view mercurial/sshrepo.py @ 1740:f95654385065

add --daemon option to serve command. for issue 45.
code looks odd because it is portable to windows. windows does not have
os.fork, so have to spawn and use pipe to tell parent ready instead.

# sshrepo.py - ssh repository proxy class for mercurial
#
# Copyright 2005 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.

from node import *
from remoterepo import *
from i18n import gettext as _
from demandload import *
demandload(globals(), "hg os re stat")

class sshrepository(remoterepository):
    def __init__(self, ui, path):
        self.url = path
        self.ui = ui

        m = re.match(r'ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?', path)
        if not m:
            raise hg.RepoError(_("couldn't parse destination %s") % path)

        self.user = m.group(2)
        self.host = m.group(3)
        self.port = m.group(5)
        self.path = m.group(7) or "."

        args = self.user and ("%s@%s" % (self.user, self.host)) or self.host
        args = self.port and ("%s -p %s") % (args, self.port) or args

        sshcmd = self.ui.config("ui", "ssh", "ssh")
        remotecmd = self.ui.config("ui", "remotecmd", "hg")
        cmd = '%s %s "%s -R %s serve --stdio"'
        cmd = cmd % (sshcmd, args, remotecmd, self.path)

        ui.note('running %s\n' % cmd)
        self.pipeo, self.pipei, self.pipee = os.popen3(cmd, 'b')

    def readerr(self):
        while 1:
            size = os.fstat(self.pipee.fileno())[stat.ST_SIZE]
            if size == 0: break
            l = self.pipee.readline()
            if not l: break
            self.ui.status(_("remote: "), l)

    def __del__(self):
        try:
            self.pipeo.close()
            self.pipei.close()
            # read the error descriptor until EOF
            for l in self.pipee:
                self.ui.status(_("remote: "), l)
            self.pipee.close()
        except:
            pass

    def dev(self):
        return -1

    def do_cmd(self, cmd, **args):
        self.ui.debug(_("sending %s command\n") % cmd)
        self.pipeo.write("%s\n" % cmd)
        for k, v in args.items():
            self.pipeo.write("%s %d\n" % (k, len(v)))
            self.pipeo.write(v)
        self.pipeo.flush()

        return self.pipei

    def call(self, cmd, **args):
        r = self.do_cmd(cmd, **args)
        l = r.readline()
        self.readerr()
        try:
            l = int(l)
        except:
            raise hg.RepoError(_("unexpected response '%s'") % l)
        return r.read(l)

    def lock(self):
        self.call("lock")
        return remotelock(self)

    def unlock(self):
        self.call("unlock")

    def heads(self):
        d = self.call("heads")
        try:
            return map(bin, d[:-1].split(" "))
        except:
            raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))

    def branches(self, nodes):
        n = " ".join(map(hex, nodes))
        d = self.call("branches", nodes=n)
        try:
            br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
            return br
        except:
            raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))

    def between(self, pairs):
        n = "\n".join(["-".join(map(hex, p)) for p in pairs])
        d = self.call("between", pairs=n)
        try:
            p = [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
            return p
        except:
            raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))

    def changegroup(self, nodes, kind):
        n = " ".join(map(hex, nodes))
        f = self.do_cmd("changegroup", roots=n)
        return self.pipei

    def addchangegroup(self, cg):
        d = self.call("addchangegroup")
        if d:
            raise hg.RepoError(_("push refused: %s"), d)

        while 1:
            d = cg.read(4096)
            if not d: break
            self.pipeo.write(d)
            self.readerr()

        self.pipeo.flush()

        self.readerr()
        l = int(self.pipei.readline())
        return self.pipei.read(l) != ""