/// <summary>
/// Most files are organized as a table where lines are rows and columns are separated by a delimiter. This allows
/// easy processing of such files, along with line trimming, removing empty lines, etc.
/// </summary>
/// <param name="filePath"></param>
/// <param name="settings"></param>
/// <returns>Outer list is the rows, inner lists are the columns</returns>
public static List <List <string> > SplitDelimitedFileByLines(string filePath, SplitFileSettings settings)
{
List <string> lines = new List <string>();
ThreadingServices.WaitOnAction(() => lines = File.ReadAllLines(filePath).ToList(), settings.FileReadTimeout);
List <List <string> > results = new List <List <string> >();
foreach (var line in lines)
{
var entries = line.Split(settings.Delimiters).ToList();
if (settings.TrimEntries)
{
entries = entries.Select(x => x.Trim()).ToList();
}
if (settings.RemoveEmptyEntries)
{
entries = entries.Where(x => !string.IsNullOrEmpty(x)).ToList();
}
if (settings.RemoveEmptyLines & entries.Count < 1)
{
continue;
}
results.Add(entries);
}
return(results);
}
/// <summary>
/// Force a file to be copied, even if the destination exists and is read-only. Retries for the specified
/// timeout period (default 3 seconds) if it fails
/// </summary>
/// <param name="source"></param>
/// <param name="destination"></param>
/// <param name="timeout"></param>
public static void ForceCopy(string source, string destination, TimeSpan?timeout = null)
{
if (timeout == null)
{
timeout = TimeSpan.FromSeconds(3);
}
TimeSpan realTimeout = (TimeSpan)timeout;
if (File.Exists(destination))
{
ForceDelete(destination, realTimeout);
}
ThreadingServices.WaitOnAction(() => File.Copy(source, destination, true), realTimeout);
}
/// <summary>
/// Force a file to be deleted, even if it is read-only. Retries for the specified timeout period
/// (default 3 seconds) if it fails.
/// </summary>
/// <param name="filename"></param>
/// <param name="timeout"></param>
public static void ForceDelete(string filename, TimeSpan?timeout = null)
{
if (timeout == null)
{
timeout = TimeSpan.FromSeconds(3);
}
TimeSpan realTimeout = (TimeSpan)timeout;
ThreadingServices.WaitOnAction(() => File.SetAttributes(filename, FileAttributes.Normal), realTimeout);
ThreadingServices.WaitOnAction(() => File.Delete(filename), realTimeout);
ThreadingServices.WaitOnAction(() => { if (File.Exists(filename))
{
throw new Exception("File still exists");
}
}, realTimeout);
}
/// <summary>
/// Force a directory to be deleted, even if it contains read-only files. Retries for the specified
/// timeout period (default 3 seconds) if it fails.
/// </summary>
/// <remarks>This method forces every file to have normal file permissions, and DOES NOT
/// put the permissions back to normal if it fails. If this is unnacceptable, you may want to
/// write a custom method using FileServices.ForceDelete</remarks>
/// <param name="directoryPath"></param>
/// <param name="timeout"></param>
public static void ForceDelete(string directoryPath, TimeSpan?timeout = null)
{
if (timeout == null)
{
timeout = TimeSpan.FromSeconds(3);
}
TimeSpan realTimeout = (TimeSpan)timeout;
DateTime start = DateTime.Now;
foreach (var filename in Directory.EnumerateFiles(directoryPath, "*", SearchOption.AllDirectories))
{
if (File.GetAttributes(filename) != FileAttributes.Normal)
{
ThreadingServices.WaitOnAction(() => File.SetAttributes(filename, FileAttributes.Normal), realTimeout - (DateTime.Now - start));
}
}
ThreadingServices.WaitOnAction(() => Directory.Delete(directoryPath, true), realTimeout - (DateTime.Now - start));
ThreadingServices.WaitOnAction(() => { if (Directory.Exists(directoryPath))
{
throw new Exception("Directory still exists");
}
}, realTimeout - (DateTime.Now - start));
}
