+++ /dev/null
-"""This implements an ANSI terminal emulator as a subclass of screen.
-
-$Id: ANSI.py 491 2007-12-16 20:04:57Z noah $
-"""
-# references:
-# http://www.retards.org/terminals/vt102.html
-# http://vt100.net/docs/vt102-ug/contents.html
-# http://vt100.net/docs/vt220-rm/
-# http://www.termsys.demon.co.uk/vtansi.htm
-
-import screen
-import FSM
-import copy
-import string
-
-def Emit (fsm):
-
- screen = fsm.memory[0]
- screen.write_ch(fsm.input_symbol)
-
-def StartNumber (fsm):
-
- fsm.memory.append (fsm.input_symbol)
-
-def BuildNumber (fsm):
-
- ns = fsm.memory.pop()
- ns = ns + fsm.input_symbol
- fsm.memory.append (ns)
-
-def DoBackOne (fsm):
-
- screen = fsm.memory[0]
- screen.cursor_back ()
-
-def DoBack (fsm):
-
- count = int(fsm.memory.pop())
- screen = fsm.memory[0]
- screen.cursor_back (count)
-
-def DoDownOne (fsm):
-
- screen = fsm.memory[0]
- screen.cursor_down ()
-
-def DoDown (fsm):
-
- count = int(fsm.memory.pop())
- screen = fsm.memory[0]
- screen.cursor_down (count)
-
-def DoForwardOne (fsm):
-
- screen = fsm.memory[0]
- screen.cursor_forward ()
-
-def DoForward (fsm):
-
- count = int(fsm.memory.pop())
- screen = fsm.memory[0]
- screen.cursor_forward (count)
-
-def DoUpReverse (fsm):
-
- screen = fsm.memory[0]
- screen.cursor_up_reverse()
-
-def DoUpOne (fsm):
-
- screen = fsm.memory[0]
- screen.cursor_up ()
-
-def DoUp (fsm):
-
- count = int(fsm.memory.pop())
- screen = fsm.memory[0]
- screen.cursor_up (count)
-
-def DoHome (fsm):
-
- c = int(fsm.memory.pop())
- r = int(fsm.memory.pop())
- screen = fsm.memory[0]
- screen.cursor_home (r,c)
-
-def DoHomeOrigin (fsm):
-
- c = 1
- r = 1
- screen = fsm.memory[0]
- screen.cursor_home (r,c)
-
-def DoEraseDown (fsm):
-
- screen = fsm.memory[0]
- screen.erase_down()
-
-def DoErase (fsm):
-
- arg = int(fsm.memory.pop())
- screen = fsm.memory[0]
- if arg == 0:
- screen.erase_down()
- elif arg == 1:
- screen.erase_up()
- elif arg == 2:
- screen.erase_screen()
-
-def DoEraseEndOfLine (fsm):
-
- screen = fsm.memory[0]
- screen.erase_end_of_line()
-
-def DoEraseLine (fsm):
-
- screen = fsm.memory[0]
- if arg == 0:
- screen.end_of_line()
- elif arg == 1:
- screen.start_of_line()
- elif arg == 2:
- screen.erase_line()
-
-def DoEnableScroll (fsm):
-
- screen = fsm.memory[0]
- screen.scroll_screen()
-
-def DoCursorSave (fsm):
-
- screen = fsm.memory[0]
- screen.cursor_save_attrs()
-
-def DoCursorRestore (fsm):
-
- screen = fsm.memory[0]
- screen.cursor_restore_attrs()
-
-def DoScrollRegion (fsm):
-
- screen = fsm.memory[0]
- r2 = int(fsm.memory.pop())
- r1 = int(fsm.memory.pop())
- screen.scroll_screen_rows (r1,r2)
-
-def DoMode (fsm):
-
- screen = fsm.memory[0]
- mode = fsm.memory.pop() # Should be 4
- # screen.setReplaceMode ()
-
-def Log (fsm):
-
- screen = fsm.memory[0]
- fsm.memory = [screen]
- fout = open ('log', 'a')
- fout.write (fsm.input_symbol + ',' + fsm.current_state + '\n')
- fout.close()
-
-class term (screen.screen):
- """This is a placeholder.
- In theory I might want to add other terminal types.
