#include "cache.h"
+#include "config.h"
#include "lockfile.h"
#include "sequencer.h"
#include "dir.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"
#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
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_seq_dir, "sequencer")
-static int is_rfc2822_line(const char *buf, int len)
-{
- int i;
+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")
- for (i = 0; i < len; i++) {
- int ch = buf[i];
- if (ch == ':')
- return 1;
- if (!isalnum(ch) && ch != '-')
- break;
- }
+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'.
+ */
+static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo")
+/*
+ * 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.
+ *
+ * The first line of the file is of the form
+ * # This is a combination of $count commits.
+ * where $count is the number of commits whose messages have been
+ * written to the file so far (including the initial "pick" commit).
+ * Each time that a commit message is processed, this line is read and
+ * updated. It is deleted just before the combined commit is made.
+ */
+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")
+/*
+ * 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 following files are written by git-rebase just after parsing the
+ * command-line (and are only consumed, not modified, by the sequencer).
+ */
+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_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 inline int is_rebase_i(const struct replay_opts *opts)
+{
+ return opts->action == REPLAY_INTERACTIVE_REBASE;
+}
- return 0;
+static const char *get_dir(const struct replay_opts *opts)
+{
+ if (is_rebase_i(opts))
+ return rebase_path();
+ return git_path_seq_dir();
}
-static int is_cherry_picked_from_line(const char *buf, int len)
+static const char *get_todo_path(const 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] == ')';
+ if (is_rebase_i(opts))
+ return rebase_path_todo();
+ return git_path_todo_file();
}
/*
static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob,
int ignore_footer)
{
- char prev;
- int i, k;
- int len = sb->len - ignore_footer;
- const char *buf = sb->buf;
- int found_sob = 0;
-
- /* footer must end with newline */
- if (!len || buf[len - 1] != '\n')
- return 0;
+ struct trailer_info info;
+ int i;
+ int found_sob = 0, found_sob_last = 0;
- 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);
- /* 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 dir = STRBUF_INIT;
+ int i;
+
+ free(opts->gpg_sign);
+ free(opts->strategy);
+ for (i = 0; i < opts->xopts_nr; i++)
+ free(opts->xopts[i]);
+ free(opts->xopts);
- strbuf_addstr(&seq_dir, git_path(SEQ_DIR));
- remove_dir_recursively(&seq_dir, 0);
- strbuf_release(&seq_dir);
+ strbuf_addf(&dir, "%s", get_dir(opts));
+ remove_dir_recursively(&dir, 0);
+ strbuf_release(&dir);
+
+ return 0;
}
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.hash, 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);
}
}
-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);
- if (commit_lock_file(&msg_file) < 0)
- die(_("Error wrapping up %s."), filename);
+ 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) {
+ rollback_lock_file(&msg_file);
+ return error_errno(_("could not write to '%s'"), filename);
+ }
+ if (append_eol && write(msg_fd, "\n", 1) < 0) {
+ rollback_lock_file(&msg_file);
+ return error_errno(_("could not write eol to '%s'"), filename);
+ }
+ if (commit_lock_file(&msg_file) < 0) {
+ rollback_lock_file(&msg_file);
+ 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)
{
- return lookup_tree(EMPTY_TREE_SHA1_BIN);
+ return lookup_tree(&empty_tree_oid);
}
static int error_dirty_index(struct replay_opts *opts)
{
if (read_cache_unmerged())
- return error_resolve_conflict(action_name(opts));
+ 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,
+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(const struct object_id *to, const struct object_id *from,
int unborn, struct replay_opts *opts)
{
struct ref_transaction *transaction;
read_cache();
if (checkout_fast_forward(from, to, 1))
- exit(128); /* the callee should have complained already */
+ 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->hash, unborn ? null_sha1 : from->hash,
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;
}
static int do_recursive_merge(struct commit *base, struct commit *next,
const char *base_label, const char *next_label,
- unsigned char *head, struct strbuf *msgbuf,
+ struct object_id *head, struct strbuf *msgbuf,
struct replay_opts *opts)
{
struct merge_options o;
struct tree *result, *next_tree, *base_tree, *head_tree;
int clean;
- const char **xopt;
+ char **xopt;
static struct lock_file index_lock;
- hold_locked_index(&index_lock, 1);
+ hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
read_cache();
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;
head_tree = parse_tree_indirect(head);
next_tree = next ? next->tree : empty_tree();
clean = merge_trees(&o,
head_tree,
next_tree, base_tree, &result);
+ if (is_rebase_i(opts) && clean <= 0)
+ fputs(o.obuf.buf, stdout);
strbuf_release(&o.obuf);
if (clean < 0)
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));
+ /*
+ * TRANSLATORS: %s will be "revert", "cherry-pick" or
+ * "rebase -i".
+ */
+ return error(_("%s: Unable to write new index file"),
+ _(action_name(opts)));
rollback_lock_file(&index_lock);
if (opts->signoff)
static int is_index_unchanged(void)
{
- unsigned char head_sha1[20];
+ struct object_id head_oid;
struct commit *head_commit;
- 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.hash, NULL))
+ return error(_("could not resolve HEAD commit\n"));
- head_commit = lookup_commit(head_sha1);
+ head_commit = lookup_commit(&head_oid);
/*
* If head_commit is NULL, check_commit, called from
if (!cache_tree_fully_valid(active_cache_tree))
if (cache_tree_update(&the_index, 0))
- return error(_("Unable to update cache tree\n"));
+ return error(_("unable to update cache tree\n"));
+
+ return !oidcmp(&active_cache_tree->oid,
+ &head_commit->tree->object.oid);
+}
+
+static int write_author_script(const char *message)
+{
+ struct strbuf buf = STRBUF_INIT;
+ const char *eol;
+ int res;
+
+ 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;
+
+ 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++));
+ res = write_message(buf.buf, buf.len, rebase_path_author_script(), 1);
+ strbuf_release(&buf);
+ return res;
+}
+
+/*
+ * Read a list of environment variable assignments (such as the author-script
+ * file) into an environment block. Returns -1 on error, 0 otherwise.
+ */
+static int read_env_script(struct argv_array *env)
+{
+ struct strbuf script = STRBUF_INIT;
+ int i, count = 0;
+ char *p, *p2;
- return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash);
+ if (strbuf_read_file(&script, rebase_path_author_script(), 256) <= 0)
+ return -1;
+
+ for (p = script.buf; *p; p++)
+ if (skip_prefix(p, "'\\\\''", (const char **)&p2))
+ strbuf_splice(&script, p - script.buf, p2 - p, "'", 1);
+ else if (*p == '\'')
+ strbuf_splice(&script, p-- - script.buf, 1, "", 0);
+ else if (*p == '\n') {
+ *p = '\0';
+ count++;
+ }
+
+ for (i = 0, p = script.buf; i < count; i++) {
+ argv_array_push(env, p);
+ p += strlen(p) + 1;
+ }
+
+ return 0;
}
+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)
+
/*
* 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 run_git_commit(const char *defmsg, struct replay_opts *opts,
- int allow_empty)
+ unsigned int flags)
{
- struct argv_array array;
- int rc;
+ struct child_process cmd = CHILD_PROCESS_INIT;
const char *value;
- argv_array_init(&array);
- argv_array_push(&array, "commit");
- argv_array_push(&array, "-n");
+ cmd.git_cmd = 1;
- 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 (is_rebase_i(opts)) {
+ if (!(flags & EDIT_MSG)) {
+ cmd.stdout_to_stderr = 1;
+ cmd.err = -1;
+ }
+
+ if (read_env_script(&cmd.env_array)) {
+ const char *gpg_opt = gpg_sign_opt_quoted(opts);
+
+ return error(_(staged_changes_advice),
+ gpg_opt, gpg_opt);
+ }
}
- if (allow_empty)
- argv_array_push(&array, "--allow-empty");
+ 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 (opts->signoff)
+ argv_array_push(&cmd.args, "-s");
+ if (defmsg)
+ argv_array_pushl(&cmd.args, "-F", defmsg, 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 &&
+ git_config_get_value("commit.cleanup", &value))
+ argv_array_push(&cmd.args, "--cleanup=verbatim");
+
+ if ((flags & ALLOW_EMPTY))
+ argv_array_push(&cmd.args, "--allow-empty");
if (opts->allow_empty_message)
- argv_array_push(&array, "--allow-empty-message");
+ argv_array_push(&cmd.args, "--allow-empty-message");
+
+ if (cmd.err == -1) {
+ /* hide stderr on success */
+ struct strbuf buf = STRBUF_INIT;
+ int rc = pipe_command(&cmd,
+ NULL, 0,
+ /* stdout is already redirected */
+ NULL, 0,
+ &buf, 0);
+ if (rc)
+ fputs(buf.buf, stderr);
+ strbuf_release(&buf);
+ return rc;
+ }
- rc = run_command_v_opt(array.argv, RUN_GIT_CMD);
- argv_array_clear(&array);
- return rc;
+ return run_command(&cmd);
}
static int is_original_commit_empty(struct commit *commit)
{
- const unsigned char *ptree_sha1;
+ const struct object_id *ptree_oid;
if (parse_commit(commit))
- return error(_("Could not parse commit %s\n"),
+ 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"),
+ return error(_("could not parse parent commit %s\n"),
oid_to_hex(&parent->object.oid));
- ptree_sha1 = parent->tree->object.oid.hash;
+ ptree_oid = &parent->tree->object.oid;
} else {
- ptree_sha1 = EMPTY_TREE_SHA1_BIN; /* commit is root */
+ ptree_oid = &empty_tree_oid; /* commit is root */
}
- return !hashcmp(ptree_sha1, commit->tree->object.oid.hash);
+ return !oidcmp(ptree_oid, &commit->tree->object.oid);
}
/*
return 1;
}
-static int do_pick_commit(struct commit *commit, struct replay_opts *opts)
+/*
+ * Note that ordering matters in this enum. Not only must it match the mapping
+ * below, it is also divided into several sections that matter. When adding
+ * new commands, make sure you add it in the right section.
+ */
+enum todo_command {
+ /* commands that handle commits */
+ TODO_PICK = 0,
+ TODO_REVERT,
+ TODO_EDIT,
+ TODO_REWORD,
+ TODO_FIXUP,
+ TODO_SQUASH,
+ /* commands that do something else than handling a single commit */
+ TODO_EXEC,
+ /* commands that do nothing but are counted for reporting progress */
+ TODO_NOOP,
+ TODO_DROP,
+ /* comments (not counted for reporting progress) */
+ TODO_COMMENT
+};
+
+static struct {
+ char c;
+ const char *str;
+} todo_command_info[] = {
+ { 'p', "pick" },
+ { 0, "revert" },
+ { 'e', "edit" },
+ { 'r', "reword" },
+ { 'f', "fixup" },
+ { 's', "squash" },
+ { 'x', "exec" },
+ { 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 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;
+}
+
+static int update_squash_messages(enum todo_command command,
+ struct commit *commit, struct replay_opts *opts)
+{
+ struct strbuf buf = STRBUF_INIT;
+ int count, res;
+ const char *message, *body;
+
+ if (file_exists(rebase_path_squash_msg())) {
+ struct strbuf header = STRBUF_INIT;
+ char *eol, *p;
+
+ if (strbuf_read_file(&buf, rebase_path_squash_msg(), 2048) <= 0)
+ return error(_("could not read '%s'"),
+ rebase_path_squash_msg());
+
+ p = buf.buf + 1;
+ eol = strchrnul(buf.buf, '\n');
+ if (buf.buf[0] != comment_line_char ||
+ (p += strcspn(p, "0123456789\n")) == eol)
+ return error(_("unexpected 1st line of squash message:"
+ "\n\n\t%.*s"),
+ (int)(eol - buf.buf), buf.buf);
+ count = strtol(p, NULL, 10);
+
+ if (count < 1)
+ return error(_("invalid 1st line of squash message:\n"
+ "\n\t%.*s"),
+ (int)(eol - buf.buf), buf.buf);
+
+ strbuf_addf(&header, "%c ", comment_line_char);
+ strbuf_addf(&header,
+ _("This is a combination of %d commits."), ++count);
+ 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(&head)))
+ return error(_("could not read HEAD"));
+ if (!(head_message = get_commit_buffer(head_commit, NULL)))
+ 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());
+ }
+
+ count = 2;
+ strbuf_addf(&buf, "%c ", comment_line_char);
+ strbuf_addf(&buf, _("This is a combination of %d commits."),
+ count);
+ 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 = get_commit_buffer(commit, NULL)))
+ 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:"), count);
+ 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:"),
+ count);
+ 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);
+ 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(enum todo_command command, struct commit *commit,
+ struct replay_opts *opts, int final_fixup)
{
- unsigned char head[20];
+ unsigned int flags = opts->edit ? EDIT_MSG : 0;
+ const char *msg_file = opts->edit ? NULL : git_path_merge_msg();
+ struct object_id head;
struct commit *base, *next, *parent;
const char *base_label, *next_label;
struct commit_message msg = { NULL, NULL, NULL, NULL };
* 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."));
+ if (write_cache_as_tree(head.hash, 0, NULL))
+ return error(_("your index file is unmerged."));
} else {
- unborn = get_sha1("HEAD", head);
+ unborn = get_oid("HEAD", &head);
if (unborn)
- hashcpy(head, EMPTY_TREE_SHA1_BIN);
- if (index_differs_from(unborn ? EMPTY_TREE_SHA1_HEX : "HEAD", 0))
+ oidcpy(&head, &empty_tree_oid);
+ if (index_differs_from(unborn ? EMPTY_TREE_SHA1_HEX : "HEAD", 0, 0))
return error_dirty_index(opts);
}
discard_cache();
- if (!commit->parents) {
+ 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."),
+ 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++)
p = p->next;
if (cnt != opts->mainline || !p)
- return error(_("Commit %s does not have parent %d"),
+ 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."),
+ return error(_("mainline was specified but commit %s is not a merge."),
oid_to_hex(&commit->object.oid));
else
parent = commit->parents->item;
- if (opts->allow_ff &&
- ((parent && !hashcmp(parent->object.oid.hash, head)) ||
- (!parent && unborn)))
- return fast_forward_to(commit->object.oid.hash, head, unborn, opts);
+ 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 && !oidcmp(&parent->object.oid, &head)) ||
+ (!parent && unborn))) {
+ if (is_rebase_i(opts))
+ write_author_script(msg.message);
+ res = fast_forward_to(&commit->object.oid, &head, unborn,
+ opts);
+ if (res || command != TODO_REWORD)
+ goto leave;
+ flags |= EDIT_MSG | AMEND_MSG;
+ if (command == TODO_REWORD)
+ flags |= VERIFY_MSG;
+ msg_file = NULL;
+ goto fast_forward_edit;
+ }
if (parent && parse_commit(parent) < 0)
- /* TRANSLATORS: The first %s will be "revert" or
- "cherry-pick", the second %s a SHA1 */
+ /* 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"),
- action_name(opts), oid_to_hex(&parent->object.oid));
-
- if (get_message(commit, &msg) != 0)
- return error(_("Cannot get commit message for %s"),
- oid_to_hex(&commit->object.oid));
+ command_to_string(command),
+ oid_to_hex(&parent->object.oid));
/*
* "commit" is an existing commit. We would want to apply
* reverse of it if we are revert.
