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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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namespace FairyGUI.Utils
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{
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public enum XMLTagType
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{
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Start,
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End,
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Void,
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CDATA,
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Comment,
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Instruction
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}
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/// <summary>
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///
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/// </summary>
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public class XMLIterator
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{
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public static string tagName;
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public static XMLTagType tagType;
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public static string lastTagName;
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static string source;
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static int sourceLen;
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static int parsePos;
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static int tagPos;
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static int tagLength;
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static int lastTagEnd;
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static bool attrParsed;
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static bool lowerCaseName;
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static StringBuilder buffer = new StringBuilder();
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static Dictionary<string, string> attributes = new Dictionary<string, string>();
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const string CDATA_START = "<![CDATA[";
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const string CDATA_END = "]]>";
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const string COMMENT_START = "<!--";
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const string COMMENT_END = "-->";
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public static void Begin(string source, bool lowerCaseName = false)
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{
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XMLIterator.source = source;
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XMLIterator.lowerCaseName = lowerCaseName;
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sourceLen = source.Length;
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parsePos = 0;
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lastTagEnd = 0;
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tagPos = 0;
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tagLength = 0;
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tagName = null;
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}
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public static bool NextTag()
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{
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int pos;
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char c;
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tagType = XMLTagType.Start;
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buffer.Length = 0;
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lastTagEnd = parsePos;
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attrParsed = false;
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lastTagName = tagName;
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while ((pos = source.IndexOf('<', parsePos)) != -1)
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{
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parsePos = pos;
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pos++;
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if (pos == sourceLen)
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break;
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c = source[pos];
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if (c == '!')
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{
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if (sourceLen > pos + 7 && source.Substring(pos - 1, 9) == CDATA_START)
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{
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pos = source.IndexOf(CDATA_END, pos);
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tagType = XMLTagType.CDATA;
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tagName = string.Empty;
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tagPos = parsePos;
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if (pos == -1)
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tagLength = sourceLen - parsePos;
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else
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tagLength = pos + 3 - parsePos;
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parsePos += tagLength;
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return true;
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}
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else if (sourceLen > pos + 2 && source.Substring(pos - 1, 4) == COMMENT_START)
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{
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pos = source.IndexOf(COMMENT_END, pos);
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tagType = XMLTagType.Comment;
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tagName = string.Empty;
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tagPos = parsePos;
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if (pos == -1)
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tagLength = sourceLen - parsePos;
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else
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tagLength = pos + 3 - parsePos;
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parsePos += tagLength;
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return true;
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}
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else
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{
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pos++;
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tagType = XMLTagType.Instruction;
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}
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}
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else if (c == '/')
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{
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pos++;
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tagType = XMLTagType.End;
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}
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else if (c == '?')
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{
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pos++;
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tagType = XMLTagType.Instruction;
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}
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for (; pos < sourceLen; pos++)
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{
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c = source[pos];
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if (Char.IsWhiteSpace(c) || c == '>' || c == '/')
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break;
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}
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if (pos == sourceLen)
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break;
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buffer.Append(source, parsePos + 1, pos - parsePos - 1);
