/*
* 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_alloc(git_submodule **out, git_repository *repo, const char *name);
static git_config_backend *open_gitmodules(git_repository *repo, int gitmod);
static git_config *gitmodules_snapshot(git_repository *repo);
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_load_each(const git_config_entry *entry, void *payload);
static int submodule_read_config(git_submodule *sm, git_config *cfg);
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 void submodule_update_from_index_entry(git_submodule *sm, const git_index_entry *ie);
static void submodule_update_from_head_data(git_submodule *sm, mode_t mode, const git_oid *id);
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);
}
/*
* PUBLIC APIS
*/
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);
}
typedef struct {
const char *path;
char *name;
} fbp_data;
static int find_by_path(const git_config_entry *entry, void *payload)
{
fbp_data *data = payload;
if (!strcmp(entry->value, data->path)) {
const char *fdot, *ldot;
fdot = strchr(entry->name, '.');
ldot = strrchr(entry->name, '.');
data->name = git__strndup(fdot + 1, ldot - fdot - 1);
GITERR_CHECK_ALLOC(data->name);
}
return 0;
}
/**
* Find out the name of a submodule from its path
*/
static int name_from_path(git_buf *out, git_config *cfg, const char *path)
{
const char *key = "submodule\\..*\\.path";
git_config_iterator *iter;
git_config_entry *entry;
int error;
if ((error = git_config_iterator_glob_new(&iter, cfg, key)) < 0)
return error;
while ((error = git_config_next(&entry, iter)) == 0) {
const char *fdot, *ldot;
/* TODO: this should maybe be strcasecmp on a case-insensitive fs */
if (strcmp(path, entry->value) != 0)
continue;
fdot = strchr(entry->name, '.');
ldot = strrchr(entry->name, '.');
git_buf_clear(out);
git_buf_put(out, fdot + 1, ldot - fdot - 1);
goto cleanup;
}
if (error == GIT_ITEROVER) {
giterr_set(GITERR_SUBMODULE, "could not find a submodule name for '%s'", path);
error = GIT_ENOTFOUND;
}
cleanup:
git_config_iterator_free(iter);
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;
unsigned int location;
git_submodule *sm;
assert(repo && name);
if ((error = submodule_alloc(&sm, repo, name)) < 0)
return error;
if ((error = git_submodule_reload(sm, false)) < 0) {
git_submodule_free(sm);
return error;
}
if ((error = git_submodule_location(&location, sm)) < 0) {
git_submodule_free(sm);
return error;
}
/* If it's not configured or we're looking by path */
if (location == 0 || location == GIT_SUBMODULE_STATUS_IN_WD) {
git_config_backend *mods;
const char *pattern = "submodule\\..*\\.path";
git_buf path = GIT_BUF_INIT;
fbp_data data = { NULL, NULL };
git_buf_puts(&path, name);
while (path.ptr[path.size-1] == '/') {
path.ptr[--path.size] = '\0';
}
data.path = path.ptr;
mods = open_gitmodules(repo, GITMODULES_EXISTING);
if (mods)
error = git_config_file_foreach_match(mods, pattern, find_by_path, &data);
git_config_file_free(mods);
if (error < 0) {
git_submodule_free(sm);
git_buf_free(&path);
return error;
}
if (data.name) {
git__free(sm->name);
sm->name = data.name;
sm->path = git_buf_detach(&path);
/* Try to load again with the right name */
if ((error = git_submodule_reload(sm, false)) < 0) {
git_submodule_free(sm);
return error;
}
}
git_buf_free(&path);
}
if ((error = git_submodule_location(&location, sm)) < 0) {
git_submodule_free(sm);
return error;
}
/* If we still haven't found it, do the WD check */
if (location == 0 || location == GIT_SUBMODULE_STATUS_IN_WD) {
git_submodule_free(sm);
error = GIT_ENOTFOUND;
/* If it's not configured, we still check if there's a repo at the 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;
}
if (out)
*out = sm;
else
git_submodule_free(sm);
return 0;
}
static void submodule_free_dup(void *sm)
{
git_submodule_free(sm);
}
static int submodule_get_or_create(git_submodule **out, git_repository *repo, git_strmap *map, const char *name)
{
int error = 0;
khiter_t pos;
git_submodule *sm = NULL;
pos = git_strmap_lookup_index(map, name);
if (git_strmap_valid_index(map, pos)) {
sm = git_strmap_value_at(map, pos);
goto done;
}
/* if the submodule doesn't exist yet in the map, create it */
if ((error = submodule_alloc(&sm, repo, name)) < 0)
return error;
pos = kh_put(str, map, sm->name, &error);
/* nobody can beat us to adding it */
assert(error != 0);
if (error < 0) {
git_submodule_free(sm);
return error;
}
git_strmap_set_value_at(map, pos, sm);
done:
GIT_REFCOUNT_INC(sm);
*out = sm;
return 0;
}
static int submodules_from_index(git_strmap *map, git_index *idx, git_config *cfg)
{
int error;
git_iterator *i;
const git_index_entry *entry;
git_buf name = GIT_BUF_INIT;
if ((error = git_iterator_for_index(&i, git_index_owner(idx), idx, NULL)) < 0)
return error;
while (!(error = git_iterator_advance(&entry, i))) {
khiter_t pos = git_strmap_lookup_index(map, entry->path);
git_submodule *sm;
git_buf_clear(&name);
if (!name_from_path(&name, cfg, entry->path)) {
git_strmap_lookup_index(map, name.ptr);
}
if (git_strmap_valid_index(map, pos)) {
sm = git_strmap_value_at(map, pos);
if (S_ISGITLINK(entry->mode))
submodule_update_from_index_entry(sm, entry);
else
sm->flags |= GIT_SUBMODULE_STATUS__INDEX_NOT_SUBMODULE;
} else if (S_ISGITLINK(entry->mode)) {
if (!submodule_get_or_create(&sm, git_index_owner(idx), map, name.ptr ? name.ptr : entry->path)) {
submodule_update_from_index_entry(sm, entry);
git_submodule_free(sm);
}
}
}
if (error == GIT_ITEROVER)
error = 0;
git_buf_free(&name);
git_iterator_free(i);
return error;
}
static int submodules_from_head(git_strmap *map, git_tree *head, git_config *cfg)
{
int error;
git_iterator *i;
const git_index_entry *entry;
git_buf name = GIT_BUF_INIT;
if ((error = git_iterator_for_tree(&i, head, NULL)) < 0)
return error;
while (!(error = git_iterator_advance(&entry, i))) {
khiter_t pos = git_strmap_lookup_index(map, entry->path);
git_submodule *sm;
git_buf_clear(&name);
if (!name_from_path(&name, cfg, entry->path)) {
git_strmap_lookup_index(map, name.ptr);
}
if (git_strmap_valid_index(map, pos)) {
sm = git_strmap_value_at(map, pos);
if (S_ISGITLINK(entry->mode))
submodule_update_from_head_data(sm, entry->mode, &entry->id);
else
sm->flags |= GIT_SUBMODULE_STATUS__HEAD_NOT_SUBMODULE;
} else if (S_ISGITLINK(entry->mode)) {
if (!submodule_get_or_create(&sm, git_tree_owner(head), map, name.ptr ? name.ptr : entry->path)) {
submodule_update_from_head_data(
sm, entry->mode, &entry->id);
git_submodule_free(sm);
}
}
}
if (error == GIT_ITEROVER)
error = 0;
git_buf_free(&name);
git_iterator_free(i);
return error;
}
/* If have_sm is true, sm is populated, otherwise map an repo are. */
typedef struct {
git_config *mods;
git_strmap *map;
git_repository *repo;
} lfc_data;
static int all_submodules(git_repository *repo, git_strmap *map)
{
int error = 0;
git_index *idx = NULL;
git_tree *head = NULL;
const char *wd = NULL;
git_buf path = GIT_BUF_INIT;
git_submodule *sm;
git_config *mods = NULL;
uint32_t mask;
assert(repo && map);
/* get sources that we will need to check */
if (git_repository_index(&idx, repo) < 0)
giterr_clear();
if (git_repository_head_tree(&head, repo) < 0)
giterr_clear();
wd = git_repository_workdir(repo);
if (wd && (error = git_buf_joinpath(&path, wd, GIT_MODULES_FILE)) < 0)
goto cleanup;
/* clear submodule flags that are to be refreshed */
mask = 0;
mask |= GIT_SUBMODULE_STATUS_IN_INDEX |
GIT_SUBMODULE_STATUS__INDEX_FLAGS |
GIT_SUBMODULE_STATUS__INDEX_OID_VALID |
GIT_SUBMODULE_STATUS__INDEX_MULTIPLE_ENTRIES;
mask |= GIT_SUBMODULE_STATUS_IN_HEAD |
GIT_SUBMODULE_STATUS__HEAD_OID_VALID;
mask |= GIT_SUBMODULE_STATUS_IN_CONFIG;
if (mask != 0)
mask |= GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_SCANNED |
GIT_SUBMODULE_STATUS__WD_FLAGS |
GIT_SUBMODULE_STATUS__WD_OID_VALID;
/* add submodule information from .gitmodules */
if (wd) {
lfc_data data = { 0 };
data.map = map;
data.repo = repo;
if ((mods = gitmodules_snapshot(repo)) == NULL)
goto cleanup;
data.mods = mods;
if ((error = git_config_foreach(
mods, submodule_load_each, &data)) < 0)
goto cleanup;
}
/* add back submodule information from index */
if (idx) {
if ((error = submodules_from_index(map, idx, mods)) < 0)
goto cleanup;
}
/* add submodule information from HEAD */
if (head) {
if ((error = submodules_from_head(map, head, mods)) < 0)
goto cleanup;
}
/* shallow scan submodules in work tree as needed */
if (wd && mask != 0) {
git_strmap_foreach_value(map, sm, {
submodule_load_from_wd_lite(sm);
});
}
cleanup:
git_config_free(mods);
/* TODO: if we got an error, mark submodule config as invalid? */
git_index_free(idx);
git_tree_free(head);
git_buf_free(&path);
return error;
}
int git_submodule_foreach(
git_repository *repo,
git_submodule_cb callback,
void *payload)
{
git_vector snapshot = GIT_VECTOR_INIT;
git_strmap *submodules;
git_submodule *sm;
int error;
size_t i;
if ((error = git_strmap_alloc(&submodules)) < 0)
return error;
if ((error = all_submodules(repo, submodules)) < 0)
goto done;
if (!(error = git_vector_init(
&snapshot, kh_size(submodules), submodule_cmp))) {
git_strmap_foreach_value(submodules, sm, {
if ((error = git_vector_insert(&snapshot, sm)) < 0)
break;
GIT_REFCOUNT_INC(sm);
});
}
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);
git_strmap_foreach_value(submodules, sm, {
git_submodule_free(sm);
});
git_strmap_free(submodules);
return error;
}
static int submodule_repo_init(
git_repository **out,
git_repository *parent_repo,
const char *path,
const char *url,
bool use_gitlink)
{
int error = 0;
git_buf workdir = GIT_BUF_INIT, repodir = GIT_BUF_INIT;
git_repository_init_options initopt = GIT_REPOSITORY_INIT_OPTIONS_INIT;
git_repository *subrepo = NULL;
error = git_buf_joinpath(&workdir, git_repository_workdir(parent_repo), path);
if (error < 0)
goto cleanup;
initopt.flags = GIT_REPOSITORY_INIT_MKPATH | GIT_REPOSITORY_INIT_NO_REINIT;
initopt.origin_url = url;
/* init submodule repository and add origin remote as needed */
/* 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/
*/
if (use_gitlink) {
error = git_buf_join3(
&repodir, '/', git_repository_path(parent_repo), "modules", path);
if (error < 0)
goto cleanup;
initopt.workdir_path = workdir.ptr;
initopt.flags |=
GIT_REPOSITORY_INIT_NO_DOTGIT_DIR |
GIT_REPOSITORY_INIT_RELATIVE_GITLINK;
error = git_repository_init_ext(&subrepo, repodir.ptr, &initopt);
} else
error = git_repository_init_ext(&subrepo, workdir.ptr, &initopt);
cleanup:
git_buf_free(&workdir);
git_buf_free(&repodir);
*out = subrepo;
return error;
}
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 *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;
}
/* 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, 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, url)) < 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;
/* if the repo does not already exist, then init a new repo and add it.
* Otherwise, just add the existing repo.
*/
if (!(git_path_exists(name.ptr) &&
git_path_contains(&name, DOT_GIT))) {
/* resolve the actual URL to use */
if ((error = git_submodule_resolve_url(&real_url, repo, url)) < 0)
goto cleanup;
if ((error = submodule_repo_init(&subrepo, repo, path, real_url.ptr, use_gitlink)) < 0)
goto cleanup;
}
if ((error = git_submodule_lookup(&sm, repo, path)) < 0)
goto cleanup;
error = git_submodule_init(sm, false);
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_repo_init(
git_repository **out,
const git_submodule *sm,
int use_gitlink)
{
int error;
git_repository *sub_repo = NULL;
const char *configured_url;
git_config *cfg = NULL;
git_buf buf = GIT_BUF_INIT;
assert(out && sm);
/* get the configured remote url of the submodule */
if ((error = git_buf_printf(&buf, "submodule.%s.url", sm->name)) < 0 ||
(error = git_repository_config_snapshot(&cfg, sm->repo)) < 0 ||
(error = git_config_get_string(&configured_url, cfg, buf.ptr)) < 0 ||
(error = submodule_repo_init(&sub_repo, sm->repo, sm->path, configured_url, use_gitlink)) < 0)
goto done;
*out = sub_repo;
done:
git_config_free(cfg);
git_buf_free(&buf);
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_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 == (int)update)
return _sm_update_map[i].str_match;
return NULL;
}
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;
git_buf normalized = GIT_BUF_INIT;
assert(out && repo && url);
git_buf_sanitize(out);
/* We do this in all platforms in case someone on Windows created the .gitmodules */
if (strchr(url, '\\')) {
if ((error = git_path_normalize_slashes(&normalized, url)) < 0)
return error;
url = normalized.ptr;
}
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;
}
git_buf_free(&normalized);
return error;
}
static int write_var(git_repository *repo, const char *name, const char *var, const char *val)
{
git_buf key = GIT_BUF_INIT;
git_config_backend *mods;
int error;
mods = open_gitmodules(repo, GITMODULES_CREATE);
if (!mods)
return -1;
if ((error = git_buf_printf(&key, "submodule.%s.%s", name, var)) < 0)
goto cleanup;
if (val)
error = git_config_file_set_string(mods, key.ptr, val);
else
error = git_config_file_delete(mods, key.ptr);
git_buf_free(&key);
cleanup:
git_config_file_free(mods);
return error;
}
static int write_mapped_var(git_repository *repo, const char *name, git_cvar_map *maps, size_t nmaps, const char *var, int ival)
{
git_cvar_t type;
const char *val;
if (git_config_lookup_map_enum(&type, &val, maps, nmaps, ival) < 0) {
giterr_set(GITERR_SUBMODULE, "invalid value for %s", var);
return -1;
}
if (type == GIT_CVAR_TRUE)
val = "true";
return write_var(repo, name, var, val);
}
const char *git_submodule_branch(git_submodule *submodule)
{
assert(submodule);
return submodule->branch;
}
int git_submodule_set_branch(git_repository *repo, const char *name, const char *branch)
{
assert(repo && name);
return write_var(repo, name, "branch", branch);
}
int git_submodule_set_url(git_repository *repo, const char *name, const char *url)
{
assert(repo && name && url);
return write_var(repo, name, "url", url);
}
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;
}
int git_submodule_set_ignore(git_repository *repo, const char *name, git_submodule_ignore_t ignore)
{
assert(repo && name);
return write_mapped_var(repo, name, _sm_ignore_map, ARRAY_SIZE(_sm_ignore_map), "ignore", ignore);
}
git_submodule_update_t git_submodule_update_strategy(git_submodule *submodule)
{
assert(submodule);
return (submodule->update < GIT_SUBMODULE_UPDATE_CHECKOUT) ?
