comparison mercurial/patch.py @ 24417:f2e1e097cda1

patch.diff: add support for diffs relative to a subdirectory

For now this implementation is pretty naive -- it filters out files right
before passing them into trydiff. In upcoming patches we'll add some more
smarts.

24416:f07047a506d1

        buildopts['noprefix'] = get('noprefix', forceplain=False)

    return mdiff.diffopts(**buildopts)

def diff(repo, node1=None, node2=None, match=None, changes=None, opts=None,
         losedatafn=None, prefix=''):
    '''yields diff of changes to files between two nodes, or node and
    working directory.

    if node1 is None, use first dirstate parent instead.
    if node2 is None, compare node1 with working directory.

    to None, patches will always be upgraded to git format when
    necessary.

    prefix is a filename prefix that is prepended to all filenames on
    display (used for subrepos).
    '''

    if opts is None:
        opts = mdiff.defaultopts

    if not node1 and not node2:

    copy = {}
    if opts.git or opts.upgrade:
        copy = copies.pathcopies(ctx1, ctx2)

    def difffn(opts, losedata):
        return trydiff(repo, revs, ctx1, ctx2, modified, added, removed,
                       copy, getfilectx, opts, losedata, prefix, '')
    if opts.upgrade and not opts.git:
        try:
            def losedata(fn):
                if not losedatafn or not losedatafn(fn=fn):
                    raise GitDiffRequired

24417:f2e1e097cda1

        buildopts['noprefix'] = get('noprefix', forceplain=False)

    return mdiff.diffopts(**buildopts)

def diff(repo, node1=None, node2=None, match=None, changes=None, opts=None,
         losedatafn=None, prefix='', relroot=''):
    '''yields diff of changes to files between two nodes, or node and
    working directory.

    if node1 is None, use first dirstate parent instead.
    if node2 is None, compare node1 with working directory.

    to None, patches will always be upgraded to git format when
    necessary.

    prefix is a filename prefix that is prepended to all filenames on
    display (used for subrepos).

    relroot, if not empty, must be normalized with a trailing /. Any match
    patterns that fall outside it will be ignored.'''

    if opts is None:
        opts = mdiff.defaultopts

    if not node1 and not node2:

    copy = {}
    if opts.git or opts.upgrade:
        copy = copies.pathcopies(ctx1, ctx2)

    if relroot is not None:
        # XXX this would ideally be done in the matcher, but that is generally
        # meant to 'or' patterns, not 'and' them. In this case we need to 'and'
        # all the patterns from the matcher with relroot.
        def filterrel(l):
            return [f for f in l if f.startswith(relroot)]
        modified = filterrel(modified)
        added = filterrel(added)
        removed = filterrel(removed)
        # filter out copies where either side isn't inside the relative root
        copy = dict(((dst, src) for (dst, src) in copy.iteritems()
                     if dst.startswith(relroot)
                     and src.startswith(relroot)))

    def difffn(opts, losedata):
        return trydiff(repo, revs, ctx1, ctx2, modified, added, removed,
                       copy, getfilectx, opts, losedata, prefix, relroot)
    if opts.upgrade and not opts.git:
        try:
            def losedata(fn):
                if not losedatafn or not losedatafn(fn=fn):
                    raise GitDiffRequired