|
|
# extdiff.py - external diff program support for mercurial
|
|
|
#
|
|
|
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2 or any later version.
|
|
|
|
|
|
'''command to allow external programs to compare revisions
|
|
|
|
|
|
The extdiff Mercurial extension allows you to use external programs
|
|
|
to compare revisions, or revision with working directory. The external
|
|
|
diff programs are called with a configurable set of options and two
|
|
|
non-option arguments: paths to directories containing snapshots of
|
|
|
files to compare.
|
|
|
|
|
|
The extdiff extension also allows you to configure new diff commands, so
|
|
|
you do not need to type :hg:`extdiff -p kdiff3` always. ::
|
|
|
|
|
|
[extdiff]
|
|
|
# add new command that runs GNU diff(1) in 'context diff' mode
|
|
|
cdiff = gdiff -Nprc5
|
|
|
## or the old way:
|
|
|
#cmd.cdiff = gdiff
|
|
|
#opts.cdiff = -Nprc5
|
|
|
|
|
|
# add new command called meld, runs meld (no need to name twice). If
|
|
|
# the meld executable is not available, the meld tool in [merge-tools]
|
|
|
# will be used, if available
|
|
|
meld =
|
|
|
|
|
|
# add new command called vimdiff, runs gvimdiff with DirDiff plugin
|
|
|
# (see http://www.vim.org/scripts/script.php?script_id=102) Non
|
|
|
# English user, be sure to put "let g:DirDiffDynamicDiffText = 1" in
|
|
|
# your .vimrc
|
|
|
vimdiff = gvim -f "+next" \\
|
|
|
"+execute 'DirDiff' fnameescape(argv(0)) fnameescape(argv(1))"
|
|
|
|
|
|
Tool arguments can include variables that are expanded at runtime::
|
|
|
|
|
|
$parent1, $plabel1 - filename, descriptive label of first parent
|
|
|
$child, $clabel - filename, descriptive label of child revision
|
|
|
$parent2, $plabel2 - filename, descriptive label of second parent
|
|
|
$root - repository root
|
|
|
$parent is an alias for $parent1.
|
|
|
|
|
|
The extdiff extension will look in your [diff-tools] and [merge-tools]
|
|
|
sections for diff tool arguments, when none are specified in [extdiff].
|
|
|
|
|
|
::
|
|
|
|
|
|
[extdiff]
|
|
|
kdiff3 =
|
|
|
|
|
|
[diff-tools]
|
|
|
kdiff3.diffargs=--L1 '$plabel1' --L2 '$clabel' $parent $child
|
|
|
|
|
|
You can use -I/-X and list of file or directory names like normal
|
|
|
:hg:`diff` command. The extdiff extension makes snapshots of only
|
|
|
needed files, so running the external diff program will actually be
|
|
|
pretty fast (at least faster than having to compare the entire tree).
|
|
|
'''
|
|
|
|
|
|
from __future__ import absolute_import
|
|
|
|
|
|
import os
|
|
|
import re
|
|
|
import shlex
|
|
|
import shutil
|
|
|
import tempfile
|
|
|
from mercurial.i18n import _
|
|
|
from mercurial.node import (
|
|
|
nullid,
|
|
|
short,
|
|
|
)
|
|
|
from mercurial import (
|
|
|
archival,
|
|
|
cmdutil,
|
|
|
commands,
|
|
|
encoding,
|
|
|
error,
|
|
|
filemerge,
|
|
|
scmutil,
|
|
|
util,
|
|
|
)
|
|
|
|
|
|
cmdtable = {}
|
|
|
command = cmdutil.command(cmdtable)
|
|
|
# Note for extension authors: ONLY specify testedwith = 'internal' for
|
|
|
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
|
|
|
# be specifying the version(s) of Mercurial they are tested with, or
|
|
|
# leave the attribute unspecified.
|
|
|
testedwith = 'internal'
|
|
|
|
|
|
def snapshot(ui, repo, files, node, tmproot, listsubrepos):
|
|
|
'''snapshot files as of some revision
|
|
|
if not using snapshot, -I/-X does not work and recursive diff
|
|
|
in tools like kdiff3 and meld displays too many files.'''