*/
- if (opts->action == REPLAY_REVERT) {
+ if (command == TODO_REVERT) {
base = commit;
base_label = msg.label;
next = parent;
next = commit;
next_label = msg.label;
- /*
- * Append the commit log message to msgbuf; it starts
- * after the tree, parent, author, committer
- * information followed by "\n\n".
- */
- p = strstr(msg.message, "\n\n");
- if (p)
- strbuf_addstr(&msgbuf, skip_blank_lines(p + 2));
+ /* 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);
}
}
- if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REPLAY_REVERT) {
+ if (command == TODO_REWORD)
+ flags |= EDIT_MSG | VERIFY_MSG;
+ else if (is_fixup(command)) {
+ if (update_squash_messages(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();
+ 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());
+ msg_file = dest;
+ flags |= EDIT_MSG;
+ }
+ }
+
+ 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(base, next, base_label, next_label,
- head, &msgbuf, opts);
+ &head, &msgbuf, opts);
if (res < 0)
return res;
- write_message(&msgbuf, git_path_merge_msg());
+ res |= write_message(msgbuf.buf, msgbuf.len,
+ git_path_merge_msg(), 0);
} else {
struct commit_list *common = NULL;
struct commit_list *remotes = NULL;
- write_message(&msgbuf, git_path_merge_msg());
+ res = write_message(msgbuf.buf, msgbuf.len,
+ git_path_merge_msg(), 0);
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);
+ res |= try_merge_command(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
* 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);
+ if (command == TODO_PICK && !opts->no_commit && (res == 0 || res == 1) &&
+ update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL,
+ REF_NODEREF, 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.hash, NULL,
+ REF_NODEREF, UPDATE_REFS_MSG_ON_ERR))
+ res = -1;
if (res) {
- error(opts->action == REPLAY_REVERT
+ error(command == TODO_REVERT
? _("could not revert %s... %s")
: _("could not apply %s... %s"),
- find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV),
- msg.subject);
+ short_commit_name(commit), msg.subject);
print_advice(res == 1, opts);
rerere(opts->allow_rerere_auto);
goto leave;
if (allow < 0) {
res = allow;
goto leave;
- }
+ } else if (allow)
+ flags |= ALLOW_EMPTY;
if (!opts->no_commit)
- res = run_git_commit(git_path_merge_msg(), opts, allow);
+fast_forward_edit:
+ res = run_git_commit(msg_file, opts, flags);
+
+ if (!res && final_fixup) {
+ unlink(rebase_path_fixup_msg());
+ unlink(rebase_path_squash_msg());
+ }
leave:
free_message(commit, &msg);
+ update_abort_safety_file();
return res;
}
-static void prepare_revs(struct replay_opts *opts)
+static int prepare_revs(struct replay_opts *opts)
{
/*
* picking (but not reverting) ranges (but not individual revisions)
opts->revs->reverse ^= 1;
if (prepare_revision_walk(opts->revs))
- die(_("revision walk setup failed"));
+ return error(_("revision walk setup failed"));
if (!opts->revs->commits)
- die(_("empty commit set passed"));
+ return error(_("empty commit set passed"));
+ return 0;
}
-static void read_and_refresh_cache(struct replay_opts *opts)
+static int read_and_refresh_cache(struct replay_opts *opts)
{
static struct lock_file index_lock;
int index_fd = hold_locked_index(&index_lock, 0);
- if (read_index_preload(&the_index, NULL) < 0)
- die(_("git %s: failed to read the index"), action_name(opts));
+ if (read_index_preload(&the_index, NULL) < 0) {
+ rollback_lock_file(&index_lock);
+ return error(_("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));
+ if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) {
+ rollback_lock_file(&index_lock);
+ return error(_("git %s: failed to refresh the index"),
+ _(action_name(opts)));
+ }
}
rollback_lock_file(&index_lock);
+ return 0;
}
-static int format_todo(struct strbuf *buf, struct commit_list *todo_list,
- struct replay_opts *opts)
+struct todo_item {
+ enum todo_command command;
+ struct commit *commit;
+ const char *arg;
+ int arg_len;
+ size_t offset_in_buf;
+};
+
+struct todo_list {
+ struct strbuf buf;
+ struct todo_item *items;
+ int nr, alloc, current;
+ int done_nr, total_nr;
+ struct stat_data stat;
+};
+
+#define TODO_LIST_INIT { STRBUF_INIT }
+
+static void todo_list_release(struct todo_list *todo_list)
{
- 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;
+ strbuf_release(&todo_list->buf);
+ FREE_AND_NULL(todo_list->items);
+ todo_list->nr = todo_list->alloc = 0;
+}
- 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);
- }
- return 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);
+ return todo_list->items + todo_list->nr++;
}
-static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts)
+static int parse_insn_line(struct todo_item *item, const char *bol, char *eol)
{
- unsigned char commit_sha1[20];
- enum replay_action action;
+ struct object_id commit_oid;
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;
+ int i, saved, status, padding;
+
+ /* left-trim */
+ bol += strspn(bol, " \t");
+
+ if (bol == eol || *bol == '\r' || *bol == comment_line_char) {
+ item->command = TODO_COMMENT;
+ item->commit = NULL;
+ item->arg = bol;
+ item->arg_len = eol - bol;
+ return 0;
+ }
+
+ for (i = 0; i < TODO_COMMENT; i++)
+ if (skip_prefix(bol, todo_command_info[i].str, &bol)) {
+ item->command = i;
+ break;
+ } else if (bol[1] == ' ' && *bol == todo_command_info[i].c) {
+ bol++;
+ item->command = i;
+ break;
+ }
+ if (i >= TODO_COMMENT)
+ return -1;
+
+ if (item->command == TODO_NOOP) {
+ item->commit = NULL;
+ item->arg = bol;
+ item->arg_len = eol - bol;
+ return 0;
+ }
/* Eat up extra spaces/ tabs before object name */
padding = strspn(bol, " \t");
if (!padding)
- return NULL;
+ return -1;
bol += padding;
- end_of_object_name = bol + strcspn(bol, " \t\n");
+ if (item->command == TODO_EXEC) {
+ item->arg = bol;
+ 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_sha1(bol, commit_sha1);
+ status = get_oid(bol, &commit_oid);
*end_of_object_name = saved;
- /*
- * Verify that the action matches up with the one in
- * opts; we don't support arbitrary instructions
- */
- if (action != opts->action) {
- 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;
- }
+ item->arg = end_of_object_name + strspn(end_of_object_name, " \t");
+ item->arg_len = (int)(eol - item->arg);
if (status < 0)
- return NULL;
+ return -1;
- return lookup_commit_reference(commit_sha1);
+ item->commit = lookup_commit_reference(&commit_oid);
+ return !item->commit;
}
-static int parse_insn_buffer(char *buf, struct commit_list **todo_list,
- struct replay_opts *opts)
+static int parse_insn_buffer(char *buf, struct todo_list *todo_list)
{
- struct commit_list **next = todo_list;
- struct commit *commit;
- char *p = buf;
- int i;
+ struct todo_item *item;
+ char *p = buf, *next_p;
+ int i, res = 0, fixup_okay = file_exists(rebase_path_done());
- for (i = 1; *p; i++) {
+ for (i = 1; *p; i++, p = next_p) {
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 (!*todo_list)
- return error(_("No commits parsed."));
- return 0;
+
+ 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(item, p, eol)) {
+ res = error(_("invalid line %d: %.*s"),
+ i, (int)(eol - p), p);
+ item->command = TODO_NOOP;
+ }
+
+ 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 void read_populate_todo(struct commit_list **todo_list,
