mirror of
https://github.com/git/git.git
synced 2024-11-25 02:44:48 +08:00
11877b9ebe
Various codepaths in the core-ish part learn to work on an arbitrary in-core index structure, not necessarily the default instance "the_index". * nd/the-index: (23 commits) revision.c: reduce implicit dependency the_repository revision.c: remove implicit dependency on the_index ws.c: remove implicit dependency on the_index tree-diff.c: remove implicit dependency on the_index submodule.c: remove implicit dependency on the_index line-range.c: remove implicit dependency on the_index userdiff.c: remove implicit dependency on the_index rerere.c: remove implicit dependency on the_index sha1-file.c: remove implicit dependency on the_index patch-ids.c: remove implicit dependency on the_index merge.c: remove implicit dependency on the_index merge-blobs.c: remove implicit dependency on the_index ll-merge.c: remove implicit dependency on the_index diff-lib.c: remove implicit dependency on the_index read-cache.c: remove implicit dependency on the_index diff.c: remove implicit dependency on the_index grep.c: remove implicit dependency on the_index diff.c: remove the_index dependency in textconv() functions blame.c: rename "repo" argument to "r" combine-diff.c: remove implicit dependency on the_index ...
2203 lines
55 KiB
C
2203 lines
55 KiB
C
#include "cache.h"
|
|
#include "config.h"
|
|
#include "remote.h"
|
|
#include "refs.h"
|
|
#include "refspec.h"
|
|
#include "object-store.h"
|
|
#include "commit.h"
|
|
#include "diff.h"
|
|
#include "revision.h"
|
|
#include "dir.h"
|
|
#include "tag.h"
|
|
#include "string-list.h"
|
|
#include "mergesort.h"
|
|
#include "argv-array.h"
|
|
#include "commit-reach.h"
|
|
|
|
enum map_direction { FROM_SRC, FROM_DST };
|
|
|
|
struct counted_string {
|
|
size_t len;
|
|
const char *s;
|
|
};
|
|
struct rewrite {
|
|
const char *base;
|
|
size_t baselen;
|
|
struct counted_string *instead_of;
|
|
int instead_of_nr;
|
|
int instead_of_alloc;
|
|
};
|
|
struct rewrites {
|
|
struct rewrite **rewrite;
|
|
int rewrite_alloc;
|
|
int rewrite_nr;
|
|
};
|
|
|
|
static struct remote **remotes;
|
|
static int remotes_alloc;
|
|
static int remotes_nr;
|
|
static struct hashmap remotes_hash;
|
|
|
|
static struct branch **branches;
|
|
static int branches_alloc;
|
|
static int branches_nr;
|
|
|
|
static struct branch *current_branch;
|
|
static const char *pushremote_name;
|
|
|
|
static struct rewrites rewrites;
|
|
static struct rewrites rewrites_push;
|
|
|
|
static int valid_remote(const struct remote *remote)
|
|
{
|
|
return (!!remote->url) || (!!remote->foreign_vcs);
|
|
}
|
|
|
|
static const char *alias_url(const char *url, struct rewrites *r)
|
|
{
|
|
int i, j;
|
|
struct counted_string *longest;
|
|
int longest_i;
|
|
|
|
longest = NULL;
|
|
longest_i = -1;
|
|
for (i = 0; i < r->rewrite_nr; i++) {
|
|
if (!r->rewrite[i])
|
|
continue;
|
|
for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) {
|
|
if (starts_with(url, r->rewrite[i]->instead_of[j].s) &&
|
|
(!longest ||
|
|
longest->len < r->rewrite[i]->instead_of[j].len)) {
|
|
longest = &(r->rewrite[i]->instead_of[j]);
|
|
longest_i = i;
|
|
}
|
|
}
|
|
}
|
|
if (!longest)
|
|
return url;
|
|
|
|
return xstrfmt("%s%s", r->rewrite[longest_i]->base, url + longest->len);
|
|
}
|
|
|
|
static void add_url(struct remote *remote, const char *url)
|
|
{
|
|
ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
|
|
remote->url[remote->url_nr++] = url;
|
|
}
|
|
|
|
static void add_pushurl(struct remote *remote, const char *pushurl)
|
|
{
|
|
ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc);
|
|
remote->pushurl[remote->pushurl_nr++] = pushurl;
|
|
}
|
|
|
|
static void add_pushurl_alias(struct remote *remote, const char *url)
|
|
{
|
|
const char *pushurl = alias_url(url, &rewrites_push);
|
|
if (pushurl != url)
|
|
add_pushurl(remote, pushurl);
|
|
}
|
|
|
|
static void add_url_alias(struct remote *remote, const char *url)
|
|
{
|
|
add_url(remote, alias_url(url, &rewrites));
|
|
add_pushurl_alias(remote, url);
|
|
}
|
|
|
|
struct remotes_hash_key {
|
|
const char *str;
|
|
int len;
|
|
};
|
|
|
|
static int remotes_hash_cmp(const void *unused_cmp_data,
|
|
const void *entry,
|
|
const void *entry_or_key,
|
|
const void *keydata)
|
|
{
|
|
const struct remote *a = entry;
|
|
const struct remote *b = entry_or_key;
|
|
const struct remotes_hash_key *key = keydata;
|
|
|
|
if (key)
|
|
return strncmp(a->name, key->str, key->len) || a->name[key->len];
|
|
else
|
|
return strcmp(a->name, b->name);
|
|
}
|
|
|
|
static inline void init_remotes_hash(void)
|
|
{
|
|
if (!remotes_hash.cmpfn)
|
|
hashmap_init(&remotes_hash, remotes_hash_cmp, NULL, 0);
|
|
}
|
|
|
|
static struct remote *make_remote(const char *name, int len)
|
|
{
|
|
struct remote *ret, *replaced;
|
|
struct remotes_hash_key lookup;
|
|
struct hashmap_entry lookup_entry;
|
|
|
|
if (!len)
|
|
len = strlen(name);
|
|
|
|
init_remotes_hash();
|
|
lookup.str = name;
|
|
lookup.len = len;
|
|
hashmap_entry_init(&lookup_entry, memhash(name, len));
|
|
|
|
if ((ret = hashmap_get(&remotes_hash, &lookup_entry, &lookup)) != NULL)
|
|
return ret;
|
|
|
|
ret = xcalloc(1, sizeof(struct remote));
|
|
ret->prune = -1; /* unspecified */
|
|
ret->prune_tags = -1; /* unspecified */
|
|
ret->name = xstrndup(name, len);
|
|
refspec_init(&ret->push, REFSPEC_PUSH);
|
|
refspec_init(&ret->fetch, REFSPEC_FETCH);
|
|
|
|
ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
|
|
remotes[remotes_nr++] = ret;
|
|
|
|
hashmap_entry_init(ret, lookup_entry.hash);
|
|
replaced = hashmap_put(&remotes_hash, ret);
|
|
assert(replaced == NULL); /* no previous entry overwritten */
|
|
return ret;
|
|
}
|
|
|
|
static void add_merge(struct branch *branch, const char *name)
|
|
{
|
|
ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
|
|
branch->merge_alloc);
|
|
branch->merge_name[branch->merge_nr++] = name;
|
|
}
|
|
|
|
static struct branch *make_branch(const char *name, int len)
|
|
{
|
|
struct branch *ret;
|
|
int i;
|
|
|
|
for (i = 0; i < branches_nr; i++) {
|
|
if (len ? (!strncmp(name, branches[i]->name, len) &&
|
|
!branches[i]->name[len]) :
|
|
!strcmp(name, branches[i]->name))
|
|
return branches[i];
|
|
}
|
|
|
|
ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
|
|
ret = xcalloc(1, sizeof(struct branch));
|
|
branches[branches_nr++] = ret;
|
|
if (len)
|
|
ret->name = xstrndup(name, len);
|
|
else
|
|
ret->name = xstrdup(name);
|
|
ret->refname = xstrfmt("refs/heads/%s", ret->name);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len)
|
|
{
|
|
struct rewrite *ret;
|
|
int i;
|
|
|
|
for (i = 0; i < r->rewrite_nr; i++) {
|
|
if (len
|
|
? (len == r->rewrite[i]->baselen &&
|
|
!strncmp(base, r->rewrite[i]->base, len))
|
|
: !strcmp(base, r->rewrite[i]->base))
|
|
return r->rewrite[i];
|
|
}
|
|
|
|
ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc);
|
|
ret = xcalloc(1, sizeof(struct rewrite));
|
|
r->rewrite[r->rewrite_nr++] = ret;
|
|
if (len) {
|
|
ret->base = xstrndup(base, len);
|
|
ret->baselen = len;
|
|
}
|
|
else {
|
|
ret->base = xstrdup(base);
|
|
ret->baselen = strlen(base);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
|
|
{
|
|
ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
|
|
rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
|
|
rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
|
|
rewrite->instead_of_nr++;
|
|
}
|
|
|
|
static const char *skip_spaces(const char *s)
|
|
{
|
|
while (isspace(*s))
|
|
s++;
|
|
return s;
|
|
}
|
|
|
|
static void read_remotes_file(struct remote *remote)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
FILE *f = fopen_or_warn(git_path("remotes/%s", remote->name), "r");
|
|
|
|
if (!f)
|
|
return;
|
|
remote->configured_in_repo = 1;
|
|
remote->origin = REMOTE_REMOTES;
|
|
while (strbuf_getline(&buf, f) != EOF) {
|
|
const char *v;
|
|
|
|
strbuf_rtrim(&buf);
|
|
|
|
if (skip_prefix(buf.buf, "URL:", &v))
|
|
add_url_alias(remote, xstrdup(skip_spaces(v)));
|
|
else if (skip_prefix(buf.buf, "Push:", &v))
|
|
refspec_append(&remote->push, skip_spaces(v));
|
|
else if (skip_prefix(buf.buf, "Pull:", &v))
|
|
refspec_append(&remote->fetch, skip_spaces(v));
|
|
}
|
|
strbuf_release(&buf);
|
|
fclose(f);
|
|
}
|
|
|
|
static void read_branches_file(struct remote *remote)
|
|
{
|
|
char *frag;
|
|
struct strbuf buf = STRBUF_INIT;
|
|
FILE *f = fopen_or_warn(git_path("branches/%s", remote->name), "r");
|
|
|
|
if (!f)
|
|
return;
|
|
|
|
strbuf_getline_lf(&buf, f);
|
|
fclose(f);
|
|
strbuf_trim(&buf);
|
|
if (!buf.len) {
|
|
strbuf_release(&buf);
|
|
return;
|
|
}
|
|
|
|
remote->configured_in_repo = 1;
|
|
remote->origin = REMOTE_BRANCHES;
|
|
|
|
/*
|
|
* The branches file would have URL and optionally
|
|
* #branch specified. The "master" (or specified) branch is
|
|
* fetched and stored in the local branch matching the
|
|
* remote name.
