Change the way the instruction parser works, allowing arbitrary
(action, operand) pairs to be parsed. So now, you can do:
pick fdc0b12 picked
revert 965fed4 anotherpick
For cherry-pick and revert, this means that a 'git cherry-pick
--continue' can continue an ongoing revert operation and viceversa.
This patch lays the foundation for extending the parser to support
more actions so 'git rebase -i' can reuse this machinery in the
future.
Helped-by: Jonathan Nieder <jrnider@xxxxxxxxx>
Acked-by: Jonathan Nieder <jrnider@xxxxxxxxx>
Signed-off-by: Ramkumar Ramachandra <artagnon@xxxxxxxxx>
---
builtin/revert.c | 128 ++++++++++++++++++--------------------
sequencer.h | 8 +++
t/t3510-cherry-pick-sequence.sh | 58 ++++++++++++++++++
3 files changed, 127 insertions(+), 67 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index f44f749..483c957 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -39,7 +39,6 @@ static const char * const cherry_pick_usage[] = {
NULL
};
-enum replay_action { REVERT, CHERRY_PICK };
enum replay_subcommand { REPLAY_NONE, REPLAY_RESET, REPLAY_CONTINUE };
struct replay_opts {
@@ -68,14 +67,14 @@ struct replay_opts {
static const char *action_name(const struct replay_opts *opts)
{
- return opts->action == REVERT ? "revert" : "cherry-pick";
+ return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick";
}
static char *get_encoding(const char *message);
static const char * const *revert_or_cherry_pick_usage(struct replay_opts *opts)
{
- return opts->action == REVERT ? revert_usage : cherry_pick_usage;
+ return opts->action == REPLAY_REVERT ? revert_usage : cherry_pick_usage;
}
static int option_parse_x(const struct option *opt,
@@ -154,7 +153,7 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
OPT_END(),
};
- if (opts->action == CHERRY_PICK) {
+ if (opts->action == REPLAY_PICK) {
struct option cp_extra[] = {
OPT_BOOLEAN('x', NULL, &opts->record_origin, "append commit name"),
OPT_BOOLEAN(0, "ff", &opts->allow_ff, "allow fast-forward"),
@@ -353,7 +352,7 @@ static int error_dirty_index(struct replay_opts *opts)
return error_resolve_conflict(action_name(opts));
/* Different translation strings for cherry-pick and revert */
- if (opts->action == CHERRY_PICK)
+ if (opts->action == REPLAY_PICK)
error(_("Your local changes would be overwritten by cherry-pick."));
else
error(_("Your local changes would be overwritten by revert."));
@@ -457,7 +456,8 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts)
return run_command_v_opt(args, RUN_GIT_CMD);
}
-static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
+static int do_pick_commit(struct commit *commit, enum replay_action action,
+ struct replay_opts *opts)
{
unsigned char head[20];
struct commit *base, *next, *parent;
@@ -517,7 +517,8 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
/* TRANSLATORS: The first %s will be "revert" or
"cherry-pick", the second %s a SHA1 */
return error(_("%s: cannot parse parent commit %s"),
- action_name(opts), sha1_to_hex(parent->object.sha1));
+ action == REPLAY_REVERT ? "revert" : "cherry-pick",
+ sha1_to_hex(parent->object.sha1));
if (get_message(commit, &msg) != 0)
return error(_("Cannot get commit message for %s"),
@@ -532,7 +533,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
defmsg = git_pathdup("MERGE_MSG");
- if (opts->action == REVERT) {
+ if (action == REPLAY_REVERT) {
base = commit;
base_label = msg.label;
next = parent;
@@ -575,7 +576,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
write_cherry_pick_head(commit);
}
- if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REVERT) {
+ if (!opts->strategy || !strcmp(opts->strategy, "recursive") || action == REPLAY_REVERT) {
