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submodule.c
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submodule.c
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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "git2/config.h"
#include "git2/sys/config.h"
#include "git2/types.h"
#include "git2/index.h"
#include "buffer.h"
#include "buf_text.h"
#include "vector.h"
#include "posix.h"
#include "config_file.h"
#include "config.h"
#include "repository.h"
#include "submodule.h"
#include "tree.h"
#include "iterator.h"
#include "path.h"
#include "index.h"
#define GIT_MODULES_FILE ".gitmodules"
static git_cvar_map _sm_update_map[] = {
{GIT_CVAR_STRING, "checkout", GIT_SUBMODULE_UPDATE_CHECKOUT},
{GIT_CVAR_STRING, "rebase", GIT_SUBMODULE_UPDATE_REBASE},
{GIT_CVAR_STRING, "merge", GIT_SUBMODULE_UPDATE_MERGE},
{GIT_CVAR_STRING, "none", GIT_SUBMODULE_UPDATE_NONE},
{GIT_CVAR_FALSE, NULL, GIT_SUBMODULE_UPDATE_NONE},
{GIT_CVAR_TRUE, NULL, GIT_SUBMODULE_UPDATE_CHECKOUT},
};
static git_cvar_map _sm_ignore_map[] = {
{GIT_CVAR_STRING, "none", GIT_SUBMODULE_IGNORE_NONE},
{GIT_CVAR_STRING, "untracked", GIT_SUBMODULE_IGNORE_UNTRACKED},
{GIT_CVAR_STRING, "dirty", GIT_SUBMODULE_IGNORE_DIRTY},
{GIT_CVAR_STRING, "all", GIT_SUBMODULE_IGNORE_ALL},
{GIT_CVAR_FALSE, NULL, GIT_SUBMODULE_IGNORE_NONE},
{GIT_CVAR_TRUE, NULL, GIT_SUBMODULE_IGNORE_ALL},
};
static git_cvar_map _sm_recurse_map[] = {
{GIT_CVAR_STRING, "on-demand", GIT_SUBMODULE_RECURSE_ONDEMAND},
{GIT_CVAR_FALSE, NULL, GIT_SUBMODULE_RECURSE_NO},
{GIT_CVAR_TRUE, NULL, GIT_SUBMODULE_RECURSE_YES},
};
enum {
CACHE_OK = 0,
CACHE_REFRESH = 1,
CACHE_FLUSH = 2
};
enum {
GITMODULES_EXISTING = 0,
GITMODULES_CREATE = 1,
};
static kh_inline khint_t str_hash_no_trailing_slash(const char *s)
{
khint_t h;
for (h = 0; *s; ++s)
if (s[1] != '\0' || *s != '/')
h = (h << 5) - h + *s;
return h;
}
static kh_inline int str_equal_no_trailing_slash(const char *a, const char *b)
{
size_t alen = a ? strlen(a) : 0;
size_t blen = b ? strlen(b) : 0;
if (alen > 0 && a[alen - 1] == '/')
alen--;
if (blen > 0 && b[blen - 1] == '/')
blen--;
return (alen == blen && strncmp(a, b, alen) == 0);
}
__KHASH_IMPL(
str, static kh_inline, const char *, void *, 1,
str_hash_no_trailing_slash, str_equal_no_trailing_slash);
static int submodule_cache_init(git_repository *repo, int refresh);
static void submodule_cache_free(git_submodule_cache *cache);
static git_config_backend *open_gitmodules(git_submodule_cache *, int gitmod);
static int get_url_base(git_buf *url, git_repository *repo);
static int lookup_head_remote_key(git_buf *remote_key, git_repository *repo);
static int submodule_get(git_submodule **, git_submodule_cache *, const char *, const char *);
static int submodule_load_from_config(const git_config_entry *, void *);
static int submodule_load_from_wd_lite(git_submodule *);
static void submodule_get_index_status(unsigned int *, git_submodule *);
static void submodule_get_wd_status(unsigned int *, git_submodule *, git_repository *, git_submodule_ignore_t);
static int submodule_cmp(const void *a, const void *b)
{
return strcmp(((git_submodule *)a)->name, ((git_submodule *)b)->name);
}
static int submodule_config_key_trunc_puts(git_buf *key, const char *suffix)
{
ssize_t idx = git_buf_rfind(key, '.');
git_buf_truncate(key, (size_t)(idx + 1));
return git_buf_puts(key, suffix);
}
/* lookup submodule or return ENOTFOUND if it doesn't exist */
static int submodule_lookup(
git_submodule **out,
