736 lines
26 KiB
C#
736 lines
26 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Xml;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading;
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using log4net;
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using OpenSim.Framework;
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namespace OpenSim.Framework.Console
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{
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public class Commands : ICommands
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{
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// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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/// <summary>
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/// Encapsulates a command that can be invoked from the console
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/// </summary>
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private class CommandInfo
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{
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/// <value>
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/// The module from which this command comes
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/// </value>
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public string module;
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/// <value>
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/// Whether the module is shared
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/// </value>
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public bool shared;
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/// <value>
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/// Very short BNF description
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/// </value>
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public string help_text;
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/// <value>
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/// Longer one line help text
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/// </value>
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public string long_help;
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/// <value>
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/// Full descriptive help for this command
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/// </value>
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public string descriptive_help;
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/// <value>
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/// The method to invoke for this command
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/// </value>
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public List<CommandDelegate> fn;
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}
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public const string GeneralHelpText = "For more information, type 'help <item>' where <item> is one of the following categories:";
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/// <value>
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/// Commands organized by keyword in a tree
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/// </value>
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private Dictionary<string, object> tree =
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new Dictionary<string, object>();
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/// <summary>
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/// Commands organized by module
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/// </summary>
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private Dictionary<string, List<CommandInfo>> m_modulesCommands = new Dictionary<string, List<CommandInfo>>();
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/// <summary>
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/// Get help for the given help string
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/// </summary>
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/// <param name="helpParts">Parsed parts of the help string. If empty then general help is returned.</param>
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/// <returns></returns>
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public List<string> GetHelp(string[] cmd)
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{
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List<string> help = new List<string>();
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List<string> helpParts = new List<string>(cmd);
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// Remove initial help keyword
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helpParts.RemoveAt(0);
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// General help
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if (helpParts.Count == 0)
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{
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help.Add(GeneralHelpText);
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help.AddRange(CollectModulesHelp(tree));
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}
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else
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{
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help.AddRange(CollectHelp(helpParts));
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}
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return help;
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}
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/// <summary>
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/// See if we can find the requested command in order to display longer help
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/// </summary>
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/// <param name="helpParts"></param>
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/// <returns></returns>
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private List<string> CollectHelp(List<string> helpParts)
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{
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string originalHelpRequest = string.Join(" ", helpParts.ToArray());
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List<string> help = new List<string>();
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// Check modules first to see if we just need to display a list of those commands
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if (TryCollectModuleHelp(originalHelpRequest, help))
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{
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help.Insert(0, GeneralHelpText);
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return help;
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}
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Dictionary<string, object> dict = tree;
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while (helpParts.Count > 0)
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{
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string helpPart = helpParts[0];
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if (!dict.ContainsKey(helpPart))
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break;
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//m_log.Debug("Found {0}", helpParts[0]);
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if (dict[helpPart] is Dictionary<string, Object>)
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dict = (Dictionary<string, object>)dict[helpPart];
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helpParts.RemoveAt(0);
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}
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// There was a command for the given help string
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if (dict.ContainsKey(String.Empty))
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{
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CommandInfo commandInfo = (CommandInfo)dict[String.Empty];
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help.Add(commandInfo.help_text);
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help.Add(commandInfo.long_help);
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string descriptiveHelp = commandInfo.descriptive_help;
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// If we do have some descriptive help then insert a spacing line before and after for readability.
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if (descriptiveHelp != string.Empty)
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help.Add(string.Empty);
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help.Add(commandInfo.descriptive_help);
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if (descriptiveHelp != string.Empty)
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help.Add(string.Empty);
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}
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else
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{
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help.Add(string.Format("No help is available for {0}", originalHelpRequest));
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}
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return help;
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}
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/// <summary>
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/// Try to collect help for the given module if that module exists.
