diff options
| -rw-r--r-- | bisect.c | 11 | ||||
| -rw-r--r-- | builtin/bisect--helper.c | 180 | ||||
| -rwxr-xr-x | git-bisect.sh | 47 |
3 files changed, 191 insertions, 47 deletions
@@ -988,8 +988,11 @@ void read_bisect_terms(const char **read_bad, const char **read_good) * the bisection process finished successfully. * In this case the calling function or command should not turn a * BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND return code into an error or a non zero exit code. - * If no_checkout is non-zero, the bisection process does not - * checkout the trial commit but instead simply updates BISECT_HEAD. + * + * Checking BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND + * in bisect_helper::bisect_next() and only transforming it to 0 at + * the end of bisect_helper::cmd_bisect__helper() helps bypassing + * all the code related to finding a commit to test. */ enum bisect_error bisect_next_all(struct repository *r, const char *prefix) { @@ -999,6 +1002,10 @@ enum bisect_error bisect_next_all(struct repository *r, const char *prefix) enum bisect_error res = BISECT_OK; struct object_id *bisect_rev; char *steps_msg; + /* + * If no_checkout is non-zero, the bisection process does not + * checkout the trial commit but instead simply updates BISECT_HEAD. + */ int no_checkout = ref_exists("BISECT_HEAD"); unsigned bisect_flags = 0; diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c index 45e46d4471..64f16d5d92 100644 --- a/builtin/bisect--helper.c +++ b/builtin/bisect--helper.c @@ -8,6 +8,7 @@ #include "run-command.h" #include "prompt.h" #include "quote.h" +#include "revision.h" static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS") static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV") @@ -29,10 +30,17 @@ static const char * const git_bisect_helper_usage[] = { N_("git bisect--helper --bisect-terms [--term-good | --term-old | --term-bad | --term-new]"), N_("git bisect--helper --bisect-start [--term-{old,good}=<term> --term-{new,bad}=<term>]" " [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<paths>...]"), + N_("git bisect--helper --bisect-next"), + N_("git bisect--helper --bisect-auto-next"), N_("git bisect--helper --bisect-autostart"), NULL }; +struct add_bisect_ref_data { + struct rev_info *revs; + unsigned int object_flags; +}; + struct bisect_terms { char *term_good; char *term_bad; @@ -56,6 +64,8 @@ static void set_terms(struct bisect_terms *terms, const char *bad, static const char vocab_bad[] = "bad|new"; static const char vocab_good[] = "good|old"; +static int bisect_autostart(struct bisect_terms *terms); + /* * Check whether the string `term` belongs to the set of strings * included in the variable arguments. @@ -80,7 +90,7 @@ static int write_in_file(const char *path, const char *mode, const char *format, FILE *fp = NULL; int res = 0; - if (strcmp(mode, "w")) + if (strcmp(mode, "w") && strcmp(mode, "a")) BUG("write-in-file does not support '%s' mode", mode); fp = fopen(path, mode); if (!fp) @@ -109,6 +119,18 @@ static int write_to_file(const char *path, const char *format, ...) return res; } +static int append_to_file(const char *path, const char *format, ...) +{ + int res; + va_list args; + + va_start(args, format); + res = write_in_file(path, "a", format, args); + va_end(args); + + return res; +} + static int check_term_format(const char *term, const char *orig_term) { int res; @@ -451,6 +473,142 @@ finish: return res; } +static int add_bisect_ref(const char *refname, const struct object_id *oid, + int flags, void *cb) +{ + struct add_bisect_ref_data *data = cb; + + add_pending_oid(data->revs, refname, oid, data->object_flags); + + return 0; +} + +static int prepare_revs(struct bisect_terms *terms, struct rev_info *revs) +{ + int res = 0; + struct add_bisect_ref_data cb = { revs }; + char *good = xstrfmt("%s-*", terms->term_good); + + /* + * We cannot use terms->term_bad directly in + * for_each_glob_ref_in() and we have to append a '*' to it, + * otherwise for_each_glob_ref_in() will append '/' and '*'. + */ + char *bad = xstrfmt("%s*", terms->term_bad); + + /* + * It is important to reset the flags used by revision walks + * as the previous call to bisect_next_all() in turn + * sets up a revision walk. + */ + reset_revision_walk(); + init_revisions(revs, NULL); + setup_revisions(0, NULL, revs, NULL); + for_each_glob_ref_in(add_bisect_ref, bad, "refs/bisect/", &cb); + cb.object_flags = UNINTERESTING; + for_each_glob_ref_in(add_bisect_ref, good, "refs/bisect/", &cb); + if (prepare_revision_walk(revs)) + res = error(_("revision walk setup failed\n")); + + free(good); + free(bad); + return res; +} + +static int bisect_skipped_commits(struct bisect_terms *terms) +{ + int res; + FILE *fp = NULL; + struct rev_info revs; + struct commit *commit; + struct pretty_print_context pp = {0}; + struct strbuf commit_name = STRBUF_INIT; + + res = prepare_revs(terms, &revs); + if (res) + return res; + + fp = fopen(git_path_bisect_log(), "a"); + if (!fp) + return error_errno(_("could not open '%s' for appending"), + git_path_bisect_log()); + + if (fprintf(fp, "# only skipped commits left to test\n") < 0) + return error_errno(_("failed to write to '%s'"), git_path_bisect_log()); + + while ((commit = get_revision(&revs)) != NULL) { + strbuf_reset(&commit_name); + format_commit_message(commit, "%s", + &commit_name, &pp); + fprintf(fp, "# possible first %s commit: [%s] %s\n", + terms->term_bad, oid_to_hex(&commit->object.oid), + commit_name.buf); + } + + /* + * Reset