git_submodule_cache *cache,
const char *name,
const char *alternate)
{
khiter_t pos;
/* lock cache */
pos = git_strmap_lookup_index(cache->submodules, name);
if (!git_strmap_valid_index(cache->submodules, pos) && alternate)
pos = git_strmap_lookup_index(cache->submodules, alternate);
if (!git_strmap_valid_index(cache->submodules, pos)) {
/* unlock cache */
return GIT_ENOTFOUND; /* don't set error - caller will cope */
}
if (out != NULL) {
git_submodule *sm = git_strmap_value_at(cache->submodules, pos);
GIT_REFCOUNT_INC(sm);
*out = sm;
}
/* unlock cache */
return 0;
}
/* clear a set of flags on all submodules */
static void submodule_cache_clear_flags(
git_submodule_cache *cache, uint32_t mask)
{
git_submodule *sm;
uint32_t inverted_mask = ~mask;
git_strmap_foreach_value(cache->submodules, sm, {
sm->flags &= inverted_mask;
});
}
/*
* PUBLIC APIS
*/
bool git_submodule__is_submodule(git_repository *repo, const char *name)
{
git_strmap *map;
if (submodule_cache_init(repo, CACHE_OK) < 0) {
giterr_clear();
return false;
}
if (!repo->_submodules || !(map = repo->_submodules->submodules))
return false;
return git_strmap_valid_index(map, git_strmap_lookup_index(map, name));
}
static void submodule_set_lookup_error(int error, const char *name)
{
if (!error)
return;
giterr_set(GITERR_SUBMODULE, (error == GIT_ENOTFOUND) ?
"No submodule named '%s'" :
"Submodule '%s' has not been added yet", name);
}
int git_submodule__lookup(
git_submodule **out, /* NULL if user only wants to test existence */
git_repository *repo,
const char *name) /* trailing slash is allowed */
{
int error;
assert(repo && name);
if ((error = submodule_cache_init(repo, CACHE_OK)) < 0)
return error;
if ((error = submodule_lookup(out, repo->_submodules, name, NULL)) < 0)
submodule_set_lookup_error(error, name);
return error;
}
int git_submodule_lookup(
git_submodule **out, /* NULL if user only wants to test existence */
git_repository *repo,
const char *name) /* trailing slash is allowed */
{
int error;
assert(repo && name);
if ((error = submodule_cache_init(repo, CACHE_REFRESH)) < 0)
return error;
if ((error = submodule_lookup(out, repo->_submodules, name, NULL)) < 0) {
/* check if a plausible submodule exists at path */
if (git_repository_workdir(repo)) {
git_buf path = GIT_BUF_INIT;
if (git_buf_join3(&path,
'/', git_repository_workdir(repo), name, DOT_GIT) < 0)
return -1;
if (git_path_exists(path.ptr))
error = GIT_EEXISTS;
git_buf_free(&path);
}
submodule_set_lookup_error(error, name);
}
return error;
}
static void submodule_free_dup(void *sm)
{
git_submodule_free(sm);
}
int git_submodule_foreach(
git_repository *repo,
int (*callback)(git_submodule *sm, const char *name, void *payload),
void *payload)
{
int error;
size_t i;
git_submodule *sm;
git_submodule_cache *cache;
git_vector snapshot = GIT_VECTOR_INIT;
assert(repo && callback);
if ((error = submodule_cache_init(repo, CACHE_REFRESH)) < 0)
return error;
cache = repo->_submodules;
if (git_mutex_lock(&cache->lock) < 0) {
giterr_set(GITERR_OS, "Unable to acquire lock on submodule cache");
return -1;
}
if (!(error = git_vector_init(
&snapshot, kh_size(cache->submodules), submodule_cmp))) {
git_strmap_foreach_value(cache->submodules, sm, {
if ((error = git_vector_insert(&snapshot, sm)) < 0)
break;
GIT_REFCOUNT_INC(sm);
});
}
git_mutex_unlock(&cache->lock);
if (error < 0)
goto done;
git_vector_uniq(&snapshot, submodule_free_dup);
git_vector_foreach(&snapshot, i, sm) {
if ((error = callback(sm, sm->name, payload)) != 0) {
