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#!/usr/bin/env python
############################################################################
##
## Copyright (C) 2006-2008 University of Utah. All rights reserved.
##
## This file is part of VisTrails.
##
## This file may be used under the terms of the GNU General Public
## License version 2.0 as published by the Free Software Foundation
## and appearing in the file LICENSE.GPL included in the packaging of
## this file. Please review the following to ensure GNU General Public
## Licensing requirements will be met:
## http://www.opensource.org/licenses/gpl-license.php
##
## If you are unsure which license is appropriate for your use (for
## instance, you are interested in developing a commercial derivative
## of VisTrails), please contact us at contact@vistrails.org.
##
## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
##
############################################################################
from core.system import get_elementtree_library
ElementTree = get_elementtree_library()
from cdat_domain import CDATAction, CDATModule, CDATOption, CDATPort
class XMLNode:
def __init__(self):
pass
def has_attribute(self, node, attr):
return node.hasAttribute(attr)
def get_attribute(self, node, attr):
try:
attribute = node.attributes.get(attr)
if attribute is not None:
return attribute.value
except KeyError:
pass
return None
@staticmethod
def convert_from_str(value, type):
def bool_conv(x):
s = str(x).upper()
if s == 'TRUE':
return True
if s == 'FALSE':
return False
if value is not None:
if type == 'str':
return str(value)
elif value.strip() != '':
if type == 'long':
return long(value)
elif type == 'float':
return float(value)
elif type == 'int':
return int(value)
elif type == 'bool':
return bool_conv(value)
elif type == 'date':
return date(*strptime(value, '%Y-%m-%d')[0:3])
elif type == 'datetime':
return datetime(*strptime(value, '%Y-%m-%d %H:%M:%S')[0:6])
return None
class CDATOptionNode(XMLNode):
@staticmethod
def from_xml(node):
tag = node.tag
data = node.get('default', None)
default = CDATOptionNode.convert_from_str(data, 'str')
data = node.get('doc', None)
doc = CDATOptionNode.convert_from_str(data, 'str')
data = node.get('instance', None)
instance = CDATOptionNode.convert_from_str(data, 'str')
return CDATOption(tag=tag, default=default,doc=doc,instance=instance)
class CDATPortNode(XMLNode):
"""Represents Input or Output nodes"""
@staticmethod
def from_xml(node):
tag = node.tag
data = node.get('doc', None)
doc = CDATPortNode.convert_from_str(data, 'str')
data = node.get('instance', None)
instance = CDATPortNode.convert_from_str(data, 'str')
data = node.get('position', None)
position = CDATPortNode.convert_from_str(data, 'int')
data = node.get('required', None)
required = CDATPortNode.convert_from_str(data, 'bool')
return CDATPort(tag=tag, doc=doc, instance=instance,
position=position, required=required)
class CDATActionNode(XMLNode):
@staticmethod
def from_xml(node):
data = node.get('name', None)
name = CDATActionNode.convert_from_str(data,'str')
data = node.get('type', None)
type = CDATActionNode.convert_from_str(data,'str')
options = []
inputs = []
outputs = []
#read children
for child in node.getchildren():
if child.tag == 'options':
for optnode in child.getchildren():
option = CDATOptionNode.from_xml(optnode)
options.append(option)
elif child.tag == 'input':
for inode in child.getchildren():
port = CDATPortNode.from_xml(inode)
inputs.insert(port._position,port)
elif child.tag == 'output':
for onode in child.getchildren():
port = CDATPortNode.from_xml(onode)
outputs.insert(port._position,port)
elif child.tag == 'doc':
doc = child.text
return CDATAction(name=name, type=type, options=options, inputs=inputs,
outputs=outputs, doc=doc)
class CDATModuleNode(XMLNode):
@staticmethod
def from_xml(node):
data = node.get('author',None)
author = CDATModuleNode.convert_from_str(data,'str')
data = node.get('programminglanguage', None)
language = CDATModuleNode.convert_from_str(data,'str')
data = node.get('type', None)
type = CDATModuleNode.convert_from_str(data, 'str')
data = node.get('url', None)
url = CDATModuleNode.convert_from_str(data, 'str')
data = node.get('version', None)
version = CDATModuleNode.convert_from_str(data, 'str')
data = node.get('codepath', None)
codepath = CDATModuleNode.convert_from_str(data, 'str')
actions = []
#read actions
for child in node.getchildren():
if child.tag == 'action':
action = CDATActionNode.from_xml(child)
actions.append(action)
return CDATModule(author=author,
language=language,
type=type,
url=url,
codepath=codepath,
version=version,
actions=actions)
def parse_cdat_xml_file(filename):
""" parse_cdat_xml_file(filename:str) -> CDATDiagnostic
"""
tree = ElementTree.parse(filename)
module = CDATModuleNode.from_xml(tree.getroot())
return module
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