the flags used by revision walks in case + * there is another revision walk after this one. + */ + reset_revision_walk(); + + strbuf_release(&commit_name); + fclose(fp); + return 0; +} + +static int bisect_successful(struct bisect_terms *terms) +{ + struct object_id oid; + struct commit *commit; + struct pretty_print_context pp = {0}; + struct strbuf commit_name = STRBUF_INIT; + char *bad_ref = xstrfmt("refs/bisect/%s",terms->term_bad); + int res; + + read_ref(bad_ref, &oid); + commit = lookup_commit_reference_by_name(bad_ref); + format_commit_message(commit, "%s", &commit_name, &pp); + + res = append_to_file(git_path_bisect_log(), "# first %s commit: [%s] %s\n", + terms->term_bad, oid_to_hex(&commit->object.oid), + commit_name.buf); + + strbuf_release(&commit_name); + free(bad_ref); + return res; +} + +static enum bisect_error bisect_next(struct bisect_terms *terms, const char *prefix) +{ + enum bisect_error res; + + if (bisect_autostart(terms)) + return BISECT_FAILED; + + if (bisect_next_check(terms, terms->term_good)) + return BISECT_FAILED; + + /* Perform all bisection computation */ + res = bisect_next_all(the_repository, prefix); + + if (res == BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND) { + res = bisect_successful(terms); + return res ? res : BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND; + } else if (res == BISECT_ONLY_SKIPPED_LEFT) { + res = bisect_skipped_commits(terms); + return res ? res : BISECT_ONLY_SKIPPED_LEFT; + } + return res; +} + +static enum bisect_error bisect_auto_next(struct bisect_terms *terms, const char *prefix) +{ + if (bisect_next_check(terms, NULL)) + return BISECT_OK; + + return bisect_next(terms, prefix); +} + static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) { int no_checkout = 0; @@ -700,6 +858,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) BISECT_TERMS, BISECT_START, BISECT_AUTOSTART, + BISECT_NEXT, + BISECT_AUTO_NEXT } cmdmode = 0; int res = 0, nolog = 0; struct option options[] = { @@ -723,6 +883,10 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) N_("print out the bisect terms"), BISECT_TERMS), OPT_CMDMODE(0, "bisect-start", &cmdmode, N_("start the bisect session"), BISECT_START), + OPT_CMDMODE(0, "bisect-next", &cmdmode, + N_("find the next bisection commit"), BISECT_NEXT), + OPT_CMDMODE(0, "bisect-auto-next", &cmdmode, + 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_BOOL(0, "no-log", &nolog, @@ -784,6 +948,18 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) set_terms(&terms, "bad", "good"); res = bisect_start(&terms, argv, argc); break; + case BISECT_NEXT: + if (argc) + return error(_("--bisect-next requires 0 arguments")); + get_terms(&terms); + res = bisect_next(&terms, prefix); + break; + case BISECT_AUTO_NEXT: + if (argc) + return error(_("--bisect-auto-next requires 0 arguments")); + get_terms(&terms); + res = bisect_auto_next(&terms, prefix); + break; case BISECT_AUTOSTART: if (argc) return error(_("--bisect-autostart does not accept arguments")); @@ -799,7 +975,7 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) * Handle early success * From check_merge_bases > check_good_are_ancestors_of_bad > bisect_next_all */ - if (res == BISECT_INTERNAL_SUCCESS_MERGE_BASE) + if ((res == BISECT_INTERNAL_SUCCESS_MERGE_BASE) || (res == BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND)) res = BISECT_OK; return -res; diff --git a/git-bisect.sh b/git-bisect.sh index eefbee3e78..f7f39c705a 100755 --- a/git-bisect.sh +++ b/git-bisect.sh @@ -65,8 +65,7 @@ bisect_start() { # # Check if we can proceed to the next bisect state. # - get_terms - bisect_auto_next + git bisect--helper --bisect-auto-next || exit trap '-' 0 } @@ -119,45 +118,7 @@ bisect_state() { *) usage ;; esac - bisect_auto_next -} - -bisect_auto_next() { - git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD && bisect_next || : -} - -bisect_next() { - case "$#" in 0) ;; *) usage ;; esac - git bisect--helper --bisect-autostart || exit - git bisect--helper --bisect-next-check $TERM_GOOD $TERM_BAD $TERM_GOOD|| exit - - # Perform all bisection computation, display and checkout - git bisect--helper --next-all - res=$? - - # Check if we should exit because bisection is finished - if test $res -eq 10 - then - bad_rev=$(git show-ref --hash --verify refs/bisect/$TERM_BAD) - bad_commit=$(git show-branch $bad_rev) - echo "# first $TERM_BAD commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG" - exit 0 - elif test $res -eq 2 - then - echo "# only skipped commits left to test" >>"$GIT_DIR/BISECT_LOG" - good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/$TERM_GOOD-*") - for skipped in $(git rev-list refs/bisect/$TERM_BAD --not $good_revs) - do - skipped_commit=$(git show-branch $skipped) - echo "# possible first $TERM_BAD commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG" - done - exit $res - fi - - # Check for an error in the bisection process - test $res -ne 0 && exit $res - - return 0 + git bisect--helper --bisect-auto-next } bisect_visualize() { @@ -213,7 +174,7 @@ bisect_replay () { esac done <"$file" IFS="$oIFS" - bisect_auto_next + git bisect--helper --bisect-auto-next || exit } bisect_run () { @@ -310,7 +271,7 @@ case "$#" in bisect_skip "$@" ;; next) # Not sure we want "next" at the UI level anymore. - bisect_next "$@" ;; + git bisect--helper --bisect-next "$@" || exit ;; visualize|view) bisect_visualize "$@" ;; reset) |