Merge branch 'sb/config-write-fix'
[gitweb.git] / sequencer.c
index 16c1411054ab16a677b323bee035ef27a9005d18..c00eedd8568519433462b7d94dd5ef4d46fef96f 100644 (file)
@@ -307,7 +307,7 @@ static const char *action_name(const struct replay_opts *opts)
        case REPLAY_INTERACTIVE_REBASE:
                return N_("rebase -i");
        }
-       die(_("Unknown action: %d"), opts->action);
+       die(_("unknown action: %d"), opts->action);
 }
 
 struct commit_message {
@@ -433,7 +433,7 @@ static int read_oneliner(struct strbuf *buf,
 
 static struct tree *empty_tree(void)
 {
-       return lookup_tree(the_hash_algo->empty_tree);
+       return lookup_tree(the_repository, the_repository->hash_algo->empty_tree);
 }
 
 static int error_dirty_index(struct replay_opts *opts)
@@ -594,7 +594,7 @@ static int is_index_unchanged(void)
        if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, &head_oid, NULL))
                return error(_("could not resolve HEAD commit"));
 
-       head_commit = lookup_commit(&head_oid);
+       head_commit = lookup_commit(the_repository, &head_oid);
 
        /*
         * If head_commit is NULL, check_commit, called from
@@ -654,6 +654,7 @@ static int write_author_script(const char *message)
                        strbuf_addch(&buf, *(message++));
                else
                        strbuf_addf(&buf, "'\\\\%c'", *(message++));
+       strbuf_addch(&buf, '\'');
        res = write_message(buf.buf, buf.len, rebase_path_author_script(), 1);
        strbuf_release(&buf);
        return res;
@@ -708,43 +709,51 @@ static const char *read_author_ident(struct strbuf *buf)
        const char *keys[] = {
                "GIT_AUTHOR_NAME=", "GIT_AUTHOR_EMAIL=", "GIT_AUTHOR_DATE="
        };
-       char *in, *out, *eol;
-       int i = 0, len;
+       struct strbuf out = STRBUF_INIT;
+       char *in, *eol;
+       const char *val[3];
+       int i = 0;
 
        if (strbuf_read_file(buf, rebase_path_author_script(), 256) <= 0)
                return NULL;
 
        /* dequote values and construct ident line in-place */
-       for (in = out = buf->buf; i < 3 && in - buf->buf < buf->len; i++) {
+       for (in = buf->buf; i < 3 && in - buf->buf < buf->len; i++) {
                if (!skip_prefix(in, keys[i], (const char **)&in)) {
-                       warning("could not parse '%s' (looking for '%s'",
+                       warning(_("could not parse '%s' (looking for '%s'"),
                                rebase_path_author_script(), keys[i]);
                        return NULL;
                }
 
                eol = strchrnul(in, '\n');
                *eol = '\0';
-               sq_dequote(in);
-               len = strlen(in);
-
-               if (i > 0) /* separate values by spaces */
-                       *(out++) = ' ';
-               if (i == 1) /* email needs to be surrounded by <...> */
-                       *(out++) = '<';
-               memmove(out, in, len);
-               out += len;
-               if (i == 1) /* email needs to be surrounded by <...> */
-                       *(out++) = '>';
+               if (!sq_dequote(in)) {
+                       warning(_("bad quoting on %s value in '%s'"),
+                               keys[i], rebase_path_author_script());
+                       return NULL;
+               }
+               val[i] = in;
                in = eol + 1;
        }
 
        if (i < 3) {
-               warning("could not parse '%s' (looking for '%s')",
+               warning(_("could not parse '%s' (looking for '%s')"),
                        rebase_path_author_script(), keys[i]);
                return NULL;
        }
 
-       buf->len = out - buf->buf;
+       /* validate date since fmt_ident() will die() on bad value */
+       if (parse_date(val[2], &out)){
+               warning(_("invalid date format '%s' in '%s'"),
+                       val[2], rebase_path_author_script());
+               strbuf_release(&out);
+               return NULL;
+       }
+
+       strbuf_reset(&out);
+       strbuf_addstr(&out, fmt_ident(val[0], val[1], val[2], 0));
+       strbuf_swap(buf, &out);
+       strbuf_release(&out);
        return buf->buf;
 }
 
