#include "cache.h"
+#include "config.h"
#include "lockfile.h"
-#include "sequencer.h"
#include "dir.h"
+#include "object-store.h"
#include "object.h"
#include "commit.h"
+#include "sequencer.h"
#include "tag.h"
#include "run-command.h"
-#include "exec_cmd.h"
+#include "exec-cmd.h"
#include "utf8.h"
#include "cache-tree.h"
#include "diff.h"
#include "merge-recursive.h"
#include "refs.h"
#include "argv-array.h"
+#include "quote.h"
+#include "trailer.h"
+#include "log-tree.h"
+#include "wt-status.h"
+#include "hashmap.h"
+#include "notes-utils.h"
+#include "sigchain.h"
+#include "unpack-trees.h"
+#include "worktree.h"
+#include "oidmap.h"
+#include "oidset.h"
+#include "commit-slab.h"
+#include "alias.h"
+#include "commit-reach.h"
+#include "rebase-interactive.h"
#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
-const char sign_off_header[] = "Signed-off-by: ";
+static const char sign_off_header[] = "Signed-off-by: ";
static const char cherry_picked_prefix[] = "(cherry picked from commit ";
-static GIT_PATH_FUNC(git_path_todo_file, SEQ_TODO_FILE)
-static GIT_PATH_FUNC(git_path_opts_file, SEQ_OPTS_FILE)
-static GIT_PATH_FUNC(git_path_seq_dir, SEQ_DIR)
-static GIT_PATH_FUNC(git_path_head_file, SEQ_HEAD_FILE)
+GIT_PATH_FUNC(git_path_commit_editmsg, "COMMIT_EDITMSG")
+
+GIT_PATH_FUNC(git_path_seq_dir, "sequencer")
+
+static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo")
+static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts")
+static GIT_PATH_FUNC(git_path_head_file, "sequencer/head")
+static GIT_PATH_FUNC(git_path_abort_safety_file, "sequencer/abort-safety")
+
+static GIT_PATH_FUNC(rebase_path, "rebase-merge")
+/*
+ * The file containing rebase commands, comments, and empty lines.
+ * This file is created by "git rebase -i" then edited by the user. As
+ * the lines are processed, they are removed from the front of this
+ * file and written to the tail of 'done'.
+ */
+GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo")
+GIT_PATH_FUNC(rebase_path_todo_backup, "rebase-merge/git-rebase-todo.backup")
+
+/*
+ * The rebase command lines that have already been processed. A line
+ * is moved here when it is first handled, before any associated user
+ * actions.
+ */
+static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done")
+/*
+ * The file to keep track of how many commands were already processed (e.g.
+ * for the prompt).
+ */
+static GIT_PATH_FUNC(rebase_path_msgnum, "rebase-merge/msgnum")
+/*
+ * The file to keep track of how many commands are to be processed in total
+ * (e.g. for the prompt).
+ */
+static GIT_PATH_FUNC(rebase_path_msgtotal, "rebase-merge/end")
+/*
+ * The commit message that is planned to be used for any changes that
+ * need to be committed following a user interaction.
+ */
+static GIT_PATH_FUNC(rebase_path_message, "rebase-merge/message")
+/*
+ * The file into which is accumulated the suggested commit message for
+ * squash/fixup commands. When the first of a series of squash/fixups
+ * is seen, the file is created and the commit message from the
+ * previous commit and from the first squash/fixup commit are written
+ * to it. The commit message for each subsequent squash/fixup commit
+ * is appended to the file as it is processed.
+ */
+static GIT_PATH_FUNC(rebase_path_squash_msg, "rebase-merge/message-squash")
+/*
+ * If the current series of squash/fixups has not yet included a squash
+ * command, then this file exists and holds the commit message of the
+ * original "pick" commit. (If the series ends without a "squash"
+ * command, then this can be used as the commit message of the combined
+ * commit without opening the editor.)
+ */
+static GIT_PATH_FUNC(rebase_path_fixup_msg, "rebase-merge/message-fixup")
+/*
+ * This file contains the list fixup/squash commands that have been
+ * accumulated into message-fixup or message-squash so far.
+ */
+static GIT_PATH_FUNC(rebase_path_current_fixups, "rebase-merge/current-fixups")
+/*
+ * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and
+ * GIT_AUTHOR_DATE that will be used for the commit that is currently
+ * being rebased.
+ */
+static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script")
+/*
+ * When an "edit" rebase command is being processed, the SHA1 of the
+ * commit to be edited is recorded in this file. When "git rebase
+ * --continue" is executed, if there are any staged changes then they
+ * will be amended to the HEAD commit, but only provided the HEAD
+ * commit is still the commit to be edited. When any other rebase
+ * command is processed, this file is deleted.
+ */
+static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend")
+/*
+ * When we stop at a given patch via the "edit" command, this file contains
+ * the abbreviated commit name of the corresponding patch.
+ */
+static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha")
+/*
+ * For the post-rewrite hook, we make a list of rewritten commits and
+ * their new sha1s. The rewritten-pending list keeps the sha1s of
+ * commits that have been processed, but not committed yet,
+ * e.g. because they are waiting for a 'squash' command.
+ */
+static GIT_PATH_FUNC(rebase_path_rewritten_list, "rebase-merge/rewritten-list")
+static GIT_PATH_FUNC(rebase_path_rewritten_pending,
+ "rebase-merge/rewritten-pending")
+
+/*
+ * The path of the file containing the OID of the "squash onto" commit, i.e.
+ * the dummy commit used for `reset [new root]`.
+ */
+static GIT_PATH_FUNC(rebase_path_squash_onto, "rebase-merge/squash-onto")
+
+/*
+ * The path of the file listing refs that need to be deleted after the rebase
+ * finishes. This is used by the `label` command to record the need for cleanup.
+ */
+static GIT_PATH_FUNC(rebase_path_refs_to_delete, "rebase-merge/refs-to-delete")
-static int is_rfc2822_line(const char *buf, int len)
+/*
+ * The following files are written by git-rebase just after parsing the
+ * command-line.
+ */
+static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt")
+static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head")
+static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose")
+static GIT_PATH_FUNC(rebase_path_quiet, "rebase-merge/quiet")
+static GIT_PATH_FUNC(rebase_path_signoff, "rebase-merge/signoff")
+static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name")
+static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto")
+static GIT_PATH_FUNC(rebase_path_autostash, "rebase-merge/autostash")
+static GIT_PATH_FUNC(rebase_path_strategy, "rebase-merge/strategy")
+static GIT_PATH_FUNC(rebase_path_strategy_opts, "rebase-merge/strategy_opts")
+static GIT_PATH_FUNC(rebase_path_allow_rerere_autoupdate, "rebase-merge/allow_rerere_autoupdate")
+static GIT_PATH_FUNC(rebase_path_reschedule_failed_exec, "rebase-merge/reschedule-failed-exec")
+
+static int git_sequencer_config(const char *k, const char *v, void *cb)
{
- int i;
+ struct replay_opts *opts = cb;
+ int status;
+
+ if (!strcmp(k, "commit.cleanup")) {
+ const char *s;
+
+ status = git_config_string(&s, k, v);
+ if (status)
+ return status;
+
+ if (!strcmp(s, "verbatim")) {
+ opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_NONE;
+ opts->explicit_cleanup = 1;
+ } else if (!strcmp(s, "whitespace")) {
+ opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_SPACE;
+ opts->explicit_cleanup = 1;
+ } else if (!strcmp(s, "strip")) {
+ opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_ALL;
+ opts->explicit_cleanup = 1;
+ } else if (!strcmp(s, "scissors")) {
+ opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_SCISSORS;
+ opts->explicit_cleanup = 1;
+ } else {
+ warning(_("invalid commit message cleanup mode '%s'"),
+ s);
+ }
- for (i = 0; i < len; i++) {
- int ch = buf[i];
- if (ch == ':')
- return 1;
- if (!isalnum(ch) && ch != '-')
- break;
+ free((char *)s);
+ return status;
}
- return 0;
+ if (!strcmp(k, "commit.gpgsign")) {
+ opts->gpg_sign = git_config_bool(k, v) ? xstrdup("") : NULL;
+ return 0;
+ }
+
+ status = git_gpg_config(k, v, NULL);
+ if (status)
+ return status;
+
+ return git_diff_basic_config(k, v, NULL);
}
-static int is_cherry_picked_from_line(const char *buf, int len)
+void sequencer_init_config(struct replay_opts *opts)
{
- /*
- * We only care that it looks roughly like (cherry picked from ...)
- */
- return len > strlen(cherry_picked_prefix) + 1 &&
- starts_with(buf, cherry_picked_prefix) && buf[len - 1] == ')';
+ opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_NONE;
+ git_config(git_sequencer_config, opts);
+}
+
+static inline int is_rebase_i(const struct replay_opts *opts)
+{
+ return opts->action == REPLAY_INTERACTIVE_REBASE;
+}
+
+static const char *get_dir(const struct replay_opts *opts)
+{
+ if (is_rebase_i(opts))
+ return rebase_path();
+ return git_path_seq_dir();
+}
+
+static const char *get_todo_path(const struct replay_opts *opts)
+{
+ if (is_rebase_i(opts))
+ return rebase_path_todo();
+ return git_path_todo_file();
}
/*
* Returns 3 when sob exists within conforming footer as last entry
*/
static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob,
- int ignore_footer)
+ size_t ignore_footer)
{
- char prev;
- int i, k;
- int len = sb->len - ignore_footer;
- const char *buf = sb->buf;
- int found_sob = 0;
+ struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
+ struct trailer_info info;
+ size_t i;
+ int found_sob = 0, found_sob_last = 0;
- /* footer must end with newline */
- if (!len || buf[len - 1] != '\n')
- return 0;
+ opts.no_divider = 1;
- prev = '\0';
- for (i = len - 1; i > 0; i--) {
- char ch = buf[i];
- if (prev == '\n' && ch == '\n') /* paragraph break */
- break;
- prev = ch;
- }
+ trailer_info_get(&info, sb->buf, &opts);
- /* require at least one blank line */
- if (prev != '\n' || buf[i] != '\n')
+ if (info.trailer_start == info.trailer_end)
return 0;
- /* advance to start of last paragraph */
- while (i < len - 1 && buf[i] == '\n')
- i++;
-
- for (; i < len; i = k) {
- int found_rfc2822;
-
- for (k = i; k < len && buf[k] != '\n'; k++)
- ; /* do nothing */
- k++;
+ for (i = 0; i < info.trailer_nr; i++)
+ if (sob && !strncmp(info.trailers[i], sob->buf, sob->len)) {
+ found_sob = 1;
+ if (i == info.trailer_nr - 1)
+ found_sob_last = 1;
+ }
- found_rfc2822 = is_rfc2822_line(buf + i, k - i - 1);
- if (found_rfc2822 && sob &&
- !strncmp(buf + i, sob->buf, sob->len))
- found_sob = k;
+ trailer_info_release(&info);
- if (!(found_rfc2822 ||
- is_cherry_picked_from_line(buf + i, k - i - 1)))
- return 0;
- }
- if (found_sob == i)
+ if (found_sob_last)
return 3;
if (found_sob)
return 2;
return 1;
}
-static void remove_sequencer_state(void)
+static const char *gpg_sign_opt_quoted(struct replay_opts *opts)
+{
+ static struct strbuf buf = STRBUF_INIT;
+
+ strbuf_reset(&buf);
+ if (opts->gpg_sign)
+ sq_quotef(&buf, "-S%s", opts->gpg_sign);
+ return buf.buf;
+}
+
+int sequencer_remove_state(struct replay_opts *opts)
{
- struct strbuf seq_dir = STRBUF_INIT;
+ struct strbuf buf = STRBUF_INIT;
+ int i, ret = 0;
+
+ if (is_rebase_i(opts) &&
+ strbuf_read_file(&buf, rebase_path_refs_to_delete(), 0) > 0) {
+ char *p = buf.buf;
+ while (*p) {
+ char *eol = strchr(p, '\n');
+ if (eol)
+ *eol = '\0';
+ if (delete_ref("(rebase -i) cleanup", p, NULL, 0) < 0) {
+ warning(_("could not delete '%s'"), p);
+ ret = -1;
+ }
+ if (!eol)
+ break;
+ p = eol + 1;
+ }
+ }
+
+ free(opts->gpg_sign);
+ free(opts->strategy);
+ for (i = 0; i < opts->xopts_nr; i++)
+ free(opts->xopts[i]);
+ free(opts->xopts);
+ strbuf_release(&opts->current_fixups);
+
+ strbuf_reset(&buf);
+ strbuf_addstr(&buf, get_dir(opts));
+ if (remove_dir_recursively(&buf, 0))
+ ret = error(_("could not remove '%s'"), buf.buf);
+ strbuf_release(&buf);
- strbuf_addstr(&seq_dir, git_path(SEQ_DIR));
- remove_dir_recursively(&seq_dir, 0);
- strbuf_release(&seq_dir);
+ return ret;
}
static const char *action_name(const struct replay_opts *opts)
{
- return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick";
+ switch (opts->action) {
+ case REPLAY_REVERT:
+ return N_("revert");
+ case REPLAY_PICK:
+ return N_("cherry-pick");
+ case REPLAY_INTERACTIVE_REBASE:
+ return N_("rebase -i");
+ }
+ die(_("unknown action: %d"), opts->action);
}
struct commit_message {
const char *message;
};
+static const char *short_commit_name(struct commit *commit)
+{
+ return find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV);
+}
+
static int get_message(struct commit *commit, struct commit_message *out)
{
const char *abbrev, *subject;
int subject_len;
out->message = logmsg_reencode(commit, NULL, get_commit_output_encoding());
- abbrev = find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV);
+ abbrev = short_commit_name(commit);
subject_len = find_commit_subject(out->message, &subject);
unuse_commit_buffer(commit, msg->message);
}
-static void print_advice(int show_hint, struct replay_opts *opts)
+static void print_advice(struct repository *r, int show_hint,
+ struct replay_opts *opts)
{
char *msg = getenv("GIT_CHERRY_PICK_HELP");
* (typically rebase --interactive) wants to take care
* of the commit itself so remove CHERRY_PICK_HEAD
*/
- unlink(git_path_cherry_pick_head());
+ unlink(git_path_cherry_pick_head(r));
return;
}
}
}
-static void write_message(struct strbuf *msgbuf, const char *filename)
+static int write_message(const void *buf, size_t len, const char *filename,
+ int append_eol)
{
- 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);
+ struct lock_file msg_file = LOCK_INIT;
+
+ int msg_fd = hold_lock_file_for_update(&msg_file, filename, 0);
+ if (msg_fd < 0)
+ return error_errno(_("could not lock '%s'"), filename);
+ if (write_in_full(msg_fd, buf, len) < 0) {
+ error_errno(_("could not write to '%s'"), filename);
+ rollback_lock_file(&msg_file);
+ return -1;
+ }
+ if (append_eol && write(msg_fd, "\n", 1) < 0) {
+ error_errno(_("could not write eol to '%s'"), filename);
+ rollback_lock_file(&msg_file);
+ return -1;
+ }
if (commit_lock_file(&msg_file) < 0)
- die(_("Error wrapping up %s."), filename);
+ return error(_("failed to finalize '%s'"), filename);
+
+ return 0;
+}
+
+/*
+ * Reads a file that was presumably written by a shell script, i.e. with an
+ * end-of-line marker that needs to be stripped.
+ *
+ * Note that only the last end-of-line marker is stripped, consistent with the
+ * behavior of "$(cat path)" in a shell script.
+ *
+ * Returns 1 if the file was read, 0 if it could not be read or does not exist.
+ */
+static int read_oneliner(struct strbuf *buf,
+ const char *path, int skip_if_empty)
+{
+ int orig_len = buf->len;
+
+ if (!file_exists(path))
+ return 0;
+
+ if (strbuf_read_file(buf, path, 0) < 0) {
+ warning_errno(_("could not read '%s'"), path);
+ return 0;
+ }
+
+ if (buf->len > orig_len && buf->buf[buf->len - 1] == '\n') {
+ if (--buf->len > orig_len && buf->buf[buf->len - 1] == '\r')
+ --buf->len;
+ buf->buf[buf->len] = '\0';
+ }
+
+ if (skip_if_empty && buf->len == orig_len)
+ return 0;
+
+ return 1;
}
-static struct tree *empty_tree(void)
+static struct tree *empty_tree(struct repository *r)
{
- return lookup_tree(EMPTY_TREE_SHA1_BIN);
+ return lookup_tree(r, the_hash_algo->empty_tree);
}
-static int error_dirty_index(struct replay_opts *opts)
+static int error_dirty_index(struct repository *repo, struct replay_opts *opts)
{
- if (read_cache_unmerged())
- return error_resolve_conflict(action_name(opts));
+ if (repo_read_index_unmerged(repo))
+ 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."));
+ error(_("your local changes would be overwritten by %s."),
+ _(action_name(opts)));
if (advice_commit_before_merge)
- advise(_("Commit your changes or stash them to proceed."));
+ advise(_("commit your changes or stash them to proceed."));
return -1;
}
-static int fast_forward_to(const unsigned char *to, const unsigned char *from,
- int unborn, struct replay_opts *opts)
+static void update_abort_safety_file(void)
+{
+ struct object_id head;
+
+ /* Do nothing on a single-pick */
+ if (!file_exists(git_path_seq_dir()))
+ return;
+
+ if (!get_oid("HEAD", &head))
+ write_file(git_path_abort_safety_file(), "%s", oid_to_hex(&head));
+ else
+ write_file(git_path_abort_safety_file(), "%s", "");
+}
+
+static int fast_forward_to(struct repository *r,
+ const struct object_id *to,
+ const struct object_id *from,
+ int unborn,
+ struct replay_opts *opts)
{
struct ref_transaction *transaction;
struct strbuf sb = STRBUF_INIT;
struct strbuf err = STRBUF_INIT;
- read_cache();
- if (checkout_fast_forward(from, to, 1))
- exit(128); /* the callee should have complained already */
+ repo_read_index(r);
+ if (checkout_fast_forward(r, from, to, 1))
+ return -1; /* the callee should have complained already */
- strbuf_addf(&sb, _("%s: fast-forward"), action_name(opts));
+ strbuf_addf(&sb, _("%s: fast-forward"), _(action_name(opts)));
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, "HEAD",
- to, unborn ? null_sha1 : from,
+ to, unborn && !is_rebase_i(opts) ?
+ &null_oid : from,
0, sb.buf, &err) ||
ref_transaction_commit(transaction, &err)) {
ref_transaction_free(transaction);
strbuf_release(&sb);
strbuf_release(&err);
ref_transaction_free(transaction);
+ update_abort_safety_file();
return 0;
}
-void append_conflicts_hint(struct strbuf *msgbuf)
+enum commit_msg_cleanup_mode get_cleanup_mode(const char *cleanup_arg,
+ int use_editor)
+{
+ if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
+ return use_editor ? COMMIT_MSG_CLEANUP_ALL :
+ COMMIT_MSG_CLEANUP_SPACE;
+ else if (!strcmp(cleanup_arg, "verbatim"))
+ return COMMIT_MSG_CLEANUP_NONE;
+ else if (!strcmp(cleanup_arg, "whitespace"))
+ return COMMIT_MSG_CLEANUP_SPACE;
+ else if (!strcmp(cleanup_arg, "strip"))
+ return COMMIT_MSG_CLEANUP_ALL;
+ else if (!strcmp(cleanup_arg, "scissors"))
+ return use_editor ? COMMIT_MSG_CLEANUP_SCISSORS :
+ COMMIT_MSG_CLEANUP_SPACE;
+ else
+ die(_("Invalid cleanup mode %s"), cleanup_arg);
+}
+
+/*
+ * NB using int rather than enum cleanup_mode to stop clang's
+ * -Wtautological-constant-out-of-range-compare complaining that the comparison
+ * is always true.
+ */
+static const char *describe_cleanup_mode(int cleanup_mode)
+{
+ static const char *modes[] = { "whitespace",
+ "verbatim",
+ "scissors",
+ "strip" };
+
+ if (cleanup_mode < ARRAY_SIZE(modes))
+ return modes[cleanup_mode];
+
+ BUG("invalid cleanup_mode provided (%d)", cleanup_mode);
+}
+
+void append_conflicts_hint(struct index_state *istate,
+ struct strbuf *msgbuf, enum commit_msg_cleanup_mode cleanup_mode)
{
int i;
+ if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS) {
+ strbuf_addch(msgbuf, '\n');
+ wt_status_append_cut_line(msgbuf);
+ strbuf_addch(msgbuf, comment_line_char);
+ }
+
strbuf_addch(msgbuf, '\n');
strbuf_commented_addf(msgbuf, "Conflicts:\n");
- for (i = 0; i < active_nr;) {
- const struct cache_entry *ce = active_cache[i++];
+ for (i = 0; i < istate->cache_nr;) {
+ const struct cache_entry *ce = istate->cache[i++];
if (ce_stage(ce)) {
strbuf_commented_addf(msgbuf, "\t%s\n", ce->name);
- while (i < active_nr && !strcmp(ce->name,
- active_cache[i]->name))
+ while (i < istate->cache_nr &&
+ !strcmp(ce->name, istate->cache[i]->name))
i++;
}
}
}
-static int do_recursive_merge(struct commit *base, struct commit *next,
+static int do_recursive_merge(struct repository *r,
+ struct commit *base, struct commit *next,
const char *base_label, const char *next_label,
- unsigned char *head, struct strbuf *msgbuf,
+ struct object_id *head, struct strbuf *msgbuf,
struct replay_opts *opts)
{
struct merge_options o;
- struct tree *result, *next_tree, *base_tree, *head_tree;
+ struct tree *next_tree, *base_tree, *head_tree;
int clean;
- const char **xopt;
- static struct lock_file index_lock;
+ int i;
+ struct lock_file index_lock = LOCK_INIT;
- hold_locked_index(&index_lock, 1);
+ if (repo_hold_locked_index(r, &index_lock, LOCK_REPORT_ON_ERROR) < 0)
+ return -1;
- read_cache();
+ repo_read_index(r);
- init_merge_options(&o);
+ init_merge_options(&o, r);
o.ancestor = base ? base_label : "(empty tree)";
o.branch1 = "HEAD";
o.branch2 = next ? next_label : "(empty tree)";
+ if (is_rebase_i(opts))
+ o.buffer_output = 2;
+ o.show_rename_progress = 1;
head_tree = parse_tree_indirect(head);
- next_tree = next ? next->tree : empty_tree();
- base_tree = base ? base->tree : empty_tree();
+ next_tree = next ? get_commit_tree(next) : empty_tree(r);
+ base_tree = base ? get_commit_tree(base) : empty_tree(r);
- for (xopt = opts->xopts; xopt != opts->xopts + opts->xopts_nr; xopt++)
- parse_merge_opt(&o, *xopt);
+ for (i = 0; i < opts->xopts_nr; i++)
+ parse_merge_opt(&o, opts->xopts[i]);
clean = merge_trees(&o,
head_tree,
- next_tree, base_tree, &result);
+ next_tree, base_tree);
+ if (is_rebase_i(opts) && clean <= 0)
+ fputs(o.obuf.buf, stdout);
strbuf_release(&o.obuf);
- if (clean < 0)
+ if (clean < 0) {
+ rollback_lock_file(&index_lock);
return clean;
+ }
- if (active_cache_changed &&
- write_locked_index(&the_index, &index_lock, COMMIT_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 (opts->signoff)
- append_signoff(msgbuf, 0, 0);
+ if (write_locked_index(r->index, &index_lock,
+ COMMIT_LOCK | SKIP_IF_UNCHANGED))
+ /*
+ * TRANSLATORS: %s will be "revert", "cherry-pick" or
+ * "rebase -i".
