Source code for galaxy.util.tool_shed.xml_util

import io
import logging
import os
import tempfile

from galaxy.util import (
    etree,
    parse_xml as galaxy_parse_xml,
    unicodify,
    xml_to_string,
)

log = logging.getLogger(__name__)


[docs]def create_and_write_tmp_file(elem): tmp_str = xml_to_string(elem, pretty=True) with tempfile.NamedTemporaryFile(prefix="tmp-toolshed-cawrf", delete=False) as fh: tmp_filename = fh.name with io.open(tmp_filename, mode='w', encoding='utf-8') as fh: fh.write(tmp_str) return tmp_filename
[docs]def create_element(tag, attributes=None, sub_elements=None): """ Create a new element whose tag is the value of the received tag, and whose attributes are all key / value pairs in the received attributes and sub_elements. """ if tag: elem = etree.Element(tag) if attributes: # The received attributes is an odict to preserve ordering. for k, v in attributes.items(): elem.set(k, v) if sub_elements: # The received attributes is an odict. These handle information that tends to be # long text including paragraphs (e.g., description and long_description. for k, v in sub_elements.items(): # Don't include fields that are blank. if v: if k == 'packages': # The received sub_elements is an odict whose key is 'packages' and whose # value is a list of ( name, version ) tuples. for v_tuple in v: sub_elem = etree.SubElement(elem, 'package') sub_elem_name, sub_elem_version = v_tuple sub_elem.set('name', sub_elem_name) sub_elem.set('version', sub_elem_version) elif isinstance(v, list): sub_elem = etree.SubElement(elem, k) # If v is a list, then it must be a list of tuples where the first # item is the tag and the second item is the text value. for v_tuple in v: if len(v_tuple) == 2: v_tag = v_tuple[0] v_text = v_tuple[1] # Don't include fields that are blank. if v_text: v_elem = etree.SubElement(sub_elem, v_tag) v_elem.text = v_text else: sub_elem = etree.SubElement(elem, k) sub_elem.text = v return elem return None
[docs]def parse_xml(file_name, check_exists=True): """Returns a parsed xml tree with comments intact.""" error_message = '' if check_exists and not os.path.exists(file_name): return None, "File does not exist %s" % str(file_name) try: tree = galaxy_parse_xml(file_name, remove_comments=False, strip_whitespace=False) except (IOError, OSError): raise except Exception as e: error_message = "Exception attempting to parse %s: %s" % (str(file_name), unicodify(e)) log.exception(error_message) return None, error_message return tree, error_message