[PATCH 8 of 8] histedit: move outgoing processing in it own function

[Augie Fackler]

Crewed, with extensive English tweaks to commit messages, a rebase, and the revert of one edit in patch 1 as suggested by mg.

I pulled from your repo and used histedit for updates before pushing, so hopefully you'll get some obsolete marker goodness and can see what I changed easily.

On Apr 16, 2013, at 3:20 PM, Pierre-Yves David <pierre-yves.david at ens-lyon.org> wrote:

> # HG changeset patch
> # User Pierre-Yves David <pierre-yves.david at logilab.fr>
> # Date 1366139690 -7200
> # Node ID 137c34957e77b88f3026c406b3abf4f3b5bf7dd6
> # Parent  1315e6aa4ba9eeaf17125269d6218c2b1a21d2e9
> histedit: move outgoing processing in it own function
> 
> Every piece of code extracted from the mail command is a win. We simplify
> changeset determination in the process. Parent cease being a list before
> becoming a node. We how have a root variable containing a node all the time.
> 
> diff --git a/hgext/histedit.py b/hgext/histedit.py
> --- a/hgext/histedit.py
> +++ b/hgext/histedit.py
> @@ -402,10 +402,33 @@ def message(ui, repo, ctx, ha, opts):
>     if oldctx.node() != newctx.node():
>         return newctx, [(oldctx.node(), (new,))]
>     # We didn't make an edit, so just indicate no replaced nodes
>     return newctx, []
> 
> +def findoutgoing(ui, repo, remote=None, force=False, opts={}):
> +    """utility function to find the first outgoing changeset
> +
> +    Used by initialisation code"""
> +    dest = ui.expandpath(remote or 'default-push', remote or 'default')
> +    dest, revs = hg.parseurl(dest, None)[:2]
> +    ui.status(_('comparing with %s\n') % util.hidepassword(dest))
> +
> +    revs, checkout = hg.addbranchrevs(repo, repo, revs, None)
> +    other = hg.peer(repo, opts, dest)
> +
> +    if revs:
> +        revs = [repo.lookup(rev) for rev in revs]
> +
> +    # hexlify nodes from outgoing, because we're going to parse
> +    # parent[0] using revsingle below, and if the binary hash
> +    # contains special revset characters like ":" the revset
> +    # parser can choke.
> +    outgoing = discovery.findcommonoutgoing(repo, other, [], force=force)
> +    if not outgoing.missing:
> +        raise util.Abort(_('no outgoing ancestors'))
> +    return outgoing.missing[0]
> +
> actiontable = {'p': pick,
>                'pick': pick,
>                'e': edit,
>                'edit': edit,
>                'f': fold,
> @@ -464,37 +487,15 @@ def histedit(ui, repo, *freeargs, **opts
>                 raise util.Abort(_('no revisions allowed with --outgoing'))
>             if len(freeargs) > 1:
>                 raise util.Abort(
>                     _('only one repo argument allowed with --outgoing'))
>         else:
> -            parent = list(freeargs) + opts.get('rev', [])
> -            if len(parent) != 1:
> +            revs.extend(freeargs)
> +            if len(revs) != 1:
>                 raise util.Abort(
>                     _('histedit requires exactly one parent revision'))
> 
> -    if opts.get('outgoing'):
> -        if freeargs:
> -            parent = freeargs[0]
> -
> -        dest = ui.expandpath(parent or 'default-push', parent or 'default')
> -        dest, revs = hg.parseurl(dest, None)[:2]
> -        ui.status(_('comparing with %s\n') % util.hidepassword(dest))
> -
> -        revs, checkout = hg.addbranchrevs(repo, repo, revs, None)
> -        other = hg.peer(repo, opts, dest)
> -
> -        if revs:
> -            revs = [repo.lookup(rev) for rev in revs]
> -
> -        # hexlify nodes from outgoing, because we're going to parse
> -        # parent[0] using revsingle below, and if the binary hash
> -        # contains special revset characters like ":" the revset
> -        # parser can choke.
> -        parent = [node.hex(n) for n in discovery.findcommonoutgoing(
> -            repo, other, [], force=force).missing[0:1]]
> -        if not parent:
> -            raise util.Abort(_('no outgoing ancestors'))
> 
>     if goal == 'continue':
>         (parentctxnode, rules, keep, topmost, replacements) = readstate(repo)
>         currentparent, wantnull = repo.dirstate.parents()
>         parentctx = repo[parentctxnode]
> @@ -511,24 +512,31 @@ def histedit(ui, repo, *freeargs, **opts
>         return
>     else:
>         cmdutil.bailifchanged(repo)
> 
>         topmost, empty = repo.dirstate.parents()
> -
> -        parent = scmutil.revsingle(repo, parent[0]).node()
> +        if outg:
> +            if freeargs:
> +                remote = freeargs[0]
> +            else:
> +                remote = None
> +            root = findoutgoing(ui, repo, remote, force, opts)
> +        else:
> +            root = revs[0]
> +            root = scmutil.revsingle(repo, root).node()
> 
>         keep = opts.get('keep', False)
> -        revs = between(repo, parent, topmost, keep)
> +        revs = between(repo, root, topmost, keep)
>         if not revs:
>             raise util.Abort(_('%s is not an ancestor of working directory') %
> -                             node.short(parent))
> +                             node.short(root))
> 
>         ctxs = [repo[r] for r in revs]
>         if not rules:
>             rules = '\n'.join([makedesc(c) for c in ctxs])
>             rules += '\n\n'
> -            rules += editcomment % (node.short(parent), node.short(topmost))
> +            rules += editcomment % (node.short(root), node.short(topmost))
>             rules = ui.edit(rules, ui.username())
>             # Save edit rules in .hg/histedit-last-edit.txt in case
>             # the user needs to ask for help after something
>             # surprising happens.
>             f = open(repo.join('histedit-last-edit.txt'), 'w')
> @@ -543,11 +551,11 @@ def histedit(ui, repo, *freeargs, **opts
>             f.close()
>         rules = [l for l in (r.strip() for r in rules.splitlines())
>                  if l and not l[0] == '#']
>         rules = verifyrules(rules, repo, ctxs)
> 
> -        parentctx = repo[parent].parents()[0]
> +        parentctx = repo[root].parents()[0]
>         keep = opts.get('keep', False)
>         replacements = []
> 
> 
>     while rules: