* [PATCH 1/5] revert: free msg in format_todo()
From: Ramkumar Ramachandra @ 2011-10-22 19:13 UTC (permalink / raw)
To: Git List; +Cc: Junio C Hamano, Jonathan Nieder, Christian Couder
In-Reply-To: <1319310826-508-1-git-send-email-artagnon@gmail.com>
Memory allocated to the fields of msg by get_message() isn't freed.
This is potentially a big leak, because fresh memory is allocated to
store the commit message for each commit. Fix this using
free_message().
Reported-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
builtin/revert.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index 87df70e..a6f2ea7 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -689,6 +689,7 @@ static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
if (get_message(cur->item, &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);
}
return 0;
}
--
1.7.6.351.gb35ac.dirty
^ permalink raw reply related
* [PATCH v3 0/5] Sequencer fixups mini-series
From: Ramkumar Ramachandra @ 2011-10-22 19:13 UTC (permalink / raw)
To: Git List; +Cc: Junio C Hamano, Jonathan Nieder, Christian Couder
Hi,
This is the third iteration of the series, with one change since the
previous round: the 3rd and 4th parts have been squashed together as
suggested by Junio and Jonathan. As a result, it's a five-part series
instead of a six-part series now.
Second iteration: $gmane/183962
First iteration: $gmane/183157
Thanks.
Jonathan Nieder (1):
revert: simplify communicating command-line arguments
Ramkumar Ramachandra (4):
revert: free msg in format_todo()
revert: simplify getting commit subject in format_todo()
revert: make commit subjects in insn sheet optional
revert: allow mixed pick and revert instructions
builtin/revert.c | 221 +++++++++++++++++++--------------------
sequencer.h | 8 ++
t/t3510-cherry-pick-sequence.sh | 86 +++++++++++++++
3 files changed, 203 insertions(+), 112 deletions(-)
--
1.7.6.351.gb35ac.dirty
^ permalink raw reply
* [PATCH 2/5] revert: simplify getting commit subject in format_todo()
From: Ramkumar Ramachandra @ 2011-10-22 19:13 UTC (permalink / raw)
To: Git List; +Cc: Junio C Hamano, Jonathan Nieder, Christian Couder
In-Reply-To: <1319310826-508-1-git-send-email-artagnon@gmail.com>
format_todo() calls get_message(), but uses only the subject line of
the commit message. Save work and unnecessary memory allocations by
using find_commit_subject() instead.
Suggested-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
builtin/revert.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index a6f2ea7..efa8d00 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -680,16 +680,16 @@ static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
struct replay_opts *opts)
{
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";
+ const char *subject;
+ int subject_len;
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))
- 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);
+ subject_len = find_commit_subject(cur->item->buffer, &subject);
+ strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev,
+ subject_len, subject);
}
return 0;
}
--
1.7.6.351.gb35ac.dirty
^ permalink raw reply related
* [PATCH 3/5] revert: make commit subjects in insn sheet optional
From: Ramkumar Ramachandra @ 2011-10-22 19:13 UTC (permalink / raw)
To: Git List; +Cc: Junio C Hamano, Jonathan Nieder, Christian Couder
In-Reply-To: <1319310826-508-1-git-send-email-artagnon@gmail.com>
Change the instruction sheet format subtly so that the subject of the
commit message that follows the object name is optional. As a result,
an instruction sheet like this is now perfectly valid:
pick 35b0426
pick fbd5bbcbc2e
pick 7362160f
While at it, also fix a bug: currently, we use a commit-id-shaped
buffer to store the word after "pick" in '.git/sequencer/todo'. This
is both wasteful and wrong because it places an artificial limit on
the line length. Eliminate the need for the buffer altogether, and
add a test demonstrating this.
[jc: simplify parsing]
Suggested-by: Jonathan Nieder <jrnieder@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
builtin/revert.c | 37 ++++++++++++++++---------------------
t/t3510-cherry-pick-sequence.sh | 28 ++++++++++++++++++++++++++++
2 files changed, 44 insertions(+), 21 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index efa8d00..14462ca 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -694,31 +694,27 @@ static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
return 0;
}
-static struct commit *parse_insn_line(char *start, struct replay_opts *opts)
+static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts)
{
unsigned char commit_sha1[20];
- char sha1_abbrev[40];
enum replay_action action;
- int insn_len = 0;
- char *p, *q;
+ char *end_of_object_name;
+ int saved, status;
- if (!prefixcmp(start, "pick ")) {
+ if (!prefixcmp(bol, "pick ")) {
action = CHERRY_PICK;
- insn_len = strlen("pick");
- p = start + insn_len + 1;
- } else if (!prefixcmp(start, "revert ")) {
+ bol += strlen("pick ");
+ } else if (!prefixcmp(bol, "revert ")) {
action = REVERT;
- insn_len = strlen("revert");
- p = start + insn_len + 1;
+ bol += strlen("revert ");
} else
return NULL;
- q = strchr(p, ' ');
- if (!q)
- return NULL;
- q++;
-
- strlcpy(sha1_abbrev, p, q - p);
+ end_of_object_name = bol + strcspn(bol, " \n");
+ saved = *end_of_object_name;
+ *end_of_object_name = '\0';
+ status = get_sha1(bol, commit_sha1);
+ *end_of_object_name = saved;
/*
* Verify that the action matches up with the one in
@@ -731,7 +727,7 @@ static struct commit *parse_insn_line(char *start, struct replay_opts *opts)
return NULL;
}
- if (get_sha1(sha1_abbrev, commit_sha1) < 0)
+ if (status < 0)
return NULL;
return lookup_commit_reference(commit_sha1);
@@ -746,13 +742,12 @@ static int parse_insn_buffer(char *buf, struct commit_list **todo_list,
int i;
for (i = 1; *p; i++) {
- commit = parse_insn_line(p, opts);
+ char *eol = strchrnul(p, '\n');
+ commit = parse_insn_line(p, eol, opts);
if (!commit)
return error(_("Could not parse line %d."), i);
next = commit_list_append(commit, next);
- p = strchrnul(p, '\n');
- if (*p)
- p++;
+ p = *eol ? eol + 1 : eol;
}
if (!*todo_list)
return error(_("No commits parsed."));
diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh
index 3bca2b3..39b55c1 100755
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -12,6 +12,9 @@ test_description='Test cherry-pick continuation features
. ./test-lib.sh
+# Repeat first match 10 times
+_r10='\1\1\1\1\1\1\1\1\1\1'
+
pristine_detach () {
git cherry-pick --reset &&
git checkout -f "$1^0" &&
@@ -211,4 +214,29 @@ test_expect_success 'malformed instruction sheet 2' '
test_must_fail git cherry-pick --continue
'
+test_expect_success 'malformed instruction sheet 3' '
+ pristine_detach initial &&
+ test_must_fail git cherry-pick base..anotherpick &&
+ echo "resolved" >foo &&
+ git add foo &&
+ git commit &&
+ sed "s/pick \([0-9a-f]*\)/pick $_r10/" .git/sequencer/todo >new_sheet &&
+ cp new_sheet .git/sequencer/todo &&
+ test_must_fail git cherry-pick --continue
+'
+
+test_expect_success 'commit descriptions in insn sheet are optional' '
+ pristine_detach initial &&
+ test_must_fail git cherry-pick base..anotherpick &&
+ echo "c" >foo &&
+ git add foo &&
+ git commit &&
+ cut -d" " -f1,2 .git/sequencer/todo >new_sheet &&
+ cp new_sheet .git/sequencer/todo &&
+ git cherry-pick --continue &&
+ test_path_is_missing .git/sequencer &&
+ git rev-list HEAD >commits
+ test_line_count = 4 commits
+'
+
test_done
--
1.7.6.351.gb35ac.dirty
^ permalink raw reply related
* [PATCH 4/5] revert: allow mixed pick and revert instructions
From: Ramkumar Ramachandra @ 2011-10-22 19:13 UTC (permalink / raw)
To: Git List; +Cc: Junio C Hamano, Jonathan Nieder, Christian Couder
In-Reply-To: <1319310826-508-1-git-send-email-artagnon@gmail.com>
Parse the instruction sheet in '.git/sequencer/todo' as a list of
(action, operand) pairs, instead of assuming that all instructions use
the same action. 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. While at it, also improve the error messages reported by the
insn sheet parser.
Helped-by: Jonathan Nieder <jrnider@gmail.com>
Acked-by: Jonathan Nieder <jrnider@gmail.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
builtin/revert.c | 132 +++++++++++++++++++--------------------
sequencer.h | 8 +++
t/t3510-cherry-pick-sequence.sh | 58 +++++++++++++++++
3 files changed, 130 insertions(+), 68 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index 14462ca..8c3e4fc 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,
@@ -152,7 +151,7 @@ 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"),
@@ -348,7 +347,7 @@ 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."));
@@ -452,7 +451,8 @@ 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;
@@ -527,7 +527,7 @@ 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;
@@ -568,7 +568,7 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
}
}
- 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);
@@ -592,11 +592,11 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
* However, if the merge did not even start, then we don't want to
* write it at all.
*/
- if (opts->action == CHERRY_PICK && !opts->no_commit && (res == 0 || res == 1))
+ if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1))
write_cherry_pick_head(commit);
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),
@@ -620,7 +620,7 @@ 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);
@@ -666,49 +666,53 @@ static void read_and_refresh_cache(struct replay_opts *opts)
* assert(commit_list_count(list) == 2);
* return list;
*/
-static struct commit_list **commit_list_append(struct commit *commit,
- struct commit_list **next)
+static 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;
- const char *sha1_abbrev = NULL;
- const char *action_str = opts->action == REVERT ? "revert" : "pick";
- const char *subject;
- int subject_len;
+ struct replay_insn_list *cur;
for (cur = todo_list; cur; cur = cur->next) {
- sha1_abbrev = find_unique_abbrev(cur->item->object.sha1, DEFAULT_ABBREV);
- subject_len = find_commit_subject(cur->item->buffer, &subject);
+ const char *sha1_abbrev, *action_str, *subject;
+ int subject_len;
+
+ action_str = cur->action == REPLAY_REVERT ? "revert" : "pick";
+ sha1_abbrev = find_unique_abbrev(cur->operand->object.sha1, DEFAULT_ABBREV);
+ subject_len = find_commit_subject(cur->operand->buffer, &subject);
strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev,
subject_len, subject);
}
return 0;
}
-static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts)
+static int parse_insn_line(char *bol, char *eol, struct replay_insn_list *item)
{
unsigned char commit_sha1[20];
- enum replay_action action;
char *end_of_object_name;
int saved, status;
if (!prefixcmp(bol, "pick ")) {
- action = CHERRY_PICK;
+ item->action = REPLAY_PICK;
bol += strlen("pick ");
} else if (!prefixcmp(bol, "revert ")) {
- action = REVERT;
+ item->action = REPLAY_REVERT;
bol += strlen("revert ");
- } else
- return NULL;
+ } else {
+ size_t len = strchrnul(bol, '\n') - bol;
+ if (len > 255)
+ len = 255;
+ return error(_("Unrecognized action: %.*s"), (int)len, bol);
+ }
end_of_object_name = bol + strcspn(bol, " \n");
saved = *end_of_object_name;
@@ -716,37 +720,29 @@ static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *
status = get_sha1(bol, commit_sha1);
*end_of_object_name = saved;
- /*
- * 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 (status < 0)
- return NULL;
+ return error(_("Malformed object name: %s"), bol);
- return lookup_commit_reference(commit_sha1);
+ item->operand = lookup_commit_reference(commit_sha1);
+ if (!item->operand)
+ return error(_("Not a valid commit: %s"), bol);
+
+ 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++) {
char *eol = strchrnul(p, '\n');
- commit = parse_insn_line(p, eol, opts);
- if (!commit)
- return error(_("Could not parse line %d."), i);
- next = commit_list_append(commit, next);
+ if (parse_insn_line(p, eol, &item) < 0)
+ return error(_("on line %d."), i);
+ next = replay_insn_list_append(item.action, item.operand, next);
p = *eol ? eol + 1 : eol;
}
if (!*todo_list)
@@ -754,8 +750,7 @@ 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;
@@ -771,7 +766,7 @@ 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);
@@ -820,18 +815,18 @@ 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)
@@ -860,7 +855,7 @@ 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;
@@ -868,7 +863,7 @@ 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);
@@ -912,9 +907,10 @@ 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);
@@ -924,8 +920,8 @@ 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)
/*
@@ -950,7 +946,7 @@ 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);
@@ -967,7 +963,7 @@ 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))
@@ -987,7 +983,7 @@ 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"));
}
@@ -1007,7 +1003,7 @@ 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);
@@ -1022,7 +1018,7 @@ 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 39b55c1..4b12244 100755
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -239,4 +239,62 @@ test_expect_success 'commit descriptions in insn sheet are optional' '
test_line_count = 4 commits
'
+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
^ permalink raw reply related
* [PATCH 5/5] revert: simplify communicating command-line arguments
From: Ramkumar Ramachandra @ 2011-10-22 19:13 UTC (permalink / raw)
To: Git List; +Cc: Junio C Hamano, Jonathan Nieder, Christian Couder
In-Reply-To: <1319310826-508-1-git-send-email-artagnon@gmail.com>
From: Jonathan Nieder <jrnieder@gmail.com>
Currently, command-line arguments are communicated using (argc, argv)
until a prepare_revs() turns it into a terse structure. However,
since we plan to expose the cherry-picking machinery through a public
API in the future, we want callers to be able to call in with a
filled-in structure. For the revert builtin, this means that the
chief argument parser, parse_args(), should parse into such a
structure. Make this change.
