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![Junio C Hamano](/assets/img/avatar_default.png)
Rewrite of the "git bisect" script in C continues. * mr/bisect-in-c-2: bisect--helper: reimplement `bisect_next` and `bisect_auto_next` shell functions in C bisect: call 'clear_commit_marks_all()' in 'bisect_next_all()' bisect--helper: reimplement `bisect_autostart` shell function in C bisect--helper: introduce new `write_in_file()` function bisect--helper: use '-res' in 'cmd_bisect__helper' return bisect--helper: BUG() in cmd_*() on invalid subcommand
982 lines
26 KiB
C
982 lines
26 KiB
C
#include "builtin.h"
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#include "cache.h"
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#include "parse-options.h"
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#include "bisect.h"
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#include "refs.h"
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#include "dir.h"
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#include "strvec.h"
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#include "run-command.h"
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#include "prompt.h"
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#include "quote.h"
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#include "revision.h"
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static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS")
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static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV")
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static GIT_PATH_FUNC(git_path_bisect_ancestors_ok, "BISECT_ANCESTORS_OK")
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static GIT_PATH_FUNC(git_path_bisect_start, "BISECT_START")
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static GIT_PATH_FUNC(git_path_bisect_log, "BISECT_LOG")
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static GIT_PATH_FUNC(git_path_head_name, "head-name")
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static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES")
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static GIT_PATH_FUNC(git_path_bisect_first_parent, "BISECT_FIRST_PARENT")
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static const char * const git_bisect_helper_usage[] = {
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N_("git bisect--helper --next-all"),
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N_("git bisect--helper --write-terms <bad_term> <good_term>"),
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N_("git bisect--helper --bisect-clean-state"),
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N_("git bisect--helper --bisect-reset [<commit>]"),
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N_("git bisect--helper --bisect-write [--no-log] <state> <revision> <good_term> <bad_term>"),
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N_("git bisect--helper --bisect-check-and-set-terms <command> <good_term> <bad_term>"),
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N_("git bisect--helper --bisect-next-check <good_term> <bad_term> [<term>]"),
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N_("git bisect--helper --bisect-terms [--term-good | --term-old | --term-bad | --term-new]"),
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N_("git bisect--helper --bisect-start [--term-{new,bad}=<term> --term-{old,good}=<term>]"
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" [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<paths>...]"),
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N_("git bisect--helper --bisect-next"),
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N_("git bisect--helper --bisect-auto-next"),
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N_("git bisect--helper --bisect-autostart"),
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NULL
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};
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struct add_bisect_ref_data {
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struct rev_info *revs;
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unsigned int object_flags;
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};
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struct bisect_terms {
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char *term_good;
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char *term_bad;
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};
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static void free_terms(struct bisect_terms *terms)
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{
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FREE_AND_NULL(terms->term_good);
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FREE_AND_NULL(terms->term_bad);
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}
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static void set_terms(struct bisect_terms *terms, const char *bad,
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const char *good)
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{
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free((void *)terms->term_good);
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terms->term_good = xstrdup(good);
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free((void *)terms->term_bad);
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terms->term_bad = xstrdup(bad);
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}
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static const char vocab_bad[] = "bad|new";
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static const char vocab_good[] = "good|old";
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static int bisect_autostart(struct bisect_terms *terms);
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/*
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* Check whether the string `term` belongs to the set of strings
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* included in the variable arguments.
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*/
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LAST_ARG_MUST_BE_NULL
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static int one_of(const char *term, ...)
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{
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int res = 0;
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va_list matches;
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const char *match;
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va_start(matches, term);
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while (!res && (match = va_arg(matches, const char *)))
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res = !strcmp(term, match);
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va_end(matches);
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return res;
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}
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static int write_in_file(const char *path, const char *mode, const char *format, va_list args)
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{
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FILE *fp = NULL;
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int res = 0;
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if (strcmp(mode, "w") && strcmp(mode, "a"))
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BUG("write-in-file does not support '%s' mode", mode);
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fp = fopen(path, mode);
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if (!fp)
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return error_errno(_("cannot open file '%s' in mode '%s'"), path, mode);
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res = vfprintf(fp, format, args);
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if (res < 0) {
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int saved_errno = errno;
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fclose(fp);
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errno = saved_errno;
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return error_errno(_("could not write to file '%s'"), path);
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}
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return fclose(fp);
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}
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static int write_to_file(const char *path, const char *format, ...)
