/// <summary>
/// Creates a <see cref="NameValueSettings"/> from an xml element of a config file.
/// <para>
/// NOTE: The settings collection is case sensitive.
/// </para>
/// </summary>
/// <param name="section">The XElement that contains the configuration information from the configuration file. Provides direct access to the XML contents of the configuration section</param>
/// <param name="cryptoProvider">An <see cref="ICryptoProvider"/> instance that can be used to decrypt settings.</param>
/// <param name="decryptAll">If <see langword="true" /> all settings will be decrypted. This is ignored since the <see cref="NameValueSettings"/> handles this by itself.</param>
/// <returns>A <see cref="NameValueSettings"/> instance containing the configuration data, or empty if section is null or in fact empty.</returns>
public object ReadSection(XElement section, ICryptoProvider cryptoProvider, bool decryptAll)
{
Ensure.ArgumentNotNull(section, "section");
_errors = null;
//Create a case sensitive collection
var data = new NameValueSettings();
if (section != null)
{
var settings = from node in section.Elements(ConfigElement.KeyValueSettingNode)
let key = node.Attribute(ConfigElement.SettingKeyAttribute)
let val = node.Attribute(ConfigElement.SettingValueAttribute)
where key != null && val != null
select new
{
Key = key.Value,
Value = val.Value,
Comment = node.PreviousNode as XComment
};
foreach (var node in settings)
{
string val = node.Value;
bool encrypted = false;
if (cryptoProvider != null && cryptoProvider.IsEncrypted(val))
{
try
{
val = cryptoProvider.Decrypt(val);
encrypted = true;
}
catch
{
if (_errors == null)
{
_errors = new List<ConfigError>();
}
_errors.Add(
new ConfigError(
ConfigErrorCode.InvalidConfigValue,
string.Format("Reading value of setting {0} failed, value appears to be encrypted, but decryption failed.", node.Key)));
continue;
}
}
data.SetSetting(node.Key, val, encrypted);
if (node.Comment != null)
{
data.SetDescription(node.Key, node.Comment.Value);
}
}
}
return data;
}