@@ -1101,7 +1110,7 @@ void print_commit_summary(const char *prefix, const struct object_id *oid,
        struct strbuf author_ident = STRBUF_INIT;
        struct strbuf committer_ident = STRBUF_INIT;
 
-       commit = lookup_commit(oid);
+       commit = lookup_commit(the_repository, oid);
        if (!commit)
                die(_("couldn't look up newly created commit"));
        if (parse_commit(commit))
@@ -1176,7 +1185,7 @@ static int parse_head(struct commit **head)
        if (get_oid("HEAD", &oid)) {
                current_head = NULL;
        } else {
-               current_head = lookup_commit_reference(&oid);
+               current_head = lookup_commit_reference(the_repository, &oid);
                if (!current_head)
                        return error(_("could not parse HEAD"));
                if (oidcmp(&oid, &current_head->object.oid)) {
@@ -1244,7 +1253,7 @@ static int try_to_commit(struct strbuf *msg, const char *author,
                commit_list_insert(current_head, &parents);
        }
 
-       if (write_cache_as_tree(&tree, 0, NULL)) {
+       if (write_index_as_tree(&tree, &the_index, get_index_file(), 0, NULL)) {
                res = error(_("git write-tree failed to write a tree"));
                goto out;
        }
@@ -1445,7 +1454,7 @@ 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);
+       die(_("unknown command: %d"), command);
 }
 
 static char command_to_char(const enum todo_command command)
@@ -1511,7 +1520,7 @@ static int update_squash_messages(enum todo_command command,
 
                if (get_oid("HEAD", &head))
                        return error(_("need a HEAD to fixup"));
-               if (!(head_commit = lookup_commit_reference(&head)))
+               if (!(head_commit = lookup_commit_reference(the_repository, &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"));
@@ -1630,7 +1639,7 @@ static int do_pick_commit(enum todo_command command, struct commit *commit,
                 * that represents the "current" state for merge-recursive
                 * to work on.
                 */
-               if (write_cache_as_tree(&head, 0, NULL))
+               if (write_index_as_tree(&head, &the_index, get_index_file(), 0, NULL))
                        return error(_("your index file is unmerged."));
        } else {
                unborn = get_oid("HEAD", &head);
@@ -2007,7 +2016,7 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol)
        if (status < 0)
                return -1;
 
-       item->commit = lookup_commit_reference(&commit_oid);
+       item->commit = lookup_commit_reference(the_repository, &commit_oid);
        return !item->commit;
 }
 
@@ -2608,15 +2617,17 @@ static int error_with_patch(struct commit *commit,
                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));
+               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",
+               fprintf_ln(stderr, _("Could not apply %s... %.*s"),
                        short_commit_name(commit), subject_len, subject);
 
        return exit_code;
@@ -2645,6 +2656,8 @@ static int do_exec(const char *command_line)
        fprintf(stderr, "Executing: %s\n", command_line);
        child_argv[0] = command_line;
        argv_array_pushf(&child_env, "GIT_DIR=%s", absolute_path(get_git_dir()));
+       argv_array_pushf(&child_env, "GIT_WORK_TREE=%s",
+                        absolute_path(get_git_work_tree()));
        status = run_command_v_opt_cd_env(child_argv, RUN_USING_SHELL, NULL,
                                          child_env.argv);
 
@@ -2728,7 +2741,7 @@ static int do_label(const char *name, int len)
        struct object_id head_oid;
 
        if (len == 1 && *name == '#')
-               return error("Illegal label name: '%.*s'", len, name);
+               return error(_("illegal label name: '%.*s'"), len, name);
 
        strbuf_addf(&ref_name, "refs/rewritten/%.*s", len, name);
        strbuf_addf(&msg, "rebase -i (label) '%.*s'", len, name);
@@ -2850,6 +2863,26 @@ static int do_reset(const char *name, int len, struct replay_opts *opts)
        return ret;
 }
 
