static int rebase_setupfiles_merge(git_rebase *rebase)
{
git_buf commit_filename = GIT_BUF_INIT;
char id_str[GIT_OID_HEXSZ];
git_rebase_operation *operation;
size_t i;
int error = 0;
if ((error = rebase_setupfile(rebase, END_FILE, -1, "%" PRIuZ "\n", git_array_size(rebase->operations))) < 0 ||
(error = rebase_setupfile(rebase, ONTO_NAME_FILE, -1, "%s\n", rebase->onto_name)) < 0)
goto done;
for (i = 0; i < git_array_size(rebase->operations); i++) {
operation = git_array_get(rebase->operations, i);
git_buf_clear(&commit_filename);
git_buf_printf(&commit_filename, CMT_FILE_FMT, i+1);
git_oid_fmt(id_str, &operation->id);
if ((error = rebase_setupfile(rebase, commit_filename.ptr, -1,
"%.*s\n", GIT_OID_HEXSZ, id_str)) < 0)
goto done;
}
done:
git_buf_free(&commit_filename);
return error;
}
static int rebase_setupfiles(git_rebase *rebase)
{
char onto[GIT_OID_HEXSZ], orig_head[GIT_OID_HEXSZ];
const char *orig_head_name;
git_oid_fmt(onto, &rebase->onto_id);
git_oid_fmt(orig_head, &rebase->orig_head_id);
if (p_mkdir(rebase->state_path, REBASE_DIR_MODE) < 0) {
giterr_set(GITERR_OS, "Failed to create rebase directory '%s'", rebase->state_path);
return -1;
}
orig_head_name = rebase->head_detached ? ORIG_DETACHED_HEAD :
rebase->orig_head_name;
if (git_repository__set_orig_head(rebase->repo, &rebase->orig_head_id) < 0 ||
rebase_setupfile(rebase, HEAD_NAME_FILE, -1, "%s\n", orig_head_name) < 0 ||
rebase_setupfile(rebase, ONTO_FILE, -1, "%.*s\n", GIT_OID_HEXSZ, onto) < 0 ||
rebase_setupfile(rebase, ORIG_HEAD_FILE, -1, "%.*s\n", GIT_OID_HEXSZ, orig_head) < 0 ||
rebase_setupfile(rebase, QUIET_FILE, -1, rebase->quiet ? "t\n" : "\n") < 0)
return -1;
return rebase_setupfiles_merge(rebase);
}
static int rebase_commit_merge(
git_oid *commit_id,
git_rebase *rebase,
const git_signature *author,
const git_signature *committer,
const char *message_encoding,
const char *message)
{
git_rebase_operation *operation;
git_reference *head = NULL;
git_commit *head_commit = NULL, *commit = NULL;
git_index *index = NULL;
char old_idstr[GIT_OID_HEXSZ], new_idstr[GIT_OID_HEXSZ];
int error;
operation = git_array_get(rebase->operations, rebase->current);
assert(operation);
if ((error = rebase_ensure_not_dirty(rebase->repo, false, true, GIT_EUNMERGED)) < 0 ||
(error = git_repository_head(&head, rebase->repo)) < 0 ||
(error = git_reference_peel((git_object **)&head_commit, head, GIT_OBJ_COMMIT)) < 0 ||
(error = git_repository_index(&index, rebase->repo)) < 0 ||
(error = rebase_commit__create(&commit, rebase, index, head_commit,
author, committer, message_encoding, message)) < 0 ||
(error = git_reference__update_for_commit(
rebase->repo, NULL, "HEAD", git_commit_id(commit), "rebase")) < 0)
goto done;
git_oid_fmt(old_idstr, &operation->id);
git_oid_fmt(new_idstr, git_commit_id(commit));
if ((error = rebase_setupfile(rebase, REWRITTEN_FILE, O_CREAT|O_WRONLY|O_APPEND,
"%.*s %.*s\n", GIT_OID_HEXSZ, old_idstr, GIT_OID_HEXSZ, new_idstr)) < 0)
goto done;
git_oid_cpy(commit_id, git_commit_id(commit));
done:
git_index_free(index);
git_reference_free(head);
git_commit_free(head_commit);
git_commit_free(commit);
return error;
}
static int rebase_next_merge(
git_rebase_operation **out,
git_rebase *rebase)
{
git_buf path = GIT_BUF_INIT;
git_commit *current_commit = NULL, *parent_commit = NULL;
git_tree *current_tree = NULL, *head_tree = NULL, *parent_tree = NULL;
git_index *index = NULL;
git_indexwriter indexwriter = GIT_INDEXWRITER_INIT;
git_rebase_operation *operation;
git_checkout_options checkout_opts;
char current_idstr[GIT_OID_HEXSZ];
unsigned int parent_count;
int error;
*out = NULL;
operation = git_array_get(rebase->operations, rebase->current);
if ((error = git_commit_lookup(¤t_commit, rebase->repo, &operation->id)) < 0 ||
(error = git_commit_tree(¤t_tree, current_commit)) < 0 ||
(error = git_repository_head_tree(&head_tree, rebase->repo)) < 0)
