diff options
Diffstat (limited to 'remote.c')
-rw-r--r-- | remote.c | 764 |
1 files changed, 445 insertions, 319 deletions
@@ -8,6 +8,7 @@ #include "tag.h" #include "string-list.h" #include "mergesort.h" +#include "argv-array.h" enum map_direction { FROM_SRC, FROM_DST }; @@ -42,23 +43,18 @@ struct rewrites { 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 *default_remote_name; -static const char *branch_pushremote_name; static const char *pushremote_name; -static int explicit_default_remote_name; static struct rewrites rewrites; static struct rewrites rewrites_push; -#define BUF_SIZE (2048) -static char buffer[BUF_SIZE]; - static int valid_remote(const struct remote *remote) { return (!!remote->url) || (!!remote->foreign_vcs); @@ -67,7 +63,6 @@ static int valid_remote(const struct remote *remote) static const char *alias_url(const char *url, struct rewrites *r) { int i, j; - char *ret; struct counted_string *longest; int longest_i; @@ -88,11 +83,7 @@ static const char *alias_url(const char *url, struct rewrites *r) if (!longest) return url; - ret = xmalloc(r->rewrite[longest_i]->baselen + - (strlen(url) - longest->len) + 1); - strcpy(ret, r->rewrite[longest_i]->base); - strcpy(ret + r->rewrite[longest_i]->baselen, url + longest->len); - return ret; + return xstrfmt("%s%s", r->rewrite[longest_i]->base, url + longest->len); } static void add_push_refspec(struct remote *remote, const char *ref) @@ -136,26 +127,51 @@ static void add_url_alias(struct remote *remote, const char *url) add_pushurl_alias(remote, url); } +struct remotes_hash_key { + const char *str; + int len; +}; + +static int remotes_hash_cmp(const struct remote *a, const struct remote *b, const struct remotes_hash_key *key) +{ + 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, (hashmap_cmp_fn)remotes_hash_cmp, 0); +} + static struct remote *make_remote(const char *name, int len) { - struct remote *ret; - int i; + struct remote *ret, *replaced; + struct remotes_hash_key lookup; + struct hashmap_entry lookup_entry; - for (i = 0; i < remotes_nr; i++) { - if (len ? (!strncmp(name, remotes[i]->name, len) && - !remotes[i]->name[len]) : - !strcmp(name, remotes[i]->name)) - return remotes[i]; - } + 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 */ ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc); remotes[remotes_nr++] = ret; - if (len) - ret->name = xstrndup(name, len); - else - ret->name = xstrdup(name); + ret->name = xstrndup(name, len); + + hashmap_entry_init(ret, lookup_entry.hash); + replaced = hashmap_put(&remotes_hash, ret); + assert(replaced == NULL); /* no previous entry overwritten */ return ret; } @@ -170,7 +186,6 @@ static struct branch *make_branch(const char *name, int len) { struct branch *ret; int i; - char *refname; for (i = 0; i < branches_nr; i++) { if (len ? (!strncmp(name, branches[i]->name, len) && @@ -186,10 +201,7 @@ static struct branch *make_branch(const char *name, int len) ret->name = xstrndup(name, len); else ret->name = xstrdup(name); - refname = xmalloc(strlen(name) + strlen("refs/heads/") + 1); - strcpy(refname, "refs/heads/"); - strcpy(refname + strlen("refs/heads/"), ret->name); - ret->refname = refname; + ret->refname = xstrfmt("refs/heads/%s", ret->name); return ret; } @@ -229,206 +241,165 @@ static void add_instead_of(struct rewrite *rewrite, const char *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(git_path("remotes/%s", remote->name), "r"); if (!f) return; remote->origin = REMOTE_REMOTES; - while (fgets(buffer, BUF_SIZE, f)) { - int value_list; - char *s, *p; - - if (starts_with(buffer, "URL:")) { - value_list = 0; - s = buffer + 4; - } else if (starts_with(buffer, "Push:")) { - value_list = 1; - s = buffer + 5; - } else if (starts_with(buffer, "Pull:")) { - value_list = 2; - s = buffer + 5; - } else - continue; - - while (isspace(*s)) - s++; - if (!