Windows Mobile

开发平台：
Windows_Unix

OpmlHelper.cs：源码内容
							﻿/****************************************************************
 ** 文件名:OpmlHelper.cs
 ** 创建人:李万龙
 ** 联  系:shenlongju@hotmail.com
 ** 日  期:2008-05-05
 ** 描  述:操作Opml文件的方法类
 ** 修改人:
 ** 日  期:
 ** 描  述:
 ** 版  本:1.0.0.0
 ** Copyright (c) 2007-2008 3ESoft
******************************************************************/
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.IO;
namespace _3ESoft.WindowsMobile.RSS
{
    /// <summary>
    /// 操作Opml文件的类
    /// </summary>
    public class OpmlHelper
    {
        /// <summary>
        /// 增加频道分类
        /// </summary>
        /// <param name="strTitle"></param>
        /// <returns></returns>
        public static bool ChannelAdd(string strTitle)
        {
            XmlDocument doc = new XmlDocument();
            try
            {
                doc.Load(Global.AppRssConfigFilePath() + "RSSMenu.opml");
                XmlNode xNode = doc.SelectSingleNode("/opml/body/outline").Clone();
                xNode.InnerXml = "";
                xNode.Attributes.GetNamedItem("title").InnerText = strTitle;
                if (xNode.Attributes.GetNamedItem("text") != null)
                    xNode.Attributes.GetNamedItem("text").InnerText = strTitle;
                xNode.Attributes.GetNamedItem("type").InnerText = "channel";
                xNode.Attributes.GetNamedItem("id").InnerText = DateTime.Now.Ticks.ToString();
                XmlNode Node = doc.SelectSingleNode("/opml/body");
                Node.AppendChild(xNode);
                doc.Save(Global.AppRssConfigFilePath() + "RSSMenu.opml");
            }
            catch
            { return false; }
            return true;
        }
        /// <summary>
        /// 删除频道分类
        /// </summary>
        /// <param name="strTitle"></param>
        /// <returns></returns>
        public static bool ChannelDel(string strTitle)
        {
            XmlDocument doc = new XmlDocument();
            try
            {
                doc.Load(Global.AppRssConfigFilePath() + "RSSMenu.opml");
                XmlNodeList Nodelst = doc.SelectNodes("/opml/body/outline");
                foreach (XmlNode node in Nodelst)
                {
                    if (node.Attributes.GetNamedItem("title").InnerText == strTitle)
                    {
                        doc.RemoveChild(node);
                        break;
                    }
                }
                doc.Save(Global.AppRssConfigFilePath() + "RSSMenu.opml");
            }
            catch
            {
                return false;
            }
            return true;
        }
        /// <summary>
        /// 重命名分类
        /// </summary>
        /// <param name="strOldName"></param>
        /// <param name="strNewName"></param>
        /// <returns></returns>
        public static bool ChannelReName(string strOldName, string strNewName)
        {
            XmlDocument doc = new XmlDocument();
            try
            {
                doc.Load(Global.AppRssConfigFilePath() + "RSSMenu.opml");
                XmlNodeList Nodelst = doc.SelectNodes("/opml/body/outline");
                foreach (XmlNode node in Nodelst)
                {
                    if (node.Attributes.GetNamedItem("title").InnerText == strOldName)
                    {
                        node.Attributes.GetNamedItem("title").InnerText = strNewName;
                        if (node.Attributes.GetNamedItem("text") != null)
                            node.Attributes.GetNamedItem("text").InnerText = strNewName;
                        break;
                    }
                }
                doc.Save(Global.AppRssConfigFilePath() + "RSSMenu.opml");
            }
            catch
            {
                return false;
            }
            return true;
        }
        /// <summary>
        /// 添加RSS频道
        /// </summary>
        /// <param name="strChannel"></param>
        /// <param name="opml"></param>
        /// <returns></returns>
        public static bool RSSAdd(string strChannel, Opml opml)
        {
            XmlDocument doc = new XmlDocument();
            try
            {
                doc.Load(Global.AppRssConfigFilePath() + "RSSMenu.opml");
                XmlNodeList Nodelst = doc.SelectNodes("/opml/body/outline");
                foreach (XmlNode node in Nodelst)
                {
                    if (node.Attributes.GetNamedItem("title").InnerText == strChannel)
                    {
                        XmlNode nodeOpml = doc.SelectSingleNode("/opml/body/outline/outline").Clone();
                        nodeOpml.Attributes.GetNamedItem("id").InnerText = DateTime.Now.Ticks.ToString();
                        nodeOpml.Attributes.GetNamedItem("text").InnerText = opml.Text;
                        nodeOpml.Attributes.GetNamedItem("title").InnerText = opml.Text;
                        nodeOpml.Attributes.GetNamedItem("xmlUrl").InnerText = opml.XmlUrl;
                        nodeOpml.Attributes.GetNamedItem("description").InnerText = "";
                        nodeOpml.Attributes.GetNamedItem("flags").InnerText = "";
                        node.AppendChild(nodeOpml);
                        break;
                    }
                }
                doc.Save(Global.AppRssConfigFilePath() + "RSSMenu.opml");
            }
            catch
            {
                return false;
            }
            return true;
        }
        /// <summary>
        /// 删除频道
        /// </summary>
        /// <param name="strChannel"></param>
        /// <param name="opml"></param>
        /// <returns></returns>
        public static bool RSSDel(string strChannel, Opml opml)
        {
            XmlDocument doc = new XmlDocument();
            try
            {
                doc.Load(Global.AppRssConfigFilePath() + "RSSMenu.opml");
