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require 'fiddle/import'
class Reline::Windows
RAW_KEYSTROKE_CONFIG = {
[224, 72] => :ed_prev_history, # ↑
[224, 80] => :ed_next_history, # ↓
[224, 77] => :ed_next_char, # →
[224, 75] => :ed_prev_char, # ←
[224, 83] => :key_delete, # Del
[224, 71] => :ed_move_to_beg, # Home
[224, 79] => :ed_move_to_end, # End
}.each_key(&:freeze).freeze
class Win32API
DLL = {}
TYPEMAP = {"0" => Fiddle::TYPE_VOID, "S" => Fiddle::TYPE_VOIDP, "I" => Fiddle::TYPE_LONG}
POINTER_TYPE = Fiddle::SIZEOF_VOIDP == Fiddle::SIZEOF_LONG_LONG ? 'q*' : 'l!*'
WIN32_TYPES = "VPpNnLlIi"
DL_TYPES = "0SSI"
def initialize(dllname, func, import, export = "0", calltype = :stdcall)
@proto = [import].join.tr(WIN32_TYPES, DL_TYPES).sub(/^(.)0*$/, '\1')
import = @proto.chars.map {|win_type| TYPEMAP[win_type.tr(WIN32_TYPES, DL_TYPES)]}
export = TYPEMAP[export.tr(WIN32_TYPES, DL_TYPES)]
calltype = Fiddle::Importer.const_get(:CALL_TYPE_TO_ABI)[calltype]
handle = DLL[dllname] ||=
begin
Fiddle.dlopen(dllname)
rescue Fiddle::DLError
raise unless File.extname(dllname).empty?
Fiddle.dlopen(dllname + ".dll")
end
@func = Fiddle::Function.new(handle[func], import, export, calltype)
rescue Fiddle::DLError => e
raise LoadError, e.message, e.backtrace
end
def call(*args)
import = @proto.split("")
args.each_with_index do |x, i|
args[i], = [x == 0 ? nil : x].pack("p").unpack(POINTER_TYPE) if import[i] == "S"
args[i], = [x].pack("I").unpack("i") if import[i] == "I"
end
ret, = @func.call(*args)
return ret || 0
end
end
VK_MENU = 0x12
VK_SHIFT = 0x10
STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
WINDOW_BUFFER_SIZE_EVENT = 0x04
@@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)
@@hConsoleInputHandle = @@GetStdHandle.call(STD_INPUT_HANDLE)
@@GetNumberOfConsoleInputEvents = Win32API.new('kernel32', 'GetNumberOfConsoleInputEvents', ['L', 'P'], 'L')
@@ReadConsoleInput = Win32API.new('kernel32', 'ReadConsoleInput', ['L', 'P', 'L', 'P'], 'L')
@@input_buf = []
@@output_buf = []
def self.getwch
unless @@input_buf.empty?
return @@input_buf.shift
end
while @@kbhit.call == 0
sleep(0.001)
end
until @@kbhit.call == 0
ret = @@getwch.call
begin
bytes = ret.chr(Encoding::UTF_8).encode(Encoding.default_external).bytes
@@input_buf.push(*bytes)
rescue Encoding::UndefinedConversionError
@@input_buf << ret
@@input_buf << @@getwch.call if ret == 224
end
end
@@input_buf.shift
end
def self.getc
num_of_events = 0.chr * 8
while @@GetNumberOfConsoleInputEvents.(@@hConsoleInputHandle, num_of_events) != 0 and num_of_events.unpack('L').first > 0
input_record = 0.chr * 18
read_event = 0.chr * 4
if @@ReadConsoleInput.(@@hConsoleInputHandle, input_record, 1, read_event) != 0
event = input_record[0, 2].unpack('s*').first
if event == WINDOW_BUFFER_SIZE_EVENT
@@winch_handler.()
end
end
end
unless @@output_buf.empty?
return @@output_buf.shift
end
input = getwch
alt = (@@GetKeyState.call(VK_MENU) & 0x80) != 0
shift_enter = !input.instance_of?(Array) && (@@GetKeyState.call(VK_SHIFT) & 0x80) != 0 && input == 0x0D
if shift_enter
# It's treated as Meta+Enter on Windows
@@output_buf.push("\e".ord)
@@output_buf.push(input)
else
case input
when 0x00
getwch
alt = false
input = getwch
@@output_buf.push(*input)
when 0xE0
@@output_buf.push(input)
input = getwch
@@output_buf.push(*input)
when 0x03
@@output_buf.push(input)
else
@@output_buf.push(input)
end
end
if alt
"\e".ord
else
@@output_buf.shift
end
end
def self.ungetc(c)
@@output_buf.unshift(c)
end
def self.get_screen_size
csbi = 0.chr * 22
@@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi)
csbi[0, 4].unpack('SS').reverse
end
def self.cursor_pos
csbi = 0.chr * 22
@@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi)
x = csbi[4, 2].unpack('s*').first
y = csbi[6, 2].unpack('s*').first
Reline::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.last - cursor_pos.x, cursor, written)
end
def self.scroll_down(val)
return if val.zero?
scroll_rectangle = [0, val, get_screen_size.first, get_screen_size.last].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 self.set_winch_handler(&handler)
@@winch_handler = handler
end
def self.prep
# do nothing
nil
end
def self.deprep(otio)
# do nothing
end
end
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