setup: split off a function to handle ordinary .git directories

Finish the clean-up of setup_git_directory_gently() by splitting the
last case of validation+setup (global variables, prefix, check_format,
set_git_dir) into its own function.  Now setup_git_git_directory_gently
itself takes care of discovery only and the functions that pick up
from there are nearby in the source file so they can be easily
compared.

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 5734a1f1c1f30bb2312db1a86c345e895948b75b..d19aa7d7a9633eaf8bb7d65d31bad6b67bf85ead 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -360,6 +360,28 @@ static int cwd_contains_git_dir(const char **gitfile_dirp)
        return is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT);
 }
 
+static const char *setup_discovered_git_dir(const char *work_tree_env,
+               int offset, int len, char *cwd, int *nongit_ok)
+{
+       int root_len;
+
+       inside_git_dir = 0;
+       if (!work_tree_env)
+               inside_work_tree = 1;
+       root_len = offset_1st_component(cwd);
+       git_work_tree_cfg = xstrndup(cwd, offset > root_len ? offset : root_len);
+       if (check_repository_format_gently(nongit_ok))
+               return NULL;
+       if (offset == len)
+               return NULL;
+
+       /* Make "offset" point to past the '/', and add a '/' at the end */
+       offset++;
+       cwd[len++] = '/';
+       cwd[len] = 0;
+       return cwd + offset;
+}
+
 static const char *setup_bare_git_dir(const char *work_tree_env,
                int offset, int len, char *cwd, int *nongit_ok)
 {
@@ -411,7 +433,7 @@ const char *setup_git_directory_gently(int *nongit_ok)
        static char cwd[PATH_MAX+1];
        const char *gitdirenv;
        const char *gitfile_dir;
-       int len, offset, ceil_offset, root_len;
+       int len, offset, ceil_offset;
        dev_t current_device = 0;
        int one_filesystem = 1;
 
@@ -456,7 +478,8 @@ const char *setup_git_directory_gently(int *nongit_ok)
                current_device = get_device_or_die(".", NULL);
        for (;;) {
                if (cwd_contains_git_dir(&gitfile_dir))
-                       break;
+                       return setup_discovered_git_dir(work_tree_env, offset,
+                                                       len, cwd, nongit_ok);
                if (is_git_directory("."))
                        return setup_bare_git_dir(work_tree_env, offset,
                                                        len, cwd, nongit_ok);
@@ -482,22 +505,6 @@ const char *setup_git_directory_gently(int *nongit_ok)
                        die_errno("Cannot change to '%s/..'", cwd);
                }
        }
-
-       inside_git_dir = 0;
-       if (!work_tree_env)
-               inside_work_tree = 1;
-       root_len = offset_1st_component(cwd);
-       git_work_tree_cfg = xstrndup(cwd, offset > root_len ? offset : root_len);
-       if (check_repository_format_gently(nongit_ok))
-               return NULL;
-       if (offset == len)
-               return NULL;
-
-       /* Make "offset" point to past the '/', and add a '/' at the end */
-       offset++;
-       cwd[len++] = '/';
-       cwd[len] = 0;
-       return cwd + offset;
 }
 
 int git_config_perm(const char *var, const char *value)