+static int read_populate_todo(struct todo_list *todo_list,
struct replay_opts *opts)
{
- struct strbuf buf = STRBUF_INIT;
+ struct stat st;
+ const char *todo_file = get_todo_path(opts);
int fd, res;
- fd = open(git_path_todo_file(), O_RDONLY);
+ strbuf_reset(&todo_list->buf);
+ fd = open(todo_file, O_RDONLY);
if (fd < 0)
- die_errno(_("Could not open %s"), git_path_todo_file());
- if (strbuf_read(&buf, fd, 0) < 0) {
+ return error_errno(_("could not open '%s'"), todo_file);
+ if (strbuf_read(&todo_list->buf, fd, 0) < 0) {
close(fd);
- strbuf_release(&buf);
- die(_("Could not read %s."), git_path_todo_file());
+ return error(_("could not read '%s'."), todo_file);
}
close(fd);
- res = parse_insn_buffer(buf.buf, todo_list, opts);
- strbuf_release(&buf);
+ res = stat(todo_file, &st);
if (res)
- die(_("Unusable instruction sheet: %s"), git_path_todo_file());
-}
+ return error(_("could not stat '%s'"), todo_file);
+ fill_stat_data(&todo_list->stat, &st);
-static int populate_opts_cb(const char *key, const char *value, void *data)
-{
- struct replay_opts *opts = data;
- int error_flag = 1;
+ res = parse_insn_buffer(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;
+ FILE *f = fopen_or_warn(rebase_path_msgtotal(), "w");
+
+ if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 &&
+ !parse_insn_buffer(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);
+
+ if (f) {
+ fprintf(f, "%d\n", todo_list->total_nr);
+ fclose(f);
+ }
+ }
+
+ 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.mainline"))
opts->mainline = git_config_int(key, value);
else if (!strcmp(key, "options.strategy"))
- git_config_string(&opts->strategy, key, value);
+ git_config_string_dup(&opts->strategy, key, value);
else if (!strcmp(key, "options.gpg-sign"))
- git_config_string(&opts->gpg_sign, key, value);
+ 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
- return error(_("Invalid key: %s"), key);
+ } 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
+ return error(_("invalid key: %s"), key);
if (!error_flag)
- return error(_("Invalid value for %s: %s"), key, value);
+ return error(_("invalid value for %s: %s"), key, value);
return 0;
}
-static void read_populate_opts(struct replay_opts **opts_ptr)
+static void read_strategy_opts(struct replay_opts *opts, struct strbuf *buf)
{
- if (!file_exists(git_path_opts_file()))
+ int i;
+
+ 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;
- if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts_ptr) < 0)
- die(_("Malformed options sheet: %s"), git_path_opts_file());
+
+ opts->xopts_nr = split_cmdline(buf->buf, (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 walk_revs_populate_todo(struct commit_list **todo_list,
+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;
+
+ read_strategy_opts(opts, &buf);
+ strbuf_release(&buf);
+
+ 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 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;
struct commit *commit;
- struct commit_list **next;
- prepare_revs(opts);
+ if (prepare_revs(opts))
+ return -1;
- next = todo_list;
- while ((commit = get_revision(opts->revs)))
- next = commit_list_append(commit, next);
+ while ((commit = get_revision(opts->revs))) {
+ struct todo_item *item = append_new_todo(todo_list);
+ const char *commit_buffer = get_commit_buffer(commit, NULL);
+ const char *subject;
+ int subject_len;
+
+ item->command = command;
+ item->commit = commit;
+ item->arg = NULL;
+ 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);
+ }
+ return 0;
}
static int create_seq_dir(void)
error(_("a cherry-pick or revert is already in progress"));
advise(_("try \"git cherry-pick (--continue | --quit | --abort)\""));
return -1;
- }
- else if (mkdir(git_path_seq_dir(), 0777) < 0)
- die_errno(_("Could not create sequencer directory %s"),
- git_path_seq_dir());
+ } else if (mkdir(git_path_seq_dir(), 0777) < 0)
+ return error_errno(_("could not create sequencer directory '%s'"),
+ git_path_seq_dir());
return 0;
}
-static void save_head(const char *head)
+static int save_head(const char *head)
{
static struct lock_file head_lock;
struct strbuf buf = STRBUF_INIT;
int fd;
+ ssize_t written;
- fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), LOCK_DIE_ON_ERROR);
+ fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), 0);
+ if (fd < 0) {
+ rollback_lock_file(&head_lock);
+ return error_errno(_("could not lock HEAD"));
+ }
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());
+ written = write_in_full(fd, buf.buf, buf.len);
+ strbuf_release(&buf);
+ if (written < 0) {
+ rollback_lock_file(&head_lock);
+ return error_errno(_("could not write to '%s'"),
+ git_path_head_file());
+ }
+ if (commit_lock_file(&head_lock) < 0) {
+ rollback_lock_file(&head_lock);
+ return error(_("failed to finalize '%s'."), git_path_head_file());
+ }
+ return 0;
}
-static int reset_for_rollback(const unsigned char *sha1)
+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 !oidcmp(&actual_head, &expected_head);
+}
+
+static int reset_for_rollback(const struct object_id *oid)
{
const char *argv[4]; /* reset --merge <arg> + NULL */
+
argv[0] = "reset";
argv[1] = "--merge";
- argv[2] = sha1_to_hex(sha1);
+ argv[2] = oid_to_hex(oid);
argv[3] = NULL;
return run_command_v_opt(argv, RUN_GIT_CMD);
}
static int rollback_single_pick(void)
{
- unsigned char head_sha1[20];
+ struct object_id head_oid;
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))
+ if (read_ref_full("HEAD", 0, head_oid.hash, NULL))
return error(_("cannot resolve HEAD"));
- if (is_null_sha1(head_sha1))
+ if (is_null_oid(&head_oid))
return error(_("cannot abort from a branch yet to be born"));
- return reset_for_rollback(head_sha1);
+ return reset_for_rollback(&head_oid);
}
-static int sequencer_rollback(struct replay_opts *opts)
+int sequencer_rollback(struct replay_opts *opts)
{
FILE *f;
- unsigned char sha1[20];
+ struct object_id oid;
struct strbuf buf = STRBUF_INIT;
+ const char *p;
f = fopen(git_path_head_file(), "r");
if (!f && errno == ENOENT) {
return rollback_single_pick();
}
if (!f)
- return error_errno(_("cannot open %s"), git_path_head_file());
+ 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(),
+ error(_("cannot read '%s': %s"), git_path_head_file(),
ferror(f) ? strerror(errno) : _("unexpected end of file"));
fclose(f);
goto fail;
}
fclose(f);
- if (get_sha1_hex(buf.buf, sha1) || buf.buf[40] != '\0') {
+ 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_sha1(sha1)) {
+ if (is_null_oid(&oid)) {
error(_("cannot abort from a branch yet to be born"));
goto fail;
}
- if (reset_for_rollback(sha1))
+
+ 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_for_rollback(&oid))
goto fail;
- remove_sequencer_state();
strbuf_release(&buf);
- return 0;
+ return sequencer_remove_state(opts);
fail:
strbuf_release(&buf);
return -1;
}
-static void save_todo(struct commit_list *todo_list, struct replay_opts *opts)
+static int save_todo(struct todo_list *todo_list, struct replay_opts *opts)
{
static struct lock_file todo_lock;
- struct strbuf buf = STRBUF_INIT;
- int fd;
+ const char *todo_path = get_todo_path(opts);
+ int next = todo_list->current, offset, 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());
+ /*
+ * 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 = next < todo_list->nr ?
