using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Collections;
using System.Xml;
using System.IO;



/// <summary>
/// XMLParser 简易XML解析方法

///string str = File.ReadAllText(@"config.xml", Encoding.UTF8);   //读取XML文件
/////MessageBox.Show(str);
///XMLParser xmlParser = new XMLParser();
///XMLNode xn = xmlParser.Parse(str);
///server = xn.GetValue("items>0>server>0>_text");
///            database = xn.GetValue("items>0>database>0>_text");
///            XMLNode temp = xn.GetNode("items>0>res>0");
///string basePath = temp.GetValue("@basePath");//或直接 basePath=xn.GetValue("items>0>res>0>@basePath");
///当然xml文件内容为：

///<? xml version="1.0" encoding="utf-8" ?>
///<items>
///  <server>192.168.52.148</server>
///  <database>world</database>
///  <port>3306</port>
///  <uid>wtx</uid>
///  <password>123456</password>
///  <res basePath = "d:\Resources" language="zh_CN" />
///  <res basePath1 = "d:\Resources" language="zh_CN" />
///  <res basePath2 = "d:\Resources" language="zh_CN" />
/// </items>
/// </summary>
namespace Job_JieFeng_FTP
{


    public class NoRepeatStrList : List<string>
    {
        public void _add(string str)
        {
            if (IndexOf(str) < 0) Add(str);
        }
        public string getstr()
        {
            var result = "";
            foreach (string line in this)
            {
                if (result != "") result += "\r\n";
                result += line;
            }
            return result;
        }
    }

    /*
    public class XMLParser
    {
        private char LT = '<';
        private char GT = '>';
        private char SPACE = ' ';
        private char QUOTE = '"';
        private char QUOTE2 = '\'';
        private char SLASH = '/';
        private char QMARK = '?';
        private char EQUALS = '=';
        private char EXCLAMATION = '!';
        private char DASH = '-';
        //private char SQL  = '[';
        private char SQR = ']';

        public XMLNode Parse(string content)
        {
            XMLNode rootNode = new XMLNode();
            rootNode["_text"] = "";

            string nodeContents = "";

            bool inElement = false;
            bool collectNodeName = false;
            bool collectAttributeName = false;
            bool collectAttributeValue = false;
            bool quoted = false;
            string attName = "";
            string attValue = "";
            string nodeName = "";
            string textValue = "";

            bool inMetaTag = false;
            bool inComment = false;
            bool inCDATA = false;

            XMLNodeList parents = new XMLNodeList();

            XMLNode currentNode = rootNode;

            for (int i = 0; i < content.Length; i++)
            {
                char c = content[i];
                char cn = '~';  // unused char
                char cnn = '~'; // unused char
                char cp = '~';  // unused char

                if ((i + 1) < content.Length) cn = content[i + 1];
                if ((i + 2) < content.Length) cnn = content[i + 2];
                if (i > 0) cp = content[i - 1];

                if (inMetaTag)
                {
                    if (c == QMARK && cn == GT)
                    {
                        inMetaTag = false;
                        i++;
                    }

                    continue;
                }
                else
                {
                    if (!quoted && c == LT && cn == QMARK)
                    {
                        inMetaTag = true;
                        continue;
                    }
                }

                if (inComment)
                {
                    if (cp == DASH && c == DASH && cn == GT)
                    {
                        inComment = false;
                        i++;
                    }

                    continue;
                }
                else
                {
                    if (!quoted && c == LT && cn == EXCLAMATION)
                    {

                        if (content.Length > i + 9 && content.Substring(i, 9) == "<![CDATA[")
                        {
                            inCDATA = true;
                            i += 8;
                        }
                        else
                        {
                            inComment = true;
                        }

                        continue;
                    }
                }

                if (inCDATA)
                {
                    if (c == SQR && cn == SQR && cnn == GT)
                    {
                        inCDATA = false;
                        i += 2;
                        continue;
                    }

                    textValue += c;
                    continue;
                }


                if (inElement)
                {
                    if (collectNodeName)
                    {
                        if (c == SPACE)
                        {
                            collectNodeName = false;
                        }
                        else if (c == GT)
                        {
                            collectNodeName = false;
                            inElement = false;
                        }



                        if (!collectNodeName && nodeName.Length > 0)
                        {
                            if (nodeName[0] == SLASH)
                            {
                                // close tag
                                if (textValue.Length > 0)
                                {
                                    currentNode["_text"] += textValue;
                                }

