// Procedura molto pesante!!!
// Trasforma un csv in un dizionario di liste una rappresentazione in memoria di una tabella in forma normale
public static Dictionary<string, List<string>> GetView(System.IO.Stream stream, Mapping mapping, int maxResult = 0, int offSet = 0)
{
if (stream == null) return null;
if (mapping == null) return null;
Dictionary<string, List<string>> view = new Dictionary<string, List<string>>();
stream.Seek(0, System.IO.SeekOrigin.Begin);
//create object for CSVReader and pass the stream
CSVReader reader = new CSVReader((System.IO.Stream)stream);
string[] dataRow;
int indexRow = 0;
try
{
while ((dataRow = reader.GetCSVLine()) != null)
{
// offset salto le offSet righe del csv
if (indexRow >= offSet)
{
foreach (MappingItem item in mapping.Items)
{
int numColumn = int.Parse(item._a.ToString());
string data = dataRow[numColumn - 1];
string header = item._b.ToString();
if (header.ToUpper() == "TIME_PERIOD")
if (mapping.TranscodeUse)
data = mapping.TranscodeTime.TransCodific(data);
if (view.Keys.Contains<string>(header))
{
if (maxResult > 0
&& ((List<string>)view[header]).Count >= maxResult)
return view;
((List<string>)view[header]).Add(data.Trim());
}
else
{
view.Add(header, new List<string>());
((List<string>)view[header]).Add(data.Trim());
}
}
}
indexRow++;
}
return view;
}
catch (Exception ex)
{
//Console.Write(ex.Message);
}
return null;
}
public string UploadFileCSV()
{
// Retrive Logged user
SDMX_Dataloader.Engine.Client client = null;
try
{
client = HttpContext.Current.Session[UserDef.UserSessionKey] as SDMX_Dataloader.Engine.Client; if (client == null) throw new Exception("Session Expiried");
}
catch (Exception ex)
{
return JsonMessage.SessionExpired;
}
try
{
if (!UserDef.UserCan(client.LoggedUser, UserDef.ActionDef.DefaultProc))
return JsonMessage.GetError(Resources.Notification.err_action_denied);
#region Check file successfull sended
if (!HttpContext.Current.Request.Files.AllKeys.Any())
return JsonMessage.GetError(Resources.Notification.err_file_not_found);
var httpPostedFile = HttpContext.Current.Request.Files["UploadedCSV"];
//create object for CSVReader and pass the stream
System.IO.Stream _stream = httpPostedFile.InputStream;
if (_stream == null)
return JsonMessage.GetError(Resources.Notification.err_file_csv);
// Get the uploaded image from the Files collection
string[] _params_row = HttpContext.Current.Request.Params.GetValues("chkFirstRowJump");
string[] _params = HttpContext.Current.Request.Params.GetValues("CharSeparator");
bool firstRowHeader = (_params_row[0].Trim() == "true") ? true : false;
char csvSeparator = _params[0].Trim()[0];
// check file type (only .csv)
string[] FileExt = httpPostedFile.FileName.Split('.');
string FileEx = FileExt[FileExt.Length - 1];
if (FileEx.ToLower() != "csv")
{
return JsonMessage.GetError(Resources.Notification.err_file_bad_type);
}
// Check file exist
if (httpPostedFile.ContentLength < 1)
{
return JsonMessage.GetError(Resources.Notification.err_file_empty);
}
#endregion
CSVReader reader = new CSVReader((System.IO.Stream)_stream);
reader.Separator = csvSeparator;
string[] headers = (firstRowHeader) ? reader.GetHeaders() : reader.GetCSVLine();
string _userPath = HttpContext.Current.Server.MapPath(client.UserDirectory + System.IO.Path.DirectorySeparatorChar);
string filename = System.IO.Path.GetFileName(httpPostedFile.FileName);
string fileSavePath = System.IO.Path.Combine(_userPath,filename.Substring(0,filename.Length-4));
int contentLength = httpPostedFile.ContentLength;
string contentType = httpPostedFile.ContentType;
string[] row = reader.GetHeaders();
int indexTimeFormat = -1;
for (int i = 0; i < headers.Length;i++ )
{
if (headers[i].ToUpper() == "TIME_PERIOD") {
indexTimeFormat = i;
break;
}
}
string timeformat = (indexTimeFormat>-1)?row[indexTimeFormat]:"1900-10";
_stream.Close();
httpPostedFile.InputStream.Close();
Dictionary<string, object> _param = new Dictionary<string, object>();
_param.Add("filename", filename);
_param.Add("filesize", contentLength);
_param.Add("content", contentType);
_param.Add("headers", headers);
_param.Add("timeformat", timeformat);
// force json responce header
System.Web.Script.Serialization.JavaScriptSerializer js = new System.Web.Script.Serialization.JavaScriptSerializer();
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ContentType = "application/json";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
HttpContext.Current.Response.Write(new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(_param));
HttpContext.Current.Response.End();
//HttpContext.Current.ApplicationInstance.CompleteRequest();
return JsonMessage.GetData(_param);
}
catch (Exception ex)
{
Logger.Error(ex.Message);
return JsonMessage.ErrorOccured;
}
}
