Mini Shell
require 'fiddle/import'
class Reline::Windows
RESET_COLOR = "\e[0m"
def self.encoding
Encoding::UTF_8
end
def self.win?
true
end
def self.win_legacy_console?
@@legacy_console
end
def self.set_default_key_bindings(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
[ 0, 41] => :ed_unassigned, # input method on/off
[ 0, 72] => :ed_prev_history, # ↑
[ 0, 80] => :ed_next_history, # ↓
[ 0, 77] => :ed_next_char, # →
[ 0, 75] => :ed_prev_char, # ←
[ 0, 83] => :key_delete, # Del
[ 0, 71] => :ed_move_to_beg, # Home
[ 0, 79] => :ed_move_to_end # End
}.each_pair do |key, func|
config.add_default_key_binding_by_keymap(:emacs, key, func)
config.add_default_key_binding_by_keymap(:vi_insert, key, func)
config.add_default_key_binding_by_keymap(:vi_command, key, func)
end
{
[27, 32] => :em_set_mark, # M-<space>
[24, 24] => :em_exchange_mark, # C-x C-x
}.each_pair do |key, func|
config.add_default_key_binding_by_keymap(:emacs, key, func)
end
# Emulate ANSI key sequence.
{
[27, 91, 90] => :completion_journey_up, # S-Tab
}.each_pair do |key, func|
config.add_default_key_binding_by_keymap(:emacs, key, func)
config.add_default_key_binding_by_keymap(:vi_insert, key, func)
end
end
if defined? JRUBY_VERSION
require 'win32api'
else
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
end
VK_RETURN = 0x0D
VK_MENU = 0x12 # ALT key
VK_LMENU = 0xA4
VK_CONTROL = 0x11
VK_SHIFT = 0x10
VK_DIVIDE = 0x6F
KEY_EVENT = 0x01
WINDOW_BUFFER_SIZE_EVENT = 0x04
CAPSLOCK_ON = 0x0080
ENHANCED_KEY = 0x0100
LEFT_ALT_PRESSED = 0x0002
LEFT_CTRL_PRESSED = 0x0008
NUMLOCK_ON = 0x0020
RIGHT_ALT_PRESSED = 0x0001
RIGHT_CTRL_PRESSED = 0x0004
SCROLLLOCK_ON = 0x0040
SHIFT_PRESSED = 0x0010
VK_TAB = 0x09
VK_END = 0x23
VK_HOME = 0x24
VK_LEFT = 0x25
VK_UP = 0x26
VK_RIGHT = 0x27
VK_DOWN = 0x28
VK_DELETE = 0x2E
STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
FILE_TYPE_PIPE = 0x0003
FILE_NAME_INFO = 2
@@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')
@@ReadConsoleInputW = Win32API.new('kernel32', 'ReadConsoleInputW', ['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')
@@SetConsoleCursorInfo = Win32API.new('kernel32', 'SetConsoleCursorInfo', ['L', 'P'], 'L')
@@GetConsoleMode = Win32API.new('kernel32', 'GetConsoleMode', ['L', 'P'], 'L')
@@SetConsoleMode = Win32API.new('kernel32', 'SetConsoleMode', ['L', 'L'], 'L')
@@WaitForSingleObject = Win32API.new('kernel32', 'WaitForSingleObject', ['L', 'L'], 'L')
ENABLE_VIRTUAL_TERMINAL_PROCESSING = 4
private_class_method def self.getconsolemode
mode = "\000\000\000\000"
@@GetConsoleMode.call(@@hConsoleHandle, mode)
mode.unpack1('L')
end
private_class_method def self.setconsolemode(mode)
@@SetConsoleMode.call(@@hConsoleHandle, mode)
end
@@legacy_console = (getconsolemode() & ENABLE_VIRTUAL_TERMINAL_PROCESSING == 0)
#if @@legacy_console
# setconsolemode(getconsolemode() | ENABLE_VIRTUAL_TERMINAL_PROCESSING)
# @@legacy_console = (getconsolemode() & ENABLE_VIRTUAL_TERMINAL_PROCESSING == 0)
#end
@@input_buf = []
@@output_buf = []
@@output = STDOUT
def self.msys_tty?(io = @@hConsoleInputHandle)
# check if fd is a pipe
if @@GetFileType.call(io) != FILE_TYPE_PIPE
return false
end
bufsize = 1024
p_buffer = "\0" * bufsize
res = @@GetFileInformationByHandleEx.call(io, FILE_NAME_INFO, p_buffer, bufsize - 2)
return false if res == 0
# get pipe name: p_buffer layout is:
# struct _FILE_NAME_INFO {
# DWORD FileNameLength;
# WCHAR FileName[1];
# } FILE_NAME_INFO
len = p_buffer[0, 4].unpack1("L")
name = p_buffer[4, len].encode(Encoding::UTF_8, Encoding::UTF_16LE, invalid: :replace)
