mirror of
https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
![Carlos Martín Nieto](/assets/img/avatar_default.png)
If the user gave us refspecs on the command line, we should use those when deciding whether to prune a ref instead of relying on the refspecs in the config. Previously, running git fetch --prune origin refs/heads/master:refs/remotes/origin/master would delete every other ref under the origin namespace because we were using the refspec to filter the available refs but using the configured refspec to figure out if a ref had been deleted on the remote. This is clearly the wrong thing to do. Change prune_refs and get_stale_heads to simply accept a list of references and a list of refspecs. The caller of either function needs to decide what refspecs should be used to decide whether a ref is stale. Signed-off-by: Carlos Martín Nieto <cmn@elego.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1005 lines
27 KiB
C
1005 lines
27 KiB
C
/*
|
|
* "git fetch"
|
|
*/
|
|
#include "cache.h"
|
|
#include "refs.h"
|
|
#include "commit.h"
|
|
#include "builtin.h"
|
|
#include "string-list.h"
|
|
#include "remote.h"
|
|
#include "transport.h"
|
|
#include "run-command.h"
|
|
#include "parse-options.h"
|
|
#include "sigchain.h"
|
|
#include "transport.h"
|
|
#include "submodule.h"
|
|
|
|
static const char * const builtin_fetch_usage[] = {
|
|
"git fetch [<options>] [<repository> [<refspec>...]]",
|
|
"git fetch [<options>] <group>",
|
|
"git fetch --multiple [<options>] [(<repository> | <group>)...]",
|
|
"git fetch --all [<options>]",
|
|
NULL
|
|
};
|
|
|
|
enum {
|
|
TAGS_UNSET = 0,
|
|
TAGS_DEFAULT = 1,
|
|
TAGS_SET = 2
|
|
};
|
|
|
|
static int all, append, dry_run, force, keep, multiple, prune, update_head_ok, verbosity;
|
|
static int progress, recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
|
|
static int tags = TAGS_DEFAULT;
|
|
static const char *depth;
|
|
static const char *upload_pack;
|
|
static struct strbuf default_rla = STRBUF_INIT;
|
|
static struct transport *transport;
|
|
static const char *submodule_prefix = "";
|
|
static const char *recurse_submodules_default;
|
|
|
|
static int option_parse_recurse_submodules(const struct option *opt,
|
|
const char *arg, int unset)
|
|
{
|
|
if (unset) {
|
|
recurse_submodules = RECURSE_SUBMODULES_OFF;
|
|
} else {
|
|
if (arg)
|
|
recurse_submodules = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
|
|
else
|
|
recurse_submodules = RECURSE_SUBMODULES_ON;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct option builtin_fetch_options[] = {
|
|
OPT__VERBOSITY(&verbosity),
|
|
OPT_BOOLEAN(0, "all", &all,
|
|
"fetch from all remotes"),
|
|
OPT_BOOLEAN('a', "append", &append,
|
|
"append to .git/FETCH_HEAD instead of overwriting"),
|
|
OPT_STRING(0, "upload-pack", &upload_pack, "path",
|
|
"path to upload pack on remote end"),
|
|
OPT__FORCE(&force, "force overwrite of local branch"),
|
|
OPT_BOOLEAN('m', "multiple", &multiple,
|
|
"fetch from multiple remotes"),
|
|
OPT_SET_INT('t', "tags", &tags,
|
|
"fetch all tags and associated objects", TAGS_SET),
|
|
OPT_SET_INT('n', NULL, &tags,
|
|
"do not fetch all tags (--no-tags)", TAGS_UNSET),
|
|
OPT_BOOLEAN('p', "prune", &prune,
|
|
"prune remote-tracking branches no longer on remote"),
|
|
{ OPTION_CALLBACK, 0, "recurse-submodules", NULL, "on-demand",
|
|
"control recursive fetching of submodules",
|
|
PARSE_OPT_OPTARG, option_parse_recurse_submodules },
|
|
OPT_BOOLEAN(0, "dry-run", &dry_run,
|
|
"dry run"),
|
|
OPT_BOOLEAN('k', "keep", &keep, "keep downloaded pack"),
|
|
OPT_BOOLEAN('u', "update-head-ok", &update_head_ok,
|
|
"allow updating of HEAD ref"),
|
|
OPT_BOOLEAN(0, "progress", &progress, "force progress reporting"),
|
|
OPT_STRING(0, "depth", &depth, "depth",
|
|
"deepen history of shallow clone"),
|
|
{ OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, "dir",
|
|
"prepend this to submodule path output", PARSE_OPT_HIDDEN },
|
|
{ OPTION_STRING, 0, "recurse-submodules-default",
|
|
&recurse_submodules_default, NULL,
|
|
"default mode for recursion", PARSE_OPT_HIDDEN },
|
|
OPT_END()
|
|
};
|
|
|
|
static void unlock_pack(void)
|
|
{
|
|
if (transport)
|
|
transport_unlock_pack(transport);
|
|
}
|
|
|
|
static void unlock_pack_on_signal(int signo)
|
|
{
|
|
unlock_pack();
|
|
sigchain_pop(signo);
|
|
raise(signo);
|
|
}
|
|
|
|
static void add_merge_config(struct ref **head,
|
|
const struct ref *remote_refs,
|
|
struct branch *branch,
|
|
struct ref ***tail)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < branch->merge_nr; i++) {
|
|
struct ref *rm, **old_tail = *tail;
|
|
struct refspec refspec;
|
|
|
|
for (rm = *head; rm; rm = rm->next) {
|
|
if (branch_merge_matches(branch, i, rm->name)) {
|
|
rm->merge = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (rm)
|
|
continue;
|
|
|
|
/*
|
|
* Not fetched to a remote-tracking branch? We need to fetch
|
|
* it anyway to allow this branch's "branch.$name.merge"
|
|
* to be honored by 'git pull', but we do not have to
|
|
* fail if branch.$name.merge is misconfigured to point
|
|
* at a nonexisting branch. If we were indeed called by
|
|
* 'git pull', it will notice the misconfiguration because
|
|
* there is no entry in the resulting FETCH_HEAD marked
|
|
* for merging.