GIT_SUBMODULE_UPDATE_CHECKOUT : submodule->update;
}
int git_submodule_set_update(git_repository *repo, const char *name, git_submodule_update_t update)
{
assert(repo && name);
return write_mapped_var(repo, name, _sm_update_map, ARRAY_SIZE(_sm_update_map), "update", update);
}
git_submodule_recurse_t git_submodule_fetch_recurse_submodules(
git_submodule *submodule)
{
assert(submodule);
return submodule->fetch_recurse;
}
int git_submodule_set_fetch_recurse_submodules(git_repository *repo, const char *name, git_submodule_recurse_t recurse)
{
assert(repo && name);
return write_mapped_var(repo, name, _sm_recurse_map, ARRAY_SIZE(_sm_recurse_map), "fetchRecurseSubmodules", recurse);
}
static int submodule_repo_create(
git_repository **out,
git_repository *parent_repo,
const char *path)
{
int error = 0;
git_buf workdir = GIT_BUF_INIT, repodir = GIT_BUF_INIT;
git_repository_init_options initopt = GIT_REPOSITORY_INIT_OPTIONS_INIT;
git_repository *subrepo = NULL;
initopt.flags =
GIT_REPOSITORY_INIT_MKPATH |
GIT_REPOSITORY_INIT_NO_REINIT |
GIT_REPOSITORY_INIT_NO_DOTGIT_DIR |
GIT_REPOSITORY_INIT_RELATIVE_GITLINK;
/* Workdir: path to sub-repo working directory */
error = git_buf_joinpath(&workdir, git_repository_workdir(parent_repo), path);
if (error < 0)
goto cleanup;
initopt.workdir_path = workdir.ptr;
/**
* Repodir: path to the sub-repo. sub-repo goes in:
* <repo-dir>/modules/<name>/ with a gitlink in the
* sub-repo workdir directory to that repository.
*/
error = git_buf_join3(
&repodir, '/', git_repository_path(parent_repo), "modules", path);
if (error < 0)
goto cleanup;
error = git_repository_init_ext(&subrepo, repodir.ptr, &initopt);
cleanup:
git_buf_free(&workdir);
git_buf_free(&repodir);
*out = subrepo;
return error;
}
/**
* Callback to override sub-repository creation when
* cloning a sub-repository.
*/
static int git_submodule_update_repo_init_cb(
git_repository **out,
const char *path,
int bare,
void *payload)
{
git_submodule *sm;
GIT_UNUSED(bare);
sm = payload;
return submodule_repo_create(out, sm->repo, path);
}
int git_submodule_update_init_options(git_submodule_update_options *opts, unsigned int version)
{
GIT_INIT_STRUCTURE_FROM_TEMPLATE(
opts, version, git_submodule_update_options, GIT_SUBMODULE_UPDATE_OPTIONS_INIT);
return 0;
}
int git_submodule_update(git_submodule *sm, int init, git_submodule_update_options *_update_options)
{
int error;
unsigned int submodule_status;
git_config *config = NULL;
const char *submodule_url;
git_repository *sub_repo = NULL;
git_remote *remote = NULL;
git_object *target_commit = NULL;
git_buf buf = GIT_BUF_INIT;
git_submodule_update_options update_options = GIT_SUBMODULE_UPDATE_OPTIONS_INIT;
git_clone_options clone_options = GIT_CLONE_OPTIONS_INIT;
assert(sm);
if (_update_options)
memcpy(&update_options, _update_options, sizeof(git_submodule_update_options));
GITERR_CHECK_VERSION(&update_options, GIT_SUBMODULE_UPDATE_OPTIONS_VERSION, "git_submodule_update_options");
/* Copy over the remote callbacks */
memcpy(&clone_options.fetch_opts, &update_options.fetch_opts, sizeof(git_fetch_options));
/* Get the status of the submodule to determine if it is already initialized */
if ((error = git_submodule_status(&submodule_status, sm->repo, sm->name, GIT_SUBMODULE_IGNORE_UNSPECIFIED)) < 0)
goto done;
/*
* If submodule work dir is not already initialized, check to see
* what we need to do (initialize, clone, return error...)
*/
if (submodule_status & GIT_SUBMODULE_STATUS_WD_UNINITIALIZED) {
/*
* Work dir is not initialized, check to see if the submodule
* info has been copied into .git/config
*/
if ((error = git_repository_config_snapshot(&config, sm->repo)) < 0 ||
(error = git_buf_printf(&buf, "submodule.%s.url", git_submodule_name(sm))) < 0)
goto done;
if ((error = git_config_get_string(&submodule_url, config, git_buf_cstr(&buf))) < 0) {
/*
* If the error is not "not found" or if it is "not found" and we are not
* initializing the submodule, then return error.
