view mercurial/statichttprepo.py @ 6456:db5324d3c257

Pager extension: switch it off if --debugger is set

The pager is preventing the debugger prompt and much of the
debugger output to be refreshed. Moreover the pager does not
make sense when debugging line by line.

(This supersedes the similar ui.debugflag patch. Disabling
the pager for debug output doesn't make that much sense,
as this is actually when the pager might be useful.)

# 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, httprangereader
import repo, localrepo, manifest, util
import urllib, urllib2, errno

class rangereader(httprangereader.httprangereader):
    def read(self, size=None):
        try:
            return httprangereader.httprangereader.read(self, size)
        except urllib2.HTTPError, inst:
            num = inst.code == 404 and errno.ENOENT or None
            raise IOError(num, 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.rstrip('/') + "/.hg"
        self.opener = opener(self.path)

        # find requirements
        try:
            requirements = self.opener("requires").read().splitlines()
        except IOError, inst:
            if inst.errno == errno.ENOENT:
                msg = _("'%s' does not appear to be an hg repository") % path
                raise repo.RepoError(msg)
            else:
                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 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:])