diff options
Diffstat (limited to '')
| -rw-r--r-- | notes-merge.c | 761 |
1 files changed, 761 insertions, 0 deletions
diff --git a/notes-merge.c b/notes-merge.c new file mode 100644 index 0000000..8799b52 --- /dev/null +++ b/notes-merge.c @@ -0,0 +1,761 @@ +#include "git-compat-util.h" +#include "advice.h" +#include "commit.h" +#include "gettext.h" +#include "refs.h" +#include "object-file.h" +#include "object-name.h" +#include "object-store-ll.h" +#include "path.h" +#include "repository.h" +#include "diff.h" +#include "diffcore.h" +#include "hex.h" +#include "xdiff-interface.h" +#include "merge-ll.h" +#include "dir.h" +#include "notes.h" +#include "notes-merge.h" +#include "strbuf.h" +#include "trace.h" +#include "notes-utils.h" +#include "commit-reach.h" + +struct notes_merge_pair { + struct object_id obj, base, local, remote; +}; + +void init_notes_merge_options(struct repository *r, + struct notes_merge_options *o) +{ + memset(o, 0, sizeof(struct notes_merge_options)); + strbuf_init(&(o->commit_msg), 0); + o->verbosity = NOTES_MERGE_VERBOSITY_DEFAULT; + o->repo = r; +} + +static int path_to_oid(const char *path, struct object_id *oid) +{ + char hex_oid[GIT_MAX_HEXSZ]; + int i = 0; + while (*path && i < the_hash_algo->hexsz) { + if (*path != '/') + hex_oid[i++] = *path; + path++; + } + if (*path || i != the_hash_algo->hexsz) + return -1; + return get_oid_hex(hex_oid, oid); +} + +static int verify_notes_filepair(struct diff_filepair *p, struct object_id *oid) +{ + switch (p->status) { + case DIFF_STATUS_MODIFIED: + assert(p->one->mode == p->two->mode); + assert(!is_null_oid(&p->one->oid)); + assert(!is_null_oid(&p->two->oid)); + break; + case DIFF_STATUS_ADDED: + assert(is_null_oid(&p->one->oid)); + break; + case DIFF_STATUS_DELETED: + assert(is_null_oid(&p->two->oid)); + break; + default: + return -1; + } + assert(!strcmp(p->one->path, p->two->path)); + return path_to_oid(p->one->path, oid); +} + +static struct notes_merge_pair *find_notes_merge_pair_pos( + struct notes_merge_pair *list, int len, struct object_id *obj, + int insert_new, int *occupied) +{ + /* + * Both diff_tree_remote() and diff_tree_local() tend to process + * merge_pairs in ascending order. Therefore, cache last returned + * index, and search sequentially from there until the appropriate + * position is found. + * + * Since inserts only happen from diff_tree_remote() (which mainly + * _appends_), we don't care that inserting into the middle of the + * list is expensive (using memmove()). + */ + static int last_index; + int i = last_index < len ? last_index : len - 1; + int prev_cmp = 0, cmp = -1; + while (i >= 0 && i < len) { + cmp = oidcmp(obj, &list[i].obj); + if (!cmp) /* obj belongs @ i */ + break; + else if (cmp < 0 && prev_cmp <= 0) /* obj belongs < i */ + i--; + else if (cmp < 0) /* obj belongs between i-1 and i */ + break; + else if (cmp > 0 && prev_cmp >= 0) /* obj belongs > i */ + i++; + else /* if (cmp > 0) */ { /* obj belongs between i and i+1 */ + i++; + break; + } + prev_cmp = cmp; + } + if (i < 0) + i = 0; + /* obj belongs at, or immediately preceding, index i (0 <= i <= len) */ + + if (!cmp) + *occupied = 1; + else { + *occupied = 0; + if (insert_new && i < len) { + MOVE_ARRAY(list + i + 1, list + i, len - i); + memset(list + i, 0, sizeof(struct notes_merge_pair)); + } + } + last_index = i; + return list + i; +} + +static