# Check if this could be a MSYS2 pty pipe ('\msys-XXXX-ptyN-XX')
# or a cygwin pty pipe ('\cygwin-XXXX-ptyN-XX')
name =~ /(msys-|cygwin-).*-pty/ ? true : false
end
KEY_MAP = [
# It's treated as Meta+Enter on Windows.
[ { control_keys: :CTRL, virtual_key_code: 0x0D }, "\e\r".bytes ],
[ { control_keys: :SHIFT, virtual_key_code: 0x0D }, "\e\r".bytes ],
# It's treated as Meta+Space on Windows.
[ { control_keys: :CTRL, char_code: 0x20 }, "\e ".bytes ],
# Emulate getwch() key sequences.
[ { control_keys: [], virtual_key_code: VK_UP }, [0, 72] ],
[ { control_keys: [], virtual_key_code: VK_DOWN }, [0, 80] ],
[ { control_keys: [], virtual_key_code: VK_RIGHT }, [0, 77] ],
[ { control_keys: [], virtual_key_code: VK_LEFT }, [0, 75] ],
[ { control_keys: [], virtual_key_code: VK_DELETE }, [0, 83] ],
[ { control_keys: [], virtual_key_code: VK_HOME }, [0, 71] ],
[ { control_keys: [], virtual_key_code: VK_END }, [0, 79] ],
# Emulate ANSI key sequence.
[ { control_keys: :SHIFT, virtual_key_code: VK_TAB }, [27, 91, 90] ],
]
@@hsg = nil
def self.process_key_event(repeat_count, virtual_key_code, virtual_scan_code, char_code, control_key_state)
# high-surrogate
if 0xD800 <= char_code and char_code <= 0xDBFF
@@hsg = char_code
return
end
# low-surrogate
if 0xDC00 <= char_code and char_code <= 0xDFFF
if @@hsg
char_code = 0x10000 + (@@hsg - 0xD800) * 0x400 + char_code - 0xDC00
@@hsg = nil
else
# no high-surrogate. ignored.
return
end
else
# ignore high-surrogate without low-surrogate if there
@@hsg = nil
end
key = KeyEventRecord.new(virtual_key_code, char_code, control_key_state)
match = KEY_MAP.find { |args,| key.matches?(**args) }
unless match.nil?
@@output_buf.concat(match.last)
return
end
# no char, only control keys
return if key.char_code == 0 and key.control_keys.any?
@@output_buf.push("\e".ord) if key.control_keys.include?(:ALT) and !key.control_keys.include?(:CTRL)
@@output_buf.concat(key.char.bytes)
end
def self.check_input_event
num_of_events = 0.chr * 8
while @@output_buf.empty?
Reline.core.line_editor.handle_signal
if @@WaitForSingleObject.(@@hConsoleInputHandle, 100) != 0 # max 0.1 sec
# prevent for background consolemode change
@@legacy_console = (getconsolemode() & ENABLE_VIRTUAL_TERMINAL_PROCESSING == 0)
next
end
next if @@GetNumberOfConsoleInputEvents.(@@hConsoleInputHandle, num_of_events) == 0 or num_of_events.unpack1('L') == 0
input_records = 0.chr * 20 * 80
read_event = 0.chr * 4
if @@ReadConsoleInputW.(@@hConsoleInputHandle, input_records, 80, read_event) != 0
read_events = read_event.unpack1('L')
0.upto(read_events) do |idx|
input_record = input_records[idx * 20, 20]
event = input_record[0, 2].unpack1('s*')
case event
when WINDOW_BUFFER_SIZE_EVENT
@@winch_handler.()
when KEY_EVENT
key_down = input_record[4, 4].unpack1('l*')
repeat_count = input_record[8, 2].unpack1('s*')
virtual_key_code = input_record[10, 2].unpack1('s*')
virtual_scan_code = input_record[12, 2].unpack1('s*')
char_code = input_record[14, 2].unpack1('S*')
control_key_state = input_record[16, 2].unpack1('S*')
is_key_down = key_down.zero? ? false : true
if is_key_down
process_key_event(repeat_count, virtual_key_code, virtual_scan_code, char_code, control_key_state)
end
end
end
end
end
end
def self.with_raw_input
yield
end
def self.getc(_timeout_second)
check_input_event
@@output_buf.shift
end
def self.ungetc(c)
@@output_buf.unshift(c)
end
def self.in_pasting?
not self.empty_buffer?
end
def self.empty_buffer?
if not @@output_buf.empty?
