git/builtin-remote.c
Samuel Tardieu 3000658f7c "remote update": print remote name being fetched from
When the other end has dangling symref, "git fetch" issues an error
message but that is not grave enough to cause the fetch process to fail.
As the result, the user will see something like this:

    $ git remote update
    error: refs/heads/2.0-uobjects points nowhere!

"remote update" used to report which remote it is fetching from, like
this:

    $ git remote update
    Updating core
    Updating matthieu
    error: refs/heads/2.0-uobjects points nowhere!
    Updating origin

This reinstates the message "Updating <name>" in "git remote update".

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-03-11 22:13:16 -07:00

606 lines
15 KiB
C

#include "cache.h"
#include "parse-options.h"
#include "transport.h"
#include "remote.h"
#include "path-list.h"
#include "strbuf.h"
#include "run-command.h"
#include "refs.h"
static const char * const builtin_remote_usage[] = {
"git remote",
"git remote add <name> <url>",
"git remote rm <name>",
"git remote show <name>",
"git remote prune <name>",
"git remote update [group]",
NULL
};
static int verbose;
static inline int postfixcmp(const char *string, const char *postfix)
{
int len1 = strlen(string), len2 = strlen(postfix);
if (len1 < len2)
return 1;
return strcmp(string + len1 - len2, postfix);
}
static inline const char *skip_prefix(const char *name, const char *prefix)
{
return !name ? "" :
prefixcmp(name, prefix) ? name : name + strlen(prefix);
}
static int opt_parse_track(const struct option *opt, const char *arg, int not)
{
struct path_list *list = opt->value;
if (not)
path_list_clear(list, 0);
else
path_list_append(arg, list);
return 0;
}
static int fetch_remote(const char *name)
{
const char *argv[] = { "fetch", name, NULL };
printf("Updating %s\n", name);
if (run_command_v_opt(argv, RUN_GIT_CMD))
return error("Could not fetch %s", name);
return 0;
}
static int add(int argc, const char **argv)
{
int fetch = 0, mirror = 0;
struct path_list track = { NULL, 0, 0 };
const char *master = NULL;
struct remote *remote;
struct strbuf buf, buf2;
const char *name, *url;
int i;
struct option options[] = {
OPT_GROUP("add specific options"),
OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
OPT_CALLBACK('t', "track", &track, "branch",
"branch(es) to track", opt_parse_track),
OPT_STRING('m', "master", &master, "branch", "master branch"),
OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
OPT_END()
};
argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
if (argc < 2)
usage_with_options(builtin_remote_usage, options);
name = argv[0];
url = argv[1];
remote = remote_get(name);
if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
remote->fetch_refspec_nr))
die("remote %s already exists.", name);
strbuf_init(&buf, 0);
strbuf_init(&buf2, 0);
strbuf_addf(&buf, "remote.%s.url", name);
if (git_config_set(buf.buf, url))
return 1;
if (track.nr == 0)
path_list_append("*", &track);
for (i = 0; i < track.nr; i++) {
struct path_list_item *item = track.items + i;
strbuf_reset(&buf);
strbuf_addf(&buf, "remote.%s.fetch", name);
strbuf_reset(&buf2);
if (mirror)
strbuf_addf(&buf2, "refs/%s:refs/%s",
item->path, item->path);
else
strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
item->path, name, item->path);
if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
return 1;
}
if (fetch && fetch_remote(name))
return 1;
if (master) {
strbuf_reset(&buf);
strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
strbuf_reset(&buf2);
strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
if (create_symref(buf.buf, buf2.buf, "remote add"))
return error("Could not setup master '%s'", master);
}
strbuf_release(&buf);
