DbgTerminal.py

   1 #!/usr/bin/python
   2 #shuber, 2008-06-04
   3
   4 __author__ = "shuber"
   5
   6
   7 import gtk
   8 import pty
   9 import string
  10 import time
  11 import threading
  12 import vte
  13
  14 import ClientIOTerminal
  15
  16
  17
  18 class DbgTerminal (vte.Terminal):
  19
  20         isactive = True
  21         lastrow = 0
  22         history = []
  23
  24
  25         def __init__(self, clientCmd):
  26
  27                 vte.Terminal.__init__(self)
  28
  29                 #Start debugger
  30                 self.clientCmd = clientCmd
  31                 self.fork_command( self.getCommand(), self.getArgv())
  32
  33                 #Open pseudo-terminal where to-be-debugged process reads/writes to
  34                 self.client_ptymaster, self.client_ptyslave = pty.openpty()
  35                 self.setPty(self.client_ptyslave)
  36
  37                 #Set up terminal window and initialize debugger
  38                 self.connect("cursor-moved", self.contents_changed)
  39                 self.connect("child-exited", lambda *w: gtk.main_quit())
  40
  41
  42         def contents_changed(self, term):
  43                 c,r = term.get_cursor_position()
  44
  45                 if self.lastrow <= r:
  46                         text = self.get_text_range(self.lastrow,0,r,-1,lambda *w:True)
  47
  48                         #Remove the incomplete line
  49                         if self.getHistoryLen()>0 and (len(self.history[-1])==0 or self.history[-1]!='\n') :
  50                                 del self.history[-1]
  51
  52                         #Get the lines and remove empty lines
  53                         lines = string.split(text, "\n")
  54
  55                         #Remove last empty line...
  56                         if lines[-1] == "":
  57                                 del lines[-1]
  58
  59                         #Add lines to history
  60                         self.history += [l+"\n" for l in lines[:-1]]
  61                         self.history += [lines[-1]]
  62                         self.lastrow = r
  63
  64
  65         def waitForNewline(self):
  66                 r = self.lastrow
  67                 while not self.lastrow > r:
  68                         gtk.main_iteration()
  69
  70         def getHistoryLen(self):
  71                 return len(self.history)
  72
  73         def waitForRx(self, rx, start=None):
  74
  75                 if start == None:
  76                         start = self.getHistoryLen()
  77                 if start < 0:
  78                         start = 0
  79
  80                 while True:
  81                         for no in range(start, self.getHistoryLen()):
  82                                 line = self.history[no]
  83                                 if rx.search(line):
  84                                         return no, line
  85
  86                         start = self.getHistoryLen()
  87                         gtk.main_iteration()
  88
  89
  90         def getCommand(self):
  91                 return self.getArgv()[0];
  92
  93         def getArgv(self):
  94                 raise NotImplementedError()
  95
  96         def setPty(self, pty):
  97                 raise NotImplementedError()
  98
  99         def setRun(self):
 100                 raise NotImplementedError()
 101
 102         def setContinue(self):
 103                 raise NotImplementedError()
 104
 105         def setStepover(self):
 106                 raise NotImplementedError()
 107
 108         def setStepin(self):
 109                 raise NotImplementedError()
 110
 111         def setQuit(self):
 112                 raise NotImplementedError()
 113
 114         def setBreakpoint(self, file, lineno, condition=False):
 115                 raise NotImplementedError()
 116
 117         def delBreakpoint(self, breakpoint):
 118                 raise NotImplementedError()
 119
 120         def getExpression(self, expr):
 121                 raise NotImplementedError()
 122
 123         def waitForActivation(self, his):
 124                 raise NotImplementedError()
 125
 126         def setActive(self, isactive):
 127                 self.isactive = isactive
 128
 129         def isActive(self):
 130                 return self.isactive
 131
 132         def getLastLine(self):
 133                 if len(self.history) == 0:
 134                         return None
 135
 136                 return self.history[-1]
 137
 138         def feed_dbg(self, text):
 139                 self.feed_child(text)
 140
 141
 142
 143
 144
 145
 146 class DbgWindow (gtk.Window):
 147
 148         clientIOWnd = None
 149
 150
 151         def __init__(self, terminal):
 152
 153                 #Set up some members
 154                 self.terminal = terminal
 155
 156                 #Set up GTK stuff
 157                 gtk.Window.__init__(self)
 158                 self.connect("destroy", lambda *w: gtk.main_quit())
 159
 160                 #Set title and add terminal
 161                 self.set_title("Debugger I/O")
 162                 self.terminal.history = []
 163                 self.terminal.history_length = 5
 164                 self.add(self.terminal)
 165
 166                 #Show the window
 167                 self.show_all()
 168
 169         def toggleClientIOWindow(self):
 170                 if not self.clientIOWnd:
 171                         self.clientIOWnd = ClientIOTerminal.ClientIOWindow(self, \
 172                                         self.terminal.client_ptymaster)
 173                 else:
 174                         self.clientIOWnd.destroy()
 175                         self.clientIOWnd = None
 176
 177         def isClientIOWindowExisting(self):
 178                 return self.clientIOWnd != None
 179
 180
 181
 182
 183 def launchDebugger(wnd, term):
 184
 185         wnd.toggleClientIOWindow()
 186
 187         term.setBreakpoint("main.cpp", 15)
 188         term.setRun()
 189         res = term.getExpression("a")
 190         print "Result = ", res
 191
 192         term.setQuit()
 193
 194
 195