1 files changed, 20 insertions, 1 deletions

diff --git a/libopie2/opiepim/backend/ocontactaccessbackend_xml.h b/libopie2/opiepim/backend/ocontactaccessbackend_xml.h
index 50ea329..12a75ba 100644
--- a/libopie2/opiepim/backend/ocontactaccessbackend_xml.h
+++ b/libopie2/opiepim/backend/ocontactaccessbackend_xml.h
@@ -1,171 +1,182 @@
 /*
  * XML Backend for the OPIE-Contact Database.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
          *This program is free software; you can redistribute it and/or
          *modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo: XML-Backend: Automatic reload if something was changed...
  *
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.4  2002/10/16 10:52:40  eilers
+ * Added some docu to the interface and now using the cache infrastucture by zecke.. :)
+ *
  * Revision 1.3  2002/10/14 16:21:54  eilers
  * Some minor interface updates
  *
  * Revision 1.2  2002/10/07 17:34:24  eilers
  * added OBackendFactory for advanced backend access
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  *
  */
 
 #ifndef _OContactAccessBackend_XML_
 #define _OContactAccessBackend_XML_
 
 #include <qasciidict.h>
 #include <qdatetime.h>
 #include <qfile.h>
 #include <qfileinfo.h>
 #include <qregexp.h>
 #include <qarray.h>
 
 #include <qpe/global.h>
 
 #include <opie/xmltree.h>
 #include "ocontactaccessbackend.h"
 #include "ocontactaccess.h"
 
 #include <stdlib.h>
 #include <errno.h>
 
 using namespace Opie;
 
 /* the default xml implementation */
 class OContactAccessBackend_XML : public OContactAccessBackend {
  public:
-        OContactAccessBackend_XML ( QString appname, QString filename = 0l )
+        OContactAccessBackend_XML ( QString appname, QString filename = 0l ):
+                m_changed( false )
                 {
                         m_appName = appname;
                         
                         /* Set journalfile name ... */
                         m_journalName = getenv("HOME");
                         m_journalName +="/.abjournal" + appname;
                         
                         /* Expecting to access the default filename if nothing else is set */
                         if ( filename.isEmpty() ){
                                 m_fileName = Global::applicationFileName( "addressbook","addressbook.xml" );
                         } else
                                 m_fileName = filename;
                         
                         /* Load Database now */
                         load ();
                 }
         
         bool save() {
+
+                if ( !m_changed )
+                        return true;
+
                 QString strNewFile = m_fileName + ".new";
                 QFile f( strNewFile );
                 if ( !f.open( IO_WriteOnly|IO_Raw ) )
                         return false;
                 
                 int total_written;
                 QString out;
                 out = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><!DOCTYPE Addressbook ><AddressBook>\n"
                         " <Groups>\n"
                         " </Groups>\n"
                         " <Contacts>\n";
                 //QValueList<Contact>::iterator it;
                 QValueListConstIterator<OContact> it;
                 for ( it = m_contactList.begin(); it != m_contactList.end(); ++it ) {
                         out += "<Contact ";
                         (*it).save( out );
                         out += "/>\n";
                         QCString cstr = out.utf8();
                         total_written = f.writeBlock( cstr.data(), cstr.length() );
                         if ( total_written != int(cstr.length()) ) {
                                 f.close();
                                 QFile::remove( strNewFile );
                                 return false;
                         }
                         out = "";
                 }
                 out += " </Contacts>\n</AddressBook>\n";
                 
                 QCString cstr = out.utf8();
                 total_written = f.writeBlock( cstr.data(), cstr.length() );
                 if ( total_written != int( cstr.length() ) ) {
                         f.close();
                         QFile::remove( strNewFile );
                         return false;
                 }
                 f.close();
                 
                 // move the file over, I'm just going to use the system call
                 // because, I don't feel like using QDir.
                 if ( ::rename( strNewFile.latin1(), m_fileName.latin1() ) < 0 ) {
                         qWarning( "problem renaming file %s to %s, errno: %d",
                                   strNewFile.latin1(), m_journalName.latin1(), errno );
                         // remove the tmp file...
                         QFile::remove( strNewFile );
                 }
                 
                 /* The journalfile should be removed now... */
                 removeJournal();
+
+                m_changed = false;
                 return true;
         }
         
         bool load () {
                 m_contactList.clear();
                 
