diff options
Diffstat (limited to 'builtin-fetch.c')
| -rw-r--r-- | builtin-fetch.c | 328 |
1 files changed, 269 insertions, 59 deletions
diff --git a/builtin-fetch.c b/builtin-fetch.c index cb48c57ca3..5b7db616dc 100644 --- a/builtin-fetch.c +++ b/builtin-fetch.c @@ -14,6 +14,9 @@ static const char * const builtin_fetch_usage[] = { "git fetch [options] [<repository> <refspec>...]", + "git fetch [options] <group>", + "git fetch --multiple [options] [<repository> | <group>]...", + "git fetch --all [options]", NULL }; @@ -23,7 +26,7 @@ enum { TAGS_SET = 2 }; -static int append, force, keep, update_head_ok, verbosity; +static int all, append, dry_run, force, keep, multiple, prune, update_head_ok, verbosity; static int tags = TAGS_DEFAULT; static const char *depth; static const char *upload_pack; @@ -32,16 +35,24 @@ static struct transport *transport; static struct option builtin_fetch_options[] = { OPT__VERBOSITY(&verbosity), + OPT_BOOLEAN(0, "all", &all, + "fetch from all remotes"), OPT_BOOLEAN('a', "append", &append, "append to .git/FETCH_HEAD instead of overwriting"), OPT_STRING(0, "upload-pack", &upload_pack, "PATH", "path to upload pack on remote end"), OPT_BOOLEAN('f', "force", &force, "force overwrite of local branch"), + OPT_BOOLEAN('m', "multiple", &multiple, + "fetch from multiple remotes"), OPT_SET_INT('t', "tags", &tags, "fetch all tags and associated objects", TAGS_SET), OPT_SET_INT('n', NULL, &tags, "do not fetch all tags (--no-tags)", TAGS_UNSET), + OPT_BOOLEAN('p', "prune", &prune, + "prune tracking branches no longer on remote"), + OPT_BOOLEAN(0, "dry-run", &dry_run, + "dry run"), OPT_BOOLEAN('k', "keep", &keep, "keep downloaded pack"), OPT_BOOLEAN('u', "update-head-ok", &update_head_ok, "allow updating of HEAD ref"), @@ -178,6 +189,8 @@ static int s_update_ref(const char *action, char *rla = getenv("GIT_REFLOG_ACTION"); static struct ref_lock *lock; + if (dry_run) + return 0; if (!rla) rla = default_rla.buf; snprintf(msg, sizeof(msg), "%s: %s", rla, action); @@ -269,7 +282,7 @@ static int update_local_ref(struct ref *ref, strcpy(quickref, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV)); strcat(quickref, ".."); strcat(quickref, find_unique_abbrev(ref->new_sha1, DEFAULT_ABBREV)); - r = s_update_ref("fast forward", ref, 1); + r = s_update_ref("fast-forward", ref, 1); sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : ' ', SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote, pretty_ref, r ? " (unable to update local ref)" : ""); @@ -287,7 +300,7 @@ static int update_local_ref(struct ref *ref, r ? "unable to update local ref" : "forced update"); return r; } else { - sprintf(display, "! %-*s %-*s -> %s (non fast forward)", + sprintf(display, "! %-*s %-*s -> %s (non-fast-forward)", SUMMARY_WIDTH, "[rejected]", REFCOL_WIDTH, remote, pretty_ref); return 1; @@ -303,7 +316,7 @@ static int store_updated_refs(const char *raw_url, const char *remote_name, char note[1024]; const char *what, *kind; struct ref *rm; - char *url, *filename = git_path("FETCH_HEAD"); + char *url, *filename = dry_run ? "/dev/null" : git_path("FETCH_HEAD"); fp = fopen(filename, "a"); if (!fp) @@ -485,11 +498,34 @@ static int fetch_refs(struct transport *transport, struct ref *ref_map) return ret; } +static int prune_refs(struct transport *transport, struct ref *ref_map) +{ + int result = 0; + struct ref *ref, *stale_refs = get_stale_heads(transport->remote, ref_map); + const char *dangling_msg = dry_run + ? " (%s will become dangling)\n" + : " (%s has become dangling)\n"; + + for (ref = stale_refs; ref; ref = ref->next) { + if (!dry_run) + result |= delete_ref(ref->name, NULL, 0); + if (verbosity >= 0) { + fprintf(stderr, " x %-*s %-*s -> %s\n", + SUMMARY_WIDTH, "[deleted]", + REFCOL_WIDTH, "(none)", prettify_refname(ref->name)); + warn_dangling_symref(stderr, dangling_msg, ref->name); + } + } + free_refs(stale_refs); + return result; +} + static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata) { struct string_list *list = (struct string_list *)cbdata; - string_list_insert(refname, list); + struct string_list_item *item = string_list_insert(refname, list); + item->util = (void *)sha1; return 0; } @@ -504,57 +540,98 @@ static int will_fetch(struct ref **head, const unsigned char *sha1) return 0; } +struct tag_data { + struct ref **head; + struct ref ***tail; +}; + +static int add_to_tail(struct string_list_item *item, void *cb_data) +{ + struct tag_data *data = (struct tag_data *)cb_data; + struct ref *rm = NULL; + + /* We have already decided to ignore this item */ + if (!item->util) + return 0; + + rm = alloc_ref(item->string); + rm->peer_ref = alloc_ref(item->string); + hashcpy(rm->old_sha1, item->util); + + **data->tail = rm; + *data->tail = &rm->next; + + return 0; +} + static void find_non_local_tags(struct transport *transport, struct ref **head, struct ref ***tail) { struct string_list existing_refs = { NULL, 0, 0, 0 }; - struct string_list new_refs = { NULL, 0, 0, 1 }; - char *ref_name; - int ref_name_len; - const unsigned char *ref_sha1; - const struct ref *tag_ref; - struct ref *rm = NULL; + struct string_list remote_refs = { NULL, 0, 0, 0 }; + struct tag_data data = {head, tail}; const struct ref *ref; + struct string_list_item *item = NULL; for_each_ref(add_existing, &existing_refs); for (ref = transport_get_remote_refs(transport); ref; ref = ref->next) { if (prefixcmp(ref->name, "refs/tags")) continue; - ref_name = xstrdup(ref->name); - ref_name_len = strlen(ref_name); - ref_sha1 = ref->old_sha1; - - if (!strcmp(ref_name + ref_name_len - 3, "^{}")) { - ref_name[ref_name_len - 3] = 0; - tag_ref = transport_get_remote_refs(transport); - while (tag_ref) { - if (!strcmp(tag_ref->name, ref_name)) { - ref_sha1 = tag_ref->old_sha1; - break; - } - tag_ref = tag_ref->next; - } + /* + * The peeled ref always follows the matching base + * ref, so if we see a peeled ref that we don't want + * to fetch then we can mark the ref entry in the list + * as one to ignore by setting util to NULL. + */ + if (!strcmp(ref->name + strlen(ref->name) - 3, "^{}")) { + if (item && !has_sha1_file(ref->old_sha1) && + !will_fetch(head, ref->old_sha1) && + !has_sha1_file(item->util) && + !will_fetch(head, item->util)) + item->util = NULL; + item = NULL; + continue; } - if (!string_list_has_string(&existing_refs, ref_name) && - !string_list_has_string(&new_refs, ref_name) && - (has_sha1_file(ref->old_sha1) || - will_fetch(head, ref->old_sha1))) { - string_list_insert(ref_name, &new_refs); + /* + * If item is non-NULL here, then we previously saw a + * ref not followed by a peeled reference, so we need + * to check if it is a lightweight tag that we want to + * fetch. + */ + if (item && !has_sha1_file(item->util) && + !will_fetch(head, item->util)) + item->util = NULL; + + item = NULL; - rm = alloc_ref(ref_name); - rm->peer_ref = alloc_ref(ref_name); - hashcpy(rm->old_sha1, ref_sha1); + /* skip duplicates and refs that we already have */ + if (string_list_has_string(&remote_refs, ref->name) || + string_list_has_string(&existing_refs, ref->name)) + continue; - **tail = rm; - *tail = &rm->next; - } - free(ref_name); + item = string_list_insert(ref->name, &remote_refs); + item->util = (void *)ref->old_sha1; } string_list_clear(&existing_refs, 0); - string_list_clear(&new_refs, 0); + + /* + * We may have a final lightweight tag that needs to be + * checked to see if it needs fetching. + */ + if (item && !has_sha1_file(item->util) && + !will_fetch(head, item->util)) + item->util = NULL; + + /* + * For all the tags in the remote_refs string list, call + * add_to_tail to add them to the list of refs to be fetched + */ + for_each_string_list(add_to_tail, &remote_refs, &data); + + string_list_clear(&remote_refs, 0); } static void check_not_current_branch(struct ref *ref_map) @@ -574,9 +651,14 @@ static void check_not_current_branch(struct ref *ref_map) static int do_fetch(struct transport *transport, struct refspec *refs, int ref_count) { + struct string_list existing_refs = { NULL, 0, 0, 0 }; + struct string_list_item *peer_item = NULL; struct ref *ref_map; struct ref *rm; int autotags = (transport->remote->fetch_tags == 1); + + for_each_ref(add_existing, &existing_refs); + if (transport->remote->fetch_tags == 2 && tags != TAGS_UNSET) tags = TAGS_SET; if (transport->remote->fetch_tags == -1) @@ -586,7 +668,7 @@ static int do_fetch(struct transport *transport, die("Don't know how to fetch from %s", transport->url); /* if not appending, truncate