+ todo_list->items[next].offset_in_buf : todo_list->buf.len;
+ 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)) {
+ const char *done_path = rebase_path_done();
+ int fd = open(done_path, O_CREAT | O_WRONLY | O_APPEND, 0666);
+ int prev_offset = !next ? 0 :
+ todo_list->items[next - 1].offset_in_buf;
+
+ if (fd >= 0 && offset > prev_offset &&
+ write_in_full(fd, todo_list->buf.buf + prev_offset,
+ offset - prev_offset) < 0) {
+ close(fd);
+ return error_errno(_("could not write to '%s'"),
+ done_path);
+ }
+ if (fd >= 0)
+ close(fd);
}
- strbuf_release(&buf);
+ return 0;
}
-static void save_opts(struct replay_opts *opts)
+static int save_opts(struct replay_opts *opts)
{
const char *opts_file = git_path_opts_file();
+ int res = 0;
if (opts->no_commit)
- git_config_set_in_file(opts_file, "options.no-commit", "true");
+ res |= git_config_set_in_file_gently(opts_file, "options.no-commit", "true");
if (opts->edit)
- git_config_set_in_file(opts_file, "options.edit", "true");
+ res |= git_config_set_in_file_gently(opts_file, "options.edit", "true");
if (opts->signoff)
- git_config_set_in_file(opts_file, "options.signoff", "true");
+ res |= git_config_set_in_file_gently(opts_file, "options.signoff", "true");
if (opts->record_origin)
- git_config_set_in_file(opts_file, "options.record-origin", "true");
+ res |= git_config_set_in_file_gently(opts_file, "options.record-origin", "true");
if (opts->allow_ff)
- git_config_set_in_file(opts_file, "options.allow-ff", "true");
+ 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);
- git_config_set_in_file(opts_file, "options.mainline", buf.buf);
+ res |= git_config_set_in_file_gently(opts_file, "options.mainline", buf.buf);
strbuf_release(&buf);
}
if (opts->strategy)
- git_config_set_in_file(opts_file, "options.strategy", opts->strategy);
+ res |= git_config_set_in_file_gently(opts_file, "options.strategy", opts->strategy);
if (opts->gpg_sign)
- git_config_set_in_file(opts_file, "options.gpg-sign", 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++)
- git_config_set_multivar_in_file(opts_file,
+ 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");
+ return res;
}
-static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
+static int make_patch(struct commit *commit, struct replay_opts *opts)
{
- struct commit_list *cur;
- int res;
+ 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;
+
+ strbuf_addf(&buf, "%s/patch", get_dir(opts));
+ memset(&log_tree_opt, 0, sizeof(log_tree_opt));
+ init_revisions(&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 *commit_buffer = get_commit_buffer(commit, NULL);
+ 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 commit *commit,
+ const char *subject, int subject_len,
+ struct replay_opts *opts, int exit_code, int to_amend)
+{
+ if (make_patch(commit, opts))
+ return -1;
+
+ 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)
+ fprintf(stderr, "Could not apply %s... %.*s\n",
+ short_commit_name(commit), subject_len, subject);
+
+ return exit_code;
+}
+
+static int error_failed_squash(struct commit *commit,
+ struct replay_opts *opts, int subject_len, const char *subject)
+{
+ if (rename(rebase_path_squash_msg(), rebase_path_message()))
+ return error(_("could not rename '%s' to '%s'"),
+ rebase_path_squash_msg(), rebase_path_message());
+ unlink(rebase_path_fixup_msg());
+ unlink(git_path_merge_msg());
+ if (copy_file(git_path_merge_msg(), rebase_path_message(), 0666))
+ return error(_("could not copy '%s' to '%s'"),
+ rebase_path_message(), git_path_merge_msg());
+ return error_with_patch(commit, subject, subject_len, opts, 1, 0);
+}
+
+static int do_exec(const char *command_line)
+{
+ const char *child_argv[] = { NULL, NULL };
+ int dirty, status;
+
+ fprintf(stderr, "Executing: %s\n", command_line);
+ child_argv[0] = command_line;
+ status = run_command_v_opt(child_argv, RUN_USING_SHELL);
+
+ /* force re-reading of the cache */
+ if (discard_cache() < 0 || read_cache() < 0)
+ return error(_("could not read index"));
+
+ dirty = require_clean_work_tree("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;
+ }
+
+ return status;
+}
+
+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 pick_commits(struct todo_list *todo_list, struct replay_opts *opts)
+{
+ int res = 0;
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);
+ if (read_and_refresh_cache(opts))
+ return -1;
- for (cur = todo_list; cur; cur = cur->next) {
- save_todo(cur, opts);
- res = do_pick_commit(cur->item, opts);
+ while (todo_list->current < todo_list->nr) {
+ struct todo_item *item = todo_list->items + todo_list->current;
+ 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);
+ }
+ 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());
+ }
+ 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(item->command, item->commit,
+ opts, is_final_fixup(todo_list));
+ if (is_rebase_i(opts) && res < 0) {
+ /* Reschedule */
+ todo_list->current--;
+ if (save_todo(todo_list, opts))
+ return -1;
+ }
+ if (item->command == TODO_EDIT) {
+ struct commit *commit = item->commit;
+ if (!res)
+ fprintf(stderr,
+ _("Stopped at %s... %.*s\n"),
+ short_commit_name(commit),
+ item->arg_len, item->arg);
+ return error_with_patch(commit,
+ item->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(item->commit, opts,
+ item->arg_len, item->arg);
+ } else if (res && is_rebase_i(opts))
+ return res | error_with_patch(item->commit,
+ item->arg, item->arg_len, opts, res,
+ item->command == TODO_REWORD);
+ } else if (item->command == TODO_EXEC) {
+ char *end_of_arg = (char *)(item->arg + item->arg_len);
+ int saved = *end_of_arg;
+ struct stat st;
+
+ *end_of_arg = '\0';
+ res = do_exec(item->arg);
+ *end_of_arg = saved;
+
+ /* Reread the todo file if it has changed. */
+ if (res)
+ ; /* fall through */
+ else 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)) {
+ todo_list_release(todo_list);
+ if (read_populate_todo(todo_list, opts))
+ res = -1; /* message was printed */
+ /* `current` will be incremented below */
+ todo_list->current = -1;
+ }
+ } else if (!is_noop(item->command))
+ return error(_("unknown command %d"), item->command);
+
+ 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.hash, orig.hash,
+ REF_NODEREF, 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));
+ init_revisions(&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;
+ 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);
+
+ 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
*/
- remove_sequencer_state();
- return 0;