struct object_id uninitialized = { + .hash = + "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" \ + "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" +}; + +static struct notes_merge_pair *diff_tree_remote(struct notes_merge_options *o, + const struct object_id *base, + const struct object_id *remote, + int *num_changes) +{ + struct diff_options opt; + struct notes_merge_pair *changes; + int i, len = 0; + + trace_printf("\tdiff_tree_remote(base = %.7s, remote = %.7s)\n", + oid_to_hex(base), oid_to_hex(remote)); + + repo_diff_setup(o->repo, &opt); + opt.flags.recursive = 1; + opt.output_format = DIFF_FORMAT_NO_OUTPUT; + diff_setup_done(&opt); + diff_tree_oid(base, remote, "", &opt); + diffcore_std(&opt); + + CALLOC_ARRAY(changes, diff_queued_diff.nr); + + for (i = 0; i < diff_queued_diff.nr; i++) { + struct diff_filepair *p = diff_queued_diff.queue[i]; + struct notes_merge_pair *mp; + int occupied; + struct object_id obj; + + if (verify_notes_filepair(p, &obj)) { + trace_printf("\t\tCannot merge entry '%s' (%c): " + "%.7s -> %.7s. Skipping!\n", p->one->path, + p->status, oid_to_hex(&p->one->oid), + oid_to_hex(&p->two->oid)); + continue; + } + mp = find_notes_merge_pair_pos(changes, len, &obj, 1, &occupied); + if (occupied) { + /* We've found an addition/deletion pair */ + assert(oideq(&mp->obj, &obj)); + if (is_null_oid(&p->one->oid)) { /* addition */ + assert(is_null_oid(&mp->remote)); + oidcpy(&mp->remote, &p->two->oid); + } else if (is_null_oid(&p->two->oid)) { /* deletion */ + assert(is_null_oid(&mp->base)); + oidcpy(&mp->base, &p->one->oid); + } else + assert(!"Invalid existing change recorded"); + } else { + oidcpy(&mp->obj, &obj); + oidcpy(&mp->base, &p->one->oid); + oidcpy(&mp->local, &uninitialized); + oidcpy(&mp->remote, &p->two->oid); + len++; + } + trace_printf("\t\tStored remote change for %s: %.7s -> %.7s\n", + oid_to_hex(&mp->obj), oid_to_hex(&mp->base), + oid_to_hex(&mp->remote)); + } + diff_flush(&opt); + + *num_changes = len; + return changes; +} + +static void diff_tree_local(struct notes_merge_options *o, + struct notes_merge_pair *changes, int len, + const struct object_id *base, + const struct object_id *local) +{ + struct diff_options opt; + int i; + + trace_printf("\tdiff_tree_local(len = %i, base = %.7s, local = %.7s)\n", + len, oid_to_hex(base), oid_to_hex(local)); + + repo_diff_setup(o->repo, &opt); + opt.flags.recursive = 1; + opt.output_format = DIFF_FORMAT_NO_OUTPUT; + diff_setup_done(&opt); + diff_tree_oid(base, local, "", &opt); + diffcore_std(&opt); + + for (i = 0; i < diff_queued_diff.nr; i++) { + struct diff_filepair *p = diff_queued_diff.queue[i]; + struct notes_merge_pair *mp; + int match; + struct object_id obj; + + if (verify_notes_filepair(p, &obj)) { + trace_printf("\t\tCannot merge entry '%s' (%c): " + "%.7s -> %.7s. Skipping!\n", p->one->path, + p->status, oid_to_hex(&p->one->oid), + oid_to_hex(&p->two->oid)); + continue; + } + mp = find_notes_merge_pair_pos(changes, len, &obj, 0, &match); + if (!match) { + trace_printf("\t\tIgnoring local-only change for %s: " + "%.7s -> %.7s\n", oid_to_hex(&obj), + oid_to_hex(&p->one->oid), + oid_to_hex(&p->two->oid)); + continue; + } + + assert(oideq(&mp->obj, &obj)); + if (is_null_oid(&p->two->oid)) { /* deletion */ + /* + * Either this is a true deletion (1), or it is part + * of an A/D pair (2), or D/A pair (3): + * + * (1) mp->local is uninitialized; set it to null_sha1 + * (2) mp->local is not uninitialized; don't touch it + * (3) mp->local is uninitialized; set it to null_sha1 + * (will be overwritten by following addition) + */ + if (oideq(&mp->local, &uninitialized)) + oidclr(&mp->local); + } else if (is_null_oid(&p->one->oid)) { /* addition */ + /* + * Either this is a true addition (1), or it is part + * of an A/D pair (2), or D/A pair (3): + * + * (1) mp->local is uninitialized; set to p->two->sha1 + * (2) mp->local is uninitialized; set to p->two->sha1 + * (3) mp->local is null_sha1; set to p->two->sha1 + */ + assert(is_null_oid(&mp->local) || + oideq(&mp->local, &uninitialized)); + oidcpy(&mp->local, &p->two->oid); + } else { /* modification */ + /* + * This is a true modification. p->one->sha1 shall + * match mp->base, and mp->local shall be uninitialized. + * Set mp->local to p->two->sha1. + */ + assert(oideq(&p->one->oid, &mp->base)); + assert(oideq(&mp->local, &uninitialized)); + oidcpy(&mp->local, &p->two->oid); + } + trace_printf("\t\tStored local change for %s: %.7s -> %.7s\n", + oid_to_hex(&mp->obj), oid_to_hex(&mp->base), + oid_to_hex(&mp->local)); + } + diff_flush(&opt); +} + +static void check_notes_merge_worktree(struct notes_merge_options *o) +{ + if (!o->has_worktree) { + /* + * Must establish NOTES_MERGE_WORKTREE. + * Abort if NOTES_MERGE_WORKTREE already exists + */ + if (file_exists(git_path(NOTES_MERGE_WORKTREE)) && + !is_empty_dir(git_path(NOTES_MERGE_WORKTREE))) { + if (advice_enabled(ADVICE_RESOLVE_CONFLICT)) + die(_("You have not concluded your previous " + "notes merge (%s exists).\nPlease, use " + "'git notes merge --commit' or 'git notes " + "merge --abort' to commit/abort the " + "previous merge before you start a new " + "notes merge."), git_path("NOTES_MERGE_*")); + else + die(_("You have not concluded your notes merge " + "(%s exists)."), git_path("NOTES_MERGE_*")); + } + + if (safe_create_leading_directories_const(git_path( + NOTES_MERGE_WORKTREE "/.test"))) + die_errno("unable to create directory %s", + git_path(NOTES_MERGE_WORKTREE)); + o->has_worktree = 1; + } else if (!file_exists(git_path(NOTES_MERGE_WORKTREE))) + /* NOTES_MERGE_WORKTREE should already be established */ + die("missing '%s'. This should not happen", + git_path(NOTES_MERGE_WORKTREE)); +} + +static void write_buf_to_worktree(const struct object_id *obj, + const char *buf, unsigned long size) +{ + int fd; + char *path = git_pathdup(NOTES_MERGE_WORKTREE "/%s", oid_to_hex(obj)); + if (safe_create_leading_directories_const(path)) + die_errno("unable to create directory for '%s'", path); + + fd = xopen(path, O_WRONLY | O_EXCL | O_CREAT, 0666); + + while (size > 0) { + ssize_t ret = write_in_full(fd, buf, size); + if (ret < 0) { + /* Ignore epipe */ + if (errno == EPIPE) + break; + die_errno("notes-merge"); + } + size -= ret; + buf += ret; + } + + close(fd); + free(path); +} + +static void write_note_to_worktree(const struct object_id *obj, + const struct object_id *note) +{ + enum object_type type; + unsigned long size; + void *buf = repo_read_object_file(the_repository, note, &type, &size); + + if (!buf) + die("cannot read note %s for object %s", + oid_to_hex(note), oid_to_hex(obj)); + if (type != OBJ_BLOB) + die("blob expected in note %s for object %s", + oid_to_hex(note), oid_to_hex(obj)); + write_buf_to_worktree(obj, buf, size); + free(buf); +} + +static int ll_merge_in_worktree(struct notes_merge_options *o, + struct notes_merge_pair *p) +{ + mmbuffer_t result_buf; + mmfile_t base, local, remote; + enum ll_merge_result status; + + read_mmblob(&base, &p->base); + read_mmblob(&local, &p->local); + read_mmblob(&remote, &p->remote); + + status = ll_merge(&result_buf, oid_to_hex(&p->obj), &base, NULL, + &local, o->local_ref, &remote, o->remote_ref, + o->repo->index, NULL); + + free(base.ptr); + free(local.ptr); + free(remote.ptr); + + if (status == LL_MERGE_BINARY_CONFLICT) + warning("Cannot merge binary files: %s (%s vs. %s)", + oid_to_hex(&p->obj), o->local_ref, o->remote_ref); + if ((status < 0) || !result_buf.ptr) + die("Failed to execute internal merge"); + + write_buf_to_worktree(&p->obj, result_buf.ptr, result_buf.size); + free(result_buf.ptr); + + return status; +} + +static int merge_one_change_manual(struct notes_merge_options *o, + struct notes_merge_pair *p, + struct notes_tree *t) +{ + const char *lref = o->local_ref ? o->local_ref : "local version"; + const char *rref = o->remote_ref ? o->remote_ref : "remote version"; + + trace_printf("\t\t\tmerge_one_change_manual(obj = %.7s, base = %.7s, " + "local = %.7s, remote = %.7s)\n", + oid_to_hex(&p->obj), oid_to_hex(&p->base), + oid_to_hex(&p->local), oid_to_hex(&p->remote)); + + /* add "Conflicts:" section to commit message first time through */ + if (!o->has_worktree) + strbuf_addstr(&(o->commit_msg), "\n\nConflicts:\n"); + + strbuf_addf(&(o->commit_msg), "\t%s\n", oid_to_hex(&p->obj)); + + if (o->verbosity >= 2) + printf("Auto-merging notes for %s\n", oid_to_hex(&p->obj)); + check_notes_merge_worktree(o); + if (is_null_oid(&p->local)) { + /* D/F conflict, checkout p->remote */ + assert(!is_null_oid(&p->remote)); + if (o->verbosity >= 1) + printf("CONFLICT (delete/modify): Notes for object %s " + "deleted in %s and modified in %s. Version from %s " + "left in tree.\n", + oid_to_hex(&p->obj), lref, rref, rref); + write_note_to_worktree(&p->obj, &p->remote); + } else if (is_null_oid(&p->remote)) { + /* D/F conflict, checkout p->local */ + assert(!is_null_oid(&p->local)); + if (o->verbosity >= 1) + printf("CONFLICT (delete/modify): Notes for object %s " + "deleted in %s and modified in %s. Version from %s " + "left in tree.\n", + oid_to_hex(&p->obj), rref, lref, lref); + write_note_to_worktree(&p->obj, &p->local); + } else { + /* "regular" conflict, checkout result of ll_merge() */ + const char *reason = "content"; + if (is_null_oid(&p->base)) + reason = "add/add"; + assert(!is_null_oid(&p->local)); + assert(!is_null_oid(&p->remote)); + if (o->verbosity >= 1) + printf("CONFLICT (%s): Merge conflict in notes for " + "object %s\n", reason, + oid_to_hex(&p->obj)); + ll_merge_in_worktree(o, p); + } + + trace_printf("\t\t\tremoving from partial merge result\n"); + remove_note(t, p->obj.hash); + + return 1; +} + +static int merge_one_change(struct notes_merge_options *o, + struct notes_merge_pair *p, struct notes_tree *t) +{ + /* + * Return 0 if change is successfully resolved (stored in notes_tree). + * Return 1 is change results in a conflict (NOT stored in notes_tree, + * but instead written to NOTES_MERGE_WORKTREE with conflict markers). + */ + switch (o->strategy) { + case NOTES_MERGE_RESOLVE_MANUAL: + return merge_one_change_manual(o, p, t); + case