                XmlNodeList Nodelst = doc.SelectNodes("/opml/body/outline");
                bool finished = false;
                foreach (XmlNode node in Nodelst)
                {
                    if (node.Attributes.GetNamedItem("title").InnerText == strChannel)
                    {
                        foreach (XmlNode nodeOpml in node.ChildNodes)
                        {
                            if (nodeOpml.Attributes.GetNamedItem("text").InnerText == opml.Text)
                            {
                                node.RemoveChild(nodeOpml);
                                finished = true;
                                break;
                            }
                        }
                    }
                    if (finished)
                        break;
                }
                doc.Save(Global.AppRssConfigFilePath() + "RSSMenu.opml");
            }
            catch { return false; }
            return true;
        }
        /// <summary>
        /// 编辑频道信息
        /// </summary>
        /// <param name="strOldChannel">原来位置</param>
        /// <param name="strChannel">新位置</param>
        /// <param name="oldOpml"></param>
        /// <param name="opml"></param>
        /// <returns></returns>
        public static bool RSSEdit(string strOldChannel, string strChannel, Opml oldOpml, Opml opml)
        {
            if (strOldChannel == strChannel)
            {
                XmlDocument doc = new XmlDocument();
                try
                {
                    doc.Load(Global.AppRssConfigFilePath() + "RSSMenu.opml");
                    XmlNodeList Nodelst = doc.SelectNodes("/opml/body/outline");
                    bool finished = false;
                    foreach (XmlNode node in Nodelst)
                    {
                        if (node.Attributes.GetNamedItem("title").InnerText == strChannel)
                        {
                            foreach (XmlNode nodeOpml in node.ChildNodes)
                            {
                                if (nodeOpml.Attributes.GetNamedItem("text").InnerText == oldOpml.Text)
                                {
                                    nodeOpml.Attributes.GetNamedItem("text").InnerText = opml.Text;
                                    nodeOpml.Attributes.GetNamedItem("xmlUrl").InnerText = opml.XmlUrl; ;
                                    nodeOpml.Attributes.GetNamedItem("htmlUrl").InnerText = "";
                                    nodeOpml.Attributes.GetNamedItem("description").InnerText = opml.Text;
                                    finished = true;
                                    break;
                                }
                            }
                        }
                        if (finished)
                            break;
                    }
                    doc.Save(Global.AppRssConfigFilePath() + "RSSMenu.opml");
                }
                catch { return false; }
            }
            else
            {
                RSSDel(strOldChannel, oldOpml);
                RSSAdd(strChannel, opml);
            }
            return false;
        }
        /// <summary>
        /// 清除频道本地内容文件
        /// </summary>
        /// <param name="strChannel"></param>
        /// <param name="opml"></param>
        /// <returns></returns>
        public static bool RSSClear(string strChannel, Opml opml)
        {
            string Filename = Global.FormatUrl(opml.XmlUrl);
            File.Delete(Filename);
            if (!File.Exists(Filename))
                return true;
            return false;
        }
        /// <summary>
        /// 读取Opml文件绑定到TreeView上
        /// </summary>
        /// <param name="tvRSS"></param>
        public static void ReadOpmlToTreeView(TreeView tvRSS)
        {
            tvRSS.Nodes.Clear();
            XmlDocument doc = new XmlDocument();
            string menuFile = Global.AppRssConfigFilePath() + "RSSMenu.opml";
            if (!File.Exists(menuFile))
            {
                //文件不存在，初始化
                return;
            }
            try
            {
                doc.Load(menuFile);
            }
            catch
            {
                //文件被破坏，要修复
                return;
            }
            XmlNodeList nodeChannelList;
            nodeChannelList = doc.SelectNodes("/opml/body/outline");
            foreach (XmlNode xNode in nodeChannelList)
            {
                if (xNode.Attributes.GetNamedItem("title") == null || xNode.Attributes.GetNamedItem("title") == null)
                {
                    //文件结构不对
                    return;
                }
                RssTreeNode tvChannelNode = new RssTreeNode(xNode.Attributes.GetNamedItem("title").InnerText);
                Opml oChannel = new Opml();
                oChannel.ChannelTitle = tvChannelNode.Text;
                oChannel.Type = RssType.Channel;
                if (xNode.Attributes.GetNamedItem("id") != null)
                    oChannel.ID = xNode.Attributes.GetNamedItem("id").InnerText;
                oChannel.Title = oChannel.Text = tvChannelNode.Text;
                tvChannelNode.Opml = oChannel;
                if (xNode.HasChildNodes)
                {
                    XmlNodeList nodeRssList = xNode.ChildNodes;// doc.SelectNodes("/opml/body/outline/outline");
                    foreach (XmlNode xChileNode in nodeRssList)
                    {
                        if (xChileNode.Attributes.GetNamedItem("text") == null)
                        {
                            //文件结构不对
                            return;
                        }
                        RssTreeNode tvRssNode = new RssTreeNode(xChileNode.Attributes.GetNamedItem("text").InnerText);
                        Opml oRss = new Opml();
                        oRss.Type = RssType.Rss;
                        oRss.Title=oRss.Text = tvRssNode.Text;
                        