*s) - continue; + while (strbuf_getline(&buf, f) != EOF) { + const char *v; - p = s + strlen(s); - while (isspace(p[-1])) - *--p = 0; + strbuf_rtrim(&buf); - switch (value_list) { - case 0: - add_url_alias(remote, xstrdup(s)); - break; - case 1: - add_push_refspec(remote, xstrdup(s)); - break; - case 2: - add_fetch_refspec(remote, xstrdup(s)); - break; - } + if (skip_prefix(buf.buf, "URL:", &v)) + add_url_alias(remote, xstrdup(skip_spaces(v))); + else if (skip_prefix(buf.buf, "Push:", &v)) + add_push_refspec(remote, xstrdup(skip_spaces(v))); + else if (skip_prefix(buf.buf, "Pull:", &v)) + add_fetch_refspec(remote, xstrdup(skip_spaces(v))); } + strbuf_release(&buf); fclose(f); } static void read_branches_file(struct remote *remote) { char *frag; - struct strbuf branch = STRBUF_INIT; - int n = 1000; - FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r"); - char *s, *p; - int len; + struct strbuf buf = STRBUF_INIT; + FILE *f = fopen(git_path("branches/%s", remote->name), "r"); if (!f) return; - s = fgets(buffer, BUF_SIZE, f); + + strbuf_getline_lf(&buf, f); fclose(f); - if (!s) - return; - while (isspace(*s)) - s++; - if (!*s) + strbuf_trim(&buf); + if (!buf.len) { + strbuf_release(&buf); return; + } + remote->origin = REMOTE_BRANCHES; - p = s + strlen(s); - while (isspace(p[-1])) - *--p = 0; - len = p - s; - p = xmalloc(len + 1); - strcpy(p, s); /* * The branches file would have URL and optionally * #branch specified. The "master" (or specified) branch is - * fetched and stored in the local branch of the same name. + * fetched and stored in the local branch matching the + * remote name. */ - frag = strchr(p, '#'); - if (frag) { + frag = strchr(buf.buf, '#'); + if (frag) *(frag++) = '\0'; - strbuf_addf(&branch, "refs/heads/%s", frag); - } else - strbuf_addstr(&branch, "refs/heads/master"); + else + frag = "master"; + + add_url_alias(remote, strbuf_detach(&buf, NULL)); + add_fetch_refspec(remote, xstrfmt("refs/heads/%s:refs/heads/%s", + frag, remote->name)); - strbuf_addf(&branch, ":refs/heads/%s", remote->name); - add_url_alias(remote, p); - add_fetch_refspec(remote, strbuf_detach(&branch, NULL)); /* * Cogito compatible push: push current HEAD to remote #branch * (master if missing) */ - strbuf_init(&branch, 0); - strbuf_addstr(&branch, "HEAD"); - if (frag) - strbuf_addf(&branch, ":refs/heads/%s", frag); - else - strbuf_addstr(&branch, ":refs/heads/master"); - add_push_refspec(remote, strbuf_detach(&branch, NULL)); + add_push_refspec(remote, xstrfmt("HEAD:refs/heads/%s", frag)); remote->fetch_tags = 1; /* always auto-follow */ } 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 (starts_with(key, "branch.")) { - name = key + 7; - subkey = strrchr(name, '.'); - if (!subkey) + if (parse_config_key(key, "branch", &name, &namelen, &subkey) >= 0) { + if (!name) return 0; - branch = make_branch(name, subkey - name); - if (!strcmp(subkey, ".remote")) { - if (git_config_string(&branch->remote_name, key, value)) - return -1; - if (branch == current_branch) { - default_remote_name = branch->remote_name; - explicit_default_remote_name = 1; - } - } else if (!strcmp(subkey, ".pushremote")) { - if (branch == current_branch) - if (git_config_string(&branch_pushremote_name, key, value)) - return -1; - } else if (!strcmp(subkey, ".merge")) { + 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 (starts_with(key, "url.")) { + if (parse_config_key(key, "url", &name, &namelen, &subkey) >= 0) { struct rewrite *rewrite; - name = key + 4; - subkey = strrchr(name, '.'); - if (!subkey) + if (!name) return 0; - if (!strcmp(subkey, ".insteadof")) { - rewrite = make_rewrite(&rewrites, name, subkey - name); + 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, subkey - name); + } 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 (!starts_with(key, "remote.")) + if (parse_config_key(key, "remote", &name, &namelen, &subkey) < 0) return 0; - name = key + 7; /* Handle remote.