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{
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int res;
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va_list args;
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va_start(args, format);
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res = write_in_file(path, "w", format, args);
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va_end(args);
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return res;
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}
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static int append_to_file(const char *path, const char *format, ...)
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{
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int res;
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va_list args;
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va_start(args, format);
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res = write_in_file(path, "a", format, args);
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va_end(args);
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return res;
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}
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static int check_term_format(const char *term, const char *orig_term)
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{
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int res;
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char *new_term = xstrfmt("refs/bisect/%s", term);
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res = check_refname_format(new_term, 0);
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free(new_term);
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if (res)
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return error(_("'%s' is not a valid term"), term);
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if (one_of(term, "help", "start", "skip", "next", "reset",
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"visualize", "view", "replay", "log", "run", "terms", NULL))
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return error(_("can't use the builtin command '%s' as a term"), term);
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/*
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* In theory, nothing prevents swapping completely good and bad,
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* but this situation could be confusing and hasn't been tested
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* enough. Forbid it for now.
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*/
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if ((strcmp(orig_term, "bad") && one_of(term, "bad", "new", NULL)) ||
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(strcmp(orig_term, "good") && one_of(term, "good", "old", NULL)))
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return error(_("can't change the meaning of the term '%s'"), term);
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return 0;
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}
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static int write_terms(const char *bad, const char *good)
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{
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int res;
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if (!strcmp(bad, good))
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return error(_("please use two different terms"));
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if (check_term_format(bad, "bad") || check_term_format(good, "good"))
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return -1;
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res = write_to_file(git_path_bisect_terms(), "%s\n%s\n", bad, good);
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return res;
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}
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static int is_expected_rev(const char *expected_hex)
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{
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struct strbuf actual_hex = STRBUF_INIT;
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int res = 0;
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if (strbuf_read_file(&actual_hex, git_path_bisect_expected_rev(), 0) >= 40) {
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strbuf_trim(&actual_hex);
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res = !strcmp(actual_hex.buf, expected_hex);
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}
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strbuf_release(&actual_hex);
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return res;
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}
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static void check_expected_revs(const char **revs, int rev_nr)
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{
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int i;
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for (i = 0; i < rev_nr; i++) {
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if (!is_expected_rev(revs[i])) {
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unlink_or_warn(git_path_bisect_ancestors_ok());
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unlink_or_warn(git_path_bisect_expected_rev());
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}
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}
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}
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static int bisect_reset(const char *commit)
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{
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struct strbuf branch = STRBUF_INIT;
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if (!commit) {
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if (strbuf_read_file(&branch, git_path_bisect_start(), 0) < 1) {
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printf(_("We are not bisecting.\n"));
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return 0;
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}
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strbuf_rtrim(&branch);
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} else {
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struct object_id oid;
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if (get_oid_commit(commit, &oid))
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return error(_("'%s' is not a valid commit"), commit);
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strbuf_addstr(&branch, commit);
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}
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if (!ref_exists("BISECT_HEAD")) {
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struct strvec argv = STRVEC_INIT;
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strvec_pushl(&argv, "checkout", branch.buf, "--", NULL);
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if (run_command_v_opt(argv.v, RUN_GIT_CMD)) {
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error(_("could not check out original"
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" HEAD '%s'. Try 'git bisect"
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" reset <commit>'."), branch.buf);
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strbuf_release(&branch);
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strvec_clear(&argv);
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return -1;
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}
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strvec_clear(&argv);
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}
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strbuf_release(&branch);
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return bisect_clean_state();
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}
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static void log_commit(FILE *fp, char *fmt, const char *state,
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struct commit *commit)
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{
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struct pretty_print_context pp = {0};
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struct strbuf commit_msg = STRBUF_INIT;
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char *label = xstrfmt(fmt, state);
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format_commit_message(commit, "%s", &commit_msg, &pp);
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fprintf(fp, "# %s: [%s] %s\n", label, oid_to_hex(&commit->object.oid),
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commit_msg.buf);
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strbuf_release(&commit_msg);
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free(label);
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}
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static int bisect_write(const char *state, const char *rev,
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const struct bisect_terms *terms, int nolog)
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{
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struct strbuf tag = STRBUF_INIT;
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struct object_id oid;
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struct commit *commit;
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FILE *fp = NULL;
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int res = 0;
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if (!strcmp(state, terms->term_bad)) {
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strbuf_addf(&tag, "refs/bisect/%s", state);
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} else if (one_of(state, terms->term_good, "skip", NULL)) {
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strbuf_addf(&tag, "refs/bisect/%s-%s", state, rev);
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} else {
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res = error(_("Bad bisect_write argument: %s"), state);
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goto finish;
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}
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if (get_oid(rev, &oid)) {
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res = error(_("couldn't get the oid of the rev '%s'"), rev);
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goto finish;
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}
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if (update_ref(NULL, tag.buf, &oid, NULL, 0,
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UPDATE_REFS_MSG_ON_ERR)) {
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res = -1;
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goto finish;
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}
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fp = fopen(git_path_bisect_log(), "a");
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if (!fp) {
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res = error_errno(_("couldn't open the file '%s'"), git_path_bisect_log());
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goto finish;
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}
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commit = lookup_commit_reference(the_repository, &oid);
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log_commit(fp, "%s", state, commit);
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if (!nolog)
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fprintf(fp, "git bisect %s %s\n", state, rev);
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finish:
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if (fp)
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fclose(fp);
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strbuf_release(&tag);
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return res;
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}
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static int check_and_set_terms(struct bisect_terms *terms, const char *cmd)
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{
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int has_term_file = !is_empty_or_missing_file(git_path_bisect_terms());
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if (one_of(cmd, "skip", "start", "terms", NULL))
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return 0;
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if (has_term_file && strcmp(cmd, terms->term_bad) &&
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strcmp(cmd, terms->term_good))
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return error(_("Invalid command: you're currently in a "
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"%s/%s bisect"), terms->term_bad,
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terms->term_good);
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if (!has_term_file) {
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if (one_of(cmd, "bad", "good", NULL)) {
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set_terms(terms, "bad", "good");
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return write_terms(terms->term_bad, terms->term_good);
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}
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if (one_of(cmd, "new", "old", NULL)) {
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set_terms(terms, "new", "old");
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return write_terms(terms->term_bad, terms->term_good);
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}
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}
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return 0;
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}
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static int mark_good(const char *refname, const struct object_id *oid,
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int flag, void *cb_data)
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{
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int *m_good = (int *)cb_data;
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*m_good = 0;
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return 1;
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}
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static const char need_bad_and_good_revision_warning[] =
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N_("You need to give me at least one %s and %s revision.\n"
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"You can use \"git bisect %s\" and \"git bisect %s\" for that.");
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static const char need_bisect_start_warning[] =
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N_("You need to start by \"git bisect start\".\n"
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"You then need to give me at least one %s and %s revision.\n"
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"You can use \"git bisect %s\" and \"git bisect %s\" for that.");
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static int decide_next(const struct bisect_terms *terms,
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const char *current_term, int missing_good,
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int missing_bad)
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{
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if (!missing_good && !missing_bad)
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return 0;
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if (!current_term)
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return -1;
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if (missing_good && !missing_bad &&
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!strcmp(current_term, terms->term_good)) {
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char *yesno;
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/*
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* have bad (or new) but not good (or old). We could bisect
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* although this is less optimum.
