[PATCH v4] version: show enabled extensions (issue4209)

[Augie Fackler]

On Jul 4, 2014, at 4:02 AM, anatoly techtonik <techtonik at gmail.com> wrote:

> # HG changeset patch
> # User anatoly techtonik <techtonik at gmail.com>
> # Date 1402397077 -10800
> #      Tue Jun 10 13:44:37 2014 +0300
> # Branch stable
> # Node ID 867f0469a179167b2eeb70337beafcf2ae9524d9
> # Parent  2392b9e1936628faeec818368169a68b1fadd95f
> version: show enabled extensions (issue4209)

Queud! I'm satisfied enough with this that I'd like to see it land now - folks should feel encouraged to send follow-ups if needed.

Thanks for bearing with us!

> 
> This code is based by hg-versions extension (GPLv2)
> by Markus Zapke-Gruendemann <info at keimlink.de>
> 
> 
> http://mercurial.selenic.com/wiki/VersionsExtension
> 
> diff -r 2392b9e19366 -r 867f0469a179 mercurial/commands.py
> --- a/mercurial/commands.py	Tue Jul 01 23:32:18 2014 -0500
> +++ b/mercurial/commands.py	Tue Jun 10 13:44:37 2014 +0300
> @@ -14,6 +14,7 @@
> import patch, help, encoding, templatekw, discovery
> import archival, changegroup, cmdutil, hbisect
> import sshserver, hgweb, commandserver
> +import extensions
> from hgweb import server as hgweb_server
> import merge as mergemod
> import minirst, revset, fileset
> @@ -5921,6 +5922,19 @@
>         "not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n"
>     ))
> 
> +    ui.note(_("\nEnabled extensions:\n\n"))
> +    if ui.verbose:
> +        # format names and versions into columns
> +        names = []
> +        vers = []
> +        for name, module in extensions.extensions():
> +            names.append(name)
> +            vers.append(extensions.moduleversion(module))
> +        maxnamelen = max(len(n) for n in names)
> +        for i, name in enumerate(names):
> +            ui.write("  %-*s  %s\n" % (maxnamelen, name, vers[i]))
> +
> +
> norepo = ("clone init version help debugcommands debugcomplete"
>           " debugdate debuginstall debugfsinfo debugpushkey debugwireargs"
>           " debugknown debuggetbundle debugbundle")
> diff -r 2392b9e19366 -r 867f0469a179 mercurial/extensions.py
> --- a/mercurial/extensions.py	Tue Jul 01 23:32:18 2014 -0500
> +++ b/mercurial/extensions.py	Tue Jun 10 13:44:37 2014 +0300
> @@ -367,3 +367,16 @@
>         exts[ename] = doc.splitlines()[0].strip()
> 
>     return exts
> +
> +def moduleversion(module):
> +    '''return version information from given module as a string'''
> +    if (util.safehasattr(module, 'get_version')
> +          and callable(module.get_version)):
> +        version = module.get_version()
> +    elif util.safehasattr(module, '__version__'):
> +        version = module.__version__
> +    else:
> +        version = ''
> +    if isinstance(version, (list, tuple)):
> +        version = '.'.join(str(o) for o in version)
> +    return version
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