* variables */ - if (!strcmp(name, "pushdefault")) + 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; } - subkey = strrchr(name, '.'); - if (!subkey) - return 0; - remote = make_remote(name, subkey - name); + remote = make_remote(name, namelen); remote->origin = REMOTE_CONFIG; - if (!strcmp(subkey, ".mirror")) + if (!strcmp(subkey, "mirror")) remote->mirror = git_config_bool(key, value); - else if (!strcmp(subkey, ".skipdefaultupdate")) + else if (!strcmp(subkey, "skipdefaultupdate")) remote->skip_default_update = git_config_bool(key, value); - else if (!strcmp(subkey, ".skipfetchall")) + else if (!strcmp(subkey, "skipfetchall")) remote->skip_default_update = git_config_bool(key, value); - else if (!strcmp(subkey, ".prune")) + else if (!strcmp(subkey, "prune")) remote->prune = git_config_bool(key, value); - else if (!strcmp(subkey, ".url")) { + 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")) { + } 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")) { + } else if (!strcmp(subkey, "push")) { const char *v; if (git_config_string(&v, key, value)) return -1; add_push_refspec(remote, v); - } else if (!strcmp(subkey, ".fetch")) { + } else if (!strcmp(subkey, "fetch")) { const char *v; if (git_config_string(&v, key, value)) return -1; add_fetch_refspec(remote, v); - } else if (!strcmp(subkey, ".receivepack")) { + } else if (!strcmp(subkey, "receivepack")) { const char *v; if (git_config_string(&v, key, value)) return -1; @@ -436,7 +407,7 @@ static int handle_config(const char *key, const char *value, void *cb) remote->receivepack = v; else error("more than one receivepack given, using the first"); - } else if (!strcmp(subkey, ".uploadpack")) { + } else if (!strcmp(subkey, "uploadpack")) { const char *v; if (git_config_string(&v, key, value)) return -1; @@ -444,15 +415,18 @@ static int handle_config(const char *key, const char *value, void *cb) remote->uploadpack = v; else error("more than one uploadpack given, using the first"); - } else if (!strcmp(subkey, ".tagopt")) { + } 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")) { + } else if (!strcmp(subkey, "proxy")) { return git_config_string((const char **)&remote->http_proxy, key, value); - } else if (!strcmp(subkey, ".vcs")) { + } 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; @@ -479,24 +453,22 @@ static void alias_all_urls(void) static void read_config(void) { - unsigned char sha1[20]; + static int loaded; + struct object_id oid; const char *head_ref; int flag; - if (default_remote_name) /* did this already */ + + if (loaded) return; - default_remote_name = "origin"; + loaded = 1; + current_branch = NULL; - head_ref = resolve_ref_unsafe("HEAD", sha1, 0, &flag); + head_ref = resolve_ref_unsafe("HEAD", 0, oid.hash, &flag); if (head_ref && (flag & REF_ISSYMREF) && - starts_with(head_ref, "refs/heads/")) { - current_branch = - make_branch(head_ref + strlen("refs/heads/"), 0); + skip_prefix(head_ref, "refs/heads/", &head_ref)) { + current_branch = make_branch(head_ref, 0); } git_config(handle_config, NULL); - if (branch_pushremote_name) { - free((char *)pushremote_name); - pushremote_name = branch_pushremote_name; - } alias_all_urls(); } @@ -523,7 +495,7 @@ static void free_refspecs(struct refspec *refspec, int nr_refspec) static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify) { int i; - struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec); + struct refspec *rs = xcalloc(nr_refspec, sizeof(*rs)); for (i = 0; i < nr_refspec; i++) { size_t llen; @@ -570,12 +542,12 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0); if (fetch) { - unsigned char unused[40]; + struct object_id unused; /* LHS */ if (!