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*/
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warning(_("bisecting only with a %s commit"), terms->term_bad);
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if (!isatty(0))
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return 0;
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/*
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* TRANSLATORS: Make sure to include [Y] and [n] in your
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* translation. The program will only accept English input
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* at this point.
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*/
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yesno = git_prompt(_("Are you sure [Y/n]? "), PROMPT_ECHO);
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if (starts_with(yesno, "N") || starts_with(yesno, "n"))
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return -1;
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return 0;
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}
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if (!is_empty_or_missing_file(git_path_bisect_start()))
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return error(_(need_bad_and_good_revision_warning),
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vocab_bad, vocab_good, vocab_bad, vocab_good);
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else
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return error(_(need_bisect_start_warning),
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vocab_good, vocab_bad, vocab_good, vocab_bad);
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}
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static int bisect_next_check(const struct bisect_terms *terms,
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const char *current_term)
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{
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int missing_good = 1, missing_bad = 1;
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char *bad_ref = xstrfmt("refs/bisect/%s", terms->term_bad);
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char *good_glob = xstrfmt("%s-*", terms->term_good);
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if (ref_exists(bad_ref))
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missing_bad = 0;
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for_each_glob_ref_in(mark_good, good_glob, "refs/bisect/",
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(void *) &missing_good);
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free(good_glob);
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free(bad_ref);
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return decide_next(terms, current_term, missing_good, missing_bad);
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}
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static int get_terms(struct bisect_terms *terms)
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{
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struct strbuf str = STRBUF_INIT;
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FILE *fp = NULL;
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int res = 0;
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fp = fopen(git_path_bisect_terms(), "r");
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if (!fp) {
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res = -1;
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goto finish;
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}
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free_terms(terms);
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strbuf_getline_lf(&str, fp);
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terms->term_bad = strbuf_detach(&str, NULL);
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strbuf_getline_lf(&str, fp);
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terms->term_good = strbuf_detach(&str, NULL);
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finish:
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if (fp)
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fclose(fp);
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strbuf_release(&str);
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return res;
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}
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static int bisect_terms(struct bisect_terms *terms, const char *option)
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{
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if (get_terms(terms))
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return error(_("no terms defined"));
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if (option == NULL) {
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printf(_("Your current terms are %s for the old state\n"
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"and %s for the new state.\n"),
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terms->term_good, terms->term_bad);
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return 0;
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}
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if (one_of(option, "--term-good", "--term-old", NULL))
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printf("%s\n", terms->term_good);
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else if (one_of(option, "--term-bad", "--term-new", NULL))
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printf("%s\n", terms->term_bad);
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else
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return error(_("invalid argument %s for 'git bisect terms'.\n"
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"Supported options are: "
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"--term-good|--term-old and "
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"--term-bad|--term-new."), option);
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return 0;
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}
