10a6cc8890
When we have a remote-tracking branch named "frotz/nitfol" from a previous fetch, and the upstream now has a branch named "frotz", fetch would fail to remove "frotz/nitfol" with a "git fetch --prune" from the upstream. git would inform the user to use "git remote prune" to fix the problem. Change the way "fetch --prune" works by moving the pruning operation before the fetching operation. This way, instead of warning the user of a conflict, it autmatically fixes it. Signed-off-by: Tom Miller <jackerran@gmail.com> Tested-by: Thomas Rast <tr@thomasrast.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1168 lines
32 KiB
C
1168 lines
32 KiB
C
/*
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* "git fetch"
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*/
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#include "cache.h"
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#include "refs.h"
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#include "commit.h"
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#include "builtin.h"
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#include "string-list.h"
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#include "remote.h"
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#include "transport.h"
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#include "run-command.h"
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#include "parse-options.h"
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#include "sigchain.h"
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#include "transport.h"
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#include "submodule.h"
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#include "connected.h"
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#include "argv-array.h"
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static const char * const builtin_fetch_usage[] = {
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N_("git fetch [<options>] [<repository> [<refspec>...]]"),
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N_("git fetch [<options>] <group>"),
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N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
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N_("git fetch --all [<options>]"),
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NULL
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};
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enum {
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TAGS_UNSET = 0,
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TAGS_DEFAULT = 1,
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TAGS_SET = 2
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};
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static int fetch_prune_config = -1; /* unspecified */
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static int prune = -1; /* unspecified */
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#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
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static int all, append, dry_run, force, keep, multiple, update_head_ok, verbosity;
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static int progress = -1, recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
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static int tags = TAGS_DEFAULT, unshallow;
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static const char *depth;
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static const char *upload_pack;
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static struct strbuf default_rla = STRBUF_INIT;
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static struct transport *gtransport;
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static struct transport *gsecondary;
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static const char *submodule_prefix = "";
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static const char *recurse_submodules_default;
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static int shown_url = 0;
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static int option_parse_recurse_submodules(const struct option *opt,
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const char *arg, int unset)
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{
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if (unset) {
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recurse_submodules = RECURSE_SUBMODULES_OFF;
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} else {
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if (arg)
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recurse_submodules = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
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else
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recurse_submodules = RECURSE_SUBMODULES_ON;
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}
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return 0;
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}
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static int git_fetch_config(const char *k, const char *v, void *cb)
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{
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if (!strcmp(k, "fetch.prune")) {
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fetch_prune_config = git_config_bool(k, v);
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return 0;
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}
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return 0;
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}
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static struct option builtin_fetch_options[] = {
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OPT__VERBOSITY(&verbosity),
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OPT_BOOL(0, "all", &all,
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N_("fetch from all remotes")),
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OPT_BOOL('a', "append", &append,
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N_("append to .git/FETCH_HEAD instead of overwriting")),
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OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
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N_("path to upload pack on remote end")),
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OPT__FORCE(&force, N_("force overwrite of local branch")),
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OPT_BOOL('m', "multiple", &multiple,
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N_("fetch from multiple remotes")),
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OPT_SET_INT('t', "tags", &tags,
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N_("fetch all tags and associated objects"), TAGS_SET),
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OPT_SET_INT('n', NULL, &tags,
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N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
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OPT_BOOL('p', "prune", &prune,
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N_("prune remote-tracking branches no longer on remote")),
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{ OPTION_CALLBACK, 0, "recurse-submodules", NULL, N_("on-demand"),
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N_("control recursive fetching of submodules"),
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PARSE_OPT_OPTARG, option_parse_recurse_submodules },
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OPT_BOOL(0, "dry-run", &dry_run,
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N_("dry run")),
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OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
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OPT_BOOL('u', "update-head-ok", &update_head_ok,
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N_("allow updating of HEAD ref")),
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OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
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OPT_STRING(0, "depth", &depth, N_("depth"),
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N_("deepen history of shallow clone")),
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{ OPTION_SET_INT, 0, "unshallow", &unshallow, NULL,
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N_("convert to a complete repository"),