|
|
*/
|
|
frag = strchr(buf.buf, '#');
|
|
if (frag)
|
|
*(frag++) = '\0';
|
|
else
|
|
frag = "master";
|
|
|
|
add_url_alias(remote, strbuf_detach(&buf, NULL));
|
|
strbuf_addf(&buf, "refs/heads/%s:refs/heads/%s",
|
|
frag, remote->name);
|
|
refspec_append(&remote->fetch, buf.buf);
|
|
|
|
/*
|
|
* Cogito compatible push: push current HEAD to remote #branch
|
|
* (master if missing)
|
|
*/
|
|
strbuf_reset(&buf);
|
|
strbuf_addf(&buf, "HEAD:refs/heads/%s", frag);
|
|
refspec_append(&remote->push, buf.buf);
|
|
remote->fetch_tags = 1; /* always auto-follow */
|
|
strbuf_release(&buf);
|
|
}
|
|
|
|
static int handle_config(const char *key, const char *value, void *cb)
|
|
{
|
|
const char *name;
|
|
int namelen;
|
|
const char *subkey;
|
|
struct remote *remote;
|
|
struct branch *branch;
|
|
if (parse_config_key(key, "branch", &name, &namelen, &subkey) >= 0) {
|
|
if (!name)
|
|
return 0;
|
|
branch = make_branch(name, namelen);
|
|
if (!strcmp(subkey, "remote")) {
|
|
return git_config_string(&branch->remote_name, key, value);
|
|
} else if (!strcmp(subkey, "pushremote")) {
|
|
return git_config_string(&branch->pushremote_name, key, value);
|
|
} else if (!strcmp(subkey, "merge")) {
|
|
if (!value)
|
|
return config_error_nonbool(key);
|
|
add_merge(branch, xstrdup(value));
|
|
}
|
|
return 0;
|
|
}
|
|
if (parse_config_key(key, "url", &name, &namelen, &subkey) >= 0) {
|
|
struct rewrite *rewrite;
|
|
if (!name)
|
|
return 0;
|
|
if (!strcmp(subkey, "insteadof")) {
|
|
rewrite = make_rewrite(&rewrites, name, namelen);
|
|
if (!value)
|
|
return config_error_nonbool(key);
|
|
add_instead_of(rewrite, xstrdup(value));
|
|
} else if (!strcmp(subkey, "pushinsteadof")) {
|
|
rewrite = make_rewrite(&rewrites_push, name, namelen);
|
|
if (!value)
|
|
return config_error_nonbool(key);
|
|
add_instead_of(rewrite, xstrdup(value));
|
|
}
|
|
}
|
|
|
|
if (parse_config_key(key, "remote", &name, &namelen, &subkey) < 0)
|
|
return 0;
|
|
|
|
/* Handle remote.* variables */
|
|
if (!name && !strcmp(subkey, "pushdefault"))
|
|
return git_config_string(&pushremote_name, key, value);
|
|
|
|
if (!name)
|
|
return 0;
|
|
/* Handle remote.<name>.* variables */
|
|
if (*name == '/') {
|
|
warning("Config remote shorthand cannot begin with '/': %s",
|
|
name);
|
|
return 0;
|
|
}
|
|
remote = make_remote(name, namelen);
|
|
remote->origin = REMOTE_CONFIG;
|
|
if (current_config_scope() == CONFIG_SCOPE_REPO)
|
|
remote->configured_in_repo = 1;
|
|
if (!strcmp(subkey, "mirror"))
|
|
remote->mirror = git_config_bool(key, value);
|
|
else if (!strcmp(subkey, "skipdefaultupdate"))
|
|
remote->skip_default_update = git_config_bool(key, value);
|
|
else if (!strcmp(subkey, "skipfetchall"))
|
|
remote->skip_default_update = git_config_bool(key, value);
|
|
else if (!strcmp(subkey, "prune"))
|
|
remote->prune = git_config_bool(key, value);
|
|
else if (!strcmp(subkey, "prunetags"))
|
|
remote->prune_tags = git_config_bool(key, value);
|
|
else if (!strcmp(subkey, "url")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
add_url(remote, v);
|
|
} else if (!strcmp(subkey, "pushurl")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
add_pushurl(remote, v);
|
|
} else if (!strcmp(subkey, "push")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
refspec_append(&remote->push, v);
|
|
free((char *)v);
|
|
} else if (!strcmp(subkey, "fetch")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
refspec_append(&remote->fetch, v);
|
|
free((char *)v);
|
|
} else if (!strcmp(subkey, "receivepack")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
if (!remote->receivepack)
|
|
remote->receivepack = v;
|
|
else
|
|
error("more than one receivepack given, using the first");
|
|
} else if (!strcmp(subkey, "uploadpack")) {
|
|
const char *v;
|
|
if (git_config_string(&v, key, value))
|
|
return -1;
|
|
if (!remote->uploadpack)
|
|
remote->uploadpack = v;
|
|
else
|
|
error("more than one uploadpack given, using the first");
|
|
} else if (!strcmp(subkey, "tagopt")) {
|
|
if (!strcmp(value, "--no-tags"))
|
|
remote->fetch_tags = -1;
|
|
else if (!strcmp(value, "--tags"))
|
|
remote->fetch_tags = 2;
|
|
} else if (!strcmp(subkey, "proxy")) {
|
|
return git_config_string((const char **)&remote->http_proxy,
|
|
key, value);
|
|
} else if (!strcmp(subkey, "proxyauthmethod")) {
|
|
return git_config_string((const char **)&remote->http_proxy_authmethod,
|
|
key, value);
|
|
} else if (!strcmp(subkey, "vcs")) {
|
|
return git_config_string(&remote->foreign_vcs, key, value);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void alias_all_urls(void)
|
|
{
|
|
int i, j;
|
|
for (i = 0; i < remotes_nr; i++) {
|
|
int add_pushurl_aliases;
|
|
if (!remotes[i])
|
|
continue;
|
|
for (j = 0; j < remotes[i]->pushurl_nr; j++) {
|
|
remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites);
|
|
}
|
|
add_pushurl_aliases = remotes[i]->pushurl_nr == 0;
|
|
for (j = 0; j < remotes[i]->url_nr; j++) {
|
|
if (add_pushurl_aliases)
|
|
add_pushurl_alias(remotes[i], remotes[i]->url[j]);
|
|
remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void read_config(void)
|
|
{
|
|
static int loaded;
|
|
int flag;
|
|
|
|
if (loaded)
|
|
return;
|
|
loaded = 1;
|
|
|
|
current_branch = NULL;
|
|
if (startup_info->have_repository) {
|
|
const char *head_ref = resolve_ref_unsafe("HEAD", 0, NULL, &flag);
|
|
if (head_ref && (flag & REF_ISSYMREF) &&
|
|
skip_prefix(head_ref, "refs/heads/", &head_ref)) {
|
|
current_branch = make_branch(head_ref, 0);
|
|
}
|
|
}
|
|
git_config(handle_config, NULL);
|
|
alias_all_urls();
|
|
}
|
|
|
|
static int valid_remote_nick(const char *name)
|
|
{
|
|
if (!name[0] || is_dot_or_dotdot(name))
|
|
return 0;
|
|
|
|
/* remote nicknames cannot contain slashes */
|
|
while (*name)
|
|
if (is_dir_sep(*name++))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
const char *remote_for_branch(struct branch *branch, int *explicit)
|
|
{
|
|
if (branch && branch->remote_name) {
|
|
if (explicit)
|
|
*explicit = 1;
|
|
return branch->remote_name;
|
|
}
|
|
if (explicit)
|
|
*explicit = 0;
|
|
return "origin";
|
|
}
|
|
|
|
const char *pushremote_for_branch(struct branch *branch, int *explicit)
|
|
{
|
|
if (branch && branch->pushremote_name) {
|
|
if (explicit)
|
|
*explicit = 1;
|
|
return branch->pushremote_name;
|
|
}
|
|
if (pushremote_name) {
|
|
if (explicit)
|
|
*explicit = 1;
|
|
return pushremote_name;
|
|
}
|
|
return remote_for_branch(branch, explicit);
|
|
}
|
|
|
|
const char *remote_ref_for_branch(struct branch *branch, int for_push,
|
|
int *explicit)
|
|
{
|
|
if (branch) {
|
|
if (!for_push) {
|
|
if (branch->merge_nr) {
|
|
if (explicit)
|
|
*explicit = 1;
|
|
return branch->merge_name[0];
|
|
}
|
|
} else {
|
|
const char *dst, *remote_name =
|
|
pushremote_for_branch(branch, NULL);
|
|
struct remote *remote = remote_get(remote_name);
|
|
|
|
if (remote && remote->push.nr &&
|
|
(dst = apply_refspecs(&remote->push,
|
|
branch->refname))) {
|
|
if (explicit)
|
|
*explicit = 1;
|
|
return dst;
|
|
}
|
|
}
|
|
}
|
|
if (explicit)
|
|
*explicit = 0;
|
|
return "";
|
|
}
|
|
|
|
static struct remote *remote_get_1(const char *name,
|
|
const char *(*get_default)(struct branch *, int *))
|
|
{
|
|
struct remote *ret;
|
|
int name_given = 0;
|
|
|
|
read_config();
|
|
|
|
if (name)
|
|
name_given = 1;
|
|
else
|
|
name = get_default(current_branch, &name_given);
|
|
|
|
ret = make_remote(name, 0);
|
|
if (valid_remote_nick(name) && have_git_dir()) {
|
|
if (!valid_remote(ret))
|
|
read_remotes_file(ret);
|
|
if (!valid_remote(ret))
|
|
read_branches_file(ret);
|
|
}
|
|
if (name_given && !valid_remote(ret))
|
|
add_url_alias(ret, name);
|
|
if (!valid_remote(ret))
|
|
return NULL;
|
|
return ret;
|
|
}
|
|
|
|
struct remote *remote_get(const char *name)
|
|
{
|
|
return remote_get_1(name, remote_for_branch);
|
|
}
|
|
|
|
struct remote *pushremote_get(const char *name)
|
|
{
|
|
return remote_get_1(name, pushremote_for_branch);
|
|
}
|
|
|
|
int remote_is_configured(struct remote *remote, int in_repo)
|
|
{
|
|
if (!remote)
|
|
return 0;
|
|
if (in_repo)
|
|
return remote->configured_in_repo;
|
|
return !!remote->origin;
|
|
}
|
|
|
|
int for_each_remote(each_remote_fn fn, void *priv)
|
|
{
|
|
int i, result = 0;
|
|
read_config();
|
|
for (i = 0; i < remotes_nr && !result; i++) {
|
|
struct remote *r = remotes[i];
|
|
if (!r)
|
|
continue;
|
|
result = fn(r, priv);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void handle_duplicate(struct ref *ref1, struct ref *ref2)
|
|
{
|
|
if (strcmp(ref1->name, ref2->name)) {
|
|
if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
|
|
ref2->fetch_head_status != FETCH_HEAD_IGNORE) {
|
|
die(_("Cannot fetch both %s and %s to %s"),
|
|
ref1->name, ref2->name, ref2->peer_ref->name);
|
|
} else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
|
|
ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
|
|
warning(_("%s usually tracks %s, not %s"),
|
|
ref2->peer_ref->name, ref2->name, ref1->name);
|
|
} else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE &&
|
|
ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
|
|
die(_("%s tracks both %s and %s"),
|
|
ref2->peer_ref->name, ref1->name, ref2->name);
|
|
} else {
|
|
/*
|
|
* This last possibility doesn't occur because
|
|
* FETCH_HEAD_IGNORE entries always appear at
|
|
* the end of the list.
|
|
*/
|
|
die(_("Internal error"));
|
|
}
|
|
}
|
|
free(ref2->peer_ref);
|
|
free(ref2);
|
|
}
|
|
|
|
struct ref *ref_remove_duplicates(struct ref *ref_map)
|
|
{
|
|
struct string_list refs = STRING_LIST_INIT_NODUP;
|
|
struct ref *retval = NULL;
|
|
struct ref **p = &retval;
|
|
|
|
while (ref_map) {
|
|
struct ref *ref = ref_map;
|
|
|
|
ref_map = ref_map->next;
|
|
ref->next = NULL;
|
|
|
|
if (!ref->peer_ref) {
|
|
*p = ref;
|
|
p = &ref->next;
|
|
} else {
|
|
struct string_list_item *item =
|
|
string_list_insert(&refs, ref->peer_ref->name);
|
|
|
|
if (item->util) {
|
|
/* Entry already existed */
|
|
handle_duplicate((struct ref *)item->util, ref);
|
|
} else {
|
|
*p = ref;
|
|
p = &ref->next;
|
|
item->util = ref;
|
|
}
|
|
}
|
|
}
|
|
|
|
string_list_clear(&refs, 0);
|
|
return retval;
|
|
}
|
|
|
|
int remote_has_url(struct remote *remote, const char *url)
|
|
{
|
|
int i;
|
|
for (i = 0; i < remote->url_nr; i++) {
|
|
if (!strcmp(remote->url[i], url))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int match_name_with_pattern(const char *key, const char *name,
|
|
const char *value, char **result)
|
|
{
|
|
const char *kstar = strchr(key, '*');
|
|
size_t klen;
|
|
size_t ksuffixlen;
|
|
size_t namelen;
|
|
int ret;
|
|
if (!kstar)
|
|
die("Key '%s' of pattern had no '*'", key);
|
|
klen = kstar - key;
|
|
ksuffixlen = strlen(kstar + 1);
|
|
namelen = strlen(name);
|
|
ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen &&
|
|
!memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen);
|
|
if (ret && value) {
|
|
struct strbuf sb = STRBUF_INIT;
|
|
const char *vstar = strchr(value, '*');
|
|
if (!vstar)
|
|
die("Value '%s' of pattern has no '*'", value);
|
|
strbuf_add(&sb, value, vstar - value);
|
|
strbuf_add(&sb, name + klen, namelen - klen - ksuffixlen);
|
|
strbuf_addstr(&sb, vstar + 1);
|
|
*result = strbuf_detach(&sb, NULL);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void query_refspecs_multiple(struct refspec *rs,
|
|
struct refspec_item *query,
|
|
struct string_list *results)
|
|
{
|
|
int i;
|
|
int find_src = !query->src;
|
|
|
|
if (find_src && !query->dst)
|
|
error("query_refspecs_multiple: need either src or dst");
|
|
|
|
for (i = 0; i < rs->nr; i++) {
|
|
struct refspec_item *refspec = &rs->items[i];
|
|
const char *key = find_src ? refspec->dst : refspec->src;
|
|
const char *value = find_src ? refspec->src : refspec->dst;
|
|
const char *needle = find_src ? query->dst : query->src;
|
|
char **result = find_src ? &query->src : &query->dst;
|
|
|
|
if (!refspec->dst)
|
|
continue;
|
|
if (refspec->pattern) {
|
|
if (match_name_with_pattern(key, needle, value, result))
|
|
string_list_append_nodup(results, *result);
|
|
} else if (!strcmp(needle, key)) {
|
|
string_list_append(results, value);
|
|
}
|
|
}
|
|
}
|
|
|
|
int query_refspecs(struct refspec *rs, struct refspec_item *query)
|
|
{
|
|
int i;
|
|
int find_src = !query->src;
|
|
const char *needle = find_src ? query->dst : query->src;
|
|
char **result = find_src ? &query->src : &query->dst;
|
|
|
|
if (find_src && !query->dst)
|
|
return error("query_refspecs: need either src or dst");
|
|
|
|
for (i = 0; i < rs->nr; i++) {
|
|
struct refspec_item *refspec = &rs->items[i];
|
|
const char *key = find_src ? refspec->dst : refspec->src;
|
|
const char *value = find_src ? refspec->src : refspec->dst;
|
|
|
|
if (!refspec->dst)
|
|
continue;
|
|
if (refspec->pattern) {
|
|
if (match_name_with_pattern(key, needle, value, result)) {
|
|
query->force = refspec->force;
|
|
return 0;
|
|
}
|
|
} else if (!strcmp(needle, key)) {
|
|
*result = xstrdup(value);
|
|
query->force = refspec->force;
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
char *apply_refspecs(struct refspec *rs, const char *name)
|
|
{
|
|
struct refspec_item query;
|
|
|
|
memset(&query, 0, sizeof(struct refspec_item));
|
|
query.src = (char *)name;
|
|
|
|
if (query_refspecs(rs, &query))
|
|
return NULL;
|
|
|
|
return query.dst;
|
|
}
|
|
|
|
int remote_find_tracking(struct remote *remote, struct refspec_item *refspec)
|
|
{
|
|
return query_refspecs(&remote->fetch, refspec);
|
|
}
|
|
|
|
static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen,
|
|
const char *name)
|
|
{
|
|
size_t len = strlen(name);
|
|
struct ref *ref = xcalloc(1, st_add4(sizeof(*ref), prefixlen, len, 1));
|
|
memcpy(ref->name, prefix, prefixlen);
|
|
memcpy(ref->name + prefixlen, name, len);
|
|
return ref;
|
|
}
|
|
|
|
struct ref *alloc_ref(const char *name)
|
|
{
|
|
return alloc_ref_with_prefix("", 0, name);
|
|
}
|
|
|
|
struct ref *copy_ref(const struct ref *ref)
|
|
{
|
|
struct ref *cpy;
|
|
size_t len;
|
|
if (!ref)
|
|
return NULL;
|
|
len = st_add3(sizeof(struct ref), strlen(ref->name), 1);
|
|
cpy = xmalloc(len);
|
|
memcpy(cpy, ref, len);
|
|
cpy->next = NULL;
|
|
cpy->symref = xstrdup_or_null(ref->symref);
|
|
cpy->remote_status = xstrdup_or_null(ref->remote_status);
|
|
cpy->peer_ref = copy_ref(ref->peer_ref);
|
|
return cpy;
|
|
}
|
|
|
|
struct ref *copy_ref_list(const struct ref *ref)
|
|
{
|
|
struct ref *ret = NULL;
|
|
struct ref **tail = &ret;
|
|
while (ref) {
|
|
*tail = copy_ref(ref);
|
|
ref = ref->next;
|
|
tail = &((*tail)->next);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void free_ref(struct ref *ref)
|
|
{
|
|
if (!ref)
|
|
return;
|
|
free_ref(ref->peer_ref);
|
|
free(ref->remote_status);
|
|
free(ref->symref);
|
|
free(ref);
|
|
}
|
|
|
|
void free_refs(struct ref *ref)
|
|
{
|
|
struct ref *next;
|
|
while (ref) {
|
|
next = ref->next;
|
|
free_ref(ref);
|
|
ref = next;
|
|
}
|
|
}
|
|
|
|
int ref_compare_name(const void *va, const void *vb)
|
|
{
|
|
const struct ref *a = va, *b = vb;
|
|
return strcmp(a->name, b->name);
|
|
}
|
|
|
|
static void *ref_list_get_next(const void *a)
|
|
{
|
|
return ((const struct ref *)a)->next;
|
|
}
|
|
|
|
static void ref_list_set_next(void *a, void *next)
|
|
{
|
|
((struct ref *)a)->next = next;
|
|
}
|
|
|
|
void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *))
|
|
{
|
|
*l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp);
|
|
}
|
|
|
|
int count_refspec_match(const char *pattern,
|
|
struct ref *refs,
|
|
struct ref **matched_ref)
|
|
{
|
|
int patlen = strlen(pattern);
|
|
struct ref *matched_weak = NULL;
|
|
struct ref *matched = NULL;
|
|
int weak_match = 0;
|
|
int match = 0;
|
|
|
|
for (weak_match = match = 0; refs; refs = refs->next) {
|
|
char *name = refs->name;
|
|
int namelen = strlen(name);
|
|
|
|
if (!refname_match(pattern, name))
|
|
continue;
|
|
|
|
/* A match is "weak" if it is with refs outside
|
|
* heads or tags, and did not specify the pattern
|
|
* in full (e.g. "refs/remotes/origin/master") or at
|
|
* least from the toplevel (e.g. "remotes/origin/master");
|
|
* otherwise "git push $URL master" would result in
|
|
* ambiguity between remotes/origin/master and heads/master
|
|
* at the remote site.
