Sync with 2.12.5
[gitweb.git] / builtin / commit.c
index 77e3dc849419e697abe8f2f4c7d753cce17634a8..aff6bf7aadc6f5209d5f8fc22dfde055a96214c4 100644 (file)
@@ -142,14 +142,24 @@ static int show_ignored_in_status, have_option_m;
 static const char *only_include_assumed;
 static struct strbuf message = STRBUF_INIT;
 
-static enum status_format {
-       STATUS_FORMAT_NONE = 0,
-       STATUS_FORMAT_LONG,
-       STATUS_FORMAT_SHORT,
-       STATUS_FORMAT_PORCELAIN,
+static enum wt_status_format status_format = STATUS_FORMAT_UNSPECIFIED;
 
-       STATUS_FORMAT_UNSPECIFIED
-} status_format = STATUS_FORMAT_UNSPECIFIED;
+static int opt_parse_porcelain(const struct option *opt, const char *arg, int unset)
+{
+       enum wt_status_format *value = (enum wt_status_format *)opt->value;
+       if (unset)
+               *value = STATUS_FORMAT_NONE;
+       else if (!arg)
+               *value = STATUS_FORMAT_PORCELAIN;
+       else if (!strcmp(arg, "v1") || !strcmp(arg, "1"))
+               *value = STATUS_FORMAT_PORCELAIN;
+       else if (!strcmp(arg, "v2") || !strcmp(arg, "2"))
+               *value = STATUS_FORMAT_PORCELAIN_V2;
+       else
+               die("unsupported porcelain version '%s'", arg);
+
+       return 0;
+}
 
 static int opt_parse_m(const struct option *opt, const char *arg, int unset)
 {
@@ -173,7 +183,7 @@ static void determine_whence(struct wt_status *s)
                whence = FROM_MERGE;
        else if (file_exists(git_path_cherry_pick_head())) {
                whence = FROM_CHERRY_PICK;
-               if (file_exists(git_path(SEQ_DIR)))
+               if (file_exists(git_path_seq_dir()))
                        sequencer_in_use = 1;
        }
        else
@@ -341,7 +351,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 
        if (interactive) {
                char *old_index_env = NULL;
-               hold_locked_index(&index_lock, 1);
+               hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
 
                refresh_cache_or_die(refresh_flags);
 
@@ -386,8 +396,8 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
         * (B) on failure, rollback the real index.
         */
        if (all || (also && pathspec.nr)) {
-               hold_locked_index(&index_lock, 1);
-               add_files_to_cache(also ? prefix : NULL, &pathspec, 0, 0);
+               hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
+               add_files_to_cache(also ? prefix : NULL, &pathspec, 0);
                refresh_cache_or_die(refresh_flags);
                update_main_cache_tree(WRITE_TREE_SILENT);
                if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
@@ -406,7 +416,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
         * We still need to refresh the index here.
         */
        if (!only && !pathspec.nr) {
-               hold_locked_index(&index_lock, 1);
+               hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
                refresh_cache_or_die(refresh_flags);
                if (active_cache_changed
                    || !cache_tree_fully_valid(active_cache_tree))
@@ -458,7 +468,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
        if (read_cache() < 0)
                die(_("cannot read the index"));
 
-       hold_locked_index(&index_lock, 1);
+       hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
        add_remove_files(&partial);
        refresh_cache(REFRESH_QUIET);
        update_main_cache_tree(WRITE_TREE_SILENT);
@@ -486,7 +496,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
                      struct wt_status *s)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
 
        if (s->relative_paths)
                s->prefix = prefix;
@@ -499,25 +509,14 @@ static int run_status(FILE *fp, const char *index_file, const char *prefix, int
        s->index_file = index_file;
        s->fp = fp;
        s->nowarn = nowarn;
-       s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
+       s->is_initial = get_sha1(s->reference, oid.hash) ? 1 : 0;
+       if (!s->is_initial)
+               hashcpy(s->sha1_commit, oid.hash);
+       s->status_format = status_format;
+       s->ignore_submodule_arg = ignore_submodule_arg;
 
        wt_status_collect(s);
-
-       switch (status_format) {
-       case STATUS_FORMAT_SHORT:
-               wt_shortstatus_print(s);
-               break;
-       case STATUS_FORMAT_PORCELAIN:
-               wt_porcelain_print(s);
-               break;
-       case STATUS_FORMAT_UNSPECIFIED:
-               die("BUG: finalize_deferred_config() should have been called");
-               break;
-       case STATUS_FORMAT_NONE:
-       case STATUS_FORMAT_LONG:
-               wt_status_print(s);
-               break;
-       }
+       wt_status_print(s);
 
        return s->commitable;
 }
@@ -791,7 +790,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                strbuf_stripspace(&sb, 0);
 
        if (signoff)
-               append_signoff(&sb, ignore_non_trailer(&sb), 0);
+               append_signoff(&sb, ignore_non_trailer(sb.buf, sb.len), 0);
 
        if (fwrite(sb.buf, 1, sb.len, s->fp) < sb.len)
                die_errno(_("could not write commit template"));
@@ -822,9 +821,9 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                                        "If this is not correct, please remove the file\n"
                                        "       %s\n"
                                        "and try again.\n"),
-                               git_path(whence == FROM_MERGE
-                                        ? "MERGE_HEAD"
-                                        : "CHERRY_PICK_HEAD"));
+                               whence == FROM_MERGE ?
+                                       git_path_merge_head() :
+                                       git_path_cherry_pick_head());
                }
 
                fprintf(s->fp, "\n");
@@ -886,7 +885,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                commitable = run_status(s->fp, index_file, prefix, 1, s);
                s->use_color = saved_color_setting;
        } else {
-               unsigned char sha1[20];
+               struct object_id oid;
                const char *parent = "HEAD";
 
                if (!active_nr && read_cache() < 0)
@@ -895,9 +894,14 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                if (amend)
                        parent = "HEAD^1";
 
-               if (get_sha1(parent, sha1))
-                       commitable = !!active_nr;
-               else {
+               if (get_sha1(parent, oid.hash)) {
+                       int i, ita_nr = 0;
+
+                       for (i = 0; i < active_nr; i++)
+                               if (ce_intent_to_add(active_cache[i]))
+                                       ita_nr++;
+                       commitable = active_nr - ita_nr > 0;
+               } else {
                        /*
                         * Unless the user did explicitly request a submodule
                         * ignore mode by passing a command line option we do
@@ -911,7 +915,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                        if (ignore_submodule_arg &&
                            !strcmp(ignore_submodule_arg, "all"))
                                diff_flags |= DIFF_OPT_IGNORE_SUBMODULES;
-                       commitable = index_differs_from(parent, diff_flags);
+                       commitable = index_differs_from(parent, diff_flags, 1);
                }
        }
        strbuf_release(&committer_ident);
@@ -956,15 +960,15 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
                return 0;
 
        if (use_editor) {
-               char index[PATH_MAX];
-               const char *env[2] = { NULL };
-               env[0] =  index;
-               snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
-               if (launch_editor(git_path_commit_editmsg(), NULL, env)) {
+               struct argv_array env = ARGV_ARRAY_INIT;
+
+               argv_array_pushf(&env, "GIT_INDEX_FILE=%s", index_file);
+               if (launch_editor(git_path_commit_editmsg(), NULL, env.argv)) {
                        fprintf(stderr,
                        _("Please supply the message using either -m or -F option.\n"));
                        exit(1);
                }
+               argv_array_clear(&env);
        }
 
        if (!no_verify &&
@@ -980,7 +984,7 @@ static int rest_is_empty(struct strbuf *sb, int start)
        int i, eol;
        const char *nl;
 