res = do_recursive_merge(base, next, base_label, next_label,
head, &msgbuf, opts);
write_message(&msgbuf, defmsg);
@@ -594,7 +595,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
}
if (res) {
- error(opts->action == REVERT
+ error(action == REPLAY_REVERT
? _("could not revert %s... %s")
: _("could not apply %s... %s"),
find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV),
@@ -618,7 +619,7 @@ static void prepare_revs(struct rev_info *revs, struct replay_opts *opts)
init_revisions(revs, NULL);
revs->no_walk = 1;
- if (opts->action != REVERT)
+ if (opts->action != REPLAY_REVERT)
revs->reverse = 1;
argc = setup_revisions(opts->commit_argc, opts->commit_argv, revs, NULL);
@@ -664,88 +665,81 @@ static void read_and_refresh_cache(struct replay_opts *opts)
* assert(commit_list_count(list) == 2);
* return list;
*/
-struct commit_list **commit_list_append(struct commit *commit,
- struct commit_list **next)
+struct replay_insn_list **replay_insn_list_append(enum replay_action action,
+ struct commit *operand,
+ struct replay_insn_list **next)
{
- struct commit_list *new = xmalloc(sizeof(struct commit_list));
- new->item = commit;
+ struct replay_insn_list *new = xmalloc(sizeof(*new));
+ new->action = action;
+ new->operand = operand;
*next = new;
new->next = NULL;
return &new->next;
}
-static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
- struct replay_opts *opts)
+static int format_todo(struct strbuf *buf, struct replay_insn_list *todo_list)
{
- struct commit_list *cur = NULL;
- struct commit_message msg = { NULL, NULL, NULL, NULL, NULL };
- const char *sha1_abbrev = NULL;
- const char *action_str = opts->action == REVERT ? "revert" : "pick";
+ struct replay_insn_list *cur;
for (cur = todo_list; cur; cur = cur->next) {
- sha1_abbrev = find_unique_abbrev(cur->item->object.sha1, DEFAULT_ABBREV);
- if (get_message(cur->item, &msg))
+ const char *sha1_abbrev, *action_str;
+ struct commit_message msg = { NULL, NULL, NULL, NULL, NULL };
+
+ action_str = cur->action == REPLAY_REVERT ? "revert" : "pick";
+ sha1_abbrev = find_unique_abbrev(cur->operand->object.sha1, DEFAULT_ABBREV);
+ if (get_message(cur->operand, &msg))
return error(_("Cannot get commit message for %s"), sha1_abbrev);
strbuf_addf(buf, "%s %s %s\n", action_str, sha1_abbrev, msg.subject);
+ free_message(&msg);
}
- free_message(&msg);
return 0;
}
-static struct commit *parse_insn_line(char *start, struct replay_opts *opts)
+static int parse_insn_line(char *start, struct replay_insn_list *item)
{
unsigned char commit_sha1[20];
char sha1_abbrev[40];
- enum replay_action action;
char *p = start, *q, *end = strchrnul(start, '\n');
if (!prefixcmp(start, "pick ")) {
- action = CHERRY_PICK;
+ item->action = REPLAY_PICK;
p += strlen("pick ");
} else if (!prefixcmp(start, "revert ")) {
- action = REVERT;
+ item->action = REPLAY_REVERT;
p += strlen("revert ");
} else
- return NULL;
+ return error(_("Unrecognized action: %s"), start);
q = strchrnul(p, ' ');
if (q > end)
q = end;
if (q - p + 1 > sizeof(sha1_abbrev))
- return NULL;
+ return error(_("Object name too large: %s"), p);
memcpy(sha1_abbrev, p, q - p);
sha1_abbrev[q - p] = '\0';
- /*
- * Verify that the action matches up with the one in
- * opts; we don't support arbitrary instructions
- */
- if (action != opts->action) {
- const char *action_str;
- action_str = action == REVERT ? "revert" : "cherry-pick";
- error(_("Cannot %s during a %s"), action_str, action_name(opts));
- return NULL;
- }
-
if (get_sha1(sha1_abbrev, commit_sha1) < 0)
- return NULL;
+ return error(_("Malformed object name: %s"), sha1_abbrev);
+
