contrib/debugshell.py

largefiles: update standins only at the 1st commit of "transplant --continue"

Before this patch, "hg transplant --continue" may record incorrect
standins, because largefiles extension always avoid updating standins
while transplanting, even though largefiles in the working directory
may be modified manually at the 1st commit of "hg transplant --continue".

But, on the other hand, updating standins should be avoided at
subsequent commits for efficiency reason.

To update standins only at the 1st commit of "hg transplant
--continue", this patch uses "automatedcommithook", which updates
standins by "lfutil.updatestandinsbymatch()" only at the 1st commit of
resuming.

Even after this patch, "repo._istransplanting = True" is still needed
to avoid some status report while updating largefiles in
"lfcommands.updatelfiles()".

This is reason why this patch omits not "repo._istransplanting = True"
in "overriderebase" but examination of "getattr(repo,
"_istransplanting", False)" in "updatestandinsbymatch".

# debugshell extension
"""a python shell with repo, changelog & manifest objects"""

import sys
import mercurial
import code
from mercurial import cmdutil

cmdtable = {}
command = cmdutil.command(cmdtable)

def pdb(ui, repo, msg, **opts):
    objects = {
        'mercurial': mercurial,
        'repo': repo,
        'cl': repo.changelog,
        'mf': repo.manifest,
    }

    code.interact(msg, local=objects)

def ipdb(ui, repo, msg, **opts):
    import IPython

    cl = repo.changelog
    mf = repo.manifest
    cl, mf # use variables to appease pyflakes

    IPython.embed()

@command('debugshell|dbsh', [])
def debugshell(ui, repo, **opts):
    bannermsg = "loaded repo : %s\n" \
                "using source: %s" % (repo.root,
                                      mercurial.__path__[0])

    pdbmap = {
        'pdb'  : 'code',
        'ipdb' : 'IPython'
    }

    debugger = ui.config("ui", "debugger")
    if not debugger:
        debugger = 'pdb'

    # if IPython doesn't exist, fallback to code.interact
    try:
        __import__(pdbmap[debugger])
    except ImportError:
        ui.warn("%s debugger specified but %s module was not found\n"
                % (debugger, pdbmap[debugger]))
        debugger = 'pdb'

    getattr(sys.modules[__name__], debugger)(ui, repo, bannermsg, **opts)