setup: split off a function to handle hitting ceiling in repo search

Perhaps some day, other similar conditions (hitting the mount point,
hitting the root of the file system) will share this code.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/setup.c b/setup.c
index ec11c462669053b9841166da310457ca8c53ae48..9fc05e2c0a79df1faf313994430d0649f8231d9a 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -378,6 +378,16 @@ static const char *setup_bare_git_dir(const char *work_tree_env,
        return NULL;
 }
 
+static const char *setup_nongit(const char *cwd, int *nongit_ok)
+{
+       if (!nongit_ok)
+               die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
+       if (chdir(cwd))
+               die_errno("Cannot come back to cwd");
+       *nongit_ok = 1;
+       return NULL;
+}
+
 /*
  * 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.
@@ -443,15 +453,8 @@ const char *setup_git_directory_gently(int *nongit_ok)
                        return setup_bare_git_dir(work_tree_env, offset,
                                                        len, cwd, nongit_ok);
                while (--offset > ceil_offset && cwd[offset] != '/');
-               if (offset <= ceil_offset) {
-                       if (nongit_ok) {
-                               if (chdir(cwd))
-                                       die_errno("Cannot come back to cwd");
-                               *nongit_ok = 1;
-                               return NULL;
-                       }
-                       die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
-               }
+               if (offset <= ceil_offset)
+                       return setup_nongit(cwd, nongit_ok);
                if (one_filesystem) {
                        if (stat("..", &buf)) {
                                cwd[offset] = '\0';