*/
if (error != GIT_ENOTFOUND)
goto done;
if (error == GIT_ENOTFOUND && !init) {
giterr_set(GITERR_SUBMODULE, "Submodule is not initialized.");
error = GIT_ERROR;
goto done;
}
/* The submodule has not been initialized yet - initialize it now.*/
if ((error = git_submodule_init(sm, 0)) < 0)
goto done;
git_config_free(config);
config = NULL;
if ((error = git_repository_config_snapshot(&config, sm->repo)) < 0 ||
(error = git_config_get_string(&submodule_url, config, git_buf_cstr(&buf))) < 0)
goto done;
}
/** submodule is initialized - now clone it **/
/* override repo creation */
clone_options.repository_cb = git_submodule_update_repo_init_cb;
clone_options.repository_cb_payload = sm;
/*
* Do not perform checkout as part of clone, instead we
* will checkout the specific commit manually.
*/
clone_options.checkout_opts.checkout_strategy = GIT_CHECKOUT_NONE;
update_options.checkout_opts.checkout_strategy = update_options.clone_checkout_strategy;
if ((error = git_clone(&sub_repo, submodule_url, sm->path, &clone_options)) < 0 ||
(error = git_repository_set_head_detached(sub_repo, git_submodule_index_id(sm))) < 0 ||
(error = git_checkout_head(sub_repo, &update_options.checkout_opts)) != 0)
goto done;
} else {
/**
* Work dir is initialized - look up the commit in the parent repository's index,
* update the workdir contents of the subrepository, and set the subrepository's
* head to the new commit.
*/
if ((error = git_submodule_open(&sub_repo, sm)) < 0 ||
(error = git_object_lookup(&target_commit, sub_repo, git_submodule_index_id(sm), GIT_OBJ_COMMIT)) < 0 ||
(error = git_checkout_tree(sub_repo, target_commit, &update_options.checkout_opts)) != 0 ||
(error = git_repository_set_head_detached(sub_repo, git_submodule_index_id(sm))) < 0)
goto done;
/* Invalidate the wd flags as the workdir has been updated. */
sm->flags = sm->flags &
~(GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_OID_VALID |
GIT_SUBMODULE_STATUS__WD_SCANNED);
}
done:
git_buf_free(&buf);
git_config_free(config);
git_object_free(target_commit);
git_remote_free(remote);
git_repository_free(sub_repo);
return error;
}
int git_submodule_init(git_submodule *sm, int overwrite)
{
int error;
const char *val;
git_buf key = GIT_BUF_INIT, effective_submodule_url = 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_submodule_resolve_url(&effective_submodule_url, sm->repo, sm->url)) < 0 ||
(error = git_buf_printf(&key, "submodule.%s.url", sm->name)) < 0 ||
(error = git_config__update_entry(
cfg, key.ptr, effective_submodule_url.ptr, 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);
git_buf_free(&effective_submodule_url);
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, "remote.origin.url");
} else {
error = git_buf_join3(
&key, '.', "remote", remote_name.ptr, "url");
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);
}
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)
{
git_tree *head = NULL;
git_tree_entry *te = NULL;
submodule->flags = submodule->flags &
~(GIT_SUBMODULE_STATUS_IN_HEAD |
GIT_SUBMODULE_STATUS__HEAD_OID_VALID);
/* if we can't look up file in current head, then done */
if (git_repository_head_tree(&head, submodule->repo) < 0 ||
git_tree_entry_bypath(&te, head, submodule->path) < 0)
giterr_clear();
else
submodule_update_from_head_data(submodule, te->attr, &te->oid);
git_tree_entry_free(te);
git_tree_free(head);
return 0;
}
int git_submodule_reload(git_submodule *sm, int force)
{
int error = 0;
git_config *mods;
GIT_UNUSED(force);
assert(sm);
if (!git_repository_is_bare(sm->repo)) {
/* refresh config data */
mods = gitmodules_snapshot(sm->repo);
if (mods != NULL) {
error = submodule_read_config(sm, mods);
git_config_free(mods);
if (error < 0)
return error;
}
/* refresh wd data */
sm->flags &=
~(GIT_SUBMODULE_STATUS_IN_WD |
GIT_SUBMODULE_STATUS__WD_OID_VALID |
GIT_SUBMODULE_STATUS__WD_FLAGS);
error = submodule_load_from_wd_lite(sm);
}
if (error == 0 && (error = submodule_update_index(sm)) == 0)
error = submodule_update_head(sm);
return error;
}
static void submodule_copy_oid_maybe(
git_oid *tgt, const git_oid *src, bool valid)
{
if (tgt) {
if (valid)
memcpy(tgt, src, sizeof(*tgt));
else
memset(tgt, 0, sizeof(*tgt));
}
}
int git_submodule__status(
unsigned int *out_status,
git_oid *out_head_id,
git_oid *out_index_id,
git_oid *out_wd_id,
git_submodule *sm,
git_submodule_ignore_t ign)
{
unsigned int status;
git_repository *smrepo = NULL;
if (ign == GIT_SUBMODULE_IGNORE_UNSPECIFIED)
ign = sm->ignore;
/* only return location info if ignore == all */
if (ign == GIT_SUBMODULE_IGNORE_ALL) {
*out_status = (sm->flags & GIT_SUBMODULE_STATUS__IN_FLAGS);