+static struct commit *lookup_label(const char *label, int len,
+                                  struct strbuf *buf)
+{
+       struct commit *commit;
+
+       strbuf_reset(buf);
+       strbuf_addf(buf, "refs/rewritten/%.*s", len, label);
+       commit = lookup_commit_reference_by_name(buf->buf);
+       if (!commit) {
+               /* fall back to non-rewritten ref or commit */
+               strbuf_splice(buf, 0, strlen("refs/rewritten/"), "", 0);
+               commit = lookup_commit_reference_by_name(buf->buf);
+       }
+
+       if (!commit)
+               error(_("could not resolve '%s'"), buf->buf);
+
+       return commit;
+}
+
 static int do_merge(struct commit *commit, const char *arg, int arg_len,
                    int flags, struct replay_opts *opts)
 {
@@ -2858,8 +2891,9 @@ static int do_merge(struct commit *commit, const char *arg, int arg_len,
        struct strbuf ref_name = STRBUF_INIT;
        struct commit *head_commit, *merge_commit, *i;
        struct commit_list *bases, *j, *reversed = NULL;
+       struct commit_list *to_merge = NULL, **tail = &to_merge;
        struct merge_options o;
-       int merge_arg_len, oneline_offset, can_fast_forward, ret;
+       int merge_arg_len, oneline_offset, can_fast_forward, ret, k;
        static struct lock_file lock;
        const char *p;
 
@@ -2874,26 +2908,34 @@ static int do_merge(struct commit *commit, const char *arg, int arg_len,
                goto leave_merge;
        }
 
-       oneline_offset = arg_len;
-       merge_arg_len = strcspn(arg, " \t\n");
-       p = arg + merge_arg_len;
-       p += strspn(p, " \t\n");
-       if (*p == '#' && (!p[1] || isspace(p[1]))) {
-               p += 1 + strspn(p + 1, " \t\n");
-               oneline_offset = p - arg;
-       } else if (p - arg < arg_len)
-               BUG("octopus merges are not supported yet: '%s'", p);
-
-       strbuf_addf(&ref_name, "refs/rewritten/%.*s", merge_arg_len, arg);
-       merge_commit = lookup_commit_reference_by_name(ref_name.buf);
-       if (!merge_commit) {
-               /* fall back to non-rewritten ref or commit */
-               strbuf_splice(&ref_name, 0, strlen("refs/rewritten/"), "", 0);
-               merge_commit = lookup_commit_reference_by_name(ref_name.buf);
+       /*
+        * For octopus merges, the arg starts with the list of revisions to be
+        * merged. The list is optionally followed by '#' and the oneline.
+        */
+       merge_arg_len = oneline_offset = arg_len;
+       for (p = arg; p - arg < arg_len; p += strspn(p, " \t\n")) {
+               if (!*p)
+                       break;
+               if (*p == '#' && (!p[1] || isspace(p[1]))) {
+                       p += 1 + strspn(p + 1, " \t\n");
+                       oneline_offset = p - arg;
+                       break;
+               }
+               k = strcspn(p, " \t\n");
+               if (!k)
+                       continue;
+               merge_commit = lookup_label(p, k, &ref_name);
+               if (!merge_commit) {
+                       ret = error(_("unable to parse '%.*s'"), k, p);
+                       goto leave_merge;
+               }
+               tail = &commit_list_insert(merge_commit, tail)->next;
+               p += k;
+               merge_arg_len = p - arg;
        }
 
-       if (!merge_commit) {
-               ret = error(_("could not resolve '%s'"), ref_name.buf);
+       if (!to_merge) {
+               ret = error(_("nothing to merge: '%.*s'"), arg_len, arg);
                goto leave_merge;
        }
 
@@ -2904,8 +2946,13 @@ static int do_merge(struct commit *commit, const char *arg, int arg_len,
                 * "[new root]", let's simply fast-forward to the merge head.
                 */
                rollback_lock_file(&lock);
-               ret = fast_forward_to(&merge_commit->object.oid,
-                                      &head_commit->object.oid, 0, opts);
+               if (to_merge->next)
+                       ret = error(_("octopus merge cannot be executed on "
+                                     "top of a [new root]"));
+               else
+                       ret = fast_forward_to(&to_merge->item->object.oid,
+                                             &head_commit->object.oid, 0,
+                                             opts);
                goto leave_merge;
        }
 
