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#!/usr/bin/env python
# Copyright (C) 2003 Helvetix Victorinox, a pseudonym, <helvetix@gimp.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# -*- mode: python py-indent-offset: 2; -*-
#
# Look at object files and figure things about the namespaces they
# require and provide.
#
# It is very useful when working on libraries where you really should
# be hygenic about the namespace you occupy and not clutter it with
# conflicting and extraneous names.
#
import os
import re
import sys
import string
import pprint
pp = pprint.PrettyPrinter(indent=2)
#
# for each object file, we keep two lists: exported names and imported names.
#
# nm -A [files...]
#
class nmx:
def __init__(self, objfile=None):
self.objects = dict()
self.filename = None
if objfile != None:
self.update(objfile)
pass
return (None)
def split_(self, line):
tmp=string.split(line)[0:2]
tmp.reverse()
return tmp
def update(self, objfile):
self.filename = objfile
(sysname, nodename, release, version, machine) = os.uname()
if sysname == "Linux":
fp = os.popen("nm -P " + objfile, "r")
symbols = map(self.split_, fp.readlines())
elif sysname == "SunOS":
fp = os.popen("nm -p " + objfile, "r")
symbols = map(lambda l: string.split(l[12:]), fp.readlines())
pass
elif sysname == "IRIX":
fp = os.popen("nm -B " + objfile, "r")
symbols = map(lambda l: string.split(l[8:]), fp.readlines())
pass
object = objfile
for (type, symbol) in symbols:
if not self.objects.has_key(object):
self.objects.update({ object : dict({ "exports" : dict(), "imports" : dict() }) })
pass
if type == "U":
self.objects[object]["imports"].update({ symbol : dict() })
elif type in ["C", "D", "T"]:
self.objects[object]["exports"].update({ symbol : dict() })
pass
pass
fp.close()
return (None)
def exports(self, name):
for o in self.objects.keys():
if self.objects[o]["exports"].has_key(name):
return (1)
pass
return (0)
def exports_re(self, name):
regex = re.compile(name)
for o in self.objects.keys():
for p in self.objects[o]["exports"].keys():
if regex.match(p):
return (p)
pass
pass
return (None)
pass
def nm(nmfile):
objects = dict()
fp = open(nmfile, "r")
for line in fp.readlines():
(object, type, symbol) = string.split(line)
object = object[:string.rfind(object, ':')]
if not objects.has_key(object):
objects.update({ object : dict({"exports" : dict(), "imports" : dict()})})
pass
if type == "U":
objects[object]["imports"].update({symbol : dict()})
elif type in ["C", "D", "T"]:
objects[object]["exports"].update({symbol : dict()})
pass
fp.close()
return (objects)
def resolve_(objects, obj):
for object in objects.keys():
if object != obj:
for imported in objects[obj]["imports"].keys():
if objects[object]["exports"].has_key(imported):
objects[obj]["imports"][imported] = object
pass
pass
for exported in objects[obj]["exports"].keys():
if objects[object]["imports"].has_key(exported):
objects[obj]["exports"][exported] = object
pass
pass
pass
pass
return
def resolve(objects):
for object in objects.keys():
resolve_(objects, object)
return (objects)
def report_unreferenced(objects):
for object in objects.keys():
for symbol in objects[object]["exports"].keys():
if len(objects[object]["exports"][symbol]) == 0:
print object + ":" + symbol, "unreferenced"
pass
pass
pass
return
def report_referenced(objects):
for object in objects.keys():
for symbol in objects[object]["imports"].keys():
if len(objects[object]["imports"][symbol]) > 0:
print objects[object]["imports"][symbol] + ":" + symbol, object, "referenced"
pass
pass
pass
return
def make_depend(objects):
for object in objects.keys():
for symbol in objects[object]["imports"].keys():
if len(objects[object]["imports"][symbol]) > 0:
print object + ":" + symbol, "referenced", objects[object]["imports"][symbol]
pass
pass
pass
return
def main(argv):
ns = nm(argv[0])
resolve(ns)
report_referenced(ns)
report_unreferenced(ns)
pass
if __name__ == "__main__":
main(sys.argv[1:])
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