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https://github.com/greenshot/greenshot
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"Merged" 0.8 with HEAD, so we can continue developing
git-svn-id: http://svn.code.sf.net/p/greenshot/code/trunk@1282 7dccd23d-a4a3-4e1f-8c07-b4c1b4018ab4
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RKrom
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294
Greenshot/Helpers/PluginHelper.cs
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294
Greenshot/Helpers/PluginHelper.cs
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/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2011 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Reflection;
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using System.Text;
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using System.Windows.Forms;
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using Greenshot.Configuration;
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using Greenshot.Plugin;
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using GreenshotPlugin.Controls;
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using GreenshotPlugin.Core;
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namespace Greenshot.Helpers {
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/// <summary>
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/// The PluginHelper takes care of all plugin related functionality
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/// </summary>
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[Serializable]
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public class PluginHelper : IGreenshotPluginHost {
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private static readonly log4net.ILog LOG = log4net.LogManager.GetLogger(typeof(PluginHelper));
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private static CoreConfiguration conf = IniConfig.GetIniSection<CoreConfiguration>();
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public static string configpath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),Application.ProductName);
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public static string applicationpath = Path.GetDirectoryName(Application.ExecutablePath);
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public static readonly PluginHelper instance = new PluginHelper();
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private static Dictionary<PluginAttribute, IGreenshotPlugin> plugins = new Dictionary<PluginAttribute, IGreenshotPlugin>();
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private PluginHelper() {
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}
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public string ConfigurationPath {
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get {return configpath;}
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}
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public void CreateImageEditorOpenEvent(IImageEditor imageEditor) {
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if (OnImageEditorOpen != null) {
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ImageEditorOpenEventArgs eventArgs = new ImageEditorOpenEventArgs(imageEditor);
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OnImageEditorOpen(this, eventArgs);
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}
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}
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public void CreateCaptureTakenEvent(ICapture capture) {
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if (OnCaptureTaken != null) {
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CaptureTakenEventArgs eventArgs = new CaptureTakenEventArgs(capture);
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OnCaptureTaken(this, eventArgs);
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}
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}
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public void CreateSurfaceFromCaptureEvent(ICapture capture, ISurface surface) {
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if (OnSurfaceFromCapture != null) {
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SurfaceFromCaptureEventArgs eventArgs = new SurfaceFromCaptureEventArgs(capture, surface);
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OnSurfaceFromCapture(this, eventArgs);
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}
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}
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public bool HasPlugins() {
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return (plugins != null && plugins.Count > 0);
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}
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public void Shutdown() {
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foreach(IGreenshotPlugin plugin in plugins.Values) {
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plugin.Shutdown();
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}
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plugins.Clear();
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}
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// Add plugins to the Listview
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public void FillListview(ListView listview) {
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foreach(PluginAttribute pluginAttribute in plugins.Keys) {
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ListViewItem item = new ListViewItem(pluginAttribute.Name);
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item.SubItems.Add(pluginAttribute.Version);
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item.SubItems.Add(pluginAttribute.DllFile);
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item.Tag = pluginAttribute;
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listview.Items.Add(item);
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}
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}
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public bool isSelectedItemConfigurable(ListView listview) {
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if (listview.SelectedItems.Count > 0) {
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PluginAttribute pluginAttribute = (PluginAttribute)listview.SelectedItems[0].Tag;
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if (pluginAttribute != null) {
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return pluginAttribute.Configurable;
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}
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}
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return false;
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}
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public void ConfigureSelectedItem(ListView listview) {
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if (listview.SelectedItems.Count > 0) {
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PluginAttribute pluginAttribute = (PluginAttribute)listview.SelectedItems[0].Tag;
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if (pluginAttribute != null) {
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IGreenshotPlugin plugin = plugins[pluginAttribute];
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plugin.Configure();
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}