@@ -2941,7 +2988,8 @@ static int do_merge(struct commit *commit, const char *arg, int arg_len,
                        p = arg + oneline_offset;
                        len = arg_len - oneline_offset;
                } else {
-                       strbuf_addf(&buf, "Merge branch '%.*s'",
+                       strbuf_addf(&buf, "Merge %s '%.*s'",
+                                   to_merge->next ? "branches" : "branch",
                                    merge_arg_len, arg);
                        p = buf.buf;
                        len = buf.len;
@@ -2965,28 +3013,76 @@ static int do_merge(struct commit *commit, const char *arg, int arg_len,
                        &head_commit->object.oid);
 
        /*
-        * If the merge head is different from the original one, we cannot
+        * If any merge head is different from the original one, we cannot
         * fast-forward.
         */
        if (can_fast_forward) {
-               struct commit_list *second_parent = commit->parents->next;
+               struct commit_list *p = commit->parents->next;
 
-               if (second_parent && !second_parent->next &&
-                   oidcmp(&merge_commit->object.oid,
-                          &second_parent->item->object.oid))
+               for (j = to_merge; j && p; j = j->next, p = p->next)
+                       if (oidcmp(&j->item->object.oid,
+                                  &p->item->object.oid)) {
+                               can_fast_forward = 0;
+                               break;
+                       }
+               /*
+                * If the number of merge heads differs from the original merge
+                * commit, we cannot fast-forward.
+                */
+               if (j || p)
                        can_fast_forward = 0;
        }
 
-       if (can_fast_forward && commit->parents->next &&
-           !commit->parents->next->next &&
-           !oidcmp(&commit->parents->next->item->object.oid,
-                   &merge_commit->object.oid)) {
+       if (can_fast_forward) {
                rollback_lock_file(&lock);
                ret = fast_forward_to(&commit->object.oid,
                                      &head_commit->object.oid, 0, opts);
                goto leave_merge;
        }
 
+       if (to_merge->next) {
+               /* Octopus merge */
+               struct child_process cmd = CHILD_PROCESS_INIT;
+
+               if (read_env_script(&cmd.env_array)) {
+                       const char *gpg_opt = gpg_sign_opt_quoted(opts);
+
+                       ret = error(_(staged_changes_advice), gpg_opt, gpg_opt);
+                       goto leave_merge;
+               }
+
+               cmd.git_cmd = 1;
+               argv_array_push(&cmd.args, "merge");
+               argv_array_push(&cmd.args, "-s");
+               argv_array_push(&cmd.args, "octopus");
+               argv_array_push(&cmd.args, "--no-edit");
+               argv_array_push(&cmd.args, "--no-ff");
+               argv_array_push(&cmd.args, "--no-log");
+               argv_array_push(&cmd.args, "--no-stat");
+               argv_array_push(&cmd.args, "-F");
+               argv_array_push(&cmd.args, git_path_merge_msg(the_repository));
+               if (opts->gpg_sign)
+                       argv_array_push(&cmd.args, opts->gpg_sign);
+
+               /* Add the tips to be merged */
+               for (j = to_merge; j; j = j->next)
+                       argv_array_push(&cmd.args,
+                                       oid_to_hex(&j->item->object.oid));
+
+               strbuf_release(&ref_name);
+               unlink(git_path_cherry_pick_head(the_repository));
+               rollback_lock_file(&lock);
+
+               rollback_lock_file(&lock);
+               ret = run_command(&cmd);
+
+               /* force re-reading of the cache */
+               if (!ret && (discard_cache() < 0 || read_cache() < 0))
+                       ret = error(_("could not read index"));
+               goto leave_merge;
+       }
+
+       merge_commit = to_merge->item;
        write_message(oid_to_hex(&merge_commit->object.oid), GIT_SHA1_HEXSZ,
                      git_path_merge_head(the_repository), 0);
        write_message("no-ff", 5, git_path_merge_mode(the_repository), 0);
@@ -3049,6 +3145,7 @@ static int do_merge(struct commit *commit, const char *arg, int arg_len,
 leave_merge:
        strbuf_release(&ref_name);
        rollback_lock_file(&lock);
+       free_commit_list(to_merge);
        return ret;
 }
 
