Reimplement `bisect_reset` shell function in C and add a `--bisect-reset` subcommand to `git bisect--helper` to call it from git-bisect.sh .
Using `bisect_reset` subcommand is a temporary measure to port shell functions to C so as to use the existing test suite. As more functions are ported, this subcommand would be retired but its implementation will be called by some other method. Note: --bisect-clean-state subcommand has not been retired as there are still a function namely `bisect_start()` which still uses this subcommand. Mentored-by: Lars Schneider <larsxschnei...@gmail.com> Mentored-by: Christian Couder <chrisc...@tuxfamily.org> Signed-off-by: Pranit Bauva <pranit.ba...@gmail.com> --- Hey, This is the part 2 of the initial series[1] on bisect re-write. When I submitted my patches of the part 1 of the bisect series, Ramsay informed that he has been working on my previous patches and pointed me to his patches. I have incorporated his changes into this series. Stephan did a awesome job in reviewing my series and I have incorporated those changes as well. Ramsay's requested changes which have been incorporated: * bisect--helper: convert to struct object_id: I have took out the bits which were in this series and hand-picked them in this series. * bisect--helper: add a log_commit() helper function: This function might not seem to be very relevant in this part of the series, but it is going to be in future parts of the series as described in `188ea5855d93df` of Ramsay's git.git repo[2]. * bisect--helper: reduce scope of a variable in `bisect_start` * bisect--helper: remove useless sub-expression in condition: I had already done this change as suggested by Stephan. * bisect--helper: set correct term from --term-new= option: I had already done this change as suggested by Stephan. * bisect--helper: remove redundant assignment to has_double_dash * bisect--helper: remove redundant goto's * bisect--helper: add some vertical whitespace * bisect--helper: fixup some coding style issues Ramsay's changes which I had already done ([]-ed comments): * `bisect_write`: add a GIT_PATH_FUNC() removed earlier * `bisect_write`: lookup_commit_reference() now takes an object_id * `bisect_next_check`: addressed comments in Stephan's review and Junio's squash * `bisect_terms`: fixed up usage string and tested for --term-[good|old] and --term-[bad|new] in bisect-terms subcommand argument processing: instead of fixing up usage string, I just removed it as Stephan suggested. Stephan's requested changes which have been incorporated: * Use goto's using `goto fail` and `goto finish` * Marking strings for translation * Stored res value and then returned it at the end * Implement set_terms() and free_terms() for proper memory handling for struct bisect_terms and fixed all leakages * Remove bisect_voc() function * Remove the bisect_term_usage string in bisect_terms() * Use return error() every where instead of die() * Improving readability of a message in bisect_terms() * bisect_start(): fix some typos, remove has_double_dash, join the two if branches, fix the bug when it should be terms->term_bad, decomposed it into smaller functions by introducing bisect_append_log() A big thanks to Stephan and Ramsay for patiently reviewing my series and helping me get this merged. [1]: https://public-inbox.org/git/0102015ecc65d695-22151d3b-752b-4c10-a3a3-b8ef52491664-000...@eu-west-1.amazonses.com/ [2]: git://repo.or.cz/git/raj.git Regards, Pranit Bauva --- builtin/bisect--helper.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++- git-bisect.sh | 28 ++------------------------- 2 files changed, 50 insertions(+), 27 deletions(-) diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c index 35d2105f941c6..12754448f7b6a 100644 --- a/builtin/bisect--helper.c +++ b/builtin/bisect--helper.c @@ -3,15 +3,21 @@ #include "parse-options.h" #include "bisect.h" #include "refs.h" +#include "dir.h" +#include "argv-array.h" +#include "run-command.h" static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS") static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV") static GIT_PATH_FUNC(git_path_bisect_ancestors_ok, "BISECT_ANCESTORS_OK") +static GIT_PATH_FUNC(git_path_bisect_start, "BISECT_START") +static GIT_PATH_FUNC(git_path_bisect_head, "BISECT_HEAD") static const char * const git_bisect_helper_usage[] = { N_("git bisect--helper --next-all [--no-checkout]"), N_("git bisect--helper --write-terms <bad_term> <good_term>"), N_("git bisect--helper --bisect-clean-state"), + N_("git bisect--helper --bisect-reset [<commit>]"), NULL }; @@ -106,13 +112,48 @@ static void check_expected_revs(const char **revs, int rev_nr) } } +static int bisect_reset(const char *commit) +{ + struct strbuf branch = STRBUF_INIT; + + if (!commit) { + if (strbuf_read_file(&branch, git_path_bisect_start(), 0) < 1) + return !printf(_("We are not bisecting.\n")); + strbuf_rtrim(&branch); + } else { + struct object_id oid; + + if (get_oid_commit(commit, &oid)) + return error(_("'%s' is not a valid commit"), commit); + strbuf_addstr(&branch, commit); + } + + if (!file_exists(git_path_bisect_head())) { + struct argv_array argv = ARGV_ARRAY_INIT; + + argv_array_pushl(&argv, "checkout", branch.buf, "--", NULL); + if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) { + error(_("Could not check out original HEAD '%s'. Try " + "'git bisect reset <commit>'."), branch.buf); + strbuf_release(&branch); + argv_array_clear(&argv); + return -1; + } + argv_array_clear(&argv); + } + + strbuf_release(&branch); + return bisect_clean_state(); +} + int cmd_bisect__helper(int argc, const char **argv, const char *prefix) { enum { NEXT_ALL = 1, WRITE_TERMS, BISECT_CLEAN_STATE, - CHECK_EXPECTED_REVS + CHECK_EXPECTED_REVS, + BISECT_RESET } cmdmode = 0; int no_checkout = 0; struct option options[] = { @@ -124,6 +165,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) 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_BOOL(0, "no-checkout", &no_checkout, N_("update BISECT_HEAD instead of checking out the current commit")), OPT_END() @@ -149,6 +192,10 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) 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); default: return error("BUG: unknown subcommand '%d'", cmdmode); } diff --git a/git-bisect.sh b/git-bisect.sh index 0138a8860e377..4d403242482cf 100755 --- a/git-bisect.sh +++ b/git-bisect.sh @@ -393,35 +393,11 @@ bisect_visualize() { eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES") } -bisect_reset() { - test -s "$GIT_DIR/BISECT_START" || { - gettextln "We are not bisecting." - return - } - case "$#" in - 0) branch=$(cat "$GIT_DIR/BISECT_START") ;; - 1) git rev-parse --quiet --verify "$1^{commit}" >/dev/null || { - invalid="$1" - die "$(eval_gettext "'\$invalid' is not a valid commit")" - } - branch="$1" ;; - *) - usage ;; - esac - - if ! test -f "$GIT_DIR/BISECT_HEAD" && ! git checkout "$branch" -- - then - die "$(eval_gettext "Could not check out original HEAD '\$branch'. -Try 'git bisect reset <commit>'.")" - fi - git bisect--helper --bisect-clean-state || exit -} - bisect_replay () { file="$1" test "$#" -eq 1 || die "$(gettext "No logfile given")" test -r "$file" || die "$(eval_gettext "cannot read \$file for replaying")" - bisect_reset + git bisect--helper --bisect-reset || exit while read git bisect command rev do test "$git $bisect" = "git bisect" || test "$git" = "git-bisect" || continue @@ -611,7 +587,7 @@ case "$#" in visualize|view) bisect_visualize "$@" ;; reset) - bisect_reset "$@" ;; + git bisect--helper --bisect-reset "$@" ;; replay) bisect_replay "$@" ;; log) -- https://github.com/git/git/pull/420
