mercurial/revlogutils/debug.py

debugindex: move the logic into its own module

Adding more information will significantly increase the amount of code. So we
move the code into its own module before making it more complex.

# revlogutils/debug.py - utility used for revlog debuging
#
# Copyright 2005-2007 Olivia Mackall <[e-mail]>
# Copyright 2022 Octobus <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from .. import (
    node as nodemod,
)


def debug_index(
    ui,
    repo,
    formatter,
    revlog,
    full_node,
):
    """display index data for a revlog"""
    if full_node:
        hexfn = nodemod.hex
    else:
        hexfn = nodemod.short

    idlen = 12
    for i in revlog:
        idlen = len(hexfn(revlog.node(i)))
        break

    fm = formatter

    fm.plain(
        b'   rev linkrev %s %s p2\n'
        % (b'nodeid'.ljust(idlen), b'p1'.ljust(idlen))
    )

    for rev in revlog:
        node = revlog.node(rev)
        parents = revlog.parents(node)

        fm.startitem()
        fm.write(b'rev', b'%6d ', rev)
        fm.write(b'linkrev', b'%7d ', revlog.linkrev(rev))
        fm.write(b'node', b'%s ', hexfn(node))
        fm.write(b'p1', b'%s ', hexfn(parents[0]))
        fm.write(b'p2', b'%s', hexfn(parents[1]))
        fm.plain(b'\n')

    fm.end()