2013-11-03 23:53:49 +13:00
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#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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2014-05-13 21:06:40 +12:00
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Copyright (C) 2007-2014 ShareX Developers
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2013-11-03 23:53:49 +13:00
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using System;
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using System.Collections.Generic;
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namespace UploadersLib.HelperClasses
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{
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public class CustomUploaderParse
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{
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private List<string> regexpResult = new List<string>();
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private string lastOperation;
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private string ReturnLink(string str)
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{
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string link = "";
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int search;
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for (int i = 0; i < str.Length; i++)
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{
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search = CheckSyntax(str, i, ref link);
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if (search > 0)
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{
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i = search;
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}
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}
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return link;
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}
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private int CheckSyntax(string str, int i, ref string link)
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{
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int search = CheckString(str, i);
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if (search > 0)
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{
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link += ReturnString(str, i, search);
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return search;
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}
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search = CheckRegexp(str, i);
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if (search > 0)
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{
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link += ReturnRegexp(str, i, search);
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return search;
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}
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search = CheckConditional(str, i);
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if (search > 0)
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{
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link += ReturnConditional(str, i, search);
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return search;
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}
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return 0;
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}
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private int CheckString(string str, int start)
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{
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if (str[start] == '"')
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{
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for (int i = start + 1; i < str.Length; i++)
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{
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//Console.Write(str[i].ToString());
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if (str[i] == '"')
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{
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return i;
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}
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}
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throw new Exception("Started with \" but not closed with \"");
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}
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return 0;
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}
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private string ReturnString(string str, int start, int end)
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{
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return str.Substring(start + 1, end - start - 1);
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}
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private int CheckRegexp(string str, int start)
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{
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if (str[start] == '$')
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{
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for (int i = start + 1; i < str.Length; i++)
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{
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//Console.Write(str[i].ToString());
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if (!char.IsDigit(str[i]))
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{
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return i - 1;
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}
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if ((i + 1 == str.Length))
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{
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return i;
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}
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}
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throw new Exception("Something wrong (CheckRegexp)");
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}
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return 0;
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}
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private string ReturnRegexp(string str, int start, int end)
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{
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return regexpResult[Convert.ToInt32(str.Substring(start + 1, end - start)) - 1];
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}
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private int CheckConditional(string str, int start)
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{
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int search;
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string link = "";
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if (str[start] == '(')
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{
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for (int i = start + 1; i < str.Length; i++)
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{
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//Console.Write(str[i].ToString());
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search = CheckSyntax(str, i, ref link);
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if (search > 0)
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{
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i = search;
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continue;
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}
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if (str[i] == ')')
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{
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return i;
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}
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}
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throw new Exception("Started with \"(\" but not closed with \")\"");
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}
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return 0;
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}
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private string ReturnConditional(string str, int start, int end)
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{
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int search;
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str = str.Substring(start + 1, end - start - 1);
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string conditional = "", cTrue = "", cFalse = "", link = "", result;
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for (int i = 0; i < str.Length; i++)
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{
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//Console.Write(str[i].ToString());
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search = CheckSyntax(str, i, ref link);
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if (search > 0)
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{
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i = search;
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continue;
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}
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if (string.IsNullOrEmpty(conditional))
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{
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if (str[i] == '?')
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{
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conditional = str.Substring(0, i);
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}
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}
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else if (string.IsNullOrEmpty(cTrue))
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{
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if (str[i] == ':')
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{
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cTrue = ReturnLink(str.Substring(conditional.Length + 1, i - conditional.Length - 1));
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cFalse = ReturnLink(str.Substring(i + 1, str.Length - i - 1));
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break;
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}
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}
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}
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string firstStr = "", secondStr = "", operation = "";
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for (int i = 0; i < conditional.Length; i++)
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{
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search = CheckSyntax(conditional, i, ref firstStr);
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if (search > 0)
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{
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i = search;
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continue;
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}
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if ((conditional[i] == '=') || (conditional[i] == '!') || (conditional[i] == '<') || (conditional[i] == '>'))
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{
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firstStr = ReturnLink(conditional.Substring(0, i));
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secondStr = ReturnLink(conditional.Substring(i + 1, conditional.Length - i - 1));
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operation = conditional[i].ToString();
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break;
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}
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}
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bool boolResult = false;
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switch (operation)
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{
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case "=":
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boolResult = firstStr == secondStr;
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break;
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case "!":
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boolResult = firstStr != secondStr;
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break;
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case "<":
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boolResult = Convert.ToInt32(firstStr) < Convert.ToInt32(secondStr);
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break;
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case ">":
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boolResult = Convert.ToInt32(firstStr) > Convert.ToInt32(secondStr);
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break;
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}
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if (boolResult)
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{
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result = cTrue;
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}
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else
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{
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result = cFalse;
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}
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lastOperation = "( " + firstStr + " " + operation + " " + secondStr + " ? " + cTrue + " : " + cFalse + " ) = " + result;
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return result;
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}
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private string ReturnLinkOld(string str)
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{
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string link = "";
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try
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{
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for (int i = 0; i < str.Length; i++)
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{
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if (str[i] == '"') //String
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{
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for (int a = 1; a < str.Length - i; a++)
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{
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if (str[i + a] == '"')
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{
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link += str.Substring(i + 1, a - 1);
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i = i + a;
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break;
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}
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if (!(a + 1 < str.Length - i)) //If last char in string
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{
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i = i + a;
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}
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}
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}
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else if (str[i] == '$') //Regexp
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{
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for (int a = 1; a < str.Length - i; a++)
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{
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if (!char.IsDigit(str[i + a]))
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{
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link += regexpResult[Convert.ToInt32(str.Substring(i + 1, a - 1)) - 1];
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i = i + a;
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break;
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}
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if (!(a + 1 < str.Length - i)) //If last char in string
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{
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link += regexpResult[Convert.ToInt32(str.Substring(i + 1, a)) - 1];
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}
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}
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}
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}
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}
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catch
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{
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return "";
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}
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return link;
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}
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}
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}
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