return 0;
}
/* refresh the index OID */
if (submodule_update_index(sm) < 0)
return -1;
/* refresh the HEAD OID */
if (submodule_update_head(sm) < 0)
return -1;
/* for ignore == dirty, don't scan the working directory */
if (ign == GIT_SUBMODULE_IGNORE_DIRTY) {
/* git_submodule_open_bare will load WD OID data */
if (git_submodule_open_bare(&smrepo, sm) < 0)
giterr_clear();
else
git_repository_free(smrepo);
smrepo = NULL;
} else if (git_submodule_open(&smrepo, sm) < 0) {
giterr_clear();
smrepo = NULL;
}
status = GIT_SUBMODULE_STATUS__CLEAR_INTERNAL(sm->flags);
submodule_get_index_status(&status, sm);
submodule_get_wd_status(&status, sm, smrepo, ign);
git_repository_free(smrepo);
*out_status = status;
submodule_copy_oid_maybe(out_head_id, &sm->head_oid,
(sm->flags & GIT_SUBMODULE_STATUS__HEAD_OID_VALID) != 0);
submodule_copy_oid_maybe(out_index_id, &sm->index_oid,
(sm->flags & GIT_SUBMODULE_STATUS__INDEX_OID_VALID) != 0);
submodule_copy_oid_maybe(out_wd_id, &sm->wd_oid,
(sm->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID) != 0);
return 0;
}
int git_submodule_status(unsigned int *status, git_repository *repo, const char *name, git_submodule_ignore_t ignore)
{
git_submodule *sm;
int error;
assert(status && repo && name);
if ((error = git_submodule_lookup(&sm, repo, name)) < 0)
return error;
error = git_submodule__status(status, NULL, NULL, NULL, sm, ignore);
git_submodule_free(sm);
return error;
}
int git_submodule_location(unsigned int *location, git_submodule *sm)
{
assert(location && sm);
return git_submodule__status(
location, NULL, NULL, NULL, sm, GIT_SUBMODULE_IGNORE_ALL);
}
/*
* INTERNAL FUNCTIONS
*/
static int submodule_alloc(
git_submodule **out, git_repository *repo, const char *name)
{
size_t namelen;
git_submodule *sm;
if (!name || !(namelen = strlen(name))) {
giterr_set(GITERR_SUBMODULE, "Invalid submodule name");
return -1;
}
sm = git__calloc(1, sizeof(git_submodule));
GITERR_CHECK_ALLOC(sm);
sm->name = sm->path = git__strdup(name);
if (!sm->name) {
git__free(sm);
return -1;
}
GIT_REFCOUNT_INC(sm);
sm->ignore = sm->ignore_default = GIT_SUBMODULE_IGNORE_NONE;
sm->update = sm->update_default = GIT_SUBMODULE_UPDATE_CHECKOUT;
sm->fetch_recurse = sm->fetch_recurse_default = GIT_SUBMODULE_RECURSE_NO;
sm->repo = repo;
sm->branch = NULL;
*out = sm;
return 0;
}
static void submodule_release(git_submodule *sm)
{
if (!sm)
return;
if (sm->repo) {
sm->repo = NULL;
}
if (sm->path != sm->name)
git__free(sm->path);
git__free(sm->name);
git__free(sm->url);
git__free(sm->branch);
git__memzero(sm, sizeof(*sm));
git__free(sm);
}
void git_submodule_free(git_submodule *sm)
{
if (!sm)
return;
GIT_REFCOUNT_DEC(sm, submodule_release);
}
static int submodule_config_error(const char *property, const char *value)
{
giterr_set(GITERR_INVALID,
"Invalid value for submodule '%s' property: '%s'", property, value);
return -1;
}
int git_submodule_parse_ignore(git_submodule_ignore_t *out, const char *value)
{
int val;
if (git_config_lookup_map_value(
&val, _sm_ignore_map, ARRAY_SIZE(_sm_ignore_map), value) < 0) {
*out = GIT_SUBMODULE_IGNORE_NONE;
return submodule_config_error("ignore", value);
}
*out = (git_submodule_ignore_t)val;
return 0;
}
int git_submodule_parse_update(git_submodule_update_t *out, const char *value)
{
int val;
if (git_config_lookup_map_value(
&val, _sm_update_map, ARRAY_SIZE(_sm_update_map), value) < 0) {
*out = GIT_SUBMODULE_UPDATE_CHECKOUT;
return submodule_config_error("update", value);
}
*out = (git_submodule_update_t)val;
return 0;
}
int git_submodule_parse_recurse(git_submodule_recurse_t *out, const char *value)
{
int val;
if (git_config_lookup_map_value(
&val, _sm_recurse_map, ARRAY_SIZE(_sm_recurse_map), value) < 0) {
*out = GIT_SUBMODULE_RECURSE_YES;
return submodule_config_error("recurse", value);
}
*out = (git_submodule_recurse_t)val;
return 0;
}
static int get_value(const char **out, git_config *cfg, git_buf *buf, const char *name, const char *field)
{
int error;
git_buf_clear(buf);
if ((error = git_buf_printf(buf, "submodule.%s.%s", name, field)) < 0 ||
(error = git_config_get_string(out, cfg, buf->ptr)) < 0)
return error;
return error;
}
static int submodule_read_config(git_submodule *sm, git_config *cfg)
{
git_buf key = GIT_BUF_INIT;
const char *value;
int error, in_config = 0;
/*
* TODO: Look up path in index and if it is present but not a GITLINK
* then this should be deleted (at least to match git's behavior)
*/
if ((error = get_value(&value, cfg, &key, sm->name, "path")) == 0) {
in_config = 1;
/*
* TODO: if case insensitive filesystem, then the following strcmp
* should be strcasecmp
*/
if (strcmp(sm->name, value) != 0) {
if (sm->path != sm->name)
git__free(sm->path);
sm->path = git__strdup(value);
GITERR_CHECK_ALLOC(sm->path);
}
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "url")) == 0) {
in_config = 1;
sm->url = git__strdup(value);
GITERR_CHECK_ALLOC(sm->url);
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "branch")) == 0) {
in_config = 1;
sm->branch = git__strdup(value);
GITERR_CHECK_ALLOC(sm->branch);
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "update")) == 0) {
in_config = 1;
if ((error = git_submodule_parse_update(&sm->update, value)) < 0)
goto cleanup;
sm->update_default = sm->update;
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "fetchRecurseSubmodules")) == 0) {
in_config = 1;
if ((error = git_submodule_parse_recurse(&sm->fetch_recurse, value)) < 0)
goto cleanup;
sm->fetch_recurse_default = sm->fetch_recurse;
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if ((error = get_value(&value, cfg, &key, sm->name, "ignore")) == 0) {
in_config = 1;
if ((error = git_submodule_parse_ignore(&sm->ignore, value)) < 0)
goto cleanup;
sm->ignore_default = sm->ignore;
} else if (error != GIT_ENOTFOUND) {
goto cleanup;
}
if (in_config)
sm->flags |= GIT_SUBMODULE_STATUS_IN_CONFIG;
error = 0;
cleanup:
git_buf_free(&key);
return error;
}
static int submodule_load_each(const git_config_entry *entry, void *payload)
{
lfc_data *data = payload;
const char *namestart, *property;
git_strmap_iter pos;
git_strmap *map = data->map;
git_buf name = GIT_BUF_INIT;
git_submodule *sm;
int error;
if (git__prefixcmp(entry->name, "submodule.") != 0)
return 0;
namestart = entry->name + strlen("submodule.");
property = strrchr(namestart, '.');
if (!property || (property == namestart))
return 0;
property++;
if ((error = git_buf_set(&name, namestart, property - namestart -1)) < 0)
return error;
/*
* Now that we have the submodule's name, we can use that to
* figure out whether it's in the map. If it's not, we create
* a new submodule, load the config and insert it. If it's
* already inserted, we've already loaded it, so we skip.
*/
pos = git_strmap_lookup_index(map, name.ptr);
if (git_strmap_valid_index(map, pos)) {
error = 0;
goto done;
}
if ((error = submodule_alloc(&sm, data->repo, name.ptr)) < 0)
goto done;
if ((error = submodule_read_config(sm, data->mods)) < 0) {
git_submodule_free(sm);
goto done;
}
git_strmap_insert(map, sm->name, sm, error);
assert(error != 0);
if (error < 0)
goto done;
error = 0;
done:
git_buf_free(&name);
return error;
}
static int submodule_load_from_wd_lite(git_submodule *sm)
{
git_buf path = GIT_BUF_INIT;
if (git_buf_joinpath(&path, git_repository_workdir(sm->repo), sm->path) < 0)
return -1;
if (git_path_isdir(path.ptr))
sm->flags |= GIT_SUBMODULE_STATUS__WD_SCANNED;
if (git_path_contains(&path, DOT_GIT))
sm->flags |= GIT_SUBMODULE_STATUS_IN_WD;
git_buf_free(&path);
return 0;
}
/**
* Returns a snapshot of $WORK_TREE/.gitmodules.
*
* We ignore any errors and just pretend the file isn't there.
*/
static git_config *gitmodules_snapshot(git_repository *repo)
{
const char *workdir = git_repository_workdir(repo);
git_config *mods = NULL, *snap = NULL;
git_buf path = GIT_BUF_INIT;
if (workdir != NULL) {
if (git_buf_joinpath(&path, workdir, GIT_MODULES_FILE) != 0)
return NULL;
if (git_config_open_ondisk(&mods, path.ptr) < 0)
mods = NULL;
}
git_buf_free(&path);
if (mods) {
git_config_snapshot(&snap, mods);
git_config_free(mods);
}
return snap;
}
static git_config_backend *open_gitmodules(
git_repository *repo,
int okay_to_create)
{
const char *workdir = git_repository_workdir(repo);
git_buf path = GIT_BUF_INIT;
git_config_backend *mods = NULL;
if (workdir != NULL) {
if (git_buf_joinpath(&path, workdir, GIT_MODULES_FILE) != 0)
return NULL;
if (okay_to_create || git_path_isfile(path.ptr)) {
/* git_config_file__ondisk should only fail if OOM */
if (git_config_file__ondisk(&mods, path.ptr) < 0)
mods = NULL;
/* open should only fail here if the file is malformed */
else if (git_config_file_open(mods, GIT_CONFIG_LEVEL_LOCAL) < 0) {
git_config_file_free(mods);
mods = NULL;
}
}
}
git_buf_free(&path);
return mods;
}
/* Lookup name of remote of the local tracking branch HEAD points to */
static int lookup_head_remote_key(git_buf *remote_name, git_repository *repo)
{
int error;
git_reference *head = NULL;
git_buf upstream_name = GIT_BUF_INIT;
/* lookup and dereference HEAD */
if ((error = git_repository_head(&head, repo)) < 0)
return error;
/**
* If head does not refer to a branch, then return
* GIT_ENOTFOUND to indicate that we could not find
* a remote key for the local tracking branch HEAD points to.
