/// <summary>
/// Streams a local zip file using a streamreader.
/// Important: the caller must call Dispose() on the returned ZipFile instance.
/// </summary>
/// <param name="filename">Location of the original zip file</param>
/// <param name="zipEntryName">The zip entry name to open a reader for. Specify null to access the first entry</param>
/// <param name="zip">The ZipFile instance to be returned to the caller</param>
/// <returns>Stream reader of the first file contents in the zip file</returns>
public static StreamReader Unzip(string filename, string zipEntryName, out ZipFile zip)
{
StreamReader reader = null;
zip = null;
try
{
if (File.Exists(filename))
{
try
{
zip = new ZipFile(filename);
var entry = zip.FirstOrDefault(x => zipEntryName == null || string.Compare(x.FileName, zipEntryName, StringComparison.OrdinalIgnoreCase) == 0);
if (entry == null)
{
// Unable to locate zip entry
return(null);
}
reader = new StreamReader(entry.OpenReader());
}
catch (Exception err)
{
Log.Error(err, "Inner try/catch");
if (zip != null)
{
zip.Dispose();
}
if (reader != null)
{
reader.Close();
}
}
}
else
{
Log.Error($"Data.UnZip(2): File doesn\'t exist: {filename}");
}
}
catch (Exception err)
{
Log.Error(err, "File: " + filename);
}
return(reader);
}
/// <summary>
/// Streams a local zip file using a streamreader.
/// Important: the caller must call Dispose() on the returned ZipFile instance.
/// </summary>
/// <param name="filename">Location of the original zip file</param>
/// <param name="zipEntryName">The zip entry name to open a reader for. Specify null to access the first entry</param>
/// <param name="zip">The ZipFile instance to be returned to the caller</param>
/// <returns>Stream reader of the first file contents in the zip file</returns>
public static StreamReader Unzip(string filename, string zipEntryName, out ZipFile zip)
{
StreamReader reader = null;
zip = null;
try
{
if (File.Exists(filename))
{
try
{
zip = new ZipFile(filename);
var entry = zip.FirstOrDefault(x => zipEntryName == null || string.Compare(x.FileName, zipEntryName, StringComparison.OrdinalIgnoreCase) == 0);
if (entry == null)
{
throw new ArgumentException("Unable to locate zip entry with name: " + zipEntryName);
}
reader = new StreamReader(entry.OpenReader());
}
catch (Exception err)
{
Log.Error(err, "Inner try/catch");
if (zip != null) zip.Dispose();
if (reader != null) reader.Close();
}
}
else
{
Log.Error("Data.UnZip(2): File doesn't exist: " + filename);
}
}
catch (Exception err)
{
Log.Error(err, "File: " + filename);
}
return reader;
}