# wireproto.py - generic wire protocol support functions

#

# Copyright 2005-2010 Matt Mackall <mpm@selenic.com>

#

# This software may be used and distributed according to the terms of the

# GNU General Public License version 2 or any later version.

from i18n import _

from node import bin, hex

import urllib

import pushkey as pushkey_

def dispatch(repo, proto, command):

    if command not in commands:

        return False

    func, spec = commands[command]

    args = proto.getargs(spec)

    proto.respond(func(repo, *args))

    return True

def between(repo, pairs):

    pairs = [map(bin, p.split("-")) for p in pairs.split(" ")]

    r = []

    for b in repo.between(pairs):

        r.append(" ".join(map(hex, b)) + "\n")

    return "".join(r)

def branchmap(repo):

    branchmap = repo.branchmap()

    heads = []

    for branch, nodes in branchmap.iteritems():

        branchname = urllib.quote(branch)

        branchnodes = [hex(node) for node in nodes]

        heads.append('%s %s' % (branchname, ' '.join(branchnodes)))

    return '\n'.join(heads)

def branches(repo, nodes):

    nodes = map(bin, nodes.split(" "))

    r = []

    for b in repo.branches(nodes):

        r.append(" ".join(map(hex, b)) + "\n")

    return "".join(r)

def heads(repo):

    h = repo.heads()

    return " ".join(map(hex, h)) + "\n"

def listkeys(repo, namespace):

    d = pushkey_.list(repo, namespace).items()

    t = '\n'.join(['%s\t%s' % (k.encode('string-escape'),

                               v.encode('string-escape')) for k, v in d])

    return t

def lookup(repo, key):

    try:

        r = hex(repo.lookup(key))

        success = 1

    except Exception, inst:

        r = str(inst)

        success = 0

    return "%s %s\n" % (success, r)

def pushkey(repo, namespace, key, old, new):

    r = pushkey_.push(repo, namespace, key, old, new)

    return '%s\n' % int(r)

commands = {

    'between': (between, 'pairs'),

    'branchmap': (branchmap, ''),

    'branches': (branches, 'nodes'),

    'heads': (heads, ''),

    'listkeys': (listkeys, 'namespace'),

    'lookup': (lookup, 'key'),

    'pushkey': (pushkey, 'namespace key old new'),

}