-       /* Check if the rest is just whitespace and Signed-of-by's. */
+       /* Check if the rest is just whitespace and Signed-off-by's. */
        for (i = start; i < sb->len; i++) {
                nl = memchr(sb->buf + i, '\n', sb->len - i);
                if (nl)
@@ -1099,7 +1103,7 @@ static const char *read_commit_message(const char *name)
  * is not in effect here.
  */
 static struct status_deferred_config {
-       enum status_format status_format;
+       enum wt_status_format status_format;
        int show_branch;
 } status_deferred_config = {
        STATUS_FORMAT_UNSPECIFIED,
@@ -1109,6 +1113,7 @@ static struct status_deferred_config {
 static void finalize_deferred_config(struct wt_status *s)
 {
        int use_deferred_config = (status_format != STATUS_FORMAT_PORCELAIN &&
+                                  status_format != STATUS_FORMAT_PORCELAIN_V2 &&
                                   !s->null_termination);
 
        if (s->null_termination) {
@@ -1201,10 +1206,8 @@ static int parse_and_validate_options(int argc, const char *argv[],
 
        if (also + only + all + interactive > 1)
                die(_("Only one of --include/--only/--all/--interactive/--patch can be used."));
-       if (argc == 0 && (also || (only && !amend)))
+       if (argc == 0 && (also || (only && !amend && !allow_empty)))
                die(_("No paths with --include/--only does not make sense."));
-       if (argc == 0 && only && amend)
-               only_include_assumed = _("Clever... amending the last one with dirty index.");
        if (argc > 0 && !also && !only)
                only_include_assumed = _("Explicit paths specified without -i or -o; assuming --only paths...");
        if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
@@ -1329,16 +1332,16 @@ int cmd_status(int argc, const char **argv, const char *prefix)
 {
        static struct wt_status s;
        int fd;
-       unsigned char sha1[20];
+       struct object_id oid;
        static struct option builtin_status_options[] = {
                OPT__VERBOSE(&verbose, N_("be verbose")),
                OPT_SET_INT('s', "short", &status_format,
                            N_("show status concisely"), STATUS_FORMAT_SHORT),
                OPT_BOOL('b', "branch", &s.show_branch,
                         N_("show branch information")),
-               OPT_SET_INT(0, "porcelain", &status_format,
-                           N_("machine-readable output"),
-                           STATUS_FORMAT_PORCELAIN),
+               { OPTION_CALLBACK, 0, "porcelain", &status_format,
+                 N_("version"), N_("machine-readable output"),
+                 PARSE_OPT_OPTARG, opt_parse_porcelain },
                OPT_SET_INT(0, "long", &status_format,
                            N_("show status in long format (default)"),
                            STATUS_FORMAT_LONG),
@@ -1379,8 +1382,14 @@ int cmd_status(int argc, const char **argv, const char *prefix)
 
        fd = hold_locked_index(&index_lock, 0);
 
-       s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
+       s.is_initial = get_sha1(s.reference, oid.hash) ? 1 : 0;
+       if (!s.is_initial)
+               hashcpy(s.sha1_commit, oid.hash);
+
        s.ignore_submodule_arg = ignore_submodule_arg;
+       s.status_format = status_format;
+       s.verbose = verbose;
+
        wt_status_collect(&s);
 
        if (0 <= fd)
@@ -1389,29 +1398,13 @@ int cmd_status(int argc, const char **argv, const char *prefix)
        if (s.relative_paths)
                s.prefix = prefix;
 
-       switch (status_format) {
-       case STATUS_FORMAT_SHORT:
-               wt_shortstatus_print(&s);
-               break;
-       case STATUS_FORMAT_PORCELAIN:
-               wt_porcelain_print(&s);
-               break;
-       case STATUS_FORMAT_UNSPECIFIED:
-               die("BUG: finalize_deferred_config() should have been called");
-               break;
-       case STATUS_FORMAT_NONE:
-       case STATUS_FORMAT_LONG:
-               s.verbose = verbose;
-               s.ignore_submodule_arg = ignore_submodule_arg;
-               wt_status_print(&s);
-               break;
-       }
+       wt_status_print(&s);
        return 0;
 }
 
 static const char *implicit_ident_advice(void)
 {
-       char *user_config = expand_user_path("~/.gitconfig");
+       char *user_config = expand_user_path("~/.gitconfig", 0);
        char *xdg_config = xdg_config_home("config");
        int config_exists = file_exists(user_config) || file_exists(xdg_config);
 
@@ -1425,19 +1418,19 @@ static const char *implicit_ident_advice(void)
 