+ */
+ return error(_("%s: Unable to write new index file"),
+ _(action_name(opts)));
if (!clean)
- append_conflicts_hint(msgbuf);
+ append_conflicts_hint(r->index, msgbuf,
+ opts->default_msg_cleanup);
return !clean;
}
-static int is_index_unchanged(void)
+static struct object_id *get_cache_tree_oid(struct index_state *istate)
+{
+ if (!istate->cache_tree)
+ istate->cache_tree = cache_tree();
+
+ if (!cache_tree_fully_valid(istate->cache_tree))
+ if (cache_tree_update(istate, 0)) {
+ error(_("unable to update cache tree"));
+ return NULL;
+ }
+
+ return &istate->cache_tree->oid;
+}
+
+static int is_index_unchanged(struct repository *r)
{
- unsigned char head_sha1[20];
+ struct object_id head_oid, *cache_tree_oid;
struct commit *head_commit;
+ struct index_state *istate = r->index;
- if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL))
- return error(_("Could not resolve HEAD commit\n"));
+ if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, &head_oid, NULL))
+ return error(_("could not resolve HEAD commit"));
- head_commit = lookup_commit(head_sha1);
+ head_commit = lookup_commit(r, &head_oid);
/*
* If head_commit is NULL, check_commit, called from
if (parse_commit(head_commit))
return -1;
- if (!active_cache_tree)
- active_cache_tree = cache_tree();
+ if (!(cache_tree_oid = get_cache_tree_oid(istate)))
+ return -1;
+
+ return oideq(cache_tree_oid, get_commit_tree_oid(head_commit));
+}
+
+static int write_author_script(const char *message)
+{
+ struct strbuf buf = STRBUF_INIT;
+ const char *eol;
+ int res;
- if (!cache_tree_fully_valid(active_cache_tree))
- if (cache_tree_update(&the_index, 0))
- return error(_("Unable to update cache tree\n"));
+ for (;;)
+ if (!*message || starts_with(message, "\n")) {
+missing_author:
+ /* Missing 'author' line? */
+ unlink(rebase_path_author_script());
+ return 0;
+ } else if (skip_prefix(message, "author ", &message))
+ break;
+ else if ((eol = strchr(message, '\n')))
+ message = eol + 1;
+ else
+ goto missing_author;
- return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash);
+ strbuf_addstr(&buf, "GIT_AUTHOR_NAME='");
+ while (*message && *message != '\n' && *message != '\r')
+ if (skip_prefix(message, " <", &message))
+ break;
+ else if (*message != '\'')
+ strbuf_addch(&buf, *(message++));
+ else
+ strbuf_addf(&buf, "'\\%c'", *(message++));
+ strbuf_addstr(&buf, "'\nGIT_AUTHOR_EMAIL='");
+ while (*message && *message != '\n' && *message != '\r')
+ if (skip_prefix(message, "> ", &message))
+ break;
+ else if (*message != '\'')
+ strbuf_addch(&buf, *(message++));
+ else
+ strbuf_addf(&buf, "'\\%c'", *(message++));
+ strbuf_addstr(&buf, "'\nGIT_AUTHOR_DATE='@");
+ while (*message && *message != '\n' && *message != '\r')
+ if (*message != '\'')
+ strbuf_addch(&buf, *(message++));
+ else
+ strbuf_addf(&buf, "'\\%c'", *(message++));
+ strbuf_addch(&buf, '\'');
+ res = write_message(buf.buf, buf.len, rebase_path_author_script(), 1);
+ strbuf_release(&buf);
+ return res;
}
-/*
- * 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.
+/**
+ * Take a series of KEY='VALUE' lines where VALUE part is
+ * sq-quoted, and append <KEY, VALUE> at the end of the string list
*/
-static int run_git_commit(const char *defmsg, struct replay_opts *opts,
- int allow_empty)
+static int parse_key_value_squoted(char *buf, struct string_list *list)
{
- struct argv_array array;
- int rc;
- const char *value;
+ while (*buf) {
+ struct string_list_item *item;
+ char *np;
+ char *cp = strchr(buf, '=');
+ if (!cp) {
+ np = strchrnul(buf, '\n');
+ return error(_("no key present in '%.*s'"),
+ (int) (np - buf), buf);
+ }
+ np = strchrnul(cp, '\n');
+ *cp++ = '\0';
+ item = string_list_append(list, buf);
+
+ buf = np + (*np == '\n');
+ *np = '\0';
+ cp = sq_dequote(cp);
+ if (!cp)
+ return error(_("unable to dequote value of '%s'"),
+ item->string);
+ item->util = xstrdup(cp);
+ }
+ return 0;
+}
+
+/**
+ * Reads and parses the state directory's "author-script" file, and sets name,
+ * email and date accordingly.
+ * Returns 0 on success, -1 if the file could not be parsed.
+ *
+ * The author script is of the format:
+ *
+ * GIT_AUTHOR_NAME='$author_name'
+ * GIT_AUTHOR_EMAIL='$author_email'
+ * GIT_AUTHOR_DATE='$author_date'
+ *
+ * where $author_name, $author_email and $author_date are quoted. We are strict
+ * with our parsing, as the file was meant to be eval'd in the now-removed
+ * git-am.sh/git-rebase--interactive.sh scripts, and thus if the file differs
+ * from what this function expects, it is better to bail out than to do
+ * something that the user does not expect.
+ */
+int read_author_script(const char *path, char **name, char **email, char **date,
+ int allow_missing)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct string_list kv = STRING_LIST_INIT_DUP;
+ int retval = -1; /* assume failure */
+ int i, name_i = -2, email_i = -2, date_i = -2, err = 0;
- argv_array_init(&array);
- argv_array_push(&array, "commit");
- argv_array_push(&array, "-n");
+ if (strbuf_read_file(&buf, path, 256) <= 0) {
+ strbuf_release(&buf);
+ if (errno == ENOENT && allow_missing)
+ return 0;
+ else
+ return error_errno(_("could not open '%s' for reading"),
+ path);
+ }
- if (opts->gpg_sign)
- argv_array_pushf(&array, "-S%s", opts->gpg_sign);
- if (opts->signoff)
- argv_array_push(&array, "-s");
- if (!opts->edit) {
- argv_array_push(&array, "-F");
- argv_array_push(&array, defmsg);
- if (!opts->signoff &&
- !opts->record_origin &&
- git_config_get_value("commit.cleanup", &value))
- argv_array_push(&array, "--cleanup=verbatim");
+ if (parse_key_value_squoted(buf.buf, &kv))
+ goto finish;
+
+ for (i = 0; i < kv.nr; i++) {
+ if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) {
+ if (name_i != -2)
+ name_i = error(_("'GIT_AUTHOR_NAME' already given"));
+ else
+ name_i = i;
+ } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) {
+ if (email_i != -2)
+ email_i = error(_("'GIT_AUTHOR_EMAIL' already given"));
+ else
+ email_i = i;
+ } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) {
+ if (date_i != -2)
+ date_i = error(_("'GIT_AUTHOR_DATE' already given"));
+ else
+ date_i = i;
+ } else {
+ err = error(_("unknown variable '%s'"),
+ kv.items[i].string);
+ }
}
+ if (name_i == -2)
+ error(_("missing 'GIT_AUTHOR_NAME'"));
+ if (email_i == -2)
+ error(_("missing 'GIT_AUTHOR_EMAIL'"));
+ if (date_i == -2)
+ error(_("missing 'GIT_AUTHOR_DATE'"));
+ if (date_i < 0 || email_i < 0 || date_i < 0 || err)
+ goto finish;
+ *name = kv.items[name_i].util;
+ *email = kv.items[email_i].util;
+ *date = kv.items[date_i].util;
+ retval = 0;
+finish:
+ string_list_clear(&kv, !!retval);
+ strbuf_release(&buf);
+ return retval;
+}
- if (allow_empty)
- argv_array_push(&array, "--allow-empty");
+/*
+ * Read a GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL AND GIT_AUTHOR_DATE from a
+ * file with shell quoting into struct argv_array. Returns -1 on
+ * error, 0 otherwise.
+ */
+static int read_env_script(struct argv_array *env)
+{
+ char *name, *email, *date;
- if (opts->allow_empty_message)
- argv_array_push(&array, "--allow-empty-message");
+ if (read_author_script(rebase_path_author_script(),
+ &name, &email, &date, 0))
+ return -1;
- rc = run_command_v_opt(array.argv, RUN_GIT_CMD);
- argv_array_clear(&array);
- return rc;
+ argv_array_pushf(env, "GIT_AUTHOR_NAME=%s", name);
+ argv_array_pushf(env, "GIT_AUTHOR_EMAIL=%s", email);
+ argv_array_pushf(env, "GIT_AUTHOR_DATE=%s", date);
+ free(name);
+ free(email);
+ free(date);
+
+ return 0;
}
-static int is_original_commit_empty(struct commit *commit)
+static char *get_author(const char *message)
{
- const unsigned char *ptree_sha1;
+ size_t len;
+ const char *a;
- if (parse_commit(commit))
- return error(_("Could not parse commit %s\n"),
- oid_to_hex(&commit->object.oid));
- if (commit->parents) {
- struct commit *parent = commit->parents->item;
- if (parse_commit(parent))
- return error(_("Could not parse parent commit %s\n"),
- oid_to_hex(&parent->object.oid));
- ptree_sha1 = parent->tree->object.oid.hash;
- } else {
- ptree_sha1 = EMPTY_TREE_SHA1_BIN; /* commit is root */
- }
+ a = find_commit_header(message, "author", &len);
+ if (a)
+ return xmemdupz(a, len);
+
+ return NULL;
+}
+
+static const char staged_changes_advice[] =
+N_("you have staged changes in your working tree\n"
+"If these changes are meant to be squashed into the previous commit, run:\n"
+"\n"
+" git commit --amend %s\n"
+"\n"
+"If they are meant to go into a new commit, run:\n"
+"\n"
+" git commit %s\n"
+"\n"
+"In both cases, once you're done, continue with:\n"
+"\n"
+" git rebase --continue\n");
+
+#define ALLOW_EMPTY (1<<0)
+#define EDIT_MSG (1<<1)
+#define AMEND_MSG (1<<2)
+#define CLEANUP_MSG (1<<3)
+#define VERIFY_MSG (1<<4)
+#define CREATE_ROOT_COMMIT (1<<5)
+
+static int run_command_silent_on_success(struct child_process *cmd)
+{
+ struct strbuf buf = STRBUF_INIT;
+ int rc;
- return !hashcmp(ptree_sha1, commit->tree->object.oid.hash);
+ cmd->stdout_to_stderr = 1;
+ rc = pipe_command(cmd,
+ NULL, 0,
+ NULL, 0,
+ &buf, 0);
+
+ if (rc)
+ fputs(buf.buf, stderr);
+ strbuf_release(&buf);
+ return rc;
}
/*
- * Do we run "git commit" with "--allow-empty"?
+ * 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.
+ *
+ * An exception is when run_git_commit() is called during an
+ * interactive rebase: in that case, we will want to retain the
+ * author metadata.
*/
-static int allow_empty(struct replay_opts *opts, struct commit *commit)
+static int run_git_commit(struct repository *r,
+ const char *defmsg,
+ struct replay_opts *opts,
+ unsigned int flags)
{
- int index_unchanged, empty_commit;
+ struct child_process cmd = CHILD_PROCESS_INIT;
- /*
- * Three cases:
- *
- * (1) we do not allow empty at all and error out.
- *
- * (2) we allow ones that were initially empty, but
- * forbid the ones that become empty;
- *
- * (3) we allow both.
- */
- if (!opts->allow_empty)
- return 0; /* let "git commit" barf as necessary */
+ cmd.git_cmd = 1;
- index_unchanged = is_index_unchanged();
- if (index_unchanged < 0)
- return index_unchanged;
- if (!index_unchanged)
- return 0; /* we do not have to say --allow-empty */
+ if (is_rebase_i(opts) && read_env_script(&cmd.env_array)) {
+ const char *gpg_opt = gpg_sign_opt_quoted(opts);
- if (opts->keep_redundant_commits)
- return 1;
+ return error(_(staged_changes_advice),
+ gpg_opt, gpg_opt);
+ }
- empty_commit = is_original_commit_empty(commit);
- if (empty_commit < 0)
- return empty_commit;
- if (!empty_commit)
- return 0;
+ argv_array_push(&cmd.args, "commit");
+
+ if (!(flags & VERIFY_MSG))
+ argv_array_push(&cmd.args, "-n");
+ if ((flags & AMEND_MSG))
+ argv_array_push(&cmd.args, "--amend");
+ if (opts->gpg_sign)
+ argv_array_pushf(&cmd.args, "-S%s", opts->gpg_sign);
+ if (defmsg)
+ argv_array_pushl(&cmd.args, "-F", defmsg, NULL);
+ else if (!(flags & EDIT_MSG))
+ argv_array_pushl(&cmd.args, "-C", "HEAD", NULL);
+ if ((flags & CLEANUP_MSG))
+ argv_array_push(&cmd.args, "--cleanup=strip");
+ if ((flags & EDIT_MSG))
+ argv_array_push(&cmd.args, "-e");
+ else if (!(flags & CLEANUP_MSG) &&
+ !opts->signoff && !opts->record_origin &&
+ !opts->explicit_cleanup)
+ argv_array_push(&cmd.args, "--cleanup=verbatim");
+
+ if ((flags & ALLOW_EMPTY))
+ argv_array_push(&cmd.args, "--allow-empty");
+
+ if (!(flags & EDIT_MSG))
+ argv_array_push(&cmd.args, "--allow-empty-message");
+
+ if (is_rebase_i(opts) && !(flags & EDIT_MSG))
+ return run_command_silent_on_success(&cmd);
else
- return 1;
+ return run_command(&cmd);
}
-static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
+static int rest_is_empty(const struct strbuf *sb, int start)
{
- unsigned char head[20];
- struct commit *base, *next, *parent;
- const char *base_label, *next_label;
- struct commit_message msg = { NULL, NULL, NULL, NULL };
- struct strbuf msgbuf = STRBUF_INIT;
- int res, unborn = 0, allow;
+ int i, eol;
+ const char *nl;
+
+ /* Check if the rest is just whitespace and Signed-off-by's. */
+ for (i = start; i < sb->len; i++) {
+ nl = memchr(sb->buf + i, '\n', sb->len - i);
+ if (nl)
+ eol = nl - sb->buf;
+ else
+ eol = sb->len;
- 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 {
- unborn = get_sha1("HEAD", head);
- if (unborn)
- hashcpy(head, EMPTY_TREE_SHA1_BIN);
- if (index_differs_from(unborn ? EMPTY_TREE_SHA1_HEX : "HEAD", 0))
- return error_dirty_index(opts);
+ if (strlen(sign_off_header) <= eol - i &&
+ starts_with(sb->buf + i, sign_off_header)) {
+ i = eol;
+ continue;
+ }
+ while (i < eol)
+ if (!isspace(sb->buf[i++]))
+ return 0;
}
- 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;
+ return 1;
+}
- if (!opts->mainline)
- return error(_("Commit %s is a merge but no -m option was given."),
- oid_to_hex(&commit->object.oid));
+void cleanup_message(struct strbuf *msgbuf,
+ enum commit_msg_cleanup_mode cleanup_mode, int verbose)
+{
+ if (verbose || /* Truncate the message just before the diff, if any. */
+ cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS)
+ strbuf_setlen(msgbuf, wt_status_locate_end(msgbuf->buf, msgbuf->len));
+ if (cleanup_mode != COMMIT_MSG_CLEANUP_NONE)
+ strbuf_stripspace(msgbuf, cleanup_mode == COMMIT_MSG_CLEANUP_ALL);
+}
- 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"),
- oid_to_hex(&commit->object.oid), opts->mainline);
- parent = p->item;
- } else if (0 < opts->mainline)
- return error(_("Mainline was specified but commit %s is not a merge."),
- oid_to_hex(&commit->object.oid));
- else
- parent = commit->parents->item;
+/*
+ * Find out if the message in the strbuf contains only whitespace and
+ * Signed-off-by lines.
+ */
+int message_is_empty(const struct strbuf *sb,
+ enum commit_msg_cleanup_mode cleanup_mode)
+{
+ if (cleanup_mode == COMMIT_MSG_CLEANUP_NONE && sb->len)
+ return 0;
+ return rest_is_empty(sb, 0);
+}
- if (opts->allow_ff &&
- ((parent && !hashcmp(parent->object.oid.hash, head)) ||
- (!parent && unborn)))
- return fast_forward_to(commit->object.oid.hash, head, unborn, opts);
+/*
+ * See if the user edited the message in the editor or left what
+ * was in the template intact
+ */
+int template_untouched(const struct strbuf *sb, const char *template_file,
+ enum commit_msg_cleanup_mode cleanup_mode)
+{
+ struct strbuf tmpl = STRBUF_INIT;
+ const char *start;
- 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), oid_to_hex(&parent->object.oid));
+ if (cleanup_mode == COMMIT_MSG_CLEANUP_NONE && sb->len)
+ return 0;
- if (get_message(commit, &msg) != 0)
- return error(_("Cannot get commit message for %s"),
- oid_to_hex(&commit->object.oid));
+ if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0)
+ return 0;
- /*
- * "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.
- */
+ strbuf_stripspace(&tmpl, cleanup_mode == COMMIT_MSG_CLEANUP_ALL);
+ if (!skip_prefix(sb->buf, tmpl.buf, &start))
+ start = sb->buf;
+ strbuf_release(&tmpl);
+ return rest_is_empty(sb, start - sb->buf);
+}
- if (opts->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, oid_to_hex(&commit->object.oid));
+int update_head_with_reflog(const struct commit *old_head,
+ const struct object_id *new_head,
+ const char *action, const struct strbuf *msg,
+ struct strbuf *err)
+{
+ struct ref_transaction *transaction;
+ struct strbuf sb = STRBUF_INIT;
+ const char *nl;
+ int ret = 0;
- if (commit->parents && commit->parents->next) {
- strbuf_addstr(&msgbuf, ", reversing\nchanges made to ");
- strbuf_addstr(&msgbuf, oid_to_hex(&parent->object.oid));
- }
- strbuf_addstr(&msgbuf, ".\n");
+ if (action) {
+ strbuf_addstr(&sb, action);
+ strbuf_addstr(&sb, ": ");
+ }
+
+ nl = strchr(msg->buf, '\n');
+ if (nl) {
+ strbuf_add(&sb, msg->buf, nl + 1 - msg->buf);
} else {
- const char *p;
+ strbuf_addbuf(&sb, msg);
+ strbuf_addch(&sb, '\n');
+ }
- base = parent;
- base_label = msg.parent_label;
- next = commit;
- next_label = msg.label;
+ transaction = ref_transaction_begin(err);
+ if (!transaction ||
+ ref_transaction_update(transaction, "HEAD", new_head,
+ old_head ? &old_head->object.oid : &null_oid,
+ 0, sb.buf, err) ||
+ ref_transaction_commit(transaction, err)) {
+ ret = -1;
+ }
+ ref_transaction_free(transaction);
+ strbuf_release(&sb);
- /*
- * 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)
- strbuf_addstr(&msgbuf, skip_blank_lines(p + 2));
+ return ret;
+}
- if (opts->record_origin) {
- if (!has_conforming_footer(&msgbuf, NULL, 0))
- strbuf_addch(&msgbuf, '\n');
- strbuf_addstr(&msgbuf, cherry_picked_prefix);
- strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid));
- strbuf_addstr(&msgbuf, ")\n");
- }
- }
+static int run_rewrite_hook(const struct object_id *oldoid,
+ const struct object_id *newoid)
+{
+ struct child_process proc = CHILD_PROCESS_INIT;
+ const char *argv[3];
+ int code;
+ struct strbuf sb = STRBUF_INIT;
- if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REPLAY_REVERT) {
- res = do_recursive_merge(base, next, base_label, next_label,
- head, &msgbuf, opts);
- if (res < 0)
- return res;
- write_message(&msgbuf, git_path_merge_msg());
- } else {
- struct commit_list *common = NULL;
- struct commit_list *remotes = NULL;
+ argv[0] = find_hook("post-rewrite");
+ if (!argv[0])
+ return 0;
- write_message(&msgbuf, git_path_merge_msg());
+ argv[1] = "amend";
+ argv[2] = NULL;
+
+ proc.argv = argv;
+ proc.in = -1;
+ proc.stdout_to_stderr = 1;
+ proc.trace2_hook_name = "post-rewrite";
+
+ code = start_command(&proc);
+ if (code)
+ return code;
+ strbuf_addf(&sb, "%s %s\n", oid_to_hex(oldoid), oid_to_hex(newoid));
+ sigchain_push(SIGPIPE, SIG_IGN);
+ write_in_full(proc.in, sb.buf, sb.len);
+ close(proc.in);
+ strbuf_release(&sb);
+ sigchain_pop(SIGPIPE);
+ return finish_command(&proc);
+}
- 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);
+void commit_post_rewrite(struct repository *r,
+ const struct commit *old_head,
+ const struct object_id *new_head)
+{
+ struct notes_rewrite_cfg *cfg;
+
+ cfg = init_copy_notes_for_rewrite("amend");
+ if (cfg) {
+ /* we are amending, so old_head is not NULL */
+ copy_note_for_rewrite(cfg, &old_head->object.oid, new_head);
+ finish_copy_notes_for_rewrite(r, cfg, "Notes added by 'git commit --amend'");
}
+ run_rewrite_hook(&old_head->object.oid, new_head);
+}
- /*
- * 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))
- update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL,
- REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
- if (opts->action == REPLAY_REVERT && ((opts->no_commit && res == 0) || res == 1))
- update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL,
- REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
+static int run_prepare_commit_msg_hook(struct repository *r,
+ struct strbuf *msg,
+ const char *commit)
+{
+ int ret = 0;
+ const char *name, *arg1 = NULL, *arg2 = NULL;
- if (res) {
- error(opts->action == REPLAY_REVERT
- ? _("could not revert %s... %s")
- : _("could not apply %s... %s"),
- find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV),
- msg.subject);
- print_advice(res == 1, opts);
- rerere(opts->allow_rerere_auto);
- goto leave;
- }
+ name = git_path_commit_editmsg();
+ if (write_message(msg->buf, msg->len, name, 0))
+ return -1;
- allow = allow_empty(opts, commit);
- if (allow < 0) {
- res = allow;
- goto leave;
+ if (commit) {
+ arg1 = "commit";
+ arg2 = commit;
+ } else {
+ arg1 = "message";
}
- if (!opts->no_commit)
- res = run_git_commit(git_path_merge_msg(), opts, allow);
-
-leave:
- free_message(commit, &msg);
+ if (run_commit_hook(0, r->index_file, "prepare-commit-msg", name,
+ arg1, arg2, NULL))
+ ret = error(_("'prepare-commit-msg' hook failed"));
- return res;
+ return ret;
}
-static void prepare_revs(struct replay_opts *opts)
+static const char implicit_ident_advice_noconfig[] =
+N_("Your name and email address were configured automatically based\n"
+"on your username and hostname. Please check that they are accurate.\n"
+"You can suppress this message by setting them explicitly. Run the\n"
+"following command and follow the instructions in your editor to edit\n"
+"your configuration file:\n"
+"\n"
+" git config --global --edit\n"
+"\n"
+"After doing this, you may fix the identity used for this commit with:\n"
+"\n"
+" git commit --amend --reset-author\n");
+
+static const char implicit_ident_advice_config[] =
+N_("Your name and email address were configured automatically based\n"
+"on your username and hostname. Please check that they are accurate.\n"
+"You can suppress this message by setting them explicitly:\n"
+"\n"
+" git config --global user.name \"Your Name\"\n"
+" git config --global user.email you@example.com\n"
+"\n"
+"After doing this, you may fix the identity used for this commit with:\n"
+"\n"
+" git commit --amend --reset-author\n");
+
+static const char *implicit_ident_advice(void)
{
- /*
- * picking (but not reverting) ranges (but not individual revisions)
- * should be done in reverse
- */
- if (opts->action == REPLAY_PICK && !opts->revs->no_walk)
- opts->revs->reverse ^= 1;
+ char *user_config = expand_user_path("~/.gitconfig", 0);
+ char *xdg_config = xdg_config_home("config");
+ int config_exists = file_exists(user_config) || file_exists(xdg_config);
- if (prepare_revision_walk(opts->revs))
- die(_("revision walk setup failed"));
+ free(user_config);
+ free(xdg_config);
+
+ if (config_exists)
+ return _(implicit_ident_advice_config);
+ else
+ return _(implicit_ident_advice_noconfig);
- if (!opts->revs->commits)
- die(_("empty commit set passed"));
}
-static void read_and_refresh_cache(struct replay_opts *opts)
+void print_commit_summary(struct repository *r,
+ const char *prefix,
+ const struct object_id *oid,
+ unsigned int flags)
{
- 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 && index_fd >= 0) {
- if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK))
- die(_("git %s: failed to refresh the index"), action_name(opts));
+ struct rev_info rev;
+ struct commit *commit;
+ struct strbuf format = STRBUF_INIT;
+ const char *head;
+ struct pretty_print_context pctx = {0};
+ struct strbuf author_ident = STRBUF_INIT;
+ struct strbuf committer_ident = STRBUF_INIT;
+
+ commit = lookup_commit(r, oid);
+ if (!commit)
+ die(_("couldn't look up newly created commit"));
+ if (parse_commit(commit))
+ die(_("could not parse newly created commit"));
+
+ strbuf_addstr(&format, "format:%h] %s");
+
+ format_commit_message(commit, "%an <%ae>", &author_ident, &pctx);
+ format_commit_message(commit, "%cn <%ce>", &committer_ident, &pctx);
+ if (strbuf_cmp(&author_ident, &committer_ident)) {
+ strbuf_addstr(&format, "\n Author: ");
+ strbuf_addbuf_percentquote(&format, &author_ident);
+ }
+ if (flags & SUMMARY_SHOW_AUTHOR_DATE) {
+ struct strbuf date = STRBUF_INIT;
+
+ format_commit_message(commit, "%ad", &date, &pctx);
+ strbuf_addstr(&format, "\n Date: ");
+ strbuf_addbuf_percentquote(&format, &date);
+ strbuf_release(&date);
+ }
+ if (!committer_ident_sufficiently_given()) {
+ strbuf_addstr(&format, "\n Committer: ");
+ strbuf_addbuf_percentquote(&format, &committer_ident);
+ if (advice_implicit_identity) {
+ strbuf_addch(&format, '\n');
+ strbuf_addstr(&format, implicit_ident_advice());
+ }
+ }
+ strbuf_release(&author_ident);
+ strbuf_release(&committer_ident);
+
+ repo_init_revisions(r, &rev, prefix);
+ setup_revisions(0, NULL, &rev, NULL);
+
+ rev.diff = 1;
+ rev.diffopt.output_format =
+ DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
+
+ rev.verbose_header = 1;
+ rev.show_root_diff = 1;
+ get_commit_format(format.buf, &rev);
+ rev.always_show_header = 0;
+ rev.diffopt.detect_rename = DIFF_DETECT_RENAME;
+ rev.diffopt.break_opt = 0;
+ diff_setup_done(&rev.diffopt);
+
+ head = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
+ if (!head)
+ die_errno(_("unable to resolve HEAD after creating commit"));
+ if (!strcmp(head, "HEAD"))
+ head = _("detached HEAD");
+ else
+ skip_prefix(head, "refs/heads/", &head);
+ printf("[%s%s ", head, (flags & SUMMARY_INITIAL_COMMIT) ?