**/
if (!git_reference_is_branch(head)) {
giterr_set(GITERR_INVALID,
"HEAD does not refer to a branch.");
error = GIT_ENOTFOUND;
goto done;
}
/* lookup remote tracking branch of HEAD */
if ((error = git_branch_upstream_name(
&upstream_name,
repo,
git_reference_name(head))) < 0)
goto done;
/* lookup remote of remote tracking branch */
if ((error = git_branch_remote_name(remote_name, repo, upstream_name.ptr)) < 0)
goto done;
done:
git_buf_free(&upstream_name);
git_reference_free(head);
return error;
}
/* Lookup the remote of the local tracking branch HEAD points to */
static int lookup_head_remote(git_remote **remote, git_repository *repo)
{
int error;
git_buf remote_name = GIT_BUF_INIT;
/* lookup remote of remote tracking branch name */
if (!(error = lookup_head_remote_key(&remote_name, repo)))
error = git_remote_lookup(remote, repo, remote_name.ptr);
git_buf_free(&remote_name);
return error;
}
/* Lookup remote, either from HEAD or fall back on origin */
static int lookup_default_remote(git_remote **remote, git_repository *repo)
{
int error = lookup_head_remote(remote, repo);
/* if that failed, use 'origin' instead */
if (error == GIT_ENOTFOUND)
error = git_remote_lookup(remote, repo, "origin");
if (error == GIT_ENOTFOUND)
giterr_set(
GITERR_SUBMODULE,
"Cannot get default remote for submodule - no local tracking "
"branch for HEAD and origin does not exist");
return error;
}
static int get_url_base(git_buf *url, git_repository *repo)
{
int error;
git_remote *remote = NULL;
if (!(error = lookup_default_remote(&remote, repo))) {
error = git_buf_sets(url, git_remote_url(remote));
git_remote_free(remote);
}
else if (error == GIT_ENOTFOUND) {
/* if repository does not have a default remote, use workdir instead */
giterr_clear();
error = git_buf_sets(url, git_repository_workdir(repo));
}
return error;
}
static void submodule_get_index_status(unsigned int *status, git_submodule *sm)
{
const git_oid *head_oid = git_submodule_head_id(sm);
const git_oid *index_oid = git_submodule_index_id(sm);
*status = *status & ~GIT_SUBMODULE_STATUS__INDEX_FLAGS;
if (!head_oid) {
if (index_oid)
*status |= GIT_SUBMODULE_STATUS_INDEX_ADDED;
}
else if (!index_oid)
*status |= GIT_SUBMODULE_STATUS_INDEX_DELETED;
else if (!git_oid_equal(head_oid, index_oid))
*status |= GIT_SUBMODULE_STATUS_INDEX_MODIFIED;
}
static void submodule_get_wd_status(
unsigned int *status,
git_submodule *sm,
git_repository *sm_repo,
git_submodule_ignore_t ign)
{
const git_oid *index_oid = git_submodule_index_id(sm);
const git_oid *wd_oid =
(sm->flags & GIT_SUBMODULE_STATUS__WD_OID_VALID) ? &sm->wd_oid : NULL;
git_tree *sm_head = NULL;
git_index *index = NULL;
git_diff_options opt = GIT_DIFF_OPTIONS_INIT;
git_diff *diff;
*status = *status & ~GIT_SUBMODULE_STATUS__WD_FLAGS;
if (!index_oid) {
if (wd_oid)
*status |= GIT_SUBMODULE_STATUS_WD_ADDED;
}
else if (!wd_oid) {
if ((sm->flags & GIT_SUBMODULE_STATUS__WD_SCANNED) != 0 &&
(sm->flags & GIT_SUBMODULE_STATUS_IN_WD) == 0)
*status |= GIT_SUBMODULE_STATUS_WD_UNINITIALIZED;
else
*status |= GIT_SUBMODULE_STATUS_WD_DELETED;
}
else if (!git_oid_equal(index_oid, wd_oid))
*status |= GIT_SUBMODULE_STATUS_WD_MODIFIED;
/* if we have no repo, then we're done */
if (!sm_repo)
return;
/* the diffs below could be optimized with an early termination
* option to the git_diff functions, but for now this is sufficient
* (and certainly no worse that what core git does).
*/
if (ign == GIT_SUBMODULE_IGNORE_NONE)
opt.flags |= GIT_DIFF_INCLUDE_UNTRACKED;
(void)git_repository_index__weakptr(&index, sm_repo);
/* if we don't have an unborn head, check diff with index */
if (git_repository_head_tree(&sm_head, sm_repo) < 0)
giterr_clear();
else {
/* perform head to index diff on submodule */
if (git_diff_tree_to_index(&diff, sm_repo, sm_head, index, &opt) < 0)
giterr_clear();
else {
if (git_diff_num_deltas(diff) > 0)
*status |= GIT_SUBMODULE_STATUS_WD_INDEX_MODIFIED;
git_diff_free(diff);
diff = NULL;
}
git_tree_free(sm_head);
}
/* perform index-to-workdir diff on submodule */
if (git_diff_index_to_workdir(&diff, sm_repo, index, &opt) < 0)
giterr_clear();
else {
size_t untracked =
git_diff_num_deltas_of_type(diff, GIT_DELTA_UNTRACKED);
if (untracked > 0)
*status |= GIT_SUBMODULE_STATUS_WD_UNTRACKED;
if (git_diff_num_deltas(diff) != untracked)
*status |= GIT_SUBMODULE_STATUS_WD_WD_MODIFIED;
git_diff_free(diff);
diff = NULL;
}
}