[rr: minor improvements, commit message]
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
builtin/revert.c | 53 +++++++++++++++++++++++++++++------------------------
1 files changed, 29 insertions(+), 24 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index 8c3e4fc..df9459b 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -54,13 +54,14 @@ struct replay_opts {
int allow_rerere_auto;
int mainline;
- int commit_argc;
- const char **commit_argv;
/* Merge strategy */
const char *strategy;
const char **xopts;
size_t xopts_nr, xopts_alloc;
+
+ /* Only used by REPLAY_NONE */
+ struct rev_info *revs;
};
#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
@@ -161,9 +162,9 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
die(_("program error"));
}
- opts->commit_argc = parse_options(argc, argv, NULL, options, usage_str,
- PARSE_OPT_KEEP_ARGV0 |
- PARSE_OPT_KEEP_UNKNOWN);
+ argc = parse_options(argc, argv, NULL, options, usage_str,
+ PARSE_OPT_KEEP_ARGV0 |
+ PARSE_OPT_KEEP_UNKNOWN);
/* Check for incompatible subcommands */
verify_opt_mutually_compatible(me,
@@ -198,9 +199,6 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
NULL);
}
- else if (opts->commit_argc < 2)
- usage_with_options(usage_str, options);
-
if (opts->allow_ff)
verify_opt_compatible(me, "--ff",
"--signoff", opts->signoff,
@@ -208,7 +206,20 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
"-x", opts->record_origin,
"--edit", opts->edit,
NULL);
- opts->commit_argv = argv;
+
+ if (opts->subcommand == REPLAY_NONE) {
+ opts->revs = xmalloc(sizeof(*opts->revs));
+ init_revisions(opts->revs, NULL);
+ opts->revs->no_walk = 1;
+ if (argc < 2)
+ usage_with_options(usage_str, options);
+ argc = setup_revisions(argc, argv, opts->revs, NULL);
+ } else
+ opts->revs = NULL;
+
+ /* Forbid stray command-line arguments */
+ if (argc > 1)
+ usage_with_options(usage_str, options);
}
struct commit_message {
@@ -614,23 +625,15 @@ static int do_pick_commit(struct commit *commit, enum replay_action action,
return res;
}
-static void prepare_revs(struct rev_info *revs, struct replay_opts *opts)
+static void prepare_revs(struct replay_opts *opts)
{
- int argc;
-
- init_revisions(revs, NULL);
- revs->no_walk = 1;
if (opts->action != REPLAY_REVERT)
- revs->reverse = 1;
+ opts->revs->reverse ^= 1;
- argc = setup_revisions(opts->commit_argc, opts->commit_argv, revs, NULL);
- if (argc > 1)
- usage(*revert_or_cherry_pick_usage(opts));
-
- if (prepare_revision_walk(revs))
+ if (prepare_revision_walk(opts->revs))
die(_("revision walk setup failed"));
- if (!revs->commits)
+ if (!opts->revs->commits)
die(_("empty commit set passed"));
}
@@ -818,14 +821,13 @@ static void read_populate_opts(struct replay_opts **opts_ptr)
static void walk_revs_populate_todo(struct replay_insn_list **todo_list,
struct replay_opts *opts)
{
- struct rev_info revs;
struct commit *commit;
struct replay_insn_list **next;
- prepare_revs(&revs, opts);
+ prepare_revs(opts);
next = todo_list;
- while ((commit = get_revision(&revs)))
+ while ((commit = get_revision(opts->revs)))
next = replay_insn_list_append(opts->action, commit, next);
}
@@ -949,6 +951,9 @@ static int pick_revisions(struct replay_opts *opts)
struct replay_insn_list *todo_list = NULL;
unsigned char sha1[20];
+ if (opts->subcommand == REPLAY_NONE)
+ assert(opts->revs);
+
read_and_refresh_cache(opts);
/*
--
1.7.6.351.gb35ac.dirty
^ permalink raw reply related
* Re: [PATCH 1/2] credential-cache--daemon.c: Don't leave stale socket on --exit
From: Jeff King @ 2011-10-22 19:17 UTC (permalink / raw)
To: Ramsay Jones; +Cc: GIT Mailing-list
In-Reply-To: <4EA2FC63.9060602@ramsay1.demon.co.uk>
On Sat, Oct 22, 2011 at 06:24:51PM +0100, Ramsay Jones wrote:
> Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
> ---
> credential-cache--daemon.c | 23 ++++++++++++-----------
> 1 files changed, 12 insertions(+), 11 deletions(-)
Looks sane, and I'll probably squash it in. Alternatively, we could also
set a signal/exit handler to clean up our socket when we die. That would
also cover the error exit cases.
In either case, I think we need to handle stale sockets better. They
will happen eventually due to power loss or kill -9, anyway.
-Peff
^ permalink raw reply
* Re: [PATCH 2/2] credential-cache--daemon.c: unlink() a potentially stale unix socket
From: Jeff King @ 2011-10-22 19:19 UTC (permalink / raw)
To: Ramsay Jones; +Cc: GIT Mailing-list
In-Reply-To: <4EA2FCA0.70002@ramsay1.demon.co.uk>
On Sat, Oct 22, 2011 at 06:25:52PM +0100, Ramsay Jones wrote:
> diff --git a/credential-cache--daemon.c b/credential-cache--daemon.c
> index ee2c15a..c5fb1b2 100644
> --- a/credential-cache--daemon.c
> +++ b/credential-cache--daemon.c
> @@ -230,6 +230,7 @@ static void serve_cache(const char *socket_path)
> {
> int fd;
>
> + unlink(socket_path);
> fd = unix_stream_listen(socket_path);
> if (fd < 0)
> die_errno("unable to bind to '%s'", socket_path);
I think this is a sane thing to do, if it's more portable. We can just
get rid of the double-bind attempt in unix_stream_listen, now. I suspect
this unlink should probably just go directly into unix_stream_listen,
too.
-Peff
^ permalink raw reply
* [PATCHv2] git-gui: delegate selection from gutter columns to text output
From: Bert Wesarg @ 2011-10-22 19:38 UTC (permalink / raw)
To: Pat Thoyts; +Cc: git, Bert Wesarg
In-Reply-To: <CAKPyHN1zTJsE5-T5LdN=86iKdQ7=SGxuVacw8aE4DvmbX4srHw@mail.gmail.com>
Selecting in the gutter columns of the blame view should make no sense,
so delegate any selection action in these columns to the text output
by selecting whole lines there.
Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
---
git-gui.sh | 29 +++++++++++++++++++++++++++++
lib/blame.tcl | 20 +++++++++++++++-----
2 files changed, 44 insertions(+), 5 deletions(-)
diff --git a/git-gui.sh b/git-gui.sh
index 21033cb..53d6b43 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -2077,6 +2077,35 @@ proc many2scrollbar {list mode sb top bottom} {
foreach w $list {$w $mode moveto $top}
}
+# delegates mouse selection actions from gutter columns to the main text
+# widget
+# use delegator_bind, if you need to bind more actions
+proc delegate_sel_to {w from} {
+ set bind_list [list \
+ <Button-1> \
+ <B1-Motion> \
+ <Double-Button-1> \
+ <Triple-Button-1> \
+ <Shift-Button-1> \
+ <Double-Shift-Button-1> \
+ <Triple-Shift-Button-1> \
+ ]
+
+ foreach seq $bind_list {
+ set script [bind Text $seq]
+ set new_script [string map [list %W $w %x 0 word line] $script]
+ foreach f $from {
+ bind $f $seq "$new_script; focus $w; break"
+ }
+ }
+}
+
+# use this for binding any of the mouse actions from a delegator
+# see bind_list in delegate_sel_to
+proc delegator_bind {tag seq script} {
+ bind $tag $seq "$script; [bind $tag $seq]"
+}
+
proc incr_font_size {font {amt 1}} {
set sz [font configure $font -size]
incr sz $amt
diff --git a/lib/blame.tcl b/lib/blame.tcl
index b031e66..b7eb18a 100644
--- a/lib/blame.tcl
+++ b/lib/blame.tcl
@@ -210,6 +210,8 @@ constructor new {i_commit i_path i_jump} {
set w_columns [list $w_amov $w_asim $w_line $w_file]
+ delegate_sel_to $w_file [list $w_amov $w_asim $w_line]
+
${NS}::scrollbar $w.file_pane.out.sbx \
-orient h \
-command [list $w_file xview]
@@ -318,11 +320,19 @@ constructor new {i_commit i_path i_jump} {
$i conf -yscrollcommand \
"[list ::searchbar::scrolled $finder]
[list many2scrollbar $w_columns yview $w.file_pane.out.sby]"
- bind $i <Button-1> "
- [cb _hide_tooltip]
- [cb _click $i @%x,%y]
- focus $i
- "
+ if {$i eq $w_file} {
+ bind $i <Button-1> "
+ [cb _hide_tooltip]
+ [cb _click $i @%x,%y]
+ focus $i
+ "
+ } else {
+ delegator_bind $i <Button-1> "
+ [cb _hide_tooltip]
+ [cb _click $i @%x,%y]
+ focus $i
+ "
+ }
bind $i <Any-Motion> [cb _show_tooltip $i @%x,%y]
bind $i <Any-Enter> [cb _hide_tooltip]
bind $i <Any-Leave> [cb _hide_tooltip]
--
1.7.7.908.g383b5
^ permalink raw reply related
* [PATCH 2/2] git-gui: don't warn for detached head when rebasing
From: Bert Wesarg @ 2011-10-22 19:39 UTC (permalink / raw)
To: Pat Thoyts; +Cc: Heiko Voigt, git, Bert Wesarg
In-Reply-To: <0f4995b5df707782c73ec83171fb2f512ae887ef.1319312280.git.bert.wesarg@googlemail.com>
Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
---
lib/commit.tcl | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/lib/commit.tcl b/lib/commit.tcl
index e27e148..d679db4 100644
--- a/lib/commit.tcl
+++ b/lib/commit.tcl
@@ -263,7 +263,9 @@ proc commit_commitmsg {curHEAD msg_p} {
global is_detached repo_config
global pch_error
- if {$is_detached && [is_config_true gui.warndetachedcommit]} {
+ if {$is_detached
+ && ![file exists [gitdir [file join rebase-merge head-name]]]
+ && [is_config_true gui.warndetachedcommit]} {
set msg [mc "You are about to commit on a detached head.\
This is a potentially dangerous thing to do because if you switch\
to another branch you will loose your changes and it can be difficult\
--
1.7.7.908.g383b5
^ permalink raw reply related
* [PATCH 1/2] git-gui: make config gui.warndetachedcommit a boolean
From: Bert Wesarg @ 2011-10-22 19:39 UTC (permalink / raw)
To: Pat Thoyts; +Cc: Heiko Voigt, git, Bert Wesarg
Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
---
lib/commit.tcl | 2 +-
lib/option.tcl | 1 +
2 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/lib/commit.tcl b/lib/commit.tcl
index 372bed9..e27e148 100644
--- a/lib/commit.tcl
+++ b/lib/commit.tcl
@@ -263,7 +263,7 @@ proc commit_commitmsg {curHEAD msg_p} {
global is_detached repo_config
global pch_error
- if {$is_detached && $repo_config(gui.warndetachedcommit)} {
+ if {$is_detached && [is_config_true gui.warndetachedcommit]} {
set msg [mc "You are about to commit on a detached head.\
This is a potentially dangerous thing to do because if you switch\
to another branch you will loose your changes and it can be difficult\
diff --git a/lib/option.tcl b/lib/option.tcl
index 719103a..f7f866b 100644
--- a/lib/option.tcl
+++ b/lib/option.tcl
@@ -156,6 +156,7 @@ proc do_options {} {
{i-0..99 gui.commitmsgwidth {mc "Commit Message Text Width"}}
{t gui.newbranchtemplate {mc "New Branch Name Template"}}
{c gui.encoding {mc "Default File Contents Encoding"}}
+ {b gui.warndetachedcommit {mc "Warn before commiting to a detached head"}}
{s gui.stageuntracked {mc "Staging of untracked files"} {list "yes" "no" "ask"}}
} {
set type [lindex $option 0]
--
1.7.7.908.g383b5
^ permalink raw reply related
* Re: [PATCH 00/22] Refactor to accept NUL in commit messages
From: Junio C Hamano @ 2011-10-22 22:47 UTC (permalink / raw)
To: Nguyễn Thái Ngọc Duy
Cc: git, peff, Ævar Arnfjörð
In-Reply-To: <1319277881-4128-1-git-send-email-pclouds@gmail.com>
I do not think we want to go this route.
