setup: split off a function to checks working dir for .git file

The repository discovery procedure looks something like this:

	while (same filesystem) {
		check .git in working dir
		check .
		chdir(..)
	}

Add a function for the first step to make the actual code look a bit
closer to that pseudocode.

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 16bee6d485349602db8aa5de28b997e7ef82a731..3d25d0f205ba7ad555a7f26e40be7590ac16d926 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -348,6 +348,18 @@ static const char *setup_explicit_git_dir(const char *gitdirenv,
        return retval;
 }
 
+static int cwd_contains_git_dir(const char **gitfile_dirp)
+{
+       const char *gitfile_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
+       *gitfile_dirp = gitfile_dir;
+       if (gitfile_dir) {
+               if (set_git_dir(gitfile_dir))
+                       die("Repository setup failed");
+               return 1;
+       }
+       return is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT);
+}
+
 /*
  * 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.
@@ -407,13 +419,7 @@ const char *setup_git_directory_gently(int *nongit_ok)
                current_device = buf.st_dev;
        }
        for (;;) {
-               gitfile_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
-               if (gitfile_dir) {
-                       if (set_git_dir(gitfile_dir))
-                               die("Repository setup failed");
-                       break;
-               }
-               if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
+               if (cwd_contains_git_dir(&gitfile_dir))
                        break;
                if (is_git_directory(".")) {
                        inside_git_dir = 1;