GdbTerminal.py

   1 #!/usr/bin/python
   2 #shuber, 2008-06-04
   3
   4 __author__ = "shuber"
   5
   6
   7 import gtk
   8 import os
   9 import re
  10 import string
  11 import sys
  12 import time
  13
  14 import DbgTerminal
  15
  16
  17 class GdbTerminal (DbgTerminal.DbgTerminal):
  18
  19
  20         def __init__(self, clientCmd):
  21                 DbgTerminal.DbgTerminal.__init__(self, clientCmd)
  22
  23         def getArgv(self):
  24                 return ["gdb", "--fullname", string.split(self.clientCmd)[0]]
  25
  26         def setRun(self):
  27                 argv = string.join(string.split(self.clientCmd)[1:])
  28                 self.feed_child("run " + argv + "\n")
  29
  30         def setContinue(self):
  31                 self.feed_child("cont\n");
  32
  33         def setStepover(self):
  34                 self.feed_child("next\n");
  35
  36         def setStepin(self):
  37                 self.feed_child("step\n");
  38
  39         def setQuit(self):
  40                 self.feed_child("quit\n")
  41                 self.waitForNewline()
  42                 self.feed_child("y\n");
  43
  44         def setPty(self, pty):
  45                 ttyname = os.ttyname(pty)
  46                 self.__getAnswerFromCmd("set inferior-tty %s\n" % (ttyname,))
  47
  48         def setBreakpoint(self, file, lineno, condition=None):
  49                 his = self.getHistoryLen()
  50                 if condition==None:
  51                         self.feed_child("break %s:%s\n" % (file, str(lineno)))
  52                 else:
  53                         self.feed_child("break %s:%s if %s\n" % \
  54                                         (file, str(lineno), condition))
  55
  56                 rx = "^Breakpoint |^No |^\(gdb\) "
  57                 his, response = self.waitForRx(rx, his)
  58
  59                 answer = None
  60
  61                 if response[0:10] == "Breakpoint":
  62                         answer = string.split(response)[1].strip()
  63
  64                 #Wants an answer: "No"
  65                 if response[0:14] == "No source file":
  66                         self.feed_child("n\n");
  67
  68                 #Wait again for (gdb)...
  69                 self.waitForPrompt(his)
  70
  71                 return answer
  72
  73
  74         def delBreakpoint(self, breakpoint):
  75                 self.__getAnswerFromCmd("del breakpoint %s\n" % (breakpoint,))
  76
  77
  78         def getBreakpoints(self):
  79                 bplines = self.__getAnswerFromCmd("info breakpoints\n")
  80
  81                 rxbp = re.compile("^\d+\s+breakpoint")
  82                 rxpos = re.compile("^.* at \S+:\d+$")
  83                 rxcond = re.compile("^\tstop only if")
  84
  85                 bpnts = []
  86                 i = 1
  87
  88                 #Parse the resulting lines
  89                 while i<len(bplines):
  90                         line = bplines[i]
  91
  92                         if not rxbp.search(line):
  93                                 i += 1
  94                                 continue
  95
  96                         #Get number of breakpoint
  97                         no = string.split(line)[0]
  98
  99                         #This line does not contain the file!
 100                         if not rxpos.search(line):
 101                                 continue
 102
 103                         pos = string.split(line)[-1]
 104                         [file,lineno] = string.split(pos,":")
 105                         cond = None
 106
 107                         if i+1<len(bplines) and rxcond.search(bplines[i+1]):
 108                                 i +=1
 109                                 line = bplines[i]
 110                                 cond = string.join(string.split(line," if ")[1:], " if ")
 111                                 cond = cond.strip()
 112
 113                         bpnts += [[no, file, lineno, cond]]
 114                         i += 1
 115
 116                 return bpnts
 117
 118
 119
 120         def getExpression(self, expr):
 121                 answer = self.__getAnswerFromCmd("print " + expr + "\n")
 122                 answer = answer[-1]
 123
 124                 if len(string.split(answer, "=")) == 1:
 125                         return answer.strip()
 126
 127                 split = string.split(answer, "=")
 128                 return string.join(split[1:], "=").strip()
 129
 130
 131         def listCodeSnippet(self):
 132                 answ = self.__getAnswerFromCmd("list\n")
 133                 return string.join(answ, "\n")
 134
 135         def getBacktrace(self):
 136                 answ = self.__getAnswerFromCmd("bt\n")
 137                 return string.join(answ, "\n")
 138
 139         def waitForPrompt(self, his):
 140                 rx = "^\(gdb\)"
 141                 return self.waitForRx(rx,his)
 142
 143         def __getAnswerFromCmd(self, cmd):
 144                 starthis = self.getHistoryLen()
 145                 self.feed_child(cmd)
 146                 endhis, response = self.waitForPrompt(starthis)
 147
 148                 return self.history[starthis:endhis]
 149
 150
 151         def testForActivity(self, his):
 152                 """Test whether debugger got active again"""
 153
 154                 line = self.history[his]
 155
 156                 if string.find(line, "\x1a\x1a") == 0:
 157                         tuples = string.split(line[2:], ":")
 158                         tuples[1] = int(tuples[1])
 159                         return "break", [tuples[0], int(tuples[1])]
 160
 161                 if string.find(line, "Program exited") == 0:
 162                         code = string.split(line)[-1]
 163
 164                         codeno = 0
 165
 166                         #Parse the octal number
 167                         if code[0] == "O":
 168                                 code = code[1:-1]
 169                                 for c in code:
 170                                         codeno = codeno*8 + int(c)
 171
 172                         return "exited", codeno
 173
 174                 return None
 175
 176
 177         def testForInactivity(self, his):
 178                 """Test whether debugger got inactive"""
 179                 line = self.history[his]
 180
 181                 if string.find(line, "Starting program:") == 0:
 182                         prog = string.join( string.split(line)[1:])
 183                         return "started", prog
 184
 185                 if string.find(line, "Continuing.") == 0:
 186                         return "continued", None
 187
 188                 if string.find(line, "\x1a\x1a") == 0:
 189                         rxcont = re.compile("^\(gdb\)\s+(cont|step|next|stepi|nexti)")
 190
 191                         if rxcont.search(self.history[his-1]):
 192                                 return "stepped", None
 193
 194                 return None
 195
 196
 197
 198
 199
 200
 201
 202
 203 if __name__ == "__main__":
 204
 205
 206         dbgterm = GdbTerminal(string.join(sys.argv[1:]))
 207         dbgwnd = DbgTerminal.DbgWindow(dbgterm)
 208
 209         gtk.main()
 210
 211
 212
 213