view tests/test-symlink-os-yes-fs-no.py @ 24177:f53b7174facf

hgweb: extract changeset template mapping generation to own function

Similar in spirit to 513d47905114, I want to write an extension to
make available extra template keywords so hgweb templates can include
extra data.

To do this today requires monkeypatching the templater, which I think is
the wrong place to perform this modification.

This patch extracts the creation of the templater arguments to a
standalone function - one that can be monkeypatched by extensions.

I would very much like for extensions to be able to inject extra
templater parameters into *any* template. However, I'm not sure the best
way to facilitate this, as hgweb commands invoke the templater before
returning and we want the extensions to have access to rich data
structures like the context instances. We need cooperation inside hgweb
command functions. The use case screams for something like internal-only
"hooks." This is exactly what my (rejected) "events" patch series
provided. Perhaps that feature should be reconsidered...

import os, sys, time
from mercurial import hg, ui, commands, util

TESTDIR = os.environ["TESTDIR"]
BUNDLEPATH = os.path.join(TESTDIR, 'bundles', 'test-no-symlinks.hg')

# only makes sense to test on os which supports symlinks
if not getattr(os, "symlink", False):
    sys.exit(80) # SKIPPED_STATUS defined in run-tests.py

u = ui.ui()
# hide outer repo
hg.peer(u, {}, '.', create=True)

# clone with symlink support
hg.clone(u, {}, BUNDLEPATH, 'test0')

repo = hg.repository(u, 'test0')

# wait a bit, or the status call wont update the dirstate
time.sleep(1)
commands.status(u, repo)

# now disable symlink support -- this is what os.symlink would do on a
# non-symlink file system
def symlink_failure(src, dst):
    raise OSError(1, "Operation not permitted")
os.symlink = symlink_failure

# dereference links as if a Samba server has exported this to a
# Windows client
for f in 'test0/a.lnk', 'test0/d/b.lnk':
    os.unlink(f)
    fp = open(f, 'wb')
    fp.write(util.readfile(f[:-4]))
    fp.close()

# reload repository
u = ui.ui()
repo = hg.repository(u, 'test0')
commands.status(u, repo)

# try cloning a repo which contains symlinks
u = ui.ui()
hg.clone(u, {}, BUNDLEPATH, 'test1')