|
|
*/
|
|
memset(&refspec, 0, sizeof(refspec));
|
|
refspec.src = branch->merge[i]->src;
|
|
get_fetch_map(remote_refs, &refspec, tail, 1);
|
|
for (rm = *old_tail; rm; rm = rm->next)
|
|
rm->merge = 1;
|
|
}
|
|
}
|
|
|
|
static void find_non_local_tags(struct transport *transport,
|
|
struct ref **head,
|
|
struct ref ***tail);
|
|
|
|
static struct ref *get_ref_map(struct transport *transport,
|
|
struct refspec *refs, int ref_count, int tags,
|
|
int *autotags)
|
|
{
|
|
int i;
|
|
struct ref *rm;
|
|
struct ref *ref_map = NULL;
|
|
struct ref **tail = &ref_map;
|
|
|
|
const struct ref *remote_refs = transport_get_remote_refs(transport);
|
|
|
|
if (ref_count || tags == TAGS_SET) {
|
|
for (i = 0; i < ref_count; i++) {
|
|
get_fetch_map(remote_refs, &refs[i], &tail, 0);
|
|
if (refs[i].dst && refs[i].dst[0])
|
|
*autotags = 1;
|
|
}
|
|
/* Merge everything on the command line, but not --tags */
|
|
for (rm = ref_map; rm; rm = rm->next)
|
|
rm->merge = 1;
|
|
if (tags == TAGS_SET)
|
|
get_fetch_map(remote_refs, tag_refspec, &tail, 0);
|
|
} else {
|
|
/* Use the defaults */
|
|
struct remote *remote = transport->remote;
|
|
struct branch *branch = branch_get(NULL);
|
|
int has_merge = branch_has_merge_config(branch);
|
|
if (remote &&
|
|
(remote->fetch_refspec_nr ||
|
|
/* Note: has_merge implies non-NULL branch->remote_name */
|
|
(has_merge && !strcmp(branch->remote_name, remote->name)))) {
|
|
for (i = 0; i < remote->fetch_refspec_nr; i++) {
|
|
get_fetch_map(remote_refs, &remote->fetch[i], &tail, 0);
|
|
if (remote->fetch[i].dst &&
|
|
remote->fetch[i].dst[0])
|
|
*autotags = 1;
|
|
if (!i && !has_merge && ref_map &&
|
|
!remote->fetch[0].pattern)
|
|
ref_map->merge = 1;
|
|
}
|
|
/*
|
|
* if the remote we're fetching from is the same
|
|
* as given in branch.<name>.remote, we add the
|
|
* ref given in branch.<name>.merge, too.
