/// <summary>
/// Returns the <see cref="SafeFileHandle"/> and fills <see cref="Win32FindData"/> from the passes path.
/// </summary>
/// <param name="path">Path to the file system entry</param>
/// <returns><see cref="SafeFileHandle"/></returns>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
private static SafeFileHandle CreateSafeFileHandle(string path)
{
Contract.Requires(!String.IsNullOrWhiteSpace(path));
Contract.Ensures(Contract.Result <SafeFileHandle>() != null);
return(Win32SafeNativeMethods.CreateFile(path, FileAccess.ReadWrite, FileShare.None, IntPtr.Zero, FileMode.Open, FileAttributes.Normal, IntPtr.Zero));
}
/// <summary>
/// Opens a <see cref="FileStream"/> for access at the given path. Ensure stream is correctly disposed.
/// </summary>
public static FileStream OpenFileStream(PathInfo pathInfo, FileAccess fileAccess, FileMode fileOption = FileMode.Open, FileShare shareMode = FileShare.Read, Int32 buffer = 0)
{
var fileHandle = Win32SafeNativeMethods.CreateFile(pathInfo.FullNameUnc, fileAccess, shareMode, IntPtr.Zero, fileOption, 0, IntPtr.Zero);
var win32Error = Marshal.GetLastWin32Error();
if (fileHandle.IsInvalid)
{
NativeExceptionMapping(pathInfo.FullName, win32Error); // Throws an exception
}
return(buffer > 0 ? new FileStream(fileHandle, fileAccess, buffer) : new FileStream(fileHandle, fileAccess));
}
/// <summary>
/// Creates a new file.
/// </summary>
/// <exception cref="PathAlreadyExistsException">The specified path already exists.</exception>
/// <exception cref="PathNotFoundException">This error is fired if the specified path or a part of them does not exist.</exception>
public static void CreateFile(String path, FileAccess fileAccess = FileAccess.Write, FileShare fileShare = FileShare.None, FileMode fileMode = FileMode.Create, FileAttributes fileAttributes = 0)
{
Contract.Requires(!String.IsNullOrWhiteSpace(path));
using (var fileHandle = Win32SafeNativeMethods.CreateFile(path, fileAccess, fileShare, IntPtr.Zero, fileMode, fileAttributes, IntPtr.Zero))
{
var win32Error = Marshal.GetLastWin32Error();
if (fileHandle.IsInvalid)
{
Win32ErrorCodes.NativeExceptionMapping(path, win32Error);
}
}
}
/// <summary>
/// Opens a <see cref="FileStream"/>
/// </summary>
public static FileStream OpenFileStream(string path, FileAccess fileAccess, FileMode fileOption = FileMode.Open, FileShare shareMode = FileShare.Read, Int32 buffer = 0)
{
Contract.Requires(!String.IsNullOrWhiteSpace(path));
Contract.Ensures(Contract.Result <FileStream>() != null);
var fileHandle = Win32SafeNativeMethods.CreateFile(path, fileAccess, shareMode, IntPtr.Zero, fileOption, 0, IntPtr.Zero);
var win32Error = Marshal.GetLastWin32Error();
if (fileHandle.IsInvalid)
{
Win32ErrorCodes.NativeExceptionMapping(path, win32Error); // Throws an exception
}
return(buffer > 0 ? new FileStream(fileHandle, fileAccess, buffer) : new FileStream(fileHandle, fileAccess));
}
private static SafeFileHandle getFileHandle(string path)
{
return(Win32SafeNativeMethods.CreateFile(path, GenericReadAccess, ShareModeAll, IntPtr.Zero, OpenExisting,
FileFlagsForOpenReparsePointAndBackupSemantics, IntPtr.Zero));
}