[RFC/PATCH] bisect--helper: `bisect_clean_state` shell function in C
- From
Pranit Bauva <pranit.bauva@gmail.com>
- Date
- May 30, 2016, 18:21 UTC
- Message-ID
- <20160530182148.18801-1-pranit.bauva@gmail.com>
Reimplement `bisect_clean_state` shell function in C and add a `bisect-clean-state` subcommand to `git bisect--helper` to call it from git-bisect.sh .
Using `bisect_clean_state` subcommand is a measure to port shell function to C so as to use the existing test suite. As more functions are ported, this subcommand will be retired and will be called by bisect_reset() and bisect_start().
Mentored-by: Lars Schneider <larsxschneider@gmail.com> Mentored-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Pranit Bauva <pranit.bauva@gmail.com> --- This patch contains a bug. I have tried to identify the bug and I suppose it exists in do_for_each_entry_in_dir(). I have reproduced the debugging session at this link[1]. I have seen that some patches in mailing list regarding iterating over refs. Will those affect this? Or is this bug fixed in those patches?
[1]: http://paste.ubuntu.com/16830752/
builtin/bisect--helper.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++- git-bisect.sh | 26 +++---------------------- 2 files changed, 52 insertions(+), 24 deletions(-)
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c index 2b21c02..a20c9a5 100644 --- a/builtin/bisect--helper.c +++ b/builtin/bisect--helper.c @@ -3,10 +3,21 @@ #include "parse-options.h" #include "bisect.h" #include "refs.h" +#include "dir.h" + +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_log, "BISECT_LOG") +static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES") +static GIT_PATH_FUNC(git_path_bisect_run, "BISECT_RUN") +static GIT_PATH_FUNC(git_path_bisect_terms, "BISECT_TERMS") +static GIT_PATH_FUNC(git_path_head_name, "head-name") +static GIT_PATH_FUNC(git_path_bisect_start, "BISECT_START") 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"), NULL }; @@ -79,11 +90,42 @@ int write_terms(const char *bad, const char *good) strbuf_release(&content); return (res < 0) ? -1 : 0; } + +int remove_bisect_ref(const char *refname, const struct object_id *oid, + int flag, void *cb_data) +{ + char *ref; + ref = xstrfmt("refs/bisect/%s", refname); + if (delete_ref(ref, oid->hash, flag)) + return error(_("couldn't delete the ref %s\n"), ref); + return 0; +} + +int bisect_clean_state(void) +{ + for_each_ref_in("refs/bisect/", remove_bisect_ref, NULL); + + remove_path(git_path_bisect_expected_rev()); + remove_path(git_path_bisect_ancestors_ok()); + remove_path(git_path_bisect_log()); + remove_path(git_path_bisect_names()); + remove_path(git_path_bisect_run()); + remove_path(git_path_bisect_terms()); + /* Cleanup head-name if it got left by an old version of git-bisect */ + remove_path(git_path_head_name()); + delete_ref("BISECT_HEAD", NULL, 0); + /* Cleanup BISECT_START last */ + remove_path(git_path_bisect_start()); + + return 0; +} + int cmd_bisect__helper(int argc, const char **argv, const char *prefix) { enum { NEXT_ALL = 1, - WRITE_TERMS + WRITE_TERMS, + BISECT_CLEAN_STATE } cmdmode = 0; int no_checkout = 0; struct option options[] = { @@ -91,6 +133,8 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) 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_BOOL(0, "no-checkout", &no_checkout, N_("update BISECT_HEAD instead of checking out the current commit")), OPT_END() @@ -109,6 +153,10 @@ int cmd_bisect__helper(int argc, const char **argv, const char *prefix) if (argc != 2) die(_("--write-terms requires two arguments")); return write_terms(argv[0], argv[1]); + case BISECT_CLEAN_STATE: + if (argc != 0) + die(_("--bisect-clean-state requires no arguments")); + return bisect_clean_state(); default: die("BUG: unknown subcommand '%d'", cmdmode); } diff --git a/git-bisect.sh b/git-bisect.sh index 2dd7ec5..a937d1c 100755 --- a/git-bisect.sh +++ b/git-bisect.sh @@ -187,7 +187,7 @@ bisect_start() { # # Get rid of any old bisect state. # - bisect_clean_state || exit + git bisect--helper --bisect-clean-state || exit # # Change state. @@ -196,7 +196,7 @@ bisect_start() { # We have to trap this to be able to clean up using # "bisect_clean_state". # - trap 'bisect_clean_state' 0 + trap 'git bisect--helper --bisect-clean-state' 0 trap 'exit 255' 1 2 3 15 # @@ -430,27 +430,7 @@ bisect_reset() { die "$(eval_gettext "Could not check out original HEAD '\$branch'. Try 'git bisect reset <commit>'.")" fi - bisect_clean_state -} - -bisect_clean_state() { - # There may be some refs packed during bisection. - git for-each-ref --format='%(refname) %(objectname)' refs/bisect/\* | - while read ref hash - do - git update-ref -d $ref $hash || exit - done - rm -f "$GIT_DIR/BISECT_EXPECTED_REV" && - rm -f "$GIT_DIR/BISECT_ANCESTORS_OK" && - rm -f "$GIT_DIR/BISECT_LOG" && - rm -f "$GIT_DIR/BISECT_NAMES" && - rm -f "$GIT_DIR/BISECT_RUN" && - rm -f "$GIT_DIR/BISECT_TERMS" && - # Cleanup head-name if it got left by an old version of git-bisect - rm -f "$GIT_DIR/head-name" && - git update-ref -d --no-deref BISECT_HEAD && - # clean up BISECT_START last - rm -f "$GIT_DIR/BISECT_START" + git bisect--helper --bisect-clean-state || exit } bisect_replay () {
-- 2.8.3