giterr_set_after_callback(error);
break;
}
}
done:
git_vector_foreach(&snapshot, i, sm)
git_submodule_free(sm);
git_vector_free(&snapshot);
return error;
}
void git_submodule_cache_free(git_repository *repo)
{
git_submodule_cache *cache;
assert(repo);
if ((cache = git__swap(repo->_submodules, NULL)) != NULL)
submodule_cache_free(cache);
}
int git_submodule_add_setup(
git_submodule **out,
git_repository *repo,
const char *url,
const char *path,
int use_gitlink)
{
int error = 0;
git_config_backend *mods = NULL;
git_submodule *sm = NULL;
git_buf name = GIT_BUF_INIT, real_url = GIT_BUF_INIT;
git_repository_init_options initopt = GIT_REPOSITORY_INIT_OPTIONS_INIT;
git_repository *subrepo = NULL;
assert(repo && url && path);
/* see if there is already an entry for this submodule */
if (git_submodule_lookup(NULL, repo, path) < 0)
giterr_clear();
else {
giterr_set(GITERR_SUBMODULE,
"Attempt to add submodule '%s' that already exists", path);
return GIT_EEXISTS;
}
/* resolve parameters */
if ((error = git_submodule_resolve_url(&real_url, repo, url)) < 0)
goto cleanup;
/* validate and normalize path */
if (git__prefixcmp(path, git_repository_workdir(repo)) == 0)
path += strlen(git_repository_workdir(repo));
if (git_path_root(path) >= 0) {
giterr_set(GITERR_SUBMODULE, "Submodule path must be a relative path");
error = -1;
goto cleanup;
}
/* update .gitmodules */
if (!(mods = open_gitmodules(repo->_submodules, GITMODULES_CREATE))) {
giterr_set(GITERR_SUBMODULE,
"Adding submodules to a bare repository is not supported");
return -1;
}
if ((error = git_buf_printf(&name, "submodule.%s.path", path)) < 0 ||
(error = git_config_file_set_string(mods, name.ptr, path)) < 0)
goto cleanup;
if ((error = submodule_config_key_trunc_puts(&name, "url")) < 0 ||
(error = git_config_file_set_string(mods, name.ptr, real_url.ptr)) < 0)
goto cleanup;
git_buf_clear(&name);
/* init submodule repository and add origin remote as needed */
error = git_buf_joinpath(&name, git_repository_workdir(repo), path);
if (error < 0)
goto cleanup;
/* New style: sub-repo goes in <repo-dir>/modules/<name>/ with a
* gitlink in the sub-repo workdir directory to that repository
*
* Old style: sub-repo goes directly into repo/<name>/.git/
*/
initopt.flags = GIT_REPOSITORY_INIT_MKPATH |
GIT_REPOSITORY_INIT_NO_REINIT;
initopt.origin_url = real_url.ptr;
if (git_path_exists(name.ptr) &&
git_path_contains(&name, DOT_GIT))
{
/* repo appears to already exist - reinit? */
}
else if (use_gitlink) {
git_buf repodir = GIT_BUF_INIT;
error = git_buf_join3(
&repodir, '/', git_repository_path(repo), "modules", path);
if (error < 0)
goto cleanup;
initopt.workdir_path = name.ptr;
initopt.flags |= GIT_REPOSITORY_INIT_NO_DOTGIT_DIR;
error = git_repository_init_ext(&subrepo, repodir.ptr, &initopt);
git_buf_free(&repodir);
}
else {
error = git_repository_init_ext(&subrepo, name.ptr, &initopt);
}
if (error < 0)
goto cleanup;
/* add submodule to hash and "reload" it */
if (git_mutex_lock(&repo->_submodules->lock) < 0) {
giterr_set(GITERR_OS, "Unable to acquire lock on submodule cache");
error = -1;
goto cleanup;
}
if (!(error = submodule_get(&sm, repo->_submodules, path, NULL)) &&
!(error = git_submodule_reload(sm, false)))
error = git_submodule_init(sm, false);
git_mutex_unlock(&repo->_submodules->lock);
cleanup:
if (error && sm) {
git_submodule_free(sm);
sm = NULL;
}
if (out != NULL)
*out = sm;
git_config_file_free(mods);
git_repository_free(subrepo);
git_buf_free(&real_url);
