Cleaning up ANSI.py. New ANSI name and new method 'get_region()' for screen.py.

git-svn-id: http://pexpect.svn.sourceforge.net/svnroot/pexpect/trunk@24 656d521f-e311-0410-88e0-e7920216d269

1 files changed, 224 insertions, 0 deletions

diff --git a/pexpect/ANSI.py b/pexpect/ANSI.py
new file mode 100755
index 0000000..0ae3969
--- /dev/null
+++ b/pexpect/ANSI.py
@@ -0,0 +1,224 @@
+#!/usr/bin/env python
+
+# 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.something[0]
+        screen.write(fsm.input_symbol)
+def StartNumber (fsm):
+        fsm.something.append (fsm.input_symbol)
+def BuildNumber (fsm):
+        ns = fsm.something.pop()
+        ns = ns + fsm.input_symbol
+        fsm.something.append (ns)
+def DoBackOne (fsm):
+        screen = fsm.something[0]
+        screen.cursor_back ()
+def DoBack (fsm):
+        count = int(fsm.something.pop())
+        screen = fsm.something[0]
+        screen.cursor_back (count)
+def DoDownOne (fsm):
+        screen = fsm.something[0]
+        screen.cursor_down ()
+def DoDown (fsm):
+        count = int(fsm.something.pop())
+        screen = fsm.something[0]
+        screen.cursor_down (count)
+def DoForwardOne (fsm):
+        screen = fsm.something[0]
+        screen.cursor_forward ()
+def DoForward (fsm):
+        count = int(fsm.something.pop())
+        screen = fsm.something[0]
+        screen.cursor_forward (count)
+def DoUpReverse (fsm):
+        screen = fsm.something[0]
+        screen.cursor_up_reverse()
+def DoUpOne (fsm):
+        screen = fsm.something[0]
+        screen.cursor_up ()
+def DoUp (fsm):
+        count = int(fsm.something.pop())
+        screen = fsm.something[0]
+        screen.cursor_up (count)
+def DoHome (fsm):
+        c = int(fsm.something.pop())
+        r = int(fsm.something.pop())
+        screen = fsm.something[0]
+        screen.cursor_home (r,c)
+def DoHomeOrigin (fsm):
+        c = 1
+        r = 1
+        screen = fsm.something[0]
+        screen.cursor_home (r,c)
+def DoEraseDown (fsm):
+        screen = fsm.something[0]
+        screen.erase_down()
+def DoErase (fsm):
+        arg = int(fsm.something.pop())
+        screen = fsm.something[0]
+        if arg == 0:
+                screen.erase_down()
+        elif arg == 1:
+                screen.erase_up()
+        elif arg == 2:
+                screen.erase_screen()
+def DoEraseEndOfLine (fsm):
+        screen = fsm.something[0]
+        screen.erase_end_of_line()
+def DoEraseLine (fsm):
+        screen = fsm.something[0]
+        if arg == 0:
+                screen.end_of_line()
+        elif arg == 1:
+                screen.start_of_line()
+        elif arg == 2:
+                screen.erase_line()
+def DoEnableScroll (fsm):
+        # Scrolling is on by default.
+        pass
+def DoCursorSave (fsm):
+        screen = fsm.something[0]
+        screen.cursor_save_attrs()
+def DoCursorRestore (fsm):
+        screen = fsm.something[0]
+        screen.cursor_restore_attrs()
+
+def DoMode (fsm):
+        screen = fsm.something[0]
+        mode = fsm.something.pop() # Should be 4
+        # screen.setReplaceMode ()
+def Log (fsm):
+        screen = fsm.something[0]
+        fsm.something = [screen]
+        fout = open ('log', 'a')
+        fout.write (fsm.input_symbol + ',' + fsm.current_state + '\n')
+        fout.close()
+
+class term (screen.screen):
+    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 ('[', 'ESC', None, 'ELB')
+        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', None, 'INIT') # Selects application keypad.
+        self.state.add_transition ('#', 'ESC', None, 'GRAPHICS_POUND')
+        self.state.add_transition_any ('GRAPHICS_POUND', None, 'INIT')
+        # 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')
+        self.state.add_transition ('m', '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')
+    def process (self, c):
+        self.state.process(c)
+    def test (self):
+        dump = file('dump').read()
+        for c in dump:
+                self.state.process(c)
+        print str(self)
+
+
+    def write (self, ch):
+        '''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.crlr()
+            return
+        if ch == '\n':
+            self.crlf()
+            return
+        if ch == chr(screen.BS):
+            self.cursor_back()
+            self.put(self.cur_r, self.cur_c, ' ')
+            return
+
+        if ch not in string.printable:
+            fout = open ('log', 'a')
+            fout.write ('Nonprint: ' + str(ord(ch)))
+            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()
+