"""Recursively copy a directory but skip undesired files and
directories (CVS, backup files, pyc files, etc)"""

import sys
import os
import shutil

verbose = 1
debug = 0

def isclean(name):
 if name == 'CVS': return 0
 if name == '.cvsignore': return 0
 if name == '.DS_store': return 0
 if name == '.svn': return 0
 if name.endswith('~'): return 0
 if name.endswith('.BAK'): return 0
 if name.endswith('.pyc'): return 0
 if name.endswith('.pyo'): return 0
 if name.endswith('.orig'): return 0
 return 1

def copycleandir(src, dst):
 for cursrc, dirs, files in os.walk(src):
 assert cursrc.startswith(src)
 curdst = dst + cursrc[len(src):]
 if verbose:
 print("mkdir", curdst)
 if not debug:
 if not os.path.exists(curdst):
 os.makedirs(curdst)
 for fn in files:
 if isclean(fn):
 if verbose:
 print("copy", os.path.join(cursrc, fn), os.path.join(curdst, fn))
 if not debug:
 shutil.copy2(os.path.join(cursrc, fn), os.path.join(curdst, fn))
 else:
 if verbose:
 print("skipfile", os.path.join(cursrc, fn))
 for i in range(len(dirs)-1, -1, -1):
 if not isclean(dirs[i]):
 if verbose:
 print("skipdir", os.path.join(cursrc, dirs[i]))
 del dirs[i]

def main():
 if len(sys.argv) != 3:
 sys.stderr.write("Usage: %s srcdir dstdir\n" % sys.argv[0])
 sys.exit(1)
 copycleandir(sys.argv[1], sys.argv[2])

if __name__ == '__main__':
 main()