#include "diff.h"
#include "wt-status.h"
#include "revision.h"
+#include "rerere.h"
static char const * const builtin_rebase_usage[] = {
N_("git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] "
struct commit *onto;
const char *onto_name;
const char *revisions;
+ const char *switch_to;
int root;
struct commit *restrict_revision;
int dont_finish_rebase;
REBASE_VERBOSE = 1<<1,
REBASE_DIFFSTAT = 1<<2,
REBASE_FORCE = 1<<3,
+ REBASE_INTERACTIVE_EXPLICIT = 1<<4,
} flags;
struct strbuf git_am_opt;
+ const char *action;
+ int signoff;
+ int allow_rerere_autoupdate;
};
static int is_interactive(struct rebase_options *opts)
return path.buf;
}
+/* Read one file, then strip line endings */
+static int read_one(const char *path, struct strbuf *buf)
+{
+ if (strbuf_read_file(buf, path, 0) < 0)
+ return error_errno(_("could not read '%s'"), path);
+ strbuf_trim_trailing_newline(buf);
+ return 0;
+}
+
+/* Initialize the rebase options from the state directory. */
+static int read_basic_state(struct rebase_options *opts)
+{
+ struct strbuf head_name = STRBUF_INIT;
+ struct strbuf buf = STRBUF_INIT;
+ struct object_id oid;
+
+ if (read_one(state_dir_path("head-name", opts), &head_name) ||
+ read_one(state_dir_path("onto", opts), &buf))
+ return -1;
+ opts->head_name = starts_with(head_name.buf, "refs/") ?
+ xstrdup(head_name.buf) : NULL;
+ strbuf_release(&head_name);
+ if (get_oid(buf.buf, &oid))
+ return error(_("could not get 'onto': '%s'"), buf.buf);
+ opts->onto = lookup_commit_or_die(&oid, buf.buf);
+
+ /*
+ * We always write to orig-head, but interactive rebase used to write to
+ * head. Fall back to reading from head to cover for the case that the
+ * user upgraded git with an ongoing interactive rebase.
+ */
+ strbuf_reset(&buf);
+ if (file_exists(state_dir_path("orig-head", opts))) {
+ if (read_one(state_dir_path("orig-head", opts), &buf))
+ return -1;
+ } else if (read_one(state_dir_path("head", opts), &buf))
+ return -1;
+ if (get_oid(buf.buf, &opts->orig_head))
+ return error(_("invalid orig-head: '%s'"), buf.buf);
+
+ strbuf_reset(&buf);
+ if (read_one(state_dir_path("quiet", opts), &buf))
+ return -1;
+ if (buf.len)
+ opts->flags &= ~REBASE_NO_QUIET;
+ else
+ opts->flags |= REBASE_NO_QUIET;
+
+ if (file_exists(state_dir_path("verbose", opts)))
+ opts->flags |= REBASE_VERBOSE;
+
+ if (file_exists(state_dir_path("signoff", opts))) {
+ opts->signoff = 1;
+ opts->flags |= REBASE_FORCE;
+ }
+
+ if (file_exists(state_dir_path("allow_rerere_autoupdate", opts))) {
+ strbuf_reset(&buf);
+ if (read_one(state_dir_path("allow_rerere_autoupdate", opts),
+ &buf))
+ return -1;
+ if (!strcmp(buf.buf, "--rerere-autoupdate"))
+ opts->allow_rerere_autoupdate = 1;
+ else if (!strcmp(buf.buf, "--no-rerere-autoupdate"))
+ opts->allow_rerere_autoupdate = 0;
+ else
+ warning(_("ignoring invalid allow_rerere_autoupdate: "
+ "'%s'"), buf.buf);
+ } else
+ opts->allow_rerere_autoupdate = -1;
+
+ strbuf_release(&buf);
+
+ return 0;
+}
+
static int finish_rebase(struct rebase_options *opts)
{
struct strbuf dir = STRBUF_INIT;
add_var(&script_snippet, "state_dir", opts->state_dir);
add_var(&script_snippet, "upstream_name", opts->upstream_name);
- add_var(&script_snippet, "upstream",
- oid_to_hex(&opts->upstream->object.oid));
- add_var(&script_snippet, "head_name", opts->head_name);
+ add_var(&script_snippet, "upstream", opts->upstream ?
+ oid_to_hex(&opts->upstream->object.oid) : NULL);
+ add_var(&script_snippet, "head_name",
+ opts->head_name ? opts->head_name : "detached HEAD");
add_var(&script_snippet, "orig_head", oid_to_hex(&opts->orig_head));
- add_var(&script_snippet, "onto", oid_to_hex(&opts->onto->object.oid));
+ add_var(&script_snippet, "onto", opts->onto ?