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}
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}
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#region Implementation of IGreenshotPluginHost
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public event OnImageEditorOpenHandler OnImageEditorOpen;
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public event OnCaptureTakenHandler OnCaptureTaken;
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public event OnSurfaceFromCaptureHandler OnSurfaceFromCapture;
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private ContextMenuStrip mainMenu = null;
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public void SaveToStream(Image img, Stream stream, OutputFormat extension, int quality) {
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ImageOutput.SaveToStream(img, stream, extension, quality);
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}
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public string GetFilename(OutputFormat format, ICaptureDetails captureDetails) {
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string pattern = conf.OutputFileFilenamePattern;
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if (pattern == null || string.IsNullOrEmpty(pattern.Trim())) {
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pattern = "greenshot ${capturetime}";
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}
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return FilenameHelper.GetFilenameFromPattern(pattern, format, captureDetails);
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}
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/// <summary>
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/// Create a Thumbnail
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/// </summary>
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/// <param name="image">Image of which we need a Thumbnail</param>
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/// <returns>Image with Thumbnail</returns>
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public Image GetThumbnail(Image image, int width, int height) {
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return image.GetThumbnailImage(width, height, new Image.GetThumbnailImageAbort(ThumbnailCallback), IntPtr.Zero);
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}
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/// <summary>
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/// Required for GetThumbnail, but not used
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/// </summary>
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/// <returns>true</returns>
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private bool ThumbnailCallback() {
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return true;
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}
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public ContextMenuStrip MainMenu {
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get { return mainMenu;}
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}
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public Dictionary<PluginAttribute, IGreenshotPlugin> Plugins {
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get {return plugins;}
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}
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#endregion
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#region Plugin loading
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public PluginAttribute FindPlugin(string name) {
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foreach(PluginAttribute pluginAttribute in plugins.Keys) {
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if (name.Equals(pluginAttribute.Name)) {
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return pluginAttribute;
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}
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}
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return null;
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}
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private bool isNewer(string version1, string version2) {
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string [] version1Parts = version1.Split('.');
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string [] version2Parts = version2.Split('.');
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int parts = Math.Min(version1Parts.Length, version2Parts.Length);
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for(int i=0; i < parts; i++) {
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int v1 = Convert.ToInt32(version1Parts[i]);
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int v2 = Convert.ToInt32(version2Parts[i]);
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if (v1 > v2) {
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return true;
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}
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if (v1 < v2) {
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return false;
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}
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}
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return false;
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}
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public void LoadPlugins(MainForm mainForm, ICaptureHost captureHost) {
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// Copy ContextMenu
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mainMenu = mainForm.MainMenu;
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List<string> pluginFiles = new List<string>();
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if (Directory.Exists(configpath)) {
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foreach(string pluginFile in Directory.GetFiles(configpath, "*.gsp", SearchOption.AllDirectories)) {
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pluginFiles.Add(pluginFile);
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}
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}
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if (Directory.Exists(applicationpath)) {
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foreach(string pluginFile in Directory.GetFiles(applicationpath, "*.gsp", SearchOption.AllDirectories)) {
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pluginFiles.Add(pluginFile);
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}
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}
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Dictionary<string, PluginAttribute> tmpAttributes = new Dictionary<string, PluginAttribute>();
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Dictionary<string, Assembly> tmpAssemblies = new Dictionary<string, Assembly>();
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// Loop over the list of available files and get the Plugin Attributes
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foreach (string pluginFile in pluginFiles) {
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LOG.DebugFormat("Checking the following file for plugins: {0}", pluginFile);
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try {
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Assembly assembly = Assembly.LoadFile(pluginFile);
