/// <summary>
/// Unzip a file
/// </summary>
/// <param name="filePath">Zip file path</param>
/// <returns>Unzip file path</returns>
public static string UnzipFile(string filePath)
{
string resultFilename = "";
ZipArchive archive = System.IO.Compression.ZipFile.OpenRead(filePath);
var zippedFile = archive.GetEntry(Path.GetFileNameWithoutExtension(filePath));
resultFilename = Path.ChangeExtension(filePath, "").TrimEnd('.');
if (System.IO.File.Exists(resultFilename))
{
System.IO.File.Delete(resultFilename);
}
zippedFile.ExtractToFile(resultFilename);
archive.Dispose();
GenericFileStorage.deleteFile(filePath);
return(resultFilename);
}
/// <summary>
/// Zip a file
/// </summary>
/// <param name="filename">Local file path</param>
/// <returns>Local zip file path</returns>
public static string ZipFile(string filename)
{
string zippedFilename = filename + ".zip";
GenericFileStorage.deleteFile(zippedFilename);
using (var memoryStream = new MemoryStream())
{
using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
{
var demoFile = archive.CreateEntryFromFile(filename, Path.GetFileName(filename));
}
using (var fileStream = new FileStream(zippedFilename, FileMode.Create))
{
memoryStream.Seek(0, SeekOrigin.Begin);
memoryStream.CopyTo(fileStream);
}
}
//GenericFileStorage.deleteFile(filename);
return(zippedFilename);
}
/// <summary>
/// Download a file from the GSS
/// </summary>
/// <param name="fileId">gss file address</param>
/// <param name="folderPath">local folder where the file will be download</param>
/// <param name="filename">Force a local filename</param>
/// <param name="autoUnzip">Unzip the file if the extension is *.zip</param>
/// <returns></returns>
public string DownloadFile(string fileId, string folderPath, string filename = "", bool autoUnzip = true)
{
if (!fileUtils.containsFile(fileId, this.SessionToken))
{
throw new Exception(string.Format("File \"{0}\" does not exist on the GSS", fileId));
}
var resourceInfo = fileUtils.getResourceInformation(fileId, this.SessionToken);
var readDescription = resourceInfo.readDescription;
if (!readDescription.supported)
{
throw new Exception("Read operation not allowed!");
}
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
HttpWebRequest downloadRequest = (HttpWebRequest)WebRequest.Create(readDescription.url);
// We set the parameters as described by the service
downloadRequest.Method = readDescription.httpMethod;
downloadRequest.Timeout = Timeout.Infinite;
downloadRequest.KeepAlive = true;
if (readDescription.headers != null)
{
foreach (var headerField in readDescription.headers)
{
downloadRequest.Headers[headerField.key] = headerField.value;
}
}
// In return we will get the id of the newly created file:
HttpWebResponse responseFromDownload = (HttpWebResponse)downloadRequest.GetResponse();
if (responseFromDownload.StatusCode != HttpStatusCode.OK && responseFromDownload.StatusCode != HttpStatusCode.Accepted)
{
throw new Exception("Wrong status code returned");
}
string localFilePath = folderPath.TrimEnd('\\') + @"\";
if (string.IsNullOrEmpty(filename))
{
localFilePath += Path.GetFileName(fileId);
}
else
{
localFilePath += filename;
}
//Write the server file on the computer
using (BinaryWriter writer = new BinaryWriter(System.IO.File.OpenWrite(localFilePath), fileEncoding))
{
using (BinaryReader reader = new BinaryReader(responseFromDownload.GetResponseStream()))
{
int bufferSize = this.BufferSize;
byte[] buffer = new byte[bufferSize];
while ((buffer = reader.ReadBytes(bufferSize)).GetLength(0) > 0)
{
writer.Write(buffer);
}
}
}
if (autoUnzip && Path.GetExtension(localFilePath).ToLower().Equals(".zip"))
{
localFilePath = GenericFileStorage.UnzipFile(localFilePath);
}
return(localFilePath);
}
/// <summary>
/// Upload a file on the GSS
/// </summary>
/// <param name="localFilePath">Local File path</param>
/// <param name="cloudFilename">Cloud filename. For PLM: [folder]/[filename]</param>
/// <param name="distantPath">path folder</param>
/// <param name="compress">set true to compress the file</param>
/// <returns></returns>
public FileDescription UploadFile(string localFilePath, string cloudFilename, string distantPath, bool compress = true)
{
string serverFilename;
if (compress)
{
localFilePath = GenericFileStorage.ZipFile(localFilePath);
cloudFilename += ".zip";
}
if (distantPath.StartsWith(this.FilePrefix))
{
distantPath = distantPath.Substring(FilePrefix.Length);
}
string cloudFolderEncoded = distantPath == "" ? "" : System.Web.HttpUtility.UrlEncode(distantPath.Trim('/')) + "/";
string cloudFilenameEncoded = System.Web.HttpUtility.UrlEncode(cloudFilename);
serverFilename = this.FilePrefix + cloudFolderEncoded + cloudFilenameEncoded;
this.DeleteFileIfExist(serverFilename);
// Now we must ask GSS how to upload the file:
// (this calls the service a second time)
var resourceInfo = fileUtils.getResourceInformation(serverFilename, this.SessionToken);
var createDescription = resourceInfo.createDescription;
// Now we create
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(createDescription.url);
// We set the parameters as described by the service
request.Method = createDescription.httpMethod;
request.Headers[createDescription.sessionTokenField] = this.SessionToken;
request.Timeout = System.Threading.Timeout.Infinite;
request.KeepAlive = true;
if (createDescription.headers != null)
{
foreach (var headerField in createDescription.headers)
{
request.Headers[headerField.key] = headerField.value;
}
}
//Write the localFile on the server
using (BinaryWriter writer = new BinaryWriter(request.GetRequestStream()))
{
using (BinaryReader reader = new BinaryReader(System.IO.File.OpenRead(localFilePath), fileEncoding))
{
int bufferSize = this.BufferSize;
byte[] buffer = new byte[bufferSize];
while ((buffer = reader.ReadBytes(bufferSize)).GetLength(0) > 0)
{
writer.Write(buffer);
}
}
}
// In return we will get the id of the newly created file:
try
{
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode != HttpStatusCode.OK && response.StatusCode != HttpStatusCode.Accepted && response.StatusCode != HttpStatusCode.Created)
{
throw new Exception("Wrong status code returned");
}
string returnedID = "";
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
returnedID = reader.ReadToEnd().Trim();
}
if (string.IsNullOrEmpty(returnedID))
{
returnedID = resourceInfo.uniqueName;
}
//var test = fileUtils.getResourceInformation(returnedID, this.SessionToken);
return(new FileDescription(resourceInfo.visualName, resourceInfo.uniqueName, new FileIdentifier(returnedID), resourceInfo.type));
}
catch (WebException wex)
{
throw new Exception("Generic File Storage Exception", wex);
}
}
