view mercurial/statichttprepo.py @ 5239:8860f29447c1

imerge: fix ancestor calculation
If wctx already has two parents, ancestor calculation is wrong.
Normally merge is called before wctx gets the second parent, so
we simulate this in imerge by temporarily popping the second parent
before calling filemerge. Highly dirty.

This patch also handles the ParseError move from cmdutil to dispatch.

# statichttprepo.py - simple http repository class for mercurial
#
# This provides read-only repo access to repositories exported via static http
#
# Copyright 2005-2007 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 i18n import _
import changelog, filelog, httprangereader
import repo, 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 = "/".join((p, urllib.quote(path)))
        return rangereader(f)
    return o

class statichttprepository(localrepo.localrepository):
    def __init__(self, ui, path):
        self._url = path
        self.ui = ui

        self.path = (path + "/.hg")
        self.opener = opener(self.path)
        # find requirements
        try:
            requirements = self.opener("requires").read().splitlines()
        except IOError:
            requirements = []
        # check them
        for r in requirements:
            if r not in self.supported:
                raise repo.RepoError(_("requirement '%s' not supported") % r)

        # setup store
        if "store" in requirements:
            self.encodefn = util.encodefilename
            self.decodefn = util.decodefilename
            self.spath = self.path + "/store"
        else:
            self.encodefn = lambda x: x
            self.decodefn = lambda x: x
            self.spath = self.path
        self.sopener = util.encodedopener(opener(self.spath), self.encodefn)

        self.manifest = manifest.manifest(self.sopener)
        self.changelog = changelog.changelog(self.sopener)
        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'))
    return statichttprepository(ui, path[7:])