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PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1 },
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{ OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
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N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
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{ OPTION_STRING, 0, "recurse-submodules-default",
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&recurse_submodules_default, NULL,
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N_("default mode for recursion"), PARSE_OPT_HIDDEN },
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OPT_END()
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};
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static void unlock_pack(void)
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{
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if (gtransport)
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transport_unlock_pack(gtransport);
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if (gsecondary)
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transport_unlock_pack(gsecondary);
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}
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static void unlock_pack_on_signal(int signo)
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{
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unlock_pack();
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sigchain_pop(signo);
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raise(signo);
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}
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static void add_merge_config(struct ref **head,
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const struct ref *remote_refs,
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struct branch *branch,
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struct ref ***tail)
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{
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int i;
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for (i = 0; i < branch->merge_nr; i++) {
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struct ref *rm, **old_tail = *tail;
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struct refspec refspec;
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for (rm = *head; rm; rm = rm->next) {
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if (branch_merge_matches(branch, i, rm->name)) {
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rm->fetch_head_status = FETCH_HEAD_MERGE;
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break;
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}
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}
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if (rm)
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continue;
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/*
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* Not fetched to a remote-tracking branch? We need to fetch
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* it anyway to allow this branch's "branch.$name.merge"
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* to be honored by 'git pull', but we do not have to
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* fail if branch.$name.merge is misconfigured to point
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* at a nonexisting branch. If we were indeed called by
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* 'git pull', it will notice the misconfiguration because
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* there is no entry in the resulting FETCH_HEAD marked
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* for merging.
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*/
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memset(&refspec, 0, sizeof(refspec));
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refspec.src = branch->merge[i]->src;
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get_fetch_map(remote_refs, &refspec, tail, 1);
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for (rm = *old_tail; rm; rm = rm->next)
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rm->fetch_head_status = FETCH_HEAD_MERGE;
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}
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}
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static int add_existing(const char *refname, const unsigned char *sha1,
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int flag, void *cbdata)
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{
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struct string_list *list = (struct string_list *)cbdata;
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struct string_list_item *item = string_list_insert(list, refname);
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item->util = xmalloc(20);
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hashcpy(item->util, sha1);
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return 0;
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}
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static int will_fetch(struct ref **head, const unsigned char *sha1)
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{
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struct ref *rm = *head;
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while (rm) {
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if (!hashcmp(rm->old_sha1, sha1))
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return 1;
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rm = rm->next;
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}
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return 0;
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}
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static void find_non_local_tags(struct transport *transport,
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struct ref **head,
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struct ref ***tail)
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{
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struct string_list existing_refs = STRING_LIST_INIT_DUP;
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struct string_list remote_refs = STRING_LIST_INIT_NODUP;
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const struct ref *ref;
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struct string_list_item *item = NULL;
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for_each_ref(add_existing, &existing_refs);
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for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) {
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if (!starts_with(ref->name, "refs/tags/"))
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continue;
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/*
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* The peeled ref always follows the matching base
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* ref, so if we see a peeled ref that we don't want
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* to fetch then we can mark the ref entry in the list
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* as one to ignore by setting util to NULL.
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*/
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if (ends_with(ref->name, "^{}")) {
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if (item && !has_sha1_file(ref->old_sha1) &&
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!will_fetch(head, ref->old_sha1) &&
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!has_sha1_file(item->util) &&
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!will_fetch(head, item->util))
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item->util = NULL;
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item = NULL;
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continue;
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}
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/*
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* If item is non-NULL here, then we previously saw a
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* ref not followed by a peeled reference, so we need
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* to check if it is a lightweight tag that we want to
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* fetch.