|
|
*
|
|
* Note: has_merge implies non-NULL branch->remote_name
|
|
*/
|
|
if (has_merge &&
|
|
!strcmp(branch->remote_name, remote->name))
|
|
add_merge_config(&ref_map, remote_refs, branch, &tail);
|
|
} else {
|
|
ref_map = get_remote_ref(remote_refs, "HEAD");
|
|
if (!ref_map)
|
|
die(_("Couldn't find remote ref HEAD"));
|
|
ref_map->merge = 1;
|
|
tail = &ref_map->next;
|
|
}
|
|
}
|
|
if (tags == TAGS_DEFAULT && *autotags)
|
|
find_non_local_tags(transport, &ref_map, &tail);
|
|
ref_remove_duplicates(ref_map);
|
|
|
|
return ref_map;
|
|
}
|
|
|
|
#define STORE_REF_ERROR_OTHER 1
|
|
#define STORE_REF_ERROR_DF_CONFLICT 2
|
|
|
|
static int s_update_ref(const char *action,
|
|
struct ref *ref,
|
|
int check_old)
|
|
{
|
|
char msg[1024];
|
|
char *rla = getenv("GIT_REFLOG_ACTION");
|
|
static struct ref_lock *lock;
|
|
|
|
if (dry_run)
|
|
return 0;
|
|
if (!rla)
|
|
rla = default_rla.buf;
|
|
snprintf(msg, sizeof(msg), "%s: %s", rla, action);
|
|
lock = lock_any_ref_for_update(ref->name,
|
|
check_old ? ref->old_sha1 : NULL, 0);
|
|
if (!lock)
|
|
return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
|
|
STORE_REF_ERROR_OTHER;
|
|
if (write_ref_sha1(lock, ref->new_sha1, msg) < 0)
|
|
return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
|
|
STORE_REF_ERROR_OTHER;
|
|
return 0;
|
|
}
|
|
|
|
#define REFCOL_WIDTH 10
|
|
|
|
static int update_local_ref(struct ref *ref,
|
|
const char *remote,
|
|
char *display)
|
|
{
|
|
struct commit *current = NULL, *updated;
|
|
enum object_type type;
|
|
struct branch *current_branch = branch_get(NULL);
|
|
const char *pretty_ref = prettify_refname(ref->name);
|
|
|
|
*display = 0;
|
|
type = sha1_object_info(ref->new_sha1, NULL);
|
|
if (type < 0)
|
|
die(_("object %s not found"), sha1_to_hex(ref->new_sha1));
|
|
|
|
if (!hashcmp(ref->old_sha1, ref->new_sha1)) {
|
|
if (verbosity > 0)
|
|
sprintf(display, "= %-*s %-*s -> %s", TRANSPORT_SUMMARY_WIDTH,
|
|
_("[up to date]"), REFCOL_WIDTH, remote,
|
|
pretty_ref);
|
|
return 0;
|
|
}
|
|
|
|
if (current_branch &&
|
|
!strcmp(ref->name, current_branch->name) &&
|
|
!(update_head_ok || is_bare_repository()) &&
|
|
!is_null_sha1(ref->old_sha1)) {
|
|
/*
|
|
* If this is the head, and it's not okay to update
|
|
* the head, and the old value of the head isn't empty...
|
|
*/
|
|
sprintf(display, _("! %-*s %-*s -> %s (can't fetch in current branch)"),
|
|
TRANSPORT_SUMMARY_WIDTH, _("[rejected]"), REFCOL_WIDTH, remote,
|
|
pretty_ref);
|
|
return 1;
|
|
}
|
|
|
|
if (!is_null_sha1(ref->old_sha1) &&
|
|
!prefixcmp(ref->name, "refs/tags/")) {
|
|
int r;
|
|
r = s_update_ref("updating tag", ref, 0);
|
|
sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '-',
|
|
TRANSPORT_SUMMARY_WIDTH, _("[tag update]"), REFCOL_WIDTH, remote,
|
|
pretty_ref, r ? _(" (unable to update local ref)") : "");
|
|
return r;
|
|
}
|
|
|
|
current = lookup_commit_reference_gently(ref->old_sha1, 1);
|
|
updated = lookup_commit_reference_gently(ref->new_sha1, 1);
|
|
if (!current || !updated) {
|
|
const char *msg;
|
|
const char *what;
|
|
int r;
|
|
if (!strncmp(ref->name, "refs/tags/", 10)) {
|
|
msg = "storing tag";
|
|
what = _("[new tag]");
|
|
}
|
|
else {
|
|
msg = "storing head";
|
|
what = _("[new branch]");
|
|
if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
|
|
(recurse_submodules != RECURSE_SUBMODULES_ON))
|
|
check_for_new_submodule_commits(ref->new_sha1);
|
|
}
|
|
|
|
r = s_update_ref(msg, ref, 0);
|
|
sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '*',
|
|
TRANSPORT_SUMMARY_WIDTH, what, REFCOL_WIDTH, remote, pretty_ref,
|
|
r ? _(" (unable to update local ref)") : "");
|
|
return r;
|
|
}
|
|
|
|
if (in_merge_bases(current, &updated, 1)) {
|
|
char quickref[83];
|
|
int r;
|
|
strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
|
|
strcat(quickref, "..");
|
|
strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV));
|
|
if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
|
|
(recurse_submodules != RECURSE_SUBMODULES_ON))
|
|
check_for_new_submodule_commits(ref->new_sha1);
|
|
r = s_update_ref("fast-forward", ref, 1);
|
|
sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : ' ',
|
|
TRANSPORT_SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
|
|
pretty_ref, r ? _(" (unable to update local ref)") : "");