+ _(" (root-commit)") : "");
+
+ if (!log_tree_commit(&rev, commit)) {
+ rev.always_show_header = 1;
+ rev.use_terminator = 1;
+ log_tree_commit(&rev, commit);
}
- rollback_lock_file(&index_lock);
+
+ strbuf_release(&format);
}
-static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
- struct replay_opts *opts)
+static int parse_head(struct repository *r, struct commit **head)
{
- struct commit_list *cur = NULL;
- const char *sha1_abbrev = NULL;
- const char *action_str = opts->action == REPLAY_REVERT ? "revert" : "pick";
- const char *subject;
- int subject_len;
+ struct commit *current_head;
+ struct object_id oid;
- for (cur = todo_list; cur; cur = cur->next) {
- const char *commit_buffer = get_commit_buffer(cur->item, NULL);
- sha1_abbrev = find_unique_abbrev(cur->item->object.oid.hash, DEFAULT_ABBREV);
- subject_len = find_commit_subject(commit_buffer, &subject);
- strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev,
- subject_len, subject);
- unuse_commit_buffer(cur->item, commit_buffer);
+ if (get_oid("HEAD", &oid)) {
+ current_head = NULL;
+ } else {
+ current_head = lookup_commit_reference(r, &oid);
+ if (!current_head)
+ return error(_("could not parse HEAD"));
+ if (!oideq(&oid, ¤t_head->object.oid)) {
+ warning(_("HEAD %s is not a commit!"),
+ oid_to_hex(&oid));
+ }
+ if (parse_commit(current_head))
+ return error(_("could not parse HEAD commit"));
}
+ *head = current_head;
+
return 0;
}
-static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts)
+/*
+ * Try to commit without forking 'git commit'. In some cases we need
+ * to run 'git commit' to display an error message
+ *
+ * Returns:
+ * -1 - error unable to commit
+ * 0 - success
+ * 1 - run 'git commit'
+ */
+static int try_to_commit(struct repository *r,
+ struct strbuf *msg, const char *author,
+ struct replay_opts *opts, unsigned int flags,
+ struct object_id *oid)
{
- unsigned char commit_sha1[20];
- enum replay_action action;
- char *end_of_object_name;
- int saved, status, padding;
-
- if (starts_with(bol, "pick")) {
- action = REPLAY_PICK;
- bol += strlen("pick");
- } else if (starts_with(bol, "revert")) {
- action = REPLAY_REVERT;
- bol += strlen("revert");
- } else
- return NULL;
+ struct object_id tree;
+ struct commit *current_head = NULL;
+ struct commit_list *parents = NULL;
+ struct commit_extra_header *extra = NULL;
+ struct strbuf err = STRBUF_INIT;
+ struct strbuf commit_msg = STRBUF_INIT;
+ char *amend_author = NULL;
+ const char *hook_commit = NULL;
+ enum commit_msg_cleanup_mode cleanup;
+ int res = 0;
- /* Eat up extra spaces/ tabs before object name */
- padding = strspn(bol, " \t");
- if (!padding)
- return NULL;
- bol += padding;
+ if (parse_head(r, ¤t_head))
+ return -1;
- end_of_object_name = bol + strcspn(bol, " \t\n");
- saved = *end_of_object_name;
- *end_of_object_name = '\0';
- status = get_sha1(bol, commit_sha1);
- *end_of_object_name = saved;
+ if (flags & AMEND_MSG) {
+ const char *exclude_gpgsig[] = { "gpgsig", NULL };
+ const char *out_enc = get_commit_output_encoding();
+ const char *message = logmsg_reencode(current_head, NULL,
+ out_enc);
- /*
- * Verify that the action matches up with the one in
- * opts; we don't support arbitrary instructions
- */
- if (action != opts->action) {
- if (action == REPLAY_REVERT)
- error((opts->action == REPLAY_REVERT)
- ? _("Cannot revert during another revert.")
- : _("Cannot revert during a cherry-pick."));
- else
- error((opts->action == REPLAY_REVERT)
- ? _("Cannot cherry-pick during a revert.")
- : _("Cannot cherry-pick during another cherry-pick."));
- return NULL;
+ if (!msg) {
+ const char *orig_message = NULL;
+
+ find_commit_subject(message, &orig_message);
+ msg = &commit_msg;
+ strbuf_addstr(msg, orig_message);
+ hook_commit = "HEAD";
+ }
+ author = amend_author = get_author(message);
+ unuse_commit_buffer(current_head, message);
+ if (!author) {
+ res = error(_("unable to parse commit author"));
+ goto out;
+ }
+ parents = copy_commit_list(current_head->parents);
+ extra = read_commit_extra_headers(current_head, exclude_gpgsig);
+ } else if (current_head &&
+ (!(flags & CREATE_ROOT_COMMIT) || (flags & AMEND_MSG))) {
+ commit_list_insert(current_head, &parents);
}
- if (status < 0)
- return NULL;
+ if (write_index_as_tree(&tree, r->index, r->index_file, 0, NULL)) {
+ res = error(_("git write-tree failed to write a tree"));
+ goto out;
+ }
+
+ if (!(flags & ALLOW_EMPTY)) {
+ struct commit *first_parent = current_head;
+
+ if (flags & AMEND_MSG) {
+ if (current_head->parents) {
+ first_parent = current_head->parents->item;
+ if (repo_parse_commit(r, first_parent)) {
+ res = error(_("could not parse HEAD commit"));
+ goto out;
+ }
+ } else {
+ first_parent = NULL;
+ }
+ }
+ if (oideq(first_parent
+ ? get_commit_tree_oid(first_parent)
+ : the_hash_algo->empty_tree,
+ &tree)) {
+ res = 1; /* run 'git commit' to display error message */
+ goto out;
+ }
+ }
+
+ if (find_hook("prepare-commit-msg")) {
+ res = run_prepare_commit_msg_hook(r, msg, hook_commit);
+ if (res)
+ goto out;
+ if (strbuf_read_file(&commit_msg, git_path_commit_editmsg(),
+ 2048) < 0) {
+ res = error_errno(_("unable to read commit message "
+ "from '%s'"),
+ git_path_commit_editmsg());
+ goto out;
+ }
+ msg = &commit_msg;
+ }
+
+ if (flags & CLEANUP_MSG)
+ cleanup = COMMIT_MSG_CLEANUP_ALL;
+ else if ((opts->signoff || opts->record_origin) &&
+ !opts->explicit_cleanup)
+ cleanup = COMMIT_MSG_CLEANUP_SPACE;
+ else
+ cleanup = opts->default_msg_cleanup;
- return lookup_commit_reference(commit_sha1);
+ if (cleanup != COMMIT_MSG_CLEANUP_NONE)
+ strbuf_stripspace(msg, cleanup == COMMIT_MSG_CLEANUP_ALL);
+ if ((flags & EDIT_MSG) && message_is_empty(msg, cleanup)) {
+ res = 1; /* run 'git commit' to display error message */
+ goto out;
+ }
+
+ reset_ident_date();
+
+ if (commit_tree_extended(msg->buf, msg->len, &tree, parents,
+ oid, author, opts->gpg_sign, extra)) {
+ res = error(_("failed to write commit object"));
+ goto out;
+ }
+
+ if (update_head_with_reflog(current_head, oid,
+ getenv("GIT_REFLOG_ACTION"), msg, &err)) {
+ res = error("%s", err.buf);
+ goto out;
+ }
+
+ run_commit_hook(0, r->index_file, "post-commit", NULL);
+ if (flags & AMEND_MSG)
+ commit_post_rewrite(r, current_head, oid);
+
+out:
+ free_commit_extra_headers(extra);
+ strbuf_release(&err);
+ strbuf_release(&commit_msg);
+ free(amend_author);
+
+ return res;
}
-static int parse_insn_buffer(char *buf, struct commit_list **todo_list,
- struct replay_opts *opts)
+static int do_commit(struct repository *r,
+ const char *msg_file, const char *author,
+ struct replay_opts *opts, unsigned int flags)
{
- struct commit_list **next = todo_list;
- struct commit *commit;
- char *p = buf;
- int i;
+ int res = 1;
- 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);
- p = *eol ? eol + 1 : eol;
+ if (!(flags & EDIT_MSG) && !(flags & VERIFY_MSG)) {
+ struct object_id oid;
+ struct strbuf sb = STRBUF_INIT;
+
+ if (msg_file && strbuf_read_file(&sb, msg_file, 2048) < 0)
+ return error_errno(_("unable to read commit message "
+ "from '%s'"),
+ msg_file);
+
+ res = try_to_commit(r, msg_file ? &sb : NULL,
+ author, opts, flags, &oid);
+ strbuf_release(&sb);
+ if (!res) {
+ unlink(git_path_cherry_pick_head(r));
+ unlink(git_path_merge_msg(r));
+ if (!is_rebase_i(opts))
+ print_commit_summary(r, NULL, &oid,
+ SUMMARY_SHOW_AUTHOR_DATE);
+ return res;
+ }
}
- if (!*todo_list)
- return error(_("No commits parsed."));
- return 0;
+ if (res == 1)
+ return run_git_commit(r, msg_file, opts, flags);
+
+ return res;
}
-static void read_populate_todo(struct commit_list **todo_list,
- struct replay_opts *opts)
+static int is_original_commit_empty(struct commit *commit)
{
- struct strbuf buf = STRBUF_INIT;
- int fd, res;
+ const struct object_id *ptree_oid;
- fd = open(git_path_todo_file(), O_RDONLY);
- if (fd < 0)
- die_errno(_("Could not open %s"), git_path_todo_file());
- if (strbuf_read(&buf, fd, 0) < 0) {
- close(fd);
- strbuf_release(&buf);
- die(_("Could not read %s."), git_path_todo_file());
+ if (parse_commit(commit))
+ return error(_("could not parse commit %s"),
+ oid_to_hex(&commit->object.oid));
+ if (commit->parents) {
+ struct commit *parent = commit->parents->item;
+ if (parse_commit(parent))
+ return error(_("could not parse parent commit %s"),
+ oid_to_hex(&parent->object.oid));
+ ptree_oid = get_commit_tree_oid(parent);
+ } else {
+ ptree_oid = the_hash_algo->empty_tree; /* commit is root */
}
- close(fd);
- res = parse_insn_buffer(buf.buf, todo_list, opts);
- strbuf_release(&buf);
- if (res)
- die(_("Unusable instruction sheet: %s"), git_path_todo_file());
+ return oideq(ptree_oid, get_commit_tree_oid(commit));
}
-static int populate_opts_cb(const char *key, const char *value, void *data)
+/*
+ * Do we run "git commit" with "--allow-empty"?
+ */
+static int allow_empty(struct repository *r,
+ struct replay_opts *opts,
+ struct commit *commit)
{
- 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.gpg-sign"))
- git_config_string(&opts->gpg_sign, 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);
+ int index_unchanged, empty_commit;
- if (!error_flag)
- return error(_("Invalid value for %s: %s"), key, value);
+ /*
+ * Three cases:
+ *
+ * (1) we do not allow empty at all and error out.
+ *
+ * (2) we allow ones that were initially empty, but
+ * forbid the ones that become empty;
+ *
+ * (3) we allow both.
+ */
+ if (!opts->allow_empty)
+ return 0; /* let "git commit" barf as necessary */
+ index_unchanged = is_index_unchanged(r);
+ if (index_unchanged < 0)
+ return index_unchanged;
+ if (!index_unchanged)
+ return 0; /* we do not have to say --allow-empty */
+
+ if (opts->keep_redundant_commits)
+ return 1;
+
+ empty_commit = is_original_commit_empty(commit);
+ if (empty_commit < 0)
+ return empty_commit;
+ if (!empty_commit)
+ return 0;
+ else
+ return 1;
+}
+
+static struct {
+ char c;
+ const char *str;
+} todo_command_info[] = {
+ { 'p', "pick" },
+ { 0, "revert" },
+ { 'e', "edit" },
+ { 'r', "reword" },
+ { 'f', "fixup" },
+ { 's', "squash" },
+ { 'x', "exec" },
+ { 'b', "break" },
+ { 'l', "label" },
+ { 't', "reset" },
+ { 'm', "merge" },
+ { 0, "noop" },
+ { 'd', "drop" },
+ { 0, NULL }
+};
+
+static const char *command_to_string(const enum todo_command command)
+{
+ if (command < TODO_COMMENT)
+ return todo_command_info[command].str;
+ die(_("unknown command: %d"), command);
+}
+
+static char command_to_char(const enum todo_command command)
+{
+ if (command < TODO_COMMENT && todo_command_info[command].c)
+ return todo_command_info[command].c;
+ return comment_line_char;
+}
+
+static int is_noop(const enum todo_command command)
+{
+ return TODO_NOOP <= command;
+}
+
+static int is_fixup(enum todo_command command)
+{
+ return command == TODO_FIXUP || command == TODO_SQUASH;
+}
+
+/* Does this command create a (non-merge) commit? */
+static int is_pick_or_similar(enum todo_command command)
+{
+ switch (command) {
+ case TODO_PICK:
+ case TODO_REVERT:
+ case TODO_EDIT:
+ case TODO_REWORD:
+ case TODO_FIXUP:
+ case TODO_SQUASH:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int update_squash_messages(struct repository *r,
+ enum todo_command command,
+ struct commit *commit,
+ struct replay_opts *opts)
+{
+ struct strbuf buf = STRBUF_INIT;
+ int res;
+ const char *message, *body;
+ const char *encoding = get_commit_output_encoding();
+
+ if (opts->current_fixup_count > 0) {
+ struct strbuf header = STRBUF_INIT;
+ char *eol;
+
+ if (strbuf_read_file(&buf, rebase_path_squash_msg(), 9) <= 0)
+ return error(_("could not read '%s'"),
+ rebase_path_squash_msg());
+
+ eol = buf.buf[0] != comment_line_char ?
+ buf.buf : strchrnul(buf.buf, '\n');
+
+ strbuf_addf(&header, "%c ", comment_line_char);
+ strbuf_addf(&header, _("This is a combination of %d commits."),
+ opts->current_fixup_count + 2);
+ strbuf_splice(&buf, 0, eol - buf.buf, header.buf, header.len);
+ strbuf_release(&header);
+ } else {
+ struct object_id head;
+ struct commit *head_commit;
+ const char *head_message, *body;
+
+ if (get_oid("HEAD", &head))
+ return error(_("need a HEAD to fixup"));
+ if (!(head_commit = lookup_commit_reference(r, &head)))
+ return error(_("could not read HEAD"));
+ if (!(head_message = logmsg_reencode(head_commit, NULL, encoding)))
+ return error(_("could not read HEAD's commit message"));
+
+ find_commit_subject(head_message, &body);
+ if (write_message(body, strlen(body),
+ rebase_path_fixup_msg(), 0)) {
+ unuse_commit_buffer(head_commit, head_message);
+ return error(_("cannot write '%s'"),
+ rebase_path_fixup_msg());
+ }
+
+ strbuf_addf(&buf, "%c ", comment_line_char);
+ strbuf_addf(&buf, _("This is a combination of %d commits."), 2);
+ strbuf_addf(&buf, "\n%c ", comment_line_char);
+ strbuf_addstr(&buf, _("This is the 1st commit message:"));
+ strbuf_addstr(&buf, "\n\n");
+ strbuf_addstr(&buf, body);
+
+ unuse_commit_buffer(head_commit, head_message);
+ }
+
+ if (!(message = logmsg_reencode(commit, NULL, encoding)))
+ return error(_("could not read commit message of %s"),
+ oid_to_hex(&commit->object.oid));
+ find_commit_subject(message, &body);
+
+ if (command == TODO_SQUASH) {
+ unlink(rebase_path_fixup_msg());
+ strbuf_addf(&buf, "\n%c ", comment_line_char);
+ strbuf_addf(&buf, _("This is the commit message #%d:"),
+ ++opts->current_fixup_count + 1);
+ strbuf_addstr(&buf, "\n\n");
+ strbuf_addstr(&buf, body);
+ } else if (command == TODO_FIXUP) {
+ strbuf_addf(&buf, "\n%c ", comment_line_char);
+ strbuf_addf(&buf, _("The commit message #%d will be skipped:"),
+ ++opts->current_fixup_count + 1);
+ strbuf_addstr(&buf, "\n\n");
+ strbuf_add_commented_lines(&buf, body, strlen(body));
+ } else
+ return error(_("unknown command: %d"), command);
+ unuse_commit_buffer(commit, message);
+
+ res = write_message(buf.buf, buf.len, rebase_path_squash_msg(), 0);
+ strbuf_release(&buf);
+
+ if (!res) {
+ strbuf_addf(&opts->current_fixups, "%s%s %s",
+ opts->current_fixups.len ? "\n" : "",
+ command_to_string(command),
+ oid_to_hex(&commit->object.oid));
+ res = write_message(opts->current_fixups.buf,
+ opts->current_fixups.len,
+ rebase_path_current_fixups(), 0);
+ }
+
+ return res;
+}
+
+static void flush_rewritten_pending(void)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct object_id newoid;
+ FILE *out;
+
+ if (strbuf_read_file(&buf, rebase_path_rewritten_pending(), (GIT_MAX_HEXSZ + 1) * 2) > 0 &&
+ !get_oid("HEAD", &newoid) &&
+ (out = fopen_or_warn(rebase_path_rewritten_list(), "a"))) {
+ char *bol = buf.buf, *eol;
+
+ while (*bol) {
+ eol = strchrnul(bol, '\n');
+ fprintf(out, "%.*s %s\n", (int)(eol - bol),
+ bol, oid_to_hex(&newoid));
+ if (!*eol)
+ break;
+ bol = eol + 1;
+ }
+ fclose(out);
+ unlink(rebase_path_rewritten_pending());
+ }
+ strbuf_release(&buf);
+}
+
+static void record_in_rewritten(struct object_id *oid,
+ enum todo_command next_command)
+{
+ FILE *out = fopen_or_warn(rebase_path_rewritten_pending(), "a");
+
+ if (!out)
+ return;
+
+ fprintf(out, "%s\n", oid_to_hex(oid));
+ fclose(out);
+
+ if (!is_fixup(next_command))
+ flush_rewritten_pending();
+}
+
+static int do_pick_commit(struct repository *r,
+ enum todo_command command,
+ struct commit *commit,
+ struct replay_opts *opts,
+ int final_fixup, int *check_todo)
+{
+ unsigned int flags = opts->edit ? EDIT_MSG : 0;
+ const char *msg_file = opts->edit ? NULL : git_path_merge_msg(r);
+ struct object_id head;
+ struct commit *base, *next, *parent;
+ const char *base_label, *next_label;
+ char *author = NULL;
+ struct commit_message msg = { NULL, NULL, NULL, NULL };
+ struct strbuf msgbuf = STRBUF_INIT;
+ int res, unborn = 0, reword = 0, allow;
+
+ 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_index_as_tree(&head, r->index, r->index_file, 0, NULL))
+ return error(_("your index file is unmerged."));
+ } else {
+ unborn = get_oid("HEAD", &head);
+ /* Do we want to generate a root commit? */
+ if (is_pick_or_similar(command) && opts->have_squash_onto &&
+ oideq(&head, &opts->squash_onto)) {
+ if (is_fixup(command))
+ return error(_("cannot fixup root commit"));
+ flags |= CREATE_ROOT_COMMIT;
+ unborn = 1;
+ } else if (unborn)
+ oidcpy(&head, the_hash_algo->empty_tree);
+ if (index_differs_from(r, unborn ? empty_tree_oid_hex() : "HEAD",
+ NULL, 0))
+ return error_dirty_index(r, opts);
+ }
+ discard_index(r->index);
+
+ 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."),
+ oid_to_hex(&commit->object.oid));
+
+ 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"),
+ oid_to_hex(&commit->object.oid), opts->mainline);
+ parent = p->item;
+ } else if (1 < opts->mainline)
+ /*
+ * Non-first parent explicitly specified as mainline for
+ * non-merge commit
+ */
+ return error(_("commit %s does not have parent %d"),
+ oid_to_hex(&commit->object.oid), opts->mainline);
+ else
+ parent = commit->parents->item;
+
+ if (get_message(commit, &msg) != 0)
+ return error(_("cannot get commit message for %s"),
+ oid_to_hex(&commit->object.oid));
+
+ if (opts->allow_ff && !is_fixup(command) &&
+ ((parent && oideq(&parent->object.oid, &head)) ||
+ (!parent && unborn))) {
+ if (is_rebase_i(opts))
+ write_author_script(msg.message);
+ res = fast_forward_to(r, &commit->object.oid, &head, unborn,
+ opts);
+ if (res || command != TODO_REWORD)
+ goto leave;
+ reword = 1;
+ msg_file = NULL;
+ goto fast_forward_edit;
+ }
+ if (parent && parse_commit(parent) < 0)
+ /* TRANSLATORS: The first %s will be a "todo" command like
+ "revert" or "pick", the second %s a SHA1. */
+ return error(_("%s: cannot parse parent commit %s"),
+ command_to_string(command),
+ oid_to_hex(&parent->object.oid));
+
+ /*
+ * "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.