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/// </summary>
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/// <param name="moduleName"></param>
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/// <param name="helpText">/param>
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/// <returns>true if there was the module existed, false otherwise.</returns>
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private bool TryCollectModuleHelp(string moduleName, List<string> helpText)
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{
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lock (m_modulesCommands)
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{
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foreach (string key in m_modulesCommands.Keys)
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{
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// Allow topic help requests to succeed whether they are upper or lowercase.
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if (moduleName.ToLower() == key.ToLower())
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{
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List<CommandInfo> commands = m_modulesCommands[key];
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var ourHelpText = commands.ConvertAll(c => string.Format("{0} - {1}", c.help_text, c.long_help));
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ourHelpText.Sort();
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helpText.AddRange(ourHelpText);
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return true;
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}
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}
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return false;
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}
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}
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private List<string> CollectModulesHelp(Dictionary<string, object> dict)
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{
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lock (m_modulesCommands)
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{
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List<string> helpText = new List<string>(m_modulesCommands.Keys);
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helpText.Sort();
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return helpText;
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}
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}
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// private List<string> CollectHelp(Dictionary<string, object> dict)
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// {
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// List<string> result = new List<string>();
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//
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// foreach (KeyValuePair<string, object> kvp in dict)
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// {
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// if (kvp.Value is Dictionary<string, Object>)
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// {
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// result.AddRange(CollectHelp((Dictionary<string, Object>)kvp.Value));
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// }
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// else
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// {
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// if (((CommandInfo)kvp.Value).long_help != String.Empty)
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// result.Add(((CommandInfo)kvp.Value).help_text+" - "+
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// ((CommandInfo)kvp.Value).long_help);
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// }
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// }
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// return result;
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// }
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/// <summary>
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/// Add a command to those which can be invoked from the console.
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/// </summary>
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/// <param name="module"></param>
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/// <param name="command"></param>
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/// <param name="help"></param>
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/// <param name="longhelp"></param>
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/// <param name="fn"></param>
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public void AddCommand(string module, bool shared, string command,
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string help, string longhelp, CommandDelegate fn)
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{
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AddCommand(module, shared, command, help, longhelp, String.Empty, fn);
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}
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/// <summary>
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/// Add a command to those which can be invoked from the console.
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/// </summary>
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/// <param name="module"></param>
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/// <param name="command"></param>
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/// <param name="help"></param>
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/// <param name="longhelp"></param>
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/// <param name="descriptivehelp"></param>
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/// <param name="fn"></param>
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public void AddCommand(string module, bool shared, string command,
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string help, string longhelp, string descriptivehelp,
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CommandDelegate fn)
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{
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string[] parts = Parser.Parse(command);
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Dictionary<string, Object> current = tree;
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foreach (string part in parts)
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{
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if (current.ContainsKey(part))
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{
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if (current[part] is Dictionary<string, Object>)
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current = (Dictionary<string, Object>)current[part];
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else
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return;
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}
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else
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{
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current[part] = new Dictionary<string, Object>();
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current = (Dictionary<string, Object>)current[part];
