remote-bzr: update working tree upon pushing
[gitweb.git] / submodule.c
index 8fc974d1cbb8901f6653335f046d33c944d48d2c..e3e0b455eae925996aa8ecf8bf931edd0638d1cc 100644 (file)
@@ -63,6 +63,9 @@ static int add_submodule_odb(const char *path)
        alt_odb->name[40] = '\0';
        alt_odb->name[41] = '\0';
        alt_odb_list = alt_odb;
+
+       /* add possible alternates from the submodule */
+       read_info_alternates(objects_directory.buf, 0);
        prepare_alt_odb();
 done:
        strbuf_release(&objects_directory);
@@ -357,21 +360,19 @@ static void collect_submodules_from_diff(struct diff_queue_struct *q,
                                         void *data)
 {
        int i;
-       int *needs_pushing = data;
+       struct string_list *needs_pushing = data;
 
        for (i = 0; i < q->nr; i++) {
                struct diff_filepair *p = q->queue[i];
                if (!S_ISGITLINK(p->two->mode))
                        continue;
-               if (submodule_needs_pushing(p->two->path, p->two->sha1)) {
-                       *needs_pushing = 1;
-                       break;
-               }
+               if (submodule_needs_pushing(p->two->path, p->two->sha1))
+                       string_list_insert(needs_pushing, p->two->path);
        }
 }
 
-
-static void commit_need_pushing(struct commit *commit, int *needs_pushing)
+static void find_unpushed_submodule_commits(struct commit *commit,
+               struct string_list *needs_pushing)
 {
        struct rev_info rev;
 
@@ -382,14 +383,15 @@ static void commit_need_pushing(struct commit *commit, int *needs_pushing)
        diff_tree_combined_merge(commit, 1, &rev);
 }
 
-int check_submodule_needs_pushing(unsigned char new_sha1[20], const char *remotes_name)
+int find_unpushed_submodules(unsigned char new_sha1[20],
+               const char *remotes_name, struct string_list *needs_pushing)
 {
        struct rev_info rev;
        struct commit *commit;
        const char *argv[] = {NULL, NULL, "--not", "NULL", NULL};
        int argc = ARRAY_SIZE(argv) - 1;
        char *sha1_copy;
-       int needs_pushing = 0;
+
        struct strbuf remotes_arg = STRBUF_INIT;
 
        strbuf_addf(&remotes_arg, "--remotes=%s", remotes_name);
@@ -401,13 +403,62 @@ int check_submodule_needs_pushing(unsigned char new_sha1[20], const char *remote
        if (prepare_revision_walk(&rev))
                die("revision walk setup failed");
 
-       while ((commit = get_revision(&rev)) && !needs_pushing)
-               commit_need_pushing(commit, &needs_pushing);
+       while ((commit = get_revision(&rev)) != NULL)
+               find_unpushed_submodule_commits(commit, needs_pushing);
 
+       reset_revision_walk();
        free(sha1_copy);
        strbuf_release(&remotes_arg);
 
-       return needs_pushing;
+       return needs_pushing->nr;
+}
+
+static int push_submodule(const char *path)
+{
+       if (add_submodule_odb(path))
+               return 1;
+
+       if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) {
+               struct child_process cp;
+               const char *argv[] = {"push", NULL};
+
+               memset(&cp, 0, sizeof(cp));
+               cp.argv = argv;
+               cp.env = local_repo_env;
+               cp.git_cmd = 1;
+               cp.no_stdin = 1;
+               cp.dir = path;
+               if (run_command(&cp))
+                       return 0;
+               close(cp.out);
+       }
+
+       return 1;
+}
+
+int push_unpushed_submodules(unsigned char new_sha1[20], const char *remotes_name)
+{
+       int i, ret = 1;
+       struct string_list needs_pushing;
+
+       memset(&needs_pushing, 0, sizeof(struct string_list));
+       needs_pushing.strdup_strings = 1;
+
+       if (!find_unpushed_submodules(new_sha1, remotes_name, &needs_pushing))
+               return 1;
+
+       for (i = 0; i < needs_pushing.nr; i++) {
+               const char *path = needs_pushing.items[i].string;
+               fprintf(stderr, "Pushing submodule '%s'\n", path);
+               if (!push_submodule(path)) {
+                       fprintf(stderr, "Unable to push submodule '%s'\n", path);
+                       ret = 0;
+               }
+       }
+
+       string_list_clear(&needs_pushing, 0);
+
+       return ret;
 }
 
 static int is_submodule_commit_present(const char *path, unsigned char sha1[20])
@@ -523,8 +574,7 @@ static void calculate_changed_submodule_paths(void)
                        DIFF_OPT_SET(&diff_opts, RECURSIVE);
                        diff_opts.output_format |= DIFF_FORMAT_CALLBACK;
                        diff_opts.format_callback = submodule_collect_changed_cb;
-                       if (diff_setup_done(&diff_opts) < 0)
-                               die("diff_setup_done failed");
+                       diff_setup_done(&diff_opts);
                        diff_tree_sha1(parent->item->object.sha1, commit->object.sha1, "", &diff_opts);
                        diffcore_std(&diff_opts);
                        diff_flush(&diff_opts);
@@ -538,13 +588,13 @@ static void calculate_changed_submodule_paths(void)
        initialized_fetch_ref_tips = 0;
 }
 
