #13#10 + 'SET PATH=%PATH%;' + pathdir[d], True); // If uninstalling, write the full autoexec out end else begin SaveStringsToFile(aExecFile, aExecArr, False); end; end; // Write file to flag modifypath was selected // Workaround since IsTaskSelected() cannot be called at uninstall and AppName and AppId cannot be "read" in Code section if IsUninstaller() = false then SaveStringToFile(ExpandConstant('{app}') + '\uninsTasks.txt', WizardSelectedTasks(False), False); end; end; procedure CurStepChanged(CurStep: TSetupStep); begin if CurStep = ssPostInstall then if IsTaskSelected('modifypath') then ModPath(); end; procedure CurUninstallStepChanged(CurUninstallStep: TUninstallStep); var appdir: String; selectedTasks: String; begin appdir := ExpandConstant('{app}') if CurUninstallStep = usUninstall then begin if LoadStringFromFile(appdir + '\uninsTasks.txt', selectedTasks) then if Pos('modifypath', selectedTasks) > 0 then ModPath(); DeleteFile(appdir + '\uninsTasks.txt') end; end; function NeedRestart(): Boolean; begin if IsTaskSelected('modifypath') and not UsingWinNT() then begin Result := True; end else begin Result := False; end; end;