Merge branch 'jl/fetch-submodule-recursive' into maint
[gitweb.git] / builtin / notes.c
index c7761b1140b513fb8904342d8d408ad7951fb7a0..4d5556e2cb5bccaf0100d9f5019e1a1c493e35e7 100644 (file)
@@ -26,9 +26,12 @@ static const char * const git_notes_usage[] = {
        "git notes [--ref <notes_ref>] append [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]",
        "git notes [--ref <notes_ref>] edit [<object>]",
        "git notes [--ref <notes_ref>] show [<object>]",
-       "git notes [--ref <notes_ref>] merge [-v | -q] <notes_ref>",
+       "git notes [--ref <notes_ref>] merge [-v | -q] [-s <strategy> ] <notes_ref>",
+       "git notes merge --commit [-v | -q]",
+       "git notes merge --abort [-v | -q]",
        "git notes [--ref <notes_ref>] remove [<object>]",
        "git notes [--ref <notes_ref>] prune [-n | -v]",
+       "git notes [--ref <notes_ref>] get-ref",
        NULL
 };
 
@@ -65,6 +68,8 @@ static const char * const git_notes_show_usage[] = {
 
 static const char * const git_notes_merge_usage[] = {
        "git notes merge [<options>] <notes_ref>",
+       "git notes merge --commit [<options>]",
+       "git notes merge --abort [<options>]",
        NULL
 };
 
@@ -78,6 +83,11 @@ static const char * const git_notes_prune_usage[] = {
        NULL
 };
 
+static const char * const git_notes_get_ref_usage[] = {
+       "git notes get-ref",
+       NULL
+};
+
 static const char note_template[] =
        "\n"
        "#\n"
@@ -320,6 +330,8 @@ combine_notes_fn parse_combine_notes_fn(const char *v)
                return combine_notes_ignore;
        else if (!strcasecmp(v, "concatenate"))
                return combine_notes_concatenate;
+       else if (!strcasecmp(v, "cat_sort_uniq"))
+               return combine_notes_cat_sort_uniq;
        else
                return NULL;
 }
@@ -537,7 +549,7 @@ static int add(int argc, const char **argv, const char *prefix)
                { OPTION_CALLBACK, 'C', "reuse-message", &msg, "OBJECT",
                        "reuse specified note object", PARSE_OPT_NONEG,
                        parse_reuse_arg},
-               OPT_BOOLEAN('f', "force", &force, "replace existing notes"),
+               OPT__FORCE(&force, "replace existing notes"),
                OPT_END()
        };
 
@@ -593,7 +605,7 @@ static int copy(int argc, const char **argv, const char *prefix)
        struct notes_tree *t;
        const char *rewrite_cmd = NULL;
        struct option options[] = {
-               OPT_BOOLEAN('f', "force", &force, "replace existing notes"),
+               OPT__FORCE(&force, "replace existing notes"),
                OPT_BOOLEAN(0, "stdin", &from_stdin, "read objects from stdin"),
                OPT_STRING(0, "for-rewrite", &rewrite_cmd, "command",
                           "load rewriting config for <command> (implies "
@@ -761,39 +773,153 @@ static int show(int argc, const char **argv, const char *prefix)
        return retval;
 }
 