NOTES_MERGE_RESOLVE_OURS: + if (o->verbosity >= 2) + printf("Using local notes for %s\n", + oid_to_hex(&p->obj)); + /* nothing to do */ + return 0; + case NOTES_MERGE_RESOLVE_THEIRS: + if (o->verbosity >= 2) + printf("Using remote notes for %s\n", + oid_to_hex(&p->obj)); + if (add_note(t, &p->obj, &p->remote, combine_notes_overwrite)) + BUG("combine_notes_overwrite failed"); + return 0; + case NOTES_MERGE_RESOLVE_UNION: + if (o->verbosity >= 2) + printf("Concatenating local and remote notes for %s\n", + oid_to_hex(&p->obj)); + if (add_note(t, &p->obj, &p->remote, combine_notes_concatenate)) + die("failed to concatenate notes " + "(combine_notes_concatenate)"); + return 0; + case NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ: + if (o->verbosity >= 2) + printf("Concatenating unique lines in local and remote " + "notes for %s\n", oid_to_hex(&p->obj)); + if (add_note(t, &p->obj, &p->remote, combine_notes_cat_sort_uniq)) + die("failed to concatenate notes " + "(combine_notes_cat_sort_uniq)"); + return 0; + } + die("Unknown strategy (%i).", o->strategy); +} + +static int merge_changes(struct notes_merge_options *o, + struct notes_merge_pair *changes, int *num_changes, + struct notes_tree *t) +{ + int i, conflicts = 0; + + trace_printf("\tmerge_changes(num_changes = %i)\n", *num_changes); + for (i = 0; i < *num_changes; i++) { + struct notes_merge_pair *p = changes + i; + trace_printf("\t\t%.7s: %.7s -> %.7s/%.7s\n", + oid_to_hex(&p->obj), oid_to_hex(&p->base), + oid_to_hex(&p->local), + oid_to_hex(&p->remote)); + + if (oideq(&p->base, &p->remote)) { + /* no remote change; nothing to do */ + trace_printf("\t\t\tskipping (no remote change)\n"); + } else if (oideq(&p->local, &p->remote)) { + /* same change in local and remote; nothing to do */ + trace_printf("\t\t\tskipping (local == remote)\n"); + } else if (oideq(&p->local, &uninitialized) || + oideq(&p->local, &p->base)) { + /* no local change; adopt remote change */ + trace_printf("\t\t\tno local change, adopted remote\n"); + if (add_note(t, &p->obj, &p->remote, + combine_notes_overwrite)) + BUG("combine_notes_overwrite failed"); + } else { + /* need file-level merge between local and remote */ + trace_printf("\t\t\tneed content-level merge\n"); + conflicts += merge_one_change(o, p, t); + } + } + + return conflicts; +} + +static int merge_from_diffs(struct notes_merge_options *o, + const struct object_id *base, + const struct object_id *local, + const struct object_id *remote, + struct notes_tree *t) +{ + struct notes_merge_pair *changes; + int num_changes, conflicts; + + trace_printf("\tmerge_from_diffs(base = %.7s, local = %.7s, " + "remote = %.7s)\n", oid_to_hex(base), oid_to_hex(local), + oid_to_hex(remote)); + + changes = diff_tree_remote(o, base, remote, &num_changes); + diff_tree_local(o, changes, num_changes, base, local); + + conflicts = merge_changes(o, changes, &num_changes, t); + free(changes); + + if (o->verbosity >= 4) + printf(t->dirty ? + "Merge result: %i unmerged notes and a dirty notes tree\n" : + "Merge result: %i unmerged notes and a clean notes tree\n", + conflicts); + + return conflicts ? -1 : 1; +} + +int notes_merge(struct notes_merge_options *o, + struct notes_tree *local_tree, + struct object_id *result_oid) +{ + struct object_id local_oid, remote_oid; + struct commit *local, *remote; + struct commit_list *bases = NULL; + const