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10 Kevin 1 
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.IO;
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using System.Xml.Linq;
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using System.Windows.Forms;
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namespace SWAT_USB_App
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{
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    class SettingsParser
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    {
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        private static string settingsFileLocation = Initialization.pathToSWATDrive + "USBSettings.xml";
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        private static XElement Settings;
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        public static bool settingsFileExist()
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        {
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            if (File.Exists(Initialization.pathToSWATDrive + "USBSettings.xml"))
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                return true;
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            else
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                return false;
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        }
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        public static void readSettingsFile()
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        {
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            try
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            {
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                DebugText.appendText("Parsing USBSettings.xml");
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                // Clears the lists for software and drivers
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                form_Software.softwareList.Clear();
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                form_Drivers.driverList.Clear();
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                Settings = XElement.Load(settingsFileLocation);
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                // Reads the list of applications from the USBSettings.xml file into form_Software.softwareList
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                DebugText.appendText("Parsing list of applications into List softwareList");
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                IEnumerable<XElement> app =
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                    from el in Settings.Elements("Applications").Elements("Application")
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                    select el;
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                foreach (XElement el in app)
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                {
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                    DebugText.appendText("Adding application " + el.Element("Name").Value + " into softwareList");
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                    form_Software.softwareList.Add(el.Element("Name").Value);
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                }
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                // Reads the list of drivers from the USBSettings.xml file into form_Drivers.driverList
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                DebugText.appendText("Parsing list of drivers into List driverList");
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                IEnumerable<XElement> driv =
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                    from el in Settings.Elements("Drivers").Elements("Driver")
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                    select el;
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                foreach (XElement el in driv)
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                {
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                    DebugText.appendText("Adding driver " + el.Element("Name").Value + " into driverList");
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                    form_Drivers.driverList.Add(el.Element("Name").Value);
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                }
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            }
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            catch (Exception e)
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            {
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                DebugText.appendText("Exception Thrown: " + e.ToString());
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                MessageBox.Show(e.ToString());
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            }
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        }
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        public static bool isDefaultCheck(string applicationName)
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        {
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            try
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            {
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                // Checks if passed application name is marked as default
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                bool isDefault = false;
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                IEnumerable<XElement> def =
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                    from el in Settings.Elements("Applications").Elements("Application")
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                    where (string)el.Element("Name") == applicationName
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                    select el;
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                if ((string)def.First().Element("Default").Value.ToLower() == "yes")
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                    isDefault = true;
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                return isDefault;
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            }
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            catch (Exception e)
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            {
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                DebugText.appendText("Exception Thrown: " + e.ToString());
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                MessageBox.Show(e.ToString());
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                return false;
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            }
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        }
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        public static string[] getSetupLocation(string fileName)
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        {
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            try
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            {
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                // Pulls the location and arguments for the specified application/driver from USBSettings.xml
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                DebugText.appendText("Getting setup locations for application " + fileName);
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                IEnumerable<XElement> loc =
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                    from el in Settings.Elements("Applications").Elements("Application")
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                    where (string)el.Element("Name") == fileName
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                    select el;
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                if (loc.Count() == 0)
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                {
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                    loc =
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                        from el in Settings.Elements("Drivers").Elements("Driver")
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                        where (string)el.Element("Name") == fileName
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                        select el;
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                }
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                // Creates a string array holding alternating lines of setup locations and arguments for that setup file
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                string[] appSetupFile = new string[loc.Elements("Setup").Elements("Location").Count() * 2];
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                int counter = 0;
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                foreach (XElement elem in loc.Elements("Setup").Elements("Location"))
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                {
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                    DebugText.appendText("Setup location for " + fileName + " is at " + (string)elem.Value + " with arguments " + (string)elem.Attribute("Args"));
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                    appSetupFile[counter] = (string)elem.Value;
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                    appSetupFile[counter + 1] = (string)elem.Attribute("Args");
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                    counter += 2;
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                }
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                return appSetupFile;
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            }
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            catch (Exception e)
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            {
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                DebugText.appendText("Exception Thrown: " + e.ToString());
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                MessageBox.Show(e.ToString());
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                return null;
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            }
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        }
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    }
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}