diff options
Diffstat (limited to 'lib/reline/windows.rb')
| -rw-r--r-- | lib/reline/windows.rb | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/reline/windows.rb b/lib/reline/windows.rb index c229c8536f..2a406e39d3 100644 --- a/lib/reline/windows.rb +++ b/lib/reline/windows.rb @@ -92,6 +92,7 @@ class Reline::Windows @@ReadConsoleInput = Win32API.new('kernel32', 'ReadConsoleInput', ['L', 'P', 'L', 'P'], 'L') @@GetFileType = Win32API.new('kernel32', 'GetFileType', ['L'], 'L') @@GetFileInformationByHandleEx = Win32API.new('kernel32', 'GetFileInformationByHandleEx', ['L', 'I', 'P', 'L'], 'I') + @@FillConsoleOutputAttribute = Win32API.new('kernel32', 'FillConsoleOutputAttribute', ['L', 'L', 'L', 'L', 'P'], 'L') @@input_buf = [] @@output_buf = [] @@ -249,9 +250,17 @@ class Reline::Windows end def self.clear_screen - # TODO: Use FillConsoleOutputCharacter and FillConsoleOutputAttribute - write "\e[2J" - write "\e[1;1H" + csbi = 0.chr * 22 + return if @@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi) == 0 + buffer_width = csbi[0, 2].unpack('S').first + attributes = csbi[8, 2].unpack('S').first + _window_left, window_top, _window_right, window_bottom = *csbi[10,8].unpack('S*') + fill_length = buffer_width * (window_bottom - window_top + 1) + screen_topleft = window_top * 65536 + written = 0.chr * 4 + @@FillConsoleOutputCharacter.call(@@hConsoleHandle, 0x20, fill_length, screen_topleft, written) + @@FillConsoleOutputAttribute.call(@@hConsoleHandle, attributes, fill_length, screen_topleft, written) + @@SetConsoleCursorPosition.call(@@hConsoleHandle, screen_topleft) end def self.set_screen_size(rows, columns) |