diff -r 27cf35f95864 -r b8d81fa19e7d buildframework/helium/sf/python/blockspackager/lib/packager/io.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/buildframework/helium/sf/python/blockspackager/lib/packager/io.py	Sun Oct 10 15:22:15 2010 +0300
@@ -0,0 +1,143 @@
+#============================================================================ 
+#Name        : io.py 
+#Part of     : Helium 
+
+#Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+#All rights reserved.
+#This component and the accompanying materials are made available
+#under the terms of the License "Eclipse Public License v1.0"
+#which accompanies this distribution, and is available
+#at the URL "http://www.eclipse.org/legal/epl-v10.html".
+#
+#Initial Contributors:
+#Nokia Corporation - initial contribution.
+#
+#Contributors:
+#
+#Description:
+#===============================================================================
+import xml.dom.minidom
+import logging
+from Blocks.Packaging.BuildData import BdFile, PlainBuildData
+logger = logging.getLogger('io')
+
+class BdFileSerializer:
+    """ Class used to serialize or deserialize the DBFile """
+    def __init__(self, bdfile=None):
+        self.bdfile = bdfile 
+
+    def toXml(self):
+        logger.debug("Serializing DBFile.")
+        document = xml.dom.minidom.Document()
+        component = document.createElement('bdfile')
+        component.setAttribute('path', self.bdfile.getPath())
+        if self.bdfile.variantType  is not None:
+            component.setAttribute('variantType', self.bdfile.variantType)
+        if self.bdfile.variantPlatform is not None:
+            component.setAttribute('variantPlatform', self.bdfile.variantPlatform)
+        # Owner reqs
+        ownerReqs = document.createElement('ownerRequirements')
+        for path in self.bdfile.ownerRequirements:
+            req = document.createElement("ownerRequirement")
+            req.setAttribute('path', path)
+            ownerReqs.appendChild(req)
+        component.appendChild(ownerReqs)
+        # source Requirements
+        srcReqs = document.createElement('sourceRequirements')
+        for path in self.bdfile.sourceRequirements:
+            req = document.createElement("sourceRequirement")
+            req.setAttribute('path', path)
+            srcReqs.appendChild(req)
+        component.appendChild(srcReqs)
+        return component.toxml()
+
+    def fromXml(self, data):
+        logger.debug("Deserializing DBFile.")
+        node = xml.dom.minidom.parseString(data).childNodes[0]
+        if self.bdfile == None:
+            self.bdfile = BdFile(node.getAttribute('path'))
+        
+        self.bdfile.path = node.getAttribute('path')
+        self.bdfile.variantPlatform = node.getAttribute('variantPlatform')
+        self.bdfile.variantType = node.getAttribute('variantType')
+        for src in node.getElementsByTagName('ownerRequirements')[0].getElementsByTagName('ownerRequirement'):
+            self.bdfile.ownerRequirements.append(src.getAttribute('path'))
+        for src in node.getElementsByTagName('sourceRequirements')[0].getElementsByTagName('sourceRequirement'):
+            self.bdfile.sourceRequirements.append(src.getAttribute('path'))
+        return self.bdfile
+        
+class BuildDataSerializer:
+    """ Class used to serialize or deserialize the plain build data """
+    def __init__(self, builddata=None):
+        self.builddata = builddata
+        if  self.builddata is None:
+            self.builddata = PlainBuildData()
+            
+    def toXml(self):
+        logger.debug("Serializing PlainBuildData.")
+        document = xml.dom.minidom.Document()
+        component = document.createElement('component')
+        component.setAttribute('name', self.builddata.getComponentName())
+        component.setAttribute('version', self.builddata.getComponentVersion())
+        # sources
+        sources = document.createElement('sources')
+        sources.setAttribute('root', self.builddata.getSourceRoot())        
+        for path in self.builddata.getSourceFiles():
+            source = document.createElement("source")
+            source.setAttribute('path', path)
+            sources.appendChild(source)
+        component.appendChild(sources)
+        # targets
+        targets = document.createElement('targets')        
+        targets.setAttribute('root', self.builddata.getTargetRoot())
+        for path in self.builddata.targetFiles.keys():
+            target = document.createElement("target")
+            target.setAttribute('path', path)
+            if self.builddata.targetFiles[path] is not None:
+                target.appendChild(document.importNode(xml.dom.minidom.parseString(BdFileSerializer(self.builddata.targetFiles[path]).toXml()).childNodes[0], deep=1))
+            targets.appendChild(target)        
+        component.appendChild(targets)
+        return component.toxml()
+
+    def fromXml(self, data):
+        logger.debug("Deserializing PlainBuildData.")
+        node = xml.dom.minidom.parseString(data).childNodes[0]
+        self.builddata.setComponentName(node.getAttribute('name'))
+        self.builddata.setComponentVersion(node.getAttribute('version'))
+        self.builddata.setSourceRoot(node.getElementsByTagName('sources')[0].getAttribute('root'))
+        self.builddata.setTargetRoot(node.getElementsByTagName('targets')[0].getAttribute('root'))
+        files = []
+        for src in node.getElementsByTagName('sources')[0].getElementsByTagName('source'):
+            files.append(src.getAttribute('path'))
+        self.builddata.addSourceFiles(files)
+
+        files = []
+        for target in node.getElementsByTagName('targets')[0].getElementsByTagName('target'):
+            files.append(target.getAttribute('path'))
+        self.builddata.addTargetFiles(files)
+        for target in node.getElementsByTagName('targets')[0].getElementsByTagName('target'):
+            for bdfile in target.getElementsByTagName('bdfile'):
+                self.builddata.addDeliverable(BdFileSerializer().fromXml(bdfile.toxml()))
+        return self.builddata
+
+
+class BuildDataMerger:
+    """ Class used to merge contents of build data """
+    def __init__(self, output):
+        self.output = output
+
+    def merge(self, bd):
+        """ Merge the content of bd into output. """
+        if bd.getComponentName() != self.output.getComponentName():
+            raise Exception("Trying to merger two different components (different name)")
+        if bd.getComponentVersion() != self.output.getComponentVersion():
+            raise Exception("Trying to merger two different components (different version)")        
+        if bd.getSourceRoot() != self.output.getSourceRoot():
+            raise Exception("Trying to merger two different components (different source root)")
+        if bd.getTargetRoot() != self.output.getTargetRoot():
+            raise Exception("Trying to merger two different components (different target root)")
+        self.output.addSourceFiles(bd.getSourceFiles())
+        self.output.addTargetFiles(bd.getTargetFiles())
+        for dep in bd.getDependencies():
+            self.output.addDeliverable(dep)
+        return self.output