|
|
return r;
|
|
} else if (force || ref->force) {
|
|
char quickref[84];
|
|
int r;
|
|
strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
|
|
strcat(quickref, "...");
|
|
strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV));
|
|
if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
|
|
(recurse_submodules != RECURSE_SUBMODULES_ON))
|
|
check_for_new_submodule_commits(ref->new_sha1);
|
|
r = s_update_ref("forced-update", ref, 1);
|
|
sprintf(display, "%c %-*s %-*s -> %s (%s)", r ? '!' : '+',
|
|
TRANSPORT_SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
|
|
pretty_ref,
|
|
r ? _("unable to update local ref") : _("forced update"));
|
|
return r;
|
|
} else {
|
|
sprintf(display, "! %-*s %-*s -> %s %s",
|
|
TRANSPORT_SUMMARY_WIDTH, _("[rejected]"), REFCOL_WIDTH, remote,
|
|
pretty_ref, _("(non-fast-forward)"));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int store_updated_refs(const char *raw_url, const char *remote_name,
|
|
struct ref *ref_map)
|
|
{
|
|
FILE *fp;
|
|
struct commit *commit;
|
|
int url_len, i, note_len, shown_url = 0, rc = 0;
|
|
char note[1024];
|
|
const char *what, *kind;
|
|
struct ref *rm;
|
|
char *url, *filename = dry_run ? "/dev/null" : git_path("FETCH_HEAD");
|
|
|
|
fp = fopen(filename, "a");
|
|
if (!fp)
|
|
return error(_("cannot open %s: %s\n"), filename, strerror(errno));
|
|
|
|
if (raw_url)
|
|
url = transport_anonymize_url(raw_url);
|
|
else
|
|
url = xstrdup("foreign");
|
|
for (rm = ref_map; rm; rm = rm->next) {
|
|
struct ref *ref = NULL;
|
|
|
|
if (rm->peer_ref) {
|
|
ref = xcalloc(1, sizeof(*ref) + strlen(rm->peer_ref->name) + 1);
|
|
strcpy(ref->name, rm->peer_ref->name);
|
|
hashcpy(ref->old_sha1, rm->peer_ref->old_sha1);
|
|
hashcpy(ref->new_sha1, rm->old_sha1);
|
|
ref->force = rm->peer_ref->force;
|
|
}
|
|
|
|
commit = lookup_commit_reference_gently(rm->old_sha1, 1);
|
|
if (!commit)
|
|
rm->merge = 0;
|
|
|
|
if (!strcmp(rm->name, "HEAD")) {
|
|
kind = "";
|
|
what = "";
|
|
}
|
|
else if (!prefixcmp(rm->name, "refs/heads/")) {
|
|
kind = "branch";
|
|
what = rm->name + 11;
|
|
}
|
|
else if (!prefixcmp(rm->name, "refs/tags/")) {
|
|
kind = "tag";
|
|
what = rm->name + 10;
|
|
}
|
|
else if (!prefixcmp(rm->name, "refs/remotes/")) {
|
|
kind = "remote-tracking branch";
|
|
what = rm->name + 13;
|
|
}
|
|
else {
|
|
kind = "";
|
|
what = rm->name;
|
|
}
|
|
|
|
url_len = strlen(url);
|
|
for (i = url_len - 1; url[i] == '/' && 0 <= i; i--)
|
|
;
|
|
url_len = i + 1;
|
|
if (4 < i && !strncmp(".git", url + i - 3, 4))
|
|
url_len = i - 3;
|
|
|
|
note_len = 0;
|
|
if (*what) {
|
|
if (*kind)
|
|
note_len += sprintf(note + note_len, "%s ",
|
|
kind);
|
|
note_len += sprintf(note + note_len, "'%s' of ", what);
|
|
}
|
|
note[note_len] = '\0';
|
|
fprintf(fp, "%s\t%s\t%s",
|
|
sha1_to_hex(commit ? commit->object.sha1 :
|
|
rm->old_sha1),
|
|
rm->merge ? "" : "not-for-merge",
|
|
note);
|
|
for (i = 0; i < url_len; ++i)
|
|
if ('\n' == url[i])
|
|
fputs("\\n", fp);
|
|
else
|
|
fputc(url[i], fp);
|
|
fputc('\n', fp);
|
|
|
|
if (ref) {
|
|
rc |= update_local_ref(ref, what, note);
|
|
free(ref);
|
|
} else
|
|
sprintf(note, "* %-*s %-*s -> FETCH_HEAD",
|
|
TRANSPORT_SUMMARY_WIDTH, *kind ? kind : "branch",
|
|
REFCOL_WIDTH, *what ? what : "HEAD");
|
|
if (*note) {
|
|
if (verbosity >= 0 && !shown_url) {
|
|
fprintf(stderr, _("From %.*s\n"),
|
|
url_len, url);
|
|
shown_url = 1;
|
|
}
|
|
if (verbosity >= 0)
|
|
fprintf(stderr, " %s\n", note);
|
|
}
|
|
}
|
|
free(url);
|
|
fclose(fp);
|
|
if (rc & STORE_REF_ERROR_DF_CONFLICT)
|
|
error(_("some local refs could not be updated; try running\n"
|
|
" 'git remote prune %s' to remove any old, conflicting "
|
|
"branches"), remote_name);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* We would want to bypass the object transfer altogether if
|
|
* everything we are going to fetch already exists and is connected
|
|
* locally.
|
|
*
|
|
* The refs we are going to fetch are in ref_map. If running
|
|
*
|
|
* $ git rev-list --objects --stdin --not --all
|
|
*
|
|
* (feeding all the refs in ref_map on its standard input)
|
|
* does not error out, that means everything reachable from the
|
|
* refs we are going to fetch exists and is connected to some of
|
|
* our existing refs.
