From: Tanushree Tumane <tanushreetumane@xxxxxxxxx>
Reimplement the `bisect_run()` shell function
in C and also add `--bisect-run` subcommand to
`git bisect--helper` to call it from git-bisect.sh.
Mentored-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
Signed-off-by: Tanushree Tumane <tanushreetumane@xxxxxxxxx>
Signed-off-by: Miriam Rubio <mirucam@xxxxxxxxx>
---
builtin/bisect--helper.c | 102 +++++++++++++++++++++++++++++++++++++++
git-bisect.sh | 62 +-----------------------
2 files changed, 103 insertions(+), 61 deletions(-)
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index 1e118a966a..8d33c809aa 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c
@@ -18,6 +18,7 @@ static GIT_PATH_FUNC(git_path_bisect_log, "BISECT_LOG")
static GIT_PATH_FUNC(git_path_head_name, "head-name")
static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES")
static GIT_PATH_FUNC(git_path_bisect_first_parent, "BISECT_FIRST_PARENT")
+static GIT_PATH_FUNC(git_path_bisect_run, "BISECT_RUN")
static const char * const git_bisect_helper_usage[] = {
N_("git bisect--helper --bisect-reset [<commit>]"),
@@ -31,6 +32,7 @@ static const char * const git_bisect_helper_usage[] = {
N_("git bisect--helper --bisect-replay <filename>"),
N_("git bisect--helper --bisect-skip [(<rev>|<range>)...]"),
N_("git bisect--helper --bisect-visualize"),
+ N_("git bisect--helper --bisect-run <cmd>..."),
NULL
};
@@ -144,6 +146,25 @@ static int append_to_file(const char *path, const char *format, ...)
return res;
}
+static int print_file_to_stdout(const char *path)
+{
+ FILE *fp;
+ char c;
+
+ fp = fopen(path, "r");
+ if (!fp)
+ return error_errno(_("cannot open file '%s' in read mode"), path);
+
+ c = fgetc(fp);
+ while (c != EOF) {
+ printf ("%c", c);
+ c = fgetc(fp);
+ }
+
+ fclose(fp);
+ return 0;
+}
+
static int check_term_format(const char *term, const char *orig_term)
{
int res;
@@ -1075,6 +1096,78 @@ static int bisect_visualize(struct bisect_terms *terms, const char **argv, int a
return res;
}
+static int bisect_run(struct bisect_terms *terms, const char **argv, int argc)
+{
+ int res = BISECT_OK;
+ struct strbuf command = STRBUF_INIT;
+ struct strvec args = STRVEC_INIT;
+ struct strvec run_args = STRVEC_INIT;
+ const char *new_state;
+ int temporary_stdout_fd, saved_stdout;
+
+ if (bisect_next_check(terms, NULL))
+ return BISECT_FAILED;
+
+ if (argc)
+ sq_quote_argv(&command, argv);
+ else {
+ error(_("bisect run failed: no command provided."));
+ return BISECT_FAILED;
+ }
+
+ strvec_push(&run_args, command.buf);
+
+ while (1) {
+ strvec_clear(&args);
+
+ printf(_("running %s\n"), command.buf);
+ res = run_command_v_opt(run_args.v, RUN_USING_SHELL);
+
+ if (res < 0 || 128 <= res) {
+ error(_("bisect run failed: exit code %d from"
+ " '%s' is < 0 or >= 128"), res, command.buf);
+ strbuf_release(&command);
+ return res;
+ }
+
+ if (res == 125)
+ new_state = "skip";
+ else new_state = res > 0 ? terms->term_bad : terms->term_good;
+
+ temporary_stdout_fd = open(git_path_bisect_run(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
+ saved_stdout = dup(1);
+ dup2(temporary_stdout_fd, 1);
+
+ res = bisect_state(terms, &new_state, 1);
+
+ dup2(saved_stdout, 1);
+ close(saved_stdout);
+ close(temporary_stdout_fd);
+
+ print_file_to_stdout(git_path_bisect_run());
+
+ if (res == BISECT_ONLY_SKIPPED_LEFT)