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}
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}
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CommandInfo info;
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if (current.ContainsKey(String.Empty))
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{
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info = (CommandInfo)current[String.Empty];
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if (!info.shared && !info.fn.Contains(fn))
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info.fn.Add(fn);
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return;
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}
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info = new CommandInfo();
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info.module = module;
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info.shared = shared;
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info.help_text = help;
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info.long_help = longhelp;
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info.descriptive_help = descriptivehelp;
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info.fn = new List<CommandDelegate>();
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info.fn.Add(fn);
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current[String.Empty] = info;
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// Now add command to modules dictionary
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lock (m_modulesCommands)
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{
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List<CommandInfo> commands;
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if (m_modulesCommands.ContainsKey(module))
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{
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commands = m_modulesCommands[module];
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}
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else
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{
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commands = new List<CommandInfo>();
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m_modulesCommands[module] = commands;
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}
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// m_log.DebugFormat("[COMMAND CONSOLE]: Adding to category {0} command {1}", module, command);
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commands.Add(info);
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}
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}
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public string[] FindNextOption(string[] cmd, bool term)
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{
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Dictionary<string, object> current = tree;
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int remaining = cmd.Length;
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foreach (string s in cmd)
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{
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remaining--;
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List<string> found = new List<string>();
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foreach (string opt in current.Keys)
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{
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if (remaining > 0 && opt == s)
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{
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found.Clear();
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found.Add(opt);
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break;
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}
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if (opt.StartsWith(s))
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{
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found.Add(opt);
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}
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}
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if (found.Count == 1 && (remaining != 0 || term))
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{
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current = (Dictionary<string, object>)current[found[0]];
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}
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else if (found.Count > 0)
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{
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return found.ToArray();
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}
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else
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{
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break;
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// return new string[] {"<cr>"};
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}
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}
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if (current.Count > 1)
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{
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List<string> choices = new List<string>();
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bool addcr = false;
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foreach (string s in current.Keys)
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{
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if (s == String.Empty)
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{
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CommandInfo ci = (CommandInfo)current[String.Empty];
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if (ci.fn.Count != 0)
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addcr = true;
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}
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else
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choices.Add(s);
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}
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if (addcr)
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choices.Add("<cr>");
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return choices.ToArray();
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}
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if (current.ContainsKey(String.Empty))
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return new string[] { "Command help: "+((CommandInfo)current[String.Empty]).help_text};
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return new string[] { new List<string>(current.Keys)[0] };
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}
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public string[] Resolve(string[] cmd)
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{
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string[] result = cmd;
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int index = -1;
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Dictionary<string, object> current = tree;
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foreach (string s in cmd)
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{
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index++;
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List<string> found = new List<string>();