|
|
*/
|
|
static int quickfetch(struct ref *ref_map)
|
|
{
|
|
struct child_process revlist;
|
|
struct ref *ref;
|
|
int err;
|
|
const char *argv[] = {"rev-list",
|
|
"--quiet", "--objects", "--stdin", "--not", "--all", NULL};
|
|
|
|
/*
|
|
* If we are deepening a shallow clone we already have these
|
|
* objects reachable. Running rev-list here will return with
|
|
* a good (0) exit status and we'll bypass the fetch that we
|
|
* really need to perform. Claiming failure now will ensure
|
|
* we perform the network exchange to deepen our history.
|
|
*/
|
|
if (depth)
|
|
return -1;
|
|
|
|
if (!ref_map)
|
|
return 0;
|
|
|
|
memset(&revlist, 0, sizeof(revlist));
|
|
revlist.argv = argv;
|
|
revlist.git_cmd = 1;
|
|
revlist.no_stdout = 1;
|
|
revlist.no_stderr = 1;
|
|
revlist.in = -1;
|
|
|
|
err = start_command(&revlist);
|
|
if (err) {
|
|
error(_("could not run rev-list"));
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* If rev-list --stdin encounters an unknown commit, it terminates,
|
|
* which will cause SIGPIPE in the write loop below.
|
|
*/
|
|
sigchain_push(SIGPIPE, SIG_IGN);
|
|
|
|
for (ref = ref_map; ref; ref = ref->next) {
|
|
if (write_in_full(revlist.in, sha1_to_hex(ref->old_sha1), 40) < 0 ||
|
|
write_str_in_full(revlist.in, "\n") < 0) {
|
|
if (errno != EPIPE && errno != EINVAL)
|
|
error(_("failed write to rev-list: %s"), strerror(errno));
|
|
err = -1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (close(revlist.in)) {
|
|
error(_("failed to close rev-list's stdin: %s"), strerror(errno));
|
|
err = -1;
|
|
}
|
|
|
|
sigchain_pop(SIGPIPE);
|
|
|
|
return finish_command(&revlist) || err;
|
|
}
|
|
|
|
static int fetch_refs(struct transport *transport, struct ref *ref_map)
|
|
{
|
|
int ret = quickfetch(ref_map);
|
|
if (ret)
|
|
ret = transport_fetch_refs(transport, ref_map);
|
|
if (!ret)
|
|
ret |= store_updated_refs(transport->url,
|
|
transport->remote->name,
|
|
ref_map);
|
|
transport_unlock_pack(transport);
|
|
return ret;
|
|
}
|
|
|
|
static int prune_refs(struct refspec *refs, int ref_count, struct ref *ref_map)
|
|
{
|
|
int result = 0;
|
|
struct ref *ref, *stale_refs = get_stale_heads(refs, ref_count, ref_map);
|
|
const char *dangling_msg = dry_run
|
|
? _(" (%s will become dangling)\n")
|
|
: _(" (%s has become dangling)\n");
|
|
|
|
for (ref = stale_refs; ref; ref = ref->next) {
|
|
if (!dry_run)
|
|
result |= delete_ref(ref->name, NULL, 0);
|
|
if (verbosity >= 0) {
|
|
fprintf(stderr, " x %-*s %-*s -> %s\n",
|
|
TRANSPORT_SUMMARY_WIDTH, _("[deleted]"),
|
|
REFCOL_WIDTH, _("(none)"), prettify_refname(ref->name));
|
|
warn_dangling_symref(stderr, dangling_msg, ref->name);
|
|
}
|
|
}
|
|
free_refs(stale_refs);
|
|
return result;
|
|
}
|
|
|
|
static int add_existing(const char *refname, const unsigned char *sha1,
|
|
int flag, void *cbdata)
|
|
{
|
|
struct string_list *list = (struct string_list *)cbdata;
|
|
struct string_list_item *item = string_list_insert(list, refname);
|
|
item->util = (void *)sha1;
|
|
return 0;
|
|
}
|
|
|
|
static int will_fetch(struct ref **head, const unsigned char *sha1)
|
|
{
|
|
struct ref *rm = *head;
|
|
while (rm) {
|
|
if (!hashcmp(rm->old_sha1, sha1))
|
|
return 1;
|
|
rm = rm->next;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void find_non_local_tags(struct transport *transport,
|
|
struct ref **head,
|
|
struct ref ***tail)
|
|
{
|
|
struct string_list existing_refs = STRING_LIST_INIT_NODUP;
|
|
struct string_list remote_refs = STRING_LIST_INIT_NODUP;
|
|
const struct ref *ref;
|
|
struct string_list_item *item = NULL;
|
|
|
|
for_each_ref(add_existing, &existing_refs);
|
|
for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
|
|
if (prefixcmp(ref->name, "refs/tags"))
|
|
continue;
|
|
|
|
/*
|
|
* The peeled ref always follows the matching base
|
|
* ref, so if we see a peeled ref that we don't want
|
|
* to fetch then we can mark the ref entry in the list
|
|
* as one to ignore by setting util to NULL.
