get-tar-commit-id: parse comment record

diff --git a/setup.c b/setup.c
index ca9e8a949ed869183f16c57520f19fb361100a02..d0c958c3b2a4a7d4b53970b0e623ed8f6e6a4be4 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -411,6 +411,7 @@ static int read_worktree_config(const char *var, const char *value, void *vdata)
        } else if (strcmp(var, "core.worktree") == 0) {
                if (!value)
                        return config_error_nonbool(var);
+               free(data->work_tree);
                data->work_tree = xstrdup(value);
        }
        return 0;
@@ -476,7 +477,7 @@ static int check_repository_format_gently(const char *gitdir, struct repository_
        }
 
        repository_format_precious_objects = candidate->precious_objects;
-       repository_format_partial_clone = candidate->partial_clone;
+       repository_format_partial_clone = xstrdup_or_null(candidate->partial_clone);
        repository_format_worktree_config = candidate->worktree_config;
        string_list_clear(&candidate->unknown_extensions, 0);
 
@@ -499,27 +500,38 @@ static int check_repository_format_gently(const char *gitdir, struct repository_
                }
                if (candidate->work_tree) {
                        free(git_work_tree_cfg);
-                       git_work_tree_cfg = candidate->work_tree;
+                       git_work_tree_cfg = xstrdup(candidate->work_tree);
                        inside_work_tree = -1;
                }
-       } else {
-               free(candidate->work_tree);
        }
 
        return 0;
 }
 
+static void init_repository_format(struct repository_format *format)
+{
+       const struct repository_format fresh = REPOSITORY_FORMAT_INIT;
+
+       memcpy(format, &fresh, sizeof(fresh));
+}
+
 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);
+       clear_repository_format(format);
        git_config_from_file(check_repo_format, path, format);
+       if (format->version == -1)
+               clear_repository_format(format);
        return format->version;
 }
 
+void clear_repository_format(struct repository_format *format)
+{
+       string_list_clear(&format->unknown_extensions, 0);
+       free(format->work_tree);
+       free(format->partial_clone);
+       init_repository_format(format);
+}
+
 int verify_repository_format(const struct repository_format *format,
                             struct strbuf *err)
 {
@@ -997,7 +1009,7 @@ int discover_git_directory(struct strbuf *commondir,
        struct strbuf dir = STRBUF_INIT, err = STRBUF_INIT;
        size_t gitdir_offset = gitdir->len, cwd_len;
        size_t commondir_offset = commondir->len;
-       struct repository_format candidate;
+       struct repository_format candidate = REPOSITORY_FORMAT_INIT;
 
        if (strbuf_getcwd(&dir))
                return -1;
@@ -1034,9 +1046,11 @@ int discover_git_directory(struct strbuf *commondir,
                strbuf_release(&err);
                strbuf_setlen(commondir, commondir_offset);
                strbuf_setlen(gitdir, gitdir_offset);
+               clear_repository_format(&candidate);
                return -1;
        }
 
+       clear_repository_format(&candidate);
        return 0;
 }
 
@@ -1045,7 +1059,7 @@ 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 = NULL;
-       struct repository_format repo_fmt;
+       struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
 
        /*
         * We may have read an incomplete configuration before
@@ -1157,6 +1171,7 @@ const char *setup_git_directory_gently(int *nongit_ok)
 
        strbuf_release(&dir);
        strbuf_release(&gitdir);
+       clear_repository_format(&repo_fmt);
 
        return prefix;
 }
@@ -1214,9 +1229,10 @@ int git_config_perm(const char *var, const char *value)
 
 void check_repository_format(void)
 {
-       struct repository_format repo_fmt;
+       struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
        check_repository_format_gently(get_git_dir(), &repo_fmt, NULL);
        startup_info->have_repository = 1;
+       clear_repository_format(&repo_fmt);
 }
 
 /*