profilesafe: Enhancements to BackupFileHelper

Added helper class to allow easy creation/deployment
of backups of a file. It works like a 'stack' of backups,
supports easy add/remove/delete of last entry (LIFO).
Added some work top allow opening dialogs in DeInit
under linux.

Change-Id: Idacec97ec2f097af9bd22a8a67b410c7677d17f1

1 files changed, 14 insertions, 0 deletions

diff --git a/include/comphelper/backupfilehelper.hxx b/include/comphelper/backupfilehelper.hxx
index 3061254615ae..f407d2b8815c 100644
--- a/include/comphelper/backupfilehelper.hxx
+++ b/include/comphelper/backupfilehelper.hxx
@@ -14,6 +14,7 @@
 
 #include <comphelper/comphelperdllapi.h>
 #include <rtl/ustring.hxx>
+#include <osl/file.hxx>
 
 namespace comphelper
 {
@@ -51,6 +52,15 @@ namespace comphelper
         osl::File           maBaseFile;
         bool                mbBaseFileIsOpen;
 
+        // internal flag if _exit() was called already - a hint to evtl.
+        // not create copies of potentially not well-defined data. This
+        // may be used in destructors of static instances - which unfortunately
+        // get called on WNT but not on linux. Thus I thought about encapsulating
+        // in some '#ifdefs', but it's just more safe to always do it and
+        // allows to add a SAL_WARN when one of these destructors is called
+        // after _exit()
+        static bool         mbExitWasCalled;
+
         // internal upper limit (max) of allowed backups
         static sal_uInt16   mnMaxAllowedBackups;
 
@@ -69,6 +79,10 @@ namespace comphelper
          */
         BackupFileHelper(const OUString& rBaseURL, sal_uInt16 nNumBackups = 5);
 
+        // allow to set flag when app had to call _exit()
+        static void setExitWasCalled();
+        static bool getExitWasCalled();
+
         /** tries to create a new backup, if there is none yet, or if the
          *  last differs from the base file. It will then put a new verion
          *  on the 'stack' of copies and evtl. delete the oldest backup.