Refactor working tree setup

Create a setup_work_tree() that can be used from any command requiring
a working tree conditionally.

Signed-off-by: Mike Hommey <mh@glandium.org>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/cache.h b/cache.h
index bfffa05dff149a948e46b04f6b15589e6f4be07e..497b9f962db0ca7f7c8dda8e848126e22da6685f 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -222,6 +222,7 @@ extern const char *get_git_work_tree(void);
 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
 
 extern const char **get_pathspec(const char *prefix, const char **pathspec);
+extern void setup_work_tree(void);
 extern const char *setup_git_directory_gently(int *);
 extern const char *setup_git_directory(void);
 extern const char *prefix_path(const char *prefix, int len, const char *path);

diff --git a/git.c b/git.c
index 4e10581101c26444da5c7c44a80219b11607705b..eb31c93d0f70abdd6230d72f555adbfb121df613 100644 (file)
--- a/git.c
+++ b/git.c
@@ -249,14 +249,9 @@ static int run_command(struct cmd_struct *p, int argc, const char **argv)
                prefix = setup_git_directory();
        if (p->option & USE_PAGER)
                setup_pager();
-       if (p->option & NEED_WORK_TREE) {
-               const char *work_tree = get_git_work_tree();
-               const char *git_dir = get_git_dir();
-               if (!is_absolute_path(git_dir))
-                       set_git_dir(make_absolute_path(git_dir));
-               if (!work_tree || chdir(work_tree))
-                       die("%s must be run in a work tree", p->cmd);
-       }
+       if (p->option & NEED_WORK_TREE)
+               setup_work_tree();
+
        trace_argv_printf(argv, argc, "trace: built-in: git");
 
        status = p->fn(argc, argv, prefix);

diff --git a/setup.c b/setup.c
index 145eca50f41d811c4c8fcb21ed2604e6b2971aba..df006d9c4a674b224f36318742ef01b339d797b3 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -206,6 +206,15 @@ static const char *set_work_tree(const char *dir)
        return NULL;
 }
 
+void setup_work_tree(void) {
+       const char *work_tree = get_git_work_tree();
+       const char *git_dir = get_git_dir();
+       if (!is_absolute_path(git_dir))
+               set_git_dir(make_absolute_path(git_dir));
+       if (!work_tree || chdir(work_tree))
+               die("This operation must be run in a work tree");
+}
+
 /*
  * We cannot decide in this function whether we are in the work tree or
  * not, since the config can only be read _after_ this function was called.