/// <summary>
/// Convert data settings to string representation
/// </summary>
/// <param name="settings">Settings</param>
/// <returns>Text</returns>
protected virtual string ComposeSettings(DataSettings settings)
{
if (settings == null)
return "";
return string.Format("DataProvider: {0}{2}DataConnectionString: {1}{2}",
settings.DataProvider,
settings.DataConnectionString,
Environment.NewLine
);
}
/// <summary>
/// Save settings to a file
/// </summary>
/// <param name="settings"></param>
public virtual void SaveSettings(DataSettings settings)
{
if (settings == null)
throw new ArgumentNullException("settings");
//use webHelper.MapPath instead of HostingEnvironment.MapPath which is not available in unit tests
string filePath = Path.Combine(MapPath("~/App_Data/"), filename);
if (!File.Exists(filePath))
{
using (File.Create(filePath))
{
//we use 'using' to close the file after it's created
}
}
var text = ComposeSettings(settings);
File.WriteAllText(filePath, text);
}
public EfDataProviderManager(DataSettings settings)
: base(settings)
{
}
/// <summary>
/// Parse settings
/// </summary>
/// <param name="text">Text of settings file</param>
/// <returns>Parsed data settings</returns>
protected virtual DataSettings ParseSettings(string text)
{
var shellSettings = new DataSettings();
if (String.IsNullOrEmpty(text))
return shellSettings;
//Old way of file reading. This leads to unexpected behavior when a user's FTP program transfers these files as ASCII (\r\n becomes \n).
//var settings = text.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
var settings = new List<string>();
using (var reader = new StringReader(text))
{
string str;
while ((str = reader.ReadLine()) != null)
settings.Add(str);
}
foreach (var setting in settings)
{
var separatorIndex = setting.IndexOf(separator);
if (separatorIndex == -1)
{
continue;
}
string key = setting.Substring(0, separatorIndex).Trim();
string value = setting.Substring(separatorIndex + 1).Trim();
switch (key)
{
case "DataProvider":
shellSettings.DataProvider = value;
break;
case "DataConnectionString":
shellSettings.DataConnectionString = value;
break;
default:
shellSettings.RawDataSettings.Add(key, value);
break;
}
}
return shellSettings;
}
/// <summary>
/// Ctor
/// </summary>
/// <param name="settings">Data settings</param>
protected BaseDataProviderManager(DataSettings settings)
{
if (settings == null)
throw new ArgumentNullException("settings");
this.Settings = settings;
}