static void WriteFilterPredicate <T>(string name, FilterPredicate <T>?filterPredicate)
{
if (filterPredicate == null)
{
return;
}
WriteIndent();
WriteName(name);
WriteValue(filterPredicate.Expression.Kind.ToString());
WriteIndent();
WriteValue(filterPredicate.Expression.Text);
WriteLine();
}
private static void WriteFilePropertyFilter(
string name,
FilterPredicate <long>?sizePredicate,
FilterPredicate <DateTime>?creationTimePredicate,
FilterPredicate <DateTime>?modifiedTimePredicate)
{
WriteName(name);
if (sizePredicate == null &&
creationTimePredicate == null &&
modifiedTimePredicate == null)
{
WriteNullValue();
WriteLine();
}
else
{
WriteLine();
WriteIndent();
WriteFilterPredicate("creation time", creationTimePredicate);
WriteFilterPredicate("modified time", modifiedTimePredicate);
WriteFilterPredicate("size", sizePredicate);
}
public static bool TryParseFileProperties(
IEnumerable <string> values,
string optionName,
out FilterPredicate <DateTime>?creationTimePredicate,
out FilterPredicate <DateTime>?modifiedTimePredicate,
out FilterPredicate <long>?sizePredicate)
{
creationTimePredicate = null;
modifiedTimePredicate = null;
sizePredicate = null;
foreach (string value in values)
{
Expression? expression = null;
OptionValue?optionValue = null;
try
{
expression = Expression.Parse(value);
if (OptionValues.FileProperty_CreationTime.IsKeyOrShortKey(expression.Identifier))
{
optionValue = OptionValues.FileProperty_CreationTime;
creationTimePredicate = new FilterPredicate <DateTime>(
expression,
PredicateHelpers.GetDateTimePredicate(expression));
}
else if (OptionValues.FileProperty_ModifiedTime.IsKeyOrShortKey(expression.Identifier))
{
optionValue = OptionValues.FileProperty_ModifiedTime;
modifiedTimePredicate = new FilterPredicate <DateTime>(
expression,
PredicateHelpers.GetDateTimePredicate(expression));
}
else if (OptionValues.FileProperty_Size.IsKeyOrShortKey(expression.Identifier))
{
optionValue = OptionValues.FileProperty_Size;
if (expression.Kind == ExpressionKind.DecrementExpression)
{
WriteOptionError(value, optionName, HelpProvider.GetExpressionsText(" ", includeDate: false));
return(false);
}
sizePredicate = new FilterPredicate <long>(expression, PredicateHelpers.GetLongPredicate(expression));
}
else
{
WriteOptionError(value, optionName, OptionValueProviders.FilePropertiesProvider);
return(false);
}
}
catch (ArgumentException)
{
if (expression != null &&
optionValue != null)
{
WriteOptionValueError(
expression.Value,
optionValue,
HelpProvider.GetExpressionsText(
" ",
includeDate: optionValue != OptionValues.FileProperty_Size));
}
else
{
WriteOptionError(value, optionName, HelpProvider.GetExpressionsText(" "));
}
return(false);
}
}
return(true);
}