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import sys
class ParseError (Exception):
pass
def error (msg, exit=0):
sys.stderr.write (msg)
if exit:
sys.exit (exit)
def progress (msg):
sys.stderr.write(msg)
def removeQuote (text):
"""Remove quotes from a literal.
"""
if len(text) >= 2 and text[0] == text[len(text)-1] == '"':
text = text[1:-1]
return text
class Macro(object):
def __init__ (self, name):
self.name = name
self.tokens = []
self.vars = {}
class Node(object):
def __init__ (self):
self.children = []
def appendChild (self, childnode):
self.children.append(childnode)
childnode.parent = self
def getChildren (self):
return self.children
class RootNode(Node):
def __init__ (self):
Node.__init__(self)
def dump (self):
chars = ''
for child in self.getChildren():
chars += child.dump()
return chars
class Element(Node):
INDENT = " "
def __init__ (self, name, rid = None):
Node.__init__(self)
self.name = name
self.parent = None
# print "name: " + self.name - stats ...
# The following attributes are copied when 'clone'ed.
self.rid = rid
self.attrs = {}
def dump (self, level = 0):
chars = ''
chars += "\n" + Element.INDENT*level
chars += '<%s'%self.name
if self.rid != None:
self.setAttr("rid", self.rid)
chars += self.__dumpAttrs()
if len(self.children) == 0:
chars += '/>'
else:
chars += '>'
for child in self.getChildren():
chars += child.dump(level+1)
chars += "\n"+Element.INDENT*level
chars += "</%s>"%self.name
return chars
def hasAttr (self, name):
return self.attrs.has_key(name)
def getAttr (self, name):
return self.attrs[name]
def setAttr (self, name, value):
if type(value) == type(0):
value = "%d"%value
self.attrs[name] = removeQuote(value)
# print "attr: " + self.name + "." + name - stats ...
return
def clone (self, elem):
keys = elem.attrs.keys()
for key in keys:
self.attrs[key] = elem.attrs[key]
self.rid = elem.rid
def __dumpAttrs (self):
text = ''
keys = self.attrs.keys()
keys.sort()
for key in keys:
value = self.attrs[key]
text += ' %s="%s"'%(key, value)
return text
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