+static int merge_abort(struct notes_merge_options *o)
+{
+       int ret = 0;
+
+       /*
+        * Remove .git/NOTES_MERGE_PARTIAL and .git/NOTES_MERGE_REF, and call
+        * notes_merge_abort() to remove .git/NOTES_MERGE_WORKTREE.
+        */
+
+       if (delete_ref("NOTES_MERGE_PARTIAL", NULL, 0))
+               ret += error("Failed to delete ref NOTES_MERGE_PARTIAL");
+       if (delete_ref("NOTES_MERGE_REF", NULL, REF_NODEREF))
+               ret += error("Failed to delete ref NOTES_MERGE_REF");
+       if (notes_merge_abort(o))
+               ret += error("Failed to remove 'git notes merge' worktree");
+       return ret;
+}
+
+static int merge_commit(struct notes_merge_options *o)
+{
+       struct strbuf msg = STRBUF_INIT;
+       unsigned char sha1[20], parent_sha1[20];
+       struct notes_tree *t;
+       struct commit *partial;
+       struct pretty_print_context pretty_ctx;
+
+       /*
+        * Read partial merge result from .git/NOTES_MERGE_PARTIAL,
+        * and target notes ref from .git/NOTES_MERGE_REF.
+        */
+
+       if (get_sha1("NOTES_MERGE_PARTIAL", sha1))
+               die("Failed to read ref NOTES_MERGE_PARTIAL");
+       else if (!(partial = lookup_commit_reference(sha1)))
+               die("Could not find commit from NOTES_MERGE_PARTIAL.");
+       else if (parse_commit(partial))
+               die("Could not parse commit from NOTES_MERGE_PARTIAL.");
+
+       if (partial->parents)
+               hashcpy(parent_sha1, partial->parents->item->object.sha1);
+       else
+               hashclr(parent_sha1);
+
+       t = xcalloc(1, sizeof(struct notes_tree));
+       init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);
+
+       o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, 0);
+       if (!o->local_ref)
+               die("Failed to resolve NOTES_MERGE_REF");
+
+       if (notes_merge_commit(o, t, partial, sha1))
+               die("Failed to finalize notes merge");
+
+       /* Reuse existing commit message in reflog message */
+       memset(&pretty_ctx, 0, sizeof(pretty_ctx));
+       format_commit_message(partial, "%s", &msg, &pretty_ctx);
+       strbuf_trim(&msg);
+       strbuf_insert(&msg, 0, "notes: ", 7);
+       update_ref(msg.buf, o->local_ref, sha1,
+                  is_null_sha1(parent_sha1) ? NULL : parent_sha1,
+                  0, DIE_ON_ERR);
+
+       free_notes(t);
+       strbuf_release(&msg);
+       return merge_abort(o);
+}
+
 static int merge(int argc, const char **argv, const char *prefix)
 {
        struct strbuf remote_ref = STRBUF_INIT, msg = STRBUF_INIT;
        unsigned char result_sha1[20];
        struct notes_tree *t;
        struct notes_merge_options o;
+       int do_merge = 0, do_commit = 0, do_abort = 0;
        int verbosity = 0, result;
+       const char *strategy = NULL;
        struct option options[] = {
+               OPT_GROUP("General options"),
                OPT__VERBOSITY(&verbosity),
+               OPT_GROUP("Merge options"),
+               OPT_STRING('s', "strategy", &strategy, "strategy",
+                          "resolve notes conflicts using the given strategy "
+                          "(manual/ours/theirs/union/cat_sort_uniq)"),
+               OPT_GROUP("Committing unmerged notes"),
+               { OPTION_BOOLEAN, 0, "commit", &do_commit, NULL,
+                       "finalize notes merge by committing unmerged notes",
+                       PARSE_OPT_NOARG | PARSE_OPT_NONEG },
+               OPT_GROUP("Aborting notes merge resolution"),
+               { OPTION_BOOLEAN, 0, "abort", &do_abort, NULL,
+                       "abort notes merge",
+                       PARSE_OPT_NOARG | PARSE_OPT_NONEG },
                OPT_END()
        };
 
        argc = parse_options(argc, argv, prefix, options,
                             git_notes_merge_usage, 0);
 
-       if (argc != 1) {
+       if (strategy || do_commit + do_abort == 0)
+               do_merge = 1;
+       if (do_merge + do_commit + do_abort != 1) {
+               error("cannot mix --commit, --abort or -s/--strategy");
+               usage_with_options(git_notes_merge_usage, options);
+       }
+
+       if (do_merge && argc != 1) {
                error("Must specify a notes ref to merge");
                usage_with_options(git_notes_merge_usage, options);
+       } else if (!do_merge && argc) {
+               error("too many parameters");
+               usage_with_options(git_notes_merge_usage, options);
        }
 
        init_notes_merge_options(&o);
        o.verbosity = verbosity + NOTES_MERGE_VERBOSITY_DEFAULT;
 
+       if (do_abort)
+               return merge_abort(&o);
+       if (do_commit)
+               return merge_commit(&o);
+
        o.local_ref = default_notes_ref();
        strbuf_addstr(&remote_ref, argv[0]);
        expand_notes_ref(&remote_ref);
        o.remote_ref = remote_ref.buf;
 
+       if (strategy) {
+               if (!strcmp(strategy, "manual"))
+                       o.strategy = NOTES_MERGE_RESOLVE_MANUAL;
+               else if (!strcmp(strategy, "ours"))
+                       o.strategy = NOTES_MERGE_RESOLVE_OURS;
+               else if (!strcmp(strategy, "theirs"))
+                       o.strategy = NOTES_MERGE_RESOLVE_THEIRS;
+               else if (!strcmp(strategy, "union"))
+                       o.strategy = NOTES_MERGE_RESOLVE_UNION;
+               else if (!strcmp(strategy, "cat_sort_uniq"))
+                       o.strategy = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ;
+               else {
+                       error("Unknown -s/--strategy: %s", strategy);
+                       usage_with_options(git_notes_merge_usage, options);
+               }
+       }
+
        t = init_notes_check("merge");
 
        strbuf_addf(&msg, "notes: Merged notes from %s into %s",
                    remote_ref.buf, default_notes_ref());
-       o.commit_msg = msg.buf + 7; // skip "notes: " prefix
+       strbuf_add(&(o.commit_msg), msg.buf + 7, msg.len - 7); /* skip "notes: " */
 
        result = notes_merge(&o, t, result_sha1);
 
