profilesafe: Collect copies in single *.pack file

Enhanced helper classes for BackupFileHelper to
allow writing a stack of rescued last valid
configuration files to a single file package.
Added configuration values for enabling this and
defining the number of entries, added max entry
limitation. Using FileSize and CRC32 now to dectect
if config file did change. To make this work I added
sorting to writing the configuration so that with no
change the same configuration file is written.
Use std::vector for better mem performance for sorting,
defined static const for buffer size of manipulation,
prepare inflate/deflate usages. Fixes to setPos, warnings

Change-Id: Ib286e2a3f25b0085a1e3ae4f50c9ff1ff3a5dcf5

1 files changed, 23 insertions, 15 deletions

diff --git a/include/comphelper/backupfilehelper.hxx b/include/comphelper/backupfilehelper.hxx
index f407d2b8815c..2c6cc25ded23 100644
--- a/include/comphelper/backupfilehelper.hxx
+++ b/include/comphelper/backupfilehelper.hxx
@@ -15,6 +15,7 @@
 #include <comphelper/comphelperdllapi.h>
 #include <rtl/ustring.hxx>
 #include <osl/file.hxx>
+#include <memory>
 
 namespace comphelper
 {
@@ -45,12 +46,11 @@ namespace comphelper
     {
     private:
         // internal data
-        const OUString&     mrBaseURL;
-        sal_uInt16          mnNumBackups;
-        OUString            maBase;
-        OUString            maExt;
-        osl::File           maBaseFile;
-        bool                mbBaseFileIsOpen;
+        const OUString&                 mrBaseURL;
+        sal_uInt16                      mnNumBackups;
+        OUString                        maBase;
+        OUString                        maName;
+        OUString                        maExt;
 
         // internal flag if _exit() was called already - a hint to evtl.
         // not create copies of potentially not well-defined data. This
@@ -67,6 +67,10 @@ namespace comphelper
     public:
         /** Constructor to handle Backups of the given file
          *
+         *  @param  rxContext
+         *          ComponentContext to use internally; needs to be handed
+         *          over due to usages after DeInit() and thus no access
+         *          anymore using comphelper::getProcessComponentContext()
          *  @param  rBaseURL
          *          URL to an existing file that needs to be backed up
          *
@@ -77,12 +81,21 @@ namespace comphelper
          *          It is used in tryPush() and tryPop() calls to cleanup/
          *          reduce the number of existing backups
          */
-        BackupFileHelper(const OUString& rBaseURL, sal_uInt16 nNumBackups = 5);
+        BackupFileHelper(
+            const OUString& rBaseURL,
+            sal_uInt16 nNumBackups = 5);
 
-        // allow to set flag when app had to call _exit()
+        // allow to set static global flag when app had to call _exit()
         static void setExitWasCalled();
         static bool getExitWasCalled();
 
+        // static helper to read config values - these are derived from
+        // soffice.ini due to cui not being available in all cases. The
+        // boolean SecureUserConfig is returned.
+        // Default for SecureUserConfig is false
+        // Default for SecureUserConfigNumCopies is 0 (zero)
+        static bool getSecureUserConfig(sal_uInt16& rnSecureUserConfigNumCopies);
+
         /** 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.
@@ -113,14 +126,9 @@ namespace comphelper
 
     private:
         // internal helper methods
-        rtl::OUString getName(sal_uInt16 n);
-        bool firstExists();
-        void pop();
-        void push();
-        bool isDifferentOrNew();
-        bool equalsBase(osl::File& rLastFile);
         bool splitBaseURL();
-        bool baseFileOpen();
+        bool baseFileExists();
+        rtl::OUString getName();
     };
 }