+ oid_to_hex(&opts->onto->object.oid) : NULL);
add_var(&script_snippet, "onto_name", opts->onto_name);
add_var(&script_snippet, "revisions", opts->revisions);
add_var(&script_snippet, "restrict_revision", opts->restrict_revision ?
opts->flags & REBASE_DIFFSTAT ? "t" : "");
add_var(&script_snippet, "force_rebase",
opts->flags & REBASE_FORCE ? "t" : "");
+ if (opts->switch_to)
+ add_var(&script_snippet, "switch_to", opts->switch_to);
+ add_var(&script_snippet, "action", opts->action ? opts->action : "");
+ add_var(&script_snippet, "signoff", opts->signoff ? "--signoff" : "");
+ add_var(&script_snippet, "allow_rerere_autoupdate",
+ opts->allow_rerere_autoupdate < 0 ? "" :
+ opts->allow_rerere_autoupdate ?
+ "--rerere-autoupdate" : "--no-rerere-autoupdate");
switch (opts->type) {
case REBASE_AM:
*old_orig = NULL, oid_old_orig;
int ret = 0;
+ if (switch_to_branch && !starts_with(switch_to_branch, "refs/"))
+ BUG("Not a fully qualified branch: '%s'", switch_to_branch);
+
if (hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0)
return -1;
return res && is_linear_history(onto, head);
}
+/* -i followed by -m is still -i */
+static int parse_opt_merge(const struct option *opt, const char *arg, int unset)
+{
+ struct rebase_options *opts = opt->value;
+
+ if (!is_interactive(opts))
+ opts->type = REBASE_MERGE;
+
+ return 0;
+}
+
+/* -i followed by -p is still explicitly interactive, but -p alone is not */
+static int parse_opt_interactive(const struct option *opt, const char *arg,
+ int unset)
+{
+ struct rebase_options *opts = opt->value;
+
+ opts->type = REBASE_INTERACTIVE;
+ opts->flags |= REBASE_INTERACTIVE_EXPLICIT;
+
+ return 0;
+}
+
int cmd_rebase(int argc, const char **argv, const char *prefix)
{
struct rebase_options options = {
.type = REBASE_UNSPECIFIED,
.flags = REBASE_NO_QUIET,
.git_am_opt = STRBUF_INIT,
+ .allow_rerere_autoupdate = -1,
};
const char *branch_name;
- int ret, flags;
+ int ret, flags, total_argc, in_progress = 0;
int ok_to_skip_pre_rebase = 0;
struct strbuf msg = STRBUF_INIT;
struct strbuf revisions = STRBUF_INIT;
+ struct strbuf buf = STRBUF_INIT;
struct object_id merge_base;
+ enum {
+ NO_ACTION,
+ ACTION_CONTINUE,
+ ACTION_SKIP,
+ ACTION_ABORT,
+ ACTION_QUIT,
+ ACTION_EDIT_TODO,
+ ACTION_SHOW_CURRENT_PATCH,
+ } action = NO_ACTION;
+ int committer_date_is_author_date = 0;
struct option builtin_rebase_options[] = {
OPT_STRING(0, "onto", &options.onto_name,
N_("revision"),
{OPTION_NEGBIT, 'n', "no-stat", &options.flags, NULL,
N_("do not show diffstat of what changed upstream"),
PARSE_OPT_NOARG, NULL, REBASE_DIFFSTAT },
+ OPT_BOOL(0, "signoff", &options.signoff,
+ N_("add a Signed-off-by: line to each commit")),
+ OPT_BOOL(0, "committer-date-is-author-date",
+ &committer_date_is_author_date,
+ N_("passed to 'git am'")),
OPT_BIT('f', "force-rebase", &options.flags,
N_("cherry-pick all commits, even if unchanged"),
REBASE_FORCE),
OPT_BIT(0, "no-ff", &options.flags,
N_("cherry-pick all commits, even if unchanged"),
REBASE_FORCE),
+ OPT_CMDMODE(0, "continue", &action, N_("continue"),
+ ACTION_CONTINUE),
+ OPT_CMDMODE(0, "skip", &action,
+ N_("skip current patch and continue"), ACTION_SKIP),
+ OPT_CMDMODE(0, "abort", &action,
+ N_("abort and check out the original branch"),
+ ACTION_ABORT),
+ OPT_CMDMODE(0, "quit", &action,
+ N_("abort but keep HEAD where it is"), ACTION_QUIT),
+ OPT_CMDMODE(0, "edit-todo", &action, N_("edit the todo list "
+ "during an interactive rebase"), ACTION_EDIT_TODO),
+ OPT_CMDMODE(0, "show-current-patch", &action,
+ N_("show the patch file being applied or merged"),
+ ACTION_SHOW_CURRENT_PATCH),
+ { OPTION_CALLBACK, 'm', "merge", &options, NULL,
+ N_("use merging strategies to rebase"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ parse_opt_merge },
+ { OPTION_CALLBACK, 'i', "interactive", &options, NULL,