                                textValue = "";
                                nodeName = "";
                                currentNode = parents.Pop();
                            }
                            else
                            {
                                if (textValue.Length > 0)
                                {
                                    currentNode["_text"] += textValue;
                                }

                                textValue = "";
                                XMLNode newNode = new XMLNode();
                                newNode["_text"] = "";
                                newNode["_name"] = nodeName;

                                if (currentNode[nodeName] == null)
                                {
                                    currentNode[nodeName] = new XMLNodeList();
                                }

                                XMLNodeList a = (XMLNodeList)currentNode[nodeName];
                                a.Push(newNode);
                                parents.Push(currentNode);
                                currentNode = newNode;
                                nodeName = "";
                            }
                        }
                        else
                        {
                            nodeName += c;
                        }
                    }
                    else
                    {
                        if (!quoted && c == SLASH && cn == GT)
                        {
                            inElement = false;
                            collectAttributeName = false;
                            collectAttributeValue = false;
                            if (attName.Length > 0)
                            {
                                if (attValue.Length > 0)
                                {
                                    currentNode["@" + attName] = attValue;
                                }
                                else
                                {
                                    currentNode["@" + attName] = true;
                                }
                            }

                            i++;
                            currentNode = parents.Pop();
                            attName = "";
                            attValue = "";
                        }
                        else if (!quoted && c == GT)
                        {
                            inElement = false;
                            collectAttributeName = false;
                            collectAttributeValue = false;
                            if (attName.Length > 0)
                            {
                                currentNode["@" + attName] = attValue;
                            }

                            attName = "";
                            attValue = "";
                        }
                        else
                        {
                            if (collectAttributeName)
                            {
                                if (c == SPACE || c == EQUALS)
                                {
                                    collectAttributeName = false;
                                    collectAttributeValue = true;
                                }
                                else
                                {
                                    attName += c;
                                }
                            }
                            else if (collectAttributeValue)
                            {
                                if (c == QUOTE || c == QUOTE2)
                                {
                                    if (quoted)
                                    {
                                        collectAttributeValue = false;
                                        currentNode["@" + attName] = attValue;
                                        attValue = "";
                                        attName = "";
                                        quoted = false;
                                    }
                                    else
                                    {
                                        quoted = true;
                                    }
                                }
                                else
                                {
                                    if (quoted)
                                    {
                                        attValue += c;
                                    }
                                    else
                                    {
                                        if (c == SPACE)
                                        {
                                            collectAttributeValue = false;
                                            currentNode["@" + attName] = attValue;
                                            attValue = "";
                                            attName = "";
                                        }
                                    }
                                }
                            }
                            else if (c == SPACE)
                            {

                            }
                            else
                            {
                                collectAttributeName = true;
                                attName = "" + c;
                                attValue = "";
                                quoted = false;
                            }
                        }
                    }
                }
                else
                {
                    if (c == LT)
                    {
                        inElement = true;
                        collectNodeName = true;
                    }
                    else
                    {
                        textValue += c;
                    }
                }
            }

            return rootNode;
        }

        /// <summary>
        /// 传入一个node列表 和一个 路径 一个值
        /// 返回节点列表里面，【该路径=该值】的节点
        /// </summary>
        /// <param name="nodelist"></param>
        /// <param name="path"></param>
        /// <param name="value"></param>
        /// <param name="xn"></param>
        /// <returns></returns>
        public static bool getNode(XMLNodeList nodelist, string path, string value,out XMLNode xn) {
            xn = new XMLNode();
            foreach (XMLNode nd in nodelist) {
                if (nd.GetValue(path) == value) {
                    xn = nd;
                    return true;
                }
            }
            
            return false;

        }
    }

    public class XMLNode : Hashtable
        {
            public XMLNodeList GetNodeList(string path)
            {
                return GetObject(path) as XMLNodeList;
            }

            public XMLNode GetNode(string path)
            {
                return GetObject(path) as XMLNode;
            }

            public string GetValue(string path)
            {
                return GetObject(path) as string;
            }

            private object GetObject(string path)
            {
                string[] bits = path.Split('>');
                XMLNode currentNode = this;
                XMLNodeList currentNodeList = null;
                bool listMode = false;
                object ob;

                for (int i = 0; i < bits.Length; i++)
                {
                    if (listMode)
                    {
                        currentNode = (XMLNode)currentNodeList[int.Parse(bits[i])];
                        ob = currentNode;
                        listMode = false;
                    }
                    else
                    {
                        ob = currentNode[bits[i]];

