comparison mercurial/revset.py @ 34854:39b094e4ae2c

revset: extract a parsefollowlinespattern helper function

We'll need the same logic in forthcoming changeset to handle --line-range
option in 'hg log' command.
The function lives in scmutil.py (rather than util.py) as it uses match and
pathutil modules.

34853:962f7df21a73

                # i18n: "followlines" is a keyword
                _("followlines expects exactly one revision"))
        rev = revs.last()

    pat = getstring(args['file'], _("followlines requires a pattern"))
    if not matchmod.patkind(pat):
        fname = pathutil.canonpath(repo.root, repo.getcwd(), pat)
    else:
        m = matchmod.match(repo.root, repo.getcwd(), [pat], ctx=repo[rev])
        files = [f for f in repo[rev] if m(f)]
        if len(files) != 1:
            # i18n: "followlines" is a keyword
            raise error.ParseError(_("followlines expects exactly one file"))
        fname = files[0]

    # i18n: "followlines" is a keyword
    lr = getrange(args['lines'][0], _("followlines expects a line range"))
    fromline, toline = [getinteger(a, _("line range bounds must be integers"))
                        for a in lr]
    fromline, toline = util.processlinerange(fromline, toline)

34854:39b094e4ae2c

                # i18n: "followlines" is a keyword
                _("followlines expects exactly one revision"))
        rev = revs.last()

    pat = getstring(args['file'], _("followlines requires a pattern"))
    # i18n: "followlines" is a keyword
    msg = _("followlines expects exactly one file")
    fname = scmutil.parsefollowlinespattern(repo, rev, pat, msg)
    # i18n: "followlines" is a keyword
    lr = getrange(args['lines'][0], _("followlines expects a line range"))
    fromline, toline = [getinteger(a, _("line range bounds must be integers"))
                        for a in lr]
    fromline, toline = util.processlinerange(fromline, toline)