git_buf_free(&name);
return error;
}
int git_submodule_add_finalize(git_submodule *sm)
{
int error;
git_index *index;
assert(sm);
if ((error = git_repository_index__weakptr(&index, sm->repo)) < 0 ||
(error = git_index_add_bypath(index, GIT_MODULES_FILE)) < 0)
return error;
return git_submodule_add_to_index(sm, true);
}
int git_submodule_add_to_index(git_submodule *sm, int write_index)
{
int error;
git_repository *sm_repo = NULL;
git_index *index;
git_buf path = GIT_BUF_INIT;
git_commit *head;
git_index_entry entry;
struct stat st;
assert(sm);
/* force reload of wd OID by git_submodule_open */
sm->flags = sm->flags & ~GIT_SUBMODULE_STATUS__WD_OID_VALID;
if ((error = git_repository_index__weakptr(&index, sm->repo)) < 0 ||
(error = git_buf_joinpath(
&path, git_repository_workdir(sm->repo), sm->path)) < 0 ||
(error = git_submodule_open(&sm_repo, sm)) < 0)
goto cleanup;
/* read stat information for submodule working directory */
if (p_stat(path.ptr, &st) < 0) {
giterr_set(GITERR_SUBMODULE,
"Cannot add submodule without working directory");
error = -1;
goto cleanup;
}
memset(&entry, 0, sizeof(entry));
entry.path = sm->path;
git_index_entry__init_from_stat(
&entry, &st, !(git_index_caps(index) & GIT_INDEXCAP_NO_FILEMODE));
/* calling git_submodule_open will have set sm->wd_oid if possible */
if ((sm->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID) == 0) {
giterr_set(GITERR_SUBMODULE,
"Cannot add submodule without HEAD to index");
error = -1;
goto cleanup;
}
git_oid_cpy(&entry.id, &sm->wd_oid);
if ((error = git_commit_lookup(&head, sm_repo, &sm->wd_oid)) < 0)
goto cleanup;
entry.ctime.seconds = git_commit_time(head);
entry.ctime.nanoseconds = 0;
entry.mtime.seconds = git_commit_time(head);
entry.mtime.nanoseconds = 0;
git_commit_free(head);
/* add it */
error = git_index_add(index, &entry);
/* write it, if requested */
if (!error && write_index) {
error = git_index_write(index);
if (!error)
git_oid_cpy(&sm->index_oid, &sm->wd_oid);
}
cleanup:
git_repository_free(sm_repo);
git_buf_free(&path);
return error;
}
const char *git_submodule_ignore_to_str(git_submodule_ignore_t ignore)
{
int i;
for (i = 0; i < (int)ARRAY_SIZE(_sm_ignore_map); ++i)
if (_sm_ignore_map[i].map_value == ignore)
return _sm_ignore_map[i].str_match;
return NULL;
}
const char *git_submodule_update_to_str(git_submodule_update_t update)
{
int i;
for (i = 0; i < (int)ARRAY_SIZE(_sm_update_map); ++i)
if (_sm_update_map[i].map_value == update)
return _sm_update_map[i].str_match;
return NULL;
}
const char *git_submodule_recurse_to_str(git_submodule_recurse_t recurse)
{
int i;
for (i = 0; i < (int)ARRAY_SIZE(_sm_recurse_map); ++i)
if (_sm_recurse_map[i].map_value == recurse)
return _sm_recurse_map[i].str_match;
return NULL;
}
int git_submodule_save(git_submodule *submodule)
{
int error = 0;
git_config_backend *mods;
git_buf key = GIT_BUF_INIT;
const char *val;
assert(submodule);
mods = open_gitmodules(submodule->repo->_submodules, GITMODULES_CREATE);
if (!mods) {
giterr_set(GITERR_SUBMODULE,
"Adding submodules to a bare repository is not supported");
return -1;
}
if ((error = git_buf_printf(&key, "submodule.%s.", submodule->name)) < 0)
goto cleanup;
/* save values for path, url, update, ignore, fetchRecurseSubmodules */
if ((error = submodule_config_key_trunc_puts(&key, "path")) < 0 ||
(error = git_config_file_set_string(mods, key.ptr, submodule->path)) < 0)
goto cleanup;
if ((error = submodule_config_key_trunc_puts(&key, "url")) < 0 ||