strbuf_release(&buf2);
path_list_clear(&track, 0);
return 0;
}
struct branch_info {
char *remote;
struct path_list merge;
};
static struct path_list branch_list;
static int config_read_branches(const char *key, const char *value)
{
if (!prefixcmp(key, "branch.")) {
char *name;
struct path_list_item *item;
struct branch_info *info;
enum { REMOTE, MERGE } type;
key += 7;
if (!postfixcmp(key, ".remote")) {
name = xstrndup(key, strlen(key) - 7);
type = REMOTE;
} else if (!postfixcmp(key, ".merge")) {
name = xstrndup(key, strlen(key) - 6);
type = MERGE;
} else
return 0;
item = path_list_insert(name, &branch_list);
if (!item->util)
item->util = xcalloc(sizeof(struct branch_info), 1);
info = item->util;
if (type == REMOTE) {
if (info->remote)
warning("more than one branch.%s", key);
info->remote = xstrdup(value);
} else {
char *space = strchr(value, ' ');
value = skip_prefix(value, "refs/heads/");
while (space) {
char *merge;
merge = xstrndup(value, space - value);
path_list_append(merge, &info->merge);
value = skip_prefix(space + 1, "refs/heads/");
space = strchr(value, ' ');
}
path_list_append(xstrdup(value), &info->merge);
}
}
return 0;
}
static void read_branches(void)
{
if (branch_list.nr)
return;
git_config(config_read_branches);
sort_path_list(&branch_list);
}
struct ref_states {
struct remote *remote;
struct strbuf remote_prefix;
struct path_list new, stale, tracked;
};
static int handle_one_branch(const char *refname,
const unsigned char *sha1, int flags, void *cb_data)
{
struct ref_states *states = cb_data;
struct refspec refspec;
memset(&refspec, 0, sizeof(refspec));
refspec.dst = (char *)refname;
if (!remote_find_tracking(states->remote, &refspec)) {
struct path_list_item *item;
const char *name = skip_prefix(refspec.src, "refs/heads/");
if (unsorted_path_list_has_path(&states->tracked, name) ||
unsorted_path_list_has_path(&states->new,
name))
return 0;
item = path_list_append(name, &states->stale);
item->util = xstrdup(refname);
}
return 0;
}
static int get_ref_states(const struct ref *ref, struct ref_states *states)
{
struct ref *fetch_map = NULL, **tail = &fetch_map;
int i;
for (i = 0; i < states->remote->fetch_refspec_nr; i++)
if (get_fetch_map(ref, states->remote->fetch + i, &tail, 1))
die("Could not get fetch map for refspec %s",
states->remote->fetch_refspec[i]);
states->new.strdup_paths = states->tracked.strdup_paths = 1;
for (ref = fetch_map; ref; ref = ref->next) {
struct path_list *target = &states->tracked;
unsigned char sha1[20];
void *util = NULL;
if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
target = &states->new;
else {
target = &states->tracked;
if (hashcmp(sha1, ref->new_sha1))
util = &states;
}
path_list_append(skip_prefix(ref->name, "refs/heads/"),
target)->util = util;
}
free_refs(fetch_map);
strbuf_addf(&states->remote_prefix,
"refs/remotes/%s/", states->remote->name);
for_each_ref(handle_one_branch, states);
sort_path_list(&states->stale);
return 0;
}
struct branches_for_remote {
const char *prefix;
struct path_list *branches;
};
static int add_branch_for_removal(const char *refname,
const unsigned char *sha1, int flags, void *cb_data)
{
struct branches_for_remote *branches = cb_data;
if (!prefixcmp(refname, branches->prefix)) {
struct path_list_item *item;
/* make sure that symrefs are deleted */
if (flags & REF_ISSYMREF)
return unlink(git_path(refname));
item = path_list_append(refname, branches->branches);
item->util = xmalloc(20);
hashcpy(item->util, sha1);
}
return 0;
}
static int remove_branches(struct path_list *branches)
{
int i, result = 0;
for (i = 0; i < branches->nr; i++) {
struct path_list_item *item = branches->items + i;
const char *refname = item->path;
unsigned char *sha1 = item->util;
