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//
// PolicySet.cs
//
// Author:
// Michael Hutchinson <mhutchinson@novell.com>
//
// Copyright (C) 2008 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Linq;
using System.Collections.Generic;
using System.IO;
using System.Xml;
using MonoDevelop.Core.Serialization;
using Mono.Addins;
using MonoDevelop.Core;
namespace MonoDevelop.Projects.Policies
{
/// <summary>
/// A named set of policies.
/// </summary>
public sealed class PolicySet: PolicyContainer
{
HashSet<PolicyKey> externalPolicies = new HashSet<PolicyKey> ();
internal PolicySet (string id, string name)
{
this.Id = id;
this.Name = name;
Visible = true;
}
public PolicySet ()
{
Visible = true;
}
public override bool IsRoot {
get { return true; }
}
/// <summary>
/// When set to false, this policy set is not visible to the user. This flag can be used
/// to deprecate existing policy sets (since registered policy sets can't be modified/removed).
/// </summary>
public bool Visible { get; set; }
/// <summary>
/// When set to true, this policy can be used as a base for a differential serialization. It's false by default
/// </summary>
public bool AllowDiffSerialize { get; internal set; }
public override PolicyContainer ParentPolicies {
get { return null; }
}
protected override T GetDefaultPolicy<T> ()
{
return null;
}
protected override T GetDefaultPolicy<T> (IEnumerable<string> scopes)
{
return null;
}
public string Name { get; set; }
public string Id { get; private set; }
internal PolicyKey[] AddSerializedPolicies (StreamReader reader)
{
if (policies == null)
policies = new PolicyDictionary ();
var keys = new List<PolicyKey> ();
foreach (ScopedPolicy policyPair in PolicyService.RawDeserializeXml (reader)) {
PolicyKey key = new PolicyKey (policyPair.PolicyType, policyPair.Scope);
if (policies.ContainsKey (key))
throw new InvalidOperationException ("Cannot add second policy of type '" +
key.ToString () + "' to policy set '" + Id + "'");
keys.Add (key);
policies[key] = policyPair.Policy;
if (!policyPair.SupportsDiffSerialize)
externalPolicies.Add (key);
}
return keys.ToArray ();
}
internal bool SupportsDiffSerialize (ScopedPolicy pol)
{
if (!AllowDiffSerialize)
return false;
PolicyKey pk = new PolicyKey (pol.PolicyType, pol.Scope);
return !externalPolicies.Contains (pk);
}
public void SaveToFile (FilePath file)
{
using (StreamWriter sw = new StreamWriter (file))
SaveToFile (sw);
}
internal void SaveToFile (StreamWriter writer)
{
XmlWriterSettings xws = new XmlWriterSettings ();
xws.Indent = true;
XmlWriter xw = XmlTextWriter.Create(writer, xws);
using (xw) {
SaveToXml (xw);
}
}
internal void SaveToXml (XmlWriter xw)
{
XmlConfigurationWriter cw = new XmlConfigurationWriter ();
cw.StoreAllInElements = true;
cw.StoreInElementExceptions = new String[] { "scope", "inheritsSet", "inheritsScope" };
xw.WriteStartElement ("PolicySet");
if (!string.IsNullOrEmpty (Name))
xw.WriteAttributeString ("name", Name);
if (!string.IsNullOrEmpty (Id))
xw.WriteAttributeString ("id", Id);
if (policies != null) {
foreach (KeyValuePair<PolicyKey,object> policyPair in policies)
cw.Write (xw, PolicyService.DiffSerialize (policyPair.Key.PolicyType, policyPair.Value, policyPair.Key.Scope));
}
xw.WriteEndElement ();
}
public void LoadFromFile (FilePath file)
{
using (StreamReader sr = new StreamReader (file))
LoadFromFile (sr);
}
internal void LoadFromFile (StreamReader reader)
{
var xr = XmlReader.Create (reader);
LoadFromXml (xr);
}
internal void LoadFromXml (XmlReader reader)
{
if (policies == null)
policies = new PolicyDictionary ();
else
policies.Clear ();
reader.MoveToContent ();
string str = reader.GetAttribute ("name");
if (!string.IsNullOrEmpty (str))
Name = str;
str = reader.GetAttribute ("id");
if (!string.IsNullOrEmpty (str))
Id = str;
reader.MoveToElement ();
//note: can't use AddSerializedPolicies as we want diff serialisation
foreach (ScopedPolicy policyPair in PolicyService.DiffDeserializeXml (reader)) {
PolicyKey key = new PolicyKey (policyPair.PolicyType, policyPair.Scope);
if (policies.ContainsKey (key))
throw new InvalidOperationException (
"Cannot add second policy of type '" + key + "' to policy set '" + Id + "'"
);
policies[key] = policyPair.Policy;
}
}
public PolicySet Clone ()
{
PolicySet p = new PolicySet ();
p.CopyFrom (this);
p.Name = Name;
return p;
}
}
}
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