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PluginAttribute[] pluginAttributes = assembly.GetCustomAttributes(typeof(PluginAttribute), false) as PluginAttribute[];
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if (pluginAttributes.Length > 0) {
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PluginAttribute pluginAttribute = pluginAttributes[0];
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AssemblyProductAttribute[] assemblyProductAttributes = assembly.GetCustomAttributes(typeof(AssemblyProductAttribute), false) as AssemblyProductAttribute[];
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if (assemblyProductAttributes.Length > 0) {
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pluginAttribute.Name = assemblyProductAttributes[0].Product;
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} else {
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continue;
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}
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pluginAttribute.Version = assembly.GetName().Version.ToString();
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pluginAttribute.DllFile = pluginFile;
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// check if this plugin is already available
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PluginAttribute checkPluginAttribute = null;
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try {
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checkPluginAttribute = tmpAttributes[pluginAttribute.Name];
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} catch {
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}
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if (checkPluginAttribute != null) {
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LOG.WarnFormat("Duplicate plugin {0} found", pluginAttribute.Name);
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if (isNewer(pluginAttribute.Version, checkPluginAttribute.Version)) {
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// Found is newer
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tmpAttributes[pluginAttribute.Name] = pluginAttribute;
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tmpAssemblies[pluginAttribute.Name] = assembly;
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LOG.InfoFormat("Loading the newer plugin {0} with version {1} from {2}", pluginAttribute.Name, pluginAttribute.Version, pluginAttribute.DllFile);
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} else {
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LOG.InfoFormat("Skipping (as the duplicate is newer or same version) the plugin {0} with version {1} from {2}", pluginAttribute.Name, pluginAttribute.Version, pluginAttribute.DllFile);
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}
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continue;
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} else {
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if (conf.ExcludePlugins != null && conf.ExcludePlugins.Contains(pluginAttribute.Name)) {
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LOG.WarnFormat("Exclude list: {0}", conf.ExcludePlugins.ToArray());
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LOG.WarnFormat("Skipping the excluded plugin {0} with version {1} from {2}", pluginAttribute.Name, pluginAttribute.Version, pluginAttribute.DllFile);
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continue;
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}
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if (conf.IncludePlugins != null && conf.IncludePlugins.Count > 0 && !conf.IncludePlugins.Contains(pluginAttribute.Name)) {
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// Whitelist is set
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LOG.WarnFormat("Include list: {0}", conf.IncludePlugins.ToArray());
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LOG.WarnFormat("Skipping the not included plugin {0} with version {1} from {2}", pluginAttribute.Name, pluginAttribute.Version, pluginAttribute.DllFile);
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continue;
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}
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LOG.InfoFormat("Loading the plugin {0} with version {1} from {2}", pluginAttribute.Name, pluginAttribute.Version, pluginAttribute.DllFile);
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tmpAttributes[pluginAttribute.Name] = pluginAttribute;
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tmpAssemblies[pluginAttribute.Name] = assembly;
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}
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} else {
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LOG.ErrorFormat("Can't find the needed Plugin Attribute ({0}) in the assembly of the file \"{1}\", skipping this file.", typeof(PluginAttribute), pluginFile);
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}
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} catch (Exception e) {
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LOG.Warn("Can't load file: " + pluginFile, e);
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}
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}
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foreach(string pluginName in tmpAttributes.Keys) {
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PluginAttribute pluginAttribute = tmpAttributes[pluginName];
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Assembly assembly = tmpAssemblies[pluginName];
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Type entryType = assembly.GetType(pluginAttribute.EntryType);
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if (entryType == null) {
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LOG.ErrorFormat("Can't find the in the PluginAttribute referenced type {0} in \"{1}\"", pluginAttribute.EntryType, pluginAttribute.DllFile);
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continue;
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}
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try {
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IGreenshotPlugin plugin = (IGreenshotPlugin)Activator.CreateInstance(entryType);
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if (plugin != null) {
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plugin.Initialize(this, captureHost, pluginAttribute);
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plugins.Add(pluginAttribute, plugin);
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} else {
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LOG.ErrorFormat("Can't create an instance of the in the PluginAttribute referenced type {0} from \"{1}\"", pluginAttribute.EntryType, pluginAttribute.DllFile);
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}
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} catch(Exception e) {
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LOG.Error("Can't load Plugin: " + pluginAttribute.Name, e);
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}
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}
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}
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#endregion
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}
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}
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