|
|
*/
|
|
if (!suffixcmp(ref->name, "^{}")) {
|
|
if (item && !has_sha1_file(ref->old_sha1) &&
|
|
!will_fetch(head, ref->old_sha1) &&
|
|
!has_sha1_file(item->util) &&
|
|
!will_fetch(head, item->util))
|
|
item->util = NULL;
|
|
item = NULL;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If item is non-NULL here, then we previously saw a
|
|
* ref not followed by a peeled reference, so we need
|
|
* to check if it is a lightweight tag that we want to
|
|
* fetch.
|
|
*/
|
|
if (item && !has_sha1_file(item->util) &&
|
|
!will_fetch(head, item->util))
|
|
item->util = NULL;
|
|
|
|
item = NULL;
|
|
|
|
/* skip duplicates and refs that we already have */
|
|
if (string_list_has_string(&remote_refs, ref->name) ||
|
|
string_list_has_string(&existing_refs, ref->name))
|
|
continue;
|
|
|
|
item = string_list_insert(&remote_refs, ref->name);
|
|
item->util = (void *)ref->old_sha1;
|
|
}
|
|
string_list_clear(&existing_refs, 0);
|
|
|
|
/*
|
|
* We may have a final lightweight tag that needs to be
|
|
* checked to see if it needs fetching.
|
|
*/
|
|
if (item && !has_sha1_file(item->util) &&
|
|
!will_fetch(head, item->util))
|
|
item->util = NULL;
|
|
|
|
/*
|
|
* For all the tags in the remote_refs string list,
|
|
* add them to the list of refs to be fetched
|
|
*/
|
|
for_each_string_list_item(item, &remote_refs) {
|
|
/* Unless we have already decided to ignore this item... */
|
|
if (item->util)
|
|
{
|
|
struct ref *rm = alloc_ref(item->string);
|
|
rm->peer_ref = alloc_ref(item->string);
|
|
hashcpy(rm->old_sha1, item->util);
|
|
**tail = rm;
|
|
*tail = &rm->next;
|
|
}
|
|
}
|
|
|
|
string_list_clear(&remote_refs, 0);
|
|
}
|
|
|
|
static void check_not_current_branch(struct ref *ref_map)
|
|
{
|
|
struct branch *current_branch = branch_get(NULL);
|
|
|
|
if (is_bare_repository() || !current_branch)
|
|
return;
|
|
|
|
for (; ref_map; ref_map = ref_map->next)
|
|
if (ref_map->peer_ref && !strcmp(current_branch->refname,
|
|
ref_map->peer_ref->name))
|
|
die(_("Refusing to fetch into current branch %s "
|
|
"of non-bare repository"), current_branch->refname);
|
|
}
|
|
|
|
static int truncate_fetch_head(void)
|
|
{
|
|
char *filename = git_path("FETCH_HEAD");
|
|
FILE *fp = fopen(filename, "w");
|
|
|
|
if (!fp)
|
|
return error(_("cannot open %s: %s\n"), filename, strerror(errno));
|
|
fclose(fp);
|
|
return 0;
|
|
}
|
|
|
|
static int do_fetch(struct transport *transport,
|
|
struct refspec *refs, int ref_count)
|
|
{
|
|
struct string_list existing_refs = STRING_LIST_INIT_NODUP;
|
|
struct string_list_item *peer_item = NULL;
|
|
struct ref *ref_map;
|
|
struct ref *rm;
|
|
int autotags = (transport->remote->fetch_tags == 1);
|
|
|
|
for_each_ref(add_existing, &existing_refs);
|
|
|
|
if (tags == TAGS_DEFAULT) {
|
|
if (transport->remote->fetch_tags == 2)
|
|
tags = TAGS_SET;
|
|
if (transport->remote->fetch_tags == -1)
|
|
tags = TAGS_UNSET;
|
|
}
|
|
|
|
if (!transport->get_refs_list || !transport->fetch)
|
|
die(_("Don't know how to fetch from %s"), transport->url);
|
|
|
|
/* if not appending, truncate FETCH_HEAD */
|
|
if (!append && !dry_run) {
|
|
int errcode = truncate_fetch_head();
|
|
if (errcode)
|
|
return errcode;
|
|
}
|
|
|
|
ref_map = get_ref_map(transport, refs, ref_count, tags, &autotags);
|
|
if (!update_head_ok)
|
|
check_not_current_branch(ref_map);
|
|
|
|
for (rm = ref_map; rm; rm = rm->next) {
|
|
if (rm->peer_ref) {
|
|
peer_item = string_list_lookup(&existing_refs,
|
|
rm->peer_ref->name);
|
|
if (peer_item)
|
|
hashcpy(rm->peer_ref->old_sha1,
|
|
peer_item->util);
|
|
}
|
|
}
|
|
|
|
if (tags == TAGS_DEFAULT && autotags)
|
|
transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
|
|
if (fetch_refs(transport, ref_map)) {
|
|
free_refs(ref_map);
|
|
return 1;
|
|
}
|
|