There are two possible approaches to attack this.
- If we want to show everything after a potential and rare NUL in the log
message most of the time, then "struct commit" should just store
<ptr,len> pair. This grows "struct commit" with one extra ulong.
- If we want to give us a way to notice and show these "funnily, this
commit log message has a NUL in it" case as an exception in only
selected codepaths, then "struct commit" should just gain "flags"
4-byte int field between "indegree" and "date", and
parse_commit_buffer() should set one bit in the flags when the log
message has NUL in it. And teach only these selected codepaths to find
the length from the object name with sha1_object_info() as needed. This
grows "struct commit" with one 4-byte int, with runtime overhead only
where it matters.
The approach taken by the patch wastes two malloc() blocks with their own
allocation overhead, and unused "alloc" field in the strbuf that does not
have to be there.
^ permalink raw reply
* Re: [PATCH 00/22] Refactor to accept NUL in commit messages
From: Nguyen Thai Ngoc Duy @ 2011-10-23 1:24 UTC (permalink / raw)
To: Junio C Hamano; +Cc: git, peff, Ævar Arnfjörð
In-Reply-To: <7vobx863v3.fsf@alter.siamese.dyndns.org>
2011/10/23 Junio C Hamano <gitster@pobox.com>:
> I do not think we want to go this route.
>
> There are two possible approaches to attack this.
>
> - If we want to show everything after a potential and rare NUL in the log
> message most of the time, then "struct commit" should just store
> <ptr,len> pair. This grows "struct commit" with one extra ulong.
>
> - If we want to give us a way to notice and show these "funnily, this
> commit log message has a NUL in it" case as an exception in only
> selected codepaths, then "struct commit" should just gain "flags"
> 4-byte int field between "indegree" and "date", and
> parse_commit_buffer() should set one bit in the flags when the log
> message has NUL in it. And teach only these selected codepaths to find
> the length from the object name with sha1_object_info() as needed. This
> grows "struct commit" with one 4-byte int, with runtime overhead only
> where it matters.
>
> The approach taken by the patch wastes two malloc() blocks with their own
> allocation overhead, and unused "alloc" field in the strbuf that does not
> have to be there.
We could allocate just one block with length as the first field:
struct commit_buffer {
unsigned long len;
char buf[FLEX_ARRAY];
};
The downside is commit_buffer field type in struct commit changes,
which impacts many codepaths. If we agree to allow NUL in commit
objects, then all codepaths should be aware of that fact, otherwise
funny things may happen because string processing in this function
stops early due to NUL, but others run fine..
Jeff's low-level normalization approach sounds much simpler, but
probably trickier because we need to identify where to normalize and
denormalize. At least with type change, the compiler spots all the
places for me.
I would not worry about runtime processing overhead. The string end
check is basically converted from "if (*msg)" to "if (msg < msg_end)".
There will one more pointer (msg_end) in stack for each call. Unless
we do deep recursion, we should be fine. Memory overhead is still
something to profile.
--
Duy
^ permalink raw reply
* git mergetool ignores configured command line
From: Alexander Vladimirov @ 2011-10-23 4:43 UTC (permalink / raw)
To: git
To configure diffuse as merge tool I set mergetool configuration using
following commands:
git config --global merge.tool diffuse
git config --global mergetool.diffuse.cmd '/usr/bin/diffuse "$LOCAL"
"$MERGED" "$REMOTE"'
Then, when I invoke mergetool during merge, I get diffuse with four
panes open as by default, instead of three specified in command line
setting.
Is this an expected behavior, and how can I force mergetool to use
provided command line?
^ permalink raw reply
* Re: [PATCH 00/22] Refactor to accept NUL in commit messages
From: Junio C Hamano @ 2011-10-23 5:51 UTC (permalink / raw)
To: Nguyen Thai Ngoc Duy; +Cc: git, peff, Ævar Arnfjörð
In-Reply-To: <CACsJy8B=TsC4A=R6b3jyYBCvorEDBYHQ8uA864WrB0-3pgNyKA@mail.gmail.com>
Nguyen Thai Ngoc Duy <pclouds@gmail.com> writes:
> We could allocate just one block with length as the first field:
>
> struct commit_buffer {
> unsigned long len;
> char buf[FLEX_ARRAY];
> };
>
> The downside is commit_buffer field type in struct commit changes,
> which impacts many codepaths.
I think that is a good thing overall to _force_ us to audit all the code,
*if* our goal were to avoid losing bytes. And the solution above is better
than adding a length field to "struct commit". It certainly is better than
quoting NUL byte to ^@, keep using the "char *" field and risking some
codepaths forget to convert it back to NUL. For types of payloads for
which losing everything after the first NUL matters, converting NUL to ^@
and then forgetting to convert it back to NUL is equally bad breakage to
the payload anyway, so such a conversion would not be a particularly good
approach to avoid losing bytes.
But as Jeff suggested, we should step back a bit and think what our goal
is.
The low level object format of our commit is textual header fields, each
of which is terminated with a LF, followed by a LF to mark the end of
header fields, and then opaque payload that can contain any bytes. It does
not forbid a non-Git application to reuse the object store infrastructure
to store ASN.1 binary goo there, and the low level interface we give such
as cat-file is a perfectly valid way to inspect such a "commit" object.
But when it comes to "Git" Porcelains (e.g. the log family of commands),
we do assume people do not store random binary byte sequences in commits,
and we do take advantage of that assumption by splitting each "line" at
LF, indenting them with 4 spaces, etc. In other words, a commit log in the
Git context _is_ pretty much text and not arbitrary byte sequence. Even
the "--pretty=raw" option for "log" family is not about the "raw" body;
the "raw"-ness applies only to the header fields. So even if we _were_ to
update the codepaths involved to avoid losing bytes, the end result will
not be useful for users to whom ability to include NUL matters.
So in that sense, I do not think it is unreasonable to chop it off at the
first NUL, which is the current behaviour. IOW, it is entirely sane to
argue that there is nothing to fix.
^ permalink raw reply
* Re: [PATCH 00/22] Refactor to accept NUL in commit messages
From: Nguyen Thai Ngoc Duy @ 2011-10-23 6:37 UTC (permalink / raw)
To: Junio C Hamano; +Cc: git, peff, Ævar Arnfjörð
In-Reply-To: <7vipng5k80.fsf@alter.siamese.dyndns.org>
On Sun, Oct 23, 2011 at 4:51 PM, Junio C Hamano <gitster@pobox.com> wrote:
> So in that sense, I do not think it is unreasonable to chop it off at the
> first NUL, which is the current behaviour. IOW, it is entirely sane to
> argue that there is nothing to fix.
Good for me too if we go this way. I was just curious what if we
changed commit_buffer field and got hooked in.
> But as Jeff suggested, we should step back a bit and think what our goal
> is.
>
> The low level object format of our commit is textual header fields, each
> of which is terminated with a LF, followed by a LF to mark the end of
> header fields, and then opaque payload that can contain any bytes. It does
> not forbid a non-Git application to reuse the object store infrastructure
> to store ASN.1 binary goo there, and the low level interface we give such
> as cat-file is a perfectly valid way to inspect such a "commit" object.
cat-file is fine, commit-tree (or any commands that call
commit_tree()) cuts at NUL though.
I wonder how git processes commit messages in utf-16. Did a quick
test, did not look good. But that's because git-commit cuts at NUL.
But even if git-commit makes a good object, I doubt if git-log shows
it right.
--
Duy
^ permalink raw reply
* Re: a bug when execute "git status" in git version 1.7.7.431.g89633
From: Matthieu Moy @ 2011-10-23 8:25 UTC (permalink / raw)
To: John Hsing; +Cc: git
In-Reply-To: <4EA20C5B.3090808@gmail.com>
John Hsing <tsyj2007@gmail.com> writes:
> the error:
When does this error occur? is it reproducible on any repository? Which
OS?
> git: malloc.c:3096: sYSMALLOc: Assertion `(old_top == (((mbinptr)
> (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct
> malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >=
> (unsigned long)((((__builtin_offsetof (struct malloc_chunk,
> fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) -
> 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask)
> == 0)' failed.
The assertion is violated outside the source code of Git itself, so
either Git calls malloc incorrectly, or this is a bug in your libc.
--
Matthieu Moy
http://www-verimag.imag.fr/~moy/
^ permalink raw reply
* Re: a bug when execute "git status" in git version 1.7.7.431.g89633
From: John Hsing @ 2011-10-23 8:35 UTC (permalink / raw)
To: Matthieu Moy; +Cc: git
In-Reply-To: <vpqfwiknmh3.fsf@bauges.imag.fr>
ok,when i finish compiling git 1.7.7.431.g89633，I use it to check
Cyanogenod（an Android mod source） by “git status”，it happend this
error！but when i reuse git v1.7.7，it is OK！so i think it is a bug in
git 1.7.7.431.g89633！My OS is Ubuntu Linux 10.10，sorry for my bad
english！ If you want to reproduce this error,please excute "git status"
in https://github.com/CyanogenMod/android_packages_apps_DSPManager.git
repo!
于2011年10月23日 星期日 16时25分28秒,Matthieu Moy写到:
> John Hsing <tsyj2007@gmail.com> writes:
>
>> the error:
>
> When does this error occur? is it reproducible on any repository? Which
> OS?
>
>> git: malloc.c:3096: sYSMALLOc: Assertion `(old_top == (((mbinptr)
>> (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct
>> malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >=
>> (unsigned long)((((__builtin_offsetof (struct malloc_chunk,
>> fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) -
>> 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask)
>> == 0)' failed.
>
> The assertion is violated outside the source code of Git itself, so
> either Git calls malloc incorrectly, or this is a bug in your libc.
>
^ permalink raw reply
* Re: git mergetool ignores configured command line
From: Andreas Schwab @ 2011-10-23 8:37 UTC (permalink / raw)
To: Alexander Vladimirov; +Cc: git
In-Reply-To: <CAARCrw6D7CKy2Jn43zUZ3EefyqdY6Tk4A39ZQ74H6hySA5eCBQ@mail.gmail.com>
Alexander Vladimirov <alexander.idkfa.vladimirov@gmail.com> writes:
> To configure diffuse as merge tool I set mergetool configuration using
> following commands:
>
> git config --global merge.tool diffuse
> git config --global mergetool.diffuse.cmd '/usr/bin/diffuse "$LOCAL"
> "$MERGED" "$REMOTE"'
>
> Then, when I invoke mergetool during merge, I get diffuse with four
> panes open as by default, instead of three specified in command line
> setting.
