/// <summary>
/// Creates a file with unique temporary file name with a given extension in the specified folder.
/// File is guaranteed to be unique.
/// Extension may have an initial period.
/// If folder is null, the temporary folder will be used.
/// Caller must delete it when finished.
/// May throw IOException.
/// </summary>
internal static string GetTemporaryFile(string directory, string extension, bool createFile = true)
{
ErrorUtilities.VerifyThrowArgumentLengthIfNotNull(directory, nameof(directory));
ErrorUtilities.VerifyThrowArgumentLength(extension, nameof(extension));
if (extension[0] != '.')
{
extension = '.' + extension;
}
try
{
directory ??= Path.GetTempPath();
Directory.CreateDirectory(directory);
string file = Path.Combine(directory, $"tmp{Guid.NewGuid():N}{extension}");
ErrorUtilities.VerifyThrow(!FileSystems.Default.FileExists(file), "Guid should be unique");
if (createFile)
{
File.WriteAllText(file, string.Empty);
}
return(file);
}
catch (Exception ex) when(ExceptionHandling.IsIoRelatedException(ex))
{
throw new IOException(ResourceUtilities.FormatResourceStringStripCodeAndKeyword("Shared.FailedCreatingTempFile", ex.Message), ex);
}
}
internal static string GetTemporaryFile(string directory, string extension)
{
ErrorUtilities.VerifyThrowArgumentLengthIfNotNull(directory, "directory");
ErrorUtilities.VerifyThrowArgumentLength(extension, "extension");
if ((int)extension[0] != 46)
{
extension = "." + extension;
}
string path;
try
{
directory = directory ?? Path.GetTempPath();
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
path = Path.Combine(directory, "tmp" + Guid.NewGuid().ToString("N") + extension);
ErrorUtilities.VerifyThrow(!File.Exists(path), "Guid should be unique");
File.WriteAllText(path, string.Empty);
}
catch (Exception ex)
{
if (ExceptionHandling.NotExpectedException(ex))
{
throw;
}
else
{
throw new IOException(ResourceUtilities.FormatResourceString("Shared.FailedCreatingTempFile", (object)ex.Message), ex);
}
}
return(path);
}
/// <summary>
/// Creates a file with unique temporary file name with a given extension in the specified folder.
/// File is guaranteed to be unique.
/// Extension may have an initial period.
/// If folder is null, the temporary folder will be used.
/// Caller must delete it when finished.
/// May throw IOException.
/// </summary>
internal static string GetTemporaryFile(string directory, string extension, bool createFile = true)
{
ErrorUtilities.VerifyThrowArgumentLengthIfNotNull(directory, "directory");
ErrorUtilities.VerifyThrowArgumentLength(extension, "extension");
if (extension[0] != '.')
{
extension = '.' + extension;
}
try
{
directory = directory ?? Path.GetTempPath();
Directory.CreateDirectory(directory);
string file = Path.Combine(directory, string.Format("tmp{0}{1}", Guid.NewGuid().ToString("N"), extension));
ErrorUtilities.VerifyThrow(!File.Exists(file), "Guid should be unique");
if (createFile)
{
File.WriteAllText(file, String.Empty);
}
return(file);
}
catch (Exception ex) when(ExceptionHandling.IsIoRelatedException(ex))
{
throw new IOException(ResourceUtilities.FormatResourceString("Shared.FailedCreatingTempFile", ex.Message), ex);
}
}