"""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.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()