(error = git_config_file_set_string(mods, key.ptr, submodule->url)) < 0)
goto cleanup;
if ((error = submodule_config_key_trunc_puts(&key, "branch")) < 0 ||
(error = git_config_file_set_string(mods, key.ptr, submodule->branch)) < 0)
goto cleanup;
if (!(error = submodule_config_key_trunc_puts(&key, "update")) &&
(val = git_submodule_update_to_str(submodule->update)) != NULL)
error = git_config_file_set_string(mods, key.ptr, val);
if (error < 0)
goto cleanup;
if (!(error = submodule_config_key_trunc_puts(&key, "ignore")) &&
(val = git_submodule_ignore_to_str(submodule->ignore)) != NULL)
error = git_config_file_set_string(mods, key.ptr, val);
if (error < 0)
goto cleanup;
if (!(error = submodule_config_key_trunc_puts(&key, "fetchRecurseSubmodules")) &&
(val = git_submodule_recurse_to_str(submodule->fetch_recurse)) != NULL)
error = git_config_file_set_string(mods, key.ptr, val);
if (error < 0)
goto cleanup;
/* update internal defaults */
submodule->ignore_default = submodule->ignore;
submodule->update_default = submodule->update;
submodule->fetch_recurse_default = submodule->fetch_recurse;
submodule->flags |= GIT_SUBMODULE_STATUS_IN_CONFIG;
cleanup:
git_config_file_free(mods);
git_buf_free(&key);
return error;
}
git_repository *git_submodule_owner(git_submodule *submodule)
{
assert(submodule);
return submodule->repo;
}
const char *git_submodule_name(git_submodule *submodule)
{
assert(submodule);
return submodule->name;
}
const char *git_submodule_path(git_submodule *submodule)
{
assert(submodule);
return submodule->path;
}
const char *git_submodule_url(git_submodule *submodule)
{
assert(submodule);
return submodule->url;
}
int git_submodule_resolve_url(git_buf *out, git_repository *repo, const char *url)
{
int error = 0;
assert(out && repo && url);
git_buf_sanitize(out);
if (git_path_is_relative(url)) {
if (!(error = get_url_base(out, repo)))
error = git_path_apply_relative(out, url);
} else if (strchr(url, ':') != NULL || url[0] == '/') {
error = git_buf_sets(out, url);
} else {
giterr_set(GITERR_SUBMODULE, "Invalid format for submodule URL");
error = -1;
}
return error;
}
const char *git_submodule_branch(git_submodule *submodule)
{
assert(submodule);
return submodule->branch;
}
int git_submodule_set_url(git_submodule *submodule, const char *url)
{
assert(submodule && url);
git__free(submodule->url);
submodule->url = git__strdup(url);
GITERR_CHECK_ALLOC(submodule->url);
return 0;
}
const git_oid *git_submodule_index_id(git_submodule *submodule)
{
assert(submodule);
if (submodule->flags & GIT_SUBMODULE_STATUS__INDEX_OID_VALID)
return &submodule->index_oid;
else
return NULL;
}
const git_oid *git_submodule_head_id(git_submodule *submodule)
{
assert(submodule);
if (submodule->flags & GIT_SUBMODULE_STATUS__HEAD_OID_VALID)
return &submodule->head_oid;
else
return NULL;
}
const git_oid *git_submodule_wd_id(git_submodule *submodule)
{
assert(submodule);
/* load unless we think we have a valid oid */
if (!(submodule->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID)) {
git_repository *subrepo;
/* calling submodule open grabs the HEAD OID if possible */
if (!git_submodule_open_bare(&subrepo, submodule))
git_repository_free(subrepo);
else
giterr_clear();
}
if (submodule->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID)
return &submodule->wd_oid;
else
return NULL;
}
git_submodule_ignore_t git_submodule_ignore(git_submodule *submodule)
{
assert(submodule);
return (submodule->ignore < GIT_SUBMODULE_IGNORE_NONE) ?