|
|
*/
|
|
if (namelen != patlen &&
|
|
patlen != namelen - 5 &&
|
|
!starts_with(name, "refs/heads/") &&
|
|
!starts_with(name, "refs/tags/")) {
|
|
/* We want to catch the case where only weak
|
|
* matches are found and there are multiple
|
|
* matches, and where more than one strong
|
|
* matches are found, as ambiguous. One
|
|
* strong match with zero or more weak matches
|
|
* are acceptable as a unique match.
|
|
*/
|
|
matched_weak = refs;
|
|
weak_match++;
|
|
}
|
|
else {
|
|
matched = refs;
|
|
match++;
|
|
}
|
|
}
|
|
if (!matched) {
|
|
if (matched_ref)
|
|
*matched_ref = matched_weak;
|
|
return weak_match;
|
|
}
|
|
else {
|
|
if (matched_ref)
|
|
*matched_ref = matched;
|
|
return match;
|
|
}
|
|
}
|
|
|
|
static void tail_link_ref(struct ref *ref, struct ref ***tail)
|
|
{
|
|
**tail = ref;
|
|
while (ref->next)
|
|
ref = ref->next;
|
|
*tail = &ref->next;
|
|
}
|
|
|
|
static struct ref *alloc_delete_ref(void)
|
|
{
|
|
struct ref *ref = alloc_ref("(delete)");
|
|
oidclr(&ref->new_oid);
|
|
return ref;
|
|
}
|
|
|
|
static int try_explicit_object_name(const char *name,
|
|
struct ref **match)
|
|
{
|
|
struct object_id oid;
|
|
|
|
if (!*name) {
|
|
if (match)
|
|
*match = alloc_delete_ref();
|
|
return 0;
|
|
}
|
|
|
|
if (get_oid(name, &oid))
|
|
return -1;
|
|
|
|
if (match) {
|
|
*match = alloc_ref(name);
|
|
oidcpy(&(*match)->new_oid, &oid);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct ref *make_linked_ref(const char *name, struct ref ***tail)
|
|
{
|
|
struct ref *ret = alloc_ref(name);
|
|
tail_link_ref(ret, tail);
|
|
return ret;
|
|
}
|
|
|
|
static char *guess_ref(const char *name, struct ref *peer)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
|
|
const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING,
|
|
NULL, NULL);
|
|
if (!r)
|
|
return NULL;
|
|
|
|
if (starts_with(r, "refs/heads/"))
|
|
strbuf_addstr(&buf, "refs/heads/");
|
|
else if (starts_with(r, "refs/tags/"))
|
|
strbuf_addstr(&buf, "refs/tags/");
|
|
else
|
|
return NULL;
|
|
|
|
strbuf_addstr(&buf, name);
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
static int match_explicit_lhs(struct ref *src,
|
|
struct refspec_item *rs,
|
|
struct ref **match,
|
|
int *allocated_match)
|
|
{
|
|
switch (count_refspec_match(rs->src, src, match)) {
|
|
case 1:
|
|
if (allocated_match)
|
|
*allocated_match = 0;
|
|
return 0;
|
|
case 0:
|
|
/* The source could be in the get_sha1() format
|
|
* not a reference name. :refs/other is a
|
|
* way to delete 'other' ref at the remote end.
|
|
*/
|
|
if (try_explicit_object_name(rs->src, match) < 0)
|
|
return error("src refspec %s does not match any.", rs->src);
|
|
if (allocated_match)
|
|
*allocated_match = 1;
|
|
return 0;
|
|
default:
|
|
return error("src refspec %s matches more than one.", rs->src);
|
|
}
|
|
}
|
|
|
|
static int match_explicit(struct ref *src, struct ref *dst,
|
|
struct ref ***dst_tail,
|
|
struct refspec_item *rs)
|
|
{
|
|
struct ref *matched_src, *matched_dst;
|
|
int allocated_src;
|
|
|
|
const char *dst_value = rs->dst;
|
|
char *dst_guess;
|
|
|
|
if (rs->pattern || rs->matching)
|
|
return 0;
|
|
|
|
matched_src = matched_dst = NULL;
|
|
if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0)
|
|
return -1;
|
|
|
|
if (!dst_value) {
|
|
int flag;
|
|
|
|
dst_value = resolve_ref_unsafe(matched_src->name,
|
|
RESOLVE_REF_READING,
|
|
NULL, &flag);
|
|
if (!dst_value ||
|
|
((flag & REF_ISSYMREF) &&
|
|
!starts_with(dst_value, "refs/heads/")))
|
|
die("%s cannot be resolved to branch.",
|
|
matched_src->name);
|
|
}
|
|
|
|
switch (count_refspec_match(dst_value, dst, &matched_dst)) {
|
|
case 1:
|
|
break;
|
|
case 0:
|
|
if (starts_with(dst_value, "refs/"))
|
|
matched_dst = make_linked_ref(dst_value, dst_tail);
|
|
else if (is_null_oid(&matched_src->new_oid))
|
|
error("unable to delete '%s': remote ref does not exist",
|
|
dst_value);
|
|
else if ((dst_guess = guess_ref(dst_value, matched_src))) {
|
|
matched_dst = make_linked_ref(dst_guess, dst_tail);
|
|
free(dst_guess);
|
|
} else
|
|
error("unable to push to unqualified destination: %s\n"
|
|
"The destination refspec neither matches an "
|
|
"existing ref on the remote nor\n"
|
|
"begins with refs/, and we are unable to "
|
|
"guess a prefix based on the source ref.",
|
|
dst_value);
|
|
break;
|
|
default:
|
|
matched_dst = NULL;
|
|
error("dst refspec %s matches more than one.",
|
|
dst_value);
|
|
break;
|
|
}
|
|
if (!matched_dst)
|
|
return -1;
|
|
if (matched_dst->peer_ref)
|
|
return error("dst ref %s receives from more than one src.",
|
|
matched_dst->name);
|
|
else {
|
|
matched_dst->peer_ref = allocated_src ?
|
|
matched_src :
|
|
copy_ref(matched_src);
|
|
matched_dst->force = rs->force;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int match_explicit_refs(struct ref *src, struct ref *dst,
|
|
struct ref ***dst_tail, struct refspec *rs)
|
|
{
|
|
int i, errs;
|
|
for (i = errs = 0; i < rs->nr; i++)
|
|
errs += match_explicit(src, dst, dst_tail, &rs->items[i]);
|
|
return errs;
|
|
}
|
|
|
|
static char *get_ref_match(const struct refspec *rs, const struct ref *ref,
|
|
int send_mirror, int direction,
|
|
const struct refspec_item **ret_pat)
|
|
{
|
|
const struct refspec_item *pat;
|
|
char *name;
|
|
int i;
|
|
int matching_refs = -1;
|
|
for (i = 0; i < rs->nr; i++) {
|
|
const struct refspec_item *item = &rs->items[i];
|
|
if (item->matching &&
|
|
(matching_refs == -1 || item->force)) {
|
|
matching_refs = i;
|
|
continue;
|
|
}
|
|
|
|
if (item->pattern) {
|
|
const char *dst_side = item->dst ? item->dst : item->src;
|
|
int match;
|
|
if (direction == FROM_SRC)
|
|
match = match_name_with_pattern(item->src, ref->name, dst_side, &name);
|
|
else
|
|
match = match_name_with_pattern(dst_side, ref->name, item->src, &name);
|
|
if (match) {
|
|
matching_refs = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (matching_refs == -1)
|
|
return NULL;
|
|
|
|
pat = &rs->items[matching_refs];
|
|
if (pat->matching) {
|
|
/*
|
|
* "matching refs"; traditionally we pushed everything
|
|
* including refs outside refs/heads/ hierarchy, but
|
|
* that does not make much sense these days.