                 /* Load XML-File and journal if it exists */
                 if ( !load ( m_fileName, false ) )
                         return false;
                 /* The returncode of the journalfile is ignored due to the
                  * fact that it does not exist when this class is instantiated !
                  * But there may such a file exist, if the application crashed.
                  * Therefore we try to load it to get the changes before the #
                  * crash happened...
                  */
                 load (m_journalName, true);
                 
                 return true;
         }
 
         void clear () {
                 m_contactList.clear();
+                m_changed = false;
 
         }
         
         bool wasChangedExternally()
                 {
                         QFileInfo fi( m_fileName );
                         
                         QDateTime lastmod = fi.lastModified ();
                         
                         return (lastmod != m_readtime);
                 }
         
         QArray<int> allRecords() const {
                 QArray<int> uid_list( m_contactList.count() );
                 
                 uint counter = 0; 
                 QValueListConstIterator<OContact> it;
                 for( it = m_contactList.begin(); it != m_contactList.end(); ++it ){
                         uid_list[counter++] = (*it).uid();
                 }
                 
                 return ( uid_list );
         }
         
@@ -254,73 +265,80 @@ class OContactAccessBackend_XML : public OContactAccessBackend {
         
         bool hasQuerySettings (uint querySettings) const
                 {
                         /* OContactAccess::IgnoreCase may be added with one
                          * of the other settings, but never used alone.
                          * The other settings are just valid alone...
                          */
                         switch ( querySettings & ~OContactAccess::IgnoreCase ){
                         case OContactAccess::RegExp:
                                 return ( true );
                         case OContactAccess::WildCards:
                                 return ( true );
                         case OContactAccess::ExactMatch:
                                 return ( true );
                         default:
                                 return ( false );
                         }
                 }
         
         bool add ( const OContact &newcontact )
                 {
                         //qWarning("odefaultbackend: ACTION::ADD");
                         updateJournal (newcontact, OContact::ACTION_ADD);
                         addContact_p( newcontact );
+                        
+                        m_changed = true;
+
                         return true;
                 }
         
         bool replace ( const OContact &contact )
                 {
+                        m_changed = true;
+
                         bool found = false;
                         
                         QValueListIterator<OContact> it;
                         for( it = m_contactList.begin(); it != m_contactList.end(); ++it ){
                                 if ( (*it).uid() == contact.uid() ){
                                         found = true;
                                         break;
                                 }
                         }
                         if (found) {
                                 updateJournal (contact, OContact::ACTION_REPLACE);
                                 m_contactList.remove (it);
                                 m_contactList.append (contact);
                                 return true;
                         } else
                                 return false;
                 }
         
         bool remove ( int uid )
                 {
+                        m_changed = true;
+
                         bool found = false;
                         QValueListIterator<OContact> it;
                         for( it = m_contactList.begin(); it != m_contactList.end(); ++it ){
                                 if ((*it).uid() == uid){
                                         found = true;
                                         break;
                                 }
                         }
                         if (found) {
                                 updateJournal ( *it, OContact::ACTION_REMOVE);
                                 m_contactList.remove (it);
                                 return true;
                         } else
                                 return false;
                 }
         
         bool reload(){
                 /* Reload is the same as load in this implementation */
                 return ( load() );
         }
         
  private:
         void addContact_p( const OContact &newcontact ){
                 m_contactList.append (newcontact);
@@ -532,32 +550,33 @@ class OContactAccessBackend_XML : public OContactAccessBackend {
                 // get a XML-File which is readable by our parser.
                 // This is just a cheat, but better than rewrite the parser.
                 if ( created ){
                         buf = "<Contacts>";
                         QCString cstr = buf.utf8();
                         f.writeBlock( cstr.data(), cstr.length() );
                 }
                 
                 buf = "<Contact ";
                 cnt.save( buf );
                 buf += " action=\"" + QString::number( (int)action ) + "\" ";
                 buf += "/>\n";
                 QCString cstr = buf.utf8();
                 f.writeBlock( cstr.data(), cstr.length() );
         }
         
         void removeJournal()
                 {
                         QFile f ( m_journalName );
                         if ( f.exists() )
                                 f.remove();
                 }
         
  protected:
+        bool m_changed;
         QString m_journalName;
         QString m_fileName;
         QString m_appName;
         QValueList<OContact> m_contactList;
         QDateTime m_readtime;
 };
 
 #endif