+ N_("let the user edit the list of commits to rebase"),
+ PARSE_OPT_NOARG | PARSE_OPT_NONEG,
+ parse_opt_interactive },
+ OPT_SET_INT('p', "preserve-merges", &options.type,
+ N_("try to recreate merges instead of ignoring "
+ "them"), REBASE_PRESERVE_MERGES),
+ OPT_BOOL(0, "rerere-autoupdate",
+ &options.allow_rerere_autoupdate,
+ N_("allow rerere to update index with resolved "
+ "conflict")),
OPT_END(),
};
git_config(rebase_config, &options);
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "%s/applying", apply_dir());
+ if(file_exists(buf.buf))
+ die(_("It looks like 'git am' is in progress. Cannot rebase."));
+
+ if (is_directory(apply_dir())) {
+ options.type = REBASE_AM;
+ options.state_dir = apply_dir();
+ } else if (is_directory(merge_dir())) {
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "%s/rewritten", merge_dir());
+ if (is_directory(buf.buf)) {
+ options.type = REBASE_PRESERVE_MERGES;
+ options.flags |= REBASE_INTERACTIVE_EXPLICIT;
+ } else {
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "%s/interactive", merge_dir());
+ if(file_exists(buf.buf)) {
+ options.type = REBASE_INTERACTIVE;
+ options.flags |= REBASE_INTERACTIVE_EXPLICIT;
+ } else
+ options.type = REBASE_MERGE;
+ }
+ options.state_dir = merge_dir();
+ }
+
+ if (options.type != REBASE_UNSPECIFIED)
+ in_progress = 1;
+
+ total_argc = argc;
argc = parse_options(argc, argv, prefix,
builtin_rebase_options,
builtin_rebase_usage, 0);
+ if (action != NO_ACTION && total_argc != 2) {
+ usage_with_options(builtin_rebase_usage,
+ builtin_rebase_options);
+ }
+
if (argc > 2)
usage_with_options(builtin_rebase_usage,
builtin_rebase_options);
+ if (action != NO_ACTION && !in_progress)
+ die(_("No rebase in progress?"));
+
+ if (action == ACTION_EDIT_TODO && !is_interactive(&options))
+ die(_("The --edit-todo action can only be used during "
+ "interactive rebase."));
+
+ switch (action) {
+ case ACTION_CONTINUE: {
+ struct object_id head;
+ struct lock_file lock_file = LOCK_INIT;
+ int fd;
+
+ options.action = "continue";
+
+ /* Sanity check */
+ if (get_oid("HEAD", &head))
+ die(_("Cannot read HEAD"));
+
+ fd = hold_locked_index(&lock_file, 0);
+ if (read_index(the_repository->index) < 0)
+ die(_("could not read index"));
+ refresh_index(the_repository->index, REFRESH_QUIET, NULL, NULL,
+ NULL);
+ if (0 <= fd)
+ update_index_if_able(the_repository->index,
+ &lock_file);
+ rollback_lock_file(&lock_file);
+
+ if (has_unstaged_changes(1)) {
+ puts(_("You must edit all merge conflicts and then\n"
+ "mark them as resolved using git add"));
+ exit(1);
+ }
+ if (read_basic_state(&options))
+ exit(1);
+ goto run_rebase;
+ }
+ case ACTION_SKIP: {
+ struct string_list merge_rr = STRING_LIST_INIT_DUP;
+
+ options.action = "skip";
+
+ rerere_clear(&merge_rr);
+ string_list_clear(&merge_rr, 1);
+
+ if (reset_head(NULL, "reset", NULL, 0) < 0)
+ die(_("could not discard worktree changes"));
+ if (read_basic_state(&options))
+ exit(1);
+ goto run_rebase;
+ }
+ case ACTION_ABORT: {
+ struct string_list merge_rr = STRING_LIST_INIT_DUP;
+ options.action = "abort";
+
+ rerere_clear(&merge_rr);
+ string_list_clear(&merge_rr, 1);
+
+ if (read_basic_state(&options))
+ exit(1);
+ if (reset_head(&options.orig_head, "reset",
+ options.head_name, 0) < 0)
+ die(_("could not move back to %s"),
+ oid_to_hex(&options.orig_head));
+ ret = finish_rebase(&options);
+ goto cleanup;
+ }
+ case ACTION_QUIT: {
+ strbuf_reset(&buf);
+ strbuf_addstr(&buf, options.state_dir);
+ ret = !!remove_dir_recursively(&buf, 0);
+ if (ret)
+ die(_("could not remove '%s'"), options.state_dir);
+ goto cleanup;
+ }
+ case ACTION_EDIT_TODO:
+ options.action = "edit-todo";
+ options.dont_finish_rebase = 1;
+ goto run_rebase;
+ case ACTION_SHOW_CURRENT_PATCH:
+ options.action = "show-current-patch";
+ options.dont_finish_rebase = 1;
+ goto run_rebase;