|
|
*/
|
|
if (!send_mirror && !starts_with(ref->name, "refs/heads/"))
|
|
return NULL;
|
|
name = xstrdup(ref->name);
|
|
}
|
|
if (ret_pat)
|
|
*ret_pat = pat;
|
|
return name;
|
|
}
|
|
|
|
static struct ref **tail_ref(struct ref **head)
|
|
{
|
|
struct ref **tail = head;
|
|
while (*tail)
|
|
tail = &((*tail)->next);
|
|
return tail;
|
|
}
|
|
|
|
struct tips {
|
|
struct commit **tip;
|
|
int nr, alloc;
|
|
};
|
|
|
|
static void add_to_tips(struct tips *tips, const struct object_id *oid)
|
|
{
|
|
struct commit *commit;
|
|
|
|
if (is_null_oid(oid))
|
|
return;
|
|
commit = lookup_commit_reference_gently(the_repository, oid, 1);
|
|
if (!commit || (commit->object.flags & TMP_MARK))
|
|
return;
|
|
commit->object.flags |= TMP_MARK;
|
|
ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc);
|
|
tips->tip[tips->nr++] = commit;
|
|
}
|
|
|
|
static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail)
|
|
{
|
|
struct string_list dst_tag = STRING_LIST_INIT_NODUP;
|
|
struct string_list src_tag = STRING_LIST_INIT_NODUP;
|
|
struct string_list_item *item;
|
|
struct ref *ref;
|
|
struct tips sent_tips;
|
|
|
|
/*
|
|
* Collect everything we know they would have at the end of
|
|
* this push, and collect all tags they have.
|
|
*/
|
|
memset(&sent_tips, 0, sizeof(sent_tips));
|
|
for (ref = *dst; ref; ref = ref->next) {
|
|
if (ref->peer_ref &&
|
|
!is_null_oid(&ref->peer_ref->new_oid))
|
|
add_to_tips(&sent_tips, &ref->peer_ref->new_oid);
|
|
else
|
|
add_to_tips(&sent_tips, &ref->old_oid);
|
|
if (starts_with(ref->name, "refs/tags/"))
|
|
string_list_append(&dst_tag, ref->name);
|
|
}
|
|
clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK);
|
|
|
|
string_list_sort(&dst_tag);
|
|
|
|
/* Collect tags they do not have. */
|
|
for (ref = src; ref; ref = ref->next) {
|
|
if (!starts_with(ref->name, "refs/tags/"))
|
|
continue; /* not a tag */
|
|
if (string_list_has_string(&dst_tag, ref->name))
|
|
continue; /* they already have it */
|
|
if (oid_object_info(the_repository, &ref->new_oid, NULL) != OBJ_TAG)
|
|
continue; /* be conservative */
|
|
item = string_list_append(&src_tag, ref->name);
|
|
item->util = ref;
|
|
}
|
|
string_list_clear(&dst_tag, 0);
|
|
|
|
/*
|
|
* At this point, src_tag lists tags that are missing from
|
|
* dst, and sent_tips lists the tips we are pushing or those
|
|
* that we know they already have. An element in the src_tag
|
|
* that is an ancestor of any of the sent_tips needs to be
|
|
* sent to the other side.
|
|
*/
|
|
if (sent_tips.nr) {
|
|
for_each_string_list_item(item, &src_tag) {
|
|
struct ref *ref = item->util;
|
|
struct ref *dst_ref;
|
|
struct commit *commit;
|
|
|
|
if (is_null_oid(&ref->new_oid))
|
|
continue;
|
|
commit = lookup_commit_reference_gently(the_repository,
|
|
&ref->new_oid,
|
|
1);
|
|
if (!commit)
|
|
/* not pushing a commit, which is not an error */
|
|
continue;
|
|
|
|
/*
|
|
* Is this tag, which they do not have, reachable from
|
|
* any of the commits we are sending?
|
|
*/
|
|
if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
|
|
continue;
|
|
|
|
/* Add it in */
|
|
dst_ref = make_linked_ref(ref->name, dst_tail);
|
|
oidcpy(&dst_ref->new_oid, &ref->new_oid);
|
|
dst_ref->peer_ref = copy_ref(ref);
|
|
}
|
|
}
|
|
string_list_clear(&src_tag, 0);
|
|
free(sent_tips.tip);
|
|
}
|
|
|
|
struct ref *find_ref_by_name(const struct ref *list, const char *name)
|
|
{
|
|
for ( ; list; list = list->next)
|
|
if (!strcmp(list->name, name))
|
|
return (struct ref *)list;
|
|
return NULL;
|
|
}
|
|
|
|
static void prepare_ref_index(struct string_list *ref_index, struct ref *ref)
|
|
{
|
|
for ( ; ref; ref = ref->next)
|
|
string_list_append_nodup(ref_index, ref->name)->util = ref;
|
|
|
|
string_list_sort(ref_index);
|
|
}
|
|
|
|
/*
|
|
* Given only the set of local refs, sanity-check the set of push
|
|
* refspecs. We can't catch all errors that match_push_refs would,
|
|
* but we can catch some errors early before even talking to the
|
|
* remote side.
|
|
*/
|
|
int check_push_refs(struct ref *src, struct refspec *rs)
|
|
{
|
|
int ret = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < rs->nr; i++) {
|
|
struct refspec_item *item = &rs->items[i];
|
|
|
|
if (item->pattern || item->matching)
|
|
continue;
|
|
|
|
ret |= match_explicit_lhs(src, item, NULL, NULL);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Given the set of refs the local repository has, the set of refs the
|
|
* remote repository has, and the refspec used for push, determine
|
|
* what remote refs we will update and with what value by setting
|
|
* peer_ref (which object is being pushed) and force (if the push is
|
|
* forced) in elements of "dst". The function may add new elements to
|
|
* dst (e.g. pushing to a new branch, done in match_explicit_refs).
|
|
*/
|
|
int match_push_refs(struct ref *src, struct ref **dst,
|
|
struct refspec *rs, int flags)
|
|
{
|
|
int send_all = flags & MATCH_REFS_ALL;
|
|
int send_mirror = flags & MATCH_REFS_MIRROR;
|
|
int send_prune = flags & MATCH_REFS_PRUNE;
|
|
int errs;
|
|
struct ref *ref, **dst_tail = tail_ref(dst);
|
|
struct string_list dst_ref_index = STRING_LIST_INIT_NODUP;
|
|
|
|
/* If no refspec is provided, use the default ":" */
|
|
if (!rs->nr)
|
|
refspec_append(rs, ":");
|
|
|
|
errs = match_explicit_refs(src, *dst, &dst_tail, rs);
|
|
|
|
/* pick the remainder */
|
|
for (ref = src; ref; ref = ref->next) {
|
|
struct string_list_item *dst_item;
|
|
struct ref *dst_peer;
|
|
const struct refspec_item *pat = NULL;
|
|
char *dst_name;
|
|
|
|
dst_name = get_ref_match(rs, ref, send_mirror, FROM_SRC, &pat);
|
|
if (!dst_name)
|
|
continue;
|
|
|
|
if (!dst_ref_index.nr)
|
|
prepare_ref_index(&dst_ref_index, *dst);
|
|
|
|
dst_item = string_list_lookup(&dst_ref_index, dst_name);
|
|
dst_peer = dst_item ? dst_item->util : NULL;
|
|
if (dst_peer) {
|
|
if (dst_peer->peer_ref)
|
|
/* We're already sending something to this ref. */
|
|
goto free_name;
|
|
} else {
|
|
if (pat->matching && !(send_all || send_mirror))
|
|
/*
|
|
* Remote doesn't have it, and we have no
|
|
* explicit pattern, and we don't have
|
|
* --all or --mirror.
|
|
*/
|
|
goto free_name;
|
|
|
|
/* Create a new one and link it */
|
|
dst_peer = make_linked_ref(dst_name, &dst_tail);
|
|
oidcpy(&dst_peer->new_oid, &ref->new_oid);
|
|
string_list_insert(&dst_ref_index,
|
|
dst_peer->name)->util = dst_peer;
|
|
}
|
|
dst_peer->peer_ref = copy_ref(ref);
|
|
dst_peer->force = pat->force;
|
|
free_name:
|
|
free(dst_name);
|
|
}
|
|
|
|
string_list_clear(&dst_ref_index, 0);
|
|
|
|
if (flags & MATCH_REFS_FOLLOW_TAGS)
|
|
add_missing_tags(src, dst, &dst_tail);
|
|
|
|
if (send_prune) {
|
|
struct string_list src_ref_index = STRING_LIST_INIT_NODUP;
|
|
/* check for missing refs on the remote */
|
|
for (ref = *dst; ref; ref = ref->next) {
|
|
char *src_name;
|
|
|
|
if (ref->peer_ref)
|
|
/* We're already sending something to this ref. */
|
|
continue;
|
|
|
|
src_name = get_ref_match(rs, ref, send_mirror, FROM_DST, NULL);
|
|
if (src_name) {
|
|
if (!src_ref_index.nr)
|
|
prepare_ref_index(&src_ref_index, src);
|
|
if (!string_list_has_string(&src_ref_index,
|
|
src_name))
|
|
ref->peer_ref = alloc_delete_ref();
|
|
free(src_name);
|
|
}
|
|
}
|
|
string_list_clear(&src_ref_index, 0);
|
|
}
|
|
|
|
if (errs)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
|
|
int force_update)
|
|
{
|
|
struct ref *ref;
|
|
|
|
for (ref = remote_refs; ref; ref = ref->next) {
|
|
int force_ref_update = ref->force || force_update;
|
|
int reject_reason = 0;
|
|
|
|
if (ref->peer_ref)
|
|
oidcpy(&ref->new_oid, &ref->peer_ref->new_oid);
|
|
else if (!send_mirror)
|
|
continue;
|
|
|
|
ref->deletion = is_null_oid(&ref->new_oid);
|
|
if (!ref->deletion &&
|
|
oideq(&ref->old_oid, &ref->new_oid)) {
|
|
ref->status = REF_STATUS_UPTODATE;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If the remote ref has moved and is now different
|
|
* from what we expect, reject any push.