                        if (ob is ArrayList)
                        {
                            currentNodeList = (XMLNodeList)(ob as ArrayList);
                            listMode = true;
                        }
                        else
                        {
                            // reached a leaf node/attribute
                            if (i != (bits.Length - 1))
                            {
                                // unexpected leaf node
                                string actualPath = "";
                                for (int j = 0; j <= i; j++)
                                {
                                    actualPath = actualPath + ">" + bits[j];
                                }

                                //Debug.Log("xml path search truncated. Wanted: " + path + " got: " + actualPath);
                            }

                            return ob;
                        }
                    }
                }

                if (listMode)
                    return currentNodeList;
                else
                    return currentNode;
            }


    }

    public class XMLNodeList : ArrayList
        {
            public XMLNode Pop()
            {
                XMLNode item = null;

                item = (XMLNode)this[this.Count - 1];
                this.Remove(item);

                return item;
            }

            public int Push(XMLNode item)
            {
                Add(item);

                return this.Count;
            }
        }
    */
    /// <summary>
    /// Author: jiangxiaoqiang
    /// </summary>
    public class XmlReader
    {
        //========================================================= //
        #region 获取XmlDocument对象
        /// <summary>
        /// 根据XML文件内容获取XmlDocument对象
        /// </summary>
        /// <param name="xmlFileContent"></param>
        /// <returns></returns>
        public static XmlDocument GetXmlDocByXmlContent(string xmlFileContent)
        {
            if (string.IsNullOrEmpty(xmlFileContent))
            {
                return null;
            }
            var xDoc = new XmlDocument();
            try
            {
                xDoc.LoadXml(xmlFileContent);
            }
            catch
            {
                xDoc = null;
            }
            return xDoc;
        }
        /// <summary>
        /// 根据XML文件路径获取XmlDocument对象
        /// </summary>
        /// <param name="xmlFilePath"></param>
        /// <returns></returns>
        public static XmlDocument GetXmlDocByFilePath(string xmlFilePath)
        {
            if (string.IsNullOrEmpty(xmlFilePath) || !File.Exists(xmlFilePath))
            {
                return null;
            }
            var xDoc = new XmlDocument();
            try
            {
                xDoc.Load(xmlFilePath);
            }
            catch
            {
                throw new Exception(string.Format("请确认该XML文件格式正确，路径为：{0}", xmlFilePath));
            }
            return xDoc;
        }
        #endregion
        //========================================================= //
        //========================================================= //
        #region 获取XML节点（或节点列表）
        /// <summary>
        /// 获取父节点下指定节点名称的第一个子节点
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <param name="childNodeName"></param>
        /// <returns></returns>
        public static XmlNode GetFirstChildNodeByName(XmlNode parentXmlNode, string childNodeName, XmlNamespaceManager npm = null)
        {
            var childXmlNodes = GetChildNodesByName(parentXmlNode, childNodeName,npm);
            if (childXmlNodes != null && childXmlNodes.Count > 0)
            {
                return childXmlNodes[0];
            }
            return null;
        }
        /// <summary>
        /// 获取父节点下指定节点名称的子节点列表
        /// </summary>
        /// <param name="parentXmlNode">父节点</param>
        /// <param name="nodeName">节点名称</param>
        /// <returns></returns>
