// read file property in core.xml, find out the creator, datatime...
// read [content_types].xml, find out the total file contains in the zip.
// read _rels folder, find out the files relationship, find out the child of objects.
// .rels contains define the ocreproperties.
public EPCDataView readEPCFile(String epcPathFile)
{
// must has [content_Types].xml
// /_rels/.rels must contain at least the metadata/core-properties and target. which resqml example doesnt' following.
// core properties should contains creator, created, version description, id, title
Dictionary <string, EPCObject> TopObjectList = new Dictionary <string, EPCObject>();
List <EPCObject> listObjects = new List <EPCObject>();
EPCCoreProperty epcCore = new EPCCoreProperty();
List <KeyValuePair <String, EPCObject> > parentChild = new List <KeyValuePair <String, EPCObject> >();
try
{
using (ZipPackage package = (ZipPackage)Package.Open(epcPathFile, FileMode.Open, FileAccess.Read))
{
PackageRelationshipCollection packageRels = package.GetRelationships();
//package Rels must contains id "CoreProperties" property. getTargetUri directory.
String sourceURI = "";
String coreURI = getCorePropertyURI(packageRels, ref sourceURI);
PackagePartCollection packageParts = package.GetParts();
foreach (PackagePart packagepart in packageParts)
{
// match the coreURI.
// find the coreProperty
if ((packagepart.Uri != null) && (packagepart.Uri.Equals(sourceURI + coreURI)))
{
epcCore.Creator = packagepart.Package.PackageProperties.Creator;
epcCore.Created = packagepart.Package.PackageProperties.Created;
epcCore.Version = packagepart.Package.PackageProperties.Version;
epcCore.Description = packagepart.Package.PackageProperties.Description;
epcCore.Identifier = packagepart.Package.PackageProperties.Identifier;
epcCore.Keywords = packagepart.Package.PackageProperties.Keywords;
epcCore.Title = packagepart.Package.PackageProperties.Title;
}
else
{
// create each epcobject for package part
if (isPart(packagepart))
{
EPCObject epcObject = new EPCObject();
String epcContentType = "";
String version = "";
String epcObjectType = "";
EPCPartValidator.parseContentType(packagepart.ContentType, ref epcContentType, ref version, ref epcObjectType);
epcObject.EpcContentType = epcContentType;
epcObject.EPCObjectType = epcObjectType;
epcObject.SchemaVersion = version;
epcObject.PackageFile = epcPathFile;
epcObject.EpcFileName = this.getfilename(packagepart.Uri.ToString());
epcObject.Uuid = this.getuuid(packagepart.Uri.ToString());
epcObject.Uri = packagepart.Uri;
listObjects.Add(epcObject);
//get rest relationship items
PackageRelationshipCollection partRels = null;
try
{
if (packagepart != null)
{
partRels = packagepart.GetRelationships();
}
}
catch (Exception e)
{
Console.WriteLine("warning : " + e.Message);
}
if (partRels != null)
{
// create pair key for relationships parent and child
foreach (PackageRelationship partsRel in partRels)
{
EPCRelationshipType epcrelType = EPCPartValidator.getRelationshipType(partsRel.RelationshipType);
// conver the target and source into the parent and child table.
if ((epcrelType == EPCRelationshipType.destinationObject) ||
(epcrelType == EPCRelationshipType.mlToExternalPartProxy) ||
(epcrelType == EPCRelationshipType.destinationMedia) ||
(epcrelType == EPCRelationshipType.externalResource) ||
(epcrelType == EPCRelationshipType.chunkedPart)
)
{
string name = getfilename(packagepart.Uri.ToString());
//string childname = getfilename(partsRel.TargetUri.ToString());
EPCObject obj = new EPCObject();
obj.TargetMode = partsRel.TargetMode;;
obj.EpcFileName = partsRel.TargetUri.ToString();
if ((obj.TargetMode == TargetMode.External) && (obj.EpcFileName.EndsWith(".h5")))
{
obj.HDF5 = true;
epcObject.EpcFileName = obj.EpcFileName;
epcObject.HDF5 = true;
}
KeyValuePair <string, EPCObject> pair = new KeyValuePair <string, EPCObject>(name, obj);
if (!isDuplicated(parentChild, pair))
{
parentChild.Add(pair);
}
//else
//Console.WriteLine("source already add in. skip ...");
}
if ((epcrelType == EPCRelationshipType.sourceObject) ||
(epcrelType == EPCRelationshipType.extenalPartProxyToMI) ||
(epcrelType == EPCRelationshipType.sourceMedia))
{
string name = getfilename(partsRel.TargetUri.ToString());
string childname = getfilename(packagepart.Uri.ToString());
EPCObject obj = new EPCObject();
obj.TargetMode = partsRel.TargetMode;;
obj.EpcFileName = childname;
KeyValuePair <string, EPCObject> pair = new KeyValuePair <string, EPCObject>(name, obj);
if (!isDuplicated(parentChild, pair))
{
parentChild.Add(pair);
}
//else
//Console.WriteLine("source already add in. skip ...");
}
}
}
}
}
}
//sort the hierachy from the pair
listObjects.Sort(new EPCObjectComparer());
TopObjectList = sortHierarchy(parentChild, listObjects);
// assign to dataviewer.
EPCDataView dataviewer = new EPCDataView();
dataviewer.TopObjectList = TopObjectList;
dataviewer.ListObjects = listObjects;
dataviewer.EpcCoreProperty = epcCore;
return(dataviewer);
}
}catch (Exception e)
{
throw new Exception(String.Format("the file is not validate EPC file : {0} ", e.Message));
}
}