|
|
*
|
|
* It also is an error if the user told us to check
|
|
* with the remote-tracking branch to find the value
|
|
* to expect, but we did not have such a tracking
|
|
* branch.
|
|
*/
|
|
if (ref->expect_old_sha1) {
|
|
if (!oideq(&ref->old_oid, &ref->old_oid_expect))
|
|
reject_reason = REF_STATUS_REJECT_STALE;
|
|
else
|
|
/* If the ref isn't stale then force the update. */
|
|
force_ref_update = 1;
|
|
}
|
|
|
|
/*
|
|
* If the update isn't already rejected then check
|
|
* the usual "must fast-forward" rules.
|
|
*
|
|
* Decide whether an individual refspec A:B can be
|
|
* pushed. The push will succeed if any of the
|
|
* following are true:
|
|
*
|
|
* (1) the remote reference B does not exist
|
|
*
|
|
* (2) the remote reference B is being removed (i.e.,
|
|
* pushing :B where no source is specified)
|
|
*
|
|
* (3) the destination is not under refs/tags/, and
|
|
* if the old and new value is a commit, the new
|
|
* is a descendant of the old.
|
|
*
|
|
* (4) it is forced using the +A:B notation, or by
|
|
* passing the --force argument
|
|
*/
|
|
|
|
if (!reject_reason && !ref->deletion && !is_null_oid(&ref->old_oid)) {
|
|
if (starts_with(ref->name, "refs/tags/"))
|
|
reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS;
|
|
else if (!has_object_file(&ref->old_oid))
|
|
reject_reason = REF_STATUS_REJECT_FETCH_FIRST;
|
|
else if (!lookup_commit_reference_gently(the_repository, &ref->old_oid, 1) ||
|
|
!lookup_commit_reference_gently(the_repository, &ref->new_oid, 1))
|
|
reject_reason = REF_STATUS_REJECT_NEEDS_FORCE;
|
|
else if (!ref_newer(&ref->new_oid, &ref->old_oid))
|
|
reject_reason = REF_STATUS_REJECT_NONFASTFORWARD;
|
|
}
|
|
|
|
/*
|
|
* "--force" will defeat any rejection implemented
|
|
* by the rules above.
|
|
*/
|
|
if (!force_ref_update)
|
|
ref->status = reject_reason;
|
|
else if (reject_reason)
|
|
ref->forced_update = 1;
|
|
}
|
|
}
|
|
|
|
static void set_merge(struct branch *ret)
|
|
{
|
|
struct remote *remote;
|
|
char *ref;
|
|
struct object_id oid;
|
|
int i;
|
|
|
|
if (!ret)
|
|
return; /* no branch */
|
|
if (ret->merge)
|
|
return; /* already run */
|
|
if (!ret->remote_name || !ret->merge_nr) {
|
|
/*
|
|
* no merge config; let's make sure we don't confuse callers
|
|
* with a non-zero merge_nr but a NULL merge
|
|
*/
|
|
ret->merge_nr = 0;
|
|
return;
|
|
}
|
|
|
|
remote = remote_get(ret->remote_name);
|
|
|
|
ret->merge = xcalloc(ret->merge_nr, sizeof(*ret->merge));
|
|
for (i = 0; i < ret->merge_nr; i++) {
|
|
ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
|
|
ret->merge[i]->src = xstrdup(ret->merge_name[i]);
|
|
if (!remote_find_tracking(remote, ret->merge[i]) ||
|
|
strcmp(ret->remote_name, "."))
|
|
continue;
|
|
if (dwim_ref(ret->merge_name[i], strlen(ret->merge_name[i]),
|
|
&oid, &ref) == 1)
|
|
ret->merge[i]->dst = ref;
|
|
else
|
|
ret->merge[i]->dst = xstrdup(ret->merge_name[i]);
|
|
}
|
|
}
|
|
|
|
struct branch *branch_get(const char *name)
|
|
{
|
|
struct branch *ret;
|
|
|
|
read_config();
|
|
if (!name || !*name || !strcmp(name, "HEAD"))
|
|
ret = current_branch;
|
|
else
|
|
ret = make_branch(name, 0);
|
|
set_merge(ret);
|
|
return ret;
|
|
}
|
|
|
|
int branch_has_merge_config(struct branch *branch)
|
|
{
|
|
return branch && !!branch->merge;
|
|
}
|
|
|
|
int branch_merge_matches(struct branch *branch,
|
|
int i,
|
|
const char *refname)
|
|
{
|
|
if (!branch || i < 0 || i >= branch->merge_nr)
|
|
return 0;
|
|
return refname_match(branch->merge[i]->src, refname);
|
|
}
|
|
|
|
__attribute__((format (printf,2,3)))
|
|
static const char *error_buf(struct strbuf *err, const char *fmt, ...)
|
|
{
|
|
if (err) {
|
|
va_list ap;
|
|
va_start(ap, fmt);
|
|
strbuf_vaddf(err, fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
const char *branch_get_upstream(struct branch *branch, struct strbuf *err)
|
|
{
|
|
if (!branch)
|
|
return error_buf(err, _("HEAD does not point to a branch"));
|
|
|
|
if (!branch->merge || !branch->merge[0]) {
|
|
/*
|
|
* no merge config; is it because the user didn't define any,
|
|
* or because it is not a real branch, and get_branch
|
|
* auto-vivified it?
|
|
*/
|
|
if (!ref_exists(branch->refname))
|
|
return error_buf(err, _("no such branch: '%s'"),
|
|
branch->name);
|
|
return error_buf(err,
|
|
_("no upstream configured for branch '%s'"),
|
|
branch->name);
|
|
}
|
|
|
|
if (!branch->merge[0]->dst)
|
|
return error_buf(err,
|
|
_("upstream branch '%s' not stored as a remote-tracking branch"),
|
|
branch->merge[0]->src);
|
|
|
|
return branch->merge[0]->dst;
|
|
}
|
|
|
|
static const char *tracking_for_push_dest(struct remote *remote,
|
|
const char *refname,
|
|
struct strbuf *err)
|
|
{
|
|
char *ret;
|
|
|
|
ret = apply_refspecs(&remote->fetch, refname);
|
|
if (!ret)
|
|
return error_buf(err,
|
|
_("push destination '%s' on remote '%s' has no local tracking branch"),
|
|
refname, remote->name);
|
|
return ret;
|
|
}
|
|
|
|
static const char *branch_get_push_1(struct branch *branch, struct strbuf *err)
|
|
{
|
|
struct remote *remote;
|
|
|
|
remote = remote_get(pushremote_for_branch(branch, NULL));
|
|
if (!remote)
|
|
return error_buf(err,
|
|
_("branch '%s' has no remote for pushing"),
|
|
branch->name);
|
|
|
|
if (remote->push.nr) {
|
|
char *dst;
|
|
const char *ret;
|
|
|
|
dst = apply_refspecs(&remote->push, branch->refname);
|
|
if (!dst)
|
|
return error_buf(err,
|
|
_("push refspecs for '%s' do not include '%s'"),
|
|
remote->name, branch->name);
|
|
|
|
ret = tracking_for_push_dest(remote, dst, err);
|
|
free(dst);
|
|
return ret;
|
|
}
|
|
|
|
if (remote->mirror)
|
|
return tracking_for_push_dest(remote, branch->refname, err);
|
|
|
|
switch (push_default) {
|
|
case PUSH_DEFAULT_NOTHING:
|
|
return error_buf(err, _("push has no destination (push.default is 'nothing')"));
|
|
|
|
case PUSH_DEFAULT_MATCHING:
|
|
case PUSH_DEFAULT_CURRENT:
|
|
return tracking_for_push_dest(remote, branch->refname, err);
|
|
|
|
case PUSH_DEFAULT_UPSTREAM:
|
|
return branch_get_upstream(branch, err);
|
|
|
|
case PUSH_DEFAULT_UNSPECIFIED:
|
|
case PUSH_DEFAULT_SIMPLE:
|
|
{
|
|
const char *up, *cur;
|
|
|
|
up = branch_get_upstream(branch, err);
|
|
if (!up)
|
|
return NULL;
|
|
cur = tracking_for_push_dest(remote, branch->refname, err);
|
|
if (!cur)
|
|
return NULL;
|
|
if (strcmp(cur, up))
|
|
return error_buf(err,
|
|
_("cannot resolve 'simple' push to a single destination"));
|
|
return cur;
|
|
}
|
|
}
|
|
|
|
BUG("unhandled push situation");
|
|
}
|
|
|
|
const char *branch_get_push(struct branch *branch, struct strbuf *err)
|
|
{
|
|
if (!branch)
|
|
return error_buf(err, _("HEAD does not point to a branch"));
|
|
|
|
if (!branch->push_tracking_ref)
|
|
branch->push_tracking_ref = branch_get_push_1(branch, err);
|
|
return branch->push_tracking_ref;
|
|
}
|
|
|
|
static int ignore_symref_update(const char *refname)
|
|
{
|
|
int flag;
|
|
|
|
if (!resolve_ref_unsafe(refname, 0, NULL, &flag))
|
|
return 0; /* non-existing refs are OK */
|
|
return (flag & REF_ISSYMREF);
|
|
}
|
|
|
|
/*
|
|
* Create and return a list of (struct ref) consisting of copies of
|
|
* each remote_ref that matches refspec. refspec must be a pattern.
|
|
* Fill in the copies' peer_ref to describe the local tracking refs to
|
|
* which they map. Omit any references that would map to an existing
|
|
* local symbolic ref.