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*/
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if (item && !has_sha1_file(item->util) &&
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!will_fetch(head, item->util))
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item->util = NULL;
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item = NULL;
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/* skip duplicates and refs that we already have */
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if (string_list_has_string(&remote_refs, ref->name) ||
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string_list_has_string(&existing_refs, ref->name))
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continue;
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item = string_list_insert(&remote_refs, ref->name);
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item->util = (void *)ref->old_sha1;
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}
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string_list_clear(&existing_refs, 1);
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/*
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* We may have a final lightweight tag that needs to be
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* checked to see if it needs fetching.
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*/
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if (item && !has_sha1_file(item->util) &&
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!will_fetch(head, item->util))
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item->util = NULL;
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/*
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* For all the tags in the remote_refs string list,
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* add them to the list of refs to be fetched
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*/
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for_each_string_list_item(item, &remote_refs) {
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/* Unless we have already decided to ignore this item... */
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if (item->util)
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{
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struct ref *rm = alloc_ref(item->string);
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rm->peer_ref = alloc_ref(item->string);
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hashcpy(rm->old_sha1, item->util);
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**tail = rm;
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*tail = &rm->next;
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}
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}
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string_list_clear(&remote_refs, 0);
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}
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static struct ref *get_ref_map(struct transport *transport,
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struct refspec *refspecs, int refspec_count,
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int tags, int *autotags)
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{
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int i;
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struct ref *rm;
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struct ref *ref_map = NULL;
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struct ref **tail = &ref_map;
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/* opportunistically-updated references: */
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struct ref *orefs = NULL, **oref_tail = &orefs;
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const struct ref *remote_refs = transport_get_remote_refs(transport);
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if (refspec_count) {
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for (i = 0; i < refspec_count; i++) {
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get_fetch_map(remote_refs, &refspecs[i], &tail, 0);
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if (refspecs[i].dst && refspecs[i].dst[0])
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*autotags = 1;
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}
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/* Merge everything on the command line (but not --tags) */
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for (rm = ref_map; rm; rm = rm->next)
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rm->fetch_head_status = FETCH_HEAD_MERGE;
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/*
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* For any refs that we happen to be fetching via
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* command-line arguments, the destination ref might
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* have been missing or have been different than the
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* remote-tracking ref that would be derived from the
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* configured refspec. In these cases, we want to
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* take the opportunity to update their configured
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* remote-tracking reference. However, we do not want
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* to mention these entries in FETCH_HEAD at all, as
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* they would simply be duplicates of existing
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* entries, so we set them FETCH_HEAD_IGNORE below.
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*
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* We compute these entries now, based only on the
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* refspecs specified on the command line. But we add
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* them to the list following the refspecs resulting
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* from the tags option so that one of the latter,
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* which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
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* by ref_remove_duplicates() in favor of one of these
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* opportunistic entries with FETCH_HEAD_IGNORE.
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*/
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for (i = 0; i < transport->remote->fetch_refspec_nr; i++)
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get_fetch_map(ref_map, &transport->remote->fetch[i],
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&oref_tail, 1);
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if (tags == TAGS_SET)
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get_fetch_map(remote_refs, tag_refspec, &tail, 0);
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} else {
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/* Use the defaults */
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struct remote *remote = transport->remote;
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struct branch *branch = branch_get(NULL);
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int has_merge = branch_has_merge_config(branch);
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if (remote &&
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(remote->fetch_refspec_nr ||
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/* Note: has_merge implies non-NULL branch->remote_name */
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(has_merge && !strcmp(branch->remote_name, remote->name)))) {
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for (i = 0; i < remote->fetch_refspec_nr; i++) {
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get_fetch_map(remote_refs, &remote->fetch[i], &tail, 0);
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if (remote->fetch[i].dst &&
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remote->fetch[i].dst[0])
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*autotags = 1;
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if (!i && !has_merge && ref_map &&
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!remote->fetch[0].pattern)
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ref_map->fetch_head_status = FETCH_HEAD_MERGE;
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}
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/*
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* if the remote we're fetching from is the same
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* as given in branch.<name>.remote, we add the
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* ref given in branch.<name>.merge, too.