+ */
+
+ if (command == TODO_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, oid_to_hex(&commit->object.oid));
+
+ if (commit->parents && commit->parents->next) {
+ strbuf_addstr(&msgbuf, ", reversing\nchanges made to ");
+ strbuf_addstr(&msgbuf, oid_to_hex(&parent->object.oid));
+ }
+ 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. */
+ if (find_commit_subject(msg.message, &p))
+ strbuf_addstr(&msgbuf, p);
+
+ if (opts->record_origin) {
+ strbuf_complete_line(&msgbuf);
+ if (!has_conforming_footer(&msgbuf, NULL, 0))
+ strbuf_addch(&msgbuf, '\n');
+ strbuf_addstr(&msgbuf, cherry_picked_prefix);
+ strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid));
+ strbuf_addstr(&msgbuf, ")\n");
+ }
+ if (!is_fixup(command))
+ author = get_author(msg.message);
+ }
+
+ if (command == TODO_REWORD)
+ reword = 1;
+ else if (is_fixup(command)) {
+ if (update_squash_messages(r, command, commit, opts))
+ return -1;
+ flags |= AMEND_MSG;
+ if (!final_fixup)
+ msg_file = rebase_path_squash_msg();
+ else if (file_exists(rebase_path_fixup_msg())) {
+ flags |= CLEANUP_MSG;
+ msg_file = rebase_path_fixup_msg();
+ } else {
+ const char *dest = git_path_squash_msg(r);
+ unlink(dest);
+ if (copy_file(dest, rebase_path_squash_msg(), 0666))
+ return error(_("could not rename '%s' to '%s'"),
+ rebase_path_squash_msg(), dest);
+ unlink(git_path_merge_msg(r));
+ msg_file = dest;
+ flags |= EDIT_MSG;
+ }
+ }
+
+ if (opts->signoff && !is_fixup(command))
+ append_signoff(&msgbuf, 0, 0);
+
+ if (is_rebase_i(opts) && write_author_script(msg.message) < 0)
+ res = -1;
+ else if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) {
+ res = do_recursive_merge(r, base, next, base_label, next_label,
+ &head, &msgbuf, opts);
+ if (res < 0)
+ goto leave;
+
+ res |= write_message(msgbuf.buf, msgbuf.len,
+ git_path_merge_msg(r), 0);
+ } else {
+ struct commit_list *common = NULL;
+ struct commit_list *remotes = NULL;
+
+ res = write_message(msgbuf.buf, msgbuf.len,
+ git_path_merge_msg(r), 0);
+
+ commit_list_insert(base, &common);
+ commit_list_insert(next, &remotes);
+ res |= try_merge_command(r, opts->strategy,
+ opts->xopts_nr, (const char **)opts->xopts,
+ common, oid_to_hex(&head), remotes);
+ free_commit_list(common);
+ free_commit_list(remotes);
+ }
+ strbuf_release(&msgbuf);
+
+ /*
+ * 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 (command == TODO_PICK && !opts->no_commit && (res == 0 || res == 1) &&
+ update_ref(NULL, "CHERRY_PICK_HEAD", &commit->object.oid, NULL,
+ REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR))
+ res = -1;
+ if (command == TODO_REVERT && ((opts->no_commit && res == 0) || res == 1) &&
+ update_ref(NULL, "REVERT_HEAD", &commit->object.oid, NULL,
+ REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR))
+ res = -1;
+
+ if (res) {
+ error(command == TODO_REVERT
+ ? _("could not revert %s... %s")
+ : _("could not apply %s... %s"),
+ short_commit_name(commit), msg.subject);
+ print_advice(r, res == 1, opts);
+ repo_rerere(r, opts->allow_rerere_auto);
+ goto leave;
+ }
+
+ allow = allow_empty(r, opts, commit);
+ if (allow < 0) {
+ res = allow;
+ goto leave;
+ } else if (allow)
+ flags |= ALLOW_EMPTY;
+ if (!opts->no_commit) {
+ if (author || command == TODO_REVERT || (flags & AMEND_MSG))
+ res = do_commit(r, msg_file, author, opts, flags);
+ else
+ res = error(_("unable to parse commit author"));
+ *check_todo = !!(flags & EDIT_MSG);
+ if (!res && reword) {
+fast_forward_edit:
+ res = run_git_commit(r, NULL, opts, EDIT_MSG |
+ VERIFY_MSG | AMEND_MSG |
+ (flags & ALLOW_EMPTY));
+ *check_todo = 1;
+ }
+ }
+
+
+ if (!res && final_fixup) {
+ unlink(rebase_path_fixup_msg());
+ unlink(rebase_path_squash_msg());
+ unlink(rebase_path_current_fixups());
+ strbuf_reset(&opts->current_fixups);
+ opts->current_fixup_count = 0;
+ }
+
+leave:
+ free_message(commit, &msg);
+ free(author);
+ update_abort_safety_file();
+
+ return res;
+}
+
+static int prepare_revs(struct replay_opts *opts)
+{
+ /*
+ * picking (but not reverting) ranges (but not individual revisions)
+ * should be done in reverse
+ */
+ if (opts->action == REPLAY_PICK && !opts->revs->no_walk)
+ opts->revs->reverse ^= 1;
+
+ if (prepare_revision_walk(opts->revs))
+ return error(_("revision walk setup failed"));
+
+ return 0;
+}
+
+static int read_and_refresh_cache(struct repository *r,
+ struct replay_opts *opts)
+{
+ struct lock_file index_lock = LOCK_INIT;
+ int index_fd = repo_hold_locked_index(r, &index_lock, 0);
+ if (repo_read_index(r) < 0) {
+ rollback_lock_file(&index_lock);
+ return error(_("git %s: failed to read the index"),
+ _(action_name(opts)));
+ }
+ refresh_index(r->index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL);
+ if (index_fd >= 0) {
+ if (write_locked_index(r->index, &index_lock,
+ COMMIT_LOCK | SKIP_IF_UNCHANGED)) {
+ return error(_("git %s: failed to refresh the index"),
+ _(action_name(opts)));
+ }
+ }
+ return 0;
+}
+
+enum todo_item_flags {
+ TODO_EDIT_MERGE_MSG = 1
+};
+
+void todo_list_release(struct todo_list *todo_list)
+{
+ strbuf_release(&todo_list->buf);
+ FREE_AND_NULL(todo_list->items);
+ todo_list->nr = todo_list->alloc = 0;
+}
+
+static struct todo_item *append_new_todo(struct todo_list *todo_list)
+{
+ ALLOC_GROW(todo_list->items, todo_list->nr + 1, todo_list->alloc);
+ todo_list->total_nr++;
+ return todo_list->items + todo_list->nr++;
+}
+
+const char *todo_item_get_arg(struct todo_list *todo_list,
+ struct todo_item *item)
+{
+ return todo_list->buf.buf + item->arg_offset;
+}
+
+static int is_command(enum todo_command command, const char **bol)
+{
+ const char *str = todo_command_info[command].str;
+ const char nick = todo_command_info[command].c;
+ const char *p = *bol + 1;
+
+ return skip_prefix(*bol, str, bol) ||
+ ((nick && **bol == nick) &&
+ (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r' || !*p) &&
+ (*bol = p));
+}
+
+static int parse_insn_line(struct repository *r, struct todo_item *item,
+ const char *buf, const char *bol, char *eol)
+{
+ struct object_id commit_oid;
+ char *end_of_object_name;
+ int i, saved, status, padding;
+
+ item->flags = 0;
+
+ /* left-trim */
+ bol += strspn(bol, " \t");
+
+ if (bol == eol || *bol == '\r' || *bol == comment_line_char) {
+ item->command = TODO_COMMENT;
+ item->commit = NULL;
+ item->arg_offset = bol - buf;
+ item->arg_len = eol - bol;
+ return 0;
+ }
+
+ for (i = 0; i < TODO_COMMENT; i++)
+ if (is_command(i, &bol)) {
+ item->command = i;
+ break;
+ }
+ if (i >= TODO_COMMENT)
+ return -1;
+
+ /* Eat up extra spaces/ tabs before object name */
+ padding = strspn(bol, " \t");
+ bol += padding;
+
+ if (item->command == TODO_NOOP || item->command == TODO_BREAK) {
+ if (bol != eol)
+ return error(_("%s does not accept arguments: '%s'"),
+ command_to_string(item->command), bol);
+ item->commit = NULL;
+ item->arg_offset = bol - buf;
+ item->arg_len = eol - bol;
+ return 0;
+ }
+
+ if (!padding)
+ return error(_("missing arguments for %s"),
+ command_to_string(item->command));
+
+ if (item->command == TODO_EXEC || item->command == TODO_LABEL ||
+ item->command == TODO_RESET) {
+ item->commit = NULL;
+ item->arg_offset = bol - buf;
+ item->arg_len = (int)(eol - bol);
+ return 0;
+ }
+
+ if (item->command == TODO_MERGE) {
+ if (skip_prefix(bol, "-C", &bol))
+ bol += strspn(bol, " \t");
+ else if (skip_prefix(bol, "-c", &bol)) {
+ bol += strspn(bol, " \t");
+ item->flags |= TODO_EDIT_MERGE_MSG;
+ } else {
+ item->flags |= TODO_EDIT_MERGE_MSG;
+ item->commit = NULL;
+ item->arg_offset = bol - buf;
+ item->arg_len = (int)(eol - bol);
+ return 0;
+ }
+ }
+
+ end_of_object_name = (char *) bol + strcspn(bol, " \t\n");
+ saved = *end_of_object_name;
+ *end_of_object_name = '\0';
+ status = get_oid(bol, &commit_oid);
+ if (status < 0)
+ error(_("could not parse '%s'"), bol); /* return later */
+ *end_of_object_name = saved;
+
+ bol = end_of_object_name + strspn(end_of_object_name, " \t");
+ item->arg_offset = bol - buf;
+ item->arg_len = (int)(eol - bol);
+
+ if (status < 0)
+ return status;
+
+ item->commit = lookup_commit_reference(r, &commit_oid);
+ return item->commit ? 0 : -1;
+}
+
+int sequencer_get_last_command(struct repository *r, enum replay_action *action)
+{
+ const char *todo_file, *bol;
+ struct strbuf buf = STRBUF_INIT;
+ int ret = 0;
+
+ todo_file = git_path_todo_file();
+ if (strbuf_read_file(&buf, todo_file, 0) < 0) {
+ if (errno == ENOENT || errno == ENOTDIR)
+ return -1;
+ else
+ return error_errno("unable to open '%s'", todo_file);
+ }
+ bol = buf.buf + strspn(buf.buf, " \t\r\n");
+ if (is_command(TODO_PICK, &bol) && (*bol == ' ' || *bol == '\t'))
+ *action = REPLAY_PICK;
+ else if (is_command(TODO_REVERT, &bol) &&
+ (*bol == ' ' || *bol == '\t'))
+ *action = REPLAY_REVERT;
+ else
+ ret = -1;
+
+ strbuf_release(&buf);
+
+ return ret;
+}
+
+int todo_list_parse_insn_buffer(struct repository *r, char *buf,
+ struct todo_list *todo_list)
+{
+ struct todo_item *item;
+ char *p = buf, *next_p;
+ int i, res = 0, fixup_okay = file_exists(rebase_path_done());
+
+ todo_list->current = todo_list->nr = 0;
+
+ for (i = 1; *p; i++, p = next_p) {
+ char *eol = strchrnul(p, '\n');
+
+ next_p = *eol ? eol + 1 /* skip LF */ : eol;
+
+ if (p != eol && eol[-1] == '\r')
+ eol--; /* strip Carriage Return */
+
+ item = append_new_todo(todo_list);
+ item->offset_in_buf = p - todo_list->buf.buf;
+ if (parse_insn_line(r, item, buf, p, eol)) {
+ res = error(_("invalid line %d: %.*s"),
+ i, (int)(eol - p), p);
+ item->command = TODO_COMMENT + 1;
+ item->arg_offset = p - buf;
+ item->arg_len = (int)(eol - p);
+ item->commit = NULL;
+ }
+
+ if (fixup_okay)
+ ; /* do nothing */
+ else if (is_fixup(item->command))
+ return error(_("cannot '%s' without a previous commit"),
+ command_to_string(item->command));
+ else if (!is_noop(item->command))
+ fixup_okay = 1;
+ }
+
+ return res;
+}
+
+static int count_commands(struct todo_list *todo_list)
+{
+ int count = 0, i;
+
+ for (i = 0; i < todo_list->nr; i++)
+ if (todo_list->items[i].command != TODO_COMMENT)
+ count++;
+
+ return count;
+}
+
+static int get_item_line_offset(struct todo_list *todo_list, int index)
+{
+ return index < todo_list->nr ?
+ todo_list->items[index].offset_in_buf : todo_list->buf.len;
+}
+
+static const char *get_item_line(struct todo_list *todo_list, int index)
+{
+ return todo_list->buf.buf + get_item_line_offset(todo_list, index);
+}
+
+static int get_item_line_length(struct todo_list *todo_list, int index)
+{
+ return get_item_line_offset(todo_list, index + 1)
+ - get_item_line_offset(todo_list, index);
+}
+
+static ssize_t strbuf_read_file_or_whine(struct strbuf *sb, const char *path)
+{
+ int fd;
+ ssize_t len;
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ return error_errno(_("could not open '%s'"), path);
+ len = strbuf_read(sb, fd, 0);
+ close(fd);
+ if (len < 0)
+ return error(_("could not read '%s'."), path);
+ return len;
+}
+
+static int have_finished_the_last_pick(void)
+{
+ struct strbuf buf = STRBUF_INIT;
+ const char *eol;
+ const char *todo_path = git_path_todo_file();
+ int ret = 0;
+
+ if (strbuf_read_file(&buf, todo_path, 0) < 0) {
+ if (errno == ENOENT) {
+ return 0;
+ } else {
+ error_errno("unable to open '%s'", todo_path);
+ return 0;
+ }
+ }
+ /* If there is only one line then we are done */
+ eol = strchr(buf.buf, '\n');
+ if (!eol || !eol[1])
+ ret = 1;
+
+ strbuf_release(&buf);
+
+ return ret;
+}
+
+void sequencer_post_commit_cleanup(struct repository *r, int verbose)
+{
+ struct replay_opts opts = REPLAY_OPTS_INIT;
+ int need_cleanup = 0;
+
+ if (file_exists(git_path_cherry_pick_head(r))) {
+ if (!unlink(git_path_cherry_pick_head(r)) && verbose)
+ warning(_("cancelling a cherry picking in progress"));
+ opts.action = REPLAY_PICK;
+ need_cleanup = 1;
+ }
+
+ if (file_exists(git_path_revert_head(r))) {
+ if (!unlink(git_path_revert_head(r)) && verbose)
+ warning(_("cancelling a revert in progress"));
+ opts.action = REPLAY_REVERT;
+ need_cleanup = 1;
+ }
+
+ if (!need_cleanup)
+ return;
+
+ if (!have_finished_the_last_pick())
+ return;
+
+ sequencer_remove_state(&opts);
+}
+
+static void todo_list_write_total_nr(struct todo_list *todo_list)
+{
+ FILE *f = fopen_or_warn(rebase_path_msgtotal(), "w");
+
+ if (f) {
+ fprintf(f, "%d\n", todo_list->total_nr);
+ fclose(f);
+ }
+}
+
+static int read_populate_todo(struct repository *r,
+ struct todo_list *todo_list,
+ struct replay_opts *opts)
+{
+ struct stat st;
+ const char *todo_file = get_todo_path(opts);
+ int res;
+
+ strbuf_reset(&todo_list->buf);
+ if (strbuf_read_file_or_whine(&todo_list->buf, todo_file) < 0)
+ return -1;
+
+ res = stat(todo_file, &st);
+ if (res)
+ return error(_("could not stat '%s'"), todo_file);
+ fill_stat_data(&todo_list->stat, &st);
+
+ res = todo_list_parse_insn_buffer(r, todo_list->buf.buf, todo_list);
+ if (res) {
+ if (is_rebase_i(opts))
+ return error(_("please fix this using "
+ "'git rebase --edit-todo'."));
+ return error(_("unusable instruction sheet: '%s'"), todo_file);
+ }
+
+ if (!todo_list->nr &&
+ (!is_rebase_i(opts) || !file_exists(rebase_path_done())))
+ return error(_("no commits parsed."));
+
+ if (!is_rebase_i(opts)) {
+ enum todo_command valid =
+ opts->action == REPLAY_PICK ? TODO_PICK : TODO_REVERT;
+ int i;
+
+ for (i = 0; i < todo_list->nr; i++)
+ if (valid == todo_list->items[i].command)
+ continue;
+ else if (valid == TODO_PICK)
+ return error(_("cannot cherry-pick during a revert."));
+ else
+ return error(_("cannot revert during a cherry-pick."));
+ }
+
+ if (is_rebase_i(opts)) {
+ struct todo_list done = TODO_LIST_INIT;
+
+ if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 &&
+ !todo_list_parse_insn_buffer(r, done.buf.buf, &done))
+ todo_list->done_nr = count_commands(&done);
+ else
+ todo_list->done_nr = 0;
+
+ todo_list->total_nr = todo_list->done_nr
+ + count_commands(todo_list);
+ todo_list_release(&done);
+
+ todo_list_write_total_nr(todo_list);
+ }
+
+ return 0;
+}
+
+static int git_config_string_dup(char **dest,
+ const char *var, const char *value)
+{
+ if (!value)
+ return config_error_nonbool(var);
+ free(*dest);
+ *dest = xstrdup(value);
+ return 0;
+}
+
+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.allow-empty"))
+ opts->allow_empty =
+ git_config_bool_or_int(key, value, &error_flag);
+ else if (!strcmp(key, "options.allow-empty-message"))
+ opts->allow_empty_message =
+ git_config_bool_or_int(key, value, &error_flag);
+ else if (!strcmp(key, "options.keep-redundant-commits"))
+ opts->keep_redundant_commits =
+ 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_dup(&opts->strategy, key, value);
+ else if (!strcmp(key, "options.gpg-sign"))
+ git_config_string_dup(&opts->gpg_sign, 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 if (!strcmp(key, "options.allow-rerere-auto"))
+ opts->allow_rerere_auto =
+ git_config_bool_or_int(key, value, &error_flag) ?
+ RERERE_AUTOUPDATE : RERERE_NOAUTOUPDATE;
+ else if (!strcmp(key, "options.default-msg-cleanup")) {
+ opts->explicit_cleanup = 1;
+ opts->default_msg_cleanup = get_cleanup_mode(value, 1);
+ } else
+ return error(_("invalid key: %s"), key);
+
+ if (!error_flag)
+ return error(_("invalid value for %s: %s"), key, value);
+
+ return 0;
+}
+
+void parse_strategy_opts(struct replay_opts *opts, char *raw_opts)
+{
+ int i;
+ char *strategy_opts_string = raw_opts;
+
+ if (*strategy_opts_string == ' ')
+ strategy_opts_string++;
+
+ opts->xopts_nr = split_cmdline(strategy_opts_string,
+ (const char ***)&opts->xopts);
+ for (i = 0; i < opts->xopts_nr; i++) {
+ const char *arg = opts->xopts[i];
+
+ skip_prefix(arg, "--", &arg);
+ opts->xopts[i] = xstrdup(arg);
+ }
+}
+
+static void read_strategy_opts(struct replay_opts *opts, struct strbuf *buf)
+{
+ strbuf_reset(buf);
+ if (!read_oneliner(buf, rebase_path_strategy(), 0))
+ return;
+ opts->strategy = strbuf_detach(buf, NULL);
+ if (!read_oneliner(buf, rebase_path_strategy_opts(), 0))
+ return;
+
+ parse_strategy_opts(opts, buf->buf);
+}
+
+static int read_populate_opts(struct replay_opts *opts)
+{
+ if (is_rebase_i(opts)) {
+ struct strbuf buf = STRBUF_INIT;
+
+ if (read_oneliner(&buf, rebase_path_gpg_sign_opt(), 1)) {
+ if (!starts_with(buf.buf, "-S"))
+ strbuf_reset(&buf);
+ else {
+ free(opts->gpg_sign);
+ opts->gpg_sign = xstrdup(buf.buf + 2);
+ }
+ strbuf_reset(&buf);
+ }
+
+ if (read_oneliner(&buf, rebase_path_allow_rerere_autoupdate(), 1)) {
+ if (!strcmp(buf.buf, "--rerere-autoupdate"))
+ opts->allow_rerere_auto = RERERE_AUTOUPDATE;
+ else if (!strcmp(buf.buf, "--no-rerere-autoupdate"))
+ opts->allow_rerere_auto = RERERE_NOAUTOUPDATE;
+ strbuf_reset(&buf);
+ }
+
+ if (file_exists(rebase_path_verbose()))
+ opts->verbose = 1;
+
+ if (file_exists(rebase_path_quiet()))
+ opts->quiet = 1;
+
+ if (file_exists(rebase_path_signoff())) {
+ opts->allow_ff = 0;
+ opts->signoff = 1;
+ }
+
+ if (file_exists(rebase_path_reschedule_failed_exec()))
+ opts->reschedule_failed_exec = 1;
+
+ read_strategy_opts(opts, &buf);
+ strbuf_release(&buf);
+
+ if (read_oneliner(&opts->current_fixups,
+ rebase_path_current_fixups(), 1)) {
+ const char *p = opts->current_fixups.buf;
+ opts->current_fixup_count = 1;
+ while ((p = strchr(p, '\n'))) {
+ opts->current_fixup_count++;
+ p++;
+ }
+ }
+
+ if (read_oneliner(&buf, rebase_path_squash_onto(), 0)) {
+ if (get_oid_hex(buf.buf, &opts->squash_onto) < 0)
+ return error(_("unusable squash-onto"));
+ opts->have_squash_onto = 1;
+ }
+
+ return 0;
+ }
+
+ if (!file_exists(git_path_opts_file()))
+ return 0;
+ /*
+ * The function git_parse_source(), called from git_config_from_file(),
+ * may die() in case of a syntactically incorrect file. We do not care
+ * about this case, though, because we wrote that file ourselves, so we
+ * are pretty certain that it is syntactically correct.
+ */
+ if (git_config_from_file(populate_opts_cb, git_path_opts_file(), opts) < 0)
+ return error(_("malformed options sheet: '%s'"),
+ git_path_opts_file());
+ return 0;
+}
+
+static void write_strategy_opts(struct replay_opts *opts)
+{
+ int i;
+ struct strbuf buf = STRBUF_INIT;
+
+ for (i = 0; i < opts->xopts_nr; ++i)
+ strbuf_addf(&buf, " --%s", opts->xopts[i]);
+
+ write_file(rebase_path_strategy_opts(), "%s\n", buf.buf);
+ strbuf_release(&buf);
+}
+
+int write_basic_state(struct replay_opts *opts, const char *head_name,
+ struct commit *onto, const char *orig_head)
+{
+ const char *quiet = getenv("GIT_QUIET");
+
+ if (head_name)
+ write_file(rebase_path_head_name(), "%s\n", head_name);
+ if (onto)
+ write_file(rebase_path_onto(), "%s\n",
+ oid_to_hex(&onto->object.oid));
+ if (orig_head)
+ write_file(rebase_path_orig_head(), "%s\n", orig_head);
+
+ if (quiet)
+ write_file(rebase_path_quiet(), "%s\n", quiet);
+ if (opts->verbose)
+ write_file(rebase_path_verbose(), "%s", "");
+ if (opts->strategy)
+ write_file(rebase_path_strategy(), "%s\n", opts->strategy);
+ if (opts->xopts_nr > 0)
+ write_strategy_opts(opts);
+
+ if (opts->allow_rerere_auto == RERERE_AUTOUPDATE)
+ write_file(rebase_path_allow_rerere_autoupdate(), "--rerere-autoupdate\n");
+ else if (opts->allow_rerere_auto == RERERE_NOAUTOUPDATE)
+ write_file(rebase_path_allow_rerere_autoupdate(), "--no-rerere-autoupdate\n");
+
+ if (opts->gpg_sign)
+ write_file(rebase_path_gpg_sign_opt(), "-S%s\n", opts->gpg_sign);
+ if (opts->signoff)
+ write_file(rebase_path_signoff(), "--signoff\n");
+ if (opts->reschedule_failed_exec)
+ write_file(rebase_path_reschedule_failed_exec(), "%s", "");
+
+ return 0;
+}
+
+static int walk_revs_populate_todo(struct todo_list *todo_list,
+ struct replay_opts *opts)
+{
+ enum todo_command command = opts->action == REPLAY_PICK ?
+ TODO_PICK : TODO_REVERT;
+ const char *command_string = todo_command_info[command].str;
+ const char *encoding;
+ struct commit *commit;
+
+ if (prepare_revs(opts))
+ return -1;
+
+ encoding = get_log_output_encoding();
+
+ while ((commit = get_revision(opts->revs))) {
+ struct todo_item *item = append_new_todo(todo_list);
+ const char *commit_buffer = logmsg_reencode(commit, NULL, encoding);
+ const char *subject;
+ int subject_len;
+
+ item->command = command;
+ item->commit = commit;
+ item->arg_offset = 0;
+ item->arg_len = 0;
+ item->offset_in_buf = todo_list->buf.len;
+ subject_len = find_commit_subject(commit_buffer, &subject);
+ strbuf_addf(&todo_list->buf, "%s %s %.*s\n", command_string,
+ short_commit_name(commit), subject_len, subject);
+ unuse_commit_buffer(commit, commit_buffer);
+ }
+
+ if (!todo_list->nr)
+ return error(_("empty commit set passed"));
+
+ return 0;
+}
+
+static int create_seq_dir(struct repository *r)
+{
+ enum replay_action action;
+ const char *in_progress_error = NULL;
+ const char *in_progress_advice = NULL;
+ unsigned int advise_skip = file_exists(git_path_revert_head(r)) ||
+ file_exists(git_path_cherry_pick_head(r));
+
+ if (!sequencer_get_last_command(r, &action)) {
+ switch (action) {
+ case REPLAY_REVERT:
+ in_progress_error = _("revert is already in progress");
+ in_progress_advice =
+ _("try \"git revert (--continue | %s--abort | --quit)\"");
+ break;
+ case REPLAY_PICK:
+ in_progress_error = _("cherry-pick is already in progress");
+ in_progress_advice =
+ _("try \"git cherry-pick (--continue | %s--abort | --quit)\"");
+ break;
+ default:
+ BUG("unexpected action in create_seq_dir");
+ }
+ }
+ if (in_progress_error) {
+ error("%s", in_progress_error);
+ if (advice_sequencer_in_use)
+ advise(in_progress_advice,
+ advise_skip ? "--skip | " : "");
+ return -1;
+ }
+ if (mkdir(git_path_seq_dir(), 0777) < 0)
+ return error_errno(_("could not create sequencer directory '%s'"),
+ git_path_seq_dir());
+
+ return 0;
+}
+
+static int save_head(const char *head)
+{
+ struct lock_file head_lock = LOCK_INIT;
+ struct strbuf buf = STRBUF_INIT;
+ int fd;
+ ssize_t written;
+
+ fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), 0);
+ if (fd < 0)
+ return error_errno(_("could not lock HEAD"));
+ strbuf_addf(&buf, "%s\n", head);
+ written = write_in_full(fd, buf.buf, buf.len);
+ strbuf_release(&buf);
+ if (written < 0) {
+ error_errno(_("could not write to '%s'"), git_path_head_file());
+ rollback_lock_file(&head_lock);
+ return -1;
+ }
+ if (commit_lock_file(&head_lock) < 0)
+ return error(_("failed to finalize '%s'"), git_path_head_file());
+ return 0;
+}
+
+static int rollback_is_safe(void)
+{
+ struct strbuf sb = STRBUF_INIT;
+ struct object_id expected_head, actual_head;
+
+ if (strbuf_read_file(&sb, git_path_abort_safety_file(), 0) >= 0) {
+ strbuf_trim(&sb);
+ if (get_oid_hex(sb.buf, &expected_head)) {
+ strbuf_release(&sb);
+ die(_("could not parse %s"), git_path_abort_safety_file());
+ }
+ strbuf_release(&sb);
+ }
+ else if (errno == ENOENT)
+ oidclr(&expected_head);
+ else
+ die_errno(_("could not read '%s'"), git_path_abort_safety_file());
+
+ if (get_oid("HEAD", &actual_head))
+ oidclr(&actual_head);
+
+ return oideq(&actual_head, &expected_head);
+}
+
+static int reset_merge(const struct object_id *oid)
+{
+ int ret;
+ struct argv_array argv = ARGV_ARRAY_INIT;
+
+ argv_array_pushl(&argv, "reset", "--merge", NULL);
+
+ if (!is_null_oid(oid))
+ argv_array_push(&argv, oid_to_hex(oid));
+
+ ret = run_command_v_opt(argv.argv, RUN_GIT_CMD);
+ argv_array_clear(&argv);
+
+ return ret;
+}
+
+static int rollback_single_pick(struct repository *r)
+{
+ struct object_id head_oid;
+
+ if (!file_exists(git_path_cherry_pick_head(r)) &&
+ !file_exists(git_path_revert_head(r)))
+ return error(_("no cherry-pick or revert in progress"));
+ if (read_ref_full("HEAD", 0, &head_oid, NULL))
+ return error(_("cannot resolve HEAD"));
+ if (is_null_oid(&head_oid))
+ return error(_("cannot abort from a branch yet to be born"));
+ return reset_merge(&head_oid);
+}
+
+static int skip_single_pick(void)
+{
+ struct object_id head;
+
+ if (read_ref_full("HEAD", 0, &head, NULL))
+ return error(_("cannot resolve HEAD"));
+ return reset_merge(&head);
+}
+
+int sequencer_rollback(struct repository *r, struct replay_opts *opts)
+{
+ FILE *f;
+ struct object_id oid;
+ struct strbuf buf = STRBUF_INIT;
+ const char *p;
+
+ f = fopen(git_path_head_file(), "r");
+ if (!f && errno == ENOENT) {
+ /*
+ * There is no multiple-cherry-pick in progress.
