From patchwork Fri Jul 17 10:54:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Miriam R." X-Patchwork-Id: 11669807 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 83C6D138C for ; Fri, 17 Jul 2020 10:54:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6325B2076A for ; Fri, 17 Jul 2020 10:54:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="YxvKBCn8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726656AbgGQKyx (ORCPT ); Fri, 17 Jul 2020 06:54:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726619AbgGQKyq (ORCPT ); Fri, 17 Jul 2020 06:54:46 -0400 Received: from mail-wm1-x341.google.com (mail-wm1-x341.google.com [IPv6:2a00:1450:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 005E8C061755 for ; Fri, 17 Jul 2020 03:54:45 -0700 (PDT) Received: by mail-wm1-x341.google.com with SMTP id a6so7011567wmm.0 for ; Fri, 17 Jul 2020 03:54:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dPGXp2ryD4GzRgkCAFTvUG/JRc+vz1jNmIc9OkBJH1E=; b=YxvKBCn8AjtZ2QHUJMBihGsx4MjQEWzQ94Pxiaoeuu1KhmJpIEiMFdEw7WcVWQJLCz /ttTToBj+mGsg1Z8us3n0UX7vfCwYNA4Q28Ldgwohekat7425o+mE0Y6nApWdEqY9W4j wpLiUaxGs0QmYuvJJ141obTjC9RU8bqDgo+NS7P37BlYXr5hKHxacw0iyliNPGb3zwYr XzGB0wbwpBxMAnq6XqyKKoY93/nebwlzlJhA8qdFfASn6xYxPriTywg5z2vnMFZhnmNQ EpfCfIJ6rbZg0ck/fifxk7tL+UomhoSREOE+dgkCrCjlbVmBB3gdaowTReXk19xfQDVA AnXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=dPGXp2ryD4GzRgkCAFTvUG/JRc+vz1jNmIc9OkBJH1E=; b=adMj3kfncoDsBRkRAIiHoeC/u8UoKSe3lxamJVkBaYUk3Bu42uDBDnv1M36i4GxhCR g3CqlS0pNHD6ykex6rcrraKvxlq19LXWdDwM3bc7NFMItAboUCNcOettitnJu1I3Wwq6 2Ibpjn6A9KFo47WDamEXhKtLI9tlUN2rOxeOJj+KvD0iGbpX3j14lg3zfTFrFPmezRCq l0+fwcCqJG6wyzj9hdEDfcJDMYpIvh/XBH0rEnMXTZEd5/elqgZzBcQA9izh/r82nIDl 6vE4tqRR8ALvXcHfHgEnB9J5jxe3RIE4spUH7DfsaNIqy6Yfj0xhYm5uUMURX64qiQ7w BTzQ== X-Gm-Message-State: AOAM530iu1/qRcvLjFnpYWpv2RSfQH5EXtlr1SI7gMRCdunTl+K9jNdb ybloLZDPdgDdbGD4wGIVNH5dYA35 X-Google-Smtp-Source: ABdhPJzf9nXi4dVu7ojVyIj811XccT9VSCKZQn8WR4cJzu9zCV469csLZnYFE4al5Izyaigxq4PPUQ== X-Received: by 2002:a1c:4d11:: with SMTP id o17mr8521536wmh.134.1594983284344; Fri, 17 Jul 2020 03:54:44 -0700 (PDT) Received: from localhost.localdomain ([91.242.153.178]) by smtp.gmail.com with ESMTPSA id w14sm13924474wrt.55.2020.07.17.03.54.43 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 17 Jul 2020 03:54:43 -0700 (PDT) From: Miriam Rubio To: git@vger.kernel.org Cc: Pranit Bauva , Lars Schneider , Christian Couder , Johannes Schindelin , Tanushree Tumane , Miriam Rubio Subject: [PATCH v5 10/13] bisect--helper: reimplement `bisect_state` & `bisect_head` shell functions in C Date: Fri, 17 Jul 2020 12:54:03 +0200 Message-Id: <20200717105406.82226-11-mirucam@gmail.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200717105406.82226-1-mirucam@gmail.com> References: <20200717105406.82226-1-mirucam@gmail.com> MIME-Version: 1.0 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Pranit Bauva Reimplement the `bisect_state()` shell functions in C and also add a subcommand `--bisect-state` to `git-bisect--helper` to call them from git-bisect.sh . Using `--bisect-state` subcommand is a temporary measure to port shell function to C so as to use the existing test suite. As more functions are ported, this subcommand will be retired and will be called by some other methods. `bisect_head()` is