view tests/autodiff.py @ 25122:755d23a49170

match: resolve filesets in subrepos for commands given the '-S' argument

This will work for any command that creates its matcher via scmutil.match(), but
only the files command is tested here (both workingctx and basectx based tests).
The previous behavior was to completely ignore the files in the subrepo, even
though -S was given.

My first attempt was to teach context.walk() to optionally recurse, but once
that was in place and the complete file list was built up, the predicate test
would fail with 'path in nested repo' when a file in a subrepo was accessed
through the parent context.

There are two slightly surprising behaviors with this functionality.  First, any
path provided inside the fileset isn't narrowed when it is passed to the
subrepo.  I dont see any clean way to do that in the matcher.  Fortunately, the
'subrepo()' fileset is the only one to take a path.

The second surprise is that status predicates are resolved against the subrepo,
not the parent like 'hg status -S' is.  I don't see any way to fix that either,
given the path auditor error mentioned above.

# Extension dedicated to test patch.diff() upgrade modes
#
#
from mercurial import cmdutil, scmutil, patch, util

cmdtable = {}
command = cmdutil.command(cmdtable)

@command('autodiff',
    [('', 'git', '', 'git upgrade mode (yes/no/auto/warn/abort)')],
    '[OPTION]... [FILE]...')
def autodiff(ui, repo, *pats, **opts):
    diffopts = patch.difffeatureopts(ui, opts)
    git = opts.get('git', 'no')
    brokenfiles = set()
    losedatafn = None
    if git in ('yes', 'no'):
        diffopts.git = git == 'yes'
        diffopts.upgrade = False
    elif git == 'auto':
        diffopts.git = False
        diffopts.upgrade = True
    elif git == 'warn':
        diffopts.git = False
        diffopts.upgrade = True
        def losedatafn(fn=None, **kwargs):
            brokenfiles.add(fn)
            return True
    elif git == 'abort':
        diffopts.git = False
        diffopts.upgrade = True
        def losedatafn(fn=None, **kwargs):
            raise util.Abort('losing data for %s' % fn)
    else:
        raise util.Abort('--git must be yes, no or auto')

    node1, node2 = scmutil.revpair(repo, [])
    m = scmutil.match(repo[node2], pats, opts)
    it = patch.diff(repo, node1, node2, match=m, opts=diffopts,
                    losedatafn=losedatafn)
    for chunk in it:
        ui.write(chunk)
    for fn in sorted(brokenfiles):
        ui.write(('data lost for: %s\n' % fn))