mercurial/sshrepo.py
author Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
Tue, 22 Mar 2011 07:38:32 +0100
changeset 13721 3458c15ab2f0
parent 13464 da0ddd62b9d8
child 13819 d16894e29f91
permissions -rw-r--r--
wireproto: fix handling of '*' args for HTTP and SSH
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# sshrepo.py - ssh repository proxy class for mercurial
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#
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import _
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import util, error, wireproto
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import re
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class remotelock(object):
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    def __init__(self, repo):
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        self.repo = repo
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    def release(self):
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        self.repo.unlock()
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        self.repo = None
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    def __del__(self):
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        if self.repo:
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            self.release()
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class sshrepository(wireproto.wirerepository):
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    def __init__(self, ui, path, create=0):
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        self._url = path
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        self.ui = ui
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        m = re.match(r'^ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?$', path)
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        if not m:
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            self._abort(error.RepoError(_("couldn't parse location %s") % path))
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        self.user = m.group(2)
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        if self.user and ':' in self.user:
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            self._abort(error.RepoError(_("password in URL not supported")))
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        self.host = m.group(3)
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        self.port = m.group(5)
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        self.path = m.group(7) or "."
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        sshcmd = self.ui.config("ui", "ssh", "ssh")
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        remotecmd = self.ui.config("ui", "remotecmd", "hg")
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        args = util.sshargs(sshcmd, self.host, self.user, self.port)
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        if create:
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            cmd = '%s %s "%s init %s"'
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            cmd = cmd % (sshcmd, args, remotecmd, self.path)
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            ui.note(_('running %s\n') % cmd)
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            res = util.system(cmd)
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            if res != 0:
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                self._abort(error.RepoError(_("could not create remote repo")))
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        self.validate_repo(ui, sshcmd, args, remotecmd)
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    def url(self):
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        return self._url
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    def validate_repo(self, ui, sshcmd, args, remotecmd):
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        # cleanup up previous run
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        self.cleanup()
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        cmd = '%s %s "%s -R %s serve --stdio"'
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        cmd = cmd % (sshcmd, args, remotecmd, self.path)
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        cmd = util.quotecommand(cmd)
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        ui.note(_('running %s\n') % cmd)
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        self.pipeo, self.pipei, self.pipee = util.popen3(cmd)
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        # skip any noise generated by remote shell
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        self._callstream("hello")
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        r = self._callstream("between", pairs=("%s-%s" % ("0"*40, "0"*40)))
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        lines = ["", "dummy"]
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        max_noise = 500
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        while lines[-1] and max_noise:
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            l = r.readline()
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            self.readerr()
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            if lines[-1] == "1\n" and l == "\n":
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                break
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            if l:
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                ui.debug("remote: ", l)
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            lines.append(l)
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            max_noise -= 1
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        else:
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            self._abort(error.RepoError(_("no suitable response from remote hg")))
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        self.capabilities = set()
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        for l in reversed(lines):
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            if l.startswith("capabilities:"):
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                self.capabilities.update(l[:-1].split(":")[1].split())
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                break
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    def readerr(self):
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        while 1:
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            size = util.fstat(self.pipee).st_size
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            if size == 0:
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                break
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            s = self.pipee.read(size)
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            if not s:
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                break
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            for l in s.splitlines():
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                self.ui.status(_("remote: "), l, '\n')
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    def _abort(self, exception):
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        self.cleanup()
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        raise exception
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    def cleanup(self):
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        try:
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            self.pipeo.close()
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            self.pipei.close()
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            # read the error descriptor until EOF
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            for l in self.pipee:
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                self.ui.status(_("remote: "), l)
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            self.pipee.close()
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        except:
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            pass
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    __del__ = cleanup
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    def _callstream(self, cmd, **args):
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        self.ui.debug("sending %s command\n" % cmd)
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        self.pipeo.write("%s\n" % cmd)
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        _func, names = wireproto.commands[cmd]
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        keys = names.split()
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        wireargs = {}
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        for k in keys:
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            if k == '*':
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   127
                wireargs['*'] = args
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   128
                break
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   129
            else:
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                wireargs[k] = args[k]
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   131
                del args[k]
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        for k, v in sorted(wireargs.iteritems()):