+ * If CHERRY_PICK_HEAD or REVERT_HEAD indicates
+ * a single-cherry-pick in progress, abort that.
+ */
+ return rollback_single_pick(r);
+ }
+ if (!f)
+ return error_errno(_("cannot open '%s'"), git_path_head_file());
+ if (strbuf_getline_lf(&buf, f)) {
+ error(_("cannot read '%s': %s"), git_path_head_file(),
+ ferror(f) ? strerror(errno) : _("unexpected end of file"));
+ fclose(f);
+ goto fail;
+ }
+ fclose(f);
+ if (parse_oid_hex(buf.buf, &oid, &p) || *p != '\0') {
+ error(_("stored pre-cherry-pick HEAD file '%s' is corrupt"),
+ git_path_head_file());
+ goto fail;
+ }
+ if (is_null_oid(&oid)) {
+ error(_("cannot abort from a branch yet to be born"));
+ goto fail;
+ }
+
+ if (!rollback_is_safe()) {
+ /* Do not error, just do not rollback */
+ warning(_("You seem to have moved HEAD. "
+ "Not rewinding, check your HEAD!"));
+ } else
+ if (reset_merge(&oid))
+ goto fail;
+ strbuf_release(&buf);
+ return sequencer_remove_state(opts);
+fail:
+ strbuf_release(&buf);
+ return -1;
+}
+
+int sequencer_skip(struct repository *r, struct replay_opts *opts)
+{
+ enum replay_action action = -1;
+ sequencer_get_last_command(r, &action);
+
+ /*
+ * Check whether the subcommand requested to skip the commit is actually
+ * in progress and that it's safe to skip the commit.
+ *
+ * opts->action tells us which subcommand requested to skip the commit.
+ * If the corresponding .git/<ACTION>_HEAD exists, we know that the
+ * action is in progress and we can skip the commit.
+ *
+ * Otherwise we check that the last instruction was related to the
+ * particular subcommand we're trying to execute and barf if that's not
+ * the case.
+ *
+ * Finally we check that the rollback is "safe", i.e., has the HEAD
+ * moved? In this case, it doesn't make sense to "reset the merge" and
+ * "skip the commit" as the user already handled this by committing. But
+ * we'd not want to barf here, instead give advice on how to proceed. We
+ * only need to check that when .git/<ACTION>_HEAD doesn't exist because
+ * it gets removed when the user commits, so if it still exists we're
+ * sure the user can't have committed before.
+ */
+ switch (opts->action) {
+ case REPLAY_REVERT:
+ if (!file_exists(git_path_revert_head(r))) {
+ if (action != REPLAY_REVERT)
+ return error(_("no revert in progress"));
+ if (!rollback_is_safe())
+ goto give_advice;
+ }
+ break;
+ case REPLAY_PICK:
+ if (!file_exists(git_path_cherry_pick_head(r))) {
+ if (action != REPLAY_PICK)
+ return error(_("no cherry-pick in progress"));
+ if (!rollback_is_safe())
+ goto give_advice;
+ }
+ break;
+ default:
+ BUG("unexpected action in sequencer_skip");
+ }
+
+ if (skip_single_pick())
+ return error(_("failed to skip the commit"));
+ if (!is_directory(git_path_seq_dir()))
+ return 0;
+
+ return sequencer_continue(r, opts);
+
+give_advice:
+ error(_("there is nothing to skip"));
+
+ if (advice_resolve_conflict) {
+ advise(_("have you committed already?\n"
+ "try \"git %s --continue\""),
+ action == REPLAY_REVERT ? "revert" : "cherry-pick");
+ }
+ return -1;
+}
+
+static int save_todo(struct todo_list *todo_list, struct replay_opts *opts)
+{
+ struct lock_file todo_lock = LOCK_INIT;
+ const char *todo_path = get_todo_path(opts);
+ int next = todo_list->current, offset, fd;
+
+ /*
+ * rebase -i writes "git-rebase-todo" without the currently executing
+ * command, appending it to "done" instead.
+ */
+ if (is_rebase_i(opts))
+ next++;
+
+ fd = hold_lock_file_for_update(&todo_lock, todo_path, 0);
+ if (fd < 0)
+ return error_errno(_("could not lock '%s'"), todo_path);
+ offset = get_item_line_offset(todo_list, next);
+ if (write_in_full(fd, todo_list->buf.buf + offset,
+ todo_list->buf.len - offset) < 0)
+ return error_errno(_("could not write to '%s'"), todo_path);
+ if (commit_lock_file(&todo_lock) < 0)
+ return error(_("failed to finalize '%s'"), todo_path);
+
+ if (is_rebase_i(opts) && next > 0) {
+ const char *done = rebase_path_done();
+ int fd = open(done, O_CREAT | O_WRONLY | O_APPEND, 0666);
+ int ret = 0;
+
+ if (fd < 0)
+ return 0;
+ if (write_in_full(fd, get_item_line(todo_list, next - 1),
+ get_item_line_length(todo_list, next - 1))
+ < 0)
+ ret = error_errno(_("could not write to '%s'"), done);
+ if (close(fd) < 0)
+ ret = error_errno(_("failed to finalize '%s'"), done);
+ return ret;
+ }
+ return 0;
+}
+
+static int save_opts(struct replay_opts *opts)
+{
+ const char *opts_file = git_path_opts_file();
+ int res = 0;
+
+ if (opts->no_commit)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.no-commit", "true");
+ if (opts->edit)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.edit", "true");
+ if (opts->allow_empty)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.allow-empty", "true");
+ if (opts->allow_empty_message)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.allow-empty-message", "true");
+ if (opts->keep_redundant_commits)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.keep-redundant-commits", "true");
+ if (opts->signoff)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.signoff", "true");
+ if (opts->record_origin)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.record-origin", "true");
+ if (opts->allow_ff)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.allow-ff", "true");
+ if (opts->mainline) {
+ struct strbuf buf = STRBUF_INIT;
+ strbuf_addf(&buf, "%d", opts->mainline);
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.mainline", buf.buf);
+ strbuf_release(&buf);
+ }
+ if (opts->strategy)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.strategy", opts->strategy);
+ if (opts->gpg_sign)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.gpg-sign", opts->gpg_sign);
+ if (opts->xopts) {
+ int i;
+ for (i = 0; i < opts->xopts_nr; i++)
+ res |= git_config_set_multivar_in_file_gently(opts_file,
+ "options.strategy-option",
+ opts->xopts[i], "^$", 0);
+ }
+ if (opts->allow_rerere_auto)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.allow-rerere-auto",
+ opts->allow_rerere_auto == RERERE_AUTOUPDATE ?
+ "true" : "false");
+
+ if (opts->explicit_cleanup)
+ res |= git_config_set_in_file_gently(opts_file,
+ "options.default-msg-cleanup",
+ describe_cleanup_mode(opts->default_msg_cleanup));
+ return res;
+}
+
+static int make_patch(struct repository *r,
+ struct commit *commit,
+ struct replay_opts *opts)
+{
+ struct strbuf buf = STRBUF_INIT;
+ struct rev_info log_tree_opt;
+ const char *subject, *p;
+ int res = 0;
+
+ p = short_commit_name(commit);
+ if (write_message(p, strlen(p), rebase_path_stopped_sha(), 1) < 0)
+ return -1;
+ if (update_ref("rebase", "REBASE_HEAD", &commit->object.oid,
+ NULL, REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR))
+ res |= error(_("could not update %s"), "REBASE_HEAD");
+
+ strbuf_addf(&buf, "%s/patch", get_dir(opts));
+ memset(&log_tree_opt, 0, sizeof(log_tree_opt));
+ repo_init_revisions(r, &log_tree_opt, NULL);
+ log_tree_opt.abbrev = 0;
+ log_tree_opt.diff = 1;
+ log_tree_opt.diffopt.output_format = DIFF_FORMAT_PATCH;
+ log_tree_opt.disable_stdin = 1;
+ log_tree_opt.no_commit_id = 1;
+ log_tree_opt.diffopt.file = fopen(buf.buf, "w");
+ log_tree_opt.diffopt.use_color = GIT_COLOR_NEVER;
+ if (!log_tree_opt.diffopt.file)
+ res |= error_errno(_("could not open '%s'"), buf.buf);
+ else {
+ res |= log_tree_commit(&log_tree_opt, commit);
+ fclose(log_tree_opt.diffopt.file);
+ }
+ strbuf_reset(&buf);
+
+ strbuf_addf(&buf, "%s/message", get_dir(opts));
+ if (!file_exists(buf.buf)) {
+ const char *encoding = get_commit_output_encoding();
+ const char *commit_buffer = logmsg_reencode(commit, NULL, encoding);
+ find_commit_subject(commit_buffer, &subject);
+ res |= write_message(subject, strlen(subject), buf.buf, 1);
+ unuse_commit_buffer(commit, commit_buffer);
+ }
+ strbuf_release(&buf);
+
+ return res;
+}
+
+static int intend_to_amend(void)
+{
+ struct object_id head;
+ char *p;
+
+ if (get_oid("HEAD", &head))
+ return error(_("cannot read HEAD"));
+
+ p = oid_to_hex(&head);
+ return write_message(p, strlen(p), rebase_path_amend(), 1);
+}
+
+static int error_with_patch(struct repository *r,
+ struct commit *commit,
+ const char *subject, int subject_len,
+ struct replay_opts *opts,
+ int exit_code, int to_amend)
+{
+ if (commit) {
+ if (make_patch(r, commit, opts))
+ return -1;
+ } else if (copy_file(rebase_path_message(),
+ git_path_merge_msg(r), 0666))
+ return error(_("unable to copy '%s' to '%s'"),
+ git_path_merge_msg(r), rebase_path_message());
+
+ if (to_amend) {
+ if (intend_to_amend())
+ return -1;
+
+ fprintf(stderr,
+ _("You can amend the commit now, with\n"
+ "\n"
+ " git commit --amend %s\n"
+ "\n"
+ "Once you are satisfied with your changes, run\n"
+ "\n"
+ " git rebase --continue\n"),
+ gpg_sign_opt_quoted(opts));
+ } else if (exit_code) {
+ if (commit)
+ fprintf_ln(stderr, _("Could not apply %s... %.*s"),
+ short_commit_name(commit), subject_len, subject);
+ else
+ /*
+ * We don't have the hash of the parent so
+ * just print the line from the todo file.
+ */
+ fprintf_ln(stderr, _("Could not merge %.*s"),
+ subject_len, subject);
+ }
+
+ return exit_code;
+}
+
+static int error_failed_squash(struct repository *r,
+ struct commit *commit,
+ struct replay_opts *opts,
+ int subject_len,
+ const char *subject)
+{
+ if (copy_file(rebase_path_message(), rebase_path_squash_msg(), 0666))
+ return error(_("could not copy '%s' to '%s'"),
+ rebase_path_squash_msg(), rebase_path_message());
+ unlink(git_path_merge_msg(r));
+ if (copy_file(git_path_merge_msg(r), rebase_path_message(), 0666))
+ return error(_("could not copy '%s' to '%s'"),
+ rebase_path_message(),
+ git_path_merge_msg(r));
+ return error_with_patch(r, commit, subject, subject_len, opts, 1, 0);
+}
+
+static int do_exec(struct repository *r, const char *command_line)
+{
+ struct argv_array child_env = ARGV_ARRAY_INIT;
+ const char *child_argv[] = { NULL, NULL };
+ int dirty, status;
+
+ fprintf(stderr, "Executing: %s\n", command_line);
+ child_argv[0] = command_line;
+ argv_array_pushf(&child_env, "GIT_DIR=%s", absolute_path(get_git_dir()));
+ argv_array_pushf(&child_env, "GIT_WORK_TREE=%s",
+ absolute_path(get_git_work_tree()));
+ status = run_command_v_opt_cd_env(child_argv, RUN_USING_SHELL, NULL,
+ child_env.argv);
+
+ /* force re-reading of the cache */
+ if (discard_index(r->index) < 0 || repo_read_index(r) < 0)
+ return error(_("could not read index"));
+
+ dirty = require_clean_work_tree(r, "rebase", NULL, 1, 1);
+
+ if (status) {
+ warning(_("execution failed: %s\n%s"
+ "You can fix the problem, and then run\n"
+ "\n"
+ " git rebase --continue\n"
+ "\n"),
+ command_line,
+ dirty ? N_("and made changes to the index and/or the "
+ "working tree\n") : "");
+ if (status == 127)
+ /* command not found */
+ status = 1;
+ } else if (dirty) {
+ warning(_("execution succeeded: %s\nbut "
+ "left changes to the index and/or the working tree\n"
+ "Commit or stash your changes, and then run\n"
+ "\n"
+ " git rebase --continue\n"
+ "\n"), command_line);
+ status = 1;
+ }
+
+ argv_array_clear(&child_env);
+
+ return status;
+}
+
+static int safe_append(const char *filename, const char *fmt, ...)
+{
+ va_list ap;
+ struct lock_file lock = LOCK_INIT;
+ int fd = hold_lock_file_for_update(&lock, filename,
+ LOCK_REPORT_ON_ERROR);
+ struct strbuf buf = STRBUF_INIT;
+
+ if (fd < 0)
+ return -1;
+
+ if (strbuf_read_file(&buf, filename, 0) < 0 && errno != ENOENT) {
+ error_errno(_("could not read '%s'"), filename);
+ rollback_lock_file(&lock);
+ return -1;
+ }
+ strbuf_complete(&buf, '\n');
+ va_start(ap, fmt);
+ strbuf_vaddf(&buf, fmt, ap);
+ va_end(ap);
+
+ if (write_in_full(fd, buf.buf, buf.len) < 0) {
+ error_errno(_("could not write to '%s'"), filename);
+ strbuf_release(&buf);
+ rollback_lock_file(&lock);
+ return -1;
+ }
+ if (commit_lock_file(&lock) < 0) {
+ strbuf_release(&buf);
+ rollback_lock_file(&lock);
+ return error(_("failed to finalize '%s'"), filename);
+ }
+
+ strbuf_release(&buf);
+ return 0;
+}
+
+static int do_label(struct repository *r, const char *name, int len)
+{
+ struct ref_store *refs = get_main_ref_store(r);
+ struct ref_transaction *transaction;
+ struct strbuf ref_name = STRBUF_INIT, err = STRBUF_INIT;
+ struct strbuf msg = STRBUF_INIT;
+ int ret = 0;
+ struct object_id head_oid;
+
+ if (len == 1 && *name == '#')
+ return error(_("illegal label name: '%.*s'"), len, name);
+
+ strbuf_addf(&ref_name, "refs/rewritten/%.*s", len, name);
+ strbuf_addf(&msg, "rebase -i (label) '%.*s'", len, name);
+
+ transaction = ref_store_transaction_begin(refs, &err);
+ if (!transaction) {
+ error("%s", err.buf);
+ ret = -1;
+ } else if (get_oid("HEAD", &head_oid)) {
+ error(_("could not read HEAD"));
+ ret = -1;
+ } else if (ref_transaction_update(transaction, ref_name.buf, &head_oid,
+ NULL, 0, msg.buf, &err) < 0 ||
+ ref_transaction_commit(transaction, &err)) {
+ error("%s", err.buf);
+ ret = -1;
+ }
+ ref_transaction_free(transaction);
+ strbuf_release(&err);
+ strbuf_release(&msg);
+
+ if (!ret)
+ ret = safe_append(rebase_path_refs_to_delete(),
+ "%s\n", ref_name.buf);
+ strbuf_release(&ref_name);
+
+ return ret;
+}
+
+static const char *reflog_message(struct replay_opts *opts,
+ const char *sub_action, const char *fmt, ...);
+
+static int do_reset(struct repository *r,
+ const char *name, int len,
+ struct replay_opts *opts)
+{
+ struct strbuf ref_name = STRBUF_INIT;
+ struct object_id oid;
+ struct lock_file lock = LOCK_INIT;
+ struct tree_desc desc;
+ struct tree *tree;
+ struct unpack_trees_options unpack_tree_opts;
+ int ret = 0;
+
+ if (repo_hold_locked_index(r, &lock, LOCK_REPORT_ON_ERROR) < 0)
+ return -1;
+
+ if (len == 10 && !strncmp("[new root]", name, len)) {
+ if (!opts->have_squash_onto) {
+ const char *hex;
+ if (commit_tree("", 0, the_hash_algo->empty_tree,
+ NULL, &opts->squash_onto,
+ NULL, NULL))
+ return error(_("writing fake root commit"));
+ opts->have_squash_onto = 1;
+ hex = oid_to_hex(&opts->squash_onto);
+ if (write_message(hex, strlen(hex),
+ rebase_path_squash_onto(), 0))
+ return error(_("writing squash-onto"));
+ }
+ oidcpy(&oid, &opts->squash_onto);
+ } else {
+ int i;
+
+ /* Determine the length of the label */
+ for (i = 0; i < len; i++)
+ if (isspace(name[i]))
+ break;
+ len = i;
+
+ strbuf_addf(&ref_name, "refs/rewritten/%.*s", len, name);
+ if (get_oid(ref_name.buf, &oid) &&
+ get_oid(ref_name.buf + strlen("refs/rewritten/"), &oid)) {
+ error(_("could not read '%s'"), ref_name.buf);
+ rollback_lock_file(&lock);
+ strbuf_release(&ref_name);
+ return -1;
+ }
+ }
+
+ memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts));
+ setup_unpack_trees_porcelain(&unpack_tree_opts, "reset");
+ unpack_tree_opts.head_idx = 1;
+ unpack_tree_opts.src_index = r->index;
+ unpack_tree_opts.dst_index = r->index;
+ unpack_tree_opts.fn = oneway_merge;
+ unpack_tree_opts.merge = 1;
+ unpack_tree_opts.update = 1;
+
+ if (repo_read_index_unmerged(r)) {
+ rollback_lock_file(&lock);
+ strbuf_release(&ref_name);
+ return error_resolve_conflict(_(action_name(opts)));
+ }
+
+ if (!fill_tree_descriptor(r, &desc, &oid)) {
+ error(_("failed to find tree of %s"), oid_to_hex(&oid));
+ rollback_lock_file(&lock);
+ free((void *)desc.buffer);
+ strbuf_release(&ref_name);
+ return -1;
+ }
+
+ if (unpack_trees(1, &desc, &unpack_tree_opts)) {
+ rollback_lock_file(&lock);
+ free((void *)desc.buffer);
+ strbuf_release(&ref_name);
+ return -1;
+ }
+
+ tree = parse_tree_indirect(&oid);
+ prime_cache_tree(r, r->index, tree);
+
+ if (write_locked_index(r->index, &lock, COMMIT_LOCK) < 0)
+ ret = error(_("could not write index"));
+ free((void *)desc.buffer);
+
+ if (!ret)
+ ret = update_ref(reflog_message(opts, "reset", "'%.*s'",
+ len, name), "HEAD", &oid,
+ NULL, 0, UPDATE_REFS_MSG_ON_ERR);
+
+ strbuf_release(&ref_name);
+ return ret;
+}
+
+static struct commit *lookup_label(const char *label, int len,
+ struct strbuf *buf)
+{
+ struct commit *commit;
+
+ strbuf_reset(buf);
+ strbuf_addf(buf, "refs/rewritten/%.*s", len, label);
+ commit = lookup_commit_reference_by_name(buf->buf);
+ if (!commit) {
+ /* fall back to non-rewritten ref or commit */
+ strbuf_splice(buf, 0, strlen("refs/rewritten/"), "", 0);
+ commit = lookup_commit_reference_by_name(buf->buf);
+ }
+
+ if (!commit)
+ error(_("could not resolve '%s'"), buf->buf);
+
+ return commit;
+}
+
+static int do_merge(struct repository *r,
+ struct commit *commit,
+ const char *arg, int arg_len,
+ int flags, struct replay_opts *opts)
+{
+ int run_commit_flags = (flags & TODO_EDIT_MERGE_MSG) ?
+ EDIT_MSG | VERIFY_MSG : 0;
+ struct strbuf ref_name = STRBUF_INIT;
+ struct commit *head_commit, *merge_commit, *i;
+ struct commit_list *bases, *j, *reversed = NULL;
+ struct commit_list *to_merge = NULL, **tail = &to_merge;
+ const char *strategy = !opts->xopts_nr &&
+ (!opts->strategy || !strcmp(opts->strategy, "recursive")) ?
+ NULL : opts->strategy;
+ struct merge_options o;
+ int merge_arg_len, oneline_offset, can_fast_forward, ret, k;
+ static struct lock_file lock;
+ const char *p;
+
+ if (repo_hold_locked_index(r, &lock, LOCK_REPORT_ON_ERROR) < 0) {
+ ret = -1;
+ goto leave_merge;
+ }
+
+ head_commit = lookup_commit_reference_by_name("HEAD");
+ if (!head_commit) {
+ ret = error(_("cannot merge without a current revision"));
+ goto leave_merge;
+ }
+
+ /*
+ * For octopus merges, the arg starts with the list of revisions to be
+ * merged. The list is optionally followed by '#' and the oneline.
+ */
+ merge_arg_len = oneline_offset = arg_len;
+ for (p = arg; p - arg < arg_len; p += strspn(p, " \t\n")) {
+ if (!*p)
+ break;
+ if (*p == '#' && (!p[1] || isspace(p[1]))) {
+ p += 1 + strspn(p + 1, " \t\n");
+ oneline_offset = p - arg;
+ break;
+ }
+ k = strcspn(p, " \t\n");
+ if (!k)
+ continue;
+ merge_commit = lookup_label(p, k, &ref_name);
+ if (!merge_commit) {
+ ret = error(_("unable to parse '%.*s'"), k, p);
+ goto leave_merge;
+ }
+ tail = &commit_list_insert(merge_commit, tail)->next;
+ p += k;
+ merge_arg_len = p - arg;
+ }
+
+ if (!to_merge) {
+ ret = error(_("nothing to merge: '%.*s'"), arg_len, arg);
+ goto leave_merge;
+ }
+
+ if (opts->have_squash_onto &&
+ oideq(&head_commit->object.oid, &opts->squash_onto)) {
+ /*
+ * When the user tells us to "merge" something into a
+ * "[new root]", let's simply fast-forward to the merge head.
