зеркало из https://github.com/microsoft/git.git
notes merge: eliminate OUTPUT macro
The macro is variadic, which breaks support for pre-C99 compilers, and it hides an "if", which can make code hard to understand on first reading if some arguments have side-effects. The OUTPUT macro seems to have been inspired by the "output" function from merge-recursive. But that function in merge-recursive exists to indent output based on the level of recursion and there is no similar justification for such a function in "notes merge". Noticed with 'make CC="gcc -std=c89 -pedantic"': notes-merge.c:24:22: warning: anonymous variadic macros were introduced in C99 [-Wvariadic-macros] Encouraged-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Nieder
Junio C Hamano
Родитель
ed36a48e6d
Коммит
5f9f8d15f1
104
notes-merge.c
104
notes-merge.c
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@ -21,14 +21,6 @@ void init_notes_merge_options(struct notes_merge_options *o)
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o->verbosity = NOTES_MERGE_VERBOSITY_DEFAULT;
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}
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#define OUTPUT(o, v, ...) \
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do { \
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if ((o)->verbosity >= (v)) { \
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printf(__VA_ARGS__); \
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puts(""); \
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} \
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} while (0)
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static int path_to_sha1(const char *path, unsigned char *sha1)
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{
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char hex_sha1[40];
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@ -392,21 +384,26 @@ static int merge_one_change_manual(struct notes_merge_options *o,
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strbuf_addf(&(o->commit_msg), "\t%s\n", sha1_to_hex(p->obj));
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OUTPUT(o, 2, "Auto-merging notes for %s", sha1_to_hex(p->obj));
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if (o->verbosity >= 2)
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printf("Auto-merging notes for %s\n", sha1_to_hex(p->obj));
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check_notes_merge_worktree(o);
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if (is_null_sha1(p->local)) {
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/* D/F conflict, checkout p->remote */
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assert(!is_null_sha1(p->remote));
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OUTPUT(o, 1, "CONFLICT (delete/modify): Notes for object %s "
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"deleted in %s and modified in %s. Version from %s "
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"left in tree.", sha1_to_hex(p->obj), lref, rref, rref);
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if (o->verbosity >= 1)
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printf("CONFLICT (delete/modify): Notes for object %s "
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"deleted in %s and modified in %s. Version from %s "
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"left in tree.\n",
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sha1_to_hex(p->obj), lref, rref, rref);
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write_note_to_worktree(p->obj, p->remote);
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} else if (is_null_sha1(p->remote)) {
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/* D/F conflict, checkout p->local */
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assert(!is_null_sha1(p->local));
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OUTPUT(o, 1, "CONFLICT (delete/modify): Notes for object %s "
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"deleted in %s and modified in %s. Version from %s "
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"left in tree.", sha1_to_hex(p->obj), rref, lref, lref);
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if (o->verbosity >= 1)
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printf("CONFLICT (delete/modify): Notes for object %s "
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"deleted in %s and modified in %s. Version from %s "
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"left in tree.\n",
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sha1_to_hex(p->obj), rref, lref, lref);
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write_note_to_worktree(p->obj, p->local);
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} else {
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/* "regular" conflict, checkout result of ll_merge() */
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@ -415,8 +412,9 @@ static int merge_one_change_manual(struct notes_merge_options *o,
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reason = "add/add";
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assert(!is_null_sha1(p->local));
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assert(!is_null_sha1(p->remote));
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OUTPUT(o, 1, "CONFLICT (%s): Merge conflict in notes for "
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"object %s", reason, sha1_to_hex(p->obj));
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if (o->verbosity >= 1)
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printf("CONFLICT (%s): Merge conflict in notes for "
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"object %s\n", reason, sha1_to_hex(p->obj));
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ll_merge_in_worktree(o, p);
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}
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@ -438,24 +436,30 @@ static int merge_one_change(struct notes_merge_options *o,
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case NOTES_MERGE_RESOLVE_MANUAL:
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return merge_one_change_manual(o, p, t);
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case NOTES_MERGE_RESOLVE_OURS:
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OUTPUT(o, 2, "Using local notes for %s", sha1_to_hex(p->obj));
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if (o->verbosity >= 2)
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printf("Using local notes for %s\n",
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sha1_to_hex(p->obj));
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/* nothing to do */
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return 0;
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case NOTES_MERGE_RESOLVE_THEIRS:
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OUTPUT(o, 2, "Using remote notes for %s", sha1_to_hex(p->obj));
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if (o->verbosity >= 2)
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printf("Using remote notes for %s\n",
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sha1_to_hex(p->obj));
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if (add_note(t, p->obj, p->remote, combine_notes_overwrite))
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die("BUG: combine_notes_overwrite failed");
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return 0;
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case NOTES_MERGE_RESOLVE_UNION:
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OUTPUT(o, 2, "Concatenating local and remote notes for %s",
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sha1_to_hex(p->obj));
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if (o->verbosity >= 2)
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printf("Concatenating local and remote notes for %s\n",
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sha1_to_hex(p->obj));
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if (add_note(t, p->obj, p->remote, combine_notes_concatenate))
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die("failed to concatenate notes "
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"(combine_notes_concatenate)");
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return 0;
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case NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ:
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OUTPUT(o, 2, "Concatenating unique lines in local and remote "
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"notes for %s", sha1_to_hex(p->obj));
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if (o->verbosity >= 2)
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printf("Concatenating unique lines in local and remote "
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"notes for %s\n", sha1_to_hex(p->obj));
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if (add_note(t, p->obj, p->remote, combine_notes_cat_sort_uniq))
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die("failed to concatenate notes "
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"(combine_notes_cat_sort_uniq)");
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@ -518,8 +522,9 @@ static int merge_from_diffs(struct notes_merge_options *o,