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if (buffer.Length > 0 && buffer[0] == '/')
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buffer.Remove(0, 1);
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bool singleQuoted = false, doubleQuoted = false;
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int possibleEnd = -1;
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for (; pos < sourceLen; pos++)
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{
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c = source[pos];
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if (c == '"')
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{
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if (!singleQuoted)
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doubleQuoted = !doubleQuoted;
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}
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else if (c == '\'')
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{
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if (!doubleQuoted)
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singleQuoted = !singleQuoted;
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}
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if (c == '>')
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{
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if (!(singleQuoted || doubleQuoted))
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{
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possibleEnd = -1;
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break;
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}
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possibleEnd = pos;
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}
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else if (c == '<')
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break;
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}
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if (possibleEnd != -1)
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pos = possibleEnd;
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if (pos == sourceLen)
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break;
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if (source[pos - 1] == '/')
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tagType = XMLTagType.Void;
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tagName = buffer.ToString();
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if (lowerCaseName)
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tagName = tagName.ToLower();
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tagPos = parsePos;
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tagLength = pos + 1 - parsePos;
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parsePos += tagLength;
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return true;
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}
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tagPos = sourceLen;
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tagLength = 0;
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tagName = null;
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return false;
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}
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public static string GetTagSource()
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{
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return source.Substring(tagPos, tagLength);
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}
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public static string GetRawText(bool trim = false)
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{
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if (lastTagEnd == tagPos)
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return string.Empty;
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else if (trim)
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{
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int i = lastTagEnd;
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for (; i < tagPos; i++)
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{
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char c = source[i];
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if (!char.IsWhiteSpace(c))
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break;
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}
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if (i == tagPos)
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return string.Empty;
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else
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return source.Substring(i, tagPos - i).TrimEnd();
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}
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else
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return source.Substring(lastTagEnd, tagPos - lastTagEnd);
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}
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public static string GetText(bool trim = false)
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{
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if (lastTagEnd == tagPos)
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return string.Empty;
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else if (trim)
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{
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int i = lastTagEnd;
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for (; i < tagPos; i++)
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{
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char c = source[i];
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if (!char.IsWhiteSpace(c))
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break;
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}
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if (i == tagPos)
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return string.Empty;
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else
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return XMLUtils.DecodeString(source.Substring(i, tagPos - i).TrimEnd());
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}
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else
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return XMLUtils.DecodeString(source.Substring(lastTagEnd, tagPos - lastTagEnd));
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}
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public static bool HasAttribute(string attrName)
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{
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if (!attrParsed)
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{
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attributes.Clear();
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ParseAttributes(attributes);
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attrParsed = true;
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}
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return attributes.ContainsKey(attrName);
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}
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public static string GetAttribute(string attrName)
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{
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if (!attrParsed)
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{
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attributes.Clear();
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ParseAttributes(attributes);
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attrParsed = true;
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}
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string value;
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if (attributes.TryGetValue(attrName, out value))
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return value;
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else
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return null;
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}