+ */
+ rollback_lock_file(&lock);
+ if (to_merge->next)
+ ret = error(_("octopus merge cannot be executed on "
+ "top of a [new root]"));
+ else
+ ret = fast_forward_to(r, &to_merge->item->object.oid,
+ &head_commit->object.oid, 0,
+ opts);
+ goto leave_merge;
+ }
+
+ if (commit) {
+ const char *encoding = get_commit_output_encoding();
+ const char *message = logmsg_reencode(commit, NULL, encoding);
+ const char *body;
+ int len;
+
+ if (!message) {
+ ret = error(_("could not get commit message of '%s'"),
+ oid_to_hex(&commit->object.oid));
+ goto leave_merge;
+ }
+ write_author_script(message);
+ find_commit_subject(message, &body);
+ len = strlen(body);
+ ret = write_message(body, len, git_path_merge_msg(r), 0);
+ unuse_commit_buffer(commit, message);
+ if (ret) {
+ error_errno(_("could not write '%s'"),
+ git_path_merge_msg(r));
+ goto leave_merge;
+ }
+ } else {
+ struct strbuf buf = STRBUF_INIT;
+ int len;
+
+ strbuf_addf(&buf, "author %s", git_author_info(0));
+ write_author_script(buf.buf);
+ strbuf_reset(&buf);
+
+ if (oneline_offset < arg_len) {
+ p = arg + oneline_offset;
+ len = arg_len - oneline_offset;
+ } else {
+ strbuf_addf(&buf, "Merge %s '%.*s'",
+ to_merge->next ? "branches" : "branch",
+ merge_arg_len, arg);
+ p = buf.buf;
+ len = buf.len;
+ }
+
+ ret = write_message(p, len, git_path_merge_msg(r), 0);
+ strbuf_release(&buf);
+ if (ret) {
+ error_errno(_("could not write '%s'"),
+ git_path_merge_msg(r));
+ goto leave_merge;
+ }
+ }
+
+ /*
+ * If HEAD is not identical to the first parent of the original merge
+ * commit, we cannot fast-forward.
+ */
+ can_fast_forward = opts->allow_ff && commit && commit->parents &&
+ oideq(&commit->parents->item->object.oid,
+ &head_commit->object.oid);
+
+ /*
+ * If any merge head is different from the original one, we cannot
+ * fast-forward.
+ */
+ if (can_fast_forward) {
+ struct commit_list *p = commit->parents->next;
+
+ for (j = to_merge; j && p; j = j->next, p = p->next)
+ if (!oideq(&j->item->object.oid,
+ &p->item->object.oid)) {
+ can_fast_forward = 0;
+ break;
+ }
+ /*
+ * If the number of merge heads differs from the original merge
+ * commit, we cannot fast-forward.
+ */
+ if (j || p)
+ can_fast_forward = 0;
+ }
+
+ if (can_fast_forward) {
+ rollback_lock_file(&lock);
+ ret = fast_forward_to(r, &commit->object.oid,
+ &head_commit->object.oid, 0, opts);
+ if (flags & TODO_EDIT_MERGE_MSG) {
+ run_commit_flags |= AMEND_MSG;
+ goto fast_forward_edit;
+ }
+ goto leave_merge;
+ }
+
+ if (strategy || to_merge->next) {
+ /* Octopus merge */
+ struct child_process cmd = CHILD_PROCESS_INIT;
+
+ if (read_env_script(&cmd.env_array)) {
+ const char *gpg_opt = gpg_sign_opt_quoted(opts);
+
+ ret = error(_(staged_changes_advice), gpg_opt, gpg_opt);
+ goto leave_merge;
+ }
+
+ cmd.git_cmd = 1;
+ argv_array_push(&cmd.args, "merge");
+ argv_array_push(&cmd.args, "-s");
+ if (!strategy)
+ argv_array_push(&cmd.args, "octopus");
+ else {
+ argv_array_push(&cmd.args, strategy);
+ for (k = 0; k < opts->xopts_nr; k++)
+ argv_array_pushf(&cmd.args,
+ "-X%s", opts->xopts[k]);
+ }
+ argv_array_push(&cmd.args, "--no-edit");
+ argv_array_push(&cmd.args, "--no-ff");
+ argv_array_push(&cmd.args, "--no-log");
+ argv_array_push(&cmd.args, "--no-stat");
+ argv_array_push(&cmd.args, "-F");
+ argv_array_push(&cmd.args, git_path_merge_msg(r));
+ if (opts->gpg_sign)
+ argv_array_push(&cmd.args, opts->gpg_sign);
+
+ /* Add the tips to be merged */
+ for (j = to_merge; j; j = j->next)
+ argv_array_push(&cmd.args,
+ oid_to_hex(&j->item->object.oid));
+
+ strbuf_release(&ref_name);
+ unlink(git_path_cherry_pick_head(r));
+ rollback_lock_file(&lock);
+
+ rollback_lock_file(&lock);
+ ret = run_command(&cmd);
+
+ /* force re-reading of the cache */
+ if (!ret && (discard_index(r->index) < 0 ||
+ repo_read_index(r) < 0))
+ ret = error(_("could not read index"));
+ goto leave_merge;
+ }
+
+ merge_commit = to_merge->item;
+ bases = get_merge_bases(head_commit, merge_commit);
+ if (bases && oideq(&merge_commit->object.oid,
+ &bases->item->object.oid)) {
+ ret = 0;
+ /* skip merging an ancestor of HEAD */
+ goto leave_merge;
+ }
+
+ write_message(oid_to_hex(&merge_commit->object.oid), the_hash_algo->hexsz,
+ git_path_merge_head(r), 0);
+ write_message("no-ff", 5, git_path_merge_mode(r), 0);
+
+ for (j = bases; j; j = j->next)
+ commit_list_insert(j->item, &reversed);
+ free_commit_list(bases);
+
+ repo_read_index(r);
+ init_merge_options(&o, r);
+ o.branch1 = "HEAD";
+ o.branch2 = ref_name.buf;
+ o.buffer_output = 2;
+
+ ret = merge_recursive(&o, head_commit, merge_commit, reversed, &i);
+ if (ret <= 0)
+ fputs(o.obuf.buf, stdout);
+ strbuf_release(&o.obuf);
+ if (ret < 0) {
+ error(_("could not even attempt to merge '%.*s'"),
+ merge_arg_len, arg);
+ goto leave_merge;
+ }
+ /*
+ * The return value of merge_recursive() is 1 on clean, and 0 on
+ * unclean merge.
+ *
+ * Let's reverse that, so that do_merge() returns 0 upon success and
+ * 1 upon failed merge (keeping the return value -1 for the cases where
+ * we will want to reschedule the `merge` command).
+ */
+ ret = !ret;
+
+ if (r->index->cache_changed &&
+ write_locked_index(r->index, &lock, COMMIT_LOCK)) {
+ ret = error(_("merge: Unable to write new index file"));
+ goto leave_merge;
+ }
+
+ rollback_lock_file(&lock);
+ if (ret)
+ repo_rerere(r, opts->allow_rerere_auto);
+ else
+ /*
+ * In case of problems, we now want to return a positive
+ * value (a negative one would indicate that the `merge`
+ * command needs to be rescheduled).
+ */
+ fast_forward_edit:
+ ret = !!run_git_commit(r, git_path_merge_msg(r), opts,
+ run_commit_flags);
+
+leave_merge:
+ strbuf_release(&ref_name);
+ rollback_lock_file(&lock);
+ free_commit_list(to_merge);
+ return ret;
+}
+
+static int is_final_fixup(struct todo_list *todo_list)
+{
+ int i = todo_list->current;
+
+ if (!is_fixup(todo_list->items[i].command))
+ return 0;
+
+ while (++i < todo_list->nr)
+ if (is_fixup(todo_list->items[i].command))
+ return 0;
+ else if (!is_noop(todo_list->items[i].command))
+ break;
+ return 1;
+}
+
+static enum todo_command peek_command(struct todo_list *todo_list, int offset)
+{
+ int i;
+
+ for (i = todo_list->current + offset; i < todo_list->nr; i++)
+ if (!is_noop(todo_list->items[i].command))
+ return todo_list->items[i].command;
+
+ return -1;
+}
+
+static int apply_autostash(struct replay_opts *opts)
+{
+ struct strbuf stash_sha1 = STRBUF_INIT;
+ struct child_process child = CHILD_PROCESS_INIT;
+ int ret = 0;
+
+ if (!read_oneliner(&stash_sha1, rebase_path_autostash(), 1)) {
+ strbuf_release(&stash_sha1);
+ return 0;
+ }
+ strbuf_trim(&stash_sha1);
+
+ child.git_cmd = 1;
+ child.no_stdout = 1;
+ child.no_stderr = 1;
+ argv_array_push(&child.args, "stash");
+ argv_array_push(&child.args, "apply");
+ argv_array_push(&child.args, stash_sha1.buf);
+ if (!run_command(&child))
+ fprintf(stderr, _("Applied autostash.\n"));
+ else {
+ struct child_process store = CHILD_PROCESS_INIT;
+
+ store.git_cmd = 1;
+ argv_array_push(&store.args, "stash");
+ argv_array_push(&store.args, "store");
+ argv_array_push(&store.args, "-m");
+ argv_array_push(&store.args, "autostash");
+ argv_array_push(&store.args, "-q");
+ argv_array_push(&store.args, stash_sha1.buf);
+ if (run_command(&store))
+ ret = error(_("cannot store %s"), stash_sha1.buf);
+ else
+ fprintf(stderr,
+ _("Applying autostash resulted in conflicts.\n"
+ "Your changes are safe in the stash.\n"
+ "You can run \"git stash pop\" or"
+ " \"git stash drop\" at any time.\n"));
+ }
+
+ strbuf_release(&stash_sha1);
+ return ret;
+}
+
+static const char *reflog_message(struct replay_opts *opts,
+ const char *sub_action, const char *fmt, ...)
+{
+ va_list ap;
+ static struct strbuf buf = STRBUF_INIT;
+
+ va_start(ap, fmt);
+ strbuf_reset(&buf);
+ strbuf_addstr(&buf, action_name(opts));
+ if (sub_action)
+ strbuf_addf(&buf, " (%s)", sub_action);
+ if (fmt) {
+ strbuf_addstr(&buf, ": ");
+ strbuf_vaddf(&buf, fmt, ap);
+ }
+ va_end(ap);
+
+ return buf.buf;
+}
+
+static int run_git_checkout(struct repository *r, struct replay_opts *opts,
+ const char *commit, const char *action)
+{
+ struct child_process cmd = CHILD_PROCESS_INIT;
+ int ret;
+
+ cmd.git_cmd = 1;
+
+ argv_array_push(&cmd.args, "checkout");
+ argv_array_push(&cmd.args, commit);
+ argv_array_pushf(&cmd.env_array, GIT_REFLOG_ACTION "=%s", action);
+
+ if (opts->verbose)
+ ret = run_command(&cmd);
+ else
+ ret = run_command_silent_on_success(&cmd);
+
+ if (!ret)
+ discard_index(r->index);
+
+ return ret;
+}
+
+int prepare_branch_to_be_rebased(struct repository *r, struct replay_opts *opts,
+ const char *commit)
+{
+ const char *action;
+
+ if (commit && *commit) {
+ action = reflog_message(opts, "start", "checkout %s", commit);
+ if (run_git_checkout(r, opts, commit, action))
+ return error(_("could not checkout %s"), commit);
+ }
+
+ return 0;
+}
+
+static int checkout_onto(struct repository *r, struct replay_opts *opts,
+ const char *onto_name, const struct object_id *onto,
+ const char *orig_head)
+{
+ struct object_id oid;
+ const char *action = reflog_message(opts, "start", "checkout %s", onto_name);
+
+ if (get_oid(orig_head, &oid))
+ return error(_("%s: not a valid OID"), orig_head);
+
+ if (run_git_checkout(r, opts, oid_to_hex(onto), action)) {
+ apply_autostash(opts);
+ sequencer_remove_state(opts);
+ return error(_("could not detach HEAD"));
+ }
+
+ return update_ref(NULL, "ORIG_HEAD", &oid, NULL, 0, UPDATE_REFS_MSG_ON_ERR);
+}
+
+static int stopped_at_head(struct repository *r)
+{
+ struct object_id head;
+ struct commit *commit;
+ struct commit_message message;
+
+ if (get_oid("HEAD", &head) ||
+ !(commit = lookup_commit(r, &head)) ||
+ parse_commit(commit) || get_message(commit, &message))
+ fprintf(stderr, _("Stopped at HEAD\n"));
+ else {
+ fprintf(stderr, _("Stopped at %s\n"), message.label);
+ free_message(commit, &message);
+ }
+ return 0;
+
+}
+
+static const char rescheduled_advice[] =
+N_("Could not execute the todo command\n"
+"\n"
+" %.*s"
+"\n"
+"It has been rescheduled; To edit the command before continuing, please\n"
+"edit the todo list first:\n"
+"\n"
+" git rebase --edit-todo\n"
+" git rebase --continue\n");
+
+static int pick_commits(struct repository *r,
+ struct todo_list *todo_list,
+ struct replay_opts *opts)
+{
+ int res = 0, reschedule = 0;
+
+ setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
+ if (opts->allow_ff)
+ assert(!(opts->signoff || opts->no_commit ||
+ opts->record_origin || opts->edit));
+ if (read_and_refresh_cache(r, opts))
+ return -1;
+
+ while (todo_list->current < todo_list->nr) {
+ struct todo_item *item = todo_list->items + todo_list->current;
+ const char *arg = todo_item_get_arg(todo_list, item);
+ int check_todo = 0;
+
+ if (save_todo(todo_list, opts))
+ return -1;
+ if (is_rebase_i(opts)) {
+ if (item->command != TODO_COMMENT) {
+ FILE *f = fopen(rebase_path_msgnum(), "w");
+
+ todo_list->done_nr++;
+
+ if (f) {
+ fprintf(f, "%d\n", todo_list->done_nr);
+ fclose(f);
+ }
+ if (!opts->quiet)
+ fprintf(stderr, "Rebasing (%d/%d)%s",
+ todo_list->done_nr,
+ todo_list->total_nr,
+ opts->verbose ? "\n" : "\r");
+ }
+ unlink(rebase_path_message());
+ unlink(rebase_path_author_script());
+ unlink(rebase_path_stopped_sha());
+ unlink(rebase_path_amend());
+ unlink(git_path_merge_head(r));
+ delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF);
+
+ if (item->command == TODO_BREAK) {
+ if (!opts->verbose)
+ term_clear_line();
+ return stopped_at_head(r);
+ }
+ }
+ if (item->command <= TODO_SQUASH) {
+ if (is_rebase_i(opts))
+ setenv("GIT_REFLOG_ACTION", reflog_message(opts,
+ command_to_string(item->command), NULL),
+ 1);
+ res = do_pick_commit(r, item->command, item->commit,
+ opts, is_final_fixup(todo_list),
+ &check_todo);
+ if (is_rebase_i(opts) && res < 0) {
+ /* Reschedule */
+ advise(_(rescheduled_advice),
+ get_item_line_length(todo_list,
+ todo_list->current),
+ get_item_line(todo_list,
+ todo_list->current));
+ todo_list->current--;
+ if (save_todo(todo_list, opts))
+ return -1;
+ }
+ if (item->command == TODO_EDIT) {
+ struct commit *commit = item->commit;
+ if (!res) {
+ if (!opts->verbose)
+ term_clear_line();
+ fprintf(stderr,
+ _("Stopped at %s... %.*s\n"),
+ short_commit_name(commit),
+ item->arg_len, arg);
+ }
+ return error_with_patch(r, commit,
+ arg, item->arg_len, opts, res, !res);
+ }
+ if (is_rebase_i(opts) && !res)
+ record_in_rewritten(&item->commit->object.oid,
+ peek_command(todo_list, 1));
+ if (res && is_fixup(item->command)) {
+ if (res == 1)
+ intend_to_amend();
+ return error_failed_squash(r, item->commit, opts,
+ item->arg_len, arg);
+ } else if (res && is_rebase_i(opts) && item->commit) {
+ int to_amend = 0;
+ struct object_id oid;
+
+ /*
+ * If we are rewording and have either
+ * fast-forwarded already, or are about to
+ * create a new root commit, we want to amend,
+ * otherwise we do not.
+ */
+ if (item->command == TODO_REWORD &&
+ !get_oid("HEAD", &oid) &&
+ (oideq(&item->commit->object.oid, &oid) ||
+ (opts->have_squash_onto &&
+ oideq(&opts->squash_onto, &oid))))
+ to_amend = 1;
+
+ return res | error_with_patch(r, item->commit,
+ arg, item->arg_len, opts,
+ res, to_amend);
+ }
+ } else if (item->command == TODO_EXEC) {
+ char *end_of_arg = (char *)(arg + item->arg_len);
+ int saved = *end_of_arg;
+
+ if (!opts->verbose)
+ term_clear_line();
+ *end_of_arg = '\0';
+ res = do_exec(r, arg);
+ *end_of_arg = saved;
+
+ if (res) {
+ if (opts->reschedule_failed_exec)
+ reschedule = 1;
+ }
+ check_todo = 1;
+ } else if (item->command == TODO_LABEL) {
+ if ((res = do_label(r, arg, item->arg_len)))
+ reschedule = 1;
+ } else if (item->command == TODO_RESET) {
+ if ((res = do_reset(r, arg, item->arg_len, opts)))
+ reschedule = 1;
+ } else if (item->command == TODO_MERGE) {
+ if ((res = do_merge(r, item->commit,
+ arg, item->arg_len,
+ item->flags, opts)) < 0)
+ reschedule = 1;
+ else if (item->commit)
+ record_in_rewritten(&item->commit->object.oid,
+ peek_command(todo_list, 1));
+ if (res > 0)
+ /* failed with merge conflicts */
+ return error_with_patch(r, item->commit,
+ arg, item->arg_len,
+ opts, res, 0);
+ } else if (!is_noop(item->command))
+ return error(_("unknown command %d"), item->command);
+
+ if (reschedule) {
+ advise(_(rescheduled_advice),
+ get_item_line_length(todo_list,
+ todo_list->current),
+ get_item_line(todo_list, todo_list->current));
+ todo_list->current--;
+ if (save_todo(todo_list, opts))
+ return -1;
+ if (item->commit)
+ return error_with_patch(r,
+ item->commit,
+ arg, item->arg_len,
+ opts, res, 0);
+ } else if (is_rebase_i(opts) && check_todo && !res) {
+ struct stat st;
+
+ if (stat(get_todo_path(opts), &st)) {
+ res = error_errno(_("could not stat '%s'"),
+ get_todo_path(opts));
+ } else if (match_stat_data(&todo_list->stat, &st)) {
+ /* Reread the todo file if it has changed. */
+ todo_list_release(todo_list);
+ if (read_populate_todo(r, todo_list, opts))
+ res = -1; /* message was printed */
+ /* `current` will be incremented below */
+ todo_list->current = -1;
+ }
+ }
+
+ todo_list->current++;
+ if (res)
+ return res;
+ }
+
+ if (is_rebase_i(opts)) {
+ struct strbuf head_ref = STRBUF_INIT, buf = STRBUF_INIT;
+ struct stat st;
+
+ /* Stopped in the middle, as planned? */
+ if (todo_list->current < todo_list->nr)
+ return 0;
+
+ if (read_oneliner(&head_ref, rebase_path_head_name(), 0) &&
+ starts_with(head_ref.buf, "refs/")) {
+ const char *msg;
+ struct object_id head, orig;
+ int res;
+
+ if (get_oid("HEAD", &head)) {
+ res = error(_("cannot read HEAD"));
+cleanup_head_ref:
+ strbuf_release(&head_ref);
+ strbuf_release(&buf);
+ return res;
+ }
+ if (!read_oneliner(&buf, rebase_path_orig_head(), 0) ||
+ get_oid_hex(buf.buf, &orig)) {
+ res = error(_("could not read orig-head"));
+ goto cleanup_head_ref;
+ }
+ strbuf_reset(&buf);
+ if (!read_oneliner(&buf, rebase_path_onto(), 0)) {
+ res = error(_("could not read 'onto'"));
+ goto cleanup_head_ref;
+ }
+ msg = reflog_message(opts, "finish", "%s onto %s",
+ head_ref.buf, buf.buf);
+ if (update_ref(msg, head_ref.buf, &head, &orig,
+ REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR)) {
+ res = error(_("could not update %s"),
+ head_ref.buf);
+ goto cleanup_head_ref;
+ }
+ msg = reflog_message(opts, "finish", "returning to %s",
+ head_ref.buf);
+ if (create_symref("HEAD", head_ref.buf, msg)) {
+ res = error(_("could not update HEAD to %s"),
+ head_ref.buf);
+ goto cleanup_head_ref;
+ }
+ strbuf_reset(&buf);
+ }
+
+ if (opts->verbose) {
+ struct rev_info log_tree_opt;
+ struct object_id orig, head;
+
+ memset(&log_tree_opt, 0, sizeof(log_tree_opt));
+ repo_init_revisions(r, &log_tree_opt, NULL);
+ log_tree_opt.diff = 1;
+ log_tree_opt.diffopt.output_format =
+ DIFF_FORMAT_DIFFSTAT;
+ log_tree_opt.disable_stdin = 1;
+
+ if (read_oneliner(&buf, rebase_path_orig_head(), 0) &&
+ !get_oid(buf.buf, &orig) &&
+ !get_oid("HEAD", &head)) {
+ diff_tree_oid(&orig, &head, "",
+ &log_tree_opt.diffopt);
+ log_tree_diff_flush(&log_tree_opt);
+ }
+ }
+ flush_rewritten_pending();
+ if (!stat(rebase_path_rewritten_list(), &st) &&
+ st.st_size > 0) {
+ struct child_process child = CHILD_PROCESS_INIT;
+ const char *post_rewrite_hook =
+ find_hook("post-rewrite");
+
+ child.in = open(rebase_path_rewritten_list(), O_RDONLY);
+ child.git_cmd = 1;
+ argv_array_push(&child.args, "notes");
+ argv_array_push(&child.args, "copy");
+ argv_array_push(&child.args, "--for-rewrite=rebase");
+ /* we don't care if this copying failed */
+ run_command(&child);
+
+ if (post_rewrite_hook) {
+ struct child_process hook = CHILD_PROCESS_INIT;
+
+ hook.in = open(rebase_path_rewritten_list(),
+ O_RDONLY);
+ hook.stdout_to_stderr = 1;
+ hook.trace2_hook_name = "post-rewrite";
+ argv_array_push(&hook.args, post_rewrite_hook);
+ argv_array_push(&hook.args, "rebase");
+ /* we don't care if this hook failed */
+ run_command(&hook);
+ }
+ }
+ apply_autostash(opts);
+
+ if (!opts->quiet) {
+ if (!opts->verbose)
+ term_clear_line();
+ fprintf(stderr,
+ "Successfully rebased and updated %s.\n",
+ head_ref.buf);
+ }
+
+ strbuf_release(&buf);
+ strbuf_release(&head_ref);
+ }
+
+ /*
+ * Sequence of picks finished successfully; cleanup by
+ * removing the .git/sequencer directory
+ */
+ return sequencer_remove_state(opts);
+}
+
+static int continue_single_pick(struct repository *r)
+{
+ const char *argv[] = { "commit", NULL };
+
+ if (!file_exists(git_path_cherry_pick_head(r)) &&
+ !file_exists(git_path_revert_head(r)))
+ return error(_("no cherry-pick or revert in progress"));
+ return run_command_v_opt(argv, RUN_GIT_CMD);
+}
+
+static int commit_staged_changes(struct repository *r,
+ struct replay_opts *opts,
+ struct todo_list *todo_list)
+{
+ unsigned int flags = ALLOW_EMPTY | EDIT_MSG;
+ unsigned int final_fixup = 0, is_clean;
+
+ if (has_unstaged_changes(r, 1))
+ return error(_("cannot rebase: You have unstaged changes."));
+
+ is_clean = !has_uncommitted_changes(r, 0);
+
+ if (file_exists(rebase_path_amend())) {
+ struct strbuf rev = STRBUF_INIT;
+ struct object_id head, to_amend;
+
+ if (get_oid("HEAD", &head))
+ return error(_("cannot amend non-existing commit"));
+ if (!read_oneliner(&rev, rebase_path_amend(), 0))
+ return error(_("invalid file: '%s'"), rebase_path_amend());
+ if (get_oid_hex(rev.buf, &to_amend))
+ return error(_("invalid contents: '%s'"),
+ rebase_path_amend());
+ if (!is_clean && !oideq(&head, &to_amend))
+ return error(_("\nYou have uncommitted changes in your "
+ "working tree. Please, commit them\n"
+ "first and then run 'git rebase "
+ "--continue' again."));
+ /*
+ * When skipping a failed fixup/squash, we need to edit the
+ * commit message, the current fixup list and count, and if it
+ * was the last fixup/squash in the chain, we need to clean up
+ * the commit message and if there was a squash, let the user
+ * edit it.
+ */
+ if (!is_clean || !opts->current_fixup_count)
+ ; /* this is not the final fixup */
+ else if (!oideq(&head, &to_amend) ||
+ !file_exists(rebase_path_stopped_sha())) {
+ /* was a final fixup or squash done manually? */
+ if (!is_fixup(peek_command(todo_list, 0))) {
+ unlink(rebase_path_fixup_msg());
+ unlink(rebase_path_squash_msg());
+ unlink(rebase_path_current_fixups());
+ strbuf_reset(&opts->current_fixups);
+ opts->current_fixup_count = 0;
+ }
+ } else {
+ /* we are in a fixup/squash chain */
+ const char *p = opts->current_fixups.buf;
+ int len = opts->current_fixups.len;
+
+ opts->current_fixup_count--;
+ if (!len)
+ BUG("Incorrect current_fixups:\n%s", p);
+ while (len && p[len - 1] != '\n')
+ len--;
+ strbuf_setlen(&opts->current_fixups, len);
+ if (write_message(p, len, rebase_path_current_fixups(),
+ 0) < 0)
+ return error(_("could not write file: '%s'"),
+ rebase_path_current_fixups());
+
+ /*
+ * If a fixup/squash in a fixup/squash chain failed, the
+ * commit message is already correct, no need to commit
+ * it again.