        public static XmlNodeList GetChildNodesByName(XmlNode parentXmlNode, string nodeName, XmlNamespaceManager npm = null)
        {
            if (parentXmlNode == null || string.IsNullOrEmpty(nodeName))
            {
                return null;
            }
            return GetChildNodesByXPathExpr(parentXmlNode, string.Format(".//{0}", nodeName), npm);
            //return GetChildNodesByXPathExpr(parentXmlNode, string.Format("//{0}", nodeName), npm);
        }
        /// <summary>
        /// 获取父节点下满足xpathExpr表达式的XML子节点列表
        /// </summary>
        /// <param name="parentXmlNode">父节点</param>
        /// <param name="xpathExpr"></param>
        /// <returns></returns>  
        public static XmlNodeList GetChildNodesByXPathExpr(XmlNode parentXmlNode, string xpathExpr, XmlNamespaceManager npm=null)
        {
            if (parentXmlNode == null || string.IsNullOrEmpty(xpathExpr))
            {
                return null;
            }
            return parentXmlNode.SelectNodes(xpathExpr,npm);
        }
        /// <summary>
        /// 获取父节点下的第一个子节点
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <returns></returns>
        public static XmlNode GetFirstChildNode(XmlNode parentXmlNode)
        {
            var childXmlNodes = GetChildNodes(parentXmlNode);
            if (childXmlNodes != null && childXmlNodes.Count > 0)
            {
                return childXmlNodes[0];
            }
            return null;
        }
        /// <summary>
        /// 获取父节点的子节点列表
        /// </summary>
        /// <param name="parentXmlNode">父节点</param>
        /// <returns></returns>
        public static XmlNodeList GetChildNodes(XmlNode parentXmlNode)
        {
            return parentXmlNode == null ? null : parentXmlNode.ChildNodes;
        }
        #endregion
        //========================================================= //
        //========================================================= //
        #region 读取节点属性值
        /// <summary>
        /// 读取某个XML节点的属性值（根据属性名）
        /// </summary>
        /// <param name="xmlNode"></param>
        /// <param name="attrName"></param>
        /// <returns></returns>
        public static string ReadAttrValue(XmlNode xmlNode, string attrName)
        {
            var xmlElement = xmlNode as XmlElement;
            return xmlElement == null ? null : xmlElement.GetAttribute(attrName);
        }
        /// <summary>
        /// 读取父节点下指定节点名和属性名的第一个子节点的属性值
        /// </summary>
        /// <param name="parentXmlNode">XML父节点</param>
        /// <param name="childNodeName">节点名称</param>
        /// <param name="attrName">属性名</param>
        /// <returns></returns>
        public static string ReadFirstAttrValue(XmlNode parentXmlNode, string childNodeName, string attrName)
        {
            var attrVals = ReadAttrValues(parentXmlNode, childNodeName, attrName);
            return (attrVals == null || attrVals.Length == 0) ? null : attrVals[0];
        }
        /// <summary>
        /// 读取父节点下指定节点名和属性名的所有子节点的该属性值的数组
        /// </summary>
        /// <param name="parentXmlNode">XML文档</param>
        /// <param name="childNodeName">节点名称</param>
        /// <param name="attrName">属性名</param>
        /// <returns></returns>
        public static string[] ReadAttrValues(XmlNode parentXmlNode, string childNodeName, string attrName, XmlNamespaceManager npm = null)
        {
            if (parentXmlNode == null || string.IsNullOrEmpty(childNodeName) || string.IsNullOrEmpty(attrName))
            {
                return null;
            }
            var xpathExpr = string.Format("//{0}[@{1}]", childNodeName, attrName);
            var nodes = GetChildNodesByXPathExpr(parentXmlNode, xpathExpr, npm);
            if (nodes != null && nodes.Count > 0)
            {
                var nodeCount = nodes.Count;
                var attrVals = new string[nodeCount];
                for (var i = 0; i < nodeCount; i++)
                {
                    attrVals[i] = ((XmlElement)nodes[i]).GetAttribute(attrName);
                }
                return attrVals;
            }
            return null;
        }

