scripts: get_maintainers: improve display of areas table

import shlex

import subprocess

import sys

from tabulate import tabulate

from yaml import load, YAMLError

try:

    def _areas_cmd(self, args):

        # 'areas' subcommand implementation

        def multiline(items):

            # Each item on its own line, empty string if none

            return "\n".join(items) if items else ""

        table = []

        for area in self.areas.values():

            maintainers = multiline(area.maintainers)

            collaborators = multiline(area.collaborators)

            if args.maintainer:

                if args.maintainer in area.maintainers:

                    print("{:25}\t{}".format(area.name, ",".join(area.maintainers)))

                    table.append([

                        area.name,

                        maintainers,

                        collaborators

                    ])

            else:

                print("{:25}\t{}".format(area.name, ",".join(area.maintainers)))

                table.append([

                    area.name,

                    maintainers,

                    collaborators

                ])

        if table:

            # Use plain tablefmt for better multi-line cell support

            print(tabulate(

                table,

                headers=["Area", "Maintainers", "Collaborators"],

                tablefmt="grid",

                stralign="left",

                disable_numparse=True

            ))

    def _count_cmd(self, args):

        # 'count' subcommand implementation