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#!/usr/bin/env python
__author__ = "Jan Pokorny <jpokorny at redhat dot com>"
__license__ = "GPLv2"
from sys import stdin, stderr
import re
import textwrap
DEF_IDENT = '[A-Za-z_][A-Za-z0-9_]*'
DEF_UNKNOWN = '[?]{2}'
DEF_HEX = '0x[0-9A-Fa-f]+'
DEF_NUM = '[+-]?(?:[0-9]+(?:[.][0-9]*)?|[.][0-9]+)(?:[eE][0-9]+)?'
DEF_MSG = '[<][ A-Za-z0-9_]+[>]'
DEF_STR = '["][ A-Za-z0-9_]*["]'
DEF_PATH = '[A-Za-z0-9._/-]+'
RE_BT = re.compile(
'(?P<init>^\#[0-9]+\s+)'
'(?:(?P<hex>%(DEF_HEX)s) in )?'
'(?P<where>%(DEF_IDENT)s(?:(?: |::)%(DEF_IDENT)s)*|(?P<unknown>%(DEF_UNKNOWN)s))'
' (?P<args>[(](?:(?<=[( ])%(DEF_IDENT)s=(?:%(DEF_IDENT)s|%(DEF_MSG)s|%(DEF_HEX)s|%(DEF_NUM)s|%(DEF_STR)s)(?:, )?)*[)])'
'(?(unknown)| at (?P<path>%(DEF_PATH)s):(?P<line>[1-9][0-9]*))'
% locals())
class BtLineError(Exception):
pass
class BtLine(object):
def __init__(self, line, space=None):
self._space = space
self._line = line
self._found = RE_BT.search(self._line)
if self._found:
for k, v in self._found.groupdict().iteritems():
#print "\t{0}: {1}".format(k, v)
setattr(self, k, v)
else:
raise BtLineError
def __str__(self):
if self._found:
space = '\n' + self.get_space()
args = textwrap.wrap(self.args, subsequent_indent=self._space)
res = self.init + self.where
res += (args[0] == '()' and '()' or space + '\n'.join(args))
if not self.unknown:
res += space + 'at ' + self.path + ':' + self.line
return res
def get_space(self):
if not self._space:
self._space = ' ' * len(self.init)
return self._space
def main():
space = None
line = '__dummy__'
while line:
line = stdin.readline()
try:
btline = BtLine(line, space)
except BtLineError:
space = None
#print >>stderr, "bad line:", line
print line
else:
print str(btline) + '\n'
space = space or btline.get_space()
if __name__ == '__main__':
main()
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