From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Date: Wed, 1 Aug 2007 00:29:38 +0000 (+0100)
Subject: Add set_git_dir() function
X-Git-Tag: v1.5.3-rc4~19
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=d7ac12b25d375d32372b13f74e90425ca21d5dc1;p=git.git

Add set_git_dir() function

With the function set_git_dir() you can reset the path that will
be used for git_path(), git_dir() and friends.

The responsibility to close files and throw away information from the
old git_dir lies with the caller.

Signed-off-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 98af53040..e1f94cbad 100644
--- a/cache.h
+++ b/cache.h
@@ -214,6 +214,7 @@ extern char *get_object_directory(void);
 extern char *get_refs_directory(void);
 extern char *get_index_file(void);
 extern char *get_graft_file(void);
+extern int set_git_dir(const char *path);
 
 #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
 
diff --git a/environment.c b/environment.c
index f83fb9e44..a571fae60 100644
--- a/environment.c
+++ b/environment.c
@@ -107,3 +107,11 @@ char *get_graft_file(void)
 		setup_git_env();
 	return git_graft_file;
 }
+
+int set_git_dir(const char *path)
+{
+	if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
+		return error("Could not set GIT_DIR to '%s'", path);
+	setup_git_env();
+	return 0;
+}