# statichttprepo.py - simple http repository class for mercurial

#

# This provides read-only repo access to repositories exported via static http

#

# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>

#

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

# of the GNU General Public License, incorporated herein by reference.

from demandload import *

from i18n import gettext as _

demandload(globals(), "changelog filelog httprangereader")

demandload(globals(), "localrepo manifest os urllib urllib2 util")

class rangereader(httprangereader.httprangereader):

    def read(self, size=None):

        try:

            return httprangereader.httprangereader.read(self, size)

        except urllib2.HTTPError, inst:

            raise IOError(None, inst)

        except urllib2.URLError, inst:

            raise IOError(None, inst.reason[1])

def opener(base):

    """return a function that opens files over http"""

    p = base

    def o(path, mode="r"):

        f = os.path.join(p, urllib.quote(path))

        return rangereader(f)

    return o

class statichttprepository(localrepo.localrepository):

    def __init__(self, ui, path):

        self._url = path

        self.path = (path + "/.hg")

        self.ui = ui

        self.revlogversion = 0

        self.opener = opener(self.path)

        self.sopener = opener(self.path)

        self.manifest = manifest.manifest(self.opener)

        self.changelog = changelog.changelog(self.opener)

        self.tagscache = None

        self.nodetagscache = None

        self.encodepats = None

        self.decodepats = None

    def url(self):

        return 'static-' + self._url

    def dev(self):

        return -1

    def local(self):

        return False

def instance(ui, path, create):

    if create:

        raise util.Abort(_('cannot create new static-http repository'))

    if path.startswith('old-http:'):

        ui.warn(_("old-http:// syntax is deprecated, "

                  "please use static-http:// instead\n"))

        path = path[4:]

    else:

        path = path[7:]

    return statichttprepository(ui, path)