|
|
|
dirname = os.path.basename(repo.root)
|
|
|
if dirname == "":
|
|
|
dirname = "root"
|
|
|
if node is not None:
|
|
|
dirname = '%s.%s' % (dirname, short(node))
|
|
|
base = os.path.join(tmproot, dirname)
|
|
|
os.mkdir(base)
|
|
|
fns_and_mtime = []
|
|
|
|
|
|
if node is not None:
|
|
|
ui.note(_('making snapshot of %d files from rev %s\n') %
|
|
|
(len(files), short(node)))
|
|
|
else:
|
|
|
ui.note(_('making snapshot of %d files from working directory\n') %
|
|
|
(len(files)))
|
|
|
|
|
|
if files:
|
|
|
repo.ui.setconfig("ui", "archivemeta", False)
|
|
|
|
|
|
archival.archive(repo, base, node, 'files',
|
|
|
matchfn=scmutil.matchfiles(repo, files),
|
|
|
subrepos=listsubrepos)
|
|
|
|
|
|
for fn in sorted(files):
|
|
|
wfn = util.pconvert(fn)
|
|
|
ui.note(' %s\n' % wfn)
|
|
|
|
|
|
if node is None:
|
|
|
dest = os.path.join(base, wfn)
|
|
|
|
|
|
fns_and_mtime.append((dest, repo.wjoin(fn),
|
|
|
os.lstat(dest).st_mtime))
|
|
|
return dirname, fns_and_mtime
|
|
|
|
|
|
def dodiff(ui, repo, cmdline, pats, opts):
|
|
|
'''Do the actual diff:
|
|
|
|
|
|
- copy to a temp structure if diffing 2 internal revisions
|
|
|
- copy to a temp structure if diffing working revision with
|
|
|
another one and more than 1 file is changed
|
|
|
- just invoke the diff for a single file in the working dir
|
|
|
'''
|
|
|
|
|
|
revs = opts.get('rev')
|
|
|
change = opts.get('change')
|
|
|
do3way = '$parent2' in cmdline
|
|
|
|
|
|
if revs and change:
|
|
|
msg = _('cannot specify --rev and --change at the same time')
|
|
|
raise error.Abort(msg)
|
|
|
elif change:
|
|
|
node2 = scmutil.revsingle(repo, change, None).node()
|
|
|
node1a, node1b = repo.changelog.parents(node2)
|
|
|
else:
|
|
|
node1a, node2 = scmutil.revpair(repo, revs)
|
|
|
if not revs:
|
|
|
node1b = repo.dirstate.p2()
|
|
|
else:
|
|
|
node1b = nullid
|
|
|
|
|
|
# Disable 3-way merge if there is only one parent
|
|
|
if do3way:
|
|
|
if node1b == nullid:
|
|
|
do3way = False
|
|
|
|
|
|
subrepos=opts.get('subrepos')
|
|
|
|
|
|
matcher = scmutil.match(repo[node2], pats, opts)
|
|
|
|
|
|
if opts.get('patch'):
|
|
|
if subrepos:
|
|
|
raise error.Abort(_('--patch cannot be used with --subrepos'))
|
|
|
if node2 is None:
|
|
|
raise error.Abort(_('--patch requires two revisions'))
|
|
|
else:
|
|
|
mod_a, add_a, rem_a = map(set, repo.status(node1a, node2, matcher,
|
|
|
listsubrepos=subrepos)[:3])
|
|
|
if do3way:
|
|
|
mod_b, add_b, rem_b = map(set,
|
|
|
repo.status(node1b, node2, matcher,
|
|
|
listsubrepos=subrepos)[:3])
|
|
|
else:
|
|
|
mod_b, add_b, rem_b = set(), set(), set()
|
|
|
modadd = mod_a | add_a | mod_b | add_b
|
|
|
common = modadd | rem_a | rem_b
|
|
|
if not common:
|
|
|
return 0
|
|
|
|
|
|
tmproot = tempfile.mkdtemp(prefix='extdiff.')
|
|
|
try:
|
|
|
if not opts.get('patch'):
|
|
|
# Always make a copy of node1a (and node1b, if applicable)
|
|
|
dir1a_files = mod_a | rem_a | ((mod_b | add_b) - add_a)
|
|
|
dir1a = snapshot(ui, repo, dir1a_files, node1a, tmproot,
|
|
|
subrepos)[0]
|
|
|
rev1a = '@%d' % repo[node1a].rev()
|
|
|
if do3way:
|
|
|
dir1b_files = mod_b | rem_b | ((mod_a | add_a) - add_b)
|
|
|
dir1b = snapshot(ui, repo, dir1b_files, node1b, tmproot,
|
|
|
subrepos)[0]
|
|
|
rev1b = '@%d' % repo[node1b].rev()
|
|
|
else:
|
|
|
dir1b = None
|
|
|
rev1b = ''
|
|
|
|
|
|
fns_and_mtime = []
|
|
|
|
|
|
# If node2 in not the wc or there is >1 change, copy it
|
|
|
dir2root = ''
|
|
|
rev2 = ''
|
|
|
if node2:
|
|
|
dir2 = snapshot(ui, repo, modadd, node2, tmproot, subrepos)[0]
|
|
|
rev2 = '@%d' % repo[node2].rev()
|
|
|
elif len(common) > 1:
|
|
|
#we only actually need to get the files to copy back to
|
|
|
#the working dir in this case (because the other cases
|
|
|
#are: diffing 2 revisions or single file -- in which case
|
|
|
#the file is already directly passed to the diff tool).