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*
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* Note: has_merge implies non-NULL branch->remote_name
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*/
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if (has_merge &&
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!strcmp(branch->remote_name, remote->name))
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add_merge_config(&ref_map, remote_refs, branch, &tail);
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} else {
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ref_map = get_remote_ref(remote_refs, "HEAD");
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if (!ref_map)
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die(_("Couldn't find remote ref HEAD"));
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ref_map->fetch_head_status = FETCH_HEAD_MERGE;
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tail = &ref_map->next;
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}
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}
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if (tags == TAGS_SET)
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/* also fetch all tags */
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get_fetch_map(remote_refs, tag_refspec, &tail, 0);
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else if (tags == TAGS_DEFAULT && *autotags)
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find_non_local_tags(transport, &ref_map, &tail);
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/* Now append any refs to be updated opportunistically: */
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*tail = orefs;
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for (rm = orefs; rm; rm = rm->next) {
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rm->fetch_head_status = FETCH_HEAD_IGNORE;
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tail = &rm->next;
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}
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return ref_remove_duplicates(ref_map);
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}
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#define STORE_REF_ERROR_OTHER 1
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#define STORE_REF_ERROR_DF_CONFLICT 2
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static int s_update_ref(const char *action,
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struct ref *ref,
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int check_old)
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{
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char msg[1024];
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char *rla = getenv("GIT_REFLOG_ACTION");
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static struct ref_lock *lock;
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if (dry_run)
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return 0;
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if (!rla)
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rla = default_rla.buf;
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snprintf(msg, sizeof(msg), "%s: %s", rla, action);
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lock = lock_any_ref_for_update(ref->name,
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check_old ? ref->old_sha1 : NULL,
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0, NULL);
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if (!lock)
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return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
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STORE_REF_ERROR_OTHER;
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if (write_ref_sha1(lock, ref->new_sha1, msg) < 0)
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return errno == ENOTDIR ? STORE_REF_ERROR_DF_CONFLICT :
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STORE_REF_ERROR_OTHER;
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return 0;
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}
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#define REFCOL_WIDTH 10
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static int update_local_ref(struct ref *ref,
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const char *remote,
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const struct ref *remote_ref,
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struct strbuf *display)
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{
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struct commit *current = NULL, *updated;
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enum object_type type;
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struct branch *current_branch = branch_get(NULL);
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const char *pretty_ref = prettify_refname(ref->name);
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type = sha1_object_info(ref->new_sha1, NULL);
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if (type < 0)
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die(_("object %s not found"), sha1_to_hex(ref->new_sha1));
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if (!hashcmp(ref->old_sha1, ref->new_sha1)) {
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if (verbosity > 0)
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strbuf_addf(display, "= %-*s %-*s -> %s",
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TRANSPORT_SUMMARY(_("[up to date]")),
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REFCOL_WIDTH, remote, pretty_ref);
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return 0;
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}
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|
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if (current_branch &&
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!strcmp(ref->name, current_branch->name) &&
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!(update_head_ok || is_bare_repository()) &&
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!is_null_sha1(ref->old_sha1)) {
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/*
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* If this is the head, and it's not okay to update
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* the head, and the old value of the head isn't empty...
