reactos操作系统实现(60)

在拷贝文件到磁盘之前，需要把压缩包的文件解压，然后才能拷贝文件到安装目录里，它的代码如下：

#001  static PAGE_NUMBER

#002  PrepareCopyPage(PINPUT_RECORD Ir)

#003  {

#004      HINF InfHandle;

#005      WCHAR PathBuffer[MAX_PATH];

#006      INFCONTEXT CabinetsContext;

#007      ULONG InfFileSize;

#008      PWCHAR KeyValue;

#009      UINT ErrorLine;

#010      PVOID InfFileData;

#011 

#012      MUIDisplayPage(PREPARE_COPY_PAGE);

#013 

 

创建一个文件队列。

#014      /* Create the file queue */

#015      SetupFileQueue = SetupOpenFileQueue();

#016      if (SetupFileQueue == NULL)

#017      {

#018          MUIDisplayError(ERROR_COPY_QUEUE, Ir, POPUP_WAIT_ENTER);

#019          return(QUIT_PAGE);

#020      }

#021 

 

添加公共文件到安装INF文件，并且创建前面选择的目录，然后还需要创建目录下面所有的子目录。

#022      if (!PrepareCopyPageInfFile(SetupInf, NULL, Ir))

#023      {

#024          return QUIT_PAGE;

#025      }

#026 

 

查找Cabinets段的配置。

#027      /* Search for the 'Cabinets' section */

#028      if (!SetupFindFirstLineW (SetupInf, L"Cabinets", NULL, &CabinetsContext))

#029      {

#030          return FILE_COPY_PAGE;

#031      }

#032 

 

枚举目录里所有Cabinets段的文件。

#033      /*

#034      * Enumerate the directory values in the 'Cabinets'

#035      * section and parse their inf files.

#036      */

#037      do

#038      {

#039          if (!INF_GetData (&CabinetsContext, NULL, &KeyValue))

#040              break;

#041 

#042          wcscpy(PathBuffer, SourcePath.Buffer);

#043          wcscat(PathBuffer, L"//");

#044          wcscat(PathBuffer, KeyValue);

#045 

#046  #ifdef __REACTOS__

#047          CabinetInitialize();

#048          CabinetSetEventHandlers(NULL, NULL, NULL);

#049          CabinetSetCabinetName(PathBuffer);

#050 

#051          if (CabinetOpen() == CAB_STATUS_SUCCESS)

#052          {

#053              DPRINT("Cabinet %S/n", CabinetGetCabinetName());

#054 

#055              InfFileData = CabinetGetCabinetReservedArea(&InfFileSize);

#056              if (InfFileData == NULL)

#057              {

#058                  MUIDisplayError(ERROR_CABINET_SCRIPT, Ir, POPUP_WAIT_ENTER);

#059                  return QUIT_PAGE;

#060              }

#061          }

#062          else

#063          {

#064              DPRINT("Cannot open cabinet: %S./n", CabinetGetCabinetName());

#065              MUIDisplayError(ERROR_CABINET_MISSING, Ir, POPUP_WAIT_ENTER);

#066              return QUIT_PAGE;

#067          }

#068 

#069          InfHandle = INF_OpenBufferedFileA((CHAR*) InfFileData,

#070                                            InfFileSize,

#071                                            (const CHAR*) NULL,

#072                                            INF_STYLE_WIN4,

#073                                            &ErrorLine);

#074 

#075          if (InfHandle == INVALID_HANDLE_VALUE)

#076          {

#077              MUIDisplayError(ERROR_INVALID_CABINET_INF, Ir, POPUP_WAIT_ENTER);

#078              return QUIT_PAGE;

#079          }

#080 

#081          CabinetCleanup();

#082 

 

把需要拷贝的文件添加到安装列表。

#083          if (!PrepareCopyPageInfFile(InfHandle, KeyValue, Ir))

#084          {

#085              return QUIT_PAGE;

#086          }

#087  #endif

#088      } while (SetupFindNextLine (&CabinetsContext, &CabinetsContext));

#089 

#090      return FILE_COPY_PAGE;

#091  }

 

上面这个函数，实现了安装文件列表的建立，也就是根据不同的机器，不同的选择条件来选择不同的文件安装。