diff options
Diffstat (limited to 'builtin')
| -rw-r--r-- | builtin/bisect--helper.c | 269 |
1 files changed, 258 insertions, 11 deletions
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c index 2f8ef0ea30..7512b880f0 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") @@ -29,9 +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-{new,bad}=<term> --term-{old,good}=<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; @@ -55,6 +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. @@ -74,6 +85,52 @@ static int one_of(const char *term, ...) return res; } +static int write_in_file(const char *path, const char *mode, const char *format, va_list args) +{ + FILE *fp = NULL; + int res = 0; + + if (strcmp(mode, "w") && strcmp(mode, "a")) + BUG("write-in-file does not support '%s' mode", mode); + fp = fopen(path, mode); + if (!fp) + return error_errno(_("cannot open file '%s' in mode '%s'"), path, mode); + res = vfprintf(fp, format, args); + + if (res < 0) { + int saved_errno = errno; + fclose(fp); + errno = saved_errno; + return error_errno(_("could not write to file '%s'"), path); + } + + return fclose(fp); +} + +static int write_to_file(const char *path, const char *format, ...) +{ + int res; + va_list args; + + va_start(args, format); + res = write_in_file(path, "w", format, args); + va_end(args); + + 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; @@ -104,7 +161,6 @@ static int check_term_format(const char *term, const char *orig_term) static int write_terms(const char *bad, const char *good) { - FILE *fp = NULL; int res; if (!strcmp(bad, good)) @@ -113,13 +169,9 @@ static int write_terms(const char *bad, const char *good) if (check_term_format(bad, "bad") || check_term_format(good, "good")) return -1; - fp = fopen(git_path_bisect_terms(), "w"); - if (!fp) - return error_errno(_("could not open the file BISECT_TERMS")); + res = write_to_file(git_path_bisect_terms(), "%s\n%s\n", bad, good); - res = fprintf(fp, "%s\n%s\n", bad, good); - res |= fclose(fp); - return (res < 0) ? -1 : 0; + return res; } static int is_expected_rev(const char *expected_hex) @@ -421,6 +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; @@ -623,6 +811,38 @@ finish: return res; } +static inline int file_is_not_empty(const char *path) +{ + return !is_empty_or_missing_file(path); +} + +static int bisect_autostart(struct bisect_terms *terms) +{ + int res; + const char *yesno; + + if (file_is_not_empty(git_path_bisect_start())) + return 0; + + fprintf_ln(stderr, _("You need to start by \"git bisect " + "start\"\n")); + + if (!isatty(STDIN_FILENO)) + return -1; + + /* + * TRANSLATORS: Make sure to include [Y] and [n] in your + * translation. The program will only accept English input + * at this point. + */ + yesno = git_prompt(_("Do you want me to do it for you " + "[Y/n]? "), PROMPT_ECHO); + res = tolower(*yesno) == 'n' ? + -1 : bisect_start(terms, empty_strvec, 0); + + return res; +} + int cmd_bisect__helper(int argc, const char **argv, const char *prefix) { enum { @@ -635,7 +855,10 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) CHECK_AND_SET_TERMS, BISECT_NEXT_CHECK, BISECT_TERMS, - BISECT_START + BISECT_START, + BISECT_AUTOSTART, + BISECT_NEXT, + BISECT_AUTO_NEXT } cmdmode = 0; int res = 0, nolog = 0; struct option options[] = { @@ -659,6 +882,12 @@ 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, N_("no log for BISECT_WRITE")), OPT_END() @@ -718,8 +947,26 @@ 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")); + set_terms(&terms, "bad", "good"); + res = bisect_autostart(&terms); + break; default: - return error("BUG: unknown subcommand '%d'", cmdmode); + BUG("unknown subcommand %d", cmdmode); } free_terms(&terms); @@ -727,8 +974,8 @@ 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 abs(res); + return -res; } |