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public static string GetAttribute(string attrName, string defValue)
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{
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string ret = GetAttribute(attrName);
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if (ret != null)
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return ret;
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else
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return defValue;
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}
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public static int GetAttributeInt(string attrName)
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{
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return GetAttributeInt(attrName, 0);
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}
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public static int GetAttributeInt(string attrName, int defValue)
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{
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string value = GetAttribute(attrName);
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if (value == null || value.Length == 0)
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return defValue;
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int ret;
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if (int.TryParse(value, out ret))
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return ret;
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else
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return defValue;
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}
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public static float GetAttributeFloat(string attrName)
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{
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return GetAttributeFloat(attrName, 0);
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}
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public static float GetAttributeFloat(string attrName, float defValue)
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{
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string value = GetAttribute(attrName);
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if (value == null || value.Length == 0)
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return defValue;
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float ret;
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if (float.TryParse(value, out ret))
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return ret;
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else
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return defValue;
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}
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public static bool GetAttributeBool(string attrName)
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{
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return GetAttributeBool(attrName, false);
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}
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public static bool GetAttributeBool(string attrName, bool defValue)
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{
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string value = GetAttribute(attrName);
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if (value == null || value.Length == 0)
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return defValue;
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bool ret;
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if (bool.TryParse(value, out ret))
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return ret;
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else
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return defValue;
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}
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public static Dictionary<string, string> GetAttributes(Dictionary<string, string> result)
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{
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if (result == null)
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result = new Dictionary<string, string>();
|
|
|
|
|
|
|
|
|
|
|
|
if (attrParsed)
|
|
|
|
|
|
{
|
|
|
|
|
|
foreach (KeyValuePair<string, string> kv in attributes)
|
|
|
|
|
|
result[kv.Key] = kv.Value;
|
|
|
|
|
|
}
|
|
|
|
|
|
else //这里没有先ParseAttributes再赋值给result是为了节省复制的操作
|
|
|
|
|
|
ParseAttributes(result);
|
|
|
|
|
|
|
|
|
|
|
|
return result;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public static Hashtable GetAttributes(Hashtable result)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (result == null)
|
|
|
|
|
|
result = new Hashtable();
|
|
|
|
|
|
|
|
|
|
|
|
if (attrParsed)
|
|
|
|
|
|
{
|
|
|
|
|
|
foreach (KeyValuePair<string, string> kv in attributes)
|
|
|
|
|
|
result[kv.Key] = kv.Value;
|
|
|
|
|
|
}
|
|
|
|
|
|
else //这里没有先ParseAttributes再赋值给result是为了节省复制的操作
|
|
|
|
|
|
ParseAttributes(result);
|
|
|
|
|
|
|
|
|
|
|
|
return result;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void ParseAttributes(IDictionary attrs)
|
|
|
|
|
|
{
|
|
|
|
|
|
string attrName;
|
|
|
|
|
|
int valueStart;
|
|
|
|
|
|
int valueEnd;
|
|
|
|
|
|
bool waitValue = false;
|
|
|
|
|
|
int quoted;
|
|
|
|
|
|
buffer.Length = 0;
|
|
|
|
|
|
int i = tagPos;
|
|
|
|
|
|
int attrEnd = tagPos + tagLength;
|
|
|
|
|
|
|
|
|
|
|
|
if (i < attrEnd && source[i] == '<')
|
|
|
|
|
|
{
|
|
|
|
|
|
for (; i < attrEnd; i++)
|
|
|
|
|
|
{
|
|
|
|
|
|
char c = source[i];
|
|
|
|
|
|
if (Char.IsWhiteSpace(c) || c == '>' || c == '/')
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
for (; i < attrEnd; i++)
|
|
|
|
|
|
{
|
|
|
|
|
|
char c = source[i];
|
|
|
|
|
|
if (c == '=')
|
|
|
|
|
|
{
|
|
|
|
|
|
valueStart = -1;
|
|
|
|
|
|
valueEnd = -1;
|
|
|
|
|
|
quoted = 0;
|
|
|
|
|
|
for (int j = i + 1; j < attrEnd; j++)
|
|
|
|
|
|
{
|
|
|
|
|
|
char c2 = source[j];
|
|
|
|
|
|
if (Char.IsWhiteSpace(c2))
|
|
|
|
|
|
{
|
|
|
|
|
|
if (valueStart != -1 && quoted == 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
valueEnd = j - 1;
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
else if (c2 == '>')
|
|
|
|
|
|
{
|
|
|
|
|
|
if (quoted == 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
valueEnd = j - 1;
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
else if (c2 == '"')
|
|
|
|
|
|
{
|
|
|
|
|
|
if (valueStart != -1)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (quoted != 1)
|
|
|
|
|
|
{
|
|
|
|
|
|
valueEnd = j - 1;
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
quoted = 2;
|
|
|
|
|
|
valueStart = j + 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
else if (c2 == '\'')
|
|
|
|
|
|
{
|
|
|
|
|
|
if (valueStart != -1)
|
|
|
|
|
|
{
|
|
|
|
|
|
if (quoted != 2)
|
|
|
|
|
|
{
|
|
|
|
|
|
valueEnd = j - 1;
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
quoted = 1;
|
|
|
|
|
|
valueStart = j + 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
else if (valueStart == -1)
|
|
|
|
|
|
{
|
|
|
|
|
|
valueStart = j;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (valueStart != -1 && valueEnd != -1)
|
|
|
|
|
|
{
|
|
|
|
|
|
attrName = buffer.ToString();
|
|
|
|
|
|
if (lowerCaseName)
|
|
|
|
|
|
attrName = attrName.ToLower();
|
|
|
|
|
|
buffer.Length = 0;
|
|
|
|
|
|
attrs[attrName] = XMLUtils.DecodeString(source.Substring(valueStart, valueEnd - valueStart + 1));
|
|
|
|
|
|
i = valueEnd + 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
else if (!Char.IsWhiteSpace(c))
|
|
|
|
|
|
{
|
|
|
|
|
|
if (waitValue || c == '/' || c == '>')
|
|
|
|
|
|
{
|
|
|
|
|
|
if (buffer.Length > 0)
|
|
|
|
|
|
{
|
|
|
|
|
|
attrName = buffer.ToString();
|
|
|
|
|
|
if (lowerCaseName)
|
|
|
|
|
|
attrName = attrName.ToLower();
|
|
|
|
|
|
attrs[attrName] = string.Empty;
|
|
|
|
|
|
buffer.Length = 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
waitValue = false;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (c != '/' && c != '>')
|
|
|
|
|
|
buffer.Append(c);
|
|
|
|
|
|
}
|
|
|
|
|
|
else
|
|
|
|
|
|
{
|
|
|
|
|
|
if (buffer.Length > 0)
|
|
|
|
|
|
waitValue = true;
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
