91 lines
2.8 KiB
Python
91 lines
2.8 KiB
Python
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#!/usr/bin/env python
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import os, re, sys
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from subprocess import Popen, PIPE, STDOUT
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_can_debug = os.system('which gdb > /dev/null 2>&1') == 0
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def can_debug():
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global _can_debug
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return _can_debug
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class Debugger(object):
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frame_begin_re = re.compile('^\032\032frame-begin ([^ ]+) ([^ ]+)$')
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source_re = re.compile('^\032\032source (.+)$')
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def __init__(self, cmd='gdb', args=[]):
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self.pipe = None
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self.cmd = cmd
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self.args = [cmd, '--annotate=3']
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self.args.extend(args)
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self.start()
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#gdb state
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self.prompt = None
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self.path = None
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self.line = None
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self.char = None
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self.middle = None
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self.addr = None
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self.breaks = []
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def start(self):
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assert self.pipe is None
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cmd = ' '.join(self.args)
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self.pipe = Popen(cmd, shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT)
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def stop(self):
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self.pipe.stdin.close()
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self.pipe.stdout.close()
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self.pipe = None
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def restart(self):
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self.stop()
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self.start()
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def _readline(self):
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line = self.pipe.stdout.readline()
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if line:
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return line[:-1]
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else:
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return None
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def _assertline(self, s):
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l = self._readline()
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assert l == s, repr(l)
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def run(self):
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while True:
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line = self._readline()
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if line is None:
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break
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if line.startswith('\032\032'):
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if line == '\032\032starting':
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pass
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elif line == '\032\032stopped':
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pass
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elif line.startswith('\032\032frame-begin'):
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m = self.frame_begin_re.match(line)
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assert m
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elif line.startswith('\032\032source'):
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m = self.source_re.match(line)
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assert m
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fields = m.group(1).split(':')
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self.path = fields[0]
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self.line = int(fields[1])
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self.char = int(fields[2])
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self.middle = fields[3]
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self.addr = fields[4]
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print "SOURCE %r, line %d (%s)" % (self.path, self.line, self.addr)
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elif line == '\032\032pre-prompt':
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self.prompt = self._readline()
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print 'PROMPT: %r' % self.prompt
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self._assertline('\032\032prompt')
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self.pipe.stdin.write(sys.stdin.readline())
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self._assertline('')
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self._assertline('\032\032post-prompt')
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else:
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print 'CMD %r' % line
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elif line:
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print line
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if __name__ == "__main__":
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args = sys.argv[1:]
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d = Debugger(args=args)
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d.run()
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