+ *
+ * Only if it is the final command in the fixup/squash
+ * chain, and only if the chain is longer than a single
+ * fixup/squash command (which was just skipped), do we
+ * actually need to re-commit with a cleaned up commit
+ * message.
+ */
+ if (opts->current_fixup_count > 0 &&
+ !is_fixup(peek_command(todo_list, 0))) {
+ final_fixup = 1;
+ /*
+ * If there was not a single "squash" in the
+ * chain, we only need to clean up the commit
+ * message, no need to bother the user with
+ * opening the commit message in the editor.
+ */
+ if (!starts_with(p, "squash ") &&
+ !strstr(p, "\nsquash "))
+ flags = (flags & ~EDIT_MSG) | CLEANUP_MSG;
+ } else if (is_fixup(peek_command(todo_list, 0))) {
+ /*
+ * We need to update the squash message to skip
+ * the latest commit message.
+ */
+ struct commit *commit;
+ const char *path = rebase_path_squash_msg();
+ const char *encoding = get_commit_output_encoding();
+
+ if (parse_head(r, &commit) ||
+ !(p = logmsg_reencode(commit, NULL, encoding)) ||
+ write_message(p, strlen(p), path, 0)) {
+ unuse_commit_buffer(commit, p);
+ return error(_("could not write file: "
+ "'%s'"), path);
+ }
+ unuse_commit_buffer(commit, p);
+ }
+ }
+
+ strbuf_release(&rev);
+ flags |= AMEND_MSG;
+ }
+
+ if (is_clean) {
+ const char *cherry_pick_head = git_path_cherry_pick_head(r);
+
+ if (file_exists(cherry_pick_head) && unlink(cherry_pick_head))
+ return error(_("could not remove CHERRY_PICK_HEAD"));
+ if (!final_fixup)
+ return 0;
+ }
+
+ if (run_git_commit(r, final_fixup ? NULL : rebase_path_message(),
+ opts, flags))
+ return error(_("could not commit staged changes."));
+ unlink(rebase_path_amend());
+ unlink(git_path_merge_head(r));
+ if (final_fixup) {
+ unlink(rebase_path_fixup_msg());
+ unlink(rebase_path_squash_msg());
+ }
+ if (opts->current_fixup_count > 0) {
+ /*
+ * Whether final fixup or not, we just cleaned up the commit
+ * message...
+ */
+ unlink(rebase_path_current_fixups());
+ strbuf_reset(&opts->current_fixups);
+ opts->current_fixup_count = 0;
+ }
return 0;
}
-static void read_populate_opts(struct replay_opts **opts_ptr)
-{
- if (!file_exists(git_path_opts_file()))
- return;
- if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts_ptr) < 0)
- die(_("Malformed options sheet: %s"), git_path_opts_file());
+int sequencer_continue(struct repository *r, struct replay_opts *opts)
+{
+ struct todo_list todo_list = TODO_LIST_INIT;
+ int res;
+
+ if (read_and_refresh_cache(r, opts))
+ return -1;
+
+ if (read_populate_opts(opts))
+ return -1;
+ if (is_rebase_i(opts)) {
+ if ((res = read_populate_todo(r, &todo_list, opts)))
+ goto release_todo_list;
+ if (commit_staged_changes(r, opts, &todo_list)) {
+ res = -1;
+ goto release_todo_list;
+ }
+ } else if (!file_exists(get_todo_path(opts)))
+ return continue_single_pick(r);
+ else if ((res = read_populate_todo(r, &todo_list, opts)))
+ goto release_todo_list;
+
+ if (!is_rebase_i(opts)) {
+ /* Verify that the conflict has been resolved */
+ if (file_exists(git_path_cherry_pick_head(r)) ||
+ file_exists(git_path_revert_head(r))) {
+ res = continue_single_pick(r);
+ if (res)
+ goto release_todo_list;
+ }
+ if (index_differs_from(r, "HEAD", NULL, 0)) {
+ res = error_dirty_index(r, opts);
+ goto release_todo_list;
+ }
+ todo_list.current++;
+ } else if (file_exists(rebase_path_stopped_sha())) {
+ struct strbuf buf = STRBUF_INIT;
+ struct object_id oid;
+
+ if (read_oneliner(&buf, rebase_path_stopped_sha(), 1) &&
+ !get_oid_committish(buf.buf, &oid))
+ record_in_rewritten(&oid, peek_command(&todo_list, 0));
+ strbuf_release(&buf);
+ }
+
+ res = pick_commits(r, &todo_list, opts);
+release_todo_list:
+ todo_list_release(&todo_list);
+ return res;
+}
+
+static int single_pick(struct repository *r,
+ struct commit *cmit,
+ struct replay_opts *opts)
+{
+ int check_todo;
+
+ setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
+ return do_pick_commit(r, opts->action == REPLAY_PICK ?
+ TODO_PICK : TODO_REVERT, cmit, opts, 0,
+ &check_todo);
+}
+
+int sequencer_pick_revisions(struct repository *r,
+ struct replay_opts *opts)
+{
+ struct todo_list todo_list = TODO_LIST_INIT;
+ struct object_id oid;
+ int i, res;
+
+ assert(opts->revs);
+ if (read_and_refresh_cache(r, opts))
+ return -1;
+
+ for (i = 0; i < opts->revs->pending.nr; i++) {
+ struct object_id oid;
+ const char *name = opts->revs->pending.objects[i].name;
+
+ /* This happens when using --stdin. */
+ if (!strlen(name))
+ continue;
+
+ if (!get_oid(name, &oid)) {
+ if (!lookup_commit_reference_gently(r, &oid, 1)) {
+ enum object_type type = oid_object_info(r,
+ &oid,
+ NULL);
+ return error(_("%s: can't cherry-pick a %s"),
+ name, type_name(type));
+ }
+ } else
+ return error(_("%s: bad revision"), name);
+ }
+
+ /*
+ * If we were called as "git cherry-pick <commit>", just
+ * cherry-pick/revert it, set CHERRY_PICK_HEAD /
+ * REVERT_HEAD, and don't touch the sequencer state.
+ * This means it is possible to cherry-pick in the middle
+ * of a cherry-pick sequence.
+ */
+ if (opts->revs->cmdline.nr == 1 &&
+ opts->revs->cmdline.rev->whence == REV_CMD_REV &&
+ opts->revs->no_walk &&
+ !opts->revs->cmdline.rev->flags) {
+ struct commit *cmit;
+ if (prepare_revision_walk(opts->revs))
+ return error(_("revision walk setup failed"));
+ cmit = get_revision(opts->revs);
+ if (!cmit)
+ return error(_("empty commit set passed"));
+ if (get_revision(opts->revs))
+ BUG("unexpected extra commit from walk");
+ return single_pick(r, cmit, opts);
+ }
+
+ /*
+ * Start a new cherry-pick/ revert sequence; but
+ * first, make sure that an existing one isn't in
+ * progress
+ */
+
+ if (walk_revs_populate_todo(&todo_list, opts) ||
+ create_seq_dir(r) < 0)
+ return -1;
+ if (get_oid("HEAD", &oid) && (opts->action == REPLAY_REVERT))
+ return error(_("can't revert as initial commit"));
+ if (save_head(oid_to_hex(&oid)))
+ return -1;
+ if (save_opts(opts))
+ return -1;
+ update_abort_safety_file();
+ res = pick_commits(r, &todo_list, opts);
+ todo_list_release(&todo_list);
+ return res;
+}
+
+void append_signoff(struct strbuf *msgbuf, size_t ignore_footer, unsigned flag)
+{
+ unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP;
+ struct strbuf sob = STRBUF_INIT;
+ int has_footer;
+
+ strbuf_addstr(&sob, sign_off_header);
+ strbuf_addstr(&sob, fmt_name(WANT_COMMITTER_IDENT));
+ strbuf_addch(&sob, '\n');
+
+ if (!ignore_footer)
+ strbuf_complete_line(msgbuf);
+
+ /*
+ * If the whole message buffer is equal to the sob, pretend that we
+ * found a conforming footer with a matching sob
+ */
+ if (msgbuf->len - ignore_footer == sob.len &&
+ !strncmp(msgbuf->buf, sob.buf, sob.len))
+ has_footer = 3;
+ else
+ has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer);
+
+ if (!has_footer) {
+ const char *append_newlines = NULL;
+ size_t len = msgbuf->len - ignore_footer;
+
+ if (!len) {
+ /*
+ * The buffer is completely empty. Leave foom for
+ * the title and body to be filled in by the user.
+ */
+ append_newlines = "\n\n";
+ } else if (len == 1) {
+ /*
+ * Buffer contains a single newline. Add another
+ * so that we leave room for the title and body.
+ */
+ append_newlines = "\n";
+ } else if (msgbuf->buf[len - 2] != '\n') {
+ /*
+ * Buffer ends with a single newline. Add another
+ * so that there is an empty line between the message
+ * body and the sob.
+ */
+ append_newlines = "\n";
+ } /* else, the buffer already ends with two newlines. */
+
+ if (append_newlines)
+ strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
+ append_newlines, strlen(append_newlines));
+ }
+
+ if (has_footer != 3 && (!no_dup_sob || has_footer != 2))
+ strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
+ sob.buf, sob.len);
+
+ strbuf_release(&sob);
+}
+
+struct labels_entry {
+ struct hashmap_entry entry;
+ char label[FLEX_ARRAY];
+};
+
+static int labels_cmp(const void *fndata, const struct hashmap_entry *eptr,
+ const struct hashmap_entry *entry_or_key, const void *key)
+{
+ const struct labels_entry *a, *b;
+
+ a = container_of(eptr, const struct labels_entry, entry);
+ b = container_of(entry_or_key, const struct labels_entry, entry);
+
+ return key ? strcmp(a->label, key) : strcmp(a->label, b->label);
+}
+
+struct string_entry {
+ struct oidmap_entry entry;
+ char string[FLEX_ARRAY];
+};
+
+struct label_state {
+ struct oidmap commit2label;
+ struct hashmap labels;
+ struct strbuf buf;
+};
+
+static const char *label_oid(struct object_id *oid, const char *label,
+ struct label_state *state)
+{
+ struct labels_entry *labels_entry;
+ struct string_entry *string_entry;
+ struct object_id dummy;
+ int i;
+
+ string_entry = oidmap_get(&state->commit2label, oid);
+ if (string_entry)
+ return string_entry->string;
+
+ /*
+ * For "uninteresting" commits, i.e. commits that are not to be
+ * rebased, and which can therefore not be labeled, we use a unique
+ * abbreviation of the commit name. This is slightly more complicated
+ * than calling find_unique_abbrev() because we also need to make
+ * sure that the abbreviation does not conflict with any other
+ * label.
+ *
+ * We disallow "interesting" commits to be labeled by a string that
+ * is a valid full-length hash, to ensure that we always can find an
+ * abbreviation for any uninteresting commit's names that does not
+ * clash with any other label.
+ */
+ strbuf_reset(&state->buf);
+ if (!label) {
+ char *p;
+
+ strbuf_grow(&state->buf, GIT_MAX_HEXSZ);
+ label = p = state->buf.buf;
+
+ find_unique_abbrev_r(p, oid, default_abbrev);
+
+ /*
+ * We may need to extend the abbreviated hash so that there is
+ * no conflicting label.
+ */
+ if (hashmap_get_from_hash(&state->labels, strihash(p), p)) {
+ size_t i = strlen(p) + 1;
+
+ oid_to_hex_r(p, oid);
+ for (; i < the_hash_algo->hexsz; i++) {
+ char save = p[i];
+ p[i] = '\0';
+ if (!hashmap_get_from_hash(&state->labels,
+ strihash(p), p))
+ break;
+ p[i] = save;
+ }
+ }
+ } else {
+ struct strbuf *buf = &state->buf;
+
+ /*
+ * Sanitize labels by replacing non-alpha-numeric characters
+ * (including white-space ones) by dashes, as they might be
+ * illegal in file names (and hence in ref names).
+ *
+ * Note that we retain non-ASCII UTF-8 characters (identified
+ * via the most significant bit). They should be all acceptable
+ * in file names. We do not validate the UTF-8 here, that's not
+ * the job of this function.
+ */
+ for (; *label; label++)
+ if ((*label & 0x80) || isalnum(*label))
+ strbuf_addch(buf, *label);
+ /* avoid leading dash and double-dashes */
+ else if (buf->len && buf->buf[buf->len - 1] != '-')
+ strbuf_addch(buf, '-');
+ if (!buf->len) {
+ strbuf_addstr(buf, "rev-");
+ strbuf_add_unique_abbrev(buf, oid, default_abbrev);
+ }
+ label = buf->buf;
+
+ if ((buf->len == the_hash_algo->hexsz &&
+ !get_oid_hex(label, &dummy)) ||
+ (buf->len == 1 && *label == '#') ||
+ hashmap_get_from_hash(&state->labels,
+ strihash(label), label)) {
+ /*
+ * If the label already exists, or if the label is a
+ * valid full OID, or the label is a '#' (which we use
+ * as a separator between merge heads and oneline), we
+ * append a dash and a number to make it unique.
+ */
+ size_t len = buf->len;
+
+ for (i = 2; ; i++) {
+ strbuf_setlen(buf, len);
+ strbuf_addf(buf, "-%d", i);
+ if (!hashmap_get_from_hash(&state->labels,
+ strihash(buf->buf),
+ buf->buf))
+ break;
+ }
+
+ label = buf->buf;
+ }
+ }
+
+ FLEX_ALLOC_STR(labels_entry, label, label);
+ hashmap_entry_init(&labels_entry->entry, strihash(label));
+ hashmap_add(&state->labels, &labels_entry->entry);
+
+ FLEX_ALLOC_STR(string_entry, string, label);
+ oidcpy(&string_entry->entry.oid, oid);
+ oidmap_put(&state->commit2label, string_entry);
+
+ return string_entry->string;
+}
+
+static int make_script_with_merges(struct pretty_print_context *pp,
+ struct rev_info *revs, struct strbuf *out,
+ unsigned flags)
+{
+ int keep_empty = flags & TODO_LIST_KEEP_EMPTY;
+ int rebase_cousins = flags & TODO_LIST_REBASE_COUSINS;
+ int root_with_onto = flags & TODO_LIST_ROOT_WITH_ONTO;
+ struct strbuf buf = STRBUF_INIT, oneline = STRBUF_INIT;
+ struct strbuf label = STRBUF_INIT;
+ struct commit_list *commits = NULL, **tail = &commits, *iter;
+ struct commit_list *tips = NULL, **tips_tail = &tips;
+ struct commit *commit;
+ struct oidmap commit2todo = OIDMAP_INIT;
+ struct string_entry *entry;
+ struct oidset interesting = OIDSET_INIT, child_seen = OIDSET_INIT,
+ shown = OIDSET_INIT;
+ struct label_state state = { OIDMAP_INIT, { NULL }, STRBUF_INIT };
+
+ int abbr = flags & TODO_LIST_ABBREVIATE_CMDS;
+ const char *cmd_pick = abbr ? "p" : "pick",
+ *cmd_label = abbr ? "l" : "label",
+ *cmd_reset = abbr ? "t" : "reset",
+ *cmd_merge = abbr ? "m" : "merge";
+
+ oidmap_init(&commit2todo, 0);
+ oidmap_init(&state.commit2label, 0);
+ hashmap_init(&state.labels, labels_cmp, NULL, 0);
+ strbuf_init(&state.buf, 32);
+
+ if (revs->cmdline.nr && (revs->cmdline.rev[0].flags & BOTTOM)) {
+ struct labels_entry *onto_label_entry;
+ struct object_id *oid = &revs->cmdline.rev[0].item->oid;
+ FLEX_ALLOC_STR(entry, string, "onto");
+ oidcpy(&entry->entry.oid, oid);
+ oidmap_put(&state.commit2label, entry);
+
+ FLEX_ALLOC_STR(onto_label_entry, label, "onto");
+ hashmap_entry_init(&onto_label_entry->entry, strihash("onto"));
+ hashmap_add(&state.labels, &onto_label_entry->entry);
+ }
+
+ /*
+ * First phase:
+ * - get onelines for all commits
+ * - gather all branch tips (i.e. 2nd or later parents of merges)
+ * - label all branch tips
+ */
+ while ((commit = get_revision(revs))) {
+ struct commit_list *to_merge;
+ const char *p1, *p2;
+ struct object_id *oid;
+ int is_empty;
+
+ tail = &commit_list_insert(commit, tail)->next;
+ oidset_insert(&interesting, &commit->object.oid);
+
+ is_empty = is_original_commit_empty(commit);
+ if (!is_empty && (commit->object.flags & PATCHSAME))
+ continue;
+
+ strbuf_reset(&oneline);
+ pretty_print_commit(pp, commit, &oneline);
+
+ to_merge = commit->parents ? commit->parents->next : NULL;
+ if (!to_merge) {
+ /* non-merge commit: easy case */
+ strbuf_reset(&buf);
+ if (!keep_empty && is_empty)
+ strbuf_addf(&buf, "%c ", comment_line_char);
+ strbuf_addf(&buf, "%s %s %s", cmd_pick,
+ oid_to_hex(&commit->object.oid),
+ oneline.buf);
+
+ FLEX_ALLOC_STR(entry, string, buf.buf);
+ oidcpy(&entry->entry.oid, &commit->object.oid);
+ oidmap_put(&commit2todo, entry);
+
+ continue;
+ }
+
+ /* Create a label */
+ strbuf_reset(&label);
+ if (skip_prefix(oneline.buf, "Merge ", &p1) &&
+ (p1 = strchr(p1, '\'')) &&
+ (p2 = strchr(++p1, '\'')))
+ strbuf_add(&label, p1, p2 - p1);
+ else if (skip_prefix(oneline.buf, "Merge pull request ",
+ &p1) &&
+ (p1 = strstr(p1, " from ")))
+ strbuf_addstr(&label, p1 + strlen(" from "));
+ else
+ strbuf_addbuf(&label, &oneline);
+
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "%s -C %s",
+ cmd_merge, oid_to_hex(&commit->object.oid));
+
+ /* label the tips of merged branches */
+ for (; to_merge; to_merge = to_merge->next) {
+ oid = &to_merge->item->object.oid;
+ strbuf_addch(&buf, ' ');
+
+ if (!oidset_contains(&interesting, oid)) {
+ strbuf_addstr(&buf, label_oid(oid, NULL,
+ &state));
+ continue;
+ }
+
+ tips_tail = &commit_list_insert(to_merge->item,
+ tips_tail)->next;
+
+ strbuf_addstr(&buf, label_oid(oid, label.buf, &state));
+ }
+ strbuf_addf(&buf, " # %s", oneline.buf);
+
+ FLEX_ALLOC_STR(entry, string, buf.buf);
+ oidcpy(&entry->entry.oid, &commit->object.oid);
+ oidmap_put(&commit2todo, entry);
+ }
+
+ /*
+ * Second phase:
+ * - label branch points
+ * - add HEAD to the branch tips
+ */
+ for (iter = commits; iter; iter = iter->next) {
+ struct commit_list *parent = iter->item->parents;
+ for (; parent; parent = parent->next) {
+ struct object_id *oid = &parent->item->object.oid;
+ if (!oidset_contains(&interesting, oid))
+ continue;
+ if (oidset_insert(&child_seen, oid))
+ label_oid(oid, "branch-point", &state);
+ }
+
+ /* Add HEAD as implicit "tip of branch" */
+ if (!iter->next)
+ tips_tail = &commit_list_insert(iter->item,
+ tips_tail)->next;
+ }
+
+ /*
+ * Third phase: output the todo list. This is a bit tricky, as we
+ * want to avoid jumping back and forth between revisions. To
+ * accomplish that goal, we walk backwards from the branch tips,
+ * gathering commits not yet shown, reversing the list on the fly,
+ * then outputting that list (labeling revisions as needed).
+ */
+ strbuf_addf(out, "%s onto\n", cmd_label);
+ for (iter = tips; iter; iter = iter->next) {
+ struct commit_list *list = NULL, *iter2;
+
+ commit = iter->item;
+ if (oidset_contains(&shown, &commit->object.oid))
+ continue;
+ entry = oidmap_get(&state.commit2label, &commit->object.oid);
+
+ if (entry)
+ strbuf_addf(out, "\n%c Branch %s\n", comment_line_char, entry->string);
+ else
+ strbuf_addch(out, '\n');
+
+ while (oidset_contains(&interesting, &commit->object.oid) &&
+ !oidset_contains(&shown, &commit->object.oid)) {
+ commit_list_insert(commit, &list);
+ if (!commit->parents) {
+ commit = NULL;
+ break;
+ }
+ commit = commit->parents->item;
+ }
+
+ if (!commit)
+ strbuf_addf(out, "%s %s\n", cmd_reset,
+ rebase_cousins || root_with_onto ?
+ "onto" : "[new root]");
+ else {
+ const char *to = NULL;
+
+ entry = oidmap_get(&state.commit2label,
+ &commit->object.oid);
+ if (entry)
+ to = entry->string;
+ else if (!rebase_cousins)
+ to = label_oid(&commit->object.oid, NULL,
+ &state);
+
+ if (!to || !strcmp(to, "onto"))
+ strbuf_addf(out, "%s onto\n", cmd_reset);
+ else {
+ strbuf_reset(&oneline);
+ pretty_print_commit(pp, commit, &oneline);
+ strbuf_addf(out, "%s %s # %s\n",
+ cmd_reset, to, oneline.buf);
+ }
+ }
+
+ for (iter2 = list; iter2; iter2 = iter2->next) {
+ struct object_id *oid = &iter2->item->object.oid;
+ entry = oidmap_get(&commit2todo, oid);
+ /* only show if not already upstream */
+ if (entry)
+ strbuf_addf(out, "%s\n", entry->string);
+ entry = oidmap_get(&state.commit2label, oid);
+ if (entry)
+ strbuf_addf(out, "%s %s\n",
+ cmd_label, entry->string);
+ oidset_insert(&shown, oid);
+ }
+
+ free_commit_list(list);
+ }
+
+ free_commit_list(commits);
+ free_commit_list(tips);
+
+ strbuf_release(&label);
+ strbuf_release(&oneline);
+ strbuf_release(&buf);
+
+ oidmap_free(&commit2todo, 1);
+ oidmap_free(&state.commit2label, 1);
+ hashmap_free_entries(&state.labels, struct labels_entry, entry);
+ strbuf_release(&state.buf);
+
+ return 0;
}
-static void walk_revs_populate_todo(struct commit_list **todo_list,
- struct replay_opts *opts)
+int sequencer_make_script(struct repository *r, struct strbuf *out, int argc,
+ const char **argv, unsigned flags)
{
+ char *format = NULL;
+ struct pretty_print_context pp = {0};
+ struct rev_info revs;
struct commit *commit;
- struct commit_list **next;
+ int keep_empty = flags & TODO_LIST_KEEP_EMPTY;
+ const char *insn = flags & TODO_LIST_ABBREVIATE_CMDS ? "p" : "pick";
+ int rebase_merges = flags & TODO_LIST_REBASE_MERGES;
+
+ repo_init_revisions(r, &revs, NULL);
+ revs.verbose_header = 1;
+ if (!rebase_merges)
+ revs.max_parents = 1;
+ revs.cherry_mark = 1;
+ revs.limited = 1;
+ revs.reverse = 1;
+ revs.right_only = 1;
+ revs.sort_order = REV_SORT_IN_GRAPH_ORDER;
+ revs.topo_order = 1;
+
+ revs.pretty_given = 1;
+ git_config_get_string("rebase.instructionFormat", &format);
+ if (!format || !*format) {
+ free(format);
+ format = xstrdup("%s");
+ }
+ get_commit_format(format, &revs);
+ free(format);
+ pp.fmt = revs.commit_format;
+ pp.output_encoding = get_log_output_encoding();
- prepare_revs(opts);
+ if (setup_revisions(argc, argv, &revs, NULL) > 1)
+ return error(_("make_script: unhandled options"));
- next = todo_list;
- while ((commit = get_revision(opts->revs)))
- next = commit_list_append(commit, next);
-}
+ if (prepare_revision_walk(&revs) < 0)
+ return error(_("make_script: error preparing revisions"));
-static int create_seq_dir(void)
-{
- if (file_exists(git_path_seq_dir())) {
- error(_("a cherry-pick or revert is already in progress"));
- advise(_("try \"git cherry-pick (--continue | --quit | --abort)\""));
- return -1;
+ if (rebase_merges)
+ return make_script_with_merges(&pp, &revs, out, flags);
+
+ while ((commit = get_revision(&revs))) {
+ int is_empty = is_original_commit_empty(commit);
+
+ if (!is_empty && (commit->object.flags & PATCHSAME))
+ continue;
+ if (!keep_empty && is_empty)
+ strbuf_addf(out, "%c ", comment_line_char);
+ strbuf_addf(out, "%s %s ", insn,
+ oid_to_hex(&commit->object.oid));
+ pretty_print_commit(&pp, commit, out);
+ strbuf_addch(out, '\n');
}
- else if (mkdir(git_path_seq_dir(), 0777) < 0)
- die_errno(_("Could not create sequencer directory %s"),
- git_path_seq_dir());
return 0;
}
-static void save_head(const char *head)
+/*
+ * Add commands after pick and (series of) squash/fixup commands
+ * in the todo list.
