Proper check to see if zip dest needs to be wrapped in tellable
From hgweb, calling archival.zipit fails with the error message
"Illegal seek". This happens because sys.stdout.tell() throws an
exception:
Traceback (most recent call last):
File "/usr/lib/python2.4/site-packages/mercurial/archival.py", line 99, in addfile
self.z.writestr(i, data)
File "/usr/lib/python2.4/zipfile.py", line 468, in writestr
zinfo.header_offset = self.fp.tell() # Start of header bytes
Checking whether hasattr(dest, 'tell') is insufficient, because
sys.stdout has a tell() method; you just can't call it.
This patch instead determines whether a fileobj is tellable by trying
to tell(), wrapping the fileobj if an exception is generated.
#!/usr/bin/env python
#
# An example CGI script to export multiple hgweb repos, edit as necessary
import cgitb, sys
cgitb.enable()
# sys.path.insert(0, "/path/to/python/lib") # if not a system-wide install
from mercurial import hgweb
# The config file looks like this. You can have paths to individual
# repos, collections of repos in a directory tree, or both.
#
# [paths]
# virtual/path = /real/path
# virtual/path = /real/path
#
# [collections]
# /prefix/to/strip/off = /root/of/tree/full/of/repos
#
# collections example: say directory tree /foo contains repos /foo/bar,
# /foo/quux/baz. Give this config section:
# [collections]
# /foo = /foo
# Then repos will list as bar and quux/baz.
# Alternatively you can pass a list of ('virtual/path', '/real/path') tuples
# or use a dictionary with entries like 'virtual/path': '/real/path'
h = hgweb.hgwebdir("hgweb.config")
h.run()