> Is this an expected behavior, and how can I force mergetool to use
> provided command line?
diffuse is already a predefined merge tool, so mergetool.diffuse.cmd is
ignored. Try using a different name.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
^ permalink raw reply
* Re: [PATCH 00/22] Refactor to accept NUL in commit messages
From: Junio C Hamano @ 2011-10-23 9:46 UTC (permalink / raw)
To: Nguyen Thai Ngoc Duy; +Cc: git, peff, Ævar Arnfjörð
In-Reply-To: <CACsJy8CA2cqJqt7cUN1CdnOb3=qE6B2XTd1oQKZ7osVz09kSGg@mail.gmail.com>
Nguyen Thai Ngoc Duy <pclouds@gmail.com> writes:
> On Sun, Oct 23, 2011 at 4:51 PM, Junio C Hamano <gitster@pobox.com> wrote:
> ...
>> The low level object format of our commit is textual header fields, each
>> of which is terminated with a LF, followed by a LF to mark the end of
>> header fields, and then opaque payload that can contain any bytes. It does
>> not forbid a non-Git application to reuse the object store infrastructure
>> to store ASN.1 binary goo there, and the low level interface we give such
>> as cat-file is a perfectly valid way to inspect such a "commit" object.
>
> cat-file is fine, commit-tree (or any commands that call
> commit_tree()) cuts at NUL though.
> I wonder how git processes commit messages in utf-16.
That is exactly what I am saying.
Perhaps you didn't either read or understand what you omitted from your
quoting; otherwise you even wouldn't have brought up utf-16.
Let me requote that part for you.
> But when it comes to "Git" Porcelains (e.g. the log family of commands),
> we do assume people do not store random binary byte sequences in commits,
> and we do take advantage of that assumption by splitting each "line" at
> LF, indenting them with 4 spaces, etc. In other words, a commit log in the
> Git context _is_ pretty much text and not arbitrary byte sequence.
Think what would cutting at a byte whose value is 012 and adding four
bytes whose values are 040 to each of "lines" that formed with such
cutting do to UTF-16 goo, even if it does not contain any NUL byte. As far
as Git Porcelains are concerned, it is no different from random binary
byte sequences.
^ permalink raw reply
* Re: git mergetool ignores configured command line
From: Junio C Hamano @ 2011-10-23 9:52 UTC (permalink / raw)
To: Andreas Schwab; +Cc: Alexander Vladimirov, git
In-Reply-To: <m21uu4hzmq.fsf@linux-m68k.org>
Andreas Schwab <schwab@linux-m68k.org> writes:
> diffuse is already a predefined merge tool, so mergetool.diffuse.cmd is
> ignored. Try using a different name.
I wonder if we can improve this, though.
It is nice that we give canned definition of argument order to so many
obscure tools, but instead of ignoring mergetool.<tool>.cmd when the user
told us to use <tool>, couldn't we simply ignore what we have internally
as canned definition?
Even if such a change were too intrusive (I didn't check), could we have
a decency to at least warn that we are ignoring the configuration?
^ permalink raw reply
* Re: [PATCH 00/22] Refactor to accept NUL in commit messages
From: Nguyen Thai Ngoc Duy @ 2011-10-23 10:17 UTC (permalink / raw)
To: Junio C Hamano; +Cc: git, peff, Ævar Arnfjörð
In-Reply-To: <7vehy459bg.fsf@alter.siamese.dyndns.org>
On Sun, Oct 23, 2011 at 8:46 PM, Junio C Hamano <gitster@pobox.com> wrote:
> Nguyen Thai Ngoc Duy <pclouds@gmail.com> writes:
>
>> On Sun, Oct 23, 2011 at 4:51 PM, Junio C Hamano <gitster@pobox.com> wrote:
>> ...
>>> The low level object format of our commit is textual header fields, each
>>> of which is terminated with a LF, followed by a LF to mark the end of
>>> header fields, and then opaque payload that can contain any bytes. It does
>>> not forbid a non-Git application to reuse the object store infrastructure
>>> to store ASN.1 binary goo there, and the low level interface we give such
>>> as cat-file is a perfectly valid way to inspect such a "commit" object.
>>
>> cat-file is fine, commit-tree (or any commands that call
>> commit_tree()) cuts at NUL though.
>> I wonder how git processes commit messages in utf-16.
>
> That is exactly what I am saying.
>
> Perhaps you didn't either read or understand what you omitted from your
> quoting; otherwise you even wouldn't have brought up utf-16.
>
> Let me requote that part for you.
>
>> But when it comes to "Git" Porcelains (e.g. the log family of commands),
>> we do assume people do not store random binary byte sequences in commits,
>> and we do take advantage of that assumption by splitting each "line" at
>> LF, indenting them with 4 spaces, etc. In other words, a commit log in the
>> Git context _is_ pretty much text and not arbitrary byte sequence.
>
> Think what would cutting at a byte whose value is 012 and adding four
> bytes whose values are 040 to each of "lines" that formed with such
> cutting do to UTF-16 goo, even if it does not contain any NUL byte. As far
> as Git Porcelains are concerned, it is no different from random binary
> byte sequences.
>
I'm sorry. The utf-16 was an afterthought when I was nearly finished
with the reply and already cut that quote.
The assumption that people do not store random binary byte sequences
in commits sort of conflicts with "encoding" field in the commit
header though. The assumption is documented in i18n.txt. I guess it's
just me who did not read document carefully. But maybe it's good to
stop people from shooting themselves in this case (i.e. setting
encoding to utf-16 or similar).
--
Duy
^ permalink raw reply
* Re: git mergetool ignores configured command line
From: David Aguilar @ 2011-10-23 10:35 UTC (permalink / raw)
To: Junio C Hamano; +Cc: Andreas Schwab, Alexander Vladimirov, git
In-Reply-To: <7vaa8s592k.fsf@alter.siamese.dyndns.org>
On Sun, Oct 23, 2011 at 02:52:19AM -0700, Junio C Hamano wrote:
> Andreas Schwab <schwab@linux-m68k.org> writes:
>
> > diffuse is already a predefined merge tool, so mergetool.diffuse.cmd is
> > ignored. Try using a different name.
>
> I wonder if we can improve this, though.
>
> It is nice that we give canned definition of argument order to so many
> obscure tools, but instead of ignoring mergetool.<tool>.cmd when the user
> told us to use <tool>, couldn't we simply ignore what we have internally
> as canned definition?
>
> Even if such a change were too intrusive (I didn't check), could we have
> a decency to at least warn that we are ignoring the configuration?
I agree. Ideally, we should honor their configuration.
I'll see if doing so is not too intrusive.
--
David
^ permalink raw reply
* Re: [PATCH 00/22] Refactor to accept NUL in commit messages
From: Robin Rosenberg @ 2011-10-23 10:44 UTC (permalink / raw)
To: Jeff King
Cc: Nguyễn Thái Ngọc Duy, git, Junio C Hamano,
Ævar Arnfjörð
In-Reply-To: <20111022190914.GA1785@sigill.intra.peff.net>
Jeff King skrev 2011-10-22 21.09:
> On Sat, Oct 22, 2011 at 09:04:19PM +1100, Nguyen Thai Ngoc Duy wrote:
>
>> This series helps pass commit message size up to output functions,
>> though it does not change any output functions to print ^@.
> Can we take a step back for a second and discuss what git _should_ do
> with commits that contain NUL?
Yes please. I don't think allowing NUL makes sense, but it makes sense
to state how NUL should be handled when anyone attempt it, so there
might be things to fix even if NUL is banned.
Are there any such commits in the wild?
-- robin
^ permalink raw reply
* [RFC/PATCH] sequencer: factor code out of revert builtin
From: Ramkumar Ramachandra @ 2011-10-23 11:09 UTC (permalink / raw)
To: Git List; +Cc: Junio C Hamano, Jonathan Nieder, Christian Couder
In-Reply-To: <1319310826-508-1-git-send-email-artagnon@gmail.com>
Start building the generalized sequencer by moving code from revert.c
into sequencer.c and sequencer.h. Make the builtin responsible only
for command-line parsing, and expose a new sequencer_pick_revisions()
to do the actual work of sequencing commits.
This is intended to be almost a pure code movement patch with no
functional changes. Check with:
$ git blame -s -CCC HEAD^..HEAD -- sequencer.c | grep -C3 '^[^^]'
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
Assuming that this iteration of the mini-series is alright, I quickly
wanted to demonstrate the big "code movement" patch that I'll begin
the next series with. Does it look alright sans a few glitches like
the replication of action_name()?
builtin/revert.c | 821 +-----------------------------------------------------
sequencer.c | 802 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
sequencer.h | 26 ++
3 files changed, 828 insertions(+), 821 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index df9459b..c272920 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -1,19 +1,9 @@
#include "cache.h"
#include "builtin.h"
-#include "object.h"
-#include "commit.h"
-#include "tag.h"
-#include "run-command.h"
-#include "exec_cmd.h"
-#include "utf8.h"
#include "parse-options.h"
-#include "cache-tree.h"
#include "diff.h"
#include "revision.h"
#include "rerere.h"
-#include "merge-recursive.h"
-#include "refs.h"
-#include "dir.h"
#include "sequencer.h"
/*
@@ -39,40 +29,11 @@ static const char * const cherry_pick_usage[] = {
NULL
};
-enum replay_subcommand { REPLAY_NONE, REPLAY_RESET, REPLAY_CONTINUE };
-
-struct replay_opts {
- enum replay_action action;
- enum replay_subcommand subcommand;
-
- /* Boolean options */
- int edit;
- int record_origin;
- int no_commit;
- int signoff;
- int allow_ff;
- int allow_rerere_auto;
-
- int mainline;
-
- /* Merge strategy */
- const char *strategy;
- const char **xopts;
- size_t xopts_nr, xopts_alloc;
-
- /* Only used by REPLAY_NONE */
- struct rev_info *revs;
-};
-
-#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
-
static const char *action_name(const struct replay_opts *opts)
{
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 == REPLAY_REVERT ? revert_usage : cherry_pick_usage;
@@ -222,784 +183,6 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
usage_with_options(usage_str, options);
}
-struct commit_message {
- char *parent_label;
- const char *label;
- const char *subject;
- char *reencoded_message;
- const char *message;
-};
-
-static int get_message(struct commit *commit, struct commit_message *out)
-{
- const char *encoding;
- const char *abbrev, *subject;
- int abbrev_len, subject_len;
- char *q;
-
- if (!commit->buffer)
- return -1;
- encoding = get_encoding(commit->buffer);
- if (!encoding)
- encoding = "UTF-8";
- if (!git_commit_encoding)
- git_commit_encoding = "UTF-8";
-
- out->reencoded_message = NULL;
- out->message = commit->buffer;
- if (strcmp(encoding, git_commit_encoding))
- out->reencoded_message = reencode_string(commit->buffer,
- git_commit_encoding, encoding);
- if (out->reencoded_message)
- out->message = out->reencoded_message;
-
- abbrev = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV);
- abbrev_len = strlen(abbrev);
-
- subject_len = find_commit_subject(out->message, &subject);
-