+ case NO_ACTION:
+ break;
+ default:
+ BUG("action: %d", action);
+ }
+
+ /* Make sure no rebase is in progress */
+ if (in_progress) {
+ const char *last_slash = strrchr(options.state_dir, '/');
+ const char *state_dir_base =
+ last_slash ? last_slash + 1 : options.state_dir;
+ const char *cmd_live_rebase =
+ "git rebase (--continue | --abort | --skip)";
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "rm -fr \"%s\"", options.state_dir);
+ die(_("It seems that there is already a %s directory, and\n"
+ "I wonder if you are in the middle of another rebase. "
+ "If that is the\n"
+ "case, please try\n\t%s\n"
+ "If that is not the case, please\n\t%s\n"
+ "and run me again. I am stopping in case you still "
+ "have something\n"
+ "valuable there.\n"),
+ state_dir_base, cmd_live_rebase, buf.buf);
+ }
+
if (!(options.flags & REBASE_NO_QUIET))
strbuf_addstr(&options.git_am_opt, " -q");
+ if (committer_date_is_author_date) {
+ strbuf_addstr(&options.git_am_opt,
+ " --committer-date-is-author-date");
+ options.flags |= REBASE_FORCE;
+ }
+
switch (options.type) {
case REBASE_MERGE:
case REBASE_INTERACTIVE:
break;
}
+ if (options.signoff) {
+ if (options.type == REBASE_PRESERVE_MERGES)
+ die("cannot combine '--signoff' with "
+ "'--preserve-merges'");
+ strbuf_addstr(&options.git_am_opt, " --signoff");
+ options.flags |= REBASE_FORCE;
+ }
+
if (!options.root) {
if (argc < 1)
die("TODO: handle @{upstream}");
* branch_name -- branch/commit being rebased, or
* HEAD (already detached)
* orig_head -- commit object name of tip of the branch before rebasing
- * head_name -- refs/heads/<that-branch> or "detached HEAD"
+ * head_name -- refs/heads/<that-branch> or NULL (detached HEAD)
*/
- if (argc > 0)
- die("TODO: handle switch_to");
- else {
+ if (argc == 1) {
+ /* Is it "rebase other branchname" or "rebase other commit"? */
+ branch_name = argv[0];
+ options.switch_to = argv[0];
+
+ /* Is it a local branch? */
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "refs/heads/%s", branch_name);
+ if (!read_ref(buf.buf, &options.orig_head))
+ options.head_name = xstrdup(buf.buf);
+ /* If not is it a valid ref (branch or commit)? */
+ else if (!get_oid(branch_name, &options.orig_head))
+ options.head_name = NULL;
+ else
+ die(_("fatal: no such branch/commit '%s'"),
+ branch_name);
+ } else if (argc == 0) {
/* Do not need to switch branches, we are already on it. */
options.head_name =
xstrdup_or_null(resolve_ref_unsafe("HEAD", 0, NULL,
branch_name = options.head_name;
} else {
- options.head_name = xstrdup("detached HEAD");
+ free(options.head_name);
+ options.head_name = NULL;
branch_name = "HEAD";
}
if (get_oid("HEAD", &options.orig_head))
die(_("Could not resolve HEAD to a revision"));
- }
+ } else
+ BUG("unexpected number of arguments left to parse");
if (read_index(the_repository->index) < 0)
die(_("could not read index"));
int flag;
if (!(options.flags & REBASE_FORCE)) {
+ /* Lazily switch to the target branch if needed... */
+ if (options.switch_to) {
+ struct object_id oid;
+
+ if (get_oid(options.switch_to, &oid) < 0) {
+ ret = !!error(_("could not parse '%s'"),
+ options.switch_to);
+ goto cleanup;
+ }
+
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "rebase: checkout %s",
+ options.switch_to);
+ if (reset_head(&oid, "checkout",
+ options.head_name, 0) < 0) {
+ ret = !!error(_("could not switch to "
+ "%s"),
+ options.switch_to);
+ goto cleanup;
+ }
+ }
+
if (!(options.flags & REBASE_NO_QUIET))
; /* be quiet */
else if (!strcmp(branch_name, "HEAD") &&
diff_flush(&opts);
}
+ if (is_interactive(&options))
+ goto run_rebase;
+
/* Detach HEAD and reset the tree */
if (options.flags & REBASE_NO_QUIET)
printf(_("First, rewinding head to replay your work on top of "
options.revisions = revisions.buf;
+run_rebase:
ret = !!run_specific_rebase(&options);
cleanup: