view doc/docchecker @ 36859:422be99519e5

hgweb: remove support for short query string based aliases (BC)

Form data exposed by hgweb is post-processed to expand certain
shortcuts. For example, URLs with "?cs=@" is essentially expanded to
"?cmd=changeset&node=@". And the URL router treats this the same
as "/changeset/@".

These shortcuts were initially added in 2005 in 34cb3957d875 and
964baa35faf8. They have rarely been touched in the last decade (just
moving code around a bit).

We have almost no test coverage of this feature. AFAICT no templates
reference URLs of this form. I even looked at the initial version
of paper and coal from ~2008 and they use the "/command/params" URL
form and not these shortcuts.

Furthermore, I couldn't even get some shortcuts to work! For example,
"?sl=@" attempts to do a revision search instead of showing shortlog
starting at revision @. Maybe I'm just doing it wrong?

Because this is ancient, mostly untested code, there is a migration
path to something better, and because anyone passionate enough to
preserve URLs can install URL redirects, let's nuke the feature.

.. bc::

   Query string shorts in hgweb like ``?cs=@`` have been removed. Use
   URLs of the form ``/:cmd`` instead.

Differential Revision: https://phab.mercurial-scm.org/D2773

#!/usr/bin/env python
#
# docchecker - look for problematic markup
#
# Copyright 2016 timeless <[e-mail]> and others
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import, print_function

import re
import sys

leadingline = re.compile(r'(^\s*)(\S.*)$')

checks = [
  (r""":hg:`[^`]*'[^`]*`""",
    """warning: please avoid nesting ' in :hg:`...`"""),
  (r'\w:hg:`',
    'warning: please have a space before :hg:'),
  (r"""(?:[^a-z][^'.])hg ([^,;"`]*'(?!hg)){2}""",
    '''warning: please use " instead of ' for hg ... "..."'''),
]

def check(line):
    messages = []
    for match, msg in checks:
        if re.search(match, line):
            messages.append(msg)
    if messages:
        print(line)
        for msg in messages:
            print(msg)

def work(file):
    (llead, lline) = ('', '')

    for line in file:
        # this section unwraps lines
        match = leadingline.match(line)
        if not match:
            check(lline)
            (llead, lline) = ('', '')
            continue

        lead, line = match.group(1), match.group(2)
        if (lead == llead):
            if (lline != ''):
                lline += ' ' + line
            else:
                lline = line
        else:
            check(lline)
            (llead, lline) = (lead, line)
    check(lline)

def main():
    for f in sys.argv[1:]:
        try:
            with open(f) as file:
                work(file)
        except BaseException as e:
            print("failed to process %s: %s" % (f, e))

main()