- out->parent_label = xmalloc(strlen("parent of ") + abbrev_len +
- strlen("... ") + subject_len + 1);
- q = out->parent_label;
- q = mempcpy(q, "parent of ", strlen("parent of "));
- out->label = q;
- q = mempcpy(q, abbrev, abbrev_len);
- q = mempcpy(q, "... ", strlen("... "));
- out->subject = q;
- q = mempcpy(q, subject, subject_len);
- *q = '\0';
- return 0;
-}
-
-static void free_message(struct commit_message *msg)
-{
- free(msg->parent_label);
- free(msg->reencoded_message);
-}
-
-static char *get_encoding(const char *message)
-{
- const char *p = message, *eol;
-
- while (*p && *p != '\n') {
- for (eol = p + 1; *eol && *eol != '\n'; eol++)
- ; /* do nothing */
- if (!prefixcmp(p, "encoding ")) {
- char *result = xmalloc(eol - 8 - p);
- strlcpy(result, p + 9, eol - 8 - p);
- return result;
- }
- p = eol;
- if (*p == '\n')
- p++;
- }
- return NULL;
-}
-
-static void write_cherry_pick_head(struct commit *commit)
-{
- int fd;
- struct strbuf buf = STRBUF_INIT;
-
- strbuf_addf(&buf, "%s\n", sha1_to_hex(commit->object.sha1));
-
- fd = open(git_path("CHERRY_PICK_HEAD"), O_WRONLY | O_CREAT, 0666);
- if (fd < 0)
- die_errno(_("Could not open '%s' for writing"),
- git_path("CHERRY_PICK_HEAD"));
- if (write_in_full(fd, buf.buf, buf.len) != buf.len || close(fd))
- die_errno(_("Could not write to '%s'"), git_path("CHERRY_PICK_HEAD"));
- strbuf_release(&buf);
-}
-
-static void print_advice(int show_hint)
-{
- char *msg = getenv("GIT_CHERRY_PICK_HELP");
-
- if (msg) {
- fprintf(stderr, "%s\n", msg);
- /*
- * A conflict has occured but the porcelain
- * (typically rebase --interactive) wants to take care
- * of the commit itself so remove CHERRY_PICK_HEAD
- */
- unlink(git_path("CHERRY_PICK_HEAD"));
- return;
- }
-
- if (show_hint) {
- advise("after resolving the conflicts, mark the corrected paths");
- advise("with 'git add <paths>' or 'git rm <paths>'");
- advise("and commit the result with 'git commit'");
- }
-}
-
-static void write_message(struct strbuf *msgbuf, const char *filename)
-{
- static struct lock_file msg_file;
-
- int msg_fd = hold_lock_file_for_update(&msg_file, filename,
- LOCK_DIE_ON_ERROR);
- if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0)
- die_errno(_("Could not write to %s."), filename);
- strbuf_release(msgbuf);
- if (commit_lock_file(&msg_file) < 0)
- die(_("Error wrapping up %s"), filename);
-}
-
-static struct tree *empty_tree(void)
-{
- return lookup_tree((const unsigned char *)EMPTY_TREE_SHA1_BIN);
-}
-
-static int error_dirty_index(struct replay_opts *opts)
-{
- if (read_cache_unmerged())
- return error_resolve_conflict(action_name(opts));
-
- /* Different translation strings for cherry-pick and revert */
- 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."));
-
- if (advice_commit_before_merge)
- advise(_("Commit your changes or stash them to proceed."));
- return -1;
-}
-
-static int fast_forward_to(const unsigned char *to, const unsigned char *from)
-{
- struct ref_lock *ref_lock;
-
- read_cache();
- if (checkout_fast_forward(from, to))
- exit(1); /* the callee should have complained already */
- ref_lock = lock_any_ref_for_update("HEAD", from, 0);
- return write_ref_sha1(ref_lock, to, "cherry-pick");
-}
-
-static int do_recursive_merge(struct commit *base, struct commit *next,
- const char *base_label, const char *next_label,
- unsigned char *head, struct strbuf *msgbuf,
- struct replay_opts *opts)
-{
- struct merge_options o;
- struct tree *result, *next_tree, *base_tree, *head_tree;
- int clean, index_fd;
- const char **xopt;
- static struct lock_file index_lock;
-
- index_fd = hold_locked_index(&index_lock, 1);
-
- read_cache();
-
- init_merge_options(&o);
- o.ancestor = base ? base_label : "(empty tree)";
- o.branch1 = "HEAD";
- o.branch2 = next ? next_label : "(empty tree)";
-
- head_tree = parse_tree_indirect(head);
- next_tree = next ? next->tree : empty_tree();
- base_tree = base ? base->tree : empty_tree();
-
- for (xopt = opts->xopts; xopt != opts->xopts + opts->xopts_nr; xopt++)
- parse_merge_opt(&o, *xopt);
-
- clean = merge_trees(&o,
- head_tree,
- next_tree, base_tree, &result);
-
- if (active_cache_changed &&
- (write_cache(index_fd, active_cache, active_nr) ||
- commit_locked_index(&index_lock)))
- /* TRANSLATORS: %s will be "revert" or "cherry-pick" */
- die(_("%s: Unable to write new index file"), action_name(opts));
- rollback_lock_file(&index_lock);
-
- if (!clean) {
- int i;
- strbuf_addstr(msgbuf, "\nConflicts:\n\n");
- for (i = 0; i < active_nr;) {
- struct cache_entry *ce = active_cache[i++];
- if (ce_stage(ce)) {
- strbuf_addch(msgbuf, '\t');
- strbuf_addstr(msgbuf, ce->name);
- strbuf_addch(msgbuf, '\n');
- while (i < active_nr && !strcmp(ce->name,
- active_cache[i]->name))
- i++;
- }
- }
- }
-
- return !clean;
-}
-
-/*
- * If we are cherry-pick, and if the merge did not result in
- * hand-editing, we will hit this commit and inherit the original
- * author date and name.
- * If we are revert, or if our cherry-pick results in a hand merge,
- * we had better say that the current user is responsible for that.
- */
-static int run_git_commit(const char *defmsg, struct replay_opts *opts)
-{
- /* 6 is max possible length of our args array including NULL */
- const char *args[6];
- int i = 0;
-
- args[i++] = "commit";
- args[i++] = "-n";
- if (opts->signoff)
- args[i++] = "-s";
- if (!opts->edit) {
- args[i++] = "-F";
- args[i++] = defmsg;
- }
- args[i] = NULL;
-
- return run_command_v_opt(args, RUN_GIT_CMD);
-}
-
-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;
- const char *base_label, *next_label;
- struct commit_message msg = { NULL, NULL, NULL, NULL, NULL };
- char *defmsg = NULL;
- struct strbuf msgbuf = STRBUF_INIT;
- int res;
-
- if (opts->no_commit) {
- /*
- * We do not intend to commit immediately. We just want to
- * merge the differences in, so let's compute the tree
- * that represents the "current" state for merge-recursive
- * to work on.
- */
- if (write_cache_as_tree(head, 0, NULL))
- die (_("Your index file is unmerged."));
- } else {
- if (get_sha1("HEAD", head))
- return error(_("You do not have a valid HEAD"));
- if (index_differs_from("HEAD", 0))
- return error_dirty_index(opts);
- }
- discard_cache();
-
- if (!commit->parents) {
- parent = NULL;
- }
- else if (commit->parents->next) {
- /* Reverting or cherry-picking a merge commit */
- int cnt;
- struct commit_list *p;
-
- if (!opts->mainline)
- return error(_("Commit %s is a merge but no -m option was given."),
- sha1_to_hex(commit->object.sha1));
-
- for (cnt = 1, p = commit->parents;
- cnt != opts->mainline && p;
- cnt++)
- p = p->next;
- if (cnt != opts->mainline || !p)
- return error(_("Commit %s does not have parent %d"),
- sha1_to_hex(commit->object.sha1), opts->mainline);
- parent = p->item;
- } else if (0 < opts->mainline)
- return error(_("Mainline was specified but commit %s is not a merge."),
- sha1_to_hex(commit->object.sha1));
- else
- parent = commit->parents->item;
-
- if (opts->allow_ff && parent && !hashcmp(parent->object.sha1, head))
- return fast_forward_to(commit->object.sha1, head);
-
- if (parent && parse_commit(parent) < 0)
- /* 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));
-
- if (get_message(commit, &msg) != 0)
- return error(_("Cannot get commit message for %s"),
- sha1_to_hex(commit->object.sha1));
-
- /*
- * "commit" is an existing commit. We would want to apply
- * the difference it introduces since its first parent "prev"
- * on top of the current HEAD if we are cherry-pick. Or the
- * reverse of it if we are revert.
- */
-
- defmsg = git_pathdup("MERGE_MSG");
-
- if (action == REPLAY_REVERT) {
- base = commit;
- base_label = msg.label;
- next = parent;
- next_label = msg.parent_label;
- strbuf_addstr(&msgbuf, "Revert \"");
- strbuf_addstr(&msgbuf, msg.subject);
- strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit ");
- strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
-
- if (commit->parents && commit->parents->next) {
- strbuf_addstr(&msgbuf, ", reversing\nchanges made to ");
- strbuf_addstr(&msgbuf, sha1_to_hex(parent->object.sha1));
- }
- strbuf_addstr(&msgbuf, ".\n");
- } else {
- const char *p;
-
- base = parent;
- base_label = msg.parent_label;
- next = commit;
- next_label = msg.label;
-
- /*
- * Append the commit log message to msgbuf; it starts
- * after the tree, parent, author, committer
- * information followed by "\n\n".
- */
- p = strstr(msg.message, "\n\n");
- if (p) {
- p += 2;
- strbuf_addstr(&msgbuf, p);
- }
-
- if (opts->record_origin) {
- strbuf_addstr(&msgbuf, "(cherry picked from commit ");
- strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
- strbuf_addstr(&msgbuf, ")\n");
- }
- }
-
- 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);
- } else {
- struct commit_list *common = NULL;
- struct commit_list *remotes = NULL;
-
- write_message(&msgbuf, defmsg);
-
- commit_list_insert(base, &common);
- commit_list_insert(next, &remotes);
- res = try_merge_command(opts->strategy, opts->xopts_nr, opts->xopts,
- common, sha1_to_hex(head), remotes);
- free_commit_list(common);
- free_commit_list(remotes);
- }
-
- /*
- * If the merge was clean or if it failed due to conflict, we write
- * CHERRY_PICK_HEAD for the subsequent invocation of commit to use.
- * However, if the merge did not even start, then we don't want to
- * write it at all.
- */
- if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1))
- write_cherry_pick_head(commit);
-
- if (res) {
- error(action == REPLAY_REVERT
- ? _("could not revert %s... %s")
- : _("could not apply %s... %s"),
- find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV),
- msg.subject);
- print_advice(res == 1);
- rerere(opts->allow_rerere_auto);
- } else {
- if (!opts->no_commit)
- res = run_git_commit(defmsg, opts);
- }
-
- free_message(&msg);
- free(defmsg);
-
- return res;
-}
-
-static void prepare_revs(struct replay_opts *opts)
-{
- if (opts->action != REPLAY_REVERT)
- opts->revs->reverse ^= 1;
-
- if (prepare_revision_walk(opts->revs))
- die(_("revision walk setup failed"));
-
- if (!opts->revs->commits)
- die(_("empty commit set passed"));
-}
-
-static void read_and_refresh_cache(struct replay_opts *opts)
-{
- static struct lock_file index_lock;
- int index_fd = hold_locked_index(&index_lock, 0);
- if (read_index_preload(&the_index, NULL) < 0)
- die(_("git %s: failed to read the index"), action_name(opts));
- refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL);
- if (the_index.cache_changed) {
- if (write_index(&the_index, index_fd) ||
- commit_locked_index(&index_lock))
- die(_("git %s: failed to refresh the index"), action_name(opts));
- }
- rollback_lock_file(&index_lock);
-}
-
-/*
- * Append a commit to the end of the commit_list.
- *
- * next starts by pointing to the variable that holds the head of an
- * empty commit_list, and is updated to point to the "next" field of
- * the last item on the list as new commits are appended.
