/// <summary>
/// Loads records from csv file.
/// </summary>
/// <param name="stream">Current stream.</param>
/// <returns>Count loaded records.</returns>
internal int LoadFromCsv(StreamReader stream)
{
FileCabinetRecordCsvReader reader = new FileCabinetRecordCsvReader(stream);
this.records = reader.ReadAll().ToArray();
return(this.records.Length);
}
/// <summary>
/// Loads the records from csv file.
/// </summary>
/// <param name="reader">Csv reader.</param>
/// <returns>List of imported records.</returns>
public IList <FileCabinetRecord> LoadFromCsv(StreamReader reader)
{
FileCabinetRecordCsvReader csvReader = new FileCabinetRecordCsvReader(reader);
IList <FileCabinetRecord> records = csvReader.ReadAll();
return(records);
}
/// <summary>
/// Loads from the CSV file.
/// </summary>
/// <param name="reader">Stream to read.</param>
/// <returns>Count of records.</returns>
public int LoadFromCsv(StreamReader reader)
{
var csvReader = new FileCabinetRecordCsvReader(reader);
this.records = csvReader.ReadAll();
return(this.records.Count);
}
/// <summary>
/// Метод выгрузки из csv.
/// </summary>
/// <param name="fs">Filestream.</param>
public void LoadFromCsv(FileStream fs)
{
StreamReader reader = new StreamReader(fs);
FileCabinetRecordCsvReader csvReader = new FileCabinetRecordCsvReader(reader);
List <FileCabinetRecord> list = new List <FileCabinetRecord>(csvReader.ReadAll());
this.records = list.ToArray();
}
/// <summary>
/// Load data from csv file.
/// </summary>
/// <param name="filestream">Input filestream.</param>
public void LoadFromCsv(FileStream filestream)
{
if (filestream == null)
{
throw new ArgumentNullException(nameof(filestream));
}
using (StreamReader streamReader = new StreamReader(filestream.Name, Encoding.ASCII))
{
this.fileCabinetRecordCsvReader = new FileCabinetRecordCsvReader(streamReader);
this.ListFromFile = new ReadOnlyCollection<FileCabinetRecord>(this.fileCabinetRecordCsvReader.ReadAll());
}
}
private void ImportFromFormat(string format, string path)
{
string message = string.Empty;
if (!File.Exists(path))
{
message = $"Import error: file {path} does not exist.";
}
FileStream fileStream = default;
try
{
fileStream = new FileStream(path, FileMode.Open);
}
catch (UnauthorizedAccessException ex)
{
Console.WriteLine(ex.Message);
}
catch (FileNotFoundException)
{
Console.WriteLine($"Export failed: can't open file {path}.");
}
catch (IOException ex)
{
Console.WriteLine(ex.Message);
}
if (fileStream != null)
{
using var stream = new StreamReader(fileStream);
var snapshot = new FileCabinetServiceSnapshot(Array.Empty <FileCabinetRecord>());
if (format.Equals(CsvString, StringComparison.InvariantCultureIgnoreCase))
{
using var reader = new FileCabinetRecordCsvReader(stream);
message = this.LoadFrom(reader, path, snapshot);
}
if (format.Equals(XmlString, StringComparison.InvariantCultureIgnoreCase))
{
using var reader = new FileCabinetRecordXmlReader(stream);
message = this.LoadFrom(reader, path, snapshot);
}
}
Console.WriteLine(message);
}
/// <summary>Loads records from CSV file.</summary>
/// <param name="reader">Reader.</param>
/// <param name="validator">Validator.</param>
/// <exception cref="ArgumentNullException">Thrown when reader or validator is null.</exception>
public void LoadFromCsv(StreamReader reader, IRecordValidator validator)
{
if (reader == null)
{
throw new ArgumentNullException(nameof(reader));
}
if (validator == null)
{
throw new ArgumentNullException(nameof(validator));
}
var csvReader = new FileCabinetRecordCsvReader(reader);
IList <FileCabinetRecord> records;
try
{
records = csvReader.ReadAll();
}
catch (FormatException)
{
throw;
}
catch (IndexOutOfRangeException)
{
throw;
}
UnverifiedData unverifiedData;
foreach (var record in records)
{
unverifiedData = new UnverifiedData(record);
try
{
validator.ValidateParameters(unverifiedData);
}
catch (ArgumentException ex)
{
this.invalidRecords.Add(new Tuple <FileCabinetRecord, string>(record, ex.Message));
continue;
}
this.records.Add(record);
}
}
/// <summary>Loads the snapshot from CSV file.</summary>
/// <param name="sr">The stream for a file.</param>
public void LoadFromCsv(StreamReader sr)
{
int overwrittenElements = 0;
int lastElementIndex = this.records.Length - 1;
IList <FileCabinetRecord> list = new FileCabinetRecordCsvReader(sr).ReadAll();
Array.Resize(ref this.records, this.records.Length + list.Count);
foreach (var element in list)
{
if (lastElementIndex < 0)
{
this.records[lastElementIndex + 1] = element;
lastElementIndex++;
continue;
}
for (int i = 0; i <= lastElementIndex; i++)
{
if (this.records[i].Id == element.Id)
{
this.records[i] = element;
overwrittenElements++;
break;
}
if (i == lastElementIndex)
{
this.records[lastElementIndex + 1] = element;
lastElementIndex++;
break;
}
}
}
Array.Resize(ref this.records, this.records.Length - overwrittenElements);
}
/// <summary>
/// This Methods load from file in csv-format.
/// </summary>
/// <param name="streamReader">Represents characters read.</param>
/// <returns>List records.</returns>
public IList <FileCabinetRecord> LoadFromCsv(StreamReader streamReader)
{
FileCabinetRecordCsvReader csvReader = new FileCabinetRecordCsvReader(streamReader);
return(csvReader.ReadAll());
}
/// <summary>
/// Load records from CSV file.
/// </summary>
/// <param name="reader">StreamReader.</param>
public void LoadFromCsv(StreamReader reader)
{
FileCabinetRecordCsvReader fileCabinetRecordCsvReader = new FileCabinetRecordCsvReader(reader);
this.Records = fileCabinetRecordCsvReader.ReadAll();
}
/// <summary>
/// Load records from csv file.
/// </summary>
/// <param name="reader">Stream Reader.</param>
public void LoadFromCsv(StreamReader reader)
{
FileCabinetRecordCsvReader csvReader = new FileCabinetRecordCsvReader(reader);
this.records = csvReader.ReadAll().ToArray();
}
