comparison hgext/convert/subversion.py @ 9829:1b2516a547d4

convert/svn: delegate to svn bindings if HTTP probe fails

convert extension tries to guess the remote repository type with HTTP probes.
Unfortunately, it does not handle authentication or HTTPS handshakes, so regular
svn repositories may be excluded. Instead, when a non-404 error is retrieved,
we keep trying with the svn bindings. The drawback is missing svn bindings will
make the conversion to fail even for non-svn targets. This can be avoided with
--source.

9828:4761e6203b77

import re
import sys
import cPickle as pickle
import tempfile
import urllib

from mercurial import strutil, util, encoding
from mercurial.i18n import _

# Subversion stuff. Works best with very recent Python SVN bindings

# Check to see if the given path is a local Subversion repo. Verify this by
# looking for several svn-specific files and directories in the given
# directory.
def filecheck(path, proto):
    for x in ('locks', 'hooks', 'format', 'db', ):
        if not os.path.exists(os.path.join(path, x)):
            return False
    return True

# Check to see if a given path is the root of an svn repo over http. We verify
# this by requesting a version-controlled URL we know can't exist and looking
# for the svn-specific "not found" XML.
def httpcheck(path, proto):
    return ('<m:human-readable errcode="160013">' in
            urllib.urlopen('%s://%s/!svn/ver/0/.svn' % (proto, path)).read())

protomap = {'http': httpcheck,
            'https': httpcheck,
            'file': filecheck,
            }
def issvnurl(url):
    try:
        proto, path = url.split('://', 1)
        if proto == 'file':
            path = urllib.url2pathname(path)
    except ValueError:

        path = os.path.abspath(url)
    if proto == 'file':
        path = path.replace(os.sep, '/')
    check = protomap.get(proto, lambda p, p2: False)
    while '/' in path:
        if check(path, proto):
            return True
        path = path.rsplit('/', 1)[0]
    return False

# SVN conversion code stolen from bzr-svn and tailor

        super(svn_source, self).__init__(ui, url, rev=rev)

        if not (url.startswith('svn://') or url.startswith('svn+ssh://') or
                (os.path.exists(url) and
                 os.path.exists(os.path.join(url, '.svn'))) or
                issvnurl(url)):
            raise NoRepo("%s does not look like a Subversion repo" % url)

        try:
            SubversionException
        except NameError:

9829:1b2516a547d4

import re
import sys
import cPickle as pickle
import tempfile
import urllib
import urllib2

from mercurial import strutil, util, encoding
from mercurial.i18n import _

# Subversion stuff. Works best with very recent Python SVN bindings

# Check to see if the given path is a local Subversion repo. Verify this by
# looking for several svn-specific files and directories in the given
# directory.
def filecheck(ui, path, proto):
    for x in ('locks', 'hooks', 'format', 'db', ):
        if not os.path.exists(os.path.join(path, x)):
            return False
    return True

# Check to see if a given path is the root of an svn repo over http. We verify
# this by requesting a version-controlled URL we know can't exist and looking
# for the svn-specific "not found" XML.
def httpcheck(ui, path, proto):
    try:
        opener = urllib2.build_opener()
        rsp = opener.open('%s://%s/!svn/ver/0/.svn' % (proto, path))
        return '<m:human-readable errcode="160013">' in rsp.read()
    except urllib2.HTTPError, inst:
        if inst.code == 404:
            return False
        # Except for 404 we cannot know for sure this is not an svn repo
        ui.warn(_('svn: cannot probe remote repository, assume it could be '
                  'a subversion repository. Use --source if you know better.\n'))
        return True
    except:
        # Could be urllib2.URLError if the URL is invalid or anything else.
        return False

protomap = {'http': httpcheck,
            'https': httpcheck,
            'file': filecheck,
            }
def issvnurl(ui, url):
    try:
        proto, path = url.split('://', 1)
        if proto == 'file':
            path = urllib.url2pathname(path)
    except ValueError:

        path = os.path.abspath(url)
    if proto == 'file':
        path = path.replace(os.sep, '/')
    check = protomap.get(proto, lambda p, p2: False)
    while '/' in path:
        if check(ui, path, proto):
            return True
        path = path.rsplit('/', 1)[0]
    return False

# SVN conversion code stolen from bzr-svn and tailor

        super(svn_source, self).__init__(ui, url, rev=rev)

        if not (url.startswith('svn://') or url.startswith('svn+ssh://') or
                (os.path.exists(url) and
                 os.path.exists(os.path.join(url, '.svn'))) or
                issvnurl(ui, url)):
            raise NoRepo("%s does not look like a Subversion repo" % url)

        try:
            SubversionException
        except NameError: