Merge branch 'tg/worktree-create-tracking'
[gitweb.git] / setup.c
diff --git a/setup.c b/setup.c
index 23950173fc01268320d2e23c36ef80a1b1231a5e..50c6b2ab11fa3579a17079c16a4fb7241df9b875 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -230,7 +230,7 @@ void verify_filename(const char *prefix,
                     int diagnose_misspelt_rev)
 {
        if (*arg == '-')
-               die("bad flag '%s' used after filename", arg);
+               die("option '%s' must come before non-option arguments", arg);
        if (looks_like_pathspec(arg) || check_filename(prefix, arg))
                return;
        die_verify_filename(prefix, arg, diagnose_misspelt_rev);
@@ -312,7 +312,9 @@ int is_git_directory(const char *suspect)
        size_t len;
 
        /* Check worktree-related signatures */
-       strbuf_addf(&path, "%s/HEAD", suspect);
+       strbuf_addstr(&path, suspect);
+       strbuf_complete(&path, '/');
+       strbuf_addstr(&path, "HEAD");
        if (validate_headref(path.buf))
                goto done;
 
@@ -399,11 +401,6 @@ void setup_work_tree(void)
        if (getenv(GIT_WORK_TREE_ENVIRONMENT))
                setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
 
-       /*
-        * NEEDSWORK: this call can essentially be set_git_dir(get_git_dir())
-        * which can cause some problems when trying to free the old value of
-        * gitdir.
-        */
        set_git_dir(remove_leading_path(git_dir, work_tree));
        initialized = 1;
 }
@@ -437,16 +434,15 @@ static int check_repo_format(const char *var, const char *value, void *vdata)
        return 0;
 }
 
-static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
+static int check_repository_format_gently(const char *gitdir, struct repository_format *candidate, int *nongit_ok)
 {
        struct strbuf sb = STRBUF_INIT;
        struct strbuf err = STRBUF_INIT;
-       struct repository_format candidate;
        int has_common;
 
        has_common = get_common_dir(&sb, gitdir);
        strbuf_addstr(&sb, "/config");
-       read_repository_format(&candidate, sb.buf);
+       read_repository_format(candidate, sb.buf);
        strbuf_release(&sb);
 
        /*
@@ -454,10 +450,10 @@ static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
         * we treat a missing config as a silent "ok", even when nongit_ok
         * is unset.
         */
-       if (candidate.version < 0)
+       if (candidate->version < 0)
                return 0;
 
-       if (verify_repository_format(&candidate, &err) < 0) {
+       if (verify_repository_format(candidate, &err) < 0) {
                if (nongit_ok) {
                        warning("%s", err.buf);
                        strbuf_release(&err);
@@ -467,21 +463,21 @@ static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
                die("%s", err.buf);
        }
 
-       repository_format_precious_objects = candidate.precious_objects;
-       string_list_clear(&candidate.unknown_extensions, 0);
+       repository_format_precious_objects = candidate->precious_objects;
+       string_list_clear(&candidate->unknown_extensions, 0);
        if (!has_common) {
-               if (candidate.is_bare != -1) {
-                       is_bare_repository_cfg = candidate.is_bare;
+               if (candidate->is_bare != -1) {
+                       is_bare_repository_cfg = candidate->is_bare;
                        if (is_bare_repository_cfg == 1)
                                inside_work_tree = -1;
                }
-               if (candidate.work_tree) {
+               if (candidate->work_tree) {
                        free(git_work_tree_cfg);
-                       git_work_tree_cfg = candidate.work_tree;
+                       git_work_tree_cfg = candidate->work_tree;
                        inside_work_tree = -1;
                }
        } else {
-               free(candidate.work_tree);
+               free(candidate->work_tree);
        }
 
        return 0;
@@ -492,6 +488,7 @@ int read_repository_format(struct repository_format *format, const char *path)
        memset(format, 0, sizeof(*format));
        format->version = -1;
        format->is_bare = -1;
+       format->hash_algo = GIT_HASH_SHA1;
        string_list_init(&format->unknown_extensions, 1);
        git_config_from_file(check_repo_format, path, format);
        return format->version;
@@ -546,7 +543,8 @@ void read_gitfile_error_die(int error_code, const char *path, const char *dir)
 
 /*
  * Try to read the location of the git directory from the .git file,
- * return path to git directory if found.
+ * return path to git directory if found. The return value comes from
+ * a shared buffer.
  *
  * On failure, if return_error_code is not NULL, return_error_code
  * will be set to an error code and NULL will be returned. If
@@ -627,6 +625,7 @@ const char *read_gitfile_gently(const char *path, int *return_error_code)
 
 static const char *setup_explicit_git_dir(const char *gitdirenv,
                                          struct strbuf *cwd,
+                                         struct repository_format *repo_fmt,
                                          int *nongit_ok)
 {
        const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
@@ -652,7 +651,7 @@ static const char *setup_explicit_git_dir(const char *gitdirenv,
                die("Not a git repository: '%s'", gitdirenv);
        }
 
-       if (check_repository_format_gently(gitdirenv, nongit_ok)) {
+       if (check_repository_format_gently(gitdirenv, repo_fmt, nongit_ok)) {
                free(gitfile);
                return NULL;
        }
@@ -725,9 +724,10 @@ static const char *setup_explicit_git_dir(const char *gitdirenv,
 
 static const char *setup_discovered_git_dir(const char *gitdir,
                                            struct strbuf *cwd, int offset,
+                                           struct repository_format *repo_fmt,
                                            int *nongit_ok)
 {
-       if (check_repository_format_gently(gitdir, nongit_ok))
+       if (check_repository_format_gently(gitdir, repo_fmt, nongit_ok))
                return NULL;
 
        /* --work-tree is set without --git-dir; use discovered one */
@@ -739,7 +739,7 @@ static const char *setup_discovered_git_dir(const char *gitdir,
                        gitdir = to_free = real_pathdup(gitdir, 1);
                if (chdir(cwd->buf))
                        die_errno("Could not come back to cwd");
-               ret = setup_explicit_git_dir(gitdir, cwd, nongit_ok);
+               ret = setup_explicit_git_dir(gitdir, cwd, repo_fmt, nongit_ok);
                free(to_free);
                return ret;
        }
@@ -771,11 +771,12 @@ static const char *setup_discovered_git_dir(const char *gitdir,
 
 /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
 static const char *setup_bare_git_dir(struct strbuf *cwd, int offset,
+                                     struct repository_format *repo_fmt,
                                      int *nongit_ok)
 {
        int root_len;
 
-       if (check_repository_format_gently(".", nongit_ok))
+       if (check_repository_format_gently(".", repo_fmt, nongit_ok))
                return NULL;
 
        setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);
@@ -787,7 +788,7 @@ static const char *setup_bare_git_dir(struct strbuf *cwd, int offset,
                gitdir = offset == cwd->len ? "." : xmemdupz(cwd->buf, offset);
                if (chdir(cwd->buf))
                        die_errno("Could not come back to cwd");
-               return setup_explicit_git_dir(gitdir, cwd, nongit_ok);
+               return setup_explicit_git_dir(gitdir, cwd, repo_fmt, nongit_ok);
        }
 
        inside_git_dir = 1;
@@ -1028,6 +1029,7 @@ const char *setup_git_directory_gently(int *nongit_ok)
        static struct strbuf cwd = STRBUF_INIT;
        struct strbuf dir = STRBUF_INIT, gitdir = STRBUF_INIT;
        const char *prefix;
+       struct repository_format repo_fmt;
 
        /*
         * We may have read an incomplete configuration before
@@ -1055,18 +1057,18 @@ const char *setup_git_directory_gently(int *nongit_ok)
                prefix = NULL;
                break;
        case GIT_DIR_EXPLICIT:
-               prefix = setup_explicit_git_dir(gitdir.buf, &cwd, nongit_ok);
+               prefix = setup_explicit_git_dir(gitdir.buf, &cwd, &repo_fmt, nongit_ok);
                break;
        case GIT_DIR_DISCOVERED:
                if (dir.len < cwd.len && chdir(dir.buf))
                        die(_("Cannot change to '%s'"), dir.buf);
                prefix = setup_discovered_git_dir(gitdir.buf, &cwd, dir.len,
-                                                 nongit_ok);
+                                                 &repo_fmt, nongit_ok);
                break;
        case GIT_DIR_BARE:
                if (dir.len < cwd.len && chdir(dir.buf))
                        die(_("Cannot change to '%s'"), dir.buf);
-               prefix = setup_bare_git_dir(&cwd, dir.len, nongit_ok);
+               prefix = setup_bare_git_dir(&cwd, dir.len, &repo_fmt, nongit_ok);
                break;
        case GIT_DIR_HIT_CEILING:
                prefix = setup_nongit(cwd.buf, nongit_ok);
@@ -1112,6 +1114,8 @@ const char *setup_git_directory_gently(int *nongit_ok)
                        repo_set_gitdir(the_repository, gitdir);
                        setup_git_env();
                }
+               if (startup_info->have_repository)
+                       repo_set_hash_algo(the_repository, repo_fmt.hash_algo);
        }
 
        strbuf_release(&dir);
@@ -1173,7 +1177,8 @@ int git_config_perm(const char *var, const char *value)
 
 void check_repository_format(void)
 {
-       check_repository_format_gently(get_git_dir(), NULL);
+       struct repository_format repo_fmt;
+       check_repository_format_gently(get_git_dir(), &repo_fmt, NULL);
        startup_info->have_repository = 1;
 }