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*/
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strbuf_addf(display,
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_("! %-*s %-*s -> %s (can't fetch in current branch)"),
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TRANSPORT_SUMMARY(_("[rejected]")),
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REFCOL_WIDTH, remote, pretty_ref);
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return 1;
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}
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|
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if (!is_null_sha1(ref->old_sha1) &&
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starts_with(ref->name, "refs/tags/")) {
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int r;
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r = s_update_ref("updating tag", ref, 0);
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strbuf_addf(display, "%c %-*s %-*s -> %s%s",
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r ? '!' : '-',
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TRANSPORT_SUMMARY(_("[tag update]")),
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REFCOL_WIDTH, remote, pretty_ref,
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r ? _(" (unable to update local ref)") : "");
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return r;
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}
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current = lookup_commit_reference_gently(ref->old_sha1, 1);
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updated = lookup_commit_reference_gently(ref->new_sha1, 1);
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if (!current || !updated) {
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const char *msg;
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const char *what;
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int r;
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/*
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* Nicely describe the new ref we're fetching.
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* Base this on the remote's ref name, as it's
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* more likely to follow a standard layout.
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*/
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const char *name = remote_ref ? remote_ref->name : "";
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if (starts_with(name, "refs/tags/")) {
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msg = "storing tag";
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what = _("[new tag]");
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} else if (starts_with(name, "refs/heads/")) {
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msg = "storing head";
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what = _("[new branch]");
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} else {
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msg = "storing ref";
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what = _("[new ref]");
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}
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|
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if ((recurse_submodules != RECURSE_SUBMODULES_OFF) &&
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|
(recurse_submodules != RECURSE_SUBMODULES_ON))
|
|
check_for_new_submodule_commits(ref->new_sha1);
|
|
r = s_update_ref(msg, ref, 0);
|
|
strbuf_addf(display, "%c %-*s %-*s -> %s%s",
|
|
r ? '!' : '*',
|
|
TRANSPORT_SUMMARY(what),
|
|
REFCOL_WIDTH, remote, pretty_ref,
|
|
r ? _(" (unable to update local ref)") : "");
|
|
return r;
|
|
}
|
|
|
|
if (in_merge_bases(current, updated)) {
|
|
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);
|
|
strbuf_addf(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);
|
|
strbuf_addf(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 {
|
|
strbuf_addf(display, "! %-*s %-*s -> %s %s",
|
|
TRANSPORT_SUMMARY(_("[rejected]")),
|
|
REFCOL_WIDTH, remote, pretty_ref,
|
|
_("(non-fast-forward)"));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int iterate_ref_map(void *cb_data, unsigned char sha1[20])
|
|
{
|
|
struct ref **rm = cb_data;
|
|
struct ref *ref = *rm;
|
|
|
|
if (!ref)
|
|
return -1; /* end of the list */
|
|
*rm = ref->next;
|
|
hashcpy(sha1, ref->old_sha1);
|
|
return 0;
|
|
}
|
|
|
|
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, rc = 0;
|
|
struct strbuf note = STRBUF_INIT;
|
|
const char *what, *kind;
|
|
struct ref *rm;
|
|
char *url, *filename = dry_run ? "/dev/null" : git_path("FETCH_HEAD");
|
|
int want_status;
|
|
|
|
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");
|
|
|
|
rm = ref_map;
|
|
if (check_everything_connected(iterate_ref_map, 0, &rm)) {
|
|
rc = error(_("%s did not send all necessary objects\n"), url);
|
|
goto abort;
|
|
}
|
|
|
|
/*
|
|
* We do a pass for each fetch_head_status type in their enum order, so
|
|
* merged entries are written before not-for-merge. That lets readers
|
|
* use FETCH_HEAD as a refname to refer to the ref to be merged.