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static int bisect_append_log_quoted(const char **argv)
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{
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int res = 0;
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FILE *fp = fopen(git_path_bisect_log(), "a");
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struct strbuf orig_args = STRBUF_INIT;
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if (!fp)
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return -1;
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if (fprintf(fp, "git bisect start") < 1) {
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res = -1;
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goto finish;
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}
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sq_quote_argv(&orig_args, argv);
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if (fprintf(fp, "%s\n", orig_args.buf) < 1)
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res = -1;
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finish:
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fclose(fp);
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strbuf_release(&orig_args);
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return res;
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}
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static int add_bisect_ref(const char *refname, const struct object_id *oid,
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int flags, void *cb)
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{
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struct add_bisect_ref_data *data = cb;
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add_pending_oid(data->revs, refname, oid, data->object_flags);
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return 0;
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}
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|
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static int prepare_revs(struct bisect_terms *terms, struct rev_info *revs)
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{
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int res = 0;
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struct add_bisect_ref_data cb = { revs };
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char *good = xstrfmt("%s-*", terms->term_good);
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|
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/*
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* We cannot use terms->term_bad directly in
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* for_each_glob_ref_in() and we have to append a '*' to it,
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* 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;
|
|
int first_parent_only = 0;
|
|
int i, has_double_dash = 0, must_write_terms = 0, bad_seen = 0;
|
|
int flags, pathspec_pos, res = 0;
|
|
struct string_list revs = STRING_LIST_INIT_DUP;
|
|
struct string_list states = STRING_LIST_INIT_DUP;
|
|
struct strbuf start_head = STRBUF_INIT;
|
|
struct strbuf bisect_names = STRBUF_INIT;
|
|
struct object_id head_oid;
|
|
struct object_id oid;
|
|
const char *head;
|
|
|
|
if (is_bare_repository())
|
|
no_checkout = 1;
|
|
|
|
/*
|
|
* Check for one bad and then some good revisions
|
|
*/
|
|
for (i = 0; i < argc; i++) {
|
|
if (!strcmp(argv[i], "--")) {
|
|
has_double_dash = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
if (!strcmp(argv[i], "--")) {
|
|
break;
|
|
} else if (!strcmp(arg, "--no-checkout")) {
|
|
no_checkout = 1;
|
|
} else if (!strcmp(arg, "--first-parent")) {
|
|
first_parent_only = 1;
|
|
} else if (!strcmp(arg, "--term-good") ||
|
|
!strcmp(arg, "--term-old")) {
|
|
i++;
|
|
if (argc <= i)
|
|
return error(_("'' is not a valid term"));
|
|
must_write_terms = 1;
|
|
free((void *) terms->term_good);
|
|
terms->term_good = xstrdup(argv[i]);
|
|
} else if (skip_prefix(arg, "--term-good=", &arg) ||
|
|
skip_prefix(arg, "--term-old=", &arg)) {
|
|
must_write_terms = 1;
|
|
free((void *) terms->term_good);
|
|
terms->term_good = xstrdup(arg);
|
|
} else if (!strcmp(arg, "--term-bad") ||
|
|
!strcmp(arg, "--term-new")) {
|
|
i++;
|
|
if (argc <= i)
|
|
return error(_("'' is not a valid term"));
|
|
must_write_terms = 1;
|
|
free((void *) terms->term_bad);
|
|
terms->term_bad = xstrdup(argv[i]);
|
|
} else if (skip_prefix(arg, "--term-bad=", &arg) ||
|
|
skip_prefix(arg, "--term-new=", &arg)) {
|
|
must_write_terms = 1;
|
|
free((void *) terms->term_bad);
|
|
terms->term_bad = xstrdup(arg);
|
|
} else if (starts_with(arg, "--")) {
|
|
return error(_("unrecognized option: '%s'"), arg);
|
|
} else if (!get_oidf(&oid, "%s^{commit}", arg)) {
|
|
string_list_append(&revs, oid_to_hex(&oid));
|
|
} else if (has_double_dash) {
|
|
die(_("'%s' does not appear to be a valid "
|
|
"revision"), arg);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
pathspec_pos = i;
|
|
|
|
/*
|
|
* The user ran "git bisect start <sha1> <sha1>", hence did not
|
|
* explicitly specify the terms, but we are already starting to
|
|
* set references named with the default terms, and won't be able
|
|
* to change afterwards.
|
|
*/
|
|
if (revs.nr)
|
|
must_write_terms = 1;
|
|
for (i = 0; i < revs.nr; i++) {
|
|
if (bad_seen) {
|
|
string_list_append(&states, terms->term_good);
|
|
} else {
|
|
bad_seen = 1;
|
|
string_list_append(&states, terms->term_bad);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Verify HEAD
|
|
*/
|
|
head = resolve_ref_unsafe("HEAD", 0, &head_oid, &flags);
|
|
if (!head)
|
|
if (get_oid("HEAD", &head_oid))
|
|
return error(_("bad HEAD - I need a HEAD"));
|
|
|
|
/*
|
|
* Check if we are bisecting
|
|
*/
|
|
if (!is_empty_or_missing_file(git_path_bisect_start())) {
|
|
/* Reset to the rev from where we started */
|
|
strbuf_read_file(&start_head, git_path_bisect_start(), 0);
|
|
strbuf_trim(&start_head);
|
|
if (!no_checkout) {
|
|
struct strvec argv = STRVEC_INIT;
|
|
|
|
strvec_pushl(&argv, "checkout", start_head.buf,
|
|
"--", NULL);
|
|
if (run_command_v_opt(argv.v, RUN_GIT_CMD)) {
|
|
res = error(_("checking out '%s' failed."