                        if (xChileNode.Attributes.GetNamedItem("id") != null)
                            oRss.ID = xChileNode.Attributes.GetNamedItem("id").InnerText;
                        if (xChileNode.Attributes.GetNamedItem("description") != null)
                            oRss.Copyright = xChileNode.Attributes.GetNamedItem("description").InnerText;
                        if (xChileNode.Attributes.GetNamedItem("pubDate") != null)
                            oRss.PubDate = xChileNode.Attributes.GetNamedItem("pubDate").InnerText;
                        if (xChileNode.Attributes.GetNamedItem("xmlUrl") != null)
                            oRss.XmlUrl = xChileNode.Attributes.GetNamedItem("xmlUrl").InnerText;
                        if (xChileNode.Attributes.GetNamedItem("copyright") != null)
                            oRss.Copyright = xChileNode.Attributes.GetNamedItem("copyright").InnerText;
                        if (xChileNode.Attributes.GetNamedItem("htmlUrl") != null)
                            oRss.PubDate = xChileNode.Attributes.GetNamedItem("htmlUrl").InnerText;
                        //tvRssNode.ImageIndex = 1;
                        //tvRssNode.SelectedImageIndex = 2;
                        tvRssNode.Opml = oRss;
                        tvChannelNode.Nodes.Add(tvRssNode);
                    }
                }
                //BindOpmlNodeToTreeNode(RssTreeNode, tvNode);
                tvRSS.Nodes.Add(tvChannelNode);
            }
        }
        private static void BindOpmlNodeToTreeNode(XmlNodeList xmlNodes, RssTreeNode tvNode)
        { }
        /// <summary>
        /// 返回Channel列表
        /// </summary>
        /// <returns></returns>
        public static List<OpmlChannel> GetChannelList()
        {
            XmlDocument doc = new XmlDocument();
            string menuFile = Global.AppRssConfigFilePath() + "RSSMenu.opml";
            if (!File.Exists(menuFile))
            {
                //文件不存在，初始化
                return null;
            }
            try
            {
                doc.Load(menuFile);
            }
            catch
            {
                //文件被破坏，要修复
                return null;
            }
            XmlNodeList nodeChannelList;
            nodeChannelList = doc.SelectNodes("/opml/body/outline");
            List<OpmlChannel> oChannelList = new List<OpmlChannel>();
            foreach (XmlNode xNode in nodeChannelList)
            {
                OpmlChannel oChannel = new OpmlChannel();
                if (xNode.Attributes.GetNamedItem("title") != null && xNode.Attributes.GetNamedItem("id") != null)
                {
                    oChannel.Title = xNode.Attributes.GetNamedItem("title").InnerText;
                    oChannel.ID = xNode.Attributes.GetNamedItem("id").InnerText;
                    oChannelList.Add(oChannel);
                }
                
            }
            return oChannelList;
        }
        /// <summary>
        /// 返回单个Channel节点
        /// </summary>
        /// <param name="strChannel"></param>
        /// <returns></returns>
        public static XmlNode GetChannelNode(string strChannel)
        {
            XmlDocument doc = new XmlDocument();
            string menuFile = Global.AppRssConfigFilePath() + "RSSMenu.opml";
            if (!File.Exists(menuFile))
            {
                //文件不存在，初始化
                return null;
            }
            try
            {
                doc.Load(menuFile);
            }
            catch
            {
                //文件被破坏，要修复
                return null;
            }
            XmlNodeList nodeChannelList;
            nodeChannelList = doc.SelectNodes("/opml/body/outline");
            XmlNode ChannelNode = null;
            foreach (XmlNode xNode in nodeChannelList)
            {
                if (xNode.Attributes.GetNamedItem("title") != null && xNode.Attributes.GetNamedItem("title").InnerText ==strChannel)
                {
                    ChannelNode = xNode;
                    break;                    
                }
            }
            return ChannelNode;
        }
    }
}

						