|
|
*/
|
|
for (want_status = FETCH_HEAD_MERGE;
|
|
want_status <= FETCH_HEAD_IGNORE;
|
|
want_status++) {
|
|
for (rm = ref_map; rm; rm = rm->next) {
|
|
struct ref *ref = NULL;
|
|
const char *merge_status_marker = "";
|
|
|
|
commit = lookup_commit_reference_gently(rm->old_sha1, 1);
|
|
if (!commit)
|
|
rm->fetch_head_status = FETCH_HEAD_NOT_FOR_MERGE;
|
|
|
|
if (rm->fetch_head_status != want_status)
|
|
continue;
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
if (!strcmp(rm->name, "HEAD")) {
|
|
kind = "";
|
|
what = "";
|
|
}
|
|
else if (starts_with(rm->name, "refs/heads/")) {
|
|
kind = "branch";
|
|
what = rm->name + 11;
|
|
}
|
|
else if (starts_with(rm->name, "refs/tags/")) {
|
|
kind = "tag";
|
|
what = rm->name + 10;
|
|
}
|
|
else if (starts_with(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;
|
|
|
|
strbuf_reset(¬e);
|
|
if (*what) {
|
|
if (*kind)
|
|
strbuf_addf(¬e, "%s ", kind);
|
|
strbuf_addf(¬e, "'%s' of ", what);
|
|
}
|
|
switch (rm->fetch_head_status) {
|
|
case FETCH_HEAD_NOT_FOR_MERGE:
|
|
merge_status_marker = "not-for-merge";
|
|
/* fall-through */
|
|
case FETCH_HEAD_MERGE:
|
|
fprintf(fp, "%s\t%s\t%s",
|
|
sha1_to_hex(rm->old_sha1),
|
|
merge_status_marker,
|
|
note.buf);
|
|
for (i = 0; i < url_len; ++i)
|
|
if ('\n' == url[i])
|
|
fputs("\\n", fp);
|
|
else
|
|
fputc(url[i], fp);
|
|
fputc('\n', fp);
|
|
break;
|
|
default:
|
|
/* do not write anything to FETCH_HEAD */
|
|
break;
|
|
}
|
|
|
|
strbuf_reset(¬e);
|
|
if (ref) {
|
|
rc |= update_local_ref(ref, what, rm, ¬e);
|
|
free(ref);
|
|
} else
|
|
strbuf_addf(¬e, "* %-*s %-*s -> FETCH_HEAD",
|
|
TRANSPORT_SUMMARY_WIDTH,
|
|
*kind ? kind : "branch",
|
|
REFCOL_WIDTH,
|
|
*what ? what : "HEAD");
|
|
if (note.len) {
|
|
if (verbosity >= 0 && !shown_url) {
|
|
fprintf(stderr, _("From %.*s\n"),
|
|
url_len, url);
|
|
shown_url = 1;
|
|
}
|
|
if (verbosity >= 0)
|
|
fprintf(stderr, " %s\n", note.buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
abort:
|
|
strbuf_release(¬e);
|
|
free(url);
|
|
fclose(fp);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* We would want to bypass the object transfer altogether if
|
|
* everything we are going to fetch already exists and is connected
|
|
* locally.
|
|
*/
|
|
static int quickfetch(struct ref *ref_map)
|
|
{
|
|
struct ref *rm = ref_map;
|
|
|
|
/*
|
|
* 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;
|
|
return check_everything_connected(iterate_ref_map, 1, &rm);
|
|
}
|
|
|
|
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,
|
|
const char *raw_url)
|
|
{
|
|
int url_len, i, result = 0;
|
|
struct ref *ref, *stale_refs = get_stale_heads(refs, ref_count, ref_map);
|
|
char *url;
|
|
const char *dangling_msg = dry_run
|
|
? _(" (%s will become dangling)")
|
|
: _(" (%s has become dangling)");
|
|
|
|
if (raw_url)
|
|
url = transport_anonymize_url(raw_url);
|
|
else
|
|
url = xstrdup("foreign");
|
|
|
|
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;
|
|
|
|
for (ref = stale_refs; ref; ref = ref->next) {
|
|
if (!dry_run)
|
|
result |= delete_ref(ref->name, NULL, 0);
|
|
if (verbosity >= 0 && !shown_url) {
|
|
fprintf(stderr, _("From %.*s\n"), url_len, url);
|