|
|
" Try 'git bisect start "
|
|
"<valid-branch>'."),
|
|
start_head.buf);
|
|
goto finish;
|
|
}
|
|
}
|
|
} else {
|
|
/* Get the rev from where we start. */
|
|
if (!get_oid(head, &head_oid) &&
|
|
!starts_with(head, "refs/heads/")) {
|
|
strbuf_reset(&start_head);
|
|
strbuf_addstr(&start_head, oid_to_hex(&head_oid));
|
|
} else if (!get_oid(head, &head_oid) &&
|
|
skip_prefix(head, "refs/heads/", &head)) {
|
|
/*
|
|
* This error message should only be triggered by
|
|
* cogito usage, and cogito users should understand
|
|
* it relates to cg-seek.
|
|
*/
|
|
if (!is_empty_or_missing_file(git_path_head_name()))
|
|
return error(_("won't bisect on cg-seek'ed tree"));
|
|
strbuf_addstr(&start_head, head);
|
|
} else {
|
|
return error(_("bad HEAD - strange symbolic ref"));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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".
|
|
*/
|
|
|
|
/*
|
|
* Write new start state
|
|
*/
|
|
write_file(git_path_bisect_start(), "%s\n", start_head.buf);
|
|
|
|
if (first_parent_only)
|
|
write_file(git_path_bisect_first_parent(), "\n");
|
|
|
|
if (no_checkout) {
|
|
if (get_oid(start_head.buf, &oid) < 0) {
|
|
res = error(_("invalid ref: '%s'"), start_head.buf);
|
|
goto finish;
|
|
}
|
|
if (update_ref(NULL, "BISECT_HEAD", &oid, NULL, 0,
|
|
UPDATE_REFS_MSG_ON_ERR)) {
|
|
res = -1;
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
if (pathspec_pos < argc - 1)
|
|
sq_quote_argv(&bisect_names, argv + pathspec_pos);
|
|
write_file(git_path_bisect_names(), "%s\n", bisect_names.buf);
|
|
|
|
for (i = 0; i < states.nr; i++)
|
|
if (bisect_write(states.items[i].string,
|
|
revs.items[i].string, terms, 1)) {
|
|
res = -1;
|
|
goto finish;
|
|
}
|
|
|
|
if (must_write_terms && write_terms(terms->term_bad,
|
|
terms->term_good)) {
|
|
res = -1;
|
|
goto finish;
|
|
}
|
|
|
|
res = bisect_append_log_quoted(argv);
|
|
if (res)
|
|
res = -1;
|
|
|
|
finish:
|
|
string_list_clear(&revs, 0);
|
|
string_list_clear(&states, 0);
|
|
strbuf_release(&start_head);
|
|
strbuf_release(&bisect_names);
|
|
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 {
|
|
NEXT_ALL = 1,
|
|
WRITE_TERMS,
|
|
BISECT_CLEAN_STATE,
|
|
CHECK_EXPECTED_REVS,
|
|
BISECT_RESET,
|
|
BISECT_WRITE,
|
|
CHECK_AND_SET_TERMS,
|
|
BISECT_NEXT_CHECK,
|
|
BISECT_TERMS,
|
|
BISECT_START,
|
|
BISECT_AUTOSTART,
|
|
BISECT_NEXT,
|
|
BISECT_AUTO_NEXT
|
|
} cmdmode = 0;
|
|
int res = 0, nolog = 0;
|
|
struct option options[] = {
|
|
OPT_CMDMODE(0, "next-all", &cmdmode,
|
|
N_("perform 'git bisect next'"), NEXT_ALL),
|
|
OPT_CMDMODE(0, "write-terms", &cmdmode,
|
|
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_CMDMODE(0, "bisect-reset", &cmdmode,
