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  • Committer: Bazaar Package Importer
  • Author(s): Mirco Bauer
  • Date: 2007-07-14 12:07:48 UTC
  • Revision ID: james.westby@ubuntu.com-20070714120748-2elczfsjlrdsrpms
Tags: upstream-0.2
Import upstream version 0.2

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Mono.Addins/Mono.Addins/Addin.cs
 
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//
 
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// Addin.cs
 
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//
 
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// Author:
 
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//   Lluis Sanchez Gual
 
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//
 
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// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
 
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//
 
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// Permission is hereby granted, free of charge, to any person obtaining
 
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// a copy of this software and associated documentation files (the
 
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// "Software"), to deal in the Software without restriction, including
 
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// without limitation the rights to use, copy, modify, merge, publish,
 
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// distribute, sublicense, and/or sell copies of the Software, and to
 
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// permit persons to whom the Software is furnished to do so, subject to
 
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// the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be
 
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// included in all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
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//
 
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using System;
 
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using System.Collections;
 
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using System.IO;
 
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using System.Xml;
 
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using System.Xml.Serialization;
 
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using System.Collections.Specialized;
 
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using Mono.Addins.Description;
 
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using Mono.Addins.Database;
 
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namespace Mono.Addins
 
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{
 
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        public class Addin
 
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        {
 
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                AddinInfo addin;
 
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                string configFile;
 
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                string sourceFile;
 
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                string hostId;
 
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                WeakReference desc;
 
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                AddinDatabase database;
 
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                internal Addin (AddinDatabase database, string file)
 
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                {
 
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                        this.database = database;
 
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                        configFile = file;
 
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                }
 
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                internal Addin (AddinDatabase database, string hostId, string hostSourceFile)
 
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                {
 
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                        this.database = database;
 
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                        this.hostId = hostId;
 
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                        this.sourceFile = hostSourceFile;
 
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                }
 
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                public string Id {
 
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                        get { return this.AddinInfo.Id; }
 
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                }
 
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                public string Namespace {
 
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                        get { return this.AddinInfo.Namespace; }
 
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                }
 
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                public string LocalId {
 
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                        get { return this.AddinInfo.LocalId; }
 
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                }
 
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                public string Version {
 
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                        get { return this.AddinInfo.Version; }
 
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                }
 
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                public string Name {
 
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                        get { return this.AddinInfo.Name; }
 
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                }
 
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                internal string PrivateDataPath {
 
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                        get { return Path.Combine (database.AddinPrivateDataPath, Path.GetFileNameWithoutExtension (Description.FileName)); }
 
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                }
 
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                public bool SupportsVersion (string version)
 
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                {
 
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                        return AddinInfo.SupportsVersion (version);
 
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                }
 
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                internal AddinInfo AddinInfo {
 
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                        get {
 
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                                if (addin == null) {
 
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                                        try {
 
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                                                addin = AddinInfo.ReadFromDescription (Description);
 
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                                        } catch (Exception ex) {
 
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                                                throw new InvalidOperationException ("Could not read add-in file: " + configFile, ex);
 
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                                        }
 
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                                }
 
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                                return addin;
 
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                        }
 
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                }
 
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                public bool Enabled {
 
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                        get { return AddinInfo.IsRoot ? true : database.IsAddinEnabled (AddinInfo.Id, true); }
 
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                        set {
 
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                                if (value)
 
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                                        database.EnableAddin (AddinInfo.Id, true);
 
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                                else
 
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                                        database.DisableAddin (AddinInfo.Id);
 
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                        }
 
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                }
 
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                public bool IsUserAddin {
 
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                        get { return configFile.StartsWith (Environment.GetFolderPath (Environment.SpecialFolder.Personal)); }
 
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                }
 
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                public string AddinFile {
 
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                        get {
 
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                                if (sourceFile == null && addin == null)
 
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                                        LoadAddinInfo ();
 
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                                return sourceFile;
 
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                        }
 
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                }
 
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                void LoadAddinInfo ()
 
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                {
 
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                        if (addin == null) {
 
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                                try {
 
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                                        AddinDescription m = Description;
 
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                                        sourceFile = m.AddinFile;
 
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                                        addin = AddinInfo.ReadFromDescription (m);
 
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                                } catch (Exception ex) {
 
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                                        throw new InvalidOperationException ("Could not read add-in file: " + configFile, ex);
 
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                                }
 
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                        }
 
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                }
 
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                public AddinDescription Description {
 
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                        get {
 
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                                if (desc != null) {
 
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                                        AddinDescription d = desc.Target as AddinDescription;
 
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                                        if (d != null)
 
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                                                return d;
 
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                                }
 
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                                AddinDescription m;
 
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                                if (hostId != null)
 
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                                        database.GetHostDescription (null, hostId, sourceFile, out m);
 
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                                else
 
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                                        database.ReadAddinDescription (null, configFile, out m);
 
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                                if (m == null)
 
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                                        throw new InvalidOperationException ("Could not read add-in description");
 
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                                if (addin == null) {
 
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                                        addin = AddinInfo.ReadFromDescription (m);
 
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                                        sourceFile = m.AddinFile;
 
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                                }
 
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                                desc = new WeakReference (m);
 
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                                return m;
 
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                        }
 
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                }
 
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                public static int CompareVersions (string v1, string v2)
 
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                {
 
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                        string[] a1 = v1.Split ('.');
 
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                        string[] a2 = v2.Split ('.');
 
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                        for (int n=0; n<a1.Length; n++) {
 
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                                if (a1[n] == "") {
 
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                                        if (a2[n] != "")
 
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                                                return 1;
 
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                                        continue;
 
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                                }
 
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                                try {
 
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                                        int n1 = int.Parse (a1[n]);
 
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                                        int n2 = int.Parse (a2[n]);
 
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                                        if (n1 < n2)
 
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                                                return 1;
 
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                                        else if (n1 > n2)
 
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                                                return -1;
 
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                                } catch {
 
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                                        return 1;
 
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                                }
 
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                        }
 
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                        return 0;
 
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                }
 
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                public static string GetFullId (string ns, string id, string version)
 
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                {
 
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                        string res;
 
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                        if (id.StartsWith ("::"))
 
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                                res = id.Substring (2);
 
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                        else if (ns != null && ns.Length > 0)
 
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                                res = ns + "." + id;
 
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                        else
 
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                                res = id;
 
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                        if (version != null && version.Length > 0)
 
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                                return res + "," + version;
 
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                        else
 
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                                return res;
 
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                }
 
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                public static string GetIdName (string addinId)
 
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                {
 
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                        int i = addinId.IndexOf (',');
 
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                        if (i != -1)
 
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                                return addinId.Substring (0, i);
 
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                        else
 
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                                return addinId;
 
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                }
 
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                public static string GetIdVersion (string addinId)
 
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                {
 
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                        int i = addinId.IndexOf (',');
 
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                        if (i != -1)
 
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                                return addinId.Substring (i + 1).Trim ();
 
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                        else
 
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                                return string.Empty;
 
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                }
 
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                public static void GetIdParts (string addinId, out string name, out string version)
 
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                {
 
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                        int i = addinId.IndexOf (',');
 
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                        if (i != -1) {
 
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                                name = addinId.Substring (0, i);
 
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                                version = addinId.Substring (i+1).Trim ();
 
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                        } else {
 
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                                name = addinId;
 
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                                version = string.Empty;
 
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                        }
 
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                }
 
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        }
 
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}