convertxml

#! /usr/bin/env python
"""
    Copyright (C) 2015  Alexander Crosby

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
import sys
import os
import argparse
try:
    import xml.etree.cElementTree as ET
except:
    import xml.etree.ElementTree as ET

parser = argparse.ArgumentParser()
parser.add_argument("-t", "--to", help="Specify the format for conversion to.",
                    choices=["json", "prettyjson", "yaml", "prettyyaml"],
                    default="prettyyaml")
parser.add_argument("-f", "--file", help="Specify the input xml, if omitted will search for the latest in a subdirectory named by version number.",
                    )
args = parser.parse_args()
outformat = args.to
if args.file is None:
    for i in range(29, 100, 1):
        current_path1 = os.path.join(os.path.split(os.path.abspath(__file__))[0], str(i), "cf-standard-name-table.xml")
        if os.path.exists(current_path1):
            current_path = current_path1
        else:
            break
    inputxml = current_path
else:
    inputxml = args.file


def to_pyobjects(inputxml):
    tree = ET.parse(inputxml)
    entrylist = tree.findall("entry")
    entrydicts = {}
    aliasdicts = {}
    aliaslist = tree.findall("alias")
    for i, entry in enumerate(entrylist):
        entrydict = {}  # {"standard_name": entry.attrib["id"]}
        for child in entry.getchildren():
            entrydict[child.tag] = child.text
        entrydicts[entry.attrib["id"]] = entrydict
    for i, entry in enumerate(aliaslist):
        # entrydict = {}  # {"standard_name": entry.attrib["id"]}
        for child in entry.getchildren():
            # entrydict[child.tag] = child.text
            standard_name = child.text
        aliasdicts[entry.attrib["id"]] = standard_name
        entrydicts[standard_name]["alias"] = entry.attrib["id"]
    return {"entry": entrydicts, "alias": aliasdicts}


data = to_pyobjects(inputxml)

if "json" in outformat:
    try:
        import simplejson as json
    except:
        import json
        Warning("simplejson module not found, falling back to json")
    if "pretty" in outformat:
        try:
            out = json.dumps(data, sort_keys=True, indent=4 * ' ')
        except:
            out = json.dumps(data, sort_keys=True, indent=4)
    else:
        out = json.dumps(data)
if "yaml" in outformat:
    import yaml
    if "pretty" in outformat:
        out = yaml.dump(data, default_flow_style=False, width=80, indent=4)
    else:
        out = yaml.dump(data)

print out