FETCH_HEAD */ - if (!append) { + if (!append && !dry_run) { char *filename = git_path("FETCH_HEAD"); FILE *fp = fopen(filename, "w"); if (!fp) @@ -599,8 +681,13 @@ static int do_fetch(struct transport *transport, check_not_current_branch(ref_map); for (rm = ref_map; rm; rm = rm->next) { - if (rm->peer_ref) - read_ref(rm->peer_ref->name, rm->peer_ref->old_sha1); + if (rm->peer_ref) { + peer_item = string_list_lookup(rm->peer_ref->name, + &existing_refs); + if (peer_item) + hashcpy(rm->peer_ref->old_sha1, + peer_item->util); + } } if (tags == TAGS_DEFAULT && autotags) @@ -609,6 +696,8 @@ static int do_fetch(struct transport *transport, free_refs(ref_map); return 1; } + if (prune) + prune_refs(transport, ref_map); free_refs(ref_map); /* if neither --no-tags nor --tags was specified, do automated tag @@ -639,33 +728,100 @@ static void set_option(const char *name, const char *value) name, transport->url); } -int cmd_fetch(int argc, const char **argv, const char *prefix) +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(remote->name, list); + return 0; +} + +struct remote_group_data { + const char *name; + struct string_list *list; +}; + +static int get_remote_group(const char *key, const char *value, void *priv) +{ + struct remote_group_data *g = priv; + + if (!prefixcmp(key, "remotes.") && + !strcmp(key + 8, g->name)) { + /* split list by white space */ + int space = strcspn(value, " \t\n"); + while (*value) { + if (space > 1) { + string_list_append(xstrndup(value, space), + g->list); + } + 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 = { name, 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(remote->name, list); + } + return 1; +} + +static int fetch_multiple(struct string_list *list) +{ + int i, result = 0; + const char *argv[] = { "fetch", NULL, NULL, NULL, NULL, NULL, NULL }; + int argc = 1; + + if (dry_run) + argv[argc++] = "--dry-run"; + if (prune) + argv[argc++] = "--prune"; + if (verbosity >= 2) + argv[argc++] = "-v"; + if (verbosity >= 1) + argv[argc++] = "-v"; + else if (verbosity < 0) + argv[argc++] = "-q"; + + for (i = 0; i < list->nr; i++) { + const char *name = list->items[i].string; + argv[argc] = name; + if (verbosity >= 0) + printf("Fetching %s\n", name); + if (run_command_v_opt(argv, RUN_GIT_CMD)) { + error("Could not fetch %s", name); + result = 1; + } + } + + return result; +} + +static int fetch_one(struct remote *remote, int argc, const char **argv) { - struct remote *remote; int i; static const char **refs = NULL; int ref_nr = 0; int exit_code; - /* Record the command line for the reflog */ - strbuf_addstr(&default_rla, "fetch"); - for (i = 1; i < argc; i++) - strbuf_addf(&default_rla, " %s", argv[i]); - - argc = parse_options(argc, argv, prefix, - builtin_fetch_options, builtin_fetch_usage, 0); - - if (argc == 0) - remote = remote_get(NULL); - else - remote = remote_get(argv[0]); - if (!remote) die("Where do you want to fetch from today?"); transport = transport_get(remote, remote->url[0]); if (verbosity >= 2) - transport->verbose = 1; + transport->verbose = verbosity <= 3 ? verbosity : 3; if (verbosity < 0) transport->verbose = -1; if (upload_pack) @@ -675,10 +831,10 @@ int cmd_fetch(int argc, const char **argv, const char *prefix) if (depth) set_option(TRANS_OPT_DEPTH, depth); - if (argc > 1) { + if (argc > 0) { int j = 0; refs = xcalloc(argc + 1, sizeof(const char *)); - for (i = 1; i < argc; i++) { + for (i = 0; i < argc; i++) { if (!strcmp(argv[i], "tag")) { char *ref; i++; @@ -705,3 +861,57 @@ int cmd_fetch(int argc, const char **argv, const char *prefix) transport = NULL; return exit_code; } + +int cmd_fetch(int argc, const char **argv, const char *prefix) +{ + int i; + struct string_list list = { NULL, 0, 0, 0 }; + struct remote *remote; + int result = 0; + + /* Record the command line for the reflog */ + strbuf_addstr(&default_rla, "fetch"); + for (i = 1; i < argc; i++) + strbuf_addf(&default_rla, " %s", argv[i]); + + argc = parse_options(argc, argv, prefix, + builtin_fetch_options, builtin_fetch_usage, 0); + + if (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); + } + } + + /* All names were strdup()ed or strndup()ed */ + list.strdup_strings = 1; + string_list_clear(&list, 0); + + return result; +} |