+ item->operand = lookup_commit_reference(commit_sha1);
+ if (!item->operand)
+ return error(_("Not a valid commit: %s"), sha1_abbrev);
- return lookup_commit_reference(commit_sha1);
+ item->next = NULL;
+ return 0;
}
-static int parse_insn_buffer(char *buf, struct commit_list **todo_list,
- struct replay_opts *opts)
+static int parse_insn_buffer(char *buf, struct replay_insn_list **todo_list)
{
- struct commit_list **next = todo_list;
- struct commit *commit;
+ struct replay_insn_list **next = todo_list;
+ struct replay_insn_list item = {0, NULL, NULL};
char *p = buf;
int i;
for (i = 1; *p; i++) {
- commit = parse_insn_line(p, opts);
- if (!commit)
+ if (parse_insn_line(p, &item) < 0)
return error(_("Could not parse line %d."), i);
- next = commit_list_append(commit, next);
+ next = replay_insn_list_append(item.action, item.operand, next);
p = strchrnul(p, '\n');
if (*p)
p++;
@@ -755,8 +749,7 @@ static int parse_insn_buffer(char *buf, struct commit_list **todo_list,
return 0;
}
-static void read_populate_todo(struct commit_list **todo_list,
- struct replay_opts *opts)
+static void read_populate_todo(struct replay_insn_list **todo_list)
{
const char *todo_file = git_path(SEQ_TODO_FILE);
struct strbuf buf = STRBUF_INIT;
@@ -772,7 +765,7 @@ static void read_populate_todo(struct commit_list **todo_list,
}
close(fd);
- res = parse_insn_buffer(buf.buf, todo_list, opts);
+ res = parse_insn_buffer(buf.buf, todo_list);
strbuf_release(&buf);
if (res)
die(_("Unusable instruction sheet: %s"), todo_file);
@@ -821,18 +814,18 @@ static void read_populate_opts(struct replay_opts **opts_ptr)
die(_("Malformed options sheet: %s"), opts_file);
}
-static void walk_revs_populate_todo(struct commit_list **todo_list,
+static void walk_revs_populate_todo(struct replay_insn_list **todo_list,
struct replay_opts *opts)
{
struct rev_info revs;
struct commit *commit;
- struct commit_list **next;
+ struct replay_insn_list **next;
prepare_revs(&revs, opts);
next = todo_list;
while ((commit = get_revision(&revs)))
- next = commit_list_append(commit, next);
+ next = replay_insn_list_append(opts->action, commit, next);
}
static int create_seq_dir(void)
@@ -861,7 +854,7 @@ static void save_head(const char *head)
die(_("Error wrapping up %s."), head_file);
}
-static void save_todo(struct commit_list *todo_list, struct replay_opts *opts)
+static void save_todo(struct replay_insn_list *todo_list)
{
const char *todo_file = git_path(SEQ_TODO_FILE);
static struct lock_file todo_lock;
@@ -869,7 +862,7 @@ static void save_todo(struct commit_list *todo_list, struct replay_opts *opts)
int fd;
fd = hold_lock_file_for_update(&todo_lock, todo_file, LOCK_DIE_ON_ERROR);
- if (format_todo(&buf, todo_list, opts) < 0)
+ if (format_todo(&buf, todo_list) < 0)
die(_("Could not format %s."), todo_file);
if (write_in_full(fd, buf.buf, buf.len) < 0) {
strbuf_release(&buf);
@@ -913,9 +906,10 @@ static void save_opts(struct replay_opts *opts)
}
}
-static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
+static int pick_commits(struct replay_insn_list *todo_list,
+ struct replay_opts *opts)
{
- struct commit_list *cur;
+ struct replay_insn_list *cur;
int res;
setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
@@ -925,8 +919,8 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
read_and_refresh_cache(opts);
for (cur = todo_list; cur; cur = cur->next) {
- save_todo(cur, opts);
- res = do_pick_commit(cur->item, opts);
+ save_todo(cur);
+ res = do_pick_commit(cur->operand, cur->action, opts);
if (res) {
if (!cur->next && res > 0)
/*
@@ -951,7 +945,7 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
static int pick_revisions(struct replay_opts *opts)