|
|
*/
|
|
static struct ref *get_expanded_map(const struct ref *remote_refs,
|
|
const struct refspec_item *refspec)
|
|
{
|
|
const struct ref *ref;
|
|
struct ref *ret = NULL;
|
|
struct ref **tail = &ret;
|
|
|
|
for (ref = remote_refs; ref; ref = ref->next) {
|
|
char *expn_name = NULL;
|
|
|
|
if (strchr(ref->name, '^'))
|
|
continue; /* a dereference item */
|
|
if (match_name_with_pattern(refspec->src, ref->name,
|
|
refspec->dst, &expn_name) &&
|
|
!ignore_symref_update(expn_name)) {
|
|
struct ref *cpy = copy_ref(ref);
|
|
|
|
cpy->peer_ref = alloc_ref(expn_name);
|
|
if (refspec->force)
|
|
cpy->peer_ref->force = 1;
|
|
*tail = cpy;
|
|
tail = &cpy->next;
|
|
}
|
|
free(expn_name);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
|
|
{
|
|
const struct ref *ref;
|
|
const struct ref *best_match = NULL;
|
|
int best_score = 0;
|
|
|
|
for (ref = refs; ref; ref = ref->next) {
|
|
int score = refname_match(name, ref->name);
|
|
|
|
if (best_score < score) {
|
|
best_match = ref;
|
|
best_score = score;
|
|
}
|
|
}
|
|
return best_match;
|
|
}
|
|
|
|
struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
|
|
{
|
|
const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
|
|
|
|
if (!ref)
|
|
return NULL;
|
|
|
|
return copy_ref(ref);
|
|
}
|
|
|
|
static struct ref *get_local_ref(const char *name)
|
|
{
|
|
if (!name || name[0] == '\0')
|
|
return NULL;
|
|
|
|
if (starts_with(name, "refs/"))
|
|
return alloc_ref(name);
|
|
|
|
if (starts_with(name, "heads/") ||
|
|
starts_with(name, "tags/") ||
|
|
starts_with(name, "remotes/"))
|
|
return alloc_ref_with_prefix("refs/", 5, name);
|
|
|
|
return alloc_ref_with_prefix("refs/heads/", 11, name);
|
|
}
|
|
|
|
int get_fetch_map(const struct ref *remote_refs,
|
|
const struct refspec_item *refspec,
|
|
struct ref ***tail,
|
|
int missing_ok)
|
|
{
|
|
struct ref *ref_map, **rmp;
|
|
|
|
if (refspec->pattern) {
|
|
ref_map = get_expanded_map(remote_refs, refspec);
|
|
} else {
|
|
const char *name = refspec->src[0] ? refspec->src : "HEAD";
|
|
|
|
if (refspec->exact_sha1) {
|
|
ref_map = alloc_ref(name);
|
|
get_oid_hex(name, &ref_map->old_oid);
|
|
ref_map->exact_oid = 1;
|
|
} else {
|
|
ref_map = get_remote_ref(remote_refs, name);
|
|
}
|
|
if (!missing_ok && !ref_map)
|
|
die("Couldn't find remote ref %s", name);
|
|
if (ref_map) {
|
|
ref_map->peer_ref = get_local_ref(refspec->dst);
|
|
if (ref_map->peer_ref && refspec->force)
|
|
ref_map->peer_ref->force = 1;
|
|
}
|
|
}
|
|
|
|
for (rmp = &ref_map; *rmp; ) {
|
|
if ((*rmp)->peer_ref) {
|
|
if (!starts_with((*rmp)->peer_ref->name, "refs/") ||
|
|
check_refname_format((*rmp)->peer_ref->name, 0)) {
|
|
struct ref *ignore = *rmp;
|
|
error("* Ignoring funny ref '%s' locally",
|
|
(*rmp)->peer_ref->name);
|
|
*rmp = (*rmp)->next;
|
|
free(ignore->peer_ref);
|
|
free(ignore);
|
|
continue;
|
|
}
|
|
}
|
|
rmp = &((*rmp)->next);
|
|
}
|
|
|
|
if (ref_map)
|
|
tail_link_ref(ref_map, tail);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int resolve_remote_symref(struct ref *ref, struct ref *list)
|
|
{
|
|
if (!ref->symref)
|
|
return 0;
|
|
for (; list; list = list->next)
|
|
if (!strcmp(ref->symref, list->name)) {
|
|
oidcpy(&ref->old_oid, &list->old_oid);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Lookup the upstream branch for the given branch and if present, optionally
|
|
* compute the commit ahead/behind values for the pair.
|
|
*
|
|
* If abf is AHEAD_BEHIND_FULL, compute the full ahead/behind and return the
|
|
* counts in *num_ours and *num_theirs. If abf is AHEAD_BEHIND_QUICK, skip
|
|
* the (potentially expensive) a/b computation (*num_ours and *num_theirs are
|
|
* set to zero).
|
|
*
|
|
* The name of the upstream branch (or NULL if no upstream is defined) is
|
|
* returned via *upstream_name, if it is not itself NULL.
|
|
*
|
|
* Returns -1 if num_ours and num_theirs could not be filled in (e.g., no
|
|
* upstream defined, or ref does not exist). Returns 0 if the commits are
|
|
* identical. Returns 1 if commits are different.
|
|
*/
|
|
int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs,
|
|
const char **upstream_name, enum ahead_behind_flags abf)
|
|
{
|
|
struct object_id oid;
|
|
struct commit *ours, *theirs;
|
|
struct rev_info revs;
|
|
const char *base;
|
|
struct argv_array argv = ARGV_ARRAY_INIT;
|
|
|
|
/* Cannot stat unless we are marked to build on top of somebody else. */
|
|
base = branch_get_upstream(branch, NULL);
|
|
if (upstream_name)
|
|
*upstream_name = base;
|
|
if (!base)
|
|
return -1;
|
|
|
|
/* Cannot stat if what we used to build on no longer exists */
|
|
if (read_ref(base, &oid))
|
|
return -1;
|
|
theirs = lookup_commit_reference(the_repository, &oid);
|
|
if (!theirs)
|
|
return -1;
|
|
|
|
if (read_ref(branch->refname, &oid))
|
|
return -1;
|
|
ours = lookup_commit_reference(the_repository, &oid);
|
|
if (!ours)
|
|
return -1;
|
|
|
|
*num_theirs = *num_ours = 0;
|
|
|
|
/* are we the same? */
|
|
if (theirs == ours)
|
|
return 0;
|
|
if (abf == AHEAD_BEHIND_QUICK)
|
|
return 1;
|
|
if (abf != AHEAD_BEHIND_FULL)
|
|
BUG("stat_tracking_info: invalid abf '%d'", abf);
|
|
|
|
/* Run "rev-list --left-right ours...theirs" internally... */
|
|
argv_array_push(&argv, ""); /* ignored */
|
|
argv_array_push(&argv, "--left-right");
|
|
argv_array_pushf(&argv, "%s...%s",
|
|
oid_to_hex(&ours->object.oid),
|
|
oid_to_hex(&theirs->object.oid));
|
|
argv_array_push(&argv, "--");
|
|
|
|
repo_init_revisions(the_repository, &revs, NULL);
|
|
setup_revisions(argv.argc, argv.argv, &revs, NULL);
|
|
if (prepare_revision_walk(&revs))
|
|
die("revision walk setup failed");
|
|
|
|
/* ... and count the commits on each side. */
|
|
while (1) {
|
|
struct commit *c = get_revision(&revs);
|
|
if (!c)
|
|
break;
|
|
if (c->object.flags & SYMMETRIC_LEFT)
|
|
(*num_ours)++;
|
|
else
|
|
(*num_theirs)++;
|
|
}
|
|
|
|
/* clear object flags smudged by the above traversal */
|
|
clear_commit_marks(ours, ALL_REV_FLAGS);
|
|
clear_commit_marks(theirs, ALL_REV_FLAGS);
|
|
|
|
argv_array_clear(&argv);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Return true when there is anything to report, otherwise false.