GIT_SUBMODULE_IGNORE_NONE : submodule->ignore;
}
git_submodule_ignore_t git_submodule_set_ignore(
git_submodule *submodule, git_submodule_ignore_t ignore)
{
git_submodule_ignore_t old;
assert(submodule);
if (ignore == GIT_SUBMODULE_IGNORE_RESET)
ignore = submodule->ignore_default;
old = submodule->ignore;
submodule->ignore = ignore;
return old;
}
git_submodule_update_t git_submodule_update(git_submodule *submodule)
{
assert(submodule);
return (submodule->update < GIT_SUBMODULE_UPDATE_CHECKOUT) ?
GIT_SUBMODULE_UPDATE_CHECKOUT : submodule->update;
}
git_submodule_update_t git_submodule_set_update(
git_submodule *submodule, git_submodule_update_t update)
{
git_submodule_update_t old;
assert(submodule);
if (update == GIT_SUBMODULE_UPDATE_RESET)
update = submodule->update_default;
old = submodule->update;
submodule->update = update;
return old;
}
git_submodule_recurse_t git_submodule_fetch_recurse_submodules(
git_submodule *submodule)
{
assert(submodule);
return submodule->fetch_recurse;
}
git_submodule_recurse_t git_submodule_set_fetch_recurse_submodules(
git_submodule *submodule,
git_submodule_recurse_t fetch_recurse_submodules)
{
git_submodule_recurse_t old;
assert(submodule);
if (fetch_recurse_submodules == GIT_SUBMODULE_RECURSE_RESET)
fetch_recurse_submodules = submodule->fetch_recurse_default;
old = submodule->fetch_recurse;
submodule->fetch_recurse = fetch_recurse_submodules;
return old;
}
int git_submodule_init(git_submodule *sm, int overwrite)
{
int error;
const char *val;
git_buf key = GIT_BUF_INIT;
git_config *cfg = NULL;
if (!sm->url) {
giterr_set(GITERR_SUBMODULE,
"No URL configured for submodule '%s'", sm->name);
return -1;
}
if ((error = git_repository_config(&cfg, sm->repo)) < 0)
return error;
/* write "submodule.NAME.url" */
if ((error = git_buf_printf(&key, "submodule.%s.url", sm->name)) < 0 ||
(error = git_config__update_entry(
cfg, key.ptr, sm->url, overwrite != 0, false)) < 0)
goto cleanup;
/* write "submodule.NAME.update" if not default */
val = (sm->update == GIT_SUBMODULE_UPDATE_CHECKOUT) ?
NULL : git_submodule_update_to_str(sm->update);
if ((error = git_buf_printf(&key, "submodule.%s.update", sm->name)) < 0 ||
(error = git_config__update_entry(
cfg, key.ptr, val, overwrite != 0, false)) < 0)
goto cleanup;
/* success */
cleanup:
git_config_free(cfg);
git_buf_free(&key);
return error;
}
int git_submodule_sync(git_submodule *sm)
{
int error = 0;
git_config *cfg = NULL;
git_buf key = GIT_BUF_INIT;
git_repository *smrepo = NULL;
if (!sm->url) {
giterr_set(GITERR_SUBMODULE,
"No URL configured for submodule '%s'", sm->name);
return -1;
}
/* copy URL over to config only if it already exists */
if (!(error = git_repository_config__weakptr(&cfg, sm->repo)) &&
!(error = git_buf_printf(&key, "submodule.%s.url", sm->name)))
error = git_config__update_entry(cfg, key.ptr, sm->url, true, true);
/* if submodule exists in the working directory, update remote url */
if (!error &&
(sm->flags & GIT_SUBMODULE_STATUS_IN_WD) != 0 &&
!(error = git_submodule_open(&smrepo, sm)))
{
git_buf remote_name = GIT_BUF_INIT;
if ((error = git_repository_config__weakptr(&cfg, smrepo)) < 0)
/* return error from reading submodule config */;
else if ((error = lookup_head_remote_key(&remote_name, smrepo)) < 0) {