|
|
N_("reset the bisection state"), BISECT_RESET),
|
|
OPT_CMDMODE(0, "bisect-write", &cmdmode,
|
|
N_("write out the bisection state in BISECT_LOG"), BISECT_WRITE),
|
|
OPT_CMDMODE(0, "check-and-set-terms", &cmdmode,
|
|
N_("check and set terms in a bisection state"), CHECK_AND_SET_TERMS),
|
|
OPT_CMDMODE(0, "bisect-next-check", &cmdmode,
|
|
N_("check whether bad or good terms exist"), BISECT_NEXT_CHECK),
|
|
OPT_CMDMODE(0, "bisect-terms", &cmdmode,
|
|
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()
|
|
};
|
|
struct bisect_terms terms = { .term_good = NULL, .term_bad = NULL };
|
|
|
|
argc = parse_options(argc, argv, prefix, options,
|
|
git_bisect_helper_usage,
|
|
PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_UNKNOWN);
|
|
|
|
if (!cmdmode)
|
|
usage_with_options(git_bisect_helper_usage, options);
|
|
|
|
switch (cmdmode) {
|
|
case NEXT_ALL:
|
|
res = bisect_next_all(the_repository, prefix);
|
|
break;
|
|
case WRITE_TERMS:
|
|
if (argc != 2)
|
|
return error(_("--write-terms requires two arguments"));
|
|
return write_terms(argv[0], argv[1]);
|
|
case BISECT_CLEAN_STATE:
|
|
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;
|
|
case BISECT_RESET:
|
|
if (argc > 1)
|
|
return error(_("--bisect-reset requires either no argument or a commit"));
|
|
return !!bisect_reset(argc ? argv[0] : NULL);
|
|
case BISECT_WRITE:
|
|
if (argc != 4 && argc != 5)
|
|
return error(_("--bisect-write requires either 4 or 5 arguments"));
|
|
set_terms(&terms, argv[3], argv[2]);
|
|
res = bisect_write(argv[0], argv[1], &terms, nolog);
|
|
break;
|
|
case CHECK_AND_SET_TERMS:
|
|
if (argc != 3)
|
|
return error(_("--check-and-set-terms requires 3 arguments"));
|
|
set_terms(&terms, argv[2], argv[1]);
|
|
res = check_and_set_terms(&terms, argv[0]);
|
|
break;
|
|
case BISECT_NEXT_CHECK:
|
|
if (argc != 2 && argc != 3)
|
|
return error(_("--bisect-next-check requires 2 or 3 arguments"));
|
|
set_terms(&terms, argv[1], argv[0]);
|
|
res = bisect_next_check(&terms, argc == 3 ? argv[2] : NULL);
|
|
break;
|
|
case BISECT_TERMS:
|
|
if (argc > 1)
|
|
return error(_("--bisect-terms requires 0 or 1 argument"));
|
|
res = bisect_terms(&terms, argc == 1 ? argv[0] : NULL);
|
|
break;
|
|
case BISECT_START:
|
|
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:
|
|
BUG("unknown subcommand %d", cmdmode);
|
|
}
|
|
free_terms(&terms);
|
|
|
|
/*
|
|
* Handle early success
|
|
* From check_merge_bases > check_good_are_ancestors_of_bad > bisect_next_all
|
|
*/
|
|
if ((res == BISECT_INTERNAL_SUCCESS_MERGE_BASE) || (res == BISECT_INTERNAL_SUCCESS_1ST_BAD_FOUND))
|
|
res = BISECT_OK;
|
|
|
|
return -res;
|
|
}
|