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author | aycabta <aycabta@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-04-20 08:51:20 +0000 |
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committer | aycabta <aycabta@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2019-04-20 08:51:20 +0000 |
commit | 7f273ac6d0f05208b5b228da95205e20c0e8286c (patch) | |
tree | bfec81d78d487c6d8015f26fd6a5740cfef63d31 /lib/reline/windows.rb | |
parent | 91faab7f1477c65f71aee8324cdeca7b6f19434a (diff) | |
download | ruby-7f273ac6d0f05208b5b228da95205e20c0e8286c.tar.gz |
IRB is improved with Reline and RDoc
Reline is a readline stdlib compatible library. It also supports
multiline input. IRB is improved with Reline and supports multiline.
Besides, supports showing documents when completed.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67645 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/reline/windows.rb')
-rw-r--r-- | lib/reline/windows.rb | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/lib/reline/windows.rb b/lib/reline/windows.rb new file mode 100644 index 0000000000..f41ec17489 --- /dev/null +++ b/lib/reline/windows.rb @@ -0,0 +1,132 @@ +module Reline + VK_LMENU = 0xA4 + STD_OUTPUT_HANDLE = -11 + @@getwch = Win32API.new('msvcrt', '_getwch', [], 'I') + @@kbhit = Win32API.new('msvcrt', '_kbhit', [], 'I') + @@GetKeyState = Win32API.new('user32', 'GetKeyState', ['L'], 'L') + @@GetConsoleScreenBufferInfo = Win32API.new('kernel32', 'GetConsoleScreenBufferInfo', ['L', 'P'], 'L') + @@SetConsoleCursorPosition = Win32API.new('kernel32', 'SetConsoleCursorPosition', ['L', 'L'], 'L') + @@GetStdHandle = Win32API.new('kernel32', 'GetStdHandle', ['L'], 'L') + @@FillConsoleOutputCharacter = Win32API.new('kernel32', 'FillConsoleOutputCharacter', ['L', 'L', 'L', 'L', 'P'], 'L') + @@ScrollConsoleScreenBuffer = Win32API.new('kernel32', 'ScrollConsoleScreenBuffer', ['L', 'P', 'P', 'L', 'P'], 'L') + @@hConsoleHandle = @@GetStdHandle.call(STD_OUTPUT_HANDLE) + @@buf = [] + + def getwch + while @@kbhit.call == 0 + sleep(0.001) + end + result = [] + until @@kbhit.call == 0 + ret = @@getwch.call + begin + result.concat(ret.chr(Encoding::UTF_8).encode(Encoding.default_external).bytes) + rescue Encoding::UndefinedConversionError + result << ret + result << @@getwch.call if ret == 224 + end + end + result + end + + def getc + unless @@buf.empty? + return @@buf.shift + end + input = getwch + alt = (@@GetKeyState.call(VK_LMENU) & 0x80) != 0 + if input.size > 1 + @@buf.concat(input) + else # single byte + case input[0] + when 0x00 + getwch + alt = false + input = getwch + @@buf.concat(input) + when 0xE0 + @@buf.concat(input) + input = getwch + @@buf.concat(input) + when 0x03 + @@buf.concat(input) + else + @@buf.concat(input) + end + end + if alt + "\e".ord + else + @@buf.shift + end + end + + def self.get_screen_size + csbi = 0.chr * 24 + @@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi) + csbi[0, 4].unpack('SS') + end + + def self.cursor_pos + csbi = 0.chr * 24 + @@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi) + x = csbi[4, 2].unpack('s*').first + y = csbi[6, 4].unpack('s*').first + CursorPos.new(x, y) + end + + def self.move_cursor_column(val) + @@SetConsoleCursorPosition.call(@@hConsoleHandle, cursor_pos.y * 65536 + val) + end + + def self.move_cursor_up(val) + if val > 0 + @@SetConsoleCursorPosition.call(@@hConsoleHandle, (cursor_pos.y - val) * 65536 + cursor_pos.x) + elsif val < 0 + move_cursor_down(-val) + end + end + + def self.move_cursor_down(val) + if val > 0 + @@SetConsoleCursorPosition.call(@@hConsoleHandle, (cursor_pos.y + val) * 65536 + cursor_pos.x) + elsif val < 0 + move_cursor_up(-val) + end + end + + def self.erase_after_cursor + csbi = 0.chr * 24 + @@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi) + cursor = csbi[4, 4].unpack('L').first + written = 0.chr * 4 + @@FillConsoleOutputCharacter.call(@@hConsoleHandle, 0x20, get_screen_size.first - cursor_pos.x, cursor, written) + end + + def self.scroll_down(val) + return if val.zero? + scroll_rectangle = [0, val, get_screen_size.last, get_screen_size.first].pack('s4') + destination_origin = 0 # y * 65536 + x + fill = [' '.ord, 0].pack('SS') + @@ScrollConsoleScreenBuffer.call(@@hConsoleHandle, scroll_rectangle, nil, destination_origin, fill) + end + + def self.clear_screen + # TODO: Use FillConsoleOutputCharacter and FillConsoleOutputAttribute + print "\e[2J" + print "\e[1;1H" + end + + def self.set_screen_size(rows, columns) + raise NotImplementedError + end + + def prep + # do nothing + nil + end + + def deprep(otio) + # do nothing + end +end |