#!/usr/bin/env python3

import os
import sys
import subprocess

sys.stderr.write('scanning...\n')
sys.stdout.flush()

topnamespace = sys.argv[1]

for d in sys.stdin:
  d = d.strip()
  objs = [d+'/'+fn for fn in os.listdir(d) if fn.endswith('.o')]

  namespace = topnamespace

  dsplit = d.split('/')
  if len(dsplit) >= 3:
    for dpart in dsplit:
      namespace += '_'+dpart.replace('-','_')

  try:
    p = subprocess.Popen(['nm','-pP','--defined-only']+objs,stdout=subprocess.PIPE,stderr=subprocess.STDOUT,universal_newlines=True)
    out,err = p.communicate()
    if err:
      sys.stderr.write('warning: nm error: %s\n' % err)
    elif p.returncode:
      sys.stderr.write('warning: nm failure: %s\n' % p.returncode)
    else:
      for line in out.splitlines():
        line = line.strip()
        if line.endswith(':'):
          obj = line[:-1]
          continue
  
        line = line.split()
        if len(line) < 2: continue
        if line[1].startswith('b'): continue
        if line[1].startswith('d'): continue
        if line[1].startswith('r'): continue
        if line[1].startswith('t'): continue
  
        symbol = line[0]
        if symbol.startswith('__odr_asan.'): symbol = symbol[11:]
        if symbol.startswith('__x86.get_pc_thunk.'): continue

        if symbol == namespace: continue
        if symbol == '_'+namespace: continue
        if symbol.startswith(namespace+'_'): continue
        if symbol.startswith('_'+namespace+'_'): continue

        sys.stderr.write('warning: %s: symbol %s outside namespace\n' % (obj,symbol))
  except Exception as e:
    sys.stderr.write('warning: nm failure: %s' % e)