This refactors sequencer_add_exec_commands() to work on a todo_list to
avoid redundant reads and writes to the disk.
Instead of inserting the `exec' commands between the other commands and
re-parsing the buffer at the end, they are appended to the buffer once,
and a new list of items is created. Items from the old list are copied
across and new `exec' items are appended when necessary. This
eliminates the need to reparse the buffer, but this also means we have
to use todo_list_write_to_disk() to write the file.
todo_list_add_exec_commands() and sequencer_add_exec_commands() are
modified to take a string list instead of a string -- one item for each
command. This makes it easier to insert a new command to the todo list
for each command to execute.
sequencer_add_exec_commands() still reads the todo list from the disk,
as it is needed by rebase -p.
complete_action() still uses sequencer_add_exec_commands() for now.
This will be changed in a future commit.
Signed-off-by: Alban Gruin <alban.gruin@xxxxxxxxx>
---
builtin/rebase--interactive.c | 15 +++--
sequencer.c | 109 +++++++++++++++++++++-------------
sequencer.h | 5 +-
3 files changed, 82 insertions(+), 47 deletions(-)
diff --git a/builtin/rebase--interactive.c b/builtin/rebase--interactive.c
index df19ccaeb9..c131fd4a27 100644
--- a/builtin/rebase--interactive.c
+++ b/builtin/rebase--interactive.c
@@ -65,7 +65,7 @@ static int do_interactive_rebase(struct replay_opts *opts, unsigned flags,
const char *onto, const char *onto_name,
const char *squash_onto, const char *head_name,
const char *restrict_revision, char *raw_strategies,
- const char *cmd, unsigned autosquash)
+ struct string_list *commands, unsigned autosquash)
{
int ret;
const char *head_hash = NULL;
@@ -116,7 +116,7 @@ static int do_interactive_rebase(struct replay_opts *opts, unsigned flags,
discard_cache();
ret = complete_action(the_repository, opts, flags,
shortrevisions, onto_name, onto,
- head_hash, cmd, autosquash);
+ head_hash, commands, autosquash);
}
free(revisions);
@@ -139,6 +139,7 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
const char *onto = NULL, *onto_name = NULL, *restrict_revision = NULL,
*squash_onto = NULL, *upstream = NULL, *head_name = NULL,
*switch_to = NULL, *cmd = NULL;
+ struct string_list commands = STRING_LIST_INIT_DUP;
char *raw_strategies = NULL;
enum {
NONE = 0, CONTINUE, SKIP, EDIT_TODO, SHOW_CURRENT_PATCH,
@@ -221,6 +222,11 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
warning(_("--[no-]rebase-cousins has no effect without "
"--rebase-merges"));
+ if (cmd && *cmd) {
+ string_list_split(&commands, cmd, '\n', -1);
+ --commands.nr;
+ }
+
switch (command) {
case NONE:
if (!onto && !upstream)
@@ -228,7 +234,7 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
ret = do_interactive_rebase(&opts, flags, switch_to, upstream, onto,
onto_name, squash_onto, head_name, restrict_revision,
- raw_strategies, cmd, autosquash);
+ raw_strategies, &commands, autosquash);
break;
case SKIP: {
struct string_list merge_rr = STRING_LIST_INIT_DUP;
@@ -262,11 +268,12 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
ret = rearrange_squash(the_repository);
break;
case ADD_EXEC:
- ret = sequencer_add_exec_commands(the_repository, cmd);
+ ret = sequencer_add_exec_commands(the_repository, &commands);
break;
default:
BUG("invalid command '%d'", command);
}
+ string_list_clear(&commands, 1);
return !!ret;
}
diff --git a/sequencer.c b/sequencer.c
index 99e12c751e..82ca3432cd 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -4505,21 +4505,27 @@ int sequencer_make_script(struct repository *r, FILE *out,
* Add commands after pick and (series of) squash/fixup commands
* in the todo list.
*/
-int sequencer_add_exec_commands(struct repository *r,
- const char *commands)
+static void todo_list_add_exec_commands(struct todo_list *todo_list,
+ struct string_list *commands)
{
- const char *todo_file = rebase_path_todo();
- struct todo_list todo_list = TODO_LIST_INIT;
- struct strbuf *buf = &todo_list.buf;
- size_t offset = 0, commands_len = strlen(commands);
- int i, insert;
+ struct strbuf *buf = &todo_list->buf;
+ size_t base_offset = buf->len;
+ int i, insert, nr = 0, alloc = 0;
+ struct todo_item *items = NULL, *base_items = NULL;
- if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0)
- return error(_("could not read '%s'."), todo_file);
+ base_items = xcalloc(commands->nr, sizeof(struct todo_item));
+ for (i = 0; i < commands->nr; i++) {
+ size_t command_len = strlen(commands->items[i].string);
- if (todo_list_parse_insn_buffer(r, todo_list.buf.buf, &todo_list)) {
- todo_list_release(&todo_list);
- return error(_("unusable todo list: '%s'"), todo_file);
+ strbuf_addstr(buf, commands->items[i].string);
+ strbuf_addch(buf, '\n');
+
+ base_items[i].command = TODO_EXEC;
+ base_items[i].offset_in_buf = base_offset;
+ base_items[i].arg_offset = base_offset + strlen("exec ");
+ base_items[i].arg_len = command_len - strlen("exec ");
+
+ base_offset += command_len + 1;
}
/*
@@ -4527,39 +4533,60 @@ int sequencer_add_exec_commands(struct repository *r,
* are considered part of the pick, so we insert the commands *after*
* those chains if there are any.