        #endregion

        #region 扩展方法

        /// <summary>
        /// 返回一个节点，这个节点是【作为参数的父节点】下面的所有【名称为NodeName】的子节点当中，第一个具有【指定属性名AttrName=指定属性值AttrValue】的
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <param name="AttrName"></param>
        /// <param name="AttrValue"></param>
        /// <returns></returns>
        public static XmlNode getNodeByAttr(XmlNode parentXmlNode,string NodeName, string AttrName, string AttrValue, XmlNamespaceManager npm = null)
        {
            XmlNodeList nodelist = GetChildNodesByName(parentXmlNode, NodeName, npm);
            foreach (XmlNode _item in nodelist)
            {
                var _attrvalue = ReadAttrValue(_item, AttrName);
                if (_attrvalue == AttrValue)
                {
                    return _item;
                }
            }
            return null;
        }

        //
        public static string getmlstr(XmlNode node)
        {
            var stringarray = XmlReader.ReadChildNodeTexts(node);
            var result = "";
            foreach (string line in stringarray)
            {
                if (result != "") result += "\r\n";
                result += line;
            }
            return result;
        }

        public static string getmlstr(XmlNodeList nodeList)
        {
            var strlist = new NoRepeatStrList();
            
            foreach (XmlNode node in nodeList) {
                var _r = getmlstr(node);
                strlist._add(_r);
            }

            return strlisttostr(strlist);
        }

        public static string strlisttostr(List<string> strlist) {
            var result = "";
            foreach (string line in strlist)
            {
                if (result != "") result += "\r\n";
                result += line;
            }
            return result;
        }
        #endregion
        //========================================================= //
        //========================================================= //
        #region 读取父节点下的子节点的文本内容
        /// <summary>
        /// 读取父节点下指定节点名的第一个子节点的文本
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <param name="childNodeName"></param>
        /// <returns></returns>
        public static string ReadFirstChildNodeTextByName(XmlNode parentXmlNode, string childNodeName, XmlNamespaceManager npm = null)
        {
            var childNodeTexts = ReadChildNodeTextsByName(parentXmlNode, childNodeName,npm);
            if (childNodeTexts != null && childNodeTexts.Length > 0)
            {
                return childNodeTexts[0];
            }
            return null;
        }
        /// <summary>
        /// 读取第N个指定节点名的子节点的文本
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <param name="childNodeName"></param>
        /// <returns></returns>
        public static string ReadNChildNodeTextByName(XmlNode parentXmlNode, string childNodeName,int N)
        {
            var childNodeTexts = ReadChildNodeTextsByName(parentXmlNode, childNodeName);
            if (childNodeTexts != null && childNodeTexts.Length > N-1)
            {
                return childNodeTexts[N];
            }
            return null;
        }
        /// <summary>
        /// 读取父节点下指定节点名的所有子节点的文本数组
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <param name="childNodeName"></param>
        /// <returns></returns>
        public static string[] ReadChildNodeTextsByName(XmlNode parentXmlNode, string childNodeName, XmlNamespaceManager npm = null)
        {
            if (parentXmlNode == null || string.IsNullOrEmpty(childNodeName))
            {
                return null;
            }
            var xpathExpr = string.Format(".//{0}", childNodeName);
            var childNodes = GetChildNodesByXPathExpr(parentXmlNode, xpathExpr, npm);
            if (childNodes != null && childNodes.Count > 0)
            {
                var nodeCount = childNodes.Count;
                var nodeTexts = new string[nodeCount];
                for (var i = 0; i < nodeCount; i++)
                {
                    nodeTexts[i] = childNodes[i].InnerText;
                }
                return nodeTexts;
            }
            return null;
        }
        /// <summary>
        /// 读取父节点下的第一个子节点的文本
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <returns></returns>
        public static string ReadFirstChildNodeText(XmlNode parentXmlNode)
        {
            var childNodeTexts = ReadChildNodeTexts(parentXmlNode);
            if (childNodeTexts != null && childNodeTexts.Length > 0)
            {
                return childNodeTexts[0];
            }
            return null;
        }
        /// <summary>
        /// 读取父节点下的所有子节点的文本数组
        /// </summary>
        /// <param name="parentXmlNode"></param>
        /// <returns></returns>
        public static string[] ReadChildNodeTexts(XmlNode parentXmlNode)
        {
            if (parentXmlNode == null)
            {
                return null;
            }
            var childNodes = GetChildNodes(parentXmlNode);
            if (childNodes != null && childNodes.Count > 0)
            {
                var nodeCount = childNodes.Count;
                var nodeTexts = new string[nodeCount];
                for (var i = 0; i < nodeCount; i++)
                {
                    nodeTexts[i] = childNodes[i].InnerText;
                }
                return nodeTexts;
            }
            return null;
        }
        public static string ReadChildNodeTextsStr(XmlNode parentXmlNode)
        {
            if (parentXmlNode == null)
            {
                return null;
            }
            var result = "";
            var childNodes = GetChildNodes(parentXmlNode);
            if (childNodes != null && childNodes.Count > 0)
            {
                var nodeCount = childNodes.Count;
                var nodeTexts = new string[nodeCount];
                for (var i = 0; i < nodeCount; i++)
                {
                    nodeTexts[i] = childNodes[i].InnerText;
                }

                foreach (string s in nodeTexts) {
                    if (result != "") result += "\r\n";
                    result += s;
                }
                return result;
            }
            return null;
        }
        /// <summary>
        /// 读取XML节点文本
        /// </summary>
        /// <param name="xmlNode"></param>
        /// <returns></returns>
        public static string ReadNodeText(XmlNode xmlNode)
        {
            if (xmlNode == null)
            {
                return null;
            }
            return xmlNode.InnerText;
        }
        #endregion
        //========================================================= //
    }

}