if (prune) {
|
|
if (ref_count)
|
|
prune_refs(refs, ref_count, ref_map);
|
|
else
|
|
prune_refs(transport->remote->fetch, transport->remote->fetch_refspec_nr, ref_map);
|
|
}
|
|
free_refs(ref_map);
|
|
|
|
/* if neither --no-tags nor --tags was specified, do automated tag
|
|
* following ... */
|
|
if (tags == TAGS_DEFAULT && autotags) {
|
|
struct ref **tail = &ref_map;
|
|
ref_map = NULL;
|
|
find_non_local_tags(transport, &ref_map, &tail);
|
|
if (ref_map) {
|
|
transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
|
|
transport_set_option(transport, TRANS_OPT_DEPTH, "0");
|
|
fetch_refs(transport, ref_map);
|
|
}
|
|
free_refs(ref_map);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void set_option(const char *name, const char *value)
|
|
{
|
|
int r = transport_set_option(transport, name, value);
|
|
if (r < 0)
|
|
die(_("Option \"%s\" value \"%s\" is not valid for %s"),
|
|
name, value, transport->url);
|
|
if (r > 0)
|
|
warning(_("Option \"%s\" is ignored for %s\n"),
|
|
name, transport->url);
|
|
}
|
|
|
|
static int get_one_remote_for_fetch(struct remote *remote, void *priv)
|
|
{
|
|
struct string_list *list = priv;
|
|
if (!remote->skip_default_update)
|
|
string_list_append(list, remote->name);
|
|
return 0;
|
|
}
|
|
|
|
struct remote_group_data {
|
|
const char *name;
|
|
struct string_list *list;
|
|
};
|
|
|
|
static int get_remote_group(const char *key, const char *value, void *priv)
|
|
{
|
|
struct remote_group_data *g = priv;
|
|
|
|
if (!prefixcmp(key, "remotes.") &&
|
|
!strcmp(key + 8, g->name)) {
|
|
/* split list by white space */
|
|
int space = strcspn(value, " \t\n");
|
|
while (*value) {
|
|
if (space > 1) {
|
|
string_list_append(g->list,
|
|
xstrndup(value, space));
|
|
}
|
|
value += space + (value[space] != '\0');
|
|
space = strcspn(value, " \t\n");
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int add_remote_or_group(const char *name, struct string_list *list)
|
|
{
|
|
int prev_nr = list->nr;
|
|
struct remote_group_data g;
|
|
g.name = name; g.list = list;
|
|
|
|
git_config(get_remote_group, &g);
|
|
if (list->nr == prev_nr) {
|
|
struct remote *remote;
|
|
if (!remote_is_configured(name))
|
|
return 0;
|
|
remote = remote_get(name);
|
|
string_list_append(list, remote->name);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void add_options_to_argv(int *argc, const char **argv)
|
|
{
|
|
if (dry_run)
|
|
argv[(*argc)++] = "--dry-run";
|
|
if (prune)
|
|
argv[(*argc)++] = "--prune";
|
|
if (update_head_ok)
|
|
argv[(*argc)++] = "--update-head-ok";
|
|
if (force)
|
|
argv[(*argc)++] = "--force";
|
|
if (keep)
|
|
argv[(*argc)++] = "--keep";
|
|
if (recurse_submodules == RECURSE_SUBMODULES_ON)
|
|
argv[(*argc)++] = "--recurse-submodules";
|
|
else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
|
|
argv[(*argc)++] = "--recurse-submodules=on-demand";
|
|
if (verbosity >= 2)
|
|
argv[(*argc)++] = "-v";
|
|
if (verbosity >= 1)
|
|
argv[(*argc)++] = "-v";
|
|
else if (verbosity < 0)
|
|
argv[(*argc)++] = "-q";
|
|
|
|
}
|
|
|
|
static int fetch_multiple(struct string_list *list)
|
|
{
|
|
int i, result = 0;
|
|
const char *argv[12] = { "fetch", "--append" };
|
|
int argc = 2;
|
|
|
|
add_options_to_argv(&argc, argv);
|
|
|
|
if (!append && !dry_run) {
|
|
int errcode = truncate_fetch_head();
|
|
if (errcode)
|
|
return errcode;
|
|
}
|
|
|
|
for (i = 0; i < list->nr; i++) {
|
|
const char *name = list->items[i].string;
|
|
argv[argc] = name;
|
|
argv[argc + 1] = NULL;
|
|
if (verbosity >= 0)
|
|
printf(_("Fetching %s\n"), name);
|
|
if (run_command_v_opt(argv, RUN_GIT_CMD)) {
|
|
error(_("Could not fetch %s"), name);
|
|
result = 1;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static int fetch_one(struct remote *remote, int argc, const char **argv)
