/// <summary>
/// Parses the DAV result.
/// Note that it will only parse if the server status was 207.
/// There maybe error outputs on 4xx and 5xx but this will not parsed
/// by this class.
/// </summary>
/// <param name="request"></param>
/// <param name="response"></param>
/// <param name="uri"></param>
public DAVRequestResult(WebDAV request, HttpWebResponse response, Uri uri)
{
Request = request;
Items = new List<Item>();
Status = (ServerStatus)Enum.Parse(typeof(ServerStatus), response.StatusCode.ToString(), false);
StatusText = response.StatusDescription;
IsMultiState = Status == ServerStatus.MultiStatus;
_stream = new MemoryStream();
response.GetResponseStream().CopyTo(_stream);
// dispose
response.Dispose();
_stream.Seek(0, SeekOrigin.Begin);
if (_stream.Length == 0) return;
// A kingdom for normal DOMDocument support.
// Why not XDocument? XmlReader is faster and less resource hungry.
// A huge multitstatus would be first loaded to memory completely.
//
// This reader can only go forward. Read-* methods will cause
// to jump over elements. Hence we stop at the element and
// store the element name. Then wait for Text-Elements value
// to capture.
using(XmlReader reader = XmlReader.Create(_stream, null)) {
Item item = new Item();
var waitForResourceType = false;
var lastElementName = "";
var waitForLockScope = false;
var waitForLockType = false;
List<DAVLocking> lockingList = null;
List<PropertyState> propertyStateList = null;
PropertyState pItem = null;
DAVLocking litem = null;
while (reader.Read())
{
switch (reader.NodeType)
{
// look for special elements
case XmlNodeType.Element:
if (reader.NamespaceURI == XmlNamespaces.NsDav)
{
switch (reader.LocalName)
{
// DAV Elements
// Response
case Elements.Response:
// start a new item
// pItem must be set before d:prop in order to
// catch non-real properties such "href"
item = new Item();
propertyStateList = new List<PropertyState>();
pItem = new PropertyState();
break;
// Resource type
case Elements.Collection:
if (waitForResourceType)
{
item.ResourceType = ResourceType.Collection;
}
break;
// Lock
case Elements.LockEntry:
litem = new DAVLocking();
lockingList.Add(litem);
break;
case Elements.LockScope:
waitForLockScope = true;
break;
case Elements.LockType:
waitForLockType = true;
break;
case Elements.ExclusiveLocking:
if (waitForLockScope)
{
litem.Scope = DAVLocking.LockScope.Exclusive;
}
break;
case Elements.SharedLocking:
if (waitForLockScope)
{
litem.Scope = DAVLocking.LockScope.Shared;
}
break;
case Elements.WriteLocking:
if (waitForLockType)
{
litem.Type = DAVLocking.LockType.Write;
}
break;
case Elements.LockDiscovery:
///TODO
break;
// DAV Properties
case Elements.Properties:
// a pItem was already created before
break;
case Properties.ResourceType:
waitForResourceType = true;
break;
case Properties.SupportedLock:
lockingList = new List<DAVLocking>();
break;
default:
lastElementName = reader.LocalName;
break;
}
}
break;
// clean up
case XmlNodeType.EndElement:
if (reader.NamespaceURI == XmlNamespaces.NsDav)
{
switch (reader.LocalName)
{
// DAV Elements
case Elements.PropertyState:
// save to list and create a new one (which stays maybe temporary)
propertyStateList.Add(pItem);
pItem = new PropertyState();
break;
case Elements.Response:
// clean the list
// the HTTP Status is important
foreach (PropertyState state in propertyStateList)
{
if (state.Status == ServerStatus.OK)
{
item.Properties = state.Properties;
}
else
{
item.FailedProperties.Add(state);
}
}
// Close the item
Items.Add(item);
item = null;
// Reset the property state list
propertyStateList = null;
pItem = null;
break;
// Locking
case Elements.LockType:
waitForLockType = false;
break;
case Elements.LockScope:
waitForLockScope = false;
break;
// DAV Properties
case Properties.ResourceType:
waitForResourceType = false;
break;
case Properties.SupportedLock:
item.Locking = lockingList;
break;
}
}
break;
// Grap the text values
case XmlNodeType.Text:
// no whitespace please
if (reader.Value == null) continue;
// can't set in empty element
if (item == null) continue;
switch (lastElementName)
{
// DAV Elements
case Elements.Reference:
string _ref = Uri.UnescapeDataString(reader.Value);
pItem.Properties.Add(lastElementName, _ref);
pItem.Properties.Add(lastElementName + ".local", _ref.Trim('/').Split('/').Last());
break;
// Status element
case Elements.Status:
List<string> s = new List<string>(reader.Value.Split(' '));
s.RemoveAt(0);
pItem.Status = (ServerStatus)Enum.Parse(typeof(ServerStatus), s[0], false);
s.RemoveAt(0);
pItem.ServerStatusText = String.Join(" ", s.ToArray());
break;
// DAV Properties
case Properties.QuotaUsedBytes:
case Properties.QuotaAvailableBytes:
case Properties.GetContentLength:
pItem.Properties.Add(lastElementName, long.Parse(reader.Value));
break;
case Properties.DisplayName:
case Properties.GetContentLanguage:
case Properties.GetContentType:
case Properties.GetETag:
pItem.Properties.Add(lastElementName, reader.Value);
break;
case Properties.GetLastModified:
case Properties.CreationDate:
pItem.Properties.Add(lastElementName, DateTime.Parse(reader.Value));
break;
}
lastElementName = "";
break;
}
}
}
}
/// <summary>
/// Parses the DAV result.