- """
- def __init__ (self, r=24, c=80):
- screen.screen.__init__(self, r,c)
-
-class ANSI (term):
-
- """This class encapsulates a generic terminal. It filters a stream and
- maintains the state of a screen object. """
-
- def __init__ (self, r=24,c=80):
-
- term.__init__(self,r,c)
-
- #self.screen = screen (24,80)
- self.state = FSM.FSM ('INIT',[self])
- self.state.set_default_transition (Log, 'INIT')
- self.state.add_transition_any ('INIT', Emit, 'INIT')
- self.state.add_transition ('\x1b', 'INIT', None, 'ESC')
- self.state.add_transition_any ('ESC', Log, 'INIT')
- self.state.add_transition ('(', 'ESC', None, 'G0SCS')
- self.state.add_transition (')', 'ESC', None, 'G1SCS')
- self.state.add_transition_list ('AB012', 'G0SCS', None, 'INIT')
- self.state.add_transition_list ('AB012', 'G1SCS', None, 'INIT')
- self.state.add_transition ('7', 'ESC', DoCursorSave, 'INIT')
- self.state.add_transition ('8', 'ESC', DoCursorRestore, 'INIT')
- self.state.add_transition ('M', 'ESC', DoUpReverse, 'INIT')
- self.state.add_transition ('>', 'ESC', DoUpReverse, 'INIT')
- self.state.add_transition ('<', 'ESC', DoUpReverse, 'INIT')
- self.state.add_transition ('=', 'ESC', None, 'INIT') # Selects application keypad.
- self.state.add_transition ('#', 'ESC', None, 'GRAPHICS_POUND')
- self.state.add_transition_any ('GRAPHICS_POUND', None, 'INIT')
- self.state.add_transition ('[', 'ESC', None, 'ELB')
- # ELB means Escape Left Bracket. That is ^[[
- self.state.add_transition ('H', 'ELB', DoHomeOrigin, 'INIT')
- self.state.add_transition ('D', 'ELB', DoBackOne, 'INIT')
- self.state.add_transition ('B', 'ELB', DoDownOne, 'INIT')
- self.state.add_transition ('C', 'ELB', DoForwardOne, 'INIT')
- self.state.add_transition ('A', 'ELB', DoUpOne, 'INIT')
- self.state.add_transition ('J', 'ELB', DoEraseDown, 'INIT')
- self.state.add_transition ('K', 'ELB', DoEraseEndOfLine, 'INIT')
- self.state.add_transition ('r', 'ELB', DoEnableScroll, 'INIT')
- self.state.add_transition ('m', 'ELB', None, 'INIT')
- self.state.add_transition ('?', 'ELB', None, 'MODECRAP')
- self.state.add_transition_list (string.digits, 'ELB', StartNumber, 'NUMBER_1')
- self.state.add_transition_list (string.digits, 'NUMBER_1', BuildNumber, 'NUMBER_1')
- self.state.add_transition ('D', 'NUMBER_1', DoBack, 'INIT')
- self.state.add_transition ('B', 'NUMBER_1', DoDown, 'INIT')
- self.state.add_transition ('C', 'NUMBER_1', DoForward, 'INIT')
- self.state.add_transition ('A', 'NUMBER_1', DoUp, 'INIT')
- self.state.add_transition ('J', 'NUMBER_1', DoErase, 'INIT')
- self.state.add_transition ('K', 'NUMBER_1', DoEraseLine, 'INIT')
- self.state.add_transition ('l', 'NUMBER_1', DoMode, 'INIT')
- ### It gets worse... the 'm' code can have infinite number of
- ### number;number;number before it. I've never seen more than two,
- ### but the specs say it's allowed. crap!
- self.state.add_transition ('m', 'NUMBER_1', None, 'INIT')
- ### LED control. Same problem as 'm' code.
- self.state.add_transition ('q', 'NUMBER_1', None, 'INIT')
-
- # \E[?47h appears to be "switch to alternate screen"
- # \E[?47l restores alternate screen... I think.
