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sequencer (rebase -i): implement the 'noop' command

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The 'noop' command is probably the most boring of all rebase -i commands
to support in the sequencer.

Which makes it an excellent candidate for this first stab to add support
for rebase -i's commands to the sequencer.

For the moment, let's also treat empty lines and commented-out lines as
'noop'; We will refine that handling later in this patch series.

To make it easier to identify "classes" of todo_commands (such as:
determine whether a command is pick-like, i.e. handles a single commit),
let's enforce a certain order of said commands.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin
2016-04-13 14:07:35 +02:00
parent ff32686431
commit e7a3558bee
1 changed files with 32 additions and 3 deletions
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35
sequencer.c
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@@ -642,14 +642,23 @@ static int allow_empty(struct replay_opts *opts, struct commit *commit)
return 1;
}
/*
* Note that ordering matters in this enum. Not only must it match the mapping
* below, it is also divided into several sections that matter. When adding
* new commands, make sure you add it in the right section.
*/
enum todo_command {
/* commands that handle commits */
TODO_PICK = 0,
TODO_REVERT
TODO_REVERT,
/* commands that do nothing but are counted for reporting progress */
TODO_NOOP
};
static const char *todo_command_strings[] = {
"pick",
"revert"
"revert",
"noop"
};
static const char *command_to_string(const enum todo_command command)
@@ -914,6 +923,14 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol)
/* left-trim */
bol += strspn(bol, " \t");
if (bol == eol || *bol == '\r' || *bol == comment_line_char) {
item->command = TODO_NOOP;
item->commit = NULL;
item->arg = bol;
item->arg_len = eol - bol;
return 0;
}
for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++)
if (skip_prefix(bol, todo_command_strings[i], &bol)) {
item->command = i;
@@ -922,6 +939,13 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol)
if (i >= ARRAY_SIZE(todo_command_strings))
return -1;
if (item->command == TODO_NOOP) {
item->commit = NULL;
item->arg = bol;
item->arg_len = eol - bol;
return 0;
}
/* Eat up extra spaces/ tabs before object name */
padding = strspn(bol, " \t");
if (!padding)
@@ -1281,7 +1305,12 @@ static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts)
struct todo_item *item = todo_list->items + todo_list->current;
if (save_todo(todo_list, opts))
return -1;
res = do_pick_commit(item->command, item->commit, opts);
if (item->command <= TODO_REVERT)
res = do_pick_commit(item->command, item->commit,
opts);
else if (item->command != TODO_NOOP)
return error("Unknown command %d", item->command);
todo_list->current++;
if (res)
return res;