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conflicts = merge_changes(o, changes, &num_changes, t);
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free(changes);
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OUTPUT(o, 4, "Merge result: %i unmerged notes and a %s notes tree",
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conflicts, t->dirty ? "dirty" : "clean");
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if (o->verbosity >= 4)
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printf("Merge result: %i unmerged notes and a %s notes tree\n",
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conflicts, t->dirty ? "dirty" : "clean");
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return conflicts ? -1 : 1;
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}
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@ -616,33 +621,40 @@ int notes_merge(struct notes_merge_options *o,
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if (!bases) {
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base_sha1 = null_sha1;
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base_tree_sha1 = EMPTY_TREE_SHA1_BIN;
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OUTPUT(o, 4, "No merge base found; doing history-less merge");
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if (o->verbosity >= 4)
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printf("No merge base found; doing history-less merge\n");
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} else if (!bases->next) {
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base_sha1 = bases->item->object.sha1;
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base_tree_sha1 = bases->item->tree->object.sha1;
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OUTPUT(o, 4, "One merge base found (%.7s)",
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sha1_to_hex(base_sha1));
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if (o->verbosity >= 4)
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printf("One merge base found (%.7s)\n",
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sha1_to_hex(base_sha1));
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} else {
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/* TODO: How to handle multiple merge-bases? */
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base_sha1 = bases->item->object.sha1;
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base_tree_sha1 = bases->item->tree->object.sha1;
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OUTPUT(o, 3, "Multiple merge bases found. Using the first "
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"(%.7s)", sha1_to_hex(base_sha1));
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if (o->verbosity >= 3)
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printf("Multiple merge bases found. Using the first "
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"(%.7s)\n", sha1_to_hex(base_sha1));
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}
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OUTPUT(o, 4, "Merging remote commit %.7s into local commit %.7s with "
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"merge-base %.7s", sha1_to_hex(remote->object.sha1),
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sha1_to_hex(local->object.sha1), sha1_to_hex(base_sha1));
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if (o->verbosity >= 4)
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printf("Merging remote commit %.7s into local commit %.7s with "
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"merge-base %.7s\n", sha1_to_hex(remote->object.sha1),
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sha1_to_hex(local->object.sha1),
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sha1_to_hex(base_sha1));
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if (!hashcmp(remote->object.sha1, base_sha1)) {
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/* Already merged; result == local commit */
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OUTPUT(o, 2, "Already up-to-date!");
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if (o->verbosity >= 2)
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printf("Already up-to-date!\n");
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hashcpy(result_sha1, local->object.sha1);
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goto found_result;
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}
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if (!hashcmp(local->object.sha1, base_sha1)) {
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/* Fast-forward; result == remote commit */
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OUTPUT(o, 2, "Fast-forward");
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if (o->verbosity >= 2)
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printf("Fast-forward\n");
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hashcpy(result_sha1, remote->object.sha1);
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goto found_result;
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}
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@ -684,8 +696,9 @@ int notes_merge_commit(struct notes_merge_options *o,
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int path_len = strlen(path), i;
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const char *msg = strstr(partial_commit->buffer, "\n\n");
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OUTPUT(o, 3, "Committing notes in notes merge worktree at %.*s",
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path_len - 1, path);
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if (o->verbosity >= 3)
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printf("Committing notes in notes merge worktree at %.*s\n",
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path_len - 1, path);
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if (!msg || msg[2] == '\0')
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die("partial notes commit has empty message");
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@ -700,7 +713,9 @@ int notes_merge_commit(struct notes_merge_options *o,
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unsigned char obj_sha1[20], blob_sha1[20];
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if (ent->len - path_len != 40 || get_sha1_hex(relpath, obj_sha1)) {
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OUTPUT(o, 3, "Skipping non-SHA1 entry '%s'", ent->name);
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if (o->verbosity >= 3)
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printf("Skipping non-SHA1 entry '%s'\n",
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ent->name);
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continue;
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}
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@ -712,14 +727,16 @@ int notes_merge_commit(struct notes_merge_options *o,
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if (add_note(partial_tree, obj_sha1, blob_sha1, NULL))
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die("Failed to add resolved note '%s' to notes tree",
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ent->name);
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OUTPUT(o, 4, "Added resolved note for object %s: %s",
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sha1_to_hex(obj_sha1), sha1_to_hex(blob_sha1));
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if (o->verbosity >= 4)
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printf("Added resolved note for object %s: %s\n",
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sha1_to_hex(obj_sha1), sha1_to_hex(blob_sha1));
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}
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create_notes_commit(partial_tree, partial_commit->parents, msg,
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result_sha1);
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OUTPUT(o, 4, "Finalized notes merge commit: %s",
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sha1_to_hex(result_sha1));
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if (o->verbosity >= 4)
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printf("Finalized notes merge commit: %s\n",
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sha1_to_hex(result_sha1));
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return 0;
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}
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@ -730,7 +747,8 @@ int notes_merge_abort(struct notes_merge_options *o)
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int ret;
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strbuf_addstr(&buf, git_path(NOTES_MERGE_WORKTREE));
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OUTPUT(o, 3, "Removing notes merge worktree at %s", buf.buf);
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if (o->verbosity >= 3)
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printf("Removing notes merge worktree at %s\n", buf.buf);
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ret = remove_dir_recursively(&buf, 0);
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strbuf_release(&buf);
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return ret;
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