Little Registry Cleaner/Misc/Utils.cs

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/*
    Little Registry Cleaner
    Copyright (C) 2008 Little Apps (http://www.little-apps.org/)

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.Serialization;
using System.Runtime.InteropServices;
using System.Diagnostics;
using Microsoft.Win32;
using System.Security.Permissions;
using System.Security;

namespace Little_Registry_Cleaner
{
    public static class Utils
    {
        #region Signatures imported from http://pinvoke.net
        [DllImport("kernel32.dll", CharSet=CharSet.Auto)] public static extern uint RegisterApplicationRestart(string pszCommandline, int dwFlags);
        [DllImport("kernel32.dll")] public static extern int SearchPath(string strPath, string strFileName, string strExtension, uint nBufferLength, StringBuilder strBuffer, string strFilePart);
        [DllImport("kernel32.dll")] public static extern DriveType GetDriveType([MarshalAs(UnmanagedType.LPStr)] string lpRootPathName);

        // Used for SHGetSpecialFolderPath
        public const int CSIDL_STARTUP = 0x0007; // All Users\Startup
        public const int CSIDL_COMMON_STARTUP = 0x0018; // Common Users\Startup
        public const int CSIDL_PROGRAMS = 0x0002;   // All Users\Start Menu\Programs
        public const int CSIDL_COMMON_PROGRAMS = 0x0017;   // Start Menu\Programs

        [DllImport("shell32.dll")] public static extern bool SHGetSpecialFolderPath(IntPtr hwndOwner, [Out] StringBuilder lpszPath, int nFolder, bool fCreate);
        [DllImport("shell32.dll", EntryPoint = "FindExecutable")] public static extern long FindExecutableA(string lpFile, string lpDirectory, StringBuilder lpResult);
        [DllImport("shell32.dll", EntryPoint = "ExtractIconEx")] public static extern int ExtractIconExA(string lpszFile, int nIconIndex, ref IntPtr phiconLarge, ref IntPtr phiconSmall, int nIcons);

        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern IntPtr PathGetArgs([In] string path);
        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern void PathRemoveArgs([In, Out] StringBuilder path);
        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern int PathParseIconLocation([In, Out] StringBuilder path);
        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern void PathUnquoteSpaces([In, Out] StringBuilder path);
        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern bool PathFileExists(string path);
        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern bool PathStripToRoot([In, Out] StringBuilder path);
        [DllImport("Shlwapi.dll", SetLastError = true, CharSet = CharSet.Auto)] public static extern bool PathRemoveFileSpec([In, Out] StringBuilder path);