From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS53758 23.128.96.0/24 X-Spam-Status: No, score=-3.8 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by dcvr.yhbt.net (Postfix) with ESMTP id 9FF551FA12 for ; Mon, 26 Apr 2021 17:48:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237545AbhDZRs4 (ORCPT ); Mon, 26 Apr 2021 13:48:56 -0400 Received: from mav.lukeshu.com ([104.207.138.63]:39098 "EHLO mav.lukeshu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237624AbhDZRsg (ORCPT ); Mon, 26 Apr 2021 13:48:36 -0400 Received: from lukeshu-dw-thinkpad (unknown [IPv6:2601:281:8200:26:4e34:88ff:fe48:5521]) by mav.lukeshu.com (Postfix) with ESMTPSA id 5F3CA80590; Mon, 26 Apr 2021 13:47:54 -0400 (EDT) From: Luke Shumaker To: git@vger.kernel.org Cc: Avery Pennarun , Charles Bailey , Danny Lin , "David A . Greene" , David Aguilar , Jakub Suder , James Denholm , Jeff King , Jonathan Nieder , Junio C Hamano , =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= , Roger L Strain , Techlive Zheng , Eric Sunshine , =?UTF-8?q?=C3=86var=20Arnfj=C3=B6r=C3=B0=20Bjarmason?= , Luke Shumaker Subject: [PATCH v2 21/30] subtree: parse revs in individual cmd_ functions Date: Mon, 26 Apr 2021 11:45:16 -0600 Message-Id: <20210426174525.3937858-22-lukeshu@lukeshu.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210426174525.3937858-1-lukeshu@lukeshu.com> References: <20210423194230.1388945-1-lukeshu@lukeshu.com> <20210426174525.3937858-1-lukeshu@lukeshu.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Luke Shumaker The main argument parser goes ahead and tries to parse revs to make things simpler for the sub-command implementations. But, it includes enough special cases for different sub-commands. And it's difficult having having to think about "is this info coming from an argument, or a global variable?". So the main argument parser's effort to make things "simpler" ends up just making it more confusing and complicated. Begone with the 'revs' global variable; parse 'rev=$(...)' as needed in individual 'cmd_*' functions. Begone with the 'default' global variable. Its would-be value is knowable just from which function we're in. Begone with the 'ensure_single_rev' function. Its functionality can be achieved by passing '--verify' to 'git rev-parse'. Signed-off-by: Luke Shumaker --- contrib/subtree/git-subtree.sh | 62 +++++++++++++--------------------- 1 file changed, 24 insertions(+), 38 deletions(-) diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh index ee7fda3672..0df8d1b7d4 100755 --- a/contrib/subtree/git-subtree.sh +++ b/contrib/subtree/git-subtree.sh @@ -76,13 +76,6 @@ assert () { fi } -ensure_single_rev () { - if test $# -ne 1 - then - die "You must provide exactly one revision. Got: '$*'" - fi -} - main () { if test $# -eq 0 then @@ -164,11 +157,8 @@ main () { shift case "$arg_command" in - add|merge|pull) - default= - ;; - split|push) - default="--default HEAD" + add|merge|pull|split|push) + : ;; *) die "Unknown command '$arg_command'" @@ -193,22 +183,8 @@ main () { dir="$(dirname "$arg_prefix/.")" - if test "$arg_command" != "pull" && - test "$arg_command" != "add" && - test "$arg_command" != "push" - then - revs=$(git rev-parse $default --revs-only "$@") || exit $? - dirs=$(git rev-parse --no-revs --no-flags "$@") || exit $? - ensure_single_rev $revs - if test -n "$dirs" - then - die "Error: Use --prefix instead of bare filenames." - fi - fi - debug "command: {$arg_command}" debug "quiet: {$GIT_QUIET}" - debug "revs: {$revs}" debug "dir: {$dir}" debug "opts: {$*}" debug @@ -714,14 +690,13 @@ cmd_add_repository () { repository=$1 refspec=$2 git fetch "$@" || exit $? - revs=FETCH_HEAD - set -- $revs - cmd_add_commit "$@" + cmd_add_commit FETCH_HEAD } cmd_add_commit () { - rev=$(git rev-parse $default --revs-only "$@") || exit $? - ensure_single_rev $rev + # The rev has already been validated by cmd_add(), we just + # need to normalize it. + rev=$(git rev-parse --verify "$1^{commit}") || exit $? debug "Adding $dir as '$rev'..." git read-tree --prefix="$dir" $rev || exit $? @@ -752,6 +727,17 @@ cmd_add_commit () { } cmd_split () { + if test $# -eq 0 + then + rev=$(git rev-parse HEAD) + elif test $# -eq 1 + then + rev=$(git rev-parse -q --verify "$1^{commit}") || + die "'$1' does not refer to a commit" + else + die "You must provide exactly one revision. Got: '$*'" + fi + debug "Splitting $dir..." cache_setup || exit $? @@ -768,12 +754,12 @@ cmd_split () { done || exit $? fi - unrevs="$(find_existing_splits "$dir" "$revs")" || exit $? + unrevs="$(find_existing_splits "$dir" "$rev")" || exit $? # We can't restrict rev-list to only $dir here, because some of our # parents have the $dir contents the root, and those won't match. # (and rev-list --follow doesn't seem to solve this) - grl='git rev-list --topo-order --reverse --parents $revs $unrevs' + grl='git rev-list --topo-order --reverse --parents $rev $unrevs' revmax=$(eval "$grl" | wc -l) revcount=0 createcount=0 @@ -820,8 +806,10 @@ cmd_split () { } cmd_merge () { - rev=$(git rev-parse $default --revs-only "$@") || exit $? - ensure_single_rev $rev + test $# -eq 1 || + die "You must provide exactly one revision. Got: '$*'" + rev=$(git rev-parse -q --verify "$1^{commit}") || + die "'$1' does not refer to a commit" ensure_clean if test -n "$arg_addmerge_squash" @@ -861,9 +849,7 @@ cmd_pull () { ensure_clean ensure_valid_ref_format "$2" git fetch "$@" || exit $? - revs=FETCH_HEAD - set -- $revs - cmd_merge "$@" + cmd_merge FETCH_HEAD } cmd_push () { -- 2.31.1