|
|
{
|
|
int i;
|
|
static const char **refs = NULL;
|
|
struct refspec *refspec;
|
|
int ref_nr = 0;
|
|
int exit_code;
|
|
|
|
if (!remote)
|
|
die(_("No remote repository specified. Please, specify either a URL or a\n"
|
|
"remote name from which new revisions should be fetched."));
|
|
|
|
transport = transport_get(remote, NULL);
|
|
transport_set_verbosity(transport, verbosity, progress);
|
|
if (upload_pack)
|
|
set_option(TRANS_OPT_UPLOADPACK, upload_pack);
|
|
if (keep)
|
|
set_option(TRANS_OPT_KEEP, "yes");
|
|
if (depth)
|
|
set_option(TRANS_OPT_DEPTH, depth);
|
|
|
|
if (argc > 0) {
|
|
int j = 0;
|
|
refs = xcalloc(argc + 1, sizeof(const char *));
|
|
for (i = 0; i < argc; i++) {
|
|
if (!strcmp(argv[i], "tag")) {
|
|
char *ref;
|
|
i++;
|
|
if (i >= argc)
|
|
die(_("You need to specify a tag name."));
|
|
ref = xmalloc(strlen(argv[i]) * 2 + 22);
|
|
strcpy(ref, "refs/tags/");
|
|
strcat(ref, argv[i]);
|
|
strcat(ref, ":refs/tags/");
|
|
strcat(ref, argv[i]);
|
|
refs[j++] = ref;
|
|
} else
|
|
refs[j++] = argv[i];
|
|
}
|
|
refs[j] = NULL;
|
|
ref_nr = j;
|
|
}
|
|
|
|
sigchain_push_common(unlock_pack_on_signal);
|
|
atexit(unlock_pack);
|
|
refspec = parse_fetch_refspec(ref_nr, refs);
|
|
exit_code = do_fetch(transport, refspec, ref_nr);
|
|
free_refspec(ref_nr, refspec);
|
|
transport_disconnect(transport);
|
|
transport = NULL;
|
|
return exit_code;
|
|
}
|
|
|
|
int cmd_fetch(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int i;
|
|
struct string_list list = STRING_LIST_INIT_NODUP;
|
|
struct remote *remote;
|
|
int result = 0;
|
|
|
|
packet_trace_identity("fetch");
|
|
|
|
/* Record the command line for the reflog */
|
|
strbuf_addstr(&default_rla, "fetch");
|
|
for (i = 1; i < argc; i++)
|
|
strbuf_addf(&default_rla, " %s", argv[i]);
|
|
|
|
argc = parse_options(argc, argv, prefix,
|
|
builtin_fetch_options, builtin_fetch_usage, 0);
|
|
|
|
if (recurse_submodules != RECURSE_SUBMODULES_OFF) {
|
|
if (recurse_submodules_default) {
|
|
int arg = parse_fetch_recurse_submodules_arg("--recurse-submodules-default", recurse_submodules_default);
|
|
set_config_fetch_recurse_submodules(arg);
|
|
}
|
|
gitmodules_config();
|
|
git_config(submodule_config, NULL);
|
|
}
|
|
|
|
if (all) {
|
|
if (argc == 1)
|
|
die(_("fetch --all does not take a repository argument"));
|
|
else if (argc > 1)
|
|
die(_("fetch --all does not make sense with refspecs"));
|
|
(void) for_each_remote(get_one_remote_for_fetch, &list);
|
|
result = fetch_multiple(&list);
|
|
} else if (argc == 0) {
|
|
/* No arguments -- use default remote */
|
|
remote = remote_get(NULL);
|
|
result = fetch_one(remote, argc, argv);
|
|
} else if (multiple) {
|
|
/* All arguments are assumed to be remotes or groups */
|
|
for (i = 0; i < argc; i++)
|
|
if (!add_remote_or_group(argv[i], &list))
|
|
die(_("No such remote or remote group: %s"), argv[i]);
|
|
result = fetch_multiple(&list);
|
|
} else {
|
|
/* Single remote or group */
|
|
(void) add_remote_or_group(argv[0], &list);
|
|
if (list.nr > 1) {
|
|
/* More than one remote */
|
|
if (argc > 1)
|
|
die(_("Fetching a group and specifying refspecs does not make sense"));
|
|
result = fetch_multiple(&list);
|
|
} else {
|
|
/* Zero or one remotes */
|
|
remote = remote_get(argv[0]);
|
|
result = fetch_one(remote, argc-1, argv+1);
|
|
}
|
|
}
|
|
|
|
if (!result && (recurse_submodules != RECURSE_SUBMODULES_OFF)) {
|
|
const char *options[10];
|
|
int num_options = 0;
|
|
add_options_to_argv(&num_options, options);
|
|
result = fetch_populated_submodules(num_options, options,
|
|
submodule_prefix,
|
|
recurse_submodules,
|
|
verbosity < 0);
|
|
}
|
|
|
|
/* All names were strdup()ed or strndup()ed */
|
|
list.strdup_strings = 1;
|
|
string_list_clear(&list, 0);
|
|
|
|
return result;
|
|
}
|