only called from `bisect_state()`, thus it is not required to introduce another subcommand. Mentored-by: Lars Schneider Mentored-by: Christian Couder Mentored-by: Johannes Schindelin Signed-off-by: Pranit Bauva Signed-off-by: Tanushree Tumane Signed-off-by: Miriam Rubio --- builtin/bisect--helper.c | 78 +++++++++++++++++++++++++++++++++++++++- git-bisect.sh | 55 +++------------------------- 2 files changed, 81 insertions(+), 52 deletions(-) diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c index fc6bf36e42..7369605e4c 100644 --- a/builtin/bisect--helper.c +++ b/builtin/bisect--helper.c @@ -31,6 +31,8 @@ static const char * const git_bisect_helper_usage[] = { N_("git bisect--helper --bisect-next"), N_("git bisect--helper --bisect-auto-next"), N_("git bisect--helper --bisect-autostart"), + N_("git bisect--helper --bisect-state (bad|new) []"), + N_("git bisect--helper --bisect-state (good|old) [...]"), NULL }; @@ -857,6 +859,72 @@ static int bisect_autostart(struct bisect_terms *terms) return res; } +static enum bisect_error bisect_state(struct bisect_terms *terms, const char **argv, + int argc) +{ + const char *state; + int i, verify_expected = 1; + struct object_id oid, expected; + struct strbuf buf = STRBUF_INIT; + struct oid_array revs = OID_ARRAY_INIT; + + if (!argc) + return error(_("Please call `--bisect-state` with at least one argument")); + + state = argv[0]; + if (check_and_set_terms(terms, state) || + !one_of(state, terms->term_good, terms->term_bad, "skip", NULL)) + return BISECT_FAILED; + + argv++; + argc--; + if (argc > 1 && !strcmp(state, terms->term_bad)) + return error(_("'git bisect %s' can take only one argument."), terms->term_bad); + + if (argc == 0) { + enum get_oid_result res_head = get_oid("BISECT_HEAD", &oid); + if (res_head == MISSING_OBJECT) + res_head = get_oid("HEAD", &oid); + if (res_head) { + error(_("Bad bisect_head rev input")); + return BISECT_FAILED; + } + oid_array_append(&revs, &oid); + } + + /* + * All input revs must be checked before executing bisect_write() + * to discard junk revs. + */ + + for (; argc; argc--, argv++) { + if (get_oid(*argv, &oid)){ + error(_("Bad rev input: %s"), *argv); + return BISECT_FAILED; + } + oid_array_append(&revs, &oid); + } + + if (strbuf_read_file(&buf, git_path_bisect_expected_rev(), 0) < the_hash_algo->hexsz || + get_oid_hex(buf.buf, &expected) < 0) + verify_expected = 0; /* Ignore invalid file contents */ + strbuf_release(&buf); + + for (i = 0; i < revs.nr; i++) { + if (bisect_write(state, oid_to_hex(&revs.oid[i]), terms, 0)) + return BISECT_FAILED; + + if (verify_expected && !oideq(&revs.oid[i], &expected)) { + unlink_or_warn(git_path_bisect_ancestors_ok()); + unlink_or_warn(git_path_bisect_expected_rev()); + verify_expected = 0; + } + } + + oid_array_clear(&revs); + return bisect_auto_next(terms, NULL); +} + int cmd_bisect__helper(int argc, const char **argv, const char *prefix) { enum { @@ -870,7 +938,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) BISECT_START, BISECT_NEXT, BISECT_AUTO_NEXT, - BISECT_AUTOSTART + BISECT_AUTOSTART, + BISECT_STATE } cmdmode = 0; int no_checkout = 0, res = 0, nolog = 0; struct option options[] = { @@ -896,6 +965,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) N_("verify the next bisection