From 8ac069ac0ab34e751e5f96b0244a5fec10f3e54f Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Mon, 9 May 2005 22:57:58 -0700 Subject: Introduce GIT_DIR environment variable. During the mailing list discussion on renaming GIT_ environment variables, people felt that having one environment that lets the user (or Porcelain) specify both SHA1_FILE_DIRECTORY (now GIT_OBJECT_DIRECTORY) and GIT_INDEX_FILE for the default layout would be handy. This change introduces GIT_DIR environment variable, from which the defaults for GIT_INDEX_FILE and GIT_OBJECT_DIRECTORY are derived. When GIT_DIR is not defined, it defaults to ".git". GIT_INDEX_FILE defaults to "$GIT_DIR/index" and GIT_OBJECT_DIRECTORY defaults to "$GIT_DIR/objects". Special thanks for ideas and discussions go to Petr Baudis and Daniel Barkalow. Bugs are mine ;-) Signed-off-by: Junio C Hamano --- sha1_file.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) (limited to 'sha1_file.c') diff --git a/sha1_file.c b/sha1_file.c index 430f5fdfb..7ca0a386f 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -59,6 +59,38 @@ int get_sha1_file(const char *path, unsigned char *result) return get_sha1_hex(buffer, result); } +static char *git_dir, *git_object_dir, *git_index_file; +static void setup_git_env(void) +{ + git_dir = gitenv(GIT_DIR_ENVIRONMENT); + if (!git_dir) + git_dir = DEFAULT_GIT_DIR_ENVIRONMENT; + git_object_dir = gitenv(DB_ENVIRONMENT); + if (!git_object_dir) { + git_object_dir = xmalloc(strlen(git_dir) + 9); + sprintf(git_object_dir, "%s/objects", git_dir); + } + git_index_file = gitenv(INDEX_ENVIRONMENT); + if (!git_index_file) { + git_index_file = xmalloc(strlen(git_dir) + 7); + sprintf(git_index_file, "%s/index", git_dir); + } +} + +char *get_object_directory(void) +{ + if (!git_object_dir) + setup_git_env(); + return git_object_dir; +} + +char *get_index_file(void) +{ + if (!git_index_file) + setup_git_env(); + return git_index_file; +} + int get_sha1(const char *str, unsigned char *sha1) { static char pathname[PATH_MAX]; @@ -70,15 +102,16 @@ int get_sha1(const char *str, unsigned char *sha1) "refs/snap", NULL }; - const char *gitdir; const char **p; if (!get_sha1_hex(str, sha1)) return 0; - gitdir = ".git"; + if (!git_dir) + setup_git_env(); for (p = prefix; *p; p++) { - snprintf(pathname, sizeof(pathname), "%s/%s/%s", gitdir, *p, str); + snprintf(pathname, sizeof(pathname), "%s/%s/%s", + git_dir, *p, str); if (!get_sha1_file(pathname, sha1)) return 0; } -- cgit v1.2.1