*/
- insert = -1;
- for (i = 0; i < todo_list.nr; i++) {
- enum todo_command command = todo_list.items[i].command;
-
- if (insert >= 0) {
- /* skip fixup/squash chains */
- if (command == TODO_COMMENT)
- continue;
- else if (is_fixup(command)) {
- insert = i + 1;
- continue;
- }
- strbuf_insert(buf,
- todo_list.items[insert].offset_in_buf +
- offset, commands, commands_len);
- offset += commands_len;
- insert = -1;
+ insert = 0;
+ for (i = 0; i < todo_list->nr; i++) {
+ enum todo_command command = todo_list->items[i].command;
+ if (insert && !is_fixup(command)) {
+ ALLOC_GROW(items, nr + commands->nr, alloc);
+ COPY_ARRAY(items + nr, base_items, commands->nr);
+ nr += commands->nr;
+
+ insert = 0;
}
- if (command == TODO_PICK || command == TODO_MERGE)
- insert = i + 1;
+ ALLOC_GROW(items, nr + 1, alloc);
+ items[nr++] = todo_list->items[i];
+
+ if (command == TODO_PICK || command == TODO_MERGE || is_fixup(command))
+ insert = 1;
}
/* insert or append final <commands> */
- if (insert >= 0 && insert < todo_list.nr)
- strbuf_insert(buf, todo_list.items[insert].offset_in_buf +
- offset, commands, commands_len);
- else if (insert >= 0 || !offset)
- strbuf_add(buf, commands, commands_len);
+ if (insert || nr == todo_list->nr) {
+ ALLOC_GROW(items, nr + commands->nr, alloc);
+ COPY_ARRAY(items + nr, base_items, commands->nr);
+ nr += commands->nr;
+ }
+
+ free(base_items);
+ FREE_AND_NULL(todo_list->items);
+ todo_list->items = items;
+ todo_list->nr = nr;
+ todo_list->alloc = alloc;
+}
- i = write_message(buf->buf, buf->len, todo_file, 0);
+int sequencer_add_exec_commands(struct repository *r,
+ struct string_list *commands)
+{
+ const char *todo_file = rebase_path_todo();
+ struct todo_list todo_list = TODO_LIST_INIT;
+ int res;
+
+ if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0)
+ return error_errno(_("could not read '%s'."), todo_file);
+
+ if (todo_list_parse_insn_buffer(r, todo_list.buf.buf, &todo_list)) {
+ todo_list_release(&todo_list);
+ return error(_("unusable todo list: '%s'"), todo_file);
+ }
+
+ todo_list_add_exec_commands(&todo_list, commands);
+ res = todo_list_write_to_file(r, &todo_list, todo_file, NULL, NULL, -1, 0);
todo_list_release(&todo_list);
- return i;
+
+ if (res)
+ return error_errno(_("could not write '%s'."), todo_file);
+ return 0;
}
static void todo_list_to_strbuf(struct repository *r, struct todo_list *todo_list,
@@ -4790,7 +4817,7 @@ static int skip_unnecessary_picks(struct repository *r, struct object_id *output
int complete_action(struct repository *r, struct replay_opts *opts, unsigned flags,
const char *shortrevisions, const char *onto_name,
- const char *onto, const char *orig_head, const char *cmd,
+ const char *onto, const char *orig_head, struct string_list *commands,
unsigned autosquash)
{
const char *shortonto, *todo_file = rebase_path_todo();
@@ -4809,8 +4836,8 @@ int complete_action(struct repository *r, struct replay_opts *opts, unsigned fla
if (autosquash && rearrange_squash(r))
return -1;
- if (cmd && *cmd)
- sequencer_add_exec_commands(r, cmd);
+ if (commands->nr)
+ sequencer_add_exec_commands(r, commands);
if (strbuf_read_file(buf, todo_file, 0) < 0)
return error_errno(_("could not read '%s'."), todo_file);
diff --git a/sequencer.h b/sequencer.h
index 217353e9f0..87d04a3b9b 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -146,12 +146,13 @@ int sequencer_make_script(struct repository *r, FILE *out, int argc,
const char **argv,
unsigned flags);
-int sequencer_add_exec_commands(struct repository *r, const char *command);
+int sequencer_add_exec_commands(struct repository *r,
+ struct string_list *commands);
int transform_todo_file(struct repository *r, unsigned flags);
int check_todo_list_from_file(struct repository *r);
int complete_action(struct repository *r, struct replay_opts *opts, unsigned flags,
const char *shortrevisions, const char *onto_name,
- const char *onto, const char *orig_head, const char *cmd,
+ const char *onto, const char *orig_head, struct string_list *commands,
unsigned autosquash);
int rearrange_squash(struct repository *r);
--
2.20.1