if (delete_ref(refname, sha1))
result |= error("Could not remove branch %s", refname);
}
return result;
}
static int rm(int argc, const char **argv)
{
struct option options[] = {
OPT_END()
};
struct remote *remote;
struct strbuf buf;
struct path_list branches = { NULL, 0, 0, 1 };
struct branches_for_remote cb_data = { NULL, &branches };
int i;
if (argc != 2)
usage_with_options(builtin_remote_usage, options);
remote = remote_get(argv[1]);
if (!remote)
die("No such remote: %s", argv[1]);
strbuf_init(&buf, 0);
strbuf_addf(&buf, "remote.%s", remote->name);
if (git_config_rename_section(buf.buf, NULL) < 1)
return error("Could not remove config section '%s'", buf.buf);
read_branches();
for (i = 0; i < branch_list.nr; i++) {
struct path_list_item *item = branch_list.items + i;
struct branch_info *info = item->util;
if (info->remote && !strcmp(info->remote, remote->name)) {
const char *keys[] = { "remote", "merge", NULL }, **k;
for (k = keys; *k; k++) {
strbuf_reset(&buf);
strbuf_addf(&buf, "branch.%s.%s",
item->path, *k);
if (git_config_set(buf.buf, NULL)) {
strbuf_release(&buf);
return -1;
}
}
}
}
/*
* We cannot just pass a function to for_each_ref() which deletes
* the branches one by one, since for_each_ref() relies on cached
* refs, which are invalidated when deleting a branch.
*/
strbuf_reset(&buf);
strbuf_addf(&buf, "refs/remotes/%s/", remote->name);
cb_data.prefix = buf.buf;
i = for_each_ref(add_branch_for_removal, &cb_data);
strbuf_release(&buf);
if (!i)
i = remove_branches(&branches);
path_list_clear(&branches, 1);
return i;
}
static void show_list(const char *title, struct path_list *list)
{
int i;
if (!list->nr)
return;
printf(title, list->nr > 1 ? "es" : "");
printf("\n ");
for (i = 0; i < list->nr; i++)
printf("%s%s", i ? " " : "", list->items[i].path);
printf("\n");
}
static int show_or_prune(int argc, const char **argv, int prune)
{
int dry_run = 0, result = 0;
struct option options[] = {
OPT_GROUP("show specific options"),
OPT__DRY_RUN(&dry_run),
OPT_END()
};
struct ref_states states;
argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
if (argc < 1)
usage_with_options(builtin_remote_usage, options);
memset(&states, 0, sizeof(states));
for (; argc; argc--, argv++) {
struct transport *transport;
const struct ref *ref;
struct strbuf buf;
int i, got_states;
states.remote = remote_get(*argv);
if (!states.remote)
return error("No such remote: %s", *argv);
transport = transport_get(NULL, states.remote->url_nr > 0 ?
states.remote->url[0] : NULL);
ref = transport_get_remote_refs(transport);
transport_disconnect(transport);
read_branches();
got_states = get_ref_states(ref, &states);
if (got_states)
result = error("Error getting local info for '%s'",
states.remote->name);
if (prune) {
struct strbuf buf;
int prefix_len;
strbuf_init(&buf, 0);
if (states.remote->fetch_refspec_nr == 1 &&
states.remote->fetch->pattern &&
!strcmp(states.remote->fetch->src,
states.remote->fetch->dst))
/* handle --mirror remote */
strbuf_addstr(&buf, "refs/heads/");
else
strbuf_addf(&buf, "refs/remotes/%s/", *argv);
prefix_len = buf.len;
for (i = 0; i < states.stale.nr; i++) {
strbuf_setlen(&buf, prefix_len);
strbuf_addstr(&buf, states.stale.items[i].path);
result |= delete_ref(buf.buf, NULL);
}
strbuf_release(&buf);
goto cleanup_states;
}
printf("* remote %s\n URL: %s\n", *argv,
states.remote->url_nr > 0 ?
states.remote->url[0] : "(no URL)");
for (i = 0; i < branch_list.nr; i++) {
struct path_list_item *branch = branch_list.items + i;
struct branch_info *info = branch->util;
int j;
if (!info->merge.nr || strcmp(*argv, info->remote))
continue;
printf(" Remote branch%s merged with 'git pull' "
"while on branch %s\n ",
info->merge.nr > 1 ? "es" : "",
branch->path);