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foreach (string opt in current.Keys)
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{
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if (opt == s)
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{
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found.Clear();
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found.Add(opt);
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break;
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}
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if (opt.StartsWith(s))
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{
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found.Add(opt);
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}
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}
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if (found.Count == 1)
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{
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result[index] = found[0];
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current = (Dictionary<string, object>)current[found[0]];
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}
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else if (found.Count > 0)
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{
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return new string[0];
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}
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else
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{
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break;
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}
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}
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if (current.ContainsKey(String.Empty))
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{
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CommandInfo ci = (CommandInfo)current[String.Empty];
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if (ci.fn.Count == 0)
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return new string[0];
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foreach (CommandDelegate fn in ci.fn)
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{
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if (fn != null)
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fn(ci.module, result);
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else
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return new string[0];
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}
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return result;
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}
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return new string[0];
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}
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public XmlElement GetXml(XmlDocument doc)
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{
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CommandInfo help = (CommandInfo)((Dictionary<string, object>)tree["help"])[String.Empty];
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((Dictionary<string, object>)tree["help"]).Remove(string.Empty);
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if (((Dictionary<string, object>)tree["help"]).Count == 0)
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tree.Remove("help");
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CommandInfo quit = (CommandInfo)((Dictionary<string, object>)tree["quit"])[String.Empty];
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((Dictionary<string, object>)tree["quit"]).Remove(string.Empty);
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if (((Dictionary<string, object>)tree["quit"]).Count == 0)
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tree.Remove("quit");
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XmlElement root = doc.CreateElement("", "HelpTree", "");
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ProcessTreeLevel(tree, root, doc);
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if (!tree.ContainsKey("help"))
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tree["help"] = (object) new Dictionary<string, object>();
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((Dictionary<string, object>)tree["help"])[String.Empty] = help;
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if (!tree.ContainsKey("quit"))
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tree["quit"] = (object) new Dictionary<string, object>();
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((Dictionary<string, object>)tree["quit"])[String.Empty] = quit;
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return root;
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}
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private void ProcessTreeLevel(Dictionary<string, object> level, XmlElement xml, XmlDocument doc)
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{
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foreach (KeyValuePair<string, object> kvp in level)
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{
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if (kvp.Value is Dictionary<string, Object>)
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{
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XmlElement next = doc.CreateElement("", "Level", "");
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next.SetAttribute("Name", kvp.Key);
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xml.AppendChild(next);
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ProcessTreeLevel((Dictionary<string, object>)kvp.Value, next, doc);
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}
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else
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{
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CommandInfo c = (CommandInfo)kvp.Value;
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XmlElement cmd = doc.CreateElement("", "Command", "");
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XmlElement e;
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e = doc.CreateElement("", "Module", "");
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cmd.AppendChild(e);
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e.AppendChild(doc.CreateTextNode(c.module));
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e = doc.CreateElement("", "Shared", "");
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cmd.AppendChild(e);
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e.AppendChild(doc.CreateTextNode(c.shared.ToString()));
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e = doc.CreateElement("", "HelpText", "");
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cmd.AppendChild(e);
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e.AppendChild(doc.CreateTextNode(c.help_text));
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e = doc.CreateElement("", "LongHelp", "");
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cmd.AppendChild(e);
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e.AppendChild(doc.CreateTextNode(c.long_help));
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e = doc.CreateElement("", "Description", "");
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cmd.AppendChild(e);
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e.AppendChild(doc.CreateTextNode(c.descriptive_help));
