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#!/usr/bin/python
# -*- coding: utf-8 -*-
#################################################################################
# POLYMERAZE XML UTILITIES
#################################################################################
# File: xml.py
#
# Utilities to deal with xml nodes.
#
# Copyright:
# (c) 2005 - 2008 Gunnar Wrobel
# (c) 2009 Sebastian Pipping
# (c) 2009 Christian Groschupp
# Distributed under the terms of the GNU General Public License v2
#
# Author(s):
# Gunnar Wrobel <wrobel@gentoo.org>
# Sebastian Pipping <sebastian@pipping.org>
# Christian Groschupp <christian@groschupp.org>
#
'''Utility functions to deal with xml nodes. '''
__version__ = '$Id: utils.py 236 2006-09-05 20:39:37Z wrobel $'
#===============================================================================
#
# Dependencies
#
#-------------------------------------------------------------------------------
import types, re, os
from layman.debug import OUT
#===============================================================================
#
# Helper functions
#
#-------------------------------------------------------------------------------
def ensure_unicode(obj, encoding='utf-8'):
if isinstance(obj, basestring):
if not isinstance(obj, unicode):
obj = unicode(obj, encoding)
return obj
# From <http://effbot.org/zone/element-lib.htm>
# BEGIN
def indent(elem, level=0):
i = "\n" + level*" "
if len(elem):
if not elem.text or not elem.text.strip():
elem.text = i + " "
if not elem.tail or not elem.tail.strip():
elem.tail = i
for elem in elem:
indent(elem, level+1)
if not elem.tail or not elem.tail.strip():
elem.tail = i
else:
if level and (not elem.tail or not elem.tail.strip()):
elem.tail = i
# END
def path(path_elements):
'''
Concatenate a path from several elements.
>>> path([])
''
>>> path(['a'])
'a'
>>> path(['a','b'])
'a/b'
>>> path(['a/','b'])
'a/b'
>>> path(['/a/','b'])
'/a/b'
>>> path(['/a/','b/'])
'/a/b'
>>> path(['/a/','b/'])
'/a/b'
>>> path(['/a/','/b/'])
'/a/b'
>>> path(['/a/','/b','c/'])
'/a/b/c'
'''
pathname = ''
if type(path_elements) in types.StringTypes:
path_elements = [path_elements]
# Concatenate elements and seperate with /
for i in path_elements:
pathname += i + '/'
# Replace multiple consecutive slashes
pathname = re.compile('/+').sub('/', pathname)
# Remove the final / if there is one
if pathname and pathname[-1] == '/':
pathname = pathname[:-1]
return pathname
def delete_empty_directory(mdir):
if os.path.exists(mdir) and not os.listdir(mdir):
# Check for sufficient privileges
if os.access(mdir, os.W_OK):
OUT.info('Deleting _empty_ directory "%s"' % mdir, 2)
try:
os.rmdir(mdir)
except OSError, error:
OUT.warn(str(error))
else:
OUT.warn('Insufficient permissions to delete _empty_ folder "%s".' % mdir)
import getpass
if getpass.getuser() != 'root':
OUT.warn('Hint: You are not root.')
#===============================================================================
#
# Testing
#
#-------------------------------------------------------------------------------
if __name__ == '__main__':
import doctest, sys
doctest.testmod(sys.modules[__name__])
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