+ return sequencer_remove_state(opts);
}
static int continue_single_pick(void)
return run_command_v_opt(argv, RUN_GIT_CMD);
}
-static int sequencer_continue(struct replay_opts *opts)
+static int commit_staged_changes(struct replay_opts *opts)
+{
+ unsigned int flags = ALLOW_EMPTY | EDIT_MSG;
+
+ if (has_unstaged_changes(1))
+ return error(_("cannot rebase: You have unstaged changes."));
+ if (!has_uncommitted_changes(0)) {
+ const char *cherry_pick_head = git_path_cherry_pick_head();
+
+ if (file_exists(cherry_pick_head) && unlink(cherry_pick_head))
+ return error(_("could not remove CHERRY_PICK_HEAD"));
+ return 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 (oidcmp(&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."));
+
+ strbuf_release(&rev);
+ flags |= AMEND_MSG;
+ }
+
+ if (run_git_commit(rebase_path_message(), opts, flags))
+ return error(_("could not commit staged changes."));
+ unlink(rebase_path_amend());
+ return 0;
+}
+
+int sequencer_continue(struct replay_opts *opts)
{
- struct commit_list *todo_list = NULL;
+ struct todo_list todo_list = TODO_LIST_INIT;
+ int res;
- if (!file_exists(git_path_todo_file()))
+ if (read_and_refresh_cache(opts))
+ return -1;
+
+ if (is_rebase_i(opts)) {
+ if (commit_staged_changes(opts))
+ return -1;
+ } else if (!file_exists(get_todo_path(opts)))
return continue_single_pick();
- read_populate_opts(&opts);
- read_populate_todo(&todo_list, opts);
+ if (read_populate_opts(opts))
+ return -1;
+ if ((res = read_populate_todo(&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()) ||
+ file_exists(git_path_revert_head())) {
+ res = continue_single_pick();
+ if (res)
+ goto release_todo_list;
+ }
+ if (index_differs_from("HEAD", 0, 0)) {
+ res = error_dirty_index(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;
- /* 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 (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);
}
- if (index_differs_from("HEAD", 0))
- return error_dirty_index(opts);
- todo_list = todo_list->next;
- return pick_commits(todo_list, opts);
+
+ res = pick_commits(&todo_list, opts);
+release_todo_list:
+ todo_list_release(&todo_list);
+ return res;
}
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);
+ return do_pick_commit(opts->action == REPLAY_PICK ?
+ TODO_PICK : TODO_REVERT, cmit, opts, 0);
}
int sequencer_pick_revisions(struct replay_opts *opts)
{
- struct commit_list *todo_list = NULL;
- unsigned char sha1[20];
- int i;
-
- if (opts->subcommand == REPLAY_NONE)
- assert(opts->revs);
-
- read_and_refresh_cache(opts);
+ struct todo_list todo_list = TODO_LIST_INIT;
+ struct object_id oid;
+ int i, res;
- /*
- * 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;
- }
- if (opts->subcommand == REPLAY_ROLLBACK)
- return sequencer_rollback(opts);
- if (opts->subcommand == REPLAY_CONTINUE)
- return sequencer_continue(opts);
+ assert(opts->revs);
+ if (read_and_refresh_cache(opts))
+ return -1;
for (i = 0; i < opts->revs->pending.nr; i++) {
- unsigned char sha1[20];
+ struct object_id oid;
const char *name = opts->revs->pending.objects[i].name;
/* This happens when using --stdin. */
if (!strlen(name))
continue;
- 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));
+ if (!get_oid(name, &oid)) {
+ if (!lookup_commit_reference_gently(&oid, 1)) {
+ enum object_type type = sha1_object_info(oid.hash, NULL);
+ return error(_("%s: can't cherry-pick a %s"),
+ name, typename(type));
}
} else
- die(_("%s: bad revision"), name);
+ return error(_("%s: bad revision"), name);
}
/*
!opts->revs->cmdline.rev->flags) {
struct commit *cmit;
if (prepare_revision_walk(opts->revs))
- die(_("revision walk setup failed"));
+ return error(_("revision walk setup failed"));
cmit = get_revision(opts->revs);
if (!cmit || get_revision(opts->revs))
- die("BUG: expected exactly one commit from walk");
+ return error("BUG: expected exactly one commit from walk");
return single_pick(cmit, opts);
}
* progress
*/
- walk_revs_populate_todo(&todo_list, opts);
- if (create_seq_dir() < 0)
+ if (walk_revs_populate_todo(&todo_list, opts) ||
+ create_seq_dir() < 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 (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 (save_opts(opts))
+ return -1;
+ update_abort_safety_file();
+ res = pick_commits(&todo_list, opts);
+ todo_list_release(&todo_list);
+ return res;
}
void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag)
getenv("GIT_COMMITTER_EMAIL")));
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
* 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
strbuf_release(&sob);
}
+
+int sequencer_make_script(int keep_empty, FILE *out,
+ int argc, const char **argv)
+{
+ char *format = NULL;
+ struct pretty_print_context pp = {0};
+ struct strbuf buf = STRBUF_INIT;
+ struct rev_info revs;
+ struct commit *commit;
+
+ init_revisions(&revs, NULL);
+ revs.verbose_header = 1;
+ revs.max_parents = 1;
+ revs.cherry_pick = 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();
+
+ if (setup_revisions(argc, argv, &revs, NULL) > 1)
+ return error(_("make_script: unhandled options"));
+
+ if (prepare_revision_walk(&revs) < 0)
+ return error(_("make_script: error preparing revisions"));
+
+ while ((commit = get_revision(&revs))) {
+ strbuf_reset(&buf);
+ if (!keep_empty && is_original_commit_empty(commit))
+ strbuf_addf(&buf, "%c ", comment_line_char);
+ strbuf_addf(&buf, "pick %s ", oid_to_hex(&commit->object.oid));
+ pretty_print_commit(&pp, commit, &buf);
+ strbuf_addch(&buf, '\n');
+ fputs(buf.buf, out);
+ }
+ strbuf_release(&buf);
+ return 0;
+}
+
+
+int transform_todo_ids(int shorten_ids)
+{
+ const char *todo_file = rebase_path_todo();
+ struct todo_list todo_list = TODO_LIST_INIT;
+ int fd, res, i;
+ FILE *out;
+
+ strbuf_reset(&todo_list.buf);
+ fd = open(todo_file, O_RDONLY);
+ if (fd < 0)
+ return error_errno(_("could not open '%s'"), todo_file);
+ if (strbuf_read(&todo_list.buf, fd, 0) < 0) {
+ close(fd);
+ return error(_("could not read '%s'."), todo_file);
+ }
+ close(fd);
+
+ res = parse_insn_buffer(todo_list.buf.buf, &todo_list);
+ if (res) {
+ todo_list_release(&todo_list);
+ return error(_("unusable todo list: '%s'"), todo_file);
+ }
+
+ out = fopen(todo_file, "w");
+ if (!out) {
+ todo_list_release(&todo_list);
+ return error(_("unable to open '%s' for writing"), todo_file);
+ }
+ for (i = 0; i < todo_list.nr; i++) {
+ struct todo_item *item = todo_list.items + i;
+ int bol = item->offset_in_buf;
+ const char *p = todo_list.buf.buf + bol;
+ int eol = i + 1 < todo_list.nr ?
