match: handle everything-matching using new alwaysmatcher
Having a special matcher that always matches seems to make more sense
than making one of the other matchers handle the case. For now, we
just use this new matcher when no patterns were provided.
# Extension dedicated to test patch.diff() upgrade modes
from __future__ import absolute_import
from mercurial import (
error,
patch,
registrar,
scmutil,
)
cmdtable = {}
command = registrar.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 error.Abort('losing data for %s' % fn)
else:
raise error.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))