regex: use regexec_buf()

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 5295b727d4609fa33a08c31b2d051ce3f98244fb..3bea3aaa5029082198abab2b5a5dab838dbd6dec 100644 (file)
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -147,11 +147,11 @@ static int clone_submodule(const char *path, const char *gitdir, const char *url
 
 static int module_clone(int argc, const char **argv, const char *prefix)
 {
-       const char *path = NULL, *name = NULL, *url = NULL;
+       const char *name = NULL, *url = NULL;
        const char *reference = NULL, *depth = NULL;
        int quiet = 0;
        FILE *submodule_dot_git;
-       char *sm_gitdir, *cwd, *p;
+       char *p, *path = NULL, *sm_gitdir;
        struct strbuf rel_path = STRBUF_INIT;
        struct strbuf sb = STRBUF_INIT;
 
@@ -188,8 +188,18 @@ static int module_clone(int argc, const char **argv, const char *prefix)
        argc = parse_options(argc, argv, prefix, module_clone_options,
                             git_submodule_helper_usage, 0);
 
+       if (!path || !*path)
+               die(_("submodule--helper: unspecified or empty --path"));
+
        strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
-       sm_gitdir = strbuf_detach(&sb, NULL);
+       sm_gitdir = xstrdup(absolute_path(sb.buf));
+       strbuf_reset(&sb);
+
+       if (!is_absolute_path(path)) {
+               strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
+               path = strbuf_detach(&sb, NULL);
+       } else
+               path = xstrdup(path);
 
        if (!file_exists(sm_gitdir)) {
                if (safe_create_leading_directories_const(sm_gitdir) < 0)
@@ -206,45 +216,30 @@ static int module_clone(int argc, const char **argv, const char *prefix)
        }
 
        /* Write a .git file in the submodule to redirect to the superproject. */
-       if (safe_create_leading_directories_const(path) < 0)
-               die(_("could not create directory '%s'"), path);
-
-       if (path && *path)
-               strbuf_addf(&sb, "%s/.git", path);
-       else
-               strbuf_addstr(&sb, ".git");
-
+       strbuf_addf(&sb, "%s/.git", path);
        if (safe_create_leading_directories_const(sb.buf) < 0)
                die(_("could not create leading directories of '%s'"), sb.buf);
        submodule_dot_git = fopen(sb.buf, "w");
        if (!submodule_dot_git)
                die_errno(_("cannot open file '%s'"), sb.buf);
 
-       fprintf(submodule_dot_git, "gitdir: %s\n",
-               relative_path(sm_gitdir, path, &rel_path));
+       fprintf_or_die(submodule_dot_git, "gitdir: %s\n",
+                      relative_path(sm_gitdir, path, &rel_path));
        if (fclose(submodule_dot_git))
                die(_("could not close file %s"), sb.buf);
        strbuf_reset(&sb);
        strbuf_reset(&rel_path);
 
-       cwd = xgetcwd();
        /* Redirect the worktree of the submodule in the superproject's config */
-       if (!is_absolute_path(sm_gitdir)) {
-               strbuf_addf(&sb, "%s/%s", cwd, sm_gitdir);
-               free(sm_gitdir);
-               sm_gitdir = strbuf_detach(&sb, NULL);
-       }
-
-       strbuf_addf(&sb, "%s/%s", cwd, path);
        p = git_pathdup_submodule(path, "config");
        if (!p)
                die(_("could not get submodule directory for '%s'"), path);
        git_config_set_in_file(p, "core.worktree",
-                              relative_path(sb.buf, sm_gitdir, &rel_path));
+                              relative_path(path, sm_gitdir, &rel_path));
        strbuf_release(&sb);
        strbuf_release(&rel_path);
        free(sm_gitdir);
-       free(cwd);
+       free(path);
        free(p);
        return 0;
 }