+ todo_list.items[i + 1].offset_in_buf :
+ todo_list.buf.len;
+
+ if (item->command >= TODO_EXEC && item->command != TODO_DROP)
+ fwrite(p, eol - bol, 1, out);
+ else {
+ const char *id = shorten_ids ?
+ short_commit_name(item->commit) :
+ oid_to_hex(&item->commit->object.oid);
+ int len;
+
+ p += strspn(p, " \t"); /* left-trim command */
+ len = strcspn(p, " \t"); /* length of command */
+
+ fprintf(out, "%.*s %s %.*s\n",
+ len, p, id, item->arg_len, item->arg);
+ }
+ }
+ fclose(out);
+ todo_list_release(&todo_list);
+ return 0;
+}
+
+enum check_level {
+ CHECK_IGNORE = 0, CHECK_WARN, CHECK_ERROR
+};
+
+static enum check_level get_missing_commit_check_level(void)
+{
+ const char *value;
+
+ if (git_config_get_value("rebase.missingcommitscheck", &value) ||
+ !strcasecmp("ignore", value))
+ return CHECK_IGNORE;
+ if (!strcasecmp("warn", value))
+ return CHECK_WARN;
+ if (!strcasecmp("error", value))
+ return CHECK_ERROR;
+ warning(_("unrecognized setting %s for option"
+ "rebase.missingCommitsCheck. Ignoring."), value);
+ return CHECK_IGNORE;
+}
+
+/*
+ * Check if the user dropped some commits by mistake
+ * Behaviour determined by rebase.missingCommitsCheck.
+ * Check if there is an unrecognized command or a
+ * bad SHA-1 in a command.
+ */
+int check_todo_list(void)
+{
+ enum check_level check_level = get_missing_commit_check_level();
+ struct strbuf todo_file = STRBUF_INIT;
+ struct todo_list todo_list = TODO_LIST_INIT;
+ struct strbuf missing = STRBUF_INIT;
+ int advise_to_edit_todo = 0, res = 0, fd, i;
+
+ strbuf_addstr(&todo_file, rebase_path_todo());
+ fd = open(todo_file.buf, O_RDONLY);
+ if (fd < 0) {
+ res = error_errno(_("could not open '%s'"), todo_file.buf);
+ goto leave_check;
+ }
+ if (strbuf_read(&todo_list.buf, fd, 0) < 0) {
+ close(fd);
+ res = error(_("could not read '%s'."), todo_file.buf);
+ goto leave_check;
+ }
+ close(fd);
+ advise_to_edit_todo = res =
+ parse_insn_buffer(todo_list.buf.buf, &todo_list);
+
+ if (res || check_level == CHECK_IGNORE)
+ goto leave_check;
+
+ /* Mark the commits in git-rebase-todo as seen */
+ for (i = 0; i < todo_list.nr; i++) {
+ struct commit *commit = todo_list.items[i].commit;
+ if (commit)
+ commit->util = (void *)1;
+ }
+
+ todo_list_release(&todo_list);
+ strbuf_addstr(&todo_file, ".backup");
+ fd = open(todo_file.buf, O_RDONLY);
+ if (fd < 0) {
+ res = error_errno(_("could not open '%s'"), todo_file.buf);
+ goto leave_check;
+ }
+ if (strbuf_read(&todo_list.buf, fd, 0) < 0) {
+ close(fd);
+ res = error(_("could not read '%s'."), todo_file.buf);
+ goto leave_check;
+ }
+ close(fd);
+ strbuf_release(&todo_file);
+ res = !!parse_insn_buffer(todo_list.buf.buf, &todo_list);
+
+ /* Find commits in git-rebase-todo.backup yet unseen */
+ for (i = todo_list.nr - 1; i >= 0; i--) {
+ struct todo_item *item = todo_list.items + i;
+ struct commit *commit = item->commit;
+ if (commit && !commit->util) {
+ strbuf_addf(&missing, " - %s %.*s\n",
+ short_commit_name(commit),
+ item->arg_len, item->arg);
+ commit->util = (void *)1;
+ }
+ }
+
+ /* Warn about missing commits */
+ if (!missing.len)
+ goto leave_check;
+
+ if (check_level == CHECK_ERROR)
+ advise_to_edit_todo = res = 1;
+
+ fprintf(stderr,
+ _("Warning: some commits may have been dropped accidentally.\n"
+ "Dropped commits (newer to older):\n"));
+
+ /* Make the list user-friendly and display */
+ fputs(missing.buf, stderr);
+ strbuf_release(&missing);
+
+ fprintf(stderr, _("To avoid this message, use \"drop\" to "
+ "explicitly remove a commit.\n\n"
+ "Use 'git config rebase.missingCommitsCheck' to change "
+ "the level of warnings.\n"
+ "The possible behaviours are: ignore, warn, error.\n\n"));
+
+leave_check:
+ strbuf_release(&todo_file);
+ todo_list_release(&todo_list);
+
+ if (advise_to_edit_todo)
+ fprintf(stderr,
+ _("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"));
+
+ return res;
+}
+
+/* skip picking commits whose parents are unchanged */
+int skip_unnecessary_picks(void)
+{
+ const char *todo_file = rebase_path_todo();
+ struct strbuf buf = STRBUF_INIT;
+ struct todo_list todo_list = TODO_LIST_INIT;
+ struct object_id onto_oid, *oid = &onto_oid, *parent_oid;
+ int fd, i;
+
+ if (!read_oneliner(&buf, rebase_path_onto(), 0))
+ return error(_("could not read 'onto'"));
+ if (get_oid(buf.buf, &onto_oid)) {
+ strbuf_release(&buf);
+ return error(_("need a HEAD to fixup"));
+ }
+ strbuf_release(&buf);
+
+ fd = open(todo_file, O_RDONLY);
+ if (fd < 0) {
+ return error_errno(_("could not open '%s'"), todo_file);
+ }
+ if (strbuf_read(&todo_list.buf, fd, 0) < 0) {
+ close(fd);
+ return error(_("could not read '%s'."), todo_file);
+ }
+ close(fd);
+ if (parse_insn_buffer(todo_list.buf.buf, &todo_list) < 0) {
+ todo_list_release(&todo_list);
+ return -1;
+ }
+
+ for (i = 0; i < todo_list.nr; i++) {
+ struct todo_item *item = todo_list.items + i;
+
+ if (item->command >= TODO_NOOP)
+ continue;
+ if (item->command != TODO_PICK)
+ break;
+ if (parse_commit(item->commit)) {
+ todo_list_release(&todo_list);
+ 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 (hashcmp(parent_oid->hash, oid->hash))
+ break;
+ oid = &item->commit->object.oid;
+ }
+ if (i > 0) {
+ int offset = i < todo_list.nr ?