- self.state.add_transition_list (string.digits, 'MODECRAP', StartNumber, 'MODECRAP_NUM')
- self.state.add_transition_list (string.digits, 'MODECRAP_NUM', BuildNumber, 'MODECRAP_NUM')
- self.state.add_transition ('l', 'MODECRAP_NUM', None, 'INIT')
- self.state.add_transition ('h', 'MODECRAP_NUM', None, 'INIT')
-
-#RM Reset Mode Esc [ Ps l none
- self.state.add_transition (';', 'NUMBER_1', None, 'SEMICOLON')
- self.state.add_transition_any ('SEMICOLON', Log, 'INIT')
- self.state.add_transition_list (string.digits, 'SEMICOLON', StartNumber, 'NUMBER_2')
- self.state.add_transition_list (string.digits, 'NUMBER_2', BuildNumber, 'NUMBER_2')
- self.state.add_transition_any ('NUMBER_2', Log, 'INIT')
- self.state.add_transition ('H', 'NUMBER_2', DoHome, 'INIT')
- self.state.add_transition ('f', 'NUMBER_2', DoHome, 'INIT')
- self.state.add_transition ('r', 'NUMBER_2', DoScrollRegion, 'INIT')
- ### It gets worse... the 'm' code can have infinite number of
- ### number;number;number before it. I've never seen more than two,
- ### but the specs say it's allowed. crap!
- self.state.add_transition ('m', 'NUMBER_2', None, 'INIT')
- ### LED control. Same problem as 'm' code.
- self.state.add_transition ('q', 'NUMBER_2', None, 'INIT')
-
- def process (self, c):
-
- self.state.process(c)
-
- def process_list (self, l):
-
- self.write(l)
-
- def write (self, s):
-
- for c in s:
- self.process(c)
-
- def flush (self):
-
- pass
-
- def write_ch (self, ch):
-
- """This puts a character at the current cursor position. cursor
- position if moved forward with wrap-around, but no scrolling is done if
- the cursor hits the lower-right corner of the screen. """
-
- #\r and \n both produce a call to crlf().
- ch = ch[0]
-
- if ch == '\r':
- # self.crlf()
- return
- if ch == '\n':
- self.crlf()
- return
- if ch == chr(screen.BS):
- self.cursor_back()
- self.put_abs(self.cur_r, self.cur_c, ' ')
- return
-
- if ch not in string.printable:
- fout = open ('log', 'a')
- fout.write ('Nonprint: ' + str(ord(ch)) + '\n')
- fout.close()
- return
- self.put_abs(self.cur_r, self.cur_c, ch)
- old_r = self.cur_r
- old_c = self.cur_c
- self.cursor_forward()
- if old_c == self.cur_c:
- self.cursor_down()
- if old_r != self.cur_r:
- self.cursor_home (self.cur_r, 1)
- else:
- self.scroll_up ()
- self.cursor_home (self.cur_r, 1)
- self.erase_line()
-
-# def test (self):
-#
-# import sys
-# write_text = 'I\'ve got a ferret sticking up my nose.\n' + \
-# '(He\'s got a ferret sticking up his nose.)\n' + \
-# 'How it got there I can\'t tell\n' + \
-# 'But now it\'s there it hurts like hell\n' + \
-# 'And what is more it radically affects my sense of smell.\n' + \
-# '(His sense of smell.)\n' + \
-# 'I can see a bare-bottomed mandril.\n' + \
-# '(Slyly eyeing his other nostril.)\n' + \
-# 'If it jumps inside there too I really don\'t know what to do\n' + \
-# 'I\'ll be the proud posessor of a kind of nasal zoo.\n' + \
-# '(A nasal zoo.)\n' + \
-# 'I\'ve got a ferret sticking up my nose.\n' + \
-# '(And what is worst of all it constantly explodes.)\n' + \
-# '"Ferrets don\'t explode," you say\n' + \
-# 'But it happened nine times yesterday\n' + \
-# 'And I should know for each time I was standing in the way.\n' + \
-# 'I\'ve got a ferret sticking up my nose.\n' + \
-# '(He\'s got a ferret sticking up his nose.)\n' + \
-# 'How it got there I can\'t tell\n' + \
-# 'But now it\'s there it hurts like hell\n' + \
-# 'And what is more it radically affects my sense of smell.\n' + \
-# '(His sense of smell.)'
-# self.fill('.')
-# self.cursor_home()
-# for c in write_text:
-# self.write_ch (c)
-# print str(self)
-#
-#if __name__ == '__main__':
-# t = ANSI(6,65)
-# t.test()
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