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Provide API access to init_db()

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The caller first calls set_git_dir() to specify the GIT_DIR, and then
calls init_db() to initialize it. This also cleans up various parts of
the code to account for the fact that everything is done with GIT_DIR
set, so it's unnecessary to pass the specified directory around.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Daniel Barkalow 2008-04-27 13:39:27 -04:00 committed by Junio C Hamano
parent 19757d80e5
commit f225aeb278
2 changed files with 134 additions and 121 deletions
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251
builtin-init-db.c
View File

@ -104,12 +104,14 @@ static void copy_templates_1(char *path, int baselen,
}
}
static void copy_templates(const char *git_dir, int len, const char *template_dir)
static void copy_templates(const char *template_dir)
{
char path[PATH_MAX];
char template_path[PATH_MAX];
int template_len;
DIR *dir;
const char *git_dir = get_git_dir();
int len = strlen(git_dir);
if (!template_dir)
template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
@ -156,6 +158,8 @@ static void copy_templates(const char *git_dir, int len, const char *template_di
}
memcpy(path, git_dir, len);
if (len && path[len - 1] != '/')
path[len++] = '/';
path[len] = 0;
copy_templates_1(path, len,
template_path, template_len,
@ -163,8 +167,9 @@ static void copy_templates(const char *git_dir, int len, const char *template_di
closedir(dir);
}
static int create_default_files(const char *git_dir, const char *template_path)
static int create_default_files(const char *template_path)
{
const char *git_dir = get_git_dir();
unsigned len = strlen(git_dir);
static char path[PATH_MAX];
struct stat st1;
@ -183,19 +188,15 @@ static int create_default_files(const char *git_dir, const char *template_path)
/*
* Create .git/refs/{heads,tags}
*/
strcpy(path + len, "refs");
safe_create_dir(path, 1);
strcpy(path + len, "refs/heads");
safe_create_dir(path, 1);
strcpy(path + len, "refs/tags");
safe_create_dir(path, 1);
safe_create_dir(git_path("refs"), 1);
safe_create_dir(git_path("refs/heads"), 1);
safe_create_dir(git_path("refs/tags"), 1);
/* First copy the templates -- we might have the default
* config file there, in which case we would want to read
* from it after installing.
*/
path[len] = 0;
copy_templates(path, len, template_path);
copy_templates(template_path);
git_config(git_default_config);
@ -204,14 +205,10 @@ static int create_default_files(const char *git_dir, const char *template_path)
* shared-repository settings, we would need to fix them up.
*/
if (shared_repository) {
path[len] = 0;
adjust_shared_perm(path);
strcpy(path + len, "refs");
adjust_shared_perm(path);
strcpy(path + len, "refs/heads");
adjust_shared_perm(path);
strcpy(path + len, "refs/tags");
adjust_shared_perm(path);
adjust_shared_perm(get_git_dir());
adjust_shared_perm(git_path("refs"));
adjust_shared_perm(git_path("refs/heads"));
adjust_shared_perm(git_path("refs/tags"));
}
/*
@ -251,8 +248,10 @@ static int create_default_files(const char *git_dir, const char *template_path)
/* allow template config file to override the default */
if (log_all_ref_updates == -1)
git_config_set("core.logallrefupdates", "true");
if (work_tree != git_work_tree_cfg)
if (prefixcmp(git_dir, work_tree) ||
strcmp(git_dir + strlen(work_tree), "/.git")) {
git_config_set("core.worktree", work_tree);
}
}
/* Check if symlink is supported in the work tree */
@ -272,106 +271,13 @@ static int create_default_files(const char *git_dir, const char *template_path)
return reinit;
}
static void guess_repository_type(const char *git_dir)
int init_db(const char *template_dir, unsigned int flags)
{
char cwd[PATH_MAX];
const char *slash;
if (0 <= is_bare_repository_cfg)
return;
if (!git_dir)
return;
/*
* "GIT_DIR=. git init" is always bare.
* "GIT_DIR=`pwd` git init" too.
*/
if (!strcmp(".", git_dir))
goto force_bare;
if (!getcwd(cwd, sizeof(cwd)))
die("cannot tell cwd");
if (!strcmp(git_dir, cwd))
goto force_bare;
/*
* "GIT_DIR=.git or GIT_DIR=something/.git is usually not.
*/
if (!strcmp(git_dir, ".git"))
return;
slash = strrchr(git_dir, '/');
if (slash && !strcmp(slash, "/.git"))
return;
/*
* Otherwise it is often bare. At this point
* we are just guessing.
*/
force_bare:
is_bare_repository_cfg = 1;
return;
}
static const char init_db_usage[] =
"git-init [-q | --quiet] [--template=<template-directory>] [--shared]";
/*
* If you want to, you can share the DB area with any number of branches.
* That has advantages: you can save space by sharing all the SHA1 objects.
* On the other hand, it might just make lookup slower and messier. You
* be the judge. The default case is to have one DB per managed directory.
*/
int cmd_init_db(int argc, const char **argv, const char *prefix)
{
const char *git_dir;
const char *sha1_dir;
const char *template_dir = NULL;
char *path;
int len, i, reinit;
int quiet = 0;
int len, reinit;
for (i = 1; i < argc; i++, argv++) {
const char *arg = argv[1];
if (!prefixcmp(arg, "--template="))