+ */
+void todo_list_add_exec_commands(struct todo_list *todo_list,
+ struct string_list *commands)
{
- static struct lock_file head_lock;
- struct strbuf buf = STRBUF_INIT;
- int fd;
+ 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;
- fd = hold_lock_file_for_update(&head_lock, git_path_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"), git_path_head_file());
- if (commit_lock_file(&head_lock) < 0)
- die(_("Error wrapping up %s."), git_path_head_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);
-static int reset_for_rollback(const unsigned char *sha1)
-{
- const char *argv[4]; /* reset --merge <arg> + NULL */
- argv[0] = "reset";
- argv[1] = "--merge";
- argv[2] = sha1_to_hex(sha1);
- argv[3] = NULL;
- return run_command_v_opt(argv, RUN_GIT_CMD);
-}
+ strbuf_addstr(buf, commands->items[i].string);
+ strbuf_addch(buf, '\n');
-static int rollback_single_pick(void)
-{
- unsigned char head_sha1[20];
+ 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 ");
- if (!file_exists(git_path_cherry_pick_head()) &&
- !file_exists(git_path_revert_head()))
- return error(_("no cherry-pick or revert in progress"));
- if (read_ref_full("HEAD", 0, head_sha1, NULL))
- return error(_("cannot resolve HEAD"));
- if (is_null_sha1(head_sha1))
- return error(_("cannot abort from a branch yet to be born"));
- return reset_for_rollback(head_sha1);
-}
+ base_offset += command_len + 1;
+ }
-static int sequencer_rollback(struct replay_opts *opts)
-{
- FILE *f;
- unsigned char sha1[20];
- struct strbuf buf = STRBUF_INIT;
+ /*
+ * Insert <commands> after every pick. Here, fixup/squash chains
+ * are considered part of the pick, so we insert the commands *after*
+ * those chains if there are any.
+ *
+ * As we insert the exec commands immediately after rearranging
+ * any fixups and before the user edits the list, a fixup chain
+ * can never contain comments (any comments are empty picks that
+ * have been commented out because the user did not specify
+ * --keep-empty). So, it is safe to insert an exec command
+ * without looking at the command following a comment.
+ */
+ 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;
+ }
- f = fopen(git_path_head_file(), "r");
- if (!f && errno == ENOENT) {
- /*
- * There is no multiple-cherry-pick in progress.
- * If CHERRY_PICK_HEAD or REVERT_HEAD indicates
- * a single-cherry-pick in progress, abort that.
- */
- return rollback_single_pick();
- }
- if (!f)
- return error_errno(_("cannot open %s"), git_path_head_file());
- if (strbuf_getline_lf(&buf, f)) {
- error(_("cannot read %s: %s"), git_path_head_file(),
- ferror(f) ? strerror(errno) : _("unexpected end of file"));
- fclose(f);
- goto fail;
+ ALLOC_GROW(items, nr + 1, alloc);
+ items[nr++] = todo_list->items[i];
+
+ if (command == TODO_PICK || command == TODO_MERGE)
+ insert = 1;
}
- fclose(f);
- if (get_sha1_hex(buf.buf, sha1) || buf.buf[40] != '\0') {
- error(_("stored pre-cherry-pick HEAD file '%s' is corrupt"),
- git_path_head_file());
- goto fail;
+
+ /* insert or append final <commands> */
+ if (insert || nr == todo_list->nr) {
+ ALLOC_GROW(items, nr + commands->nr, alloc);
+ COPY_ARRAY(items + nr, base_items, commands->nr);
+ nr += commands->nr;
}
- if (is_null_sha1(sha1)) {
- error(_("cannot abort from a branch yet to be born"));
- goto fail;
+
+ free(base_items);
+ FREE_AND_NULL(todo_list->items);
+ todo_list->items = items;
+ todo_list->nr = nr;
+ todo_list->alloc = alloc;
+}
+
+static void todo_list_to_strbuf(struct repository *r, struct todo_list *todo_list,
+ struct strbuf *buf, int num, unsigned flags)
+{
+ struct todo_item *item;
+ int i, max = todo_list->nr;
+
+ if (num > 0 && num < max)
+ max = num;
+
+ for (item = todo_list->items, i = 0; i < max; i++, item++) {
+ /* if the item is not a command write it and continue */
+ if (item->command >= TODO_COMMENT) {
+ strbuf_addf(buf, "%.*s\n", item->arg_len,
+ todo_item_get_arg(todo_list, item));
+ continue;
+ }
+
+ /* add command to the buffer */
+ if (flags & TODO_LIST_ABBREVIATE_CMDS)
+ strbuf_addch(buf, command_to_char(item->command));
+ else
+ strbuf_addstr(buf, command_to_string(item->command));
+
+ /* add commit id */
+ if (item->commit) {
+ const char *oid = flags & TODO_LIST_SHORTEN_IDS ?
+ short_commit_name(item->commit) :
+ oid_to_hex(&item->commit->object.oid);
+
+ if (item->command == TODO_MERGE) {
+ if (item->flags & TODO_EDIT_MERGE_MSG)
+ strbuf_addstr(buf, " -c");
+ else
+ strbuf_addstr(buf, " -C");
+ }
+
+ strbuf_addf(buf, " %s", oid);
+ }
+
+ /* add all the rest */
+ if (!item->arg_len)
+ strbuf_addch(buf, '\n');
+ else
+ strbuf_addf(buf, " %.*s\n", item->arg_len,
+ todo_item_get_arg(todo_list, item));
}
- if (reset_for_rollback(sha1))
- goto fail;
- remove_sequencer_state();
- strbuf_release(&buf);
- return 0;
-fail:
- strbuf_release(&buf);
- return -1;
}
-static void save_todo(struct commit_list *todo_list, struct replay_opts *opts)
+int todo_list_write_to_file(struct repository *r, struct todo_list *todo_list,
+ const char *file, const char *shortrevisions,
+ const char *shortonto, int num, unsigned flags)
{
- static struct lock_file todo_lock;
+ int res;
struct strbuf buf = STRBUF_INIT;
- int fd;
- fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), LOCK_DIE_ON_ERROR);
- if (format_todo(&buf, todo_list, opts) < 0)
- die(_("Could not format %s."), git_path_todo_file());
- if (write_in_full(fd, buf.buf, buf.len) < 0) {
- strbuf_release(&buf);
- die_errno(_("Could not write to %s"), git_path_todo_file());
- }
- if (commit_lock_file(&todo_lock) < 0) {
- strbuf_release(&buf);
- die(_("Error wrapping up %s."), git_path_todo_file());
- }
+ todo_list_to_strbuf(r, todo_list, &buf, num, flags);
+ if (flags & TODO_LIST_APPEND_TODO_HELP)
+ append_todo_help(flags & TODO_LIST_KEEP_EMPTY, count_commands(todo_list),
+ shortrevisions, shortonto, &buf);
+
+ res = write_message(buf.buf, buf.len, file, 0);
strbuf_release(&buf);
+
+ return res;
}
-static void save_opts(struct replay_opts *opts)
+static const char edit_todo_list_advice[] =
+N_("You can fix this with 'git rebase --edit-todo' "
+"and then run 'git rebase --continue'.\n"
+"Or you can abort the rebase with 'git rebase"
+" --abort'.\n");
+
+int check_todo_list_from_file(struct repository *r)
{
- const char *opts_file = git_path_opts_file();
+ struct todo_list old_todo = TODO_LIST_INIT, new_todo = TODO_LIST_INIT;
+ int res = 0;
- 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 (strbuf_read_file_or_whine(&new_todo.buf, rebase_path_todo()) < 0) {
+ res = -1;
+ goto out;
}
- if (opts->strategy)
- git_config_set_in_file(opts_file, "options.strategy", opts->strategy);
- if (opts->gpg_sign)
- git_config_set_in_file(opts_file, "options.gpg-sign", opts->gpg_sign);
- 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);
+
+ if (strbuf_read_file_or_whine(&old_todo.buf, rebase_path_todo_backup()) < 0) {
+ res = -1;
+ goto out;
}
+
+ res = todo_list_parse_insn_buffer(r, old_todo.buf.buf, &old_todo);
+ if (!res)
+ res = todo_list_parse_insn_buffer(r, new_todo.buf.buf, &new_todo);
+ if (!res)
+ res = todo_list_check(&old_todo, &new_todo);
+ if (res)
+ fprintf(stderr, _(edit_todo_list_advice));
+out:
+ todo_list_release(&old_todo);
+ todo_list_release(&new_todo);
+
+ return res;
}
-static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
+/* skip picking commits whose parents are unchanged */
+static int skip_unnecessary_picks(struct repository *r,
+ struct todo_list *todo_list,
+ struct object_id *base_oid)
{
- struct commit_list *cur;
- int res;
+ struct object_id *parent_oid;
+ int i;
- 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 (i = 0; i < todo_list->nr; i++) {
+ struct todo_item *item = todo_list->items + i;
- for (cur = todo_list; cur; cur = cur->next) {
- save_todo(cur, opts);
- res = do_pick_commit(cur->item, opts);
- if (res)
- return res;
+ if (item->command >= TODO_NOOP)
+ continue;
+ if (item->command != TODO_PICK)
+ break;
+ if (parse_commit(item->commit)) {
+ return error(_("could not parse commit '%s'"),
+ oid_to_hex(&item->commit->object.oid));
+ }
+ if (!item->commit->parents)
+ break; /* root commit */
+ if (item->commit->parents->next)
+ break; /* merge commit */
+ parent_oid = &item->commit->parents->item->object.oid;
+ if (!oideq(parent_oid, base_oid))
+ break;
+ oidcpy(base_oid, &item->commit->object.oid);
}
+ if (i > 0) {
+ const char *done_path = rebase_path_done();
- /*
- * Sequence of picks finished successfully; cleanup by
- * removing the .git/sequencer directory
- */
- remove_sequencer_state();
- return 0;
-}
+ if (todo_list_write_to_file(r, todo_list, done_path, NULL, NULL, i, 0)) {
+ error_errno(_("could not write to '%s'"), done_path);
+ return -1;
+ }
-static int continue_single_pick(void)
-{
- const char *argv[] = { "commit", NULL };
+ MOVE_ARRAY(todo_list->items, todo_list->items + i, todo_list->nr - i);
+ todo_list->nr -= i;
+ todo_list->current = 0;
+ todo_list->done_nr += i;
- if (!file_exists(git_path_cherry_pick_head()) &&
- !file_exists(git_path_revert_head()))
- return error(_("no cherry-pick or revert in progress"));
- return run_command_v_opt(argv, RUN_GIT_CMD);
+ if (is_fixup(peek_command(todo_list, 0)))
+ record_in_rewritten(base_oid, peek_command(todo_list, 0));
+ }
+
+ return 0;
}
-static int sequencer_continue(struct replay_opts *opts)
+int complete_action(struct repository *r, struct replay_opts *opts, unsigned flags,
+ const char *shortrevisions, const char *onto_name,
+ struct commit *onto, const char *orig_head,
+ struct string_list *commands, unsigned autosquash,
+ struct todo_list *todo_list)
{
- struct commit_list *todo_list = NULL;
+ const char *shortonto, *todo_file = rebase_path_todo();
+ struct todo_list new_todo = TODO_LIST_INIT;
+ struct strbuf *buf = &todo_list->buf, buf2 = STRBUF_INIT;
+ struct object_id oid = onto->object.oid;
+ int res;
- if (!file_exists(git_path_todo_file()))
- return continue_single_pick();
- read_populate_opts(&opts);
- read_populate_todo(&todo_list, opts);
+ shortonto = find_unique_abbrev(&oid, DEFAULT_ABBREV);
- /* Verify that the conflict has been resolved */
- if (file_exists(git_path_cherry_pick_head()) ||
- file_exists(git_path_revert_head())) {
- int ret = continue_single_pick();
- if (ret)
- return ret;
+ if (buf->len == 0) {
+ struct todo_item *item = append_new_todo(todo_list);
+ item->command = TODO_NOOP;
+ item->commit = NULL;
+ item->arg_len = item->arg_offset = item->flags = item->offset_in_buf = 0;
}
- if (index_differs_from("HEAD", 0))
- return error_dirty_index(opts);
- todo_list = todo_list->next;
- return pick_commits(todo_list, opts);
-}
-static int single_pick(struct commit *cmit, struct replay_opts *opts)
-{
- setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
- return do_pick_commit(cmit, opts);
-}
+ if (autosquash && todo_list_rearrange_squash(todo_list))
+ return -1;
-int sequencer_pick_revisions(struct replay_opts *opts)
-{
- struct commit_list *todo_list = NULL;
- unsigned char sha1[20];
- int i;
+ if (commands->nr)
+ todo_list_add_exec_commands(todo_list, commands);
- if (opts->subcommand == REPLAY_NONE)
- assert(opts->revs);
+ if (count_commands(todo_list) == 0) {
+ apply_autostash(opts);
+ sequencer_remove_state(opts);
- read_and_refresh_cache(opts);
+ return error(_("nothing to do"));
+ }
- /*
- * 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_REMOVE_STATE) {
- remove_sequencer_state();
- return 0;
+ res = edit_todo_list(r, todo_list, &new_todo, shortrevisions,
+ shortonto, flags);
+ if (res == -1)
+ return -1;
+ else if (res == -2) {
+ apply_autostash(opts);
+ sequencer_remove_state(opts);
+
+ return -1;
+ } else if (res == -3) {
+ apply_autostash(opts);
+ sequencer_remove_state(opts);
+ todo_list_release(&new_todo);
+
+ return error(_("nothing to do"));
}
- if (opts->subcommand == REPLAY_ROLLBACK)
- return sequencer_rollback(opts);
- if (opts->subcommand == REPLAY_CONTINUE)
- return sequencer_continue(opts);
- for (i = 0; i < opts->revs->pending.nr; i++) {
- unsigned char sha1[20];
- const char *name = opts->revs->pending.objects[i].name;
+ if (todo_list_parse_insn_buffer(r, new_todo.buf.buf, &new_todo) ||
+ todo_list_check(todo_list, &new_todo)) {
+ fprintf(stderr, _(edit_todo_list_advice));
+ checkout_onto(r, opts, onto_name, &onto->object.oid, orig_head);
+ todo_list_release(&new_todo);
- /* This happens when using --stdin. */
- if (!strlen(name))
- continue;
+ return -1;
+ }
- if (!get_sha1(name, sha1)) {
- if (!lookup_commit_reference_gently(sha1, 1)) {
- enum object_type type = sha1_object_info(sha1, NULL);
- die(_("%s: can't cherry-pick a %s"), name, typename(type));
- }
- } else
- die(_("%s: bad revision"), name);
+ /* Expand the commit IDs */
+ todo_list_to_strbuf(r, &new_todo, &buf2, -1, 0);
+ strbuf_swap(&new_todo.buf, &buf2);
+ strbuf_release(&buf2);
+ new_todo.total_nr -= new_todo.nr;
+ if (todo_list_parse_insn_buffer(r, new_todo.buf.buf, &new_todo) < 0)
+ BUG("invalid todo list after expanding IDs:\n%s",
+ new_todo.buf.buf);
+
+ if (opts->allow_ff && skip_unnecessary_picks(r, &new_todo, &oid)) {
+ todo_list_release(&new_todo);
+ return error(_("could not skip unnecessary pick commands"));
}
- /*
- * If we were called as "git cherry-pick <commit>", just
- * cherry-pick/revert it, set CHERRY_PICK_HEAD /
- * REVERT_HEAD, and don't touch the sequencer state.
- * This means it is possible to cherry-pick in the middle
- * of a cherry-pick sequence.
- */
- if (opts->revs->cmdline.nr == 1 &&
- opts->revs->cmdline.rev->whence == REV_CMD_REV &&
- opts->revs->no_walk &&
- !opts->revs->cmdline.rev->flags) {
- struct commit *cmit;
- if (prepare_revision_walk(opts->revs))
- die(_("revision walk setup failed"));
- cmit = get_revision(opts->revs);
- if (!cmit || get_revision(opts->revs))
- die("BUG: expected exactly one commit from walk");
- return single_pick(cmit, opts);
+ if (todo_list_write_to_file(r, &new_todo, todo_file, NULL, NULL, -1,
+ flags & ~(TODO_LIST_SHORTEN_IDS))) {
+ todo_list_release(&new_todo);
+ return error_errno(_("could not write '%s'"), todo_file);
}
- /*
- * Start a new cherry-pick/ revert sequence; but
- * first, make sure that an existing one isn't in
- * progress
- */
+ res = -1;
- walk_revs_populate_todo(&todo_list, opts);
- if (create_seq_dir() < 0)
- return -1;
- if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT))
- return error(_("Can't revert as initial commit"));
- save_head(sha1_to_hex(sha1));
- save_opts(opts);
- return pick_commits(todo_list, opts);
+ if (checkout_onto(r, opts, onto_name, &oid, orig_head))
+ goto cleanup;
+
+ if (require_clean_work_tree(r, "rebase", "", 1, 1))
+ goto cleanup;
+
+ todo_list_write_total_nr(&new_todo);
+ res = pick_commits(r, &new_todo, opts);
+
+cleanup:
+ todo_list_release(&new_todo);
+
+ return res;
}
-void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag)
+struct subject2item_entry {
+ struct hashmap_entry entry;
+ int i;
+ char subject[FLEX_ARRAY];
+};
+
+static int subject2item_cmp(const void *fndata,
+ const struct hashmap_entry *eptr,
+ const struct hashmap_entry *entry_or_key,
+ const void *key)
{
- unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP;
- struct strbuf sob = STRBUF_INIT;
- int has_footer;
+ const struct subject2item_entry *a, *b;
- strbuf_addstr(&sob, sign_off_header);
- strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
- getenv("GIT_COMMITTER_EMAIL")));
- strbuf_addch(&sob, '\n');
+ a = container_of(eptr, const struct subject2item_entry, entry);
+ b = container_of(entry_or_key, const struct subject2item_entry, entry);
+ return key ? strcmp(a->subject, key) : strcmp(a->subject, b->subject);
+}
+
+define_commit_slab(commit_todo_item, struct todo_item *);
+
+/*
+ * Rearrange the todo list that has both "pick commit-id msg" and "pick
+ * commit-id fixup!/squash! msg" in it so that the latter is put immediately
+ * after the former, and change "pick" to "fixup"/"squash".
+ *
+ * Note that if the config has specified a custom instruction format, each log
+ * message will have to be retrieved from the commit (as the oneline in the
+ * script cannot be trusted) in order to normalize the autosquash arrangement.
+ */
+int todo_list_rearrange_squash(struct todo_list *todo_list)
+{
+ struct hashmap subject2item;
+ int rearranged = 0, *next, *tail, i, nr = 0, alloc = 0;
+ char **subjects;
+ struct commit_todo_item commit_todo;
+ struct todo_item *items = NULL;
+
+ init_commit_todo_item(&commit_todo);
/*
- * If the whole message buffer is equal to the sob, pretend that we
- * found a conforming footer with a matching sob
+ * The hashmap maps onelines to the respective todo list index.
+ *
+ * If any items need to be rearranged, the next[i] value will indicate
+ * which item was moved directly after the i'th.
+ *
+ * In that case, last[i] will indicate the index of the latest item to
+ * be moved to appear after the i'th.
*/
- if (msgbuf->len - ignore_footer == sob.len &&
- !strncmp(msgbuf->buf, sob.buf, sob.len))
- has_footer = 3;
- else
- has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer);
+ hashmap_init(&subject2item, subject2item_cmp, NULL, todo_list->nr);
+ ALLOC_ARRAY(next, todo_list->nr);
+ ALLOC_ARRAY(tail, todo_list->nr);
+ ALLOC_ARRAY(subjects, todo_list->nr);
+ for (i = 0; i < todo_list->nr; i++) {
+ struct strbuf buf = STRBUF_INIT;
+ struct todo_item *item = todo_list->items + i;
+ const char *commit_buffer, *subject, *p;
+ size_t subject_len;
+ int i2 = -1;
+ struct subject2item_entry *entry;
+
+ next[i] = tail[i] = -1;
+ if (!item->commit || item->command == TODO_DROP) {
+ subjects[i] = NULL;
+ continue;
+ }
- if (!has_footer) {
- const char *append_newlines = NULL;
- size_t len = msgbuf->len - ignore_footer;
+ if (is_fixup(item->command)) {
+ clear_commit_todo_item(&commit_todo);
+ return error(_("the script was already rearranged."));
+ }
+
+ *commit_todo_item_at(&commit_todo, item->commit) = item;
+
+ parse_commit(item->commit);
+ commit_buffer = logmsg_reencode(item->commit, NULL, "UTF-8");
+ find_commit_subject(commit_buffer, &subject);
+ format_subject(&buf, subject, " ");
+ subject = subjects[i] = strbuf_detach(&buf, &subject_len);
+ unuse_commit_buffer(item->commit, commit_buffer);
+ if ((skip_prefix(subject, "fixup! ", &p) ||
+ skip_prefix(subject, "squash! ", &p))) {
+ struct commit *commit2;
+
+ for (;;) {
+ while (isspace(*p))
+ p++;
+ if (!skip_prefix(p, "fixup! ", &p) &&
+ !skip_prefix(p, "squash! ", &p))
+ break;
+ }
+
+ entry = hashmap_get_entry_from_hash(&subject2item,
+ strhash(p), p,
+ struct subject2item_entry,
+ entry);
+ if (entry)
+ /* found by title */
+ i2 = entry->i;
+ else if (!strchr(p, ' ') &&
+ (commit2 =
+ lookup_commit_reference_by_name(p)) &&
+ *commit_todo_item_at(&commit_todo, commit2))
+ /* found by commit name */
+ i2 = *commit_todo_item_at(&commit_todo, commit2)
+ - todo_list->items;
+ else {
+ /* copy can be a prefix of the commit subject */
+ for (i2 = 0; i2 < i; i2++)
+ if (subjects[i2] &&
+ starts_with(subjects[i2], p))
+ break;
+ if (i2 == i)
+ i2 = -1;
+ }
+ }
+ if (i2 >= 0) {
+ rearranged = 1;
+ todo_list->items[i].command =
+ starts_with(subject, "fixup!") ?
+ TODO_FIXUP : TODO_SQUASH;
+ if (next[i2] < 0)
+ next[i2] = i;
+ else
+ next[tail[i2]] = i;
+ tail[i2] = i;
+ } else if (!hashmap_get_from_hash(&subject2item,
+ strhash(subject), subject)) {
+ FLEX_ALLOC_MEM(entry, subject, subject, subject_len);
+ entry->i = i;
+ hashmap_entry_init(&entry->entry,
+ strhash(entry->subject));
+ hashmap_put(&subject2item, &entry->entry);
+ }
+ }
+
+ if (rearranged) {
+ for (i = 0; i < todo_list->nr; i++) {
+ enum todo_command command = todo_list->items[i].command;
+ int cur = i;
- if (!len) {
- /*
- * The buffer is completely empty. Leave foom for
- * the title and body to be filled in by the user.
- */
- append_newlines = "\n\n";
- } else if (msgbuf->buf[len - 1] != '\n') {
- /*
- * Incomplete line. Complete the line and add a
- * blank one so that there is an empty line between
- * the message body and the sob.
- */
- append_newlines = "\n\n";
- } else if (len == 1) {
- /*
- * Buffer contains a single newline. Add another
- * so that we leave room for the title and body.
- */
- append_newlines = "\n";
- } else if (msgbuf->buf[len - 2] != '\n') {
/*
- * Buffer ends with a single newline. Add another
- * so that there is an empty line between the message
- * body and the sob.
+ * Initially, all commands are 'pick's. If it is a
+ * fixup or a squash now, we have rearranged it.
*/
- append_newlines = "\n";
- } /* else, the buffer already ends with two newlines. */
+ if (is_fixup(command))
+ continue;
- if (append_newlines)
- strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
- append_newlines, strlen(append_newlines));
+ while (cur >= 0) {
+ ALLOC_GROW(items, nr + 1, alloc);
+ items[nr++] = todo_list->items[cur];
+ cur = next[cur];
+ }
+ }
+
+ FREE_AND_NULL(todo_list->items);
+ todo_list->items = items;
+ todo_list->nr = nr;
+ todo_list->alloc = alloc;
}
- if (has_footer != 3 && (!no_dup_sob || has_footer != 2))
- strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
- sob.buf, sob.len);
+ free(next);
+ free(tail);
+ for (i = 0; i < todo_list->nr; i++)
+ free(subjects[i]);
+ free(subjects);
+ hashmap_free_entries(&subject2item, struct subject2item_entry, entry);
- strbuf_release(&sob);
+ clear_commit_todo_item(&commit_todo);
+
+ return 0;
}
projects / platform / upstream / git.git / blobdiff