void FindMatchesThreadProc(ICancellable cnc)
{
string eol = null;
string pattern = null;
string text = null;
bool first_only = false;
IRegexEngine engine = null;
UITaskHelper.Invoke(this,
() =>
{
eol = GetEolOption( );
pattern = ucPattern.GetBaseTextData(eol).Text;
if (cnc.IsCancellationRequested)
{
return;
}
text = ucText.GetBaseTextData(eol).Text;
if (cnc.IsCancellationRequested)
{
return;
}
first_only = cbShowFirstOnly.IsChecked == true;
engine = CurrentRegexEngine;
});
if (cnc.IsCancellationRequested)
{
return;
}
if (string.IsNullOrEmpty(pattern))
{
UITaskHelper.BeginInvoke(this,
() =>
{
ucText.SetMatches(RegexMatches.Empty, cbShowCaptures.IsChecked == true, GetEolOption( ));
ucMatches.ShowNoPattern( );
lblMatches.Text = "Matches";
pnlShowAll.Visibility = Visibility.Collapsed;
pnlShowFirst.Visibility = Visibility.Collapsed;
});
}
else
{
IMatcher parsed_pattern = null;
RegexMatches matches = null;
bool is_good = false;
try
{
UITaskHelper.BeginInvoke(this, CancellationToken.None, () => ucMatches.ShowMatchingInProgress(true));
parsed_pattern = engine.ParsePattern(pattern);
var indeterminate_progress_thread = new Thread(IndeterminateProgressThreadProc)
{
IsBackground = true
};
try
{
indeterminate_progress_thread.Start( );
matches = parsed_pattern.Matches(text, cnc);
}
finally
{
HideIndeterminateProgress(indeterminate_progress_thread);
}
is_good = true;
}
catch (Exception exc)
{
if (cnc.IsCancellationRequested)
{
return;
}
UITaskHelper.BeginInvoke(this, CancellationToken.None,
() =>
{
ucText.SetMatches(RegexMatches.Empty, cbShowCaptures.IsChecked == true, GetEolOption( ));
ucMatches.ShowError(exc, engine.Capabilities.HasFlag(RegexEngineCapabilityEnum.ScrollErrorsToEnd));
lblMatches.Text = "Error";
pnlShowAll.Visibility = Visibility.Collapsed;
pnlShowFirst.Visibility = Visibility.Collapsed;
});
Debug.Assert(!is_good);
}
finally
{
UITaskHelper.BeginInvoke(this, CancellationToken.None, () => ucMatches.ShowMatchingInProgress(false));
}
if (cnc.IsCancellationRequested)
{
return;
}
if (is_good)
{
int count = matches.Count;
var matches_to_show = first_only ?
new RegexMatches(Math.Min(1, count), matches.Matches.Take(1)) :
matches;
if (cnc.IsCancellationRequested)
{
return;
}
UITaskHelper.BeginInvoke(this,
() =>
{
ucText.SetMatches(matches_to_show, cbShowCaptures.IsChecked == true, GetEolOption( ));
ucMatches.SetMatches(text, matches_to_show, first_only, cbShowSucceededGroupsOnly.IsChecked == true, cbShowCaptures.IsChecked == true);
lblMatches.Text = count == 0 ? "Matches" : count == 1 ? "1 match" : $"{count:#,##0} matches";
pnlShowAll.Visibility = first_only && count > 1 ? Visibility.Visible : Visibility.Collapsed;
pnlShowFirst.Visibility = !first_only && count > 1 ? Visibility.Visible : Visibility.Collapsed;
});
}
}
}
