mirror of https://github.com/dahall/Vanara.git
68 lines
2.9 KiB
C#
68 lines
2.9 KiB
C#
using System;
|
|
using System.IO;
|
|
using static Vanara.PInvoke.Kernel32;
|
|
|
|
namespace Vanara.PInvoke.Tests
|
|
{
|
|
/// <summary>Creates a unique temporary file in the %APPDATA%\Temp folder and deletes it when disposed.</summary>
|
|
/// <seealso cref="System.IDisposable"/>
|
|
public class TempFile : IDisposable
|
|
{
|
|
/// <summary>The default value inserted into the file if not overridden by constructor parameter.</summary>
|
|
public const string tmpstr = @"Temporary";
|
|
|
|
/// <summary>Initializes a new instance of the <see cref="TempFile"/> class and retrieves a handle to the file.</summary>
|
|
/// <param name="dwDesiredAccess">The desired access.</param>
|
|
/// <param name="dwShareMode">The share mode.</param>
|
|
/// <param name="dwCreationDisposition">The creation disposition.</param>
|
|
/// <param name="dwFlagsAndAttributes">The flags and attributes.</param>
|
|
public TempFile(Kernel32.FileAccess dwDesiredAccess, FileShare dwShareMode, FileMode dwCreationDisposition = FileMode.OpenOrCreate,
|
|
FileFlagsAndAttributes dwFlagsAndAttributes = FileFlagsAndAttributes.FILE_ATTRIBUTE_NORMAL) : this(string.Empty) =>
|
|
hFile = CreateFile(FullName, dwDesiredAccess, dwShareMode, null, dwCreationDisposition, dwFlagsAndAttributes, IntPtr.Zero);
|
|
|
|
/// <summary>Initializes a new instance of the <see cref="TempFile"/> class with the specified contents.</summary>
|
|
/// <param name="contents">
|
|
/// The text inserted into the file. If this value is <see langword="null"/>, the file is not created on disk.
|
|
/// </param>
|
|
public TempFile(string contents = tmpstr)
|
|
{
|
|
FullName = Path.GetTempFileName();
|
|
if (contents is null)
|
|
File.Delete(FullName);
|
|
else if (contents != string.Empty)
|
|
File.WriteAllText(FullName, contents);
|
|
}
|
|
|
|
/// <summary>Initializes a new instance of the <see cref="TempFile"/> class with the specified extension and contents.</summary>
|
|
/// <param name="ext">The file extension.</param>
|
|
/// <param name="contents">
|
|
/// The text inserted into the file. If this value is <see langword="null"/>, the file is not created on disk.
|
|
/// </param>
|
|
public TempFile(string ext, string contents = tmpstr)
|
|
{
|
|
FullName = Path.Combine(Path.GetTempPath(), $"tmp{Guid.NewGuid():N}.{ext.TrimStart('.')}");
|
|
if (contents is not null)
|
|
File.WriteAllText(FullName, contents);
|
|
}
|
|
|
|
/// <summary>Gets the full path of the temporary file.</summary>
|
|
/// <value>The full path of the temporary file.</value>
|
|
public string FullName { get; }
|
|
|
|
/// <summary>
|
|
/// Gets the file handle if created with the <see cref="TempFile.TempFile(Kernel32.FileAccess, FileShare, FileMode,
|
|
/// FileFlagsAndAttributes)"/> constructor.
|
|
/// </summary>
|
|
/// <value>The file handle.</value>
|
|
public SafeHFILE hFile { get; }
|
|
|
|
/// <summary>Releases unmanaged and - optionally - managed resources.</summary>
|
|
/// <returns></returns>
|
|
void IDisposable.Dispose()
|
|
{
|
|
hFile?.Dispose();
|
|
if (File.Exists(FullName))
|
|
File.Delete(FullName);
|
|
}
|
|
}
|
|
} |