- *
- * Usage example:
- *
- * struct commit_list *list;
- * struct commit_list **next = &list;
- *
- * next = commit_list_append(c1, next);
- * next = commit_list_append(c2, next);
- * assert(commit_list_count(list) == 2);
- * return list;
- */
-static struct replay_insn_list **replay_insn_list_append(enum replay_action action,
- struct commit *operand,
- struct replay_insn_list **next)
-{
- 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 replay_insn_list *todo_list)
-{
- struct replay_insn_list *cur;
-
- for (cur = todo_list; cur; cur = cur->next) {
- const char *sha1_abbrev, *action_str, *subject;
- int subject_len;
-
- action_str = cur->action == REPLAY_REVERT ? "revert" : "pick";
- sha1_abbrev = find_unique_abbrev(cur->operand->object.sha1, DEFAULT_ABBREV);
- subject_len = find_commit_subject(cur->operand->buffer, &subject);
- strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev,
- subject_len, subject);
- }
- return 0;
-}
-
-static int parse_insn_line(char *bol, char *eol, struct replay_insn_list *item)
-{
- unsigned char commit_sha1[20];
- char *end_of_object_name;
- int saved, status;
-
- if (!prefixcmp(bol, "pick ")) {
- item->action = REPLAY_PICK;
- bol += strlen("pick ");
- } else if (!prefixcmp(bol, "revert ")) {
- item->action = REPLAY_REVERT;
- bol += strlen("revert ");
- } else {
- size_t len = strchrnul(bol, '\n') - bol;
- if (len > 255)
- len = 255;
- return error(_("Unrecognized action: %.*s"), (int)len, bol);
- }
-
- end_of_object_name = bol + strcspn(bol, " \n");
- saved = *end_of_object_name;
- *end_of_object_name = '\0';
- status = get_sha1(bol, commit_sha1);
- *end_of_object_name = saved;
-
- if (status < 0)
- return error(_("Malformed object name: %s"), bol);
-
- item->operand = lookup_commit_reference(commit_sha1);
- if (!item->operand)
- return error(_("Not a valid commit: %s"), bol);
-
- item->next = NULL;
- return 0;
-}
-
-static int parse_insn_buffer(char *buf, struct replay_insn_list **todo_list)
-{
- 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++) {
- char *eol = strchrnul(p, '\n');
- if (parse_insn_line(p, eol, &item) < 0)
- return error(_("on line %d."), i);
- next = replay_insn_list_append(item.action, item.operand, next);
- p = *eol ? eol + 1 : eol;
- }
- if (!*todo_list)
- return error(_("No commits parsed."));
- return 0;
-}
-
-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;
- int fd, res;
-
- fd = open(todo_file, O_RDONLY);
- if (fd < 0)
- die_errno(_("Could not open %s."), todo_file);
- if (strbuf_read(&buf, fd, 0) < 0) {
- close(fd);
- strbuf_release(&buf);
- die(_("Could not read %s."), todo_file);
- }
- close(fd);
-
- res = parse_insn_buffer(buf.buf, todo_list);
- strbuf_release(&buf);
- if (res)
- die(_("Unusable instruction sheet: %s"), todo_file);
-}
-
-static int populate_opts_cb(const char *key, const char *value, void *data)
-{
- struct replay_opts *opts = data;
- int error_flag = 1;
-
- if (!value)
- error_flag = 0;
- else if (!strcmp(key, "options.no-commit"))
- opts->no_commit = git_config_bool_or_int(key, value, &error_flag);
- else if (!strcmp(key, "options.edit"))
- opts->edit = git_config_bool_or_int(key, value, &error_flag);
- else if (!strcmp(key, "options.signoff"))
- opts->signoff = git_config_bool_or_int(key, value, &error_flag);
- else if (!strcmp(key, "options.record-origin"))
- opts->record_origin = git_config_bool_or_int(key, value, &error_flag);
- else if (!strcmp(key, "options.allow-ff"))
- opts->allow_ff = git_config_bool_or_int(key, value, &error_flag);
- else if (!strcmp(key, "options.mainline"))
- opts->mainline = git_config_int(key, value);
- else if (!strcmp(key, "options.strategy"))
- git_config_string(&opts->strategy, key, value);
- else if (!strcmp(key, "options.strategy-option")) {
- ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc);
- opts->xopts[opts->xopts_nr++] = xstrdup(value);
- } else
- return error(_("Invalid key: %s"), key);
-
- if (!error_flag)
- return error(_("Invalid value for %s: %s"), key, value);
-
- return 0;
-}
-
-static void read_populate_opts(struct replay_opts **opts_ptr)
-{
- const char *opts_file = git_path(SEQ_OPTS_FILE);
-
- if (!file_exists(opts_file))
- return;
- if (git_config_from_file(populate_opts_cb, opts_file, *opts_ptr) < 0)
- die(_("Malformed options sheet: %s"), opts_file);
-}
-
-static void walk_revs_populate_todo(struct replay_insn_list **todo_list,
- struct replay_opts *opts)
-{
- struct commit *commit;
- struct replay_insn_list **next;
-
- prepare_revs(opts);
-
- next = todo_list;
- while ((commit = get_revision(opts->revs)))
- next = replay_insn_list_append(opts->action, commit, next);
-}
-
-static int create_seq_dir(void)
-{
- const char *seq_dir = git_path(SEQ_DIR);
-
- if (file_exists(seq_dir))
- return error(_("%s already exists."), seq_dir);
- else if (mkdir(seq_dir, 0777) < 0)
- die_errno(_("Could not create sequencer directory '%s'."), seq_dir);
- return 0;
-}
-
-static void save_head(const char *head)
-{
- const char *head_file = git_path(SEQ_HEAD_FILE);
- static struct lock_file head_lock;
- struct strbuf buf = STRBUF_INIT;
- int fd;
-
- fd = hold_lock_file_for_update(&head_lock, head_file, LOCK_DIE_ON_ERROR);
- strbuf_addf(&buf, "%s\n", head);
- if (write_in_full(fd, buf.buf, buf.len) < 0)
- die_errno(_("Could not write to %s."), head_file);
- if (commit_lock_file(&head_lock) < 0)
- die(_("Error wrapping up %s."), head_file);
-}
-
-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;
- struct strbuf buf = STRBUF_INIT;
- int fd;
-
- fd = hold_lock_file_for_update(&todo_lock, todo_file, LOCK_DIE_ON_ERROR);
- 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);
- die_errno(_("Could not write to %s."), todo_file);
- }
- if (commit_lock_file(&todo_lock) < 0) {
- strbuf_release(&buf);
- die(_("Error wrapping up %s."), todo_file);
- }
- strbuf_release(&buf);
-}
-
-static void save_opts(struct replay_opts *opts)
-{
- const char *opts_file = git_path(SEQ_OPTS_FILE);
-
- if (opts->no_commit)
- git_config_set_in_file(opts_file, "options.no-commit", "true");
- if (opts->edit)
- git_config_set_in_file(opts_file, "options.edit", "true");
- if (opts->signoff)
- git_config_set_in_file(opts_file, "options.signoff", "true");
- if (opts->record_origin)
- git_config_set_in_file(opts_file, "options.record-origin", "true");
- if (opts->allow_ff)
- git_config_set_in_file(opts_file, "options.allow-ff", "true");
- if (opts->mainline) {
- struct strbuf buf = STRBUF_INIT;
- strbuf_addf(&buf, "%d", opts->mainline);
- git_config_set_in_file(opts_file, "options.mainline", buf.buf);
- strbuf_release(&buf);
- }
- if (opts->strategy)
- git_config_set_in_file(opts_file, "options.strategy", opts->strategy);
- if (opts->xopts) {
- int i;
- for (i = 0; i < opts->xopts_nr; i++)
- git_config_set_multivar_in_file(opts_file,
- "options.strategy-option",
- opts->xopts[i], "^$", 0);
- }
-}
-
-static int pick_commits(struct replay_insn_list *todo_list,
- struct replay_opts *opts)
-{
- struct replay_insn_list *cur;
- int res;
-
- setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
- if (opts->allow_ff)
- assert(!(opts->signoff || opts->no_commit ||
- opts->record_origin || opts->edit));
- read_and_refresh_cache(opts);
-
- for (cur = todo_list; cur; cur = cur->next) {
- save_todo(cur);
- res = do_pick_commit(cur->operand, cur->action, opts);
- if (res) {
- if (!cur->next)
- /*
- * An error was encountered while
- * picking the last commit; the
- * sequencer state is useless now --
- * the user simply needs to resolve
- * the conflict and commit
- */
- remove_sequencer_state(0);
- return res;
- }
- }
-
- /*
- * Sequence of picks finished successfully; cleanup by
- * removing the .git/sequencer directory
- */
- remove_sequencer_state(1);
- return 0;
-}
-
-static int pick_revisions(struct replay_opts *opts)
-{
- struct replay_insn_list *todo_list = NULL;
- unsigned char sha1[20];
-
- if (opts->subcommand == REPLAY_NONE)
- assert(opts->revs);
-
- read_and_refresh_cache(opts);
-
- /*
- * Decide what to do depending on the arguments; a fresh
- * cherry-pick should be handled differently from an existing
- * one that is being continued
- */
- if (opts->subcommand == REPLAY_RESET) {
- remove_sequencer_state(1);
- return 0;
- } else if (opts->subcommand == REPLAY_CONTINUE) {
- if (!file_exists(git_path(SEQ_TODO_FILE)))
- goto error;
- read_populate_opts(&opts);
- read_populate_todo(&todo_list);
-
- /* Verify that the conflict has been resolved */
- if (!index_differs_from("HEAD", 0))
- todo_list = todo_list->next;
- } else {
- /*
- * Start a new cherry-pick/ revert sequence; but
- * first, make sure that an existing one isn't in
- * progress
- */
-
- walk_revs_populate_todo(&todo_list, opts);
- if (create_seq_dir() < 0) {
- error(_("A cherry-pick or revert is in progress."));
- advise(_("Use --continue to continue the operation"));
- advise(_("or --reset to forget about it"));
- return -1;
- }
- if (get_sha1("HEAD", sha1)) {
- if (opts->action == REPLAY_REVERT)
- return error(_("Can't revert as initial commit"));
- return error(_("Can't cherry-pick into empty head"));
- }
- save_head(sha1_to_hex(sha1));
- save_opts(opts);
- }
- return pick_commits(todo_list, opts);
-error:
- return error(_("No %s in progress"), action_name(opts));
-}
-
int cmd_revert(int argc, const char **argv, const char *prefix)
{
struct replay_opts opts;
@@ -1011,7 +194,7 @@ int cmd_revert(int argc, const char **argv, const char *prefix)
opts.action = REPLAY_REVERT;
git_config(git_default_config, NULL);
parse_args(argc, argv, &opts);
- res = pick_revisions(&opts);
+ res = sequencer_pick_revisions(&opts);
if (res < 0)
die(_("revert failed"));
return res;
@@ -1026,7 +209,7 @@ int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
opts.action = REPLAY_PICK;
git_config(git_default_config, NULL);
parse_args(argc, argv, &opts);
- res = pick_revisions(&opts);
+ res = sequencer_pick_revisions(&opts);
if (res < 0)
die(_("cherry-pick failed"));
return res;
diff --git a/sequencer.c b/sequencer.c
index bc2c046..87f146b 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -1,7 +1,27 @@
#include "cache.h"
-#include "sequencer.h"
-#include "strbuf.h"
+#include "object.h"
+#include "commit.h"
+#include "tag.h"
+#include "run-command.h"
+#include "exec_cmd.h"
+#include "utf8.h"
+#include "cache-tree.h"
+#include "diff.h"
+#include "revision.h"
+#include "rerere.h"
+#include "merge-recursive.h"
+#include "refs.h"
#include "dir.h"
+#include "sequencer.h"
+
+#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
+
+static const char *action_name(const struct replay_opts *opts)
+{
+ return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick";
+}
+
+static char *get_encoding(const char *message);
void remove_sequencer_state(int aggressive)
{
@@ -17,3 +37,781 @@ void remove_sequencer_state(int aggressive)
strbuf_release(&seq_dir);
strbuf_release(&seq_old_dir);
}
+
+struct commit_message {
+ char *parent_label;
+ const char *label;
+ const char *subject;
+ char *reencoded_message;
+ const char *message;
+};
+
+static int get_message(struct commit *commit, struct commit_message *out)
+{
+ const char *encoding;
+ const char *abbrev, *subject;
+ int abbrev_len, subject_len;
+ char *q;
+
+ if (!commit->buffer)
+ return -1;
+ encoding = get_encoding(commit->buffer);
+ if (!encoding)
+ encoding = "UTF-8";
+ if (!git_commit_encoding)
+ git_commit_encoding = "UTF-8";
+