|
|
|
dir2, fns_and_mtime = snapshot(ui, repo, modadd, None, tmproot,
|
|
|
subrepos)
|
|
|
else:
|
|
|
# This lets the diff tool open the changed file directly
|
|
|
dir2 = ''
|
|
|
dir2root = repo.root
|
|
|
|
|
|
label1a = rev1a
|
|
|
label1b = rev1b
|
|
|
label2 = rev2
|
|
|
|
|
|
# If only one change, diff the files instead of the directories
|
|
|
# Handle bogus modifies correctly by checking if the files exist
|
|
|
if len(common) == 1:
|
|
|
common_file = util.localpath(common.pop())
|
|
|
dir1a = os.path.join(tmproot, dir1a, common_file)
|
|
|
label1a = common_file + rev1a
|
|
|
if not os.path.isfile(dir1a):
|
|
|
dir1a = os.devnull
|
|
|
if do3way:
|
|
|
dir1b = os.path.join(tmproot, dir1b, common_file)
|
|
|
label1b = common_file + rev1b
|
|
|
if not os.path.isfile(dir1b):
|
|
|
dir1b = os.devnull
|
|
|
dir2 = os.path.join(dir2root, dir2, common_file)
|
|
|
label2 = common_file + rev2
|
|
|
else:
|
|
|
template = 'hg-%h.patch'
|
|
|
cmdutil.export(repo, [repo[node1a].rev(), repo[node2].rev()],
|
|
|
template=repo.vfs.reljoin(tmproot, template),
|
|
|
match=matcher)
|
|
|
label1a = cmdutil.makefilename(repo, template, node1a)
|
|
|
label2 = cmdutil.makefilename(repo, template, node2)
|
|
|
dir1a = repo.vfs.reljoin(tmproot, label1a)
|
|
|
dir2 = repo.vfs.reljoin(tmproot, label2)
|
|
|
dir1b = None
|
|
|
label1b = None
|
|
|
fns_and_mtime = []
|
|
|
|
|
|
# Function to quote file/dir names in the argument string.
|
|
|
# When not operating in 3-way mode, an empty string is
|
|
|
# returned for parent2
|
|
|
replace = {'parent': dir1a, 'parent1': dir1a, 'parent2': dir1b,
|
|
|
'plabel1': label1a, 'plabel2': label1b,
|
|
|
'clabel': label2, 'child': dir2,
|
|
|
'root': repo.root}
|
|
|
def quote(match):
|
|
|
pre = match.group(2)
|
|
|
key = match.group(3)
|
|
|
if not do3way and key == 'parent2':
|
|
|
return pre
|
|
|
return pre + util.shellquote(replace[key])
|
|
|
|
|
|
# Match parent2 first, so 'parent1?' will match both parent1 and parent
|
|
|
regex = (r'''(['"]?)([^\s'"$]*)'''
|
|
|
r'\$(parent2|parent1?|child|plabel1|plabel2|clabel|root)\1')
|
|
|
if not do3way and not re.search(regex, cmdline):
|
|
|
cmdline += ' $parent1 $child'
|
|
|
cmdline = re.sub(regex, quote, cmdline)
|
|
|
|
|
|
ui.debug('running %r in %s\n' % (cmdline, tmproot))
|
|
|
ui.system(cmdline, cwd=tmproot)
|
|
|
|
|
|
for copy_fn, working_fn, mtime in fns_and_mtime:
|
|
|
if os.lstat(copy_fn).st_mtime != mtime:
|
|
|
ui.debug('file changed while diffing. '
|
|
|
'Overwriting: %s (src: %s)\n' % (working_fn, copy_fn))
|
|
|
util.copyfile(copy_fn, working_fn)
|
|
|
|
|
|
return 1
|
|
|
finally:
|
|
|
ui.note(_('cleaning up temp directory\n'))
|
|
|
shutil.rmtree(tmproot)
|
|
|
|
|
|
extdiffopts = [
|
|
|
('o', 'option', [],
|
|
|
_('pass option to comparison program'), _('OPT')),
|
|
|
('r', 'rev', [], _('revision'), _('REV')),
|
|
|
('c', 'change', '', _('change made by revision'), _('REV')),
|
|
|
('', 'patch', None, _('compare patches for two revisions'))
|
|
|
] + commands.walkopts + commands.subrepoopts
|
|
|
|
|
|
@command('extdiff',
|
|
|
[('p', 'program', '', _('comparison program to run'), _('CMD')),
|
|
|
] + extdiffopts,
|
|
|
_('hg extdiff [OPT]... [FILE]...'),
|
|
|
inferrepo=True)
|
|
|
def extdiff(ui, repo, *pats, **opts):
|
|
|
'''use external program to diff repository (or selected files)
|
|
|
|
|
|
Show differences between revisions for the specified files, using
|
|
|
an external program. The default program used is diff, with
|
|
|
default options "-Npru".