 }
 
-static void print_summary(const char *prefix, const unsigned char *sha1,
+static void print_summary(const char *prefix, const struct object_id *oid,
                          int initial_commit)
 {
        struct rev_info rev;
        struct commit *commit;
        struct strbuf format = STRBUF_INIT;
-       unsigned char junk_sha1[20];
+       struct object_id junk_oid;
        const char *head;
        struct pretty_print_context pctx = {0};
        struct strbuf author_ident = STRBUF_INIT;
        struct strbuf committer_ident = STRBUF_INIT;
 
-       commit = lookup_commit(sha1);
+       commit = lookup_commit(oid->hash);
        if (!commit)
                die(_("couldn't look up newly created commit"));
        if (parse_commit(commit))
@@ -1484,7 +1477,7 @@ static void print_summary(const char *prefix, const unsigned char *sha1,
        rev.diffopt.break_opt = 0;
        diff_setup_done(&rev.diffopt);
 
-       head = resolve_ref_unsafe("HEAD", 0, junk_sha1, NULL);
+       head = resolve_ref_unsafe("HEAD", 0, junk_oid.hash, NULL);
        if (!strcmp(head, "HEAD"))
                head = _("detached HEAD");
        else
@@ -1529,15 +1522,13 @@ static int git_commit_config(const char *k, const char *v, void *cb)
        return git_status_config(k, v, s);
 }
 
-static int run_rewrite_hook(const unsigned char *oldsha1,
-                           const unsigned char *newsha1)
+static int run_rewrite_hook(const struct object_id *oldoid,
+                           const struct object_id *newoid)
 {
-       /* oldsha1 SP newsha1 LF NUL */
-       static char buf[2*40 + 3];
        struct child_process proc = CHILD_PROCESS_INIT;
        const char *argv[3];
        int code;
-       size_t n;
+       struct strbuf sb = STRBUF_INIT;
 
        argv[0] = find_hook("post-rewrite");
        if (!argv[0])
@@ -1553,34 +1544,33 @@ static int run_rewrite_hook(const unsigned char *oldsha1,
        code = start_command(&proc);
        if (code)
                return code;
-       n = snprintf(buf, sizeof(buf), "%s %s\n",
-                    sha1_to_hex(oldsha1), sha1_to_hex(newsha1));
+       strbuf_addf(&sb, "%s %s\n", oid_to_hex(oldoid), oid_to_hex(newoid));
        sigchain_push(SIGPIPE, SIG_IGN);
-       write_in_full(proc.in, buf, n);
+       write_in_full(proc.in, sb.buf, sb.len);
        close(proc.in);
+       strbuf_release(&sb);
        sigchain_pop(SIGPIPE);
        return finish_command(&proc);
 }
 
 int run_commit_hook(int editor_is_used, const char *index_file, const char *name, ...)
 {
-       const char *hook_env[3] =  { NULL };
-       char index[PATH_MAX];
+       struct argv_array hook_env = ARGV_ARRAY_INIT;
        va_list args;
        int ret;
 
-       snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
-       hook_env[0] = index;
+       argv_array_pushf(&hook_env, "GIT_INDEX_FILE=%s", index_file);
 
        /*
         * Let the hook know that no editor will be launched.
         */
        if (!editor_is_used)
-               hook_env[1] = "GIT_EDITOR=:";
+               argv_array_push(&hook_env, "GIT_EDITOR=:");
 
        va_start(args, name);
-       ret = run_hook_ve(hook_envname, args);
+       ret = run_hook_ve(hook_env.argv,name, args);
        va_end(args);
+       argv_array_clear(&hook_env);
 
        return ret;
 }
@@ -1646,8 +1636,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
        struct strbuf author_ident = STRBUF_INIT;
        const char *index_file, *reflog_msg;
        char *nl;
-       unsigned char sha1[20];
-       struct commit_list *parents = NULL, **pptr = &parents;
+       struct object_id oid;
+       struct commit_list *parents = NULL;
        struct stat statbuf;
        struct commit *current_head = NULL;
        struct commit_extra_header *extra = NULL;
@@ -1661,10 +1651,10 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
        status_format = STATUS_FORMAT_NONE; /* Ignore status.short */
        s.colopts = 0;
 