*rs[i].src) ; /* empty is ok; it means "HEAD" */ - else if (llen == 40 && !get_sha1_hex(rs[i].src, unused)) + else if (llen == GIT_SHA1_HEXSZ && !get_oid_hex(rs[i].src, &unused)) rs[i].exact_sha1 = 1; /* ok */ else if (!check_refname_format(rs[i].src, flags)) ; /* valid looking ref is ok */ @@ -675,22 +647,45 @@ static int valid_remote_nick(const char *name) return !strchr(name, '/'); /* no slash */ } -static struct remote *remote_get_1(const char *name, const char *pushremote_name) +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); +} + +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 { - if (pushremote_name) { - name = pushremote_name; - name_given = 1; - } else { - name = default_remote_name; - name_given = explicit_default_remote_name; - } - } + else + name = get_default(current_branch, &name_given); ret = make_remote(name, 0); if (valid_remote_nick(name)) { @@ -710,25 +705,17 @@ static struct remote *remote_get_1(const char *name, const char *pushremote_name struct remote *remote_get(const char *name) { - read_config(); - return remote_get_1(name, NULL); + return remote_get_1(name, remote_for_branch); } struct remote *pushremote_get(const char *name) { - read_config(); - return remote_get_1(name, pushremote_name); + return remote_get_1(name, pushremote_for_branch); } -int remote_is_configured(const char *name) +int remote_is_configured(struct remote *remote) { - int i; - read_config(); - - for (i = 0; i < remotes_nr; i++) - if (!strcmp(name, remotes[i]->name)) - return 1; - return 0; + return remote && remote->origin; } int for_each_remote(each_remote_fn fn, void *priv) @@ -838,21 +825,14 @@ static int match_name_with_pattern(const char *key, const char *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, '*'); - size_t vlen; - size_t vsuffixlen; if (!vstar) die("Value '%s' of pattern has no '*'", value); - vlen = vstar - value; - vsuffixlen = strlen(vstar + 1); - *result = xmalloc(vlen + vsuffixlen + - strlen(name) - - klen - ksuffixlen + 1); - strncpy(*result, value, vlen); - strncpy(*result + vlen, - name + klen, namelen - klen - ksuffixlen); - strcpy(*result + vlen + namelen - klen - ksuffixlen, - vstar + 1); + 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; } @@ -937,7 +917,7 @@ 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, sizeof(struct ref) + prefixlen + len + 1); + 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; @@ -954,12 +934,12 @@ struct ref *copy_ref(const struct ref *ref) size_t len; if (!ref) return NULL; - len = strlen(ref->name); - cpy = xmalloc(sizeof(struct ref) + len + 1); - memcpy(cpy, ref, sizeof(struct ref) + len + 1); + len = st_add3(sizeof(struct ref), strlen(ref->name), 1); + cpy = xmalloc(len); + memcpy(cpy, ref, len); cpy->next = NULL; - cpy->symref = ref->symref ? xstrdup(ref->symref) : NULL; - cpy->remote_status = ref->remote_status ? xstrdup(ref->remote_status) : 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; } @@ -1084,14 +1064,14 @@ static void tail_link_ref(struct ref *ref, struct ref ***tail) static struct ref *alloc_delete_ref(void) { struct ref *ref = alloc_ref("(delete)"); - hashclr(ref->new_sha1); + oidclr(&ref->new_oid); return ref; } static int try_explicit_object_name(const char *name, struct ref **match) { - unsigned char sha1[20]; + struct object_id oid; if (!*name) { if (match) @@ -1099,12 +1079,12 @@ static int try_explicit_object_name(const char *name, return 0; } - if (get_sha1(name, sha1)) + if (get_sha1(name, oid.hash)) return -1; if (match) { *match = alloc_ref(name); - hashcpy((*match)->new_sha1, sha1); + oidcpy(&(*match)->new_oid, &oid); } return 0; } @@ -1119,9 +1099,10 @@ static struct ref *make_linked_ref(const char *name, struct ref ***tail) static char *guess_ref(const char *name, struct ref *peer) { struct strbuf buf = STRBUF_INIT; - unsigned char sha1[20]; + struct object_id oid; - const char *r = resolve_ref_unsafe(peer->name, sha1, 1, NULL); + const char *r = resolve_ref_unsafe(peer->name, RESOLVE_REF_READING, