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f8ea2860b0
The command prompt on Windows always uses Unicode to take input and print output but most Reline implementation depends on Encoding.default_external. This commit introduces an abstracted structure about the encoding of Reline.
240 lines
7.3 KiB
Ruby
240 lines
7.3 KiB
Ruby
require 'fiddle/import'
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class Reline::Windows
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def self.encoding
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Encoding::UTF_8
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end
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RAW_KEYSTROKE_CONFIG = {
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[224, 72] => :ed_prev_history, # ↑
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[224, 80] => :ed_next_history, # ↓
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[224, 77] => :ed_next_char, # →
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[224, 75] => :ed_prev_char, # ←
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[224, 83] => :key_delete, # Del
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[224, 71] => :ed_move_to_beg, # Home
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[224, 79] => :ed_move_to_end, # End
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[ 0, 41] => :ed_unassigned, # input method on/off
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[ 0, 72] => :ed_prev_history, # ↑
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[ 0, 80] => :ed_next_history, # ↓
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[ 0, 77] => :ed_next_char, # →
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[ 0, 75] => :ed_prev_char, # ←
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[ 0, 83] => :key_delete, # Del
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[ 0, 71] => :ed_move_to_beg, # Home
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[ 0, 79] => :ed_move_to_end # End
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}
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if defined? JRUBY_VERSION
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require 'win32api'
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else
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class Win32API
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DLL = {}
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TYPEMAP = {"0" => Fiddle::TYPE_VOID, "S" => Fiddle::TYPE_VOIDP, "I" => Fiddle::TYPE_LONG}
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POINTER_TYPE = Fiddle::SIZEOF_VOIDP == Fiddle::SIZEOF_LONG_LONG ? 'q*' : 'l!*'
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WIN32_TYPES = "VPpNnLlIi"
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DL_TYPES = "0SSI"
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def initialize(dllname, func, import, export = "0", calltype = :stdcall)
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@proto = [import].join.tr(WIN32_TYPES, DL_TYPES).sub(/^(.)0*$/, '\1')
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import = @proto.chars.map {|win_type| TYPEMAP[win_type.tr(WIN32_TYPES, DL_TYPES)]}
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export = TYPEMAP[export.tr(WIN32_TYPES, DL_TYPES)]
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calltype = Fiddle::Importer.const_get(:CALL_TYPE_TO_ABI)[calltype]
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handle = DLL[dllname] ||=
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begin
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Fiddle.dlopen(dllname)
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rescue Fiddle::DLError
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raise unless File.extname(dllname).empty?
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Fiddle.dlopen(dllname + ".dll")
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end
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@func = Fiddle::Function.new(handle[func], import, export, calltype)
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rescue Fiddle::DLError => e
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raise LoadError, e.message, e.backtrace
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end
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def call(*args)
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import = @proto.split("")
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args.each_with_index do |x, i|
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args[i], = [x == 0 ? nil : x].pack("p").unpack(POINTER_TYPE) if import[i] == "S"
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args[i], = [x].pack("I").unpack("i") if import[i] == "I"
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end
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ret, = @func.call(*args)
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return ret || 0
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end
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end
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end
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VK_MENU = 0x12
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VK_LMENU = 0xA4
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VK_CONTROL = 0x11
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VK_SHIFT = 0x10
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STD_INPUT_HANDLE = -10
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STD_OUTPUT_HANDLE = -11
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WINDOW_BUFFER_SIZE_EVENT = 0x04
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@@getwch = Win32API.new('msvcrt', '_getwch', [], 'I')
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@@kbhit = Win32API.new('msvcrt', '_kbhit', [], 'I')
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@@GetKeyState = Win32API.new('user32', 'GetKeyState', ['L'], 'L')
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@@GetConsoleScreenBufferInfo = Win32API.new('kernel32', 'GetConsoleScreenBufferInfo', ['L', 'P'], 'L')
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@@SetConsoleCursorPosition = Win32API.new('kernel32', 'SetConsoleCursorPosition', ['L', 'L'], 'L')
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@@GetStdHandle = Win32API.new('kernel32', 'GetStdHandle', ['L'], 'L')
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@@FillConsoleOutputCharacter = Win32API.new('kernel32', 'FillConsoleOutputCharacter', ['L', 'L', 'L', 'L', 'P'], 'L')
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@@ScrollConsoleScreenBuffer = Win32API.new('kernel32', 'ScrollConsoleScreenBuffer', ['L', 'P', 'P', 'L', 'P'], 'L')
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@@hConsoleHandle = @@GetStdHandle.call(STD_OUTPUT_HANDLE)
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@@hConsoleInputHandle = @@GetStdHandle.call(STD_INPUT_HANDLE)
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@@GetNumberOfConsoleInputEvents = Win32API.new('kernel32', 'GetNumberOfConsoleInputEvents', ['L', 'P'], 'L')
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@@ReadConsoleInput = Win32API.new('kernel32', 'ReadConsoleInput', ['L', 'P', 'L', 'P'], 'L')
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@@input_buf = []
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@@output_buf = []
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def self.getwch
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unless @@input_buf.empty?
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return @@input_buf.shift
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end
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while @@kbhit.call == 0
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sleep(0.001)
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end
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until @@kbhit.call == 0
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ret = @@getwch.call
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if ret == 0 or ret == 0xE0
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@@input_buf << ret
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ret = @@getwch.call
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@@input_buf << ret
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return @@input_buf.shift
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end
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begin
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bytes = ret.chr(Encoding::UTF_8).bytes
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@@input_buf.push(*bytes)
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rescue Encoding::UndefinedConversionError
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@@input_buf << ret
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@@input_buf << @@getwch.call if ret == 224
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end
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end
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@@input_buf.shift
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end
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def self.getc
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num_of_events = 0.chr * 8
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while @@GetNumberOfConsoleInputEvents.(@@hConsoleInputHandle, num_of_events) != 0 and num_of_events.unpack('L').first > 0
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input_record = 0.chr * 18
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read_event = 0.chr * 4
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if @@ReadConsoleInput.(@@hConsoleInputHandle, input_record, 1, read_event) != 0
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event = input_record[0, 2].unpack('s*').first
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if event == WINDOW_BUFFER_SIZE_EVENT
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@@winch_handler.()
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end
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end
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end
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unless @@output_buf.empty?
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return @@output_buf.shift
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end
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input = getwch
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meta = (@@GetKeyState.call(VK_LMENU) & 0x80) != 0
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control = (@@GetKeyState.call(VK_CONTROL) & 0x80) != 0
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shift = (@@GetKeyState.call(VK_SHIFT) & 0x80) != 0
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force_enter = !input.instance_of?(Array) && (control or shift) && input == 0x0D
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if force_enter
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# It's treated as Meta+Enter on Windows
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@@output_buf.push("\e".ord)
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@@output_buf.push(input)
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else
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case input
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when 0x00
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meta = false
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@@output_buf.push(input)
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input = getwch
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@@output_buf.push(*input)
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when 0xE0
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@@output_buf.push(input)
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input = getwch
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@@output_buf.push(*input)
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when 0x03
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@@output_buf.push(input)
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else
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@@output_buf.push(input)
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end
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end
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if meta
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"\e".ord
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else
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@@output_buf.shift
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end
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end
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def self.ungetc(c)
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@@output_buf.unshift(c)
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end
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def self.get_screen_size
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csbi = 0.chr * 22
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@@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi)
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csbi[0, 4].unpack('SS').reverse
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end
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def self.cursor_pos
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csbi = 0.chr * 22
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@@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi)
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x = csbi[4, 2].unpack('s*').first
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y = csbi[6, 2].unpack('s*').first
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Reline::CursorPos.new(x, y)
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end
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def self.move_cursor_column(val)
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@@SetConsoleCursorPosition.call(@@hConsoleHandle, cursor_pos.y * 65536 + val)
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end
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def self.move_cursor_up(val)
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if val > 0
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@@SetConsoleCursorPosition.call(@@hConsoleHandle, (cursor_pos.y - val) * 65536 + cursor_pos.x)
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elsif val < 0
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move_cursor_down(-val)
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end
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end
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def self.move_cursor_down(val)
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if val > 0
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@@SetConsoleCursorPosition.call(@@hConsoleHandle, (cursor_pos.y + val) * 65536 + cursor_pos.x)
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elsif val < 0
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move_cursor_up(-val)
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end
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end
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def self.erase_after_cursor
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csbi = 0.chr * 24
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@@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi)
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cursor = csbi[4, 4].unpack('L').first
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written = 0.chr * 4
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@@FillConsoleOutputCharacter.call(@@hConsoleHandle, 0x20, get_screen_size.last - cursor_pos.x, cursor, written)
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end
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def self.scroll_down(val)
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return if val.zero?
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scroll_rectangle = [0, val, get_screen_size.first, get_screen_size.last].pack('s4')
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destination_origin = 0 # y * 65536 + x
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fill = [' '.ord, 0].pack('SS')
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@@ScrollConsoleScreenBuffer.call(@@hConsoleHandle, scroll_rectangle, nil, destination_origin, fill)
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end
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def self.clear_screen
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# TODO: Use FillConsoleOutputCharacter and FillConsoleOutputAttribute
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print "\e[2J"
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print "\e[1;1H"
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end
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def self.set_screen_size(rows, columns)
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raise NotImplementedError
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end
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def self.set_winch_handler(&handler)
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@@winch_handler = handler
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end
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def self.prep
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# do nothing
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nil
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end
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def self.deprep(otio)
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# do nothing
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end
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end
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