goto done;
if ((parent_count = git_commit_parentcount(current_commit)) > 1) {
giterr_set(GITERR_REBASE, "Cannot rebase a merge commit");
error = -1;
goto done;
} else if (parent_count) {
if ((error = git_commit_parent(&parent_commit, current_commit, 0)) < 0 ||
(error = git_commit_tree(&parent_tree, parent_commit)) < 0)
goto done;
}
git_oid_fmt(current_idstr, &operation->id);
normalize_checkout_options_for_apply(&checkout_opts, rebase, current_commit);
if ((error = git_indexwriter_init_for_operation(&indexwriter, rebase->repo, &checkout_opts.checkout_strategy)) < 0 ||
(error = rebase_setupfile(rebase, MSGNUM_FILE, -1, "%" PRIuZ "\n", rebase->current+1)) < 0 ||
(error = rebase_setupfile(rebase, CURRENT_FILE, -1, "%.*s\n", GIT_OID_HEXSZ, current_idstr)) < 0 ||
(error = git_merge_trees(&index, rebase->repo, parent_tree, head_tree, current_tree, &rebase->options.merge_options)) < 0 ||
(error = git_merge__check_result(rebase->repo, index)) < 0 ||
(error = git_checkout_index(rebase->repo, index, &checkout_opts)) < 0 ||
(error = git_indexwriter_commit(&indexwriter)) < 0)
goto done;
*out = operation;
done:
git_indexwriter_cleanup(&indexwriter);
git_index_free(index);
git_tree_free(current_tree);
git_tree_free(head_tree);
git_tree_free(parent_tree);
git_commit_free(parent_commit);
git_commit_free(current_commit);
git_buf_free(&path);
return error;
}
static int rebase_commit_merge(
git_oid *commit_id,
git_rebase *rebase,
const git_signature *author,
const git_signature *committer,
const char *message_encoding,
const char *message)
{
git_index *index = NULL;
git_reference *head = NULL;
git_commit *current_commit = NULL, *head_commit = NULL, *commit = NULL;
git_rebase_operation *operation;
git_tree *head_tree = NULL, *tree = NULL;
git_diff *diff = NULL;
git_oid tree_id;
git_buf reflog_msg = GIT_BUF_INIT;
char old_idstr[GIT_OID_HEXSZ], new_idstr[GIT_OID_HEXSZ];
int error;
operation = git_array_get(rebase->operations, rebase->current);
assert(operation);
if ((error = git_repository_index(&index, rebase->repo)) < 0)
goto done;
if (git_index_has_conflicts(index)) {
giterr_set(GITERR_REBASE, "Conflicts have not been resolved");
error = GIT_EMERGECONFLICT;
goto done;
}
if ((error = git_commit_lookup(¤t_commit, rebase->repo, &operation->id)) < 0 ||
(error = git_repository_head(&head, rebase->repo)) < 0 ||
(error = git_reference_peel((git_object **)&head_commit, head, GIT_OBJ_COMMIT)) < 0 ||
(error = git_commit_tree(&head_tree, head_commit)) < 0 ||
(error = git_diff_tree_to_index(&diff, rebase->repo, head_tree, index, NULL)) < 0)
goto done;
if (git_diff_num_deltas(diff) == 0) {
giterr_set(GITERR_REBASE, "This patch has already been applied");
error = GIT_EAPPLIED;
goto done;
}
if ((error = git_index_write_tree(&tree_id, index)) < 0 ||
(error = git_tree_lookup(&tree, rebase->repo, &tree_id)) < 0)
goto done;
if (!author)
author = git_commit_author(current_commit);
if (!message) {
message_encoding = git_commit_message_encoding(current_commit);
message = git_commit_message(current_commit);
}
if ((error = git_commit_create(commit_id, rebase->repo, NULL, author,
committer, message_encoding, message, tree, 1,
(const git_commit **)&head_commit)) < 0 ||
(error = git_commit_lookup(&commit, rebase->repo, commit_id)) < 0 ||
(error = git_reference__update_for_commit(
rebase->repo, NULL, "HEAD", commit_id, "rebase")) < 0)
goto done;
git_oid_fmt(old_idstr, git_commit_id(current_commit));
git_oid_fmt(new_idstr, commit_id);
error = rebase_setupfile(rebase, REWRITTEN_FILE, O_CREAT|O_WRONLY|O_APPEND,
"%.*s %.*s\n", GIT_OID_HEXSZ, old_idstr, GIT_OID_HEXSZ, new_idstr);
done:
git_buf_free(&reflog_msg);
git_commit_free(commit);
git_diff_free(diff);
git_tree_free(tree);
git_tree_free(head_tree);
git_commit_free(head_commit);
git_commit_free(current_commit);
git_reference_free(head);
git_index_free(index);
return error;
}