|
|
|
|
|
|
To select a different program, use the -p/--program option. The
|
|
|
program will be passed the names of two directories to compare. To
|
|
|
pass additional options to the program, use -o/--option. These
|
|
|
will be passed before the names of the directories to compare.
|
|
|
|
|
|
When two revision arguments are given, then changes are shown
|
|
|
between those revisions. If only one revision is specified then
|
|
|
that revision is compared to the working directory, and, when no
|
|
|
revisions are specified, the working directory files are compared
|
|
|
to its parent.'''
|
|
|
program = opts.get('program')
|
|
|
option = opts.get('option')
|
|
|
if not program:
|
|
|
program = 'diff'
|
|
|
option = option or ['-Npru']
|
|
|
cmdline = ' '.join(map(util.shellquote, [program] + option))
|
|
|
return dodiff(ui, repo, cmdline, pats, opts)
|
|
|
|
|
|
def uisetup(ui):
|
|
|
for cmd, path in ui.configitems('extdiff'):
|
|
|
path = util.expandpath(path)
|
|
|
if cmd.startswith('cmd.'):
|
|
|
cmd = cmd[4:]
|
|
|
if not path:
|
|
|
path = util.findexe(cmd)
|
|
|
if path is None:
|
|
|
path = filemerge.findexternaltool(ui, cmd) or cmd
|
|
|
diffopts = ui.config('extdiff', 'opts.' + cmd, '')
|
|
|
cmdline = util.shellquote(path)
|
|
|
if diffopts:
|
|
|
cmdline += ' ' + diffopts
|
|
|
elif cmd.startswith('opts.'):
|
|
|
continue
|
|
|
else:
|
|
|
if path:
|
|
|
# case "cmd = path opts"
|
|
|
cmdline = path
|
|
|
diffopts = len(shlex.split(cmdline)) > 1
|
|
|
else:
|
|
|
# case "cmd ="
|
|
|
path = util.findexe(cmd)
|
|
|
if path is None:
|
|
|
path = filemerge.findexternaltool(ui, cmd) or cmd
|
|
|
cmdline = util.shellquote(path)
|
|
|
diffopts = False
|
|
|
# look for diff arguments in [diff-tools] then [merge-tools]
|
|
|
if not diffopts:
|
|
|
args = ui.config('diff-tools', cmd+'.diffargs') or \
|
|
|
ui.config('merge-tools', cmd+'.diffargs')
|
|
|
if args:
|
|
|
cmdline += ' ' + args
|
|
|
def save(cmdline):
|
|
|
'''use closure to save diff command to use'''
|
|
|
def mydiff(ui, repo, *pats, **opts):
|
|
|
options = ' '.join(map(util.shellquote, opts['option']))
|
|
|
if options:
|
|
|
options = ' ' + options
|
|
|
return dodiff(ui, repo, cmdline + options, pats, opts)
|
|
|
doc = _('''\
|
|
|
use %(path)s to diff repository (or selected files)
|
|
|
|
|
|
Show differences between revisions for the specified files, using
|
|
|
the %(path)s program.
|
|
|
|
|
|
When two revision arguments are given, then changes are shown
|
|
|
between those revisions. If only one revision is specified then
|
|
|
that revision is compared to the working directory, and, when no
|
|
|
revisions are specified, the working directory files are compared
|
|
|
to its parent.\
|
|
|
''') % {'path': util.uirepr(path)}
|
|
|
|
|
|
# We must translate the docstring right away since it is
|
|
|
# used as a format string. The string will unfortunately
|
|
|
# be translated again in commands.helpcmd and this will
|
|
|
# fail when the docstring contains non-ASCII characters.
|
|
|
# Decoding the string to a Unicode string here (using the
|
|
|
# right encoding) prevents that.
|
|
|
mydiff.__doc__ = doc.decode(encoding.encoding)
|
|
|
return mydiff
|
|
|
command(cmd, extdiffopts[:], _('hg %s [OPTION]... [FILE]...') % cmd,
|
|
|
inferrepo=True)(save(cmdline))
|
|
|
|