|
shown_url = 1;
|
|
}
|
|
if (verbosity >= 0) {
|
|
fprintf(stderr, " x %-*s %-*s -> %s\n",
|
|
TRANSPORT_SUMMARY(_("[deleted]")),
|
|
REFCOL_WIDTH, _("(none)"), prettify_refname(ref->name));
|
|
warn_dangling_symref(stderr, dangling_msg, ref->name);
|
|
}
|
|
}
|
|
free(url);
|
|
free_refs(stale_refs);
|
|
return result;
|
|
}
|
|
|
|
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 void set_option(struct transport *transport, 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 struct transport *prepare_transport(struct remote *remote)
|
|
{
|
|
struct transport *transport;
|
|
transport = transport_get(remote, NULL);
|
|
transport_set_verbosity(transport, verbosity, progress);
|
|
if (upload_pack)
|
|
set_option(transport, TRANS_OPT_UPLOADPACK, upload_pack);
|
|
if (keep)
|
|
set_option(transport, TRANS_OPT_KEEP, "yes");
|
|
if (depth)
|
|
set_option(transport, TRANS_OPT_DEPTH, depth);
|
|
return transport;
|
|
}
|
|
|
|
static void backfill_tags(struct transport *transport, struct ref *ref_map)
|
|
{
|
|
if (transport->cannot_reuse) {
|
|
gsecondary = prepare_transport(transport->remote);
|
|
transport = gsecondary;
|
|
}
|
|
|
|
transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, NULL);
|
|
transport_set_option(transport, TRANS_OPT_DEPTH, "0");
|
|
fetch_refs(transport, ref_map);
|
|
|
|
if (gsecondary) {
|
|
transport_disconnect(gsecondary);
|
|
gsecondary = NULL;
|
|
}
|
|
}
|
|
|
|
static int do_fetch(struct transport *transport,
|
|
struct refspec *refs, int ref_count)
|
|
{
|
|
struct string_list existing_refs = STRING_LIST_INIT_DUP;
|
|
struct ref *ref_map;
|
|
struct ref *rm;
|
|
int autotags = (transport->remote->fetch_tags == 1);
|
|
int retcode = 0;
|
|
|
|
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) {
|
|
retcode = truncate_fetch_head();
|
|
if (retcode)
|
|
goto cleanup;
|
|
}
|
|
|
|
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) {
|
|
struct string_list_item *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 (prune) {
|
|
/*
|
|
* We only prune based on refspecs specified
|
|
* explicitly (via command line or configuration); we
|
|
* don't care whether --tags was specified.
|
|
*/
|
|
if (ref_count) {
|
|
prune_refs(refs, ref_count, ref_map, transport->url);
|
|
} else {
|
|
prune_refs(transport->remote->fetch,
|
|
transport->remote->fetch_refspec_nr,
|
|
ref_map,
|
|
transport->url);
|
|
}
|
|
}
|
|
if (fetch_refs(transport, ref_map)) {
|
|
free_refs(ref_map);
|
|
retcode = 1;
|
|
goto cleanup;
|
|
}
|
|
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)
|
|
backfill_tags(transport, ref_map);
|
|
free_refs(ref_map);
|
|
}
|
|
|
|
cleanup:
|
|
string_list_clear(&existing_refs, 1);
|
|
return retcode;
|
|
}
|
|
|
|
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 (starts_with(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(struct argv_array *argv)
|
|
{
|
|
if (dry_run)
|
|
argv_array_push(argv, "--dry-run");
|
|
if (prune != -1)
|
|
argv_array_push(argv, prune ? "--prune" : "--no-prune");
|
|
if (update_head_ok)
|
|
argv_array_push(argv, "--update-head-ok");
|
|
if (force)
|
|
argv_array_push(argv, "--force");
|
|
if (keep)
|
|
argv_array_push(argv, "--keep");