for (j = 0; j < info->merge.nr; j++)
printf(" %s", info->merge.items[j].path);
printf("\n");
}
if (got_states)
continue;
strbuf_init(&buf, 0);
strbuf_addf(&buf, " New remote branch%%s (next fetch will "
"store in remotes/%s)", states.remote->name);
show_list(buf.buf, &states.new);
strbuf_release(&buf);
show_list(" Stale tracking branch%s (use 'git remote prune')",
&states.stale);
show_list(" Tracked remote branch%s",
&states.tracked);
if (states.remote->push_refspec_nr) {
printf(" Local branch%s pushed with 'git push'\n ",
states.remote->push_refspec_nr > 1 ?
"es" : "");
for (i = 0; i < states.remote->push_refspec_nr; i++) {
struct refspec *spec = states.remote->push + i;
printf(" %s%s%s%s", spec->force ? "+" : "",
skip_prefix(spec->src, "refs/heads/"),
spec->dst ? ":" : "",
skip_prefix(spec->dst, "refs/heads/"));
}
}
cleanup_states:
/* NEEDSWORK: free remote */
path_list_clear(&states.new, 0);
path_list_clear(&states.stale, 0);
path_list_clear(&states.tracked, 0);
}
return result;
}
static int get_one_remote_for_update(struct remote *remote, void *priv)
{
struct path_list *list = priv;
if (!remote->skip_default_update)
path_list_append(xstrdup(remote->name), list);
return 0;
}
struct remote_group {
const char *name;
struct path_list *list;
} remote_group;
static int get_remote_group(const char *key, const char *value)
{
if (!prefixcmp(key, "remotes.") &&
!strcmp(key + 8, remote_group.name)) {
/* split list by white space */
int space = strcspn(value, " \t\n");
while (*value) {
if (space > 1)
path_list_append(xstrndup(value, space),
remote_group.list);
value += space + (value[space] != '\0');
space = strcspn(value, " \t\n");
}
}
return 0;
}
static int update(int argc, const char **argv)
{
int i, result = 0;
struct path_list list = { NULL, 0, 0, 0 };
static const char *default_argv[] = { NULL, "default", NULL };
if (argc < 2) {
argc = 2;
argv = default_argv;
}
remote_group.list = &list;
for (i = 1; i < argc; i++) {
remote_group.name = argv[i];
result = git_config(get_remote_group);
}
if (!result && !list.nr && argc == 2 && !strcmp(argv[1], "default"))
result = for_each_remote(get_one_remote_for_update, &list);
for (i = 0; i < list.nr; i++)
result |= fetch_remote(list.items[i].path);
/* all names were strdup()ed or strndup()ed */
list.strdup_paths = 1;
path_list_clear(&list, 0);
return result;
}
static int get_one_entry(struct remote *remote, void *priv)
{
struct path_list *list = priv;
path_list_append(remote->name, list)->util = remote->url_nr ?
(void *)remote->url[0] : NULL;
if (remote->url_nr > 1)
warning("Remote %s has more than one URL", remote->name);
return 0;
}
static int show_all(void)
{
struct path_list list = { NULL, 0, 0 };
int result = for_each_remote(get_one_entry, &list);
if (!result) {
int i;
sort_path_list(&list);
for (i = 0; i < list.nr; i++) {
struct path_list_item *item = list.items + i;
printf("%s%s%s\n", item->path,
verbose ? "\t" : "",
verbose && item->util ?
(const char *)item->util : "");
}
}
return result;
}
int cmd_remote(int argc, const char **argv, const char *prefix)
{
struct option options[] = {
OPT__VERBOSE(&verbose),
OPT_END()
};
int result;
argc = parse_options(argc, argv, options, builtin_remote_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (argc < 1)
result = show_all();
else if (!strcmp(argv[0], "add"))
result = add(argc, argv);
else if (!strcmp(argv[0], "rm"))
result = rm(argc, argv);
else if (!strcmp(argv[0], "show"))
result = show_or_prune(argc, argv, 0);
else if (!strcmp(argv[0], "prune"))
result = show_or_prune(argc, argv, 1);
else if (!strcmp(argv[0], "update"))
result = update(argc, argv);
else {
error("Unknown subcommand: %s", argv[0]);
usage_with_options(builtin_remote_usage, options);
}
return result ? 1 : 0;
}