comparison mercurial/cmdutil.py @ 19474:894fd1a7c533 stable

cmdutil: core functionality to block during multistep commands (issue3955)

This adds a registration point and check functions that will allow
commands to check if multistep operations like an interrupted graft or
rebase are in progress before proceeding.

19473:10a0ae668fe6

    return cmd

# a list of (ui, repo) functions called by commands.summary
summaryhooks = util.hooks()

19474:894fd1a7c533

    return cmd

# a list of (ui, repo) functions called by commands.summary
summaryhooks = util.hooks()

# A list of state files kept by multistep operations like graft.
# Since graft cannot be aborted, it is considered 'clearable' by update.
# note: bisect is intentionally excluded
# (state file, clearable, error, hint)
unfinishedstates = [
    ('graftstate', True, _('graft in progress'),
     _("use 'hg graft --continue' or 'hg update' to abort"))
    ]

def checkunfinished(repo):
    '''Look for an unfinished multistep operation, like graft, and abort
    if found. It's probably good to check this right before
    bailifchanged().
    '''
    for f, clearable, msg, hint in unfinishedstates:
        if repo.vfs.exists(f):
            raise util.Abort(msg, hint=hint)

def clearunfinished(repo):
    '''Check for unfinished operations (as above), and clear the ones
    that are clearable.
    '''
    for f, clearable, msg, hint in unfinishedstates:
        if not clearable and repo.vfs.exists(f):
            raise util.Abort(msg, hint=hint)
    for f, clearable, msg, hint in unfinishedstates:
        if clearable and repo.vfs.exists(f):
            util.unlink(repo.join(f))