-       if (get_sha1("HEAD", sha1))
+       if (get_sha1("HEAD", oid.hash))
                current_head = NULL;
        else {
-               current_head = lookup_commit_or_die(sha1, "HEAD");
+               current_head = lookup_commit_or_die(oid.hash, "HEAD");
                if (parse_commit(current_head))
                        die(_("could not parse HEAD commit"));
        }
@@ -1693,20 +1683,18 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
                if (!reflog_msg)
                        reflog_msg = "commit (initial)";
        } else if (amend) {
-               struct commit_list *c;
-
                if (!reflog_msg)
                        reflog_msg = "commit (amend)";
-               for (c = current_head->parents; c; c = c->next)
-                       pptr = &commit_list_insert(c->item, pptr)->next;
+               parents = copy_commit_list(current_head->parents);
        } else if (whence == FROM_MERGE) {
                struct strbuf m = STRBUF_INIT;
                FILE *fp;
                int allow_fast_forward = 1;
+               struct commit_list **pptr = &parents;
 
                if (!reflog_msg)
                        reflog_msg = "commit (merge)";
-               pptr = &commit_list_insert(current_head, pptr)->next;
+               pptr = commit_list_append(current_head, pptr);
                fp = fopen(git_path_merge_head(), "r");
                if (fp == NULL)
                        die_errno(_("could not open '%s' for reading"),
@@ -1717,7 +1705,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
                        parent = get_merge_parent(m.buf);
                        if (!parent)
                                die(_("Corrupt MERGE_HEAD file (%s)"), m.buf);
-                       pptr = &commit_list_insert(parent, pptr)->next;
+                       pptr = commit_list_append(parent, pptr);
                }
                fclose(fp);
                strbuf_release(&m);
@@ -1734,7 +1722,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
                        reflog_msg = (whence == FROM_CHERRY_PICK)
                                        ? "commit (cherry-pick)"
                                        : "commit";
-               pptr = &commit_list_insert(current_head, pptr)->next;
+               commit_list_insert(current_head, &parents);
        }
 
        /* Finally, get the commit message */
@@ -1747,7 +1735,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 
        if (verbose || /* Truncate the message just before the diff, if any. */
            cleanup_mode == CLEANUP_SCISSORS)
-               wt_status_truncate_message_at_cut_line(&sb);
+               strbuf_setlen(&sb, wt_status_locate_end(sb.buf, sb.len));
 
        if (cleanup_mode != CLEANUP_NONE)
                strbuf_stripspace(&sb, cleanup_mode == CLEANUP_ALL);
@@ -1771,7 +1759,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
        }
 
        if (commit_tree_extended(sb.buf, sb.len, active_cache_tree->sha1,
-                        parents, sha1, author_ident.buf, sign_commit, extra)) {
+                        parents, oid.hash, author_ident.buf, sign_commit, extra)) {
                rollback_index_files();
                die(_("failed to write commit object"));
        }
@@ -1788,7 +1776,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 
        transaction = ref_transaction_begin(&err);
        if (!transaction ||
-           ref_transaction_update(transaction, "HEAD", sha1,
+           ref_transaction_update(transaction, "HEAD", oid.hash,
                                   current_head
                                   ? current_head->object.oid.hash : null_sha1,
                                   0, sb.buf, &err) ||
@@ -1817,13 +1805,13 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
                cfg = init_copy_notes_for_rewrite("amend");
                if (cfg) {
                        /* we are amending, so current_head is not NULL */
-                       copy_note_for_rewrite(cfg, current_head->object.oid.hash, sha1);
+                       copy_note_for_rewrite(cfg, current_head->object.oid.hash, oid.hash);
                        finish_copy_notes_for_rewrite(cfg, "Notes added by 'git commit --amend'");
                }
-               run_rewrite_hook(current_head->object.oid.hash, sha1);
+               run_rewrite_hook(&current_head->object.oid, &oid);
        }
        if (!quiet)
-               print_summary(prefix, sha1, !current_head);
+               print_summary(prefix, &oid, !current_head);
 
        strbuf_release(&err);
        return 0;