-int fetch_populated_submodules(int num_options, const char **options,
+int fetch_populated_submodules(const struct argv_array *options,
                               const char *prefix, int command_line_option,
                               int quiet)
 {
-       int i, result = 0, argc = 0, default_argc;
+       int i, result = 0;
        struct child_process cp;
-       const char **argv;
+       struct argv_array argv = ARGV_ARRAY_INIT;
        struct string_list_item *name_for_path;
        const char *work_tree = get_git_work_tree();
        if (!work_tree)
@@ -554,17 +604,13 @@ int fetch_populated_submodules(int num_options, const char **options,
                if (read_cache() < 0)
                        die("index file corrupt");
 
-       /* 6: "fetch" (options) --recurse-submodules-default default "--submodule-prefix" prefix NULL */
-       argv = xcalloc(num_options + 6, sizeof(const char *));
-       argv[argc++] = "fetch";
-       for (i = 0; i < num_options; i++)
-               argv[argc++] = options[i];
-       argv[argc++] = "--recurse-submodules-default";
-       default_argc = argc++;
-       argv[argc++] = "--submodule-prefix";
+       argv_array_push(&argv, "fetch");
+       for (i = 0; i < options->argc; i++)
+               argv_array_push(&argv, options->argv[i]);
+       argv_array_push(&argv, "--recurse-submodules-default");
+       /* default value, "--submodule-prefix" and its value are added later */
 
        memset(&cp, 0, sizeof(cp));
-       cp.argv = argv;
        cp.env = local_repo_env;
        cp.git_cmd = 1;
        cp.no_stdin = 1;
@@ -624,16 +670,21 @@ int fetch_populated_submodules(int num_options, const char **options,
                        if (!quiet)
                                printf("Fetching submodule %s%s\n", prefix, ce->name);
                        cp.dir = submodule_path.buf;
-                       argv[default_argc] = default_argv;
-                       argv[argc] = submodule_prefix.buf;
+                       argv_array_push(&argv, default_argv);
+                       argv_array_push(&argv, "--submodule-prefix");
+                       argv_array_push(&argv, submodule_prefix.buf);
+                       cp.argv = argv.argv;
                        if (run_command(&cp))
                                result = 1;
+                       argv_array_pop(&argv);
+                       argv_array_pop(&argv);
+                       argv_array_pop(&argv);
                }
                strbuf_release(&submodule_path);
                strbuf_release(&submodule_git_dir);
                strbuf_release(&submodule_prefix);
        }
-       free(argv);
+       argv_array_clear(&argv);
 out:
        string_list_clear(&changed_submodule_paths, 1);
        return result;
@@ -708,6 +759,86 @@ unsigned is_submodule_modified(const char *path, int ignore_untracked)
        return dirty_submodule;
 }
 
+int submodule_uses_gitfile(const char *path)
+{
+       struct child_process cp;
+       const char *argv[] = {
+               "submodule",
+               "foreach",
+               "--quiet",
+               "--recursive",
+               "test -f .git",
+               NULL,
+       };
+       struct strbuf buf = STRBUF_INIT;
+       const char *git_dir;
+
+       strbuf_addf(&buf, "%s/.git", path);
+       git_dir = read_gitfile(buf.buf);
+       if (!git_dir) {
+               strbuf_release(&buf);
+               return 0;
+       }
+       strbuf_release(&buf);
+
+       /* Now test that all nested submodules use a gitfile too */
+       memset(&cp, 0, sizeof(cp));
+       cp.argv = argv;
+       cp.env = local_repo_env;
+       cp.git_cmd = 1;
+       cp.no_stdin = 1;
+       cp.no_stderr = 1;
+       cp.no_stdout = 1;
+       cp.dir = path;
+       if (run_command(&cp))
+               return 0;
+
+       return 1;
+}
+
+int ok_to_remove_submodule(const char *path)
+{
+       struct stat st;
+       ssize_t len;
+       struct child_process cp;
+       const char *argv[] = {
+               "status",
+               "--porcelain",
+               "-u",
+               "--ignore-submodules=none",
+               NULL,
+       };
+       struct strbuf buf = STRBUF_INIT;
+       int ok_to_remove = 1;
+
+       if ((lstat(path, &st) < 0) || is_empty_dir(path))
+               return 1;
+
+       if (!submodule_uses_gitfile(path))
+               return 0;
+
+       memset(&cp, 0, sizeof(cp));
+       cp.argv = argv;
+       cp.env = local_repo_env;
+       cp.git_cmd = 1;
+       cp.no_stdin = 1;
+       cp.out = -1;
+       cp.dir = path;
+       if (start_command(&cp))
+               die("Could not run 'git status --porcelain -uall --ignore-submodules=none' in submodule %s", path);
+
+       len = strbuf_read(&buf, cp.out, 1024);
+       if (len > 2)
+               ok_to_remove = 0;
+       close(cp.out);
+
+       if (finish_command(&cp))
+               die("'git status --porcelain -uall --ignore-submodules=none' failed in submodule %s", path);
+
+       strbuf_release(&buf);
+       return ok_to_remove;
+}
+
 static int find_first_merges(struct object_array *result, const char *path,
                struct commit *a, struct commit *b)
 {
@@ -741,6 +872,7 @@ static int find_first_merges(struct object_array *result, const char *path,
                if (in_merge_bases(b, commit))
                        add_object_array(o, NULL, &merges);
        }
+       reset_revision_walk();
 
        /* Now we've got all merges that contain a and b. Prune all
         * merges that contain another found merge and save them in