patch sphinx.ext.intersphinx output tweaking the main function to using almost csv compatible tab separators instead of columns adjusted by spaces

inspect_objects.py

#!./bin/python
# -*- coding: utf-8 -*-

"""
    inspect_objects
    based on and requiring sphinx.ext.intersphinx
    ~~~~~~~~~~~~~~~~~~~~~~

    List links to objects documented in as build Sphinx documentation.

    Usage: ./bin/python inspect_objects.py _build/html/objects.inv > objects_inventory.csv

    This works as follows:

    * Each Sphinx HTML build creates a file named "objects.inv" that contains a
      mapping from object names to URIs relative to the HTML set's root.
    
    * This is a modified call of the main function of intersphinx to export the 
      List of object as pure tab delimited file instead of the aligned text with 
      justified spaces. It is much better suitable for postproceessing than the 
      regular output aiming at programmers for a quick look during debugging.

    * By default, the mapping file is assumed to be at the same location as the
      rest of the documentation; however, the location of the mapping file can
      also be specified individually, e.g. if the docs should be buildable
      without Internet access.

    :copyright: Copyright of the source sphinx.ext.intersphinx 2007-2018 by the Sphinx team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

from __future__ import print_function

import functools
import posixpath
import sys
import time
import warnings
from os import path

from docutils import nodes
from docutils.utils import relative_path
from six import PY3, iteritems, string_types
from six.moves.urllib.parse import urlsplit, urlunsplit

import sphinx
from sphinx.builders.html import INVENTORY_FILENAME
from sphinx.deprecation import RemovedInSphinx20Warning
from sphinx.locale import _, __
from sphinx.util import requests, logging
from sphinx.util.inventory import InventoryFile

from sphinx.ext.intersphinx import *

if False:
    # For type annotation
    from typing import Any, Dict, IO, List, Tuple, Union  # NOQA
    from sphinx.application import Sphinx  # NOQA
    from sphinx.config import Config  # NOQA
    from sphinx.environment import BuildEnvironment  # NOQA

    if PY3:
        unicode = str

    Inventory = Dict[unicode, Dict[unicode, Tuple[unicode, unicode, unicode, unicode]]]

logger = logging.getLogger(__name__)


def inspect_main_csv(argv):
    # type: (List[unicode]) -> None
    """Debug functionality to print out an inventory"""
    if len(argv) < 1:
        print("Print out an inventory file.\n"
              "Error: must specify local path or URL to an inventory file.",
              file=sys.stderr)
        sys.exit(1)

    class MockConfig(object):
        intersphinx_timeout = None  # type: int
        tls_verify = False

    class MockApp(object):
        srcdir = ''
        config = MockConfig()

        def warn(self, msg):
            # type: (unicode) -> None
            print(msg, file=sys.stderr)

    try:
        filename = argv[0]
        invdata = fetch_inventory(MockApp(), '', filename)  # type: ignore
        for key in sorted(invdata or {}):
            print(key)
            for entry, einfo in sorted(invdata[key].items()):
                print('\t%s\t%s\t%s' % (entry,
                                        einfo[3] != '-' and '%s' % einfo[3] or '',
                                        einfo[2]))
    except ValueError as exc:
        print(exc.args[0] % exc.args[1:])
    except Exception as exc:
        print('Unknown error: %r' % exc)


if __name__ == '__main__':
    import logging  # type: ignore
    logging.basicConfig()  # type: ignore

    inspect_main_csv(argv=sys.argv[1:])  # type: ignore

Initial commit of unchanged file from https://github.com/sphinx-doc/sphinx/blob/master/sphinx/ext/intersphinx.py to be changed at https://github.com/sphinx-doc/sphinx/blob/36d628929ef45c2e6225bfb5470080be77056629/sphinx/ext/intersphinx.py#L407

Changed the print output to create pure tab delimited output. (Compare to Gist revision 1 original version) https://gist.github.com/acsr/fb7b5cf97627f70876ceeae031cd37f1/revisions

Replaced the patched version of https://github.com/sphinx-doc/sphinx/blob/master/sphinx/ext/intersphinx.py by the inspect_objects.py script calling the regular module and tweak the main function during runtime.