view mercurial/statichttprepo.py @ 2966:fb493241d7f6

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# 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 <[e-mail]>
#
# 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.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)