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Inno Setup:刪除以前版本安裝的文件

[英]Inno Setup: Removing files installed by previous version

我正在使用Inno Setup為 Windows 打包 Java 應用程序; 應用程序樹是這樣的:

|   MyApp.jar
\---lib
    |   dependency-A-1.2.3.jar
    |   dependency-B-2.3.4.jar
    |   dependency-Z-x.y.z.jar

我使用Ant事先准備好整個樹(所有文件和文件夾),包括lib目錄(使用*.jar通配符復制依賴項),然后我只需調用ISCC

[Files]
Source: "PreparedFolder\*"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs

現在,每次用戶升級應用程序時,我都需要清理lib目錄,因為我想刪除任何過時的依賴項。 我可以將以下部分添加到我的.iss文件中:

[InstallDelete]
{app}\lib\*.jar

但我感覺不安全,因為如果用戶決定將應用程序安裝在包含非空lib子文件夾(罕見但並非不可能)的現有文件夾中,則升級時可能會刪除一些用戶文件。

有沒有最佳實踐來避免這種麻煩? 其他安裝人員會解決這些問題嗎? 謝謝。

安裝前可以先卸載之前的版本:


如果您無法進行完全卸載,則必須實施部分卸載。

理想的做法是對卸載程序日志 ( unins000.dat ) 進行逆向工程,僅將安裝提取到lib子文件夾並處理(撤消)它們。 但由於這是一個未記錄的二進制文件,因此可能很難做到。


如果您在[Files]部分中維護要安裝的文件的明確列表,例如

[Files]
Source: "lib\dependency-A-1.2.3.jar"; Dest: "{app}\lib"
Source: "lib\dependency-B-2.3.4.jar"; Dest: "{app}\lib"

然后每當依賴項發生更改時,將以前的版本移動到[InstallDelete]部分:

[Files]
Source: "lib\dependency-A-1.3.0.jar"; Dest: "{app}"
Source: "lib\dependency-B-2.3.4.jar"; Dest: "{app}"

[InstallDelete]
{app}\lib\dependency-A-1.2.3.jar

如果您使用通配符安裝依賴項,

[Files]
Source: "lib\*.jar"; Dest: "{app}\lib"

而且您無法對卸載程序日志進行反向工程,您必須通過自己的方式復制其功能。

您可以使用預處理器生成包含已安裝依賴項的文件。 將該文件安裝到{app}文件夾並在安裝前處理該文件。

[Files]
Source: "MyApp.jar"; DestDir: "{app}"
Source: "lib\*.jar"; DestDir: "{app}\lib"

#define ProcessFile(Source, FindResult, FindHandle) \
    Local[0] = FindGetFileName(FindHandle), \
    Local[1] = Source + "\\" + Local[0], \
    Local[2] = FindNext(FindHandle), \
    "'" + Local[0] + "'#13#10" + \
        (Local[2] ? ProcessFile(Source, Local[2], FindHandle) : "")

#define ProcessFolder(Source) \
    Local[0] = FindFirst(Source + "\\*.jar", faAnyFile), \
    ProcessFile(Source, Local[0], Local[0])

#define DepedenciesToInstall ProcessFolder("lib")
#define DependenciesLog "{app}\dependencies.log"

[UninstallDelete]
Type: files; Name: "{#DependenciesLog}"
[Code]

procedure CurStepChanged(CurStep: TSetupStep);
var
  AppPath, DependenciesLogPath: string;
  Dependencies: TArrayOfString;
  Count, I: Integer;
begin
  DependenciesLogPath := ExpandConstant('{#DependenciesLog}');

  if CurStep = ssInstall then
  begin
    // If dependencies log already exists, 
    // remove the previously installed dependencies
    if LoadStringsFromFile(DependenciesLogPath, Dependencies) then
    begin
      Count := GetArrayLength(Dependencies);
      Log(Format('Loaded %d dependencies, deleting...', [Count]));
      for I := 0 to Count - 1 do
        DeleteFile(ExpandConstant('{app}\lib\' + Dependencies[I]));
    end;
  end
    else
  if CurStep = ssPostInstall then
  begin
    // Now that the app folder already exists,
    // save dependencies log (to be processed by future upgrade)
    if SaveStringToFile(DependenciesLogPath, {#DepedenciesToInstall}, False) then
    begin
      Log('Created dependencies log');
    end
      else
    begin
      Log('Failed to create dependencies log');
    end;
  end;
end;

