/// <summary>
/// Constructor
///
/// Creates and opens/closes a file
///
/// will throw an exception if file cannot be created
/// </summary>
public FileSizeManager(FileParameterStruct newParameter)
{
//ensure that parameters are valid.
if (!newParameter.ValidateConstructorParameters(false, out string problem))
{
throw new Exception("Cannot create '" + newParameter.ToString() + "'." +
(problem == "" ? "" : " The following problem occured: " + Environment.NewLine + problem));
}
//create directory if necessary and prepare filelist
directoryInfo = Directory.CreateDirectory(newParameter.DirectoryPath);
newParameter.UpdateDirectoryPath(directoryInfo.FullName);
fileParameter = newParameter;
fileList = new List <FileInfoNumberStruct>();
//Read fileinfos with file numbers into sorted fileList
FileInfo[] fileInfos =
directoryInfo.GetFiles(fileParameter.GetFileSearchPattern(), SearchOption.TopDirectoryOnly);
currentFileNumber = 1;
//TestFileName123.tst ==> 123
// TestFileName
int startPos = fileParameter.FileName.Length;
// . tst
int extensionLength = 1 + fileParameter.FileExtension.Length;
foreach (FileInfo fileInfo in fileInfos)
{
string fileName = fileInfo.Name;
if (int.TryParse(fileName.Substring(startPos, fileName.Length - startPos - extensionLength), out int fileNumber))
{
fileList.Add(new FileInfoNumberStruct(fileNumber, fileInfo));
if (fileNumber > currentFileNumber)
{
currentFileNumber = fileNumber;
}
}
}
fileList.Sort();
//make sure that the correct number of files exist,
if (fileList.Count == 0)
{
createNewFile();
}
else
{
enforceFileCountMax();
currentFileInfo = fileList[fileList.Count - 1].FileInfo;
}
}
// -------
/// <summary>
/// Supports the changing of file name, size, etc.
/// </summary>
public void ChangeFileProperties(FileParameterStruct newFileParameter)
{
if (!newFileParameter.ValidateConstructorParameters(false, out string problem))
{
throw new Exception("LogFileWriter.ChangeProperties(): Invalide parameters '" + newFileParameter.ToString() + "'." +
(problem == null ? "" : " The following problem occured: " + Environment.NewLine + problem));
}
this.newFileParameter = newFileParameter;
isNewFileParameter = true;
}