|
|
*/
|
|
int format_tracking_info(struct branch *branch, struct strbuf *sb,
|
|
enum ahead_behind_flags abf)
|
|
{
|
|
int ours, theirs, sti;
|
|
const char *full_base;
|
|
char *base;
|
|
int upstream_is_gone = 0;
|
|
|
|
sti = stat_tracking_info(branch, &ours, &theirs, &full_base, abf);
|
|
if (sti < 0) {
|
|
if (!full_base)
|
|
return 0;
|
|
upstream_is_gone = 1;
|
|
}
|
|
|
|
base = shorten_unambiguous_ref(full_base, 0);
|
|
if (upstream_is_gone) {
|
|
strbuf_addf(sb,
|
|
_("Your branch is based on '%s', but the upstream is gone.\n"),
|
|
base);
|
|
if (advice_status_hints)
|
|
strbuf_addstr(sb,
|
|
_(" (use \"git branch --unset-upstream\" to fixup)\n"));
|
|
} else if (!sti) {
|
|
strbuf_addf(sb,
|
|
_("Your branch is up to date with '%s'.\n"),
|
|
base);
|
|
} else if (abf == AHEAD_BEHIND_QUICK) {
|
|
strbuf_addf(sb,
|
|
_("Your branch and '%s' refer to different commits.\n"),
|
|
base);
|
|
if (advice_status_hints)
|
|
strbuf_addf(sb, _(" (use \"%s\" for details)\n"),
|
|
"git status --ahead-behind");
|
|
} else if (!theirs) {
|
|
strbuf_addf(sb,
|
|
Q_("Your branch is ahead of '%s' by %d commit.\n",
|
|
"Your branch is ahead of '%s' by %d commits.\n",
|
|
ours),
|
|
base, ours);
|
|
if (advice_status_hints)
|
|
strbuf_addstr(sb,
|
|
_(" (use \"git push\" to publish your local commits)\n"));
|
|
} else if (!ours) {
|
|
strbuf_addf(sb,
|
|
Q_("Your branch is behind '%s' by %d commit, "
|
|
"and can be fast-forwarded.\n",
|
|
"Your branch is behind '%s' by %d commits, "
|
|
"and can be fast-forwarded.\n",
|
|
theirs),
|
|
base, theirs);
|
|
if (advice_status_hints)
|
|
strbuf_addstr(sb,
|
|
_(" (use \"git pull\" to update your local branch)\n"));
|
|
} else {
|
|
strbuf_addf(sb,
|
|
Q_("Your branch and '%s' have diverged,\n"
|
|
"and have %d and %d different commit each, "
|
|
"respectively.\n",
|
|
"Your branch and '%s' have diverged,\n"
|
|
"and have %d and %d different commits each, "
|
|
"respectively.\n",
|
|
ours + theirs),
|
|
base, ours, theirs);
|
|
if (advice_status_hints)
|
|
strbuf_addstr(sb,
|
|
_(" (use \"git pull\" to merge the remote branch into yours)\n"));
|
|
}
|
|
free(base);
|
|
return 1;
|
|
}
|
|
|
|
static int one_local_ref(const char *refname, const struct object_id *oid,
|
|
int flag, void *cb_data)
|
|
{
|
|
struct ref ***local_tail = cb_data;
|
|
struct ref *ref;
|
|
|
|
/* we already know it starts with refs/ to get here */
|
|
if (check_refname_format(refname + 5, 0))
|
|
return 0;
|
|
|
|
ref = alloc_ref(refname);
|
|
oidcpy(&ref->new_oid, oid);
|
|
**local_tail = ref;
|
|
*local_tail = &ref->next;
|
|
return 0;
|
|
}
|
|
|
|
struct ref *get_local_heads(void)
|
|
{
|
|
struct ref *local_refs = NULL, **local_tail = &local_refs;
|
|
|
|
for_each_ref(one_local_ref, &local_tail);
|
|
return local_refs;
|
|
}
|
|
|
|
struct ref *guess_remote_head(const struct ref *head,
|
|
const struct ref *refs,
|
|
int all)
|
|
{
|
|
const struct ref *r;
|
|
struct ref *list = NULL;
|
|
struct ref **tail = &list;
|
|
|
|
if (!head)
|
|
return NULL;
|
|
|
|
/*
|
|
* Some transports support directly peeking at
|
|
* where HEAD points; if that is the case, then
|
|
* we don't have to guess.
|
|
*/
|
|
if (head->symref)
|
|
return copy_ref(find_ref_by_name(refs, head->symref));
|
|
|
|
/* If refs/heads/master could be right, it is. */
|
|
if (!all) {
|
|
r = find_ref_by_name(refs, "refs/heads/master");
|
|
if (r && oideq(&r->old_oid, &head->old_oid))
|
|
return copy_ref(r);
|
|
}
|
|
|
|
/* Look for another ref that points there */
|
|
for (r = refs; r; r = r->next) {
|
|
if (r != head &&
|
|
starts_with(r->name, "refs/heads/") &&
|
|
oideq(&r->old_oid, &head->old_oid)) {
|
|
*tail = copy_ref(r);
|
|
tail = &((*tail)->next);
|
|
if (!all)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
struct stale_heads_info {
|
|
struct string_list *ref_names;
|
|
struct ref **stale_refs_tail;
|
|
struct refspec *rs;
|
|
};
|
|
|
|
static int get_stale_heads_cb(const char *refname, const struct object_id *oid,
|
|
int flags, void *cb_data)
|
|
{
|
|
struct stale_heads_info *info = cb_data;
|
|
struct string_list matches = STRING_LIST_INIT_DUP;
|
|
struct refspec_item query;
|
|
int i, stale = 1;
|
|
memset(&query, 0, sizeof(struct refspec_item));
|
|
query.dst = (char *)refname;
|
|
|
|
query_refspecs_multiple(info->rs, &query, &matches);
|
|
if (matches.nr == 0)
|
|
goto clean_exit; /* No matches */
|
|
|
|
/*
|
|
* If we did find a suitable refspec and it's not a symref and
|
|
* it's not in the list of refs that currently exist in that
|
|
* remote, we consider it to be stale. In order to deal with
|
|
* overlapping refspecs, we need to go over all of the
|
|
* matching refs.
|
|
*/
|
|
if (flags & REF_ISSYMREF)
|
|
goto clean_exit;
|
|
|
|
for (i = 0; stale && i < matches.nr; i++)
|
|
if (string_list_has_string(info->ref_names, matches.items[i].string))
|
|
stale = 0;
|
|
|
|
if (stale) {
|
|
struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
|
|
oidcpy(&ref->new_oid, oid);
|
|
}
|
|
|
|
clean_exit:
|
|
string_list_clear(&matches, 0);
|
|
return 0;
|
|
}
|
|
|
|
struct ref *get_stale_heads(struct refspec *rs, struct ref *fetch_map)
|
|
{
|
|
struct ref *ref, *stale_refs = NULL;
|
|
struct string_list ref_names = STRING_LIST_INIT_NODUP;
|
|
struct stale_heads_info info;
|
|
|
|
info.ref_names = &ref_names;
|
|
info.stale_refs_tail = &stale_refs;
|
|
info.rs = rs;
|
|
for (ref = fetch_map; ref; ref = ref->next)
|
|
string_list_append(&ref_names, ref->name);
|
|
string_list_sort(&ref_names);
|
|
for_each_ref(get_stale_heads_cb, &info);
|
|
string_list_clear(&ref_names, 0);
|
|
return stale_refs;
|
|
}
|
|
|
|
/*
|
|
* Compare-and-swap
|
|
*/
|
|
static void clear_cas_option(struct push_cas_option *cas)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < cas->nr; i++)
|
|
free(cas->entry[i].refname);
|
|
free(cas->entry);
|
|
memset(cas, 0, sizeof(*cas));
|
|
}
|
|
|
|
static struct push_cas *add_cas_entry(struct push_cas_option *cas,
|
|
const char *refname,
|
|
size_t refnamelen)
|
|
{
|
|
struct push_cas *entry;
|
|
ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc);
|
|
entry = &cas->entry[cas->nr++];
|
|
memset(entry, 0, sizeof(*entry));
|
|
entry->refname = xmemdupz(refname, refnamelen);
|
|
return entry;
|
|
}
|
|
|
|
static int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset)
|
|
{
|
|
const char *colon;
|
|
struct push_cas *entry;
|
|
|
|
if (unset) {
|
|
/* "--no-<option>" */
|
|
clear_cas_option(cas);
|
|
return 0;
|
|
}
|
|
|
|
if (!arg) {
|
|
/* just "--<option>" */
|
|
cas->use_tracking_for_rest = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* "--<option>=refname" or "--<option>=refname:value" */
|
|
colon = strchrnul(arg, ':');
|
|
entry = add_cas_entry(cas, arg, colon - arg);
|
|
if (!*colon)
|
|
entry->use_tracking = 1;
|
|
else if (!colon[1])
|
|
oidclr(&entry->expect);
|
|
else if (get_oid(colon + 1, &entry->expect))
|
|
return error("cannot parse expected object name '%s'", colon + 1);
|
|
return 0;
|
|
}
|
|
|
|
int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
return parse_push_cas_option(opt->value, arg, unset);
|
|
}
|
|
|
|
int is_empty_cas(const struct push_cas_option *cas)
|
|
{
|
|
return !cas->use_tracking_for_rest && !cas->nr;
|
|
}
|
|
|
|
/*
|
|
* Look at remote.fetch refspec and see if we have a remote
|
|
* tracking branch for the refname there. Fill its current
|
|
* value in sha1[].
|
|
* If we cannot do so, return negative to signal an error.
|
|
*/
|
|
static int remote_tracking(struct remote *remote, const char *refname,
|
|
struct object_id *oid)
|
|
{
|
|
char *dst;
|
|
|
|
dst = apply_refspecs(&remote->fetch, refname);
|
|
if (!dst)
|
|
return -1; /* no tracking ref for refname at remote */
|
|
if (read_ref(dst, oid))
|
|
return -1; /* we know what the tracking ref is but we cannot read it */
|
|
return 0;
|
|
}
|
|
|
|
static void apply_cas(struct push_cas_option *cas,
|
|
struct remote *remote,
|
|
struct ref *ref)
|
|
{
|
|
int i;
|
|
|
|
/* Find an explicit --<option>=<name>[:<value>] entry */
|
|
for (i = 0; i < cas->nr; i++) {
|
|
struct push_cas *entry = &cas->entry[i];
|
|
if (!refname_match(entry->refname, ref->name))
|
|
continue;
|
|
ref->expect_old_sha1 = 1;
|
|
if (!entry->use_tracking)
|
|
oidcpy(&ref->old_oid_expect, &entry->expect);
|
|
else if (remote_tracking(remote, ref->name, &ref->old_oid_expect))
|
|
oidclr(&ref->old_oid_expect);
|
|
return;
|
|
}
|
|
|
|
/* Are we using "--<option>" to cover all? */
|
|
if (!cas->use_tracking_for_rest)
|
|
return;
|
|
|
|
ref->expect_old_sha1 = 1;
|
|
if (remote_tracking(remote, ref->name, &ref->old_oid_expect))
|
|
oidclr(&ref->old_oid_expect);
|
|
}
|
|
|
|
void apply_push_cas(struct push_cas_option *cas,
|
|
struct remote *remote,
|
|
struct ref *remote_refs)
|
|
{
|
|
struct ref *ref;
|
|
for (ref = remote_refs; ref; ref = ref->next)
|
|
apply_cas(cas, remote, ref);
|
|
}
|