|
|
if (recurse_submodules == RECURSE_SUBMODULES_ON)
|
|
argv_array_push(argv, "--recurse-submodules");
|
|
else if (recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)
|
|
argv_array_push(argv, "--recurse-submodules=on-demand");
|
|
if (tags == TAGS_SET)
|
|
argv_array_push(argv, "--tags");
|
|
else if (tags == TAGS_UNSET)
|
|
argv_array_push(argv, "--no-tags");
|
|
if (verbosity >= 2)
|
|
argv_array_push(argv, "-v");
|
|
if (verbosity >= 1)
|
|
argv_array_push(argv, "-v");
|
|
else if (verbosity < 0)
|
|
argv_array_push(argv, "-q");
|
|
|
|
}
|
|
|
|
static int fetch_multiple(struct string_list *list)
|
|
{
|
|
int i, result = 0;
|
|
struct argv_array argv = ARGV_ARRAY_INIT;
|
|
|
|
if (!append && !dry_run) {
|
|
int errcode = truncate_fetch_head();
|
|
if (errcode)
|
|
return errcode;
|
|
}
|
|
|
|
argv_array_pushl(&argv, "fetch", "--append", NULL);
|
|
add_options_to_argv(&argv);
|
|
|
|
for (i = 0; i < list->nr; i++) {
|
|
const char *name = list->items[i].string;
|
|
argv_array_push(&argv, name);
|
|
if (verbosity >= 0)
|
|
printf(_("Fetching %s\n"), name);
|
|
if (run_command_v_opt(argv.argv, RUN_GIT_CMD)) {
|
|
error(_("Could not fetch %s"), name);
|
|
result = 1;
|
|
}
|
|
argv_array_pop(&argv);
|
|
}
|
|
|
|
argv_array_clear(&argv);
|
|
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."));
|
|
|
|
gtransport = prepare_transport(remote);
|
|
|
|
if (prune < 0) {
|
|
/* no command line request */
|
|
if (0 <= gtransport->remote->prune)
|
|
prune = gtransport->remote->prune;
|
|
else if (0 <= fetch_prune_config)
|
|
prune = fetch_prune_config;
|
|
else
|
|
prune = PRUNE_BY_DEFAULT;
|
|
}
|
|
|
|
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(gtransport, refspec, ref_nr);
|
|
free_refspec(ref_nr, refspec);
|
|
transport_disconnect(gtransport);
|
|
gtransport = 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;
|
|
static const char *argv_gc_auto[] = {
|
|
"gc", "--auto", NULL,
|
|
};
|
|
|
|
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]);
|
|
|
|
git_config(git_fetch_config, NULL);
|
|
|
|
argc = parse_options(argc, argv, prefix,
|
|
builtin_fetch_options, builtin_fetch_usage, 0);
|
|
|
|
if (unshallow) {
|
|
if (depth)
|
|
die(_("--depth and --unshallow cannot be used together"));
|
|
else if (!is_repository_shallow())
|
|
die(_("--unshallow on a complete repository does not make sense"));
|
|
else {
|
|
static char inf_depth[12];
|
|
sprintf(inf_depth, "%d", INFINITE_DEPTH);
|
|
depth = inf_depth;
|
|
}
|
|
}
|
|
|
|
/* no need to be strict, transport_set_option() will validate it again */
|
|
if (depth && atoi(depth) < 1)
|
|
die(_("depth %s is not a positive number"), depth);
|
|
|
|
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)) {
|
|
struct argv_array options = ARGV_ARRAY_INIT;
|
|
|
|
add_options_to_argv(&options);
|
|
result = fetch_populated_submodules(&options,
|
|
submodule_prefix,
|
|
recurse_submodules,
|
|
verbosity < 0);
|
|
argv_array_clear(&options);
|
|
}
|
|
|
|
/* All names were strdup()ed or strndup()ed */
|
|
list.strdup_strings = 1;
|
|
string_list_clear(&list, 0);
|
|
|
|
run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
|
|
|
|
return result;
|
|
}
|