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# -*- coding: UTF-8 -*-
# Copyright 2004-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
from xml.dom import NotFoundErr
class DomRewriter:
"""
The old DOM rewriter is still around for index based stuff. It can
be used for all the complex stuff but portage needed features should
be in StreamRewriterBase subclasses as they are much faster.
"""
def __init__(self, modifyElems = None, attributes = None , values=None, index=None):
self.modifyElems = modifyElems
self.attributes = attributes
self.values = values
self.index = index
def delete_elements(self, document, **kwargs):
if not self.modifyElems:
return
tomodify = []
for tag in self.modifyElems:
matches = document.getElementsByTagName(tag)
if matches:
if self.index == None:
for match in matches:
tomodify.append(match)
else:
tomodify.append(matches[self.index])
for elem in tomodify:
for i,attr in enumerate(self.attributes):
if self.values:
elem.setAttribute(attr, self.values[i])
else:
try:
elem.removeAttribute(attr)
except DomRewriter.NotFoundErr:
continue
def add_gentoo_classpath(self,document,**kwargs):
if 'classpath' not in kwargs or not kwargs['classpath']:
return
cp = document.createElement("classpath")
cp.setAttribute("path", kwargs['classpath'])
last_parent = None
# Add our classpath element to every node already containing a classpath element.
for match in document.getElementsByTagName("classpath"):
if last_parent != match.parentNode:
match.parentNode.appendChild(cp.cloneNode(True))
last_parent = match.parentNode
# Add our classpath element to every javac node we missed earlier.
for match in document.getElementsByTagName("javac") + document.getElementsByTagName("xjavac"):
if not match.getElementsByTagName("classpath"):
match.appendChild(cp.cloneNode(True))
def process(self,in_stream,callback=None,*args,**kwargs):
from xml.dom import minidom
self.document = minidom.parseString(in_stream);
if callback:
callback(self.document,*args,**kwargs)
def write(self,stream):
stream.write(self.document.toxml('utf-8').decode('utf-8'))
# vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap:
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