+ error(_("bisect run cannot continue any more"));
+ else if (res == BISECT_INTERNAL_SUCCESS_MERGE_BASE) {
+ printf(_("bisect run success"));
+ res = BISECT_OK;
+ } else if (res == BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND) {
+ printf(_("bisect found first bad commit"));
+ res = BISECT_OK;
+ } else if (res) {
+ error(_("bisect run failed:'git bisect--helper --bisect-state"
+ " %s' exited with error code %d"), args.v[0], res);
+ } else {
+ continue;
+ }
+
+ strbuf_release(&command);
+ strvec_clear(&args);
+ strvec_clear(&run_args);
+ return res;
+ }
+}
+
int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
{
enum {
@@ -1089,6 +1182,7 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
BISECT_REPLAY,
BISECT_SKIP,
BISECT_VISUALIZE,
+ BISECT_RUN,
} cmdmode = 0;
int res = 0, nolog = 0;
struct option options[] = {
@@ -1112,6 +1206,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
N_("skip some commits for checkout"), BISECT_SKIP),
OPT_CMDMODE(0, "bisect-visualize", &cmdmode,
N_("visualize the bisection"), BISECT_VISUALIZE),
+ OPT_CMDMODE(0, "bisect-run", &cmdmode,
+ N_("use <cmd>... to automatically bisect."), BISECT_RUN),
OPT_BOOL(0, "no-log", &nolog,
N_("no log for BISECT_WRITE")),
OPT_END()
@@ -1177,6 +1273,12 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
get_terms(&terms);
res = bisect_visualize(&terms, argv, argc);
break;
+ case BISECT_RUN:
+ if (!argc)
+ return error(_("bisect run failed: no command provided."));
+ get_terms(&terms);
+ res = bisect_run(&terms, argv, argc);
+ break;
default:
BUG("unknown subcommand %d", cmdmode);
}
diff --git a/git-bisect.sh b/git-bisect.sh
index 95f7f3fb8c..e83d011e17 100755
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -39,66 +39,6 @@ _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
TERM_BAD=bad
TERM_GOOD=good
-bisect_run () {
- git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD fail || exit
-
- test -n "$*" || die "$(gettext "bisect run failed: no command provided.")"
-
- while true
- do
- command="$@"
- eval_gettextln "running \$command"
- "$@"
- res=$?
-
- # Check for really bad run error.
- if [ $res -lt 0 -o $res -ge 128 ]
- then
- eval_gettextln "bisect run failed:
-exit code \$res from '\$command' is < 0 or >= 128" >&2
- exit $res
- fi
-
- # Find current state depending on run success or failure.
- # A special exit code of 125 means cannot test.
- if [ $res -eq 125 ]
- then
- state='skip'
- elif [ $res -gt 0 ]
- then
- state="$TERM_BAD"
- else
- state="$TERM_GOOD"
- fi
-
- git bisect--helper --bisect-state $state >"$GIT_DIR/BISECT_RUN"
- res=$?
-
- cat "$GIT_DIR/BISECT_RUN"
-
- if sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
- >/dev/null
- then
- gettextln "bisect run cannot continue any more" >&2
- exit $res
- fi
-
- if [ $res -ne 0 ]
- then
- eval_gettextln "bisect run failed:
-'bisect-state \$state' exited with error code \$res" >&2
- exit $res
- fi
-
- if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
- then
- gettextln "bisect run success"
- exit 0;
- fi
-
- done
-}
-
get_terms () {
if test -s "$GIT_DIR/BISECT_TERMS"
then
@@ -137,7 +77,7 @@ case "$#" in
log)
git bisect--helper --bisect-log || exit ;;
run)
- bisect_run "$@" ;;
+ git bisect--helper --bisect-run "$@" || exit;;
terms)
git bisect--helper --bisect-terms "$@" || exit;;
*)
--
2.29.2