{
- struct commit_list *todo_list = NULL;
+ struct replay_insn_list *todo_list = NULL;
unsigned char sha1[20];
read_and_refresh_cache(opts);
@@ -968,7 +962,7 @@ static int pick_revisions(struct replay_opts *opts)
if (!file_exists(git_path(SEQ_TODO_FILE)))
goto error;
read_populate_opts(&opts);
- read_populate_todo(&todo_list, opts);
+ read_populate_todo(&todo_list);
/* Verify that the conflict has been resolved */
if (!index_differs_from("HEAD", 0))
@@ -988,7 +982,7 @@ static int pick_revisions(struct replay_opts *opts)
return -1;
}
if (get_sha1("HEAD", sha1)) {
- if (opts->action == REVERT)
+ if (opts->action == REPLAY_REVERT)
return error(_("Can't revert as initial commit"));
return error(_("Can't cherry-pick into empty head"));
}
@@ -1008,7 +1002,7 @@ int cmd_revert(int argc, const char **argv, const char *prefix)
memset(&opts, 0, sizeof(opts));
if (isatty(0))
opts.edit = 1;
- opts.action = REVERT;
+ opts.action = REPLAY_REVERT;
git_config(git_default_config, NULL);
parse_args(argc, argv, &opts);
res = pick_revisions(&opts);
@@ -1023,7 +1017,7 @@ int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
int res;
memset(&opts, 0, sizeof(opts));
- opts.action = CHERRY_PICK;
+ opts.action = REPLAY_PICK;
git_config(git_default_config, NULL);
parse_args(argc, argv, &opts);
res = pick_revisions(&opts);
diff --git a/sequencer.h b/sequencer.h
index 905d295..f4db257 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -7,6 +7,14 @@
#define SEQ_TODO_FILE "sequencer/todo"
#define SEQ_OPTS_FILE "sequencer/opts"
+enum replay_action { REPLAY_REVERT, REPLAY_PICK };
+
+struct replay_insn_list {
+ enum replay_action action;
+ struct commit *operand;
+ struct replay_insn_list *next;
+};
+
/*
* Removes SEQ_OLD_DIR and renames SEQ_DIR to SEQ_OLD_DIR, ignoring
* any errors. Intended to be used by 'git reset'.
diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh
index bc5f0b8..bc7fb13 100755
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -240,4 +240,62 @@ test_expect_success 'missing commit descriptions in instruction sheet' '
test_cmp expect actual
'
+test_expect_success 'revert --continue continues after cherry-pick' '
+ pristine_detach initial &&
+ test_must_fail git cherry-pick base..anotherpick &&
+ echo "c" >foo &&
+ git add foo &&
+ git commit &&
+ git revert --continue &&
+ test_path_is_missing .git/sequencer &&
+ {
+ git rev-list HEAD |
+ git diff-tree --root --stdin |
+ sed "s/$_x40/OBJID/g"
+ } >actual &&
+ cat >expect <<-\EOF &&
+ OBJID
+ :100644 100644 OBJID OBJID M foo
+ OBJID
+ :100644 100644 OBJID OBJID M foo
+ OBJID
+ :100644 100644 OBJID OBJID M unrelated
+ OBJID
+ :000000 100644 OBJID OBJID A foo
+ :000000 100644 OBJID OBJID A unrelated
+ EOF
+ test_cmp expect actual
+'
+
+test_expect_success 'mixed pick and revert instructions' '
+ pristine_detach initial &&
+ test_must_fail git cherry-pick base..anotherpick &&
+ echo "c" >foo &&
+ git add foo &&
+ git commit &&
+ oldsha=`git rev-parse --short HEAD~1` &&
+ echo "revert $oldsha unrelatedpick" >>.git/sequencer/todo &&
+ git cherry-pick --continue &&
+ test_path_is_missing .git/sequencer &&
+ {
+ git rev-list HEAD |
+ git diff-tree --root --stdin |
+ sed "s/$_x40/OBJID/g"
+ } >actual &&
+ cat >expect <<-\EOF &&
+ OBJID
+ :100644 100644 OBJID OBJID M unrelated
+ OBJID
+ :100644 100644 OBJID OBJID M foo
+ OBJID
+ :100644 100644 OBJID OBJID M foo
+ OBJID
+ :100644 100644 OBJID OBJID M unrelated
+ OBJID
+ :000000 100644 OBJID OBJID A foo
+ :000000 100644 OBJID OBJID A unrelated
+ EOF
+ test_cmp expect actual
+'
+
test_done
--
1.7.6.351.gb35ac.dirty
--
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