From 88ad372fc02c119a4e44ae71c93b6fab9d998512 Mon Sep 17 00:00:00 2001 From: Pranit Bauva Date: Thu, 15 Oct 2020 15:38:32 +0200 Subject: bisect--helper: finish porting `bisect_start()` to C Add the subcommand to `git bisect--helper` and call it from git-bisect.sh. With the conversion of `bisect_auto_next()` from shell to C in a previous commit, `bisect_start()` can now be fully ported to C. So let's complete the `--bisect-start` subcommand of `git bisect--helper` so that it fully implements `bisect_start()`, and let's use this subcommand in `git-bisect.sh` instead of `bisect_start()`. Note that the `eval` in the changed line of `git-bisect.sh` cannot be dropped: it is necessary because the `rev` and the `tail` variables may contain multiple, quoted arguments that need to be passed to `bisect--helper` (without the quotes, naturally). Mentored-by: Christian Couder Mentored-by: Johannes Schindelin Signed-off-by: Pranit Bauva Signed-off-by: Tanushree Tumane Signed-off-by: Miriam Rubio Reviewed-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- builtin/bisect--helper.c | 41 +++++++++++++++++++++++++++-------------- 1 file changed, 27 insertions(+), 14 deletions(-) (limited to 'builtin') diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c index 64f16d5d92..0196ee144c 100644 --- a/builtin/bisect--helper.c +++ b/builtin/bisect--helper.c @@ -85,6 +85,19 @@ static int one_of(const char *term, ...) return res; } +/* + * return code BISECT_INTERNAL_SUCCESS_MERGE_BASE + * and BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND are codes + * that indicate special success. + */ + +static int is_bisect_success(enum bisect_error res) +{ + return !res || + res == BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND || + res == BISECT_INTERNAL_SUCCESS_MERGE_BASE; +} + static int write_in_file(const char *path, const char *mode, const char *format, va_list args) { FILE *fp = NULL; @@ -609,12 +622,13 @@ static enum bisect_error bisect_auto_next(struct bisect_terms *terms, const char return bisect_next(terms, prefix); } -static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) +static enum bisect_error bisect_start(struct bisect_terms *terms, const char **argv, int argc) { int no_checkout = 0; int first_parent_only = 0; int i, has_double_dash = 0, must_write_terms = 0, bad_seen = 0; - int flags, pathspec_pos, res = 0; + int flags, pathspec_pos; + enum bisect_error res = BISECT_OK; struct string_list revs = STRING_LIST_INIT_DUP; struct string_list states = STRING_LIST_INIT_DUP; struct strbuf start_head = STRBUF_INIT; @@ -754,14 +768,7 @@ static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) * Get rid of any old bisect state. */ if (bisect_clean_state()) - return -1; - - /* - * In case of mistaken revs or checkout error, or signals received, - * "bisect_auto_next" below may exit or misbehave. - * We have to trap this to be able to clean up using - * "bisect_clean_state". - */ + return BISECT_FAILED; /* * Write new start state @@ -778,7 +785,7 @@ static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) } if (update_ref(NULL, "BISECT_HEAD", &oid, NULL, 0, UPDATE_REFS_MSG_ON_ERR)) { - res = -1; + res = BISECT_FAILED; goto finish; } } @@ -790,25 +797,31 @@ static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) for (i = 0; i < states.nr; i++) if (bisect_write(states.items[i].string, revs.items[i].string, terms, 1)) { - res = -1; + res = BISECT_FAILED; goto finish; } if (must_write_terms && write_terms(terms->term_bad, terms->term_good)) { - res = -1; + res = BISECT_FAILED; goto finish; } res = bisect_append_log_quoted(argv); if (res) - res = -1; + res = BISECT_FAILED; finish: string_list_clear(&revs, 0); string_list_clear(&states, 0); strbuf_release(&start_head); strbuf_release(&bisect_names); + if (res) + return res; + + res = bisect_auto_next(terms, NULL); + if (!is_bisect_success(res)) + bisect_clean_state(); return res; } -- cgit v1.2.3