@@ -801,14 +927,24 @@ static int merge(int argc, const char **argv, const char *prefix)
                /* Update default notes ref with new commit */
                update_ref(msg.buf, default_notes_ref(), result_sha1, NULL,
                           0, DIE_ON_ERR);
-       else
-               /* TODO: */
-               die("'git notes merge' cannot yet handle conflicts!");
+       else { /* Merge has unresolved conflicts */
+               /* Update .git/NOTES_MERGE_PARTIAL with partial merge result */
+               update_ref(msg.buf, "NOTES_MERGE_PARTIAL", result_sha1, NULL,
+                          0, DIE_ON_ERR);
+               /* Store ref-to-be-updated into .git/NOTES_MERGE_REF */
+               if (create_symref("NOTES_MERGE_REF", default_notes_ref(), NULL))
+                       die("Failed to store link to current notes ref (%s)",
+                           default_notes_ref());
+               printf("Automatic notes merge failed. Fix conflicts in %s and "
+                      "commit the result with 'git notes merge --commit', or "
+                      "abort the merge with 'git notes merge --abort'.\n",
+                      git_path(NOTES_MERGE_WORKTREE));
+       }
 
        free_notes(t);
        strbuf_release(&remote_ref);
        strbuf_release(&msg);
-       return 0;
+       return result < 0; /* return non-zero on conflicts */
 }
 
 static int remove_cmd(int argc, const char **argv, const char *prefix)
@@ -819,6 +955,7 @@ static int remove_cmd(int argc, const char **argv, const char *prefix)
        const char *object_ref;
        struct notes_tree *t;
        unsigned char object[20];
+       int retval;
 
        argc = parse_options(argc, argv, prefix, options,
                             git_notes_remove_usage, 0);
@@ -835,12 +972,17 @@ static int remove_cmd(int argc, const char **argv, const char *prefix)
 
        t = init_notes_check("remove");
 
-       fprintf(stderr, "Removing note for object %s\n", sha1_to_hex(object));
-       remove_note(t, object);
+       retval = remove_note(t, object);
+       if (retval)
+               fprintf(stderr, "Object %s has no note\n", sha1_to_hex(object));
+       else {
+               fprintf(stderr, "Removing note for object %s\n",
+                       sha1_to_hex(object));
 
-       commit_notes(t, "Notes removed by 'git notes remove'");
+               commit_notes(t, "Notes removed by 'git notes remove'");
+       }
        free_notes(t);
-       return 0;
+       return retval;
 }
 
 static int prune(int argc, const char **argv, const char *prefix)
@@ -848,9 +990,8 @@ static int prune(int argc, const char **argv, const char *prefix)
        struct notes_tree *t;
        int show_only = 0, verbose = 0;
        struct option options[] = {
-               OPT_BOOLEAN('n', "dry-run", &show_only,
-                           "do not remove, show only"),
-               OPT_BOOLEAN('v', "verbose", &verbose, "report pruned notes"),
+               OPT__DRY_RUN(&show_only, "do not remove, show only"),
+               OPT__VERBOSE(&verbose, "report pruned notes"),
                OPT_END()
        };
 
@@ -872,6 +1013,21 @@ static int prune(int argc, const char **argv, const char *prefix)
        return 0;
 }
 
+static int get_ref(int argc, const char **argv, const char *prefix)
+{
+       struct option options[] = { OPT_END() };
+       argc = parse_options(argc, argv, prefix, options,
+                            git_notes_get_ref_usage, 0);
+
+       if (argc) {
+               error("too many parameters");
+               usage_with_options(git_notes_get_ref_usage, options);
+       }
+
+       puts(default_notes_ref());
+       return 0;
+}
+
 int cmd_notes(int argc, const char **argv, const char *prefix)
 {
        int result;
@@ -910,6 +1066,8 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
                result = remove_cmd(argc, argv, prefix);
        else if (!strcmp(argv[0], "prune"))
                result = prune(argc, argv, prefix);
+       else if (!strcmp(argv[0], "get-ref"))
+               result = get_ref(argc, argv, prefix);
        else {
                result = error("Unknown subcommand: %s", argv[0]);
                usage_with_options(git_notes_usage, options);