另一種方法是刪除安裝文件夾中最新安裝程序未安裝的所有文件。

最簡單的解決方案是在安裝之前刪除安裝文件夾中的所有文件。

您可以為此使用[InstallDelete]部分 但是,如果您在安裝文件夾中有一些帶有配置的文件夾/文件,則不允許您排除它們。

您可以改為編寫 Pascal 腳本。 請參閱Inno Setup - 刪除除數據子目錄之外的整個應用程序文件夾 您可以從我對CurStepChanged(ssInstall)事件函數的該問題的回答中調用DelTreeExceptSavesDir函數:

procedure CurStepChanged(CurStep: TSetupStep);
begin
  if CurStep = ssInstall then
  begin
    DelTreeExceptSavesDir(WizardDirValue); 
  end;
end;

如果您真的只想刪除過時的文件,以避免刪除和重新創建現有文件,您可以使用預處理器生成要為 Pascal 腳本安裝的文件列表,並使用它來僅刪除真正過時的文件。

#pragma parseroption -p-

#define FileEntry(DestDir) \
    "  FilesNotToBeDeleted.Add('" + LowerCase(DestDir) + "');\n"

#define ProcessFile(Source, Dest, FindResult, FindHandle) \
    FindResult \
        ? \
            Local[0] = FindGetFileName(FindHandle), \
            Local[1] = Source + "\\" + Local[0], \
            Local[2] = Dest + "\\" + Local[0], \
            (Local[0] != "." && Local[0] != ".." \
                ? FileEntry(Local[2]) + \
                  (DirExists(Local[1]) ? ProcessFolder(Local[1], Local[2]) : "") \
                : "") + \
            ProcessFile(Source, Dest, FindNext(FindHandle), FindHandle) \
        : \
            ""

#define ProcessFolder(Source, Dest) \
    Local[0] = FindFirst(Source + "\\*", faAnyFile), \
    ProcessFile(Source, Dest, Local[0], Local[0])

#pragma parseroption -p+
[Code]

var
  FilesNotToBeDeleted: TStringList;

function InitializeSetup(): Boolean;
begin
  FilesNotToBeDeleted := TStringList.Create;
  FilesNotToBeDeleted.Add('\data');
  {#Trim(ProcessFolder('build\exe.win-amd64-3.6', ''))}
  FilesNotToBeDeleted.Sorted := True;

  Result := True;
end;

procedure DeleteObsoleteFiles(Path: string; RelativePath: string);
var
  FindRec: TFindRec;
  FilePath: string;
  FileRelativePath: string;
begin
  if FindFirst(Path + '\*', FindRec) then
  begin
    try
      repeat
        if (FindRec.Name <> '.') and (FindRec.Name <> '..') then
        begin
          FilePath := Path + '\' + FindRec.Name;
          FileRelativePath := RelativePath + '\' + FindRec.Name;
          if FindRec.Attributes and FILE_ATTRIBUTE_DIRECTORY <> 0 then
          begin
            DeleteObsoleteFiles(FilePath, FileRelativePath);
          end;

          if FilesNotToBeDeleted.IndexOf(Lowercase(FileRelativePath)) < 0 then
          begin
            if FindRec.Attributes and FILE_ATTRIBUTE_DIRECTORY <> 0 then
            begin
              if RemoveDir(FilePath) then
              begin
                Log(Format('Deleted obsolete directory %s', [FilePath]));
              end
                else
              begin
                Log(Format('Failed to delete obsolete directory %s', [FilePath]));
              end;
            end
              else
            begin
              if DeleteFile(FilePath) then
              begin
                Log(Format('Deleted obsolete file %s', [FilePath]));
              end
                else
              begin
                Log(Format('Failed to delete obsolete file %s', [FilePath]));
              end;
            end;
          end;
        end;
      until not FindNext(FindRec);
    finally
      FindClose(FindRec);
    end;
  end
    else
  begin
    Log(Format('Failed to list %s', [Path]));
  end;
end;

procedure CurStepChanged(CurStep: TSetupStep);
begin
  if CurStep = ssInstall then
  begin
    Log('Looking for obsolete files...');
    DeleteObsoleteFiles(WizardDirValue, '');
  end;
end;

試試這個希望它有效嗎?

[InstallDelete]
Type: filesandordirs; Name: "{app}\lib\dependency-A-1.2.3.jar"

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