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xml.AppendChild(cmd);
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}
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}
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}
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public void FromXml(XmlElement root, CommandDelegate fn)
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{
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CommandInfo help = (CommandInfo)((Dictionary<string, object>)tree["help"])[String.Empty];
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((Dictionary<string, object>)tree["help"]).Remove(string.Empty);
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if (((Dictionary<string, object>)tree["help"]).Count == 0)
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tree.Remove("help");
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CommandInfo quit = (CommandInfo)((Dictionary<string, object>)tree["quit"])[String.Empty];
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((Dictionary<string, object>)tree["quit"]).Remove(string.Empty);
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if (((Dictionary<string, object>)tree["quit"]).Count == 0)
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tree.Remove("quit");
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tree.Clear();
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ReadTreeLevel(tree, root, fn);
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if (!tree.ContainsKey("help"))
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tree["help"] = (object) new Dictionary<string, object>();
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((Dictionary<string, object>)tree["help"])[String.Empty] = help;
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|
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if (!tree.ContainsKey("quit"))
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tree["quit"] = (object) new Dictionary<string, object>();
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((Dictionary<string, object>)tree["quit"])[String.Empty] = quit;
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}
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private void ReadTreeLevel(Dictionary<string, object> level, XmlNode node, CommandDelegate fn)
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{
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Dictionary<string, object> next;
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string name;
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XmlNodeList nodeL = node.ChildNodes;
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XmlNodeList cmdL;
|
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CommandInfo c;
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foreach (XmlNode part in nodeL)
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{
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switch (part.Name)
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{
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case "Level":
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name = ((XmlElement)part).GetAttribute("Name");
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next = new Dictionary<string, object>();
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level[name] = next;
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ReadTreeLevel(next, part, fn);
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break;
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case "Command":
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cmdL = part.ChildNodes;
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c = new CommandInfo();
|
|
foreach (XmlNode cmdPart in cmdL)
|
|
{
|
|
switch (cmdPart.Name)
|
|
{
|
|
case "Module":
|
|
c.module = cmdPart.InnerText;
|
|
break;
|
|
case "Shared":
|
|
c.shared = Convert.ToBoolean(cmdPart.InnerText);
|
|
break;
|
|
case "HelpText":
|
|
c.help_text = cmdPart.InnerText;
|
|
break;
|
|
case "LongHelp":
|
|
c.long_help = cmdPart.InnerText;
|
|
break;
|
|
case "Description":
|
|
c.descriptive_help = cmdPart.InnerText;
|
|
break;
|
|
}
|
|
}
|
|
c.fn = new List<CommandDelegate>();
|
|
c.fn.Add(fn);
|
|
level[String.Empty] = c;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public class Parser
|
|
{
|
|
// If an unquoted portion ends with an element matching this regex
|
|
// and the next element contains a space, then we have stripped
|
|
// embedded quotes that should not have been stripped
|
|
private static Regex optionRegex = new Regex("^--[a-zA-Z0-9-]+=$");
|
|
|
|
public static string[] Parse(string text)
|
|
{
|
|
List<string> result = new List<string>();
|
|
|
|
int index;
|
|
|
|
string[] unquoted = text.Split(new char[] {'"'});
|
|
|
|
for (index = 0 ; index < unquoted.Length ; index++)
|
|
{
|
|
if (index % 2 == 0)
|
|
{
|
|
string[] words = unquoted[index].Split(new char[] {' '});
|
|
|
|
bool option = false;
|
|
foreach (string w in words)
|
|
{
|
|
if (w != String.Empty)
|
|
{
|
|
if (optionRegex.Match(w) == Match.Empty)
|
|
option = false;
|
|
else
|
|
option = true;
|
|
result.Add(w);
|
|
}
|
|
}
|
|
// The last item matched the regex, put the quotes back
|
|
if (option)
|
|
{
|
|
// If the line ended with it, don't do anything
|
|
if (index < (unquoted.Length - 1))
|
|
{
|
|
// Get and remove the option name
|
|
string optionText = result[result.Count - 1];
|
|
result.RemoveAt(result.Count - 1);
|
|
|
|
// Add the quoted value back
|
|
optionText += "\"" + unquoted[index + 1] + "\"";
|
|
|
|
// Push the result into our return array
|
|
result.Add(optionText);
|
|
|
|
// Skip the already used value
|
|
index++;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result.Add(unquoted[index]);
|
|
}
|
|
}
|
|
|
|
return result.ToArray();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// A console that processes commands internally
|
|
/// </summary>
|
|
public class CommandConsole : ConsoleBase, ICommandConsole
|
|
{
|
|
// private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
|
|
|
|
public ICommands Commands { get; private set; }
|
|
|
|
public CommandConsole(string defaultPrompt) : base(defaultPrompt)
|
|
{
|
|
Commands = new Commands();
|
|
|
|
Commands.AddCommand(
|
|
"Help", false, "help", "help [<item>]",
|
|
"Display help on a particular command or on a list of commands in a category", Help);
|
|
}
|
|
|
|
private void Help(string module, string[] cmd)
|
|
{
|
|
List<string> help = Commands.GetHelp(cmd);
|
|
|
|
foreach (string s in help)
|
|
Output(s);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Display a command prompt on the console and wait for user input
|
|
/// </summary>
|
|
public void Prompt()
|
|
{
|
|
string line = ReadLine(m_defaultPrompt + "# ", true, true);
|
|
|
|
if (line != String.Empty)
|
|
Output("Invalid command");
|
|
}
|
|
|
|
public void RunCommand(string cmd)
|
|
{
|
|
string[] parts = Parser.Parse(cmd);
|
|
Commands.Resolve(parts);
|
|
}
|
|
|
|
public override string ReadLine(string p, bool isCommand, bool e)
|
|
{
|
|
System.Console.Write("{0}", p);
|
|
string cmdinput = System.Console.ReadLine();
|
|
|
|
if (isCommand)
|
|
{
|
|
string[] cmd = Commands.Resolve(Parser.Parse(cmdinput));
|
|
|
|
if (cmd.Length != 0)
|
|
{
|
|
int i;
|
|
|
|
for (i=0 ; i < cmd.Length ; i++)
|
|
{
|
|
if (cmd[i].Contains(" "))
|
|
cmd[i] = "\"" + cmd[i] + "\"";
|
|
}
|
|
return String.Empty;
|
|
}
|
|
}
|
|
return cmdinput;
|
|
}
|
|
}
|
|
}
|