+ out->reencoded_message = NULL;
+ out->message = commit->buffer;
+ if (strcmp(encoding, git_commit_encoding))
+ out->reencoded_message = reencode_string(commit->buffer,
+ git_commit_encoding, encoding);
+ if (out->reencoded_message)
+ out->message = out->reencoded_message;
+
+ abbrev = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV);
+ abbrev_len = strlen(abbrev);
+
+ subject_len = find_commit_subject(out->message, &subject);
+
+ out->parent_label = xmalloc(strlen("parent of ") + abbrev_len +
+ strlen("... ") + subject_len + 1);
+ q = out->parent_label;
+ q = mempcpy(q, "parent of ", strlen("parent of "));
+ out->label = q;
+ q = mempcpy(q, abbrev, abbrev_len);
+ q = mempcpy(q, "... ", strlen("... "));
+ out->subject = q;
+ q = mempcpy(q, subject, subject_len);
+ *q = '\0';
+ return 0;
+}
+
+static void free_message(struct commit_message *msg)
+{
+ free(msg->parent_label);
+ free(msg->reencoded_message);
+}
+
+static char *get_encoding(const char *message)
+{
+ const char *p = message, *eol;
+
+ while (*p && *p != '\n') {
+ for (eol = p + 1; *eol && *eol != '\n'; eol++)
+ ; /* do nothing */
+ if (!prefixcmp(p, "encoding ")) {
+ char *result = xmalloc(eol - 8 - p);
+ strlcpy(result, p + 9, eol - 8 - p);
+ return result;
+ }
+ p = eol;
+ if (*p == '\n')
+ p++;
+ }
+ return NULL;
+}
+
+static void write_cherry_pick_head(struct commit *commit)
+{
+ int fd;
+ struct strbuf buf = STRBUF_INIT;
+
+ strbuf_addf(&buf, "%s\n", sha1_to_hex(commit->object.sha1));
+
+ fd = open(git_path("CHERRY_PICK_HEAD"), O_WRONLY | O_CREAT, 0666);
+ if (fd < 0)
+ die_errno(_("Could not open '%s' for writing"),
+ git_path("CHERRY_PICK_HEAD"));
+ if (write_in_full(fd, buf.buf, buf.len) != buf.len || close(fd))
+ die_errno(_("Could not write to '%s'"), git_path("CHERRY_PICK_HEAD"));
+ strbuf_release(&buf);
+}
+
+static void print_advice(int show_hint)
+{
+ char *msg = getenv("GIT_CHERRY_PICK_HELP");
+
+ if (msg) {
+ fprintf(stderr, "%s\n", msg);
+ /*
+ * A conflict has occured but the porcelain
+ * (typically rebase --interactive) wants to take care
+ * of the commit itself so remove CHERRY_PICK_HEAD
+ */
+ unlink(git_path("CHERRY_PICK_HEAD"));
+ return;
+ }
+
+ if (show_hint) {
+ advise("after resolving the conflicts, mark the corrected paths");
+ advise("with 'git add <paths>' or 'git rm <paths>'");
+ advise("and commit the result with 'git commit'");
+ }
+}
+
+static void write_message(struct strbuf *msgbuf, const char *filename)
+{
+ static struct lock_file msg_file;
+
+ int msg_fd = hold_lock_file_for_update(&msg_file, filename,
+ LOCK_DIE_ON_ERROR);
+ if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0)
+ die_errno(_("Could not write to %s."), filename);
+ strbuf_release(msgbuf);
+ if (commit_lock_file(&msg_file) < 0)
+ die(_("Error wrapping up %s"), filename);
+}
+
+static struct tree *empty_tree(void)
+{
+ return lookup_tree((const unsigned char *)EMPTY_TREE_SHA1_BIN);
+}
+
+static int error_dirty_index(struct replay_opts *opts)
+{
+ if (read_cache_unmerged())
+ return error_resolve_conflict(action_name(opts));
+
+ /* Different translation strings for cherry-pick and revert */
+ 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."));
+
+ if (advice_commit_before_merge)
+ advise(_("Commit your changes or stash them to proceed."));
+ return -1;
+}
+
+static int fast_forward_to(const unsigned char *to, const unsigned char *from)
+{
+ struct ref_lock *ref_lock;
+
+ read_cache();
+ if (checkout_fast_forward(from, to))
+ exit(1); /* the callee should have complained already */
+ ref_lock = lock_any_ref_for_update("HEAD", from, 0);
+ return write_ref_sha1(ref_lock, to, "cherry-pick");
+}
+
+static int do_recursive_merge(struct commit *base, struct commit *next,
+ const char *base_label, const char *next_label,
+ unsigned char *head, struct strbuf *msgbuf,
+ struct replay_opts *opts)
+{
+ struct merge_options o;
+ struct tree *result, *next_tree, *base_tree, *head_tree;
+ int clean, index_fd;
+ const char **xopt;
+ static struct lock_file index_lock;
+
+ index_fd = hold_locked_index(&index_lock, 1);
+
+ read_cache();
+
+ init_merge_options(&o);
+ o.ancestor = base ? base_label : "(empty tree)";
+ o.branch1 = "HEAD";
+ o.branch2 = next ? next_label : "(empty tree)";
+
+ head_tree = parse_tree_indirect(head);
+ next_tree = next ? next->tree : empty_tree();
+ base_tree = base ? base->tree : empty_tree();
+
+ for (xopt = opts->xopts; xopt != opts->xopts + opts->xopts_nr; xopt++)
+ parse_merge_opt(&o, *xopt);
+
+ clean = merge_trees(&o,
+ head_tree,
+ next_tree, base_tree, &result);
+
+ if (active_cache_changed &&
+ (write_cache(index_fd, active_cache, active_nr) ||
+ commit_locked_index(&index_lock)))
+ /* TRANSLATORS: %s will be "revert" or "cherry-pick" */
+ die(_("%s: Unable to write new index file"), action_name(opts));
+ rollback_lock_file(&index_lock);
+
+ if (!clean) {
+ int i;
+ strbuf_addstr(msgbuf, "\nConflicts:\n\n");
+ for (i = 0; i < active_nr;) {
+ struct cache_entry *ce = active_cache[i++];
+ if (ce_stage(ce)) {
+ strbuf_addch(msgbuf, '\t');
+ strbuf_addstr(msgbuf, ce->name);
+ strbuf_addch(msgbuf, '\n');
+ while (i < active_nr && !strcmp(ce->name,
+ active_cache[i]->name))
+ i++;
+ }
+ }
+ }
+
+ return !clean;
+}
+
+/*
+ * If we are cherry-pick, and if the merge did not result in
+ * hand-editing, we will hit this commit and inherit the original
+ * author date and name.
+ * If we are revert, or if our cherry-pick results in a hand merge,
+ * we had better say that the current user is responsible for that.
+ */
+static int run_git_commit(const char *defmsg, struct replay_opts *opts)
+{
+ /* 6 is max possible length of our args array including NULL */
+ const char *args[6];
+ int i = 0;
+
+ args[i++] = "commit";
+ args[i++] = "-n";
+ if (opts->signoff)
+ args[i++] = "-s";
+ if (!opts->edit) {
+ args[i++] = "-F";
+ args[i++] = defmsg;
+ }
+ args[i] = NULL;
+
+ return run_command_v_opt(args, RUN_GIT_CMD);
+}
+
+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;
+ const char *base_label, *next_label;
+ struct commit_message msg = { NULL, NULL, NULL, NULL, NULL };
+ char *defmsg = NULL;
+ struct strbuf msgbuf = STRBUF_INIT;
+ int res;
+
+ if (opts->no_commit) {
+ /*
+ * We do not intend to commit immediately. We just want to
+ * merge the differences in, so let's compute the tree
+ * that represents the "current" state for merge-recursive
+ * to work on.
+ */
+ if (write_cache_as_tree(head, 0, NULL))
+ die (_("Your index file is unmerged."));
+ } else {
+ if (get_sha1("HEAD", head))
+ return error(_("You do not have a valid HEAD"));
+ if (index_differs_from("HEAD", 0))
+ return error_dirty_index(opts);
+ }
+ discard_cache();
+
+ if (!commit->parents) {
+ parent = NULL;
+ }
+ else if (commit->parents->next) {
+ /* Reverting or cherry-picking a merge commit */
+ int cnt;
+ struct commit_list *p;
+
+ if (!opts->mainline)
+ return error(_("Commit %s is a merge but no -m option was given."),
+ sha1_to_hex(commit->object.sha1));
+
+ for (cnt = 1, p = commit->parents;
+ cnt != opts->mainline && p;
+ cnt++)
+ p = p->next;
+ if (cnt != opts->mainline || !p)
+ return error(_("Commit %s does not have parent %d"),
+ sha1_to_hex(commit->object.sha1), opts->mainline);
+ parent = p->item;
+ } else if (0 < opts->mainline)
+ return error(_("Mainline was specified but commit %s is not a merge."),
+ sha1_to_hex(commit->object.sha1));
+ else
+ parent = commit->parents->item;
+
+ if (opts->allow_ff && parent && !hashcmp(parent->object.sha1, head))
+ return fast_forward_to(commit->object.sha1, head);
+
+ if (parent && parse_commit(parent) < 0)
+ /* 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));
+
+ if (get_message(commit, &msg) != 0)
+ return error(_("Cannot get commit message for %s"),
+ sha1_to_hex(commit->object.sha1));
+
+ /*
+ * "commit" is an existing commit. We would want to apply
+ * the difference it introduces since its first parent "prev"
+ * on top of the current HEAD if we are cherry-pick. Or the
+ * reverse of it if we are revert.
+ */
+
+ defmsg = git_pathdup("MERGE_MSG");
+
+ if (action == REPLAY_REVERT) {
+ base = commit;
+ base_label = msg.label;
+ next = parent;
+ next_label = msg.parent_label;
+ strbuf_addstr(&msgbuf, "Revert \"");
+ strbuf_addstr(&msgbuf, msg.subject);
+ strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit ");
+ strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
+
+ if (commit->parents && commit->parents->next) {
+ strbuf_addstr(&msgbuf, ", reversing\nchanges made to ");
+ strbuf_addstr(&msgbuf, sha1_to_hex(parent->object.sha1));
+ }
+ strbuf_addstr(&msgbuf, ".\n");
+ } else {
+ const char *p;
+
+ base = parent;
+ base_label = msg.parent_label;
+ next = commit;
+ next_label = msg.label;
+
+ /*
+ * Append the commit log message to msgbuf; it starts
+ * after the tree, parent, author, committer
+ * information followed by "\n\n".
+ */
+ p = strstr(msg.message, "\n\n");
+ if (p) {
+ p += 2;
+ strbuf_addstr(&msgbuf, p);
+ }
+
+ if (opts->record_origin) {
+ strbuf_addstr(&msgbuf, "(cherry picked from commit ");
+ strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
+ strbuf_addstr(&msgbuf, ")\n");
+ }
+ }
+
+ 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);
+ } else {
+ struct commit_list *common = NULL;
+ struct commit_list *remotes = NULL;
+
+ write_message(&msgbuf, defmsg);
+
+ commit_list_insert(base, &common);
+ commit_list_insert(next, &remotes);
+ res = try_merge_command(opts->strategy, opts->xopts_nr, opts->xopts,
+ common, sha1_to_hex(head), remotes);
+ free_commit_list(common);
+ free_commit_list(remotes);
+ }
+
+ /*
+ * If the merge was clean or if it failed due to conflict, we write
+ * CHERRY_PICK_HEAD for the subsequent invocation of commit to use.
+ * However, if the merge did not even start, then we don't want to
+ * write it at all.
+ */
+ if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1))
+ write_cherry_pick_head(commit);
+
+ if (res) {
+ error(action == REPLAY_REVERT
+ ? _("could not revert %s... %s")
+ : _("could not apply %s... %s"),
+ find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV),
+ msg.subject);
+ print_advice(res == 1);
+ rerere(opts->allow_rerere_auto);
+ } else {
+ if (!opts->no_commit)
+ res = run_git_commit(defmsg, opts);
+ }
+
+ free_message(&msg);
+ free(defmsg);
+
+ return res;
+}
+
+static void prepare_revs(struct replay_opts *opts)
+{
+ if (opts->action != REPLAY_REVERT)
+ opts->revs->reverse ^= 1;
+
+ if (prepare_revision_walk(opts->revs))
+ die(_("revision walk setup failed"));
+
+ if (!opts->revs->commits)
+ die(_("empty commit set passed"));
+}
+
+static void read_and_refresh_cache(struct replay_opts *opts)
+{
+ static struct lock_file index_lock;
+ int index_fd = hold_locked_index(&index_lock, 0);
+ if (read_index_preload(&the_index, NULL) < 0)
+ die(_("git %s: failed to read the index"), action_name(opts));
+ refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL);
+ if (the_index.cache_changed) {
+ if (write_index(&the_index, index_fd) ||
+ commit_locked_index(&index_lock))
+ die(_("git %s: failed to refresh the index"), action_name(opts));
+ }
+ rollback_lock_file(&index_lock);
+}
+
+/*
+ * Append a commit to the end of the commit_list.
+ *
+ * next starts by pointing to the variable that holds the head of an
+ * empty commit_list, and is updated to point to the "next" field of
+ * the last item on the list as new commits are appended.