template_dir = arg+11;
else if (!strcmp(arg, "--shared"))
shared_repository = PERM_GROUP;
else if (!prefixcmp(arg, "--shared="))
shared_repository = git_config_perm("arg", arg+9);
else if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet"))
quiet = 1;
else
usage(init_db_usage);
}
/*
* GIT_WORK_TREE makes sense only in conjunction with GIT_DIR
* without --bare. Catch the error early.
*/
git_dir = getenv(GIT_DIR_ENVIRONMENT);
if ((!git_dir || is_bare_repository_cfg == 1)
&& getenv(GIT_WORK_TREE_ENVIRONMENT))
die("%s (or --work-tree=<directory>) not allowed without "
"specifying %s (or --git-dir=<directory>)",
GIT_WORK_TREE_ENVIRONMENT,
GIT_DIR_ENVIRONMENT);
guess_repository_type(git_dir);
if (is_bare_repository_cfg <= 0) {
git_work_tree_cfg = xcalloc(PATH_MAX, 1);
if (!getcwd(git_work_tree_cfg, PATH_MAX))
die ("Cannot access current working directory.");
if (access(get_git_work_tree(), X_OK))
die ("Cannot access work tree '%s'",
get_git_work_tree());
}
/*
* Set up the default .git directory contents
*/
git_dir = getenv(GIT_DIR_ENVIRONMENT);
if (!git_dir)
git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
safe_create_dir(git_dir, 0);
safe_create_dir(get_git_dir(), 0);
/* Check to see if the repository version is right.
* Note that a newly created repository does not have
@ -380,11 +286,8 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
*/
check_repository_format();
reinit = create_default_files(git_dir, template_dir);
reinit = create_default_files(template_dir);
/*
* And set up the object store.
*/
sha1_dir = get_object_directory();
len = strlen(sha1_dir);
path = xmalloc(len + 40);
@ -414,11 +317,117 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
git_config_set("receive.denyNonFastforwards", "true");
}
if (!quiet)
if (!(flags & INIT_DB_QUIET))
printf("%s%s Git repository in %s/\n",
reinit ? "Reinitialized existing" : "Initialized empty",
shared_repository ? " shared" : "",
git_dir);
get_git_dir());
return 0;
}
static int guess_repository_type(const char *git_dir)
{
char cwd[PATH_MAX];
const char *slash;
/*
* "GIT_DIR=. git init" is always bare.
* "GIT_DIR=`pwd` git init" too.
*/
if (!strcmp(".", git_dir))
return 1;
if (!getcwd(cwd, sizeof(cwd)))
die("cannot tell cwd");
if (!strcmp(git_dir, cwd))
return 1;
/*
* "GIT_DIR=.git or GIT_DIR=something/.git is usually not.
*/
if (!strcmp(git_dir, ".git"))
return 0;
slash = strrchr(git_dir, '/');
if (slash && !strcmp(slash, "/.git"))
return 0;
/*
* Otherwise it is often bare. At this point
* we are just guessing.
*/
return 1;
}
static const char init_db_usage[] =
"git-init [-q | --quiet] [--template=<template-directory>] [--shared]";
/*
* If you want to, you can share the DB area with any number of branches.
* That has advantages: you can save space by sharing all the SHA1 objects.
* On the other hand, it might just make lookup slower and messier. You
* be the judge. The default case is to have one DB per managed directory.
*/
int cmd_init_db(int argc, const char **argv, const char *prefix)
{
const char *git_dir;
const char *template_dir = NULL;
unsigned int flags = 0;
int i;
for (i = 1; i < argc; i++, argv++) {
const char *arg = argv[1];
if (!prefixcmp(arg, "--template="))
template_dir = arg+11;
else if (!strcmp(arg, "--shared"))
shared_repository = PERM_GROUP;
else if (!prefixcmp(arg, "--shared="))
shared_repository = git_config_perm("arg", arg+9);
else if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet"))
flags |= INIT_DB_QUIET;
else
usage(init_db_usage);
}
/*
* GIT_WORK_TREE makes sense only in conjunction with GIT_DIR
* without --bare. Catch the error early.
*/
git_dir = getenv(GIT_DIR_ENVIRONMENT);
if ((!git_dir || is_bare_repository_cfg == 1)
&& getenv(GIT_WORK_TREE_ENVIRONMENT))
die("%s (or --work-tree=<directory>) not allowed without "
"specifying %s (or --git-dir=<directory>)",
GIT_WORK_TREE_ENVIRONMENT,
GIT_DIR_ENVIRONMENT);
/*
* Set up the default .git directory contents
*/
if (!git_dir)
git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
if (is_bare_repository_cfg < 0)
is_bare_repository_cfg = guess_repository_type(git_dir);
if (!is_bare_repository_cfg) {
if (git_dir) {
const char *git_dir_parent = strrchr(git_dir, '/');
if (git_dir_parent) {
char *rel = xstrndup(git_dir, git_dir_parent - git_dir);
git_work_tree_cfg = xstrdup(make_absolute_path(rel));
free(rel);
}
}
if (!git_work_tree_cfg) {
git_work_tree_cfg = xcalloc(PATH_MAX, 1);
if (!getcwd(git_work_tree_cfg, PATH_MAX))
die ("Cannot access current working directory.");
}
if (access(get_git_work_tree(), X_OK))
die ("Cannot access work tree '%s'",
get_git_work_tree());
}
set_git_dir(make_absolute_path(git_dir));
return init_db(template_dir, flags);
}

4
cache.h
View File

@ -324,6 +324,10 @@ extern const char *prefix_filename(const char *prefix, int len, const char *path
extern void verify_filename(const char *prefix, const char *name);
extern void verify_non_filename(const char *prefix, const char *name);
#define INIT_DB_QUIET 0x0001
extern int init_db(const char *template_dir, unsigned int flags);
#define alloc_nr(x) (((x)+16)*3/2)
/*