giterr_clear();
error = git_buf_sets(&key, "branch.origin.remote");
} else {
error = git_buf_join3(
&key, '.', "branch", remote_name.ptr, "remote");
git_buf_free(&remote_name);
}
if (!error)
error = git_config__update_entry(cfg, key.ptr, sm->url, true, false);
git_repository_free(smrepo);
}
git_buf_free(&key);
return error;
}
static int git_submodule__open(
git_repository **subrepo, git_submodule *sm, bool bare)
{
int error;
git_buf path = GIT_BUF_INIT;
unsigned int flags = GIT_REPOSITORY_OPEN_NO_SEARCH;
const char *wd;
assert(sm && subrepo);
if (git_repository__ensure_not_bare(
sm->repo, "open submodule repository") < 0)
return GIT_EBAREREPO;
wd = git_repository_workdir(sm->repo);
if (git_buf_joinpath(&path, wd, sm->path) < 0 ||
git_buf_joinpath(&path, path.ptr, DOT_GIT) < 0)
return -1;
sm->flags = sm->flags &
~(GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_OID_VALID |
GIT_SUBMODULE_STATUS__WD_SCANNED);
if (bare)
flags |= GIT_REPOSITORY_OPEN_BARE;
error = git_repository_open_ext(subrepo, path.ptr, flags, wd);
/* if we opened the submodule successfully, grab HEAD OID, etc. */
if (!error) {
sm->flags |= GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_SCANNED;
if (!git_reference_name_to_id(&sm->wd_oid, *subrepo, GIT_HEAD_FILE))
sm->flags |= GIT_SUBMODULE_STATUS__WD_OID_VALID;
else
giterr_clear();
} else if (git_path_exists(path.ptr)) {
sm->flags |= GIT_SUBMODULE_STATUS__WD_SCANNED |
GIT_SUBMODULE_STATUS_IN_WD;
} else {
git_buf_rtruncate_at_char(&path, '/'); /* remove "/.git" */
if (git_path_isdir(path.ptr))
sm->flags |= GIT_SUBMODULE_STATUS__WD_SCANNED;
}
git_buf_free(&path);
return error;
}
int git_submodule_open_bare(git_repository **subrepo, git_submodule *sm)
{
return git_submodule__open(subrepo, sm, true);
}
int git_submodule_open(git_repository **subrepo, git_submodule *sm)
{
return git_submodule__open(subrepo, sm, false);
}
int git_submodule_reload_all(git_repository *repo, int force)
{
return submodule_cache_init(repo, force ? CACHE_FLUSH : CACHE_REFRESH);
}
static void submodule_update_from_index_entry(
git_submodule *sm, const git_index_entry *ie)
{
bool already_found = (sm->flags & GIT_SUBMODULE_STATUS_IN_INDEX) != 0;
if (!S_ISGITLINK(ie->mode)) {
if (!already_found)
sm->flags |= GIT_SUBMODULE_STATUS__INDEX_NOT_SUBMODULE;
} else {
if (already_found)
sm->flags |= GIT_SUBMODULE_STATUS__INDEX_MULTIPLE_ENTRIES;
else
git_oid_cpy(&sm->index_oid, &ie->id);
sm->flags |= GIT_SUBMODULE_STATUS_IN_INDEX |
GIT_SUBMODULE_STATUS__INDEX_OID_VALID;
}
}
static int submodule_update_index(git_submodule *sm)
{
git_index *index;
const git_index_entry *ie;
if (git_repository_index__weakptr(&index, sm->repo) < 0)
return -1;
sm->flags = sm->flags &
~(GIT_SUBMODULE_STATUS_IN_INDEX |
GIT_SUBMODULE_STATUS__INDEX_OID_VALID);
if (!(ie = git_index_get_bypath(index, sm->path, 0)))
return 0;
submodule_update_from_index_entry(sm, ie);
return 0;
}
static void submodule_update_from_head_data(
git_submodule *sm, mode_t mode, const git_oid *id)
{
if (!S_ISGITLINK(mode))
sm->flags |= GIT_SUBMODULE_STATUS__HEAD_NOT_SUBMODULE;
else {
git_oid_cpy(&sm->head_oid, id);
sm->flags |= GIT_SUBMODULE_STATUS_IN_HEAD |
GIT_SUBMODULE_STATUS__HEAD_OID_VALID;
}
}
static int submodule_update_head(git_submodule *submodule)
{