+ *
+ * Usage example:
+ *
+ * struct commit_list *list;
+ * struct commit_list **next = &list;
+ *
+ * next = commit_list_append(c1, next);
+ * next = commit_list_append(c2, next);
+ * assert(commit_list_count(list) == 2);
+ * return list;
+ */
+static struct replay_insn_list **replay_insn_list_append(enum replay_action action,
+ struct commit *operand,
+ struct replay_insn_list **next)
+{
+ 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 replay_insn_list *todo_list)
+{
+ struct replay_insn_list *cur;
+
+ for (cur = todo_list; cur; cur = cur->next) {
+ const char *sha1_abbrev, *action_str, *subject;
+ int subject_len;
+
+ action_str = cur->action == REPLAY_REVERT ? "revert" : "pick";
+ sha1_abbrev = find_unique_abbrev(cur->operand->object.sha1, DEFAULT_ABBREV);
+ subject_len = find_commit_subject(cur->operand->buffer, &subject);
+ strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev,
+ subject_len, subject);
+ }
+ return 0;
+}
+
+static int parse_insn_line(char *bol, char *eol, struct replay_insn_list *item)
+{
+ unsigned char commit_sha1[20];
+ char *end_of_object_name;
+ int saved, status;
+
+ if (!prefixcmp(bol, "pick ")) {
+ item->action = REPLAY_PICK;
+ bol += strlen("pick ");
+ } else if (!prefixcmp(bol, "revert ")) {
+ item->action = REPLAY_REVERT;
+ bol += strlen("revert ");
+ } else {
+ size_t len = strchrnul(bol, '\n') - bol;
+ if (len > 255)
+ len = 255;
+ return error(_("Unrecognized action: %.*s"), (int)len, bol);
+ }
+
+ end_of_object_name = bol + strcspn(bol, " \n");
+ saved = *end_of_object_name;
+ *end_of_object_name = '\0';
+ status = get_sha1(bol, commit_sha1);
+ *end_of_object_name = saved;
+
+ if (status < 0)
+ return error(_("Malformed object name: %s"), bol);
+
+ item->operand = lookup_commit_reference(commit_sha1);
+ if (!item->operand)
+ return error(_("Not a valid commit: %s"), bol);
+
+ item->next = NULL;
+ return 0;
+}
+
+static int parse_insn_buffer(char *buf, struct replay_insn_list **todo_list)
+{
+ 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++) {
+ char *eol = strchrnul(p, '\n');
+ if (parse_insn_line(p, eol, &item) < 0)
+ return error(_("on line %d."), i);
+ next = replay_insn_list_append(item.action, item.operand, next);
+ p = *eol ? eol + 1 : eol;
+ }
+ if (!*todo_list)
+ return error(_("No commits parsed."));
+ return 0;
+}
+
+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;
+ int fd, res;
+
+ fd = open(todo_file, O_RDONLY);
+ if (fd < 0)
+ die_errno(_("Could not open %s."), todo_file);
+ if (strbuf_read(&buf, fd, 0) < 0) {
+ close(fd);
+ strbuf_release(&buf);
+ die(_("Could not read %s."), todo_file);
+ }
+ close(fd);
+
+ res = parse_insn_buffer(buf.buf, todo_list);
+ strbuf_release(&buf);
+ if (res)
+ die(_("Unusable instruction sheet: %s"), todo_file);
+}
+
+static int populate_opts_cb(const char *key, const char *value, void *data)
+{
+ struct replay_opts *opts = data;
+ int error_flag = 1;
+
+ if (!value)
+ error_flag = 0;
+ else if (!strcmp(key, "options.no-commit"))
+ opts->no_commit = git_config_bool_or_int(key, value, &error_flag);
+ else if (!strcmp(key, "options.edit"))
+ opts->edit = git_config_bool_or_int(key, value, &error_flag);
+ else if (!strcmp(key, "options.signoff"))
+ opts->signoff = git_config_bool_or_int(key, value, &error_flag);
+ else if (!strcmp(key, "options.record-origin"))
+ opts->record_origin = git_config_bool_or_int(key, value, &error_flag);
+ else if (!strcmp(key, "options.allow-ff"))
+ opts->allow_ff = git_config_bool_or_int(key, value, &error_flag);
+ else if (!strcmp(key, "options.mainline"))
+ opts->mainline = git_config_int(key, value);
+ else if (!strcmp(key, "options.strategy"))
+ git_config_string(&opts->strategy, key, value);
+ else if (!strcmp(key, "options.strategy-option")) {
+ ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc);
+ opts->xopts[opts->xopts_nr++] = xstrdup(value);
+ } else
+ return error(_("Invalid key: %s"), key);
+
+ if (!error_flag)
+ return error(_("Invalid value for %s: %s"), key, value);
+
+ return 0;
+}
+
+static void read_populate_opts(struct replay_opts **opts_ptr)
+{
+ const char *opts_file = git_path(SEQ_OPTS_FILE);
+
+ if (!file_exists(opts_file))
+ return;
+ if (git_config_from_file(populate_opts_cb, opts_file, *opts_ptr) < 0)
+ die(_("Malformed options sheet: %s"), opts_file);
+}
+
+static void walk_revs_populate_todo(struct replay_insn_list **todo_list,
+ struct replay_opts *opts)
+{
+ struct commit *commit;
+ struct replay_insn_list **next;
+
+ prepare_revs(opts);
+
+ next = todo_list;
+ while ((commit = get_revision(opts->revs)))
+ next = replay_insn_list_append(opts->action, commit, next);
+}
+
+static int create_seq_dir(void)
+{
+ const char *seq_dir = git_path(SEQ_DIR);
+
+ if (file_exists(seq_dir))
+ return error(_("%s already exists."), seq_dir);
+ else if (mkdir(seq_dir, 0777) < 0)
+ die_errno(_("Could not create sequencer directory '%s'."), seq_dir);
+ return 0;
+}
+
+static void save_head(const char *head)
+{
+ const char *head_file = git_path(SEQ_HEAD_FILE);
+ static struct lock_file head_lock;
+ struct strbuf buf = STRBUF_INIT;
+ int fd;
+
+ fd = hold_lock_file_for_update(&head_lock, head_file, LOCK_DIE_ON_ERROR);
+ strbuf_addf(&buf, "%s\n", head);
+ if (write_in_full(fd, buf.buf, buf.len) < 0)
+ die_errno(_("Could not write to %s."), head_file);
+ if (commit_lock_file(&head_lock) < 0)
+ die(_("Error wrapping up %s."), head_file);
+}
+
+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;
+ struct strbuf buf = STRBUF_INIT;
+ int fd;
+
+ fd = hold_lock_file_for_update(&todo_lock, todo_file, LOCK_DIE_ON_ERROR);
+ 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);
+ die_errno(_("Could not write to %s."), todo_file);
+ }
+ if (commit_lock_file(&todo_lock) < 0) {
+ strbuf_release(&buf);
+ die(_("Error wrapping up %s."), todo_file);
+ }
+ strbuf_release(&buf);
+}
+
+static void save_opts(struct replay_opts *opts)
+{
+ const char *opts_file = git_path(SEQ_OPTS_FILE);
+
+ if (opts->no_commit)
+ git_config_set_in_file(opts_file, "options.no-commit", "true");
+ if (opts->edit)
+ git_config_set_in_file(opts_file, "options.edit", "true");
+ if (opts->signoff)
+ git_config_set_in_file(opts_file, "options.signoff", "true");
+ if (opts->record_origin)
+ git_config_set_in_file(opts_file, "options.record-origin", "true");
+ if (opts->allow_ff)
+ git_config_set_in_file(opts_file, "options.allow-ff", "true");
+ if (opts->mainline) {
+ struct strbuf buf = STRBUF_INIT;
+ strbuf_addf(&buf, "%d", opts->mainline);
+ git_config_set_in_file(opts_file, "options.mainline", buf.buf);
+ strbuf_release(&buf);
+ }
+ if (opts->strategy)
+ git_config_set_in_file(opts_file, "options.strategy", opts->strategy);
+ if (opts->xopts) {
+ int i;
+ for (i = 0; i < opts->xopts_nr; i++)
+ git_config_set_multivar_in_file(opts_file,
+ "options.strategy-option",
+ opts->xopts[i], "^$", 0);
+ }
+}
+
+static int pick_commits(struct replay_insn_list *todo_list,
+ struct replay_opts *opts)
+{
+ struct replay_insn_list *cur;
+ int res;
+
+ setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
+ if (opts->allow_ff)
+ assert(!(opts->signoff || opts->no_commit ||
+ opts->record_origin || opts->edit));
+ read_and_refresh_cache(opts);
+
+ for (cur = todo_list; cur; cur = cur->next) {
+ save_todo(cur);
+ res = do_pick_commit(cur->operand, cur->action, opts);
+ if (res) {
+ if (!cur->next)
+ /*
+ * An error was encountered while
+ * picking the last commit; the
+ * sequencer state is useless now --
+ * the user simply needs to resolve
+ * the conflict and commit
+ */
+ remove_sequencer_state(0);
+ return res;
+ }
+ }
+
+ /*
+ * Sequence of picks finished successfully; cleanup by
+ * removing the .git/sequencer directory
+ */
+ remove_sequencer_state(1);
+ return 0;
+}
+
+int sequencer_pick_revisions(struct replay_opts *opts)
+{
+ struct replay_insn_list *todo_list = NULL;
+ unsigned char sha1[20];
+
+ if (opts->subcommand == REPLAY_NONE)
+ assert(opts->revs);
+
+ read_and_refresh_cache(opts);
+
+ /*
+ * Decide what to do depending on the arguments; a fresh
+ * cherry-pick should be handled differently from an existing
+ * one that is being continued
+ */
+ if (opts->subcommand == REPLAY_RESET) {
+ remove_sequencer_state(1);
+ return 0;
+ } else if (opts->subcommand == REPLAY_CONTINUE) {
+ if (!file_exists(git_path(SEQ_TODO_FILE)))
+ goto error;
+ read_populate_opts(&opts);
+ read_populate_todo(&todo_list);
+
+ /* Verify that the conflict has been resolved */
+ if (!index_differs_from("HEAD", 0))
+ todo_list = todo_list->next;
+ } else {
+ /*
+ * Start a new cherry-pick/ revert sequence; but
+ * first, make sure that an existing one isn't in
+ * progress
+ */
+
+ walk_revs_populate_todo(&todo_list, opts);
+ if (create_seq_dir() < 0) {
+ error(_("A cherry-pick or revert is in progress."));
+ advise(_("Use --continue to continue the operation"));
+ advise(_("or --reset to forget about it"));
+ return -1;
+ }
+ if (get_sha1("HEAD", sha1)) {
+ if (opts->action == REPLAY_REVERT)
+ return error(_("Can't revert as initial commit"));
+ return error(_("Can't cherry-pick into empty head"));
+ }
+ save_head(sha1_to_hex(sha1));
+ save_opts(opts);
+ }
+ return pick_commits(todo_list, opts);
+error:
+ return error(_("No %s in progress"), action_name(opts));
+}
diff --git a/sequencer.h b/sequencer.h
index f4db257..92b2d63 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -8,6 +8,30 @@
#define SEQ_OPTS_FILE "sequencer/opts"
enum replay_action { REPLAY_REVERT, REPLAY_PICK };
+enum replay_subcommand { REPLAY_NONE, REPLAY_RESET, REPLAY_CONTINUE };
+
+struct replay_opts {
+ enum replay_action action;
+ enum replay_subcommand subcommand;
+
+ /* Boolean options */
+ int edit;
+ int record_origin;
+ int no_commit;
+ int signoff;
+ int allow_ff;
+ int allow_rerere_auto;
+
+ int mainline;
+
+ /* Merge strategy */
+ const char *strategy;
+ const char **xopts;
+ size_t xopts_nr, xopts_alloc;
+
+ /* Only used by REPLAY_NONE */
+ struct rev_info *revs;
+};
struct replay_insn_list {
enum replay_action action;
@@ -25,4 +49,6 @@ struct replay_insn_list {
*/
void remove_sequencer_state(int aggressive);
+int sequencer_pick_revisions(struct replay_opts *opts);
+
#endif
--
1.7.6.351.gb35ac.dirty
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