@@ -3634,7 +3731,7 @@ int sequencer_pick_revisions(struct replay_opts *opts)
                        continue;
 
                if (!get_oid(name, &oid)) {
-                       if (!lookup_commit_reference_gently(&oid, 1)) {
+                       if (!lookup_commit_reference_gently(the_repository, &oid, 1)) {
                                enum object_type type = oid_object_info(the_repository,
                                                                        &oid,
                                                                        NULL);
@@ -3905,7 +4002,6 @@ static int make_script_with_merges(struct pretty_print_context *pp,
         */
        while ((commit = get_revision(revs))) {
                struct commit_list *to_merge;
-               int is_octopus;
                const char *p1, *p2;
                struct object_id *oid;
                int is_empty;
@@ -3937,11 +4033,6 @@ static int make_script_with_merges(struct pretty_print_context *pp,
                        continue;
                }
 
-               is_octopus = to_merge && to_merge->next;
-
-               if (is_octopus)
-                       BUG("Octopus merges not yet supported");
-
                /* Create a label */
                strbuf_reset(&label);
                if (skip_prefix(oneline.buf, "Merge ", &p1) &&
@@ -3963,13 +4054,17 @@ static int make_script_with_merges(struct pretty_print_context *pp,
                strbuf_addf(&buf, "%s -C %s",
                            cmd_merge, oid_to_hex(&commit->object.oid));
 
-               /* label the tip of merged branch */
-               oid = &to_merge->item->object.oid;
-               strbuf_addch(&buf, ' ');
+               /* label the tips of merged branches */
+               for (; to_merge; to_merge = to_merge->next) {
+                       oid = &to_merge->item->object.oid;
+                       strbuf_addch(&buf, ' ');
+
+                       if (!oidset_contains(&interesting, oid)) {
+                               strbuf_addstr(&buf, label_oid(oid, NULL,
+                                                             &state));
+                               continue;
+                       }
 
-               if (!oidset_contains(&interesting, oid))
-                       strbuf_addstr(&buf, label_oid(oid, NULL, &state));
-               else {
                        tips_tail = &commit_list_insert(to_merge->item,
                                                        tips_tail)->next;
 
@@ -4160,10 +4255,9 @@ int sequencer_add_exec_commands(const char *commands)
 {
        const char *todo_file = rebase_path_todo();
        struct todo_list todo_list = TODO_LIST_INIT;
-       struct todo_item *item;
        struct strbuf *buf = &todo_list.buf;
        size_t offset = 0, commands_len = strlen(commands);
-       int i, first;
+       int i, insert;
 
        if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0)
                return error(_("could not read '%s'."), todo_file);
@@ -4173,19 +4267,40 @@ int sequencer_add_exec_commands(const char *commands)
                return error(_("unusable todo list: '%s'"), todo_file);
        }
 
-       first = 1;
-       /* insert <commands> before every pick except the first one */
-       for (item = todo_list.items, i = 0; i < todo_list.nr; i++, item++) {
-               if (item->command == TODO_PICK && !first) {
-                       strbuf_insert(buf, item->offset_in_buf + offset,
-                                     commands, commands_len);
+       /*
+        * Insert <commands> after every pick. Here, fixup/squash chains
+        * are considered part of the pick, so we insert the commands *after*
+        * those chains if there are any.
+        */
+       insert = -1;
+       for (i = 0; i < todo_list.nr; i++) {
+               enum todo_command command = todo_list.items[i].command;
+
+               if (insert >= 0) {
+                       /* skip fixup/squash chains */
+                       if (command == TODO_COMMENT)
+                               continue;
+                       else if (is_fixup(command)) {
+                               insert = i + 1;
+                               continue;
+                       }
+                       strbuf_insert(buf,
+                                     todo_list.items[insert].offset_in_buf +
+                                     offset, commands, commands_len);
                        offset += commands_len;
+                       insert = -1;
                }
-               first = 0;
+
+               if (command == TODO_PICK || command == TODO_MERGE)
+                       insert = i + 1;
        }
 
-       /* append final <commands> */
-       strbuf_add(buf, commands, commands_len);
+       /* insert or append final <commands> */
+       if (insert >= 0 && insert < todo_list.nr)
+               strbuf_insert(buf, todo_list.items[insert].offset_in_buf +
+                             offset, commands, commands_len);
+       else if (insert >= 0 || !offset)
+               strbuf_add(buf, commands, commands_len);
 
        i = write_message(buf->buf, buf->len, todo_file, 0);
        todo_list_release(&todo_list);