view contrib/debugshell.py @ 24360:f554f89a2038

tests: introduce 'seq.py' as a portable replacement for 'seq'

OS X 10.6.8 doesn't have it, while 10.10 does.  I'm not sure when it was added.
It may be missing from other platforms as well.

This currently doesn't handle the string manipulation options (-f, -s and -w in
MinGW anyway), since there is currently no need for it.  Since xrange defaults
to starting at 0 instead of 1, and treats the end as exclusive instead of
inclusive, the args need to be extracted instead of doing:

        xrange(*[int(a) for a in sys.argv[1:]])

Therefore, the step might as well be added, even though there is no current use.

# 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)