state then checkout the next bisection commit"), BISECT_AUTO_NEXT), OPT_CMDMODE(0, "bisect-autostart", &cmdmode, N_("start the bisection if it has not yet been started"), BISECT_AUTOSTART), + OPT_CMDMODE(0, "bisect-state", &cmdmode, + N_("mark the state of ref (or refs)"), BISECT_STATE), OPT_BOOL(0, "no-checkout", &no_checkout, N_("update BISECT_HEAD instead of checking out the current commit")), OPT_BOOL(0, "no-log", &nolog, @@ -968,6 +1039,11 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) set_terms(&terms, "bad", "good"); res = bisect_autostart(&terms); break; + case BISECT_STATE: + set_terms(&terms, "bad", "good"); + get_terms(&terms); + res = bisect_state(&terms, argv, argc); + break; default: BUG("unknown subcommand %d", (int)cmdmode); } diff --git a/git-bisect.sh b/git-bisect.sh index cfb05c0511..7a8f796251 100755 --- a/git-bisect.sh +++ b/git-bisect.sh @@ -39,16 +39,6 @@ _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40" TERM_BAD=bad TERM_GOOD=good -bisect_head() -{ - if test -f "$GIT_DIR/BISECT_HEAD" - then - echo BISECT_HEAD - else - echo HEAD - fi -} - bisect_skip() { all='' for arg in "$@" @@ -61,43 +51,7 @@ bisect_skip() { esac all="$all $revs" done - eval bisect_state 'skip' $all -} - -bisect_state() { - git bisect--helper --bisect-autostart - state=$1 - git bisect--helper --check-and-set-terms $state $TERM_GOOD $TERM_BAD || exit - get_terms - case "$#,$state" in - 0,*) - die "Please call 'bisect_state' with at least one argument." ;; - 1,"$TERM_BAD"|1,"$TERM_GOOD"|1,skip) - bisected_head=$(bisect_head) - rev=$(git rev-parse --verify "$bisected_head") || - die "$(eval_gettext "Bad rev input: \$bisected_head")" - git bisect--helper --bisect-write "$state" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit - git bisect--helper --check-expected-revs "$rev" ;; - 2,"$TERM_BAD"|*,"$TERM_GOOD"|*,skip) - shift - hash_list='' - for rev in "$@" - do - sha=$(git rev-parse --verify "$rev^{commit}") || - die "$(eval_gettext "Bad rev input: \$rev")" - hash_list="$hash_list $sha" - done - for rev in $hash_list - do - git bisect--helper --bisect-write "$state" "$rev" "$TERM_GOOD" "$TERM_BAD" || exit - done - git bisect--helper --check-expected-revs $hash_list ;; - *,"$TERM_BAD") - die "$(eval_gettext "'git bisect \$TERM_BAD' can take only one argument.")" ;; - *) - usage ;; - esac - git bisect--helper --bisect-auto-next + eval git bisect--helper --bisect-state 'skip' $all } bisect_visualize() { @@ -187,8 +141,7 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2 state="$TERM_GOOD" fi - # We have to use a subshell because "bisect_state" can exit. - ( bisect_state $state >"$GIT_DIR/BISECT_RUN" ) + git bisect--helper --bisect-state $state >"$GIT_DIR/BISECT_RUN" res=$? cat "$GIT_DIR/BISECT_RUN" @@ -203,7 +156,7 @@ exit code \$res from '\$command' is < 0 or >= 128" >&2 if [ $res -ne 0 ] then eval_gettextln "bisect run failed: -'bisect_state \$state' exited with error code \$res" >&2 +'git bisect--helper --bisect-state \$state' exited with error code \$res" >&2 exit $res fi @@ -244,7 +197,7 @@ case "$#" in start) git bisect--helper --bisect-start "$@" ;; bad|good|new|old|"$TERM_BAD"|"$TERM_GOOD") - bisect_state "$cmd" "$@" ;; + git bisect--helper --bisect-state "$cmd" "$@" ;; skip) bisect_skip "$@" ;; next)