false
elsif @@kbhit.call == 0
true
else
false
end
end
def self.get_console_screen_buffer_info
# CONSOLE_SCREEN_BUFFER_INFO
# [ 0,2] dwSize.X
# [ 2,2] dwSize.Y
# [ 4,2] dwCursorPositions.X
# [ 6,2] dwCursorPositions.Y
# [ 8,2] wAttributes
# [10,2] srWindow.Left
# [12,2] srWindow.Top
# [14,2] srWindow.Right
# [16,2] srWindow.Bottom
# [18,2] dwMaximumWindowSize.X
# [20,2] dwMaximumWindowSize.Y
csbi = 0.chr * 22
return if @@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi) == 0
csbi
end
def self.get_screen_size
unless csbi = get_console_screen_buffer_info
return [1, 1]
end
csbi[0, 4].unpack('SS').reverse
end
def self.cursor_pos
unless csbi = get_console_screen_buffer_info
return Reline::CursorPos.new(0, 0)
end
x = csbi[4, 2].unpack1('s')
y = csbi[6, 2].unpack1('s')
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
y = cursor_pos.y - val
y = 0 if y < 0
@@SetConsoleCursorPosition.call(@@hConsoleHandle, y * 65536 + cursor_pos.x)
elsif val < 0
move_cursor_down(-val)
end
end
def self.move_cursor_down(val)
if val > 0
return unless csbi = get_console_screen_buffer_info
screen_height = get_screen_size.first
y = cursor_pos.y + val
y = screen_height - 1 if y > (screen_height - 1)
@@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
return unless csbi = get_console_screen_buffer_info
attributes = csbi[8, 2].unpack1('S')
cursor = csbi[4, 4].unpack1('L')
written = 0.chr * 4
@@FillConsoleOutputCharacter.call(@@hConsoleHandle, 0x20, get_screen_size.last - cursor_pos.x, cursor, written)
@@FillConsoleOutputAttribute.call(@@hConsoleHandle, attributes, get_screen_size.last - cursor_pos.x, cursor, written)
end
def self.scroll_down(val)
return if val < 0
return unless csbi = get_console_screen_buffer_info
buffer_width, buffer_lines, x, y, attributes, window_left, window_top, window_bottom = csbi.unpack('ssssSssx2s')
screen_height = window_bottom - window_top + 1
val = screen_height if val > screen_height
if @@legacy_console || window_left != 0
# unless ENABLE_VIRTUAL_TERMINAL,
# if srWindow.Left != 0 then it's conhost.exe hosted console
# and puts "\n" causes horizontal scroll. its glitch.
# FYI irb write from culumn 1, so this gives no gain.
scroll_rectangle = [0, val, buffer_width, buffer_lines - val].pack('s4')
destination_origin = 0 # y * 65536 + x
fill = [' '.ord, attributes].pack('SS')
@@ScrollConsoleScreenBuffer.call(@@hConsoleHandle, scroll_rectangle, nil, destination_origin, fill)
else
origin_x = x + 1
origin_y = y - window_top + 1
@@output.write [
(origin_y != screen_height) ? "\e[#{screen_height};H" : nil,
"\n" * val,
(origin_y != screen_height or !x.zero?) ? "\e[#{origin_y};#{origin_x}H" : nil
].join
end
end
def self.clear_screen
if @@legacy_console
return unless csbi = get_console_screen_buffer_info
buffer_width, _buffer_lines, attributes, window_top, window_bottom = csbi.unpack('ss@8S@12sx2s')
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)
else
@@output.write "\e[2J" "\e[H"
end
end
def self.set_screen_size(rows, columns)
raise NotImplementedError
end
def self.hide_cursor
size = 100
visible = 0 # 0 means false
cursor_info = [size, visible].pack('Li')
@@SetConsoleCursorInfo.call(@@hConsoleHandle, cursor_info)
end
def self.show_cursor
size = 100
visible = 1 # 1 means true
cursor_info = [size, visible].pack('Li')
@@SetConsoleCursorInfo.call(@@hConsoleHandle, cursor_info)
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
class KeyEventRecord
attr_reader :virtual_key_code, :char_code, :control_key_state, :control_keys
def initialize(virtual_key_code, char_code, control_key_state)
@virtual_key_code = virtual_key_code
@char_code = char_code
@control_key_state = control_key_state
@enhanced = control_key_state & ENHANCED_KEY != 0
(@control_keys = []).tap do |control_keys|
# symbols must be sorted to make comparison is easier later on
control_keys << :ALT if control_key_state & (LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED) != 0
control_keys << :CTRL if control_key_state & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED) != 0
control_keys << :SHIFT if control_key_state & SHIFT_PRESSED != 0
end.freeze
end
def char
@char_code.chr(Encoding::UTF_8)
end
def enhanced?
@enhanced
end
# Verifies if the arguments match with this key event.
# Nil arguments are ignored, but at least one must be passed as non-nil.
# To verify that no control keys were pressed, pass an empty array: `control_keys: []`.
def matches?(control_keys: nil, virtual_key_code: nil, char_code: nil)
raise ArgumentError, 'No argument was passed to match key event' if control_keys.nil? && virtual_key_code.nil? && char_code.nil?
(control_keys.nil? || [*control_keys].sort == @control_keys) &&
(virtual_key_code.nil? || @virtual_key_code == virtual_key_code) &&
(char_code.nil? || char_code == @char_code)
end
end
end
Zerion Mini Shell 1.0