struct object_id *base_oid, *base_tree_oid; + int result = 0; + + assert(o->local_ref && o->remote_ref); + assert(!strcmp(o->local_ref, local_tree->ref)); + oidclr(result_oid); + + trace_printf("notes_merge(o->local_ref = %s, o->remote_ref = %s)\n", + o->local_ref, o->remote_ref); + + /* Dereference o->local_ref into local_sha1 */ + if (read_ref_full(o->local_ref, 0, &local_oid, NULL)) + die("Failed to resolve local notes ref '%s'", o->local_ref); + else if (!check_refname_format(o->local_ref, 0) && + is_null_oid(&local_oid)) + local = NULL; /* local_oid == null_oid indicates unborn ref */ + else if (!(local = lookup_commit_reference(o->repo, &local_oid))) + die("Could not parse local commit %s (%s)", + oid_to_hex(&local_oid), o->local_ref); + trace_printf("\tlocal commit: %.7s\n", oid_to_hex(&local_oid)); + + /* Dereference o->remote_ref into remote_oid */ + if (repo_get_oid(the_repository, o->remote_ref, &remote_oid)) { + /* + * Failed to get remote_oid. If o->remote_ref looks like an + * unborn ref, perform the merge using an empty notes tree. + */ + if (!check_refname_format(o->remote_ref, 0)) { + oidclr(&remote_oid); + remote = NULL; + } else { + die("Failed to resolve remote notes ref '%s'", + o->remote_ref); + } + } else if (!(remote = lookup_commit_reference(o->repo, &remote_oid))) { + die("Could not parse remote commit %s (%s)", + oid_to_hex(&remote_oid), o->remote_ref); + } + trace_printf("\tremote commit: %.7s\n", oid_to_hex(&remote_oid)); + + if (!local && !remote) + die("Cannot merge empty notes ref (%s) into empty notes ref " + "(%s)", o->remote_ref, o->local_ref); + if (!local) { + /* result == remote commit */ + oidcpy(result_oid, &remote_oid); + goto found_result; + } + if (!remote) { + /* result == local commit */ + oidcpy(result_oid, &local_oid); + goto found_result; + } + assert(local && remote); + + /* Find merge bases */ + bases = repo_get_merge_bases(the_repository, local, remote); + if (!bases) { + base_oid = null_oid(); + base_tree_oid = the_hash_algo->empty_tree; + if (o->verbosity >= 4) + printf("No merge base found; doing history-less merge\n"); + } else if (!bases->next) { + base_oid = &bases->item->object.oid; + base_tree_oid = get_commit_tree_oid(bases->item); + if (o->verbosity >= 4) + printf("One merge base found (%.7s)\n", + oid_to_hex(base_oid)); + } else { + /* TODO: How to handle multiple merge-bases? */ + base_oid = &bases->item->object.oid; + base_tree_oid = get_commit_tree_oid(bases->item); + if (o->verbosity >= 3) + printf("Multiple merge bases found. Using the first " + "(%.7s)\n", oid_to_hex(base_oid)); + } + + if (o->verbosity >= 4) + printf("Merging remote commit %.7s into local commit %.7s with " + "merge-base %.7s\n", oid_to_hex(&remote->object.oid), + oid_to_hex(&local->object.oid), + oid_to_hex(base_oid)); + + if (oideq(&remote->object.oid, base_oid)) { + /* Already merged; result == local commit */ + if (o->verbosity >= 2) + printf_ln("Already up to date."); + oidcpy(result_oid, &local->object.oid); + goto found_result; + } + if (oideq(&local->object.oid, base_oid)) { + /* Fast-forward; result == remote commit */ + if (o->verbosity >= 2) + printf("Fast-forward\n"); + oidcpy(result_oid, &remote->object.oid); + goto found_result; + } + + result = merge_from_diffs(o, base_tree_oid, + get_commit_tree_oid(local), + get_commit_tree_oid(remote), local_tree); + + if (result != 0) { /* non-trivial merge (with or without conflicts) */ + /* Commit (partial) result */ + struct commit_list *parents = NULL; + commit_list_insert(remote, &parents); /* LIFO order */ + commit_list_insert(local, &parents); + create_notes_commit(o->repo, local_tree, parents, o->commit_msg.buf, + o->commit_msg.len, result_oid); + } + +found_result: + free_commit_list(bases); + strbuf_release(&(o->commit_msg)); + trace_printf("notes_merge(): result = %i, result_oid = %.7s\n", + result, oid_to_hex(result_oid)); + return result; +} + +int notes_merge_commit(struct notes_merge_options *o, + struct notes_tree *partial_tree, + struct commit *partial_commit, + struct object_id *result_oid) +{ + /* + * Iterate through files in .git/NOTES_MERGE_WORKTREE and add all + * found notes to 'partial_tree'. Write the updated notes tree to + * the DB, and commit the resulting tree object while reusing the + * commit message and parents from 'partial_commit'. + * Finally store the new commit object OID into 'result_oid'. + */ + DIR *dir; + struct dirent *e; + struct strbuf path = STRBUF_INIT; + const char *buffer = repo_get_commit_buffer(the_repository, + partial_commit, NULL); + const char *msg = strstr(buffer, "\n\n"); + int baselen; + + git_path_buf(&path, NOTES_MERGE_WORKTREE); + if (o->verbosity >= 3) + printf("Committing notes in notes merge worktree at %s\n", + path.buf); + + if (!msg || msg[2] == '\0') + die("partial notes commit has empty message"); + msg += 2; + + dir = opendir(path.buf); + if (!dir) + die_errno("could not open %s", path.buf); + + strbuf_addch(&path, '/'); + baselen = path.len; + while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL) { + struct stat st; + struct object_id obj_oid, blob_oid; + + if (get_oid_hex(e->d_name, &obj_oid)) { + if (o->verbosity >= 3) + printf("Skipping non-SHA1 entry '%s%s'\n", + path.buf, e->d_name); + continue; + } + + strbuf_addstr(&path, e->d_name); + /* write file as blob, and add to partial_tree */ + if (stat(path.buf, &st)) + die_errno("Failed to stat '%s'", path.buf); + if (index_path(o->repo->index, &blob_oid, path.buf, &st, HASH_WRITE_OBJECT)) + die("Failed to write blob object from '%s'", path.buf); + if (add_note(partial_tree, &obj_oid, &blob_oid, NULL)) + die("Failed to add resolved note '%s' to notes tree", + path.buf); + if (o->verbosity >= 4) + printf("Added resolved note for object %s: %s\n", + oid_to_hex(&obj_oid), oid_to_hex(&blob_oid)); + strbuf_setlen(&path, baselen); + } + + create_notes_commit(o->repo, partial_tree, partial_commit->parents, msg, + strlen(msg), result_oid); + repo_unuse_commit_buffer(the_repository, partial_commit, buffer); + if (o->verbosity >= 4) + printf("Finalized notes merge commit: %s\n", + oid_to_hex(result_oid)); + strbuf_release(&path); + closedir(dir); + return 0; +} + +int notes_merge_abort(struct notes_merge_options *o) +{ + /* + * Remove all files within .git/NOTES_MERGE_WORKTREE. We do not remove + * the .git/NOTES_MERGE_WORKTREE directory itself, since it might be + * the current working directory of the user. + */ + struct strbuf buf = STRBUF_INIT; + int ret; + + git_path_buf(&buf, NOTES_MERGE_WORKTREE); + if (o->verbosity >= 3) + printf("Removing notes merge worktree at %s/*\n", buf.buf); + ret = remove_dir_recursively(&buf, REMOVE_DIR_KEEP_TOPLEVEL); + strbuf_release(&buf); + return ret; +} |