+ todo_list.items[i].offset_in_buf : todo_list.buf.len;
+ const char *done_path = rebase_path_done();
+
+ fd = open(done_path, O_CREAT | O_WRONLY | O_APPEND, 0666);
+ if (fd < 0) {
+ error_errno(_("could not open '%s' for writing"),
+ done_path);
+ todo_list_release(&todo_list);
+ return -1;
+ }
+ if (write_in_full(fd, todo_list.buf.buf, offset) < 0) {
+ error_errno(_("could not write to '%s'"), done_path);
+ todo_list_release(&todo_list);
+ close(fd);
+ return -1;
+ }
+ close(fd);
+
+ fd = open(rebase_path_todo(), O_WRONLY, 0666);
+ if (fd < 0) {
+ error_errno(_("could not open '%s' for writing"),
+ rebase_path_todo());
+ todo_list_release(&todo_list);
+ return -1;
+ }
+ if (write_in_full(fd, todo_list.buf.buf + offset,
+ todo_list.buf.len - offset) < 0) {
+ error_errno(_("could not write to '%s'"),
+ rebase_path_todo());
+ close(fd);
+ todo_list_release(&todo_list);
+ return -1;
+ }
+ if (ftruncate(fd, todo_list.buf.len - offset) < 0) {
+ error_errno(_("could not truncate '%s'"),
+ rebase_path_todo());
+ todo_list_release(&todo_list);
+ close(fd);
+ return -1;
+ }
+ close(fd);
+
+ todo_list.current = i;
+ if (is_fixup(peek_command(&todo_list, 0)))
+ record_in_rewritten(oid, peek_command(&todo_list, 0));
+ }
+
+ todo_list_release(&todo_list);
+ printf("%s\n", oid_to_hex(oid));
+
+ return 0;
+}
+
+struct subject2item_entry {
+ struct hashmap_entry entry;
+ int i;
+ char subject[FLEX_ARRAY];
+};
+
+static int subject2item_cmp(const void *fndata,
+ const struct subject2item_entry *a,
+ const struct subject2item_entry *b, const void *key)
+{
+ return key ? strcmp(a->subject, key) : strcmp(a->subject, b->subject);
+}
+
+/*
+ * 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 rearrange_squash(void)
+{
+ const char *todo_file = rebase_path_todo();
+ struct todo_list todo_list = TODO_LIST_INIT;
+ struct hashmap subject2item;
+ int res = 0, rearranged = 0, *next, *tail, fd, i;
+ char **subjects;
+
+ fd = open(todo_file, O_RDONLY);
+ if (fd < 0)
+ return error_errno(_("could not open '%s'"), todo_file);
+ if (strbuf_read(&todo_list.buf, fd, 0) < 0) {
+ close(fd);
+ return error(_("could not read '%s'."), todo_file);
+ }
+ close(fd);
+ if (parse_insn_buffer(todo_list.buf.buf, &todo_list) < 0) {
+ todo_list_release(&todo_list);
+ return -1;
+ }
+
+ /*
+ * 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.
+ */
+ hashmap_init(&subject2item, (hashmap_cmp_fn) 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->command >= TODO_EXEC) {
+ subjects[i] = NULL;
+ continue;
+ }
+
+ if (is_fixup(item->command)) {
+ todo_list_release(&todo_list);
+ return error(_("the script was already rearranged."));
+ }
+
+ item->commit->util = item;
+
+ parse_commit(item->commit);
+ commit_buffer = get_commit_buffer(item->commit, NULL);
+ 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;
+ }
+
+ if ((entry = hashmap_get_from_hash(&subject2item,
+ strhash(p), p)))
+ /* found by title */
+ i2 = entry->i;
+ else if (!strchr(p, ' ') &&
+ (commit2 =
+ lookup_commit_reference_by_name(p)) &&
+ commit2->util)
+ /* found by commit name */
+ i2 = (struct todo_item *)commit2->util
+ - 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, strhash(entry->subject));
+ hashmap_put(&subject2item, entry);
+ }
+ }
+
+ if (rearranged) {
+ struct strbuf buf = STRBUF_INIT;
+
+ for (i = 0; i < todo_list.nr; i++) {
+ enum todo_command command = todo_list.items[i].command;
+ int cur = i;
+
+ /*
+ * Initially, all commands are 'pick's. If it is a
+ * fixup or a squash now, we have rearranged it.
+ */
+ if (is_fixup(command))
+ continue;
+
+ while (cur >= 0) {
+ int offset = todo_list.items[cur].offset_in_buf;
+ int end_offset = cur + 1 < todo_list.nr ?
+ todo_list.items[cur + 1].offset_in_buf :
+ todo_list.buf.len;
+ char *bol = todo_list.buf.buf + offset;
+ char *eol = todo_list.buf.buf + end_offset;
+
+ /* replace 'pick', by 'fixup' or 'squash' */
+ command = todo_list.items[cur].command;
+ if (is_fixup(command)) {
+ strbuf_addstr(&buf,
+ todo_command_info[command].str);
+ bol += strcspn(bol, " \t");
+ }
+
+ strbuf_add(&buf, bol, eol - bol);
+
+ cur = next[cur];
+ }
+ }
+
+ fd = open(todo_file, O_WRONLY);
+ if (fd < 0)
+ res = error_errno(_("could not open '%s'"), todo_file);
+ else if (write(fd, buf.buf, buf.len) < 0)
+ res = error_errno(_("could not read '%s'."), todo_file);
+ else if (ftruncate(fd, buf.len) < 0)
+ res = error_errno(_("could not finish '%s'"),
+ todo_file);
+ close(fd);
+ strbuf_release(&buf);
+ }
+
+ free(next);
+ free(tail);
+ for (i = 0; i < todo_list.nr; i++)
+ free(subjects[i]);
+ free(subjects);
+ hashmap_free(&subject2item, 1);
+ todo_list_release(&todo_list);
+
+ return res;
+}
OSDN Git Service
