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bisect--helper: is_expected_rev & check_expected_revs shell function in C

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Reimplement `is_expected_rev` & `check_expected_revs` shell function in
C and add a `--check-expected-revs` subcommand to `git bisect--helper` to
call it from git-bisect.sh .

Using `--check-expected-revs` subcommand is a temporary measure to port
shell functions to C so as to use the existing test suite. As more
functions are ported, this subcommand would be retired but its
implementation will be called by some other method.

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Mentored-by: Lars Schneider <larsxschneider@gmail.com>
Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Pranit Bauva 2017-09-29 06:49:40 +00:00 committed by Junio C Hamano
parent ba7eafe146
commit b903674b35
2 changed files with 35 additions and 19 deletions
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34
builtin/bisect--helper.c
View File

@ -5,6 +5,8 @@
#include "refs.h"
static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS")
static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV")
static GIT_PATH_FUNC(git_path_bisect_ancestors_ok, "BISECT_ANCESTORS_OK")
static const char * const git_bisect_helper_usage[] = {
N_("git bisect--helper --next-all [--no-checkout]"),
@ -80,12 +82,37 @@ static int write_terms(const char *bad, const char *good)
return (res < 0) ? -1 : 0;
}
static int is_expected_rev(const char *expected_hex)
{
struct strbuf actual_hex = STRBUF_INIT;
int res = 0;
if (strbuf_read_file(&actual_hex, git_path_bisect_expected_rev(), 0) >= 40) {
strbuf_trim(&actual_hex);
res = !strcmp(actual_hex.buf, expected_hex);
}
strbuf_release(&actual_hex);
return res;
}
static void check_expected_revs(const char **revs, int rev_nr)
{
int i;
for (i = 0; i < rev_nr; i++) {
if (!is_expected_rev(revs[i])) {
unlink_or_warn(git_path_bisect_ancestors_ok());
unlink_or_warn(git_path_bisect_expected_rev());
}
}
}
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
{
enum {
NEXT_ALL = 1,
WRITE_TERMS,
BISECT_CLEAN_STATE
BISECT_CLEAN_STATE,
CHECK_EXPECTED_REVS
} cmdmode = 0;
int no_checkout = 0;
struct option options[] = {
@ -95,6 +122,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
N_("write the terms to .git/BISECT_TERMS"), WRITE_TERMS),
OPT_CMDMODE(0, "bisect-clean-state", &cmdmode,
N_("cleanup the bisection state"), BISECT_CLEAN_STATE),
OPT_CMDMODE(0, "check-expected-revs", &cmdmode,
N_("check for expected revs"), CHECK_EXPECTED_REVS),
OPT_BOOL(0, "no-checkout", &no_checkout,
N_("update BISECT_HEAD instead of checking out the current commit")),
OPT_END()
@ -117,6 +146,9 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
if (argc != 0)
return error(_("--bisect-clean-state requires no arguments"));
return bisect_clean_state();
case CHECK_EXPECTED_REVS:
check_expected_revs(argv, argc);
return 0;
default:
return error("BUG: unknown subcommand '%d'", cmdmode);
}

20
git-bisect.sh
View File

@ -237,22 +237,6 @@ bisect_write() {
test -n "$nolog" || echo "git bisect $state $rev" >>"$GIT_DIR/BISECT_LOG"
}
is_expected_rev() {
test -f "$GIT_DIR/BISECT_EXPECTED_REV" &&
test "$1" = $(cat "$GIT_DIR/BISECT_EXPECTED_REV")
}
check_expected_revs() {
for _rev in "$@"; do
if ! is_expected_rev "$_rev"
then
rm -f "$GIT_DIR/BISECT_ANCESTORS_OK"
rm -f "$GIT_DIR/BISECT_EXPECTED_REV"
return
fi
done
}
bisect_skip() {
all=''
for arg in "$@"
@ -280,7 +264,7 @@ bisect_state() {
rev=$(git rev-parse --verify "$bisected_head") ||
die "$(eval_gettext "Bad rev input: \$bisected_head")"
bisect_write "$state" "$rev"
check_expected_revs "$rev" ;;
git bisect--helper --check-expected-revs "$rev" ;;
2,"$TERM_BAD"|*,"$TERM_GOOD"|*,skip)
shift
hash_list=''
@ -294,7 +278,7 @@ bisect_state() {
do
bisect_write "$state" "$rev"
done
check_expected_revs $hash_list ;;
git bisect--helper --check-expected-revs $hash_list ;;
*,"$TERM_BAD")
die "$(eval_gettext "'git bisect \$TERM_BAD' can take only one argument.")" ;;
*)