/// Note that it will only parse if the server status was 207.
/// There maybe error outputs on 4xx and 5xx but this will not parsed
/// by this class.
/// </summary>
/// <param name="request"></param>
/// <param name="response"></param>
/// <param name="uri"></param>
public DAVRequestResult(WebDAV request, HttpWebResponse response, Uri uri)
{
Request = request;
Items = new List <Item>();
Status = (ServerStatus)Enum.Parse(typeof(ServerStatus), response.StatusCode.ToString(), false);
IsMultiState = Status == ServerStatus.MultiStatus;
_stream = new MemoryStream();
response.GetResponseStream().CopyTo(_stream);
// dispose
response.Dispose();
_stream.Seek(0, SeekOrigin.Begin);
if (_stream.Length == 0)
{
return;
}
// A kingdom for normal DOMDocument support.
// Why not XDocument? XmlReader is faster and less resource hungry.
// A huge multitstatus would be first loaded to memory completely.
//
// This reader can only go forward. Read-* methods will cause
// to jump over elements. Hence we stop at the element and
// store the element name. Then wait for Text-Elements value
// to capture.
using (XmlReader reader = XmlReader.Create(_stream, null)) {
Item item = new Item();
var waitForResourceType = false;
var lastElementName = "";
var waitForLockScope = false;
var waitForLockType = false;
List <DAVLocking> lockingList = null;
List <PropertyState> propertyStateList = null;
PropertyState pItem = null;
DAVLocking litem = null;
while (reader.Read())
{
switch (reader.NodeType)
{
// look for special elements
case XmlNodeType.Element:
if (reader.NamespaceURI == XmlNamespaces.NsDav)
{
switch (reader.LocalName)
{
// DAV Elements
// Response
case Elements.Response:
// start a new item
// pItem must be set before d:prop in order to
// catch non-real properties such "href"
item = new Item();
propertyStateList = new List <PropertyState>();
pItem = new PropertyState();
break;
// Resource type
case Elements.Collection:
if (waitForResourceType)
{
item.ResourceType = ResourceType.Collection;
}
break;
// Lock
case Elements.LockEntry:
litem = new DAVLocking();
lockingList.Add(litem);
break;
case Elements.LockScope:
waitForLockScope = true;
break;
case Elements.LockType:
waitForLockType = true;
break;
case Elements.ExclusiveLocking:
if (waitForLockScope)
{
litem.Scope = DAVLocking.LockScope.Exclusive;
}
break;
case Elements.SharedLocking:
if (waitForLockScope)
{
litem.Scope = DAVLocking.LockScope.Shared;
}
break;
case Elements.WriteLocking:
if (waitForLockType)
{
litem.Type = DAVLocking.LockType.Write;
}
break;
case Elements.LockDiscovery:
///TODO
break;
// DAV Properties
case Elements.Properties:
// a pItem was already created before
break;
case Properties.ResourceType:
waitForResourceType = true;
break;
case Properties.SupportedLock:
lockingList = new List <DAVLocking>();
break;
default:
lastElementName = reader.LocalName;
break;
}
}
break;
// clean up
case XmlNodeType.EndElement:
if (reader.NamespaceURI == XmlNamespaces.NsDav)
{
switch (reader.LocalName)
{
// DAV Elements
case Elements.PropertyState:
// save to list and create a new one (which stays maybe temporary)
propertyStateList.Add(pItem);
pItem = new PropertyState();
break;
case Elements.Response:
// clean the list
// the HTTP Status is important
foreach (PropertyState state in propertyStateList)
{
if (state.Status == ServerStatus.OK)
{
item.Properties = state.Properties;
}
else
{
item.FailedProperties.Add(state);
}
}
// Close the item
Items.Add(item);
item = null;
// Reset the property state list
propertyStateList = null;
pItem = null;
break;
// Locking
case Elements.LockType:
waitForLockType = false;
break;
case Elements.LockScope:
waitForLockScope = false;
break;
// DAV Properties
case Properties.ResourceType:
waitForResourceType = false;
break;
case Properties.SupportedLock:
item.Locking = lockingList;
break;
}
}
break;
// Grap the text values
case XmlNodeType.Text:
// no whitespace please
if (reader.Value == null)
{
continue;
}
// can't set in empty element
if (item == null)
{
continue;
}
switch (lastElementName)
{
// DAV Elements
case Elements.Reference:
string _ref = Uri.UnescapeDataString(reader.Value);
string _localRef = _ref.Substring(uri.LocalPath.Length, _ref.Length - uri.LocalPath.Length);
pItem.Properties.Add(lastElementName, _ref);
pItem.Properties.Add(lastElementName + ".local", _localRef.Trim('/'));
break;
// Status element
case Elements.Status:
List <string> s = new List <string>(reader.Value.Split(' '));
s.RemoveAt(0);
pItem.Status = (ServerStatus)Enum.Parse(typeof(ServerStatus), s[0], false);
s.RemoveAt(0);
pItem.ServerStatusText = String.Join(" ", s.ToArray());
break;
// DAV Properties
case Properties.QuotaUsedBytes:
case Properties.QuotaAvailableBytes:
case Properties.GetContentLength:
pItem.Properties.Add(lastElementName, long.Parse(reader.Value));
break;
case Properties.DisplayName:
case Properties.GetContentLanguage:
case Properties.GetContentType:
case Properties.GetETag:
pItem.Properties.Add(lastElementName, reader.Value);
break;
case Properties.GetLastModified:
case Properties.CreationDate:
pItem.Properties.Add(lastElementName, DateTime.Parse(reader.Value));
break;
}
lastElementName = "";
break;
}
}
}
}