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            self.pipeo.write("%s %d\n" % (k, len(v)))
13721
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   134
            if isinstance(v, dict):
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   135
                for dk, dv in v.iteritems():
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   136
                    self.pipeo.write("%s %d\n" % (dk, len(dv)))
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   137
                    self.pipeo.write(dv)
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   138
            else:
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   139
                self.pipeo.write(v)
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        self.pipeo.flush()
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   141
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        return self.pipei
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   143
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   144
    def _call(self, cmd, **args):
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        self._callstream(cmd, **args)
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   146
        return self._recv()
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diff changeset
   147
11592
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   148
    def _callpush(self, cmd, fp, **args):
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   149
        r = self._call(cmd, **args)
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   150
        if r:
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   151
            return '', r
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diff changeset
   152
        while 1:
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   153
            d = fp.read(4096)
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   154
            if not d:
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   155
                break
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   156
            self._send(d)
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   157
        self._send("", flush=True)
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   158
        r = self._recv()
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diff changeset
   159
        if r:
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diff changeset
   160
            return '', r
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diff changeset
   161
        return self._recv(), ''
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diff changeset
   162
11591
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diff changeset
   163
    def _decompress(self, stream):
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diff changeset
   164
        return stream
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diff changeset
   165
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diff changeset
   166
    def _recv(self):
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diff changeset
   167
        l = self.pipei.readline()
646
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parents: 644
diff changeset
   168
        self.readerr()
342927da4f4c Show remote client output with "remote:"
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parents: 644
diff changeset
   169
        try:
342927da4f4c Show remote client output with "remote:"
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diff changeset
   170
            l = int(l)
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diff changeset
   171
        except:
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parents: 11589
diff changeset
   172
            self._abort(error.ResponseError(_("unexpected response:"), l))
5978
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diff changeset
   173
        return self.pipei.read(l)
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diff changeset
   174
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diff changeset
   175
    def _send(self, data, flush=False):
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parents: 5293
diff changeset
   176
        self.pipeo.write("%d\n" % len(data))
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diff changeset
   177
        if data:
7939c71f3132 sshrepo: be more careful while reading data
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diff changeset
   178
            self.pipeo.write(data)
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diff changeset
   179
        if flush:
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parents: 5293
diff changeset
   180
            self.pipeo.flush()
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diff changeset
   181
        self.readerr()
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diff changeset
   182
638
35f7adfefa69 Add a scheme for handling remote locking
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parents: 637
diff changeset
   183
    def lock(self):
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diff changeset
   184
        self._call("lock")
638
35f7adfefa69 Add a scheme for handling remote locking
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diff changeset
   185
        return remotelock(self)
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parents: 637
diff changeset
   186
35f7adfefa69 Add a scheme for handling remote locking
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diff changeset
   187
    def unlock(self):
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diff changeset
   188
        self._call("unlock")
638
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parents: 637
diff changeset
   189
2673
109a22f5434a hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
   190
    def addchangegroup(self, cg, source, url):
11153
9936ed1d04f4 push: document return values between various repo methods.
Greg Ward <greg-hg@gerg.ca>
parents: 10282
diff changeset
   191
        '''Send a changegroup to the remote server.  Return an integer
9936ed1d04f4 push: document return values between various repo methods.
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parents: 10282
diff changeset
   192
        similar to unbundle(). DEPRECATED, since it requires locking the
9936ed1d04f4 push: document return values between various repo methods.
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parents: 10282
diff changeset
   193
        remote.'''
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diff changeset
   194
        d = self._call("addchangegroup")
639
31cebba881a0 Add addchangegroup to the ssh protocol
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parents: 638
diff changeset
   195
        if d:
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parents: 11589
diff changeset
   196
            self._abort(error.RepoError(_("push refused: %s") % d))
639
31cebba881a0 Add addchangegroup to the ssh protocol
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parents: 638
diff changeset
   197
        while 1:
31cebba881a0 Add addchangegroup to the ssh protocol
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parents: 638
diff changeset
   198
            d = cg.read(4096)
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7939c71f3132 sshrepo: be more careful while reading data
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diff changeset
   199
            if not d:
7939c71f3132 sshrepo: be more careful while reading data
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diff changeset
   200
                break
639
31cebba881a0 Add addchangegroup to the ssh protocol
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parents: 638
diff changeset
   201
            self.pipeo.write(d)
646
342927da4f4c Show remote client output with "remote:"
Matt Mackall <mpm@selenic.com>
parents: 644
diff changeset
   202
            self.readerr()
639
31cebba881a0 Add addchangegroup to the ssh protocol
Matt Mackall <mpm@selenic.com>
parents: 638
diff changeset
   203
31cebba881a0 Add addchangegroup to the ssh protocol
Matt Mackall <mpm@selenic.com>
parents: 638
diff changeset
   204
        self.pipeo.flush()
31cebba881a0 Add addchangegroup to the ssh protocol
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parents: 638
diff changeset
   205
646
342927da4f4c Show remote client output with "remote:"
Matt Mackall <mpm@selenic.com>
parents: 644
diff changeset
   206
        self.readerr()
5978
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parents: 5293
diff changeset
   207
        r = self._recv()
2019
ced2d3620f95 add merge command. means same thing as "update -m".
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1736
diff changeset
   208
        if not r:
ced2d3620f95 add merge command. means same thing as "update -m".
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parents: 1736
diff changeset
   209
            return 1
5978
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diff changeset
   210
        try:
7939c71f3132 sshrepo: be more careful while reading data
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parents: 5293
diff changeset
   211
            return int(r)
7939c71f3132 sshrepo: be more careful while reading data
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parents: 5293
diff changeset
   212
        except:
11590
0b15aee0a306 protocol: convert some ssh abort calls
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parents: 11589
diff changeset
   213
            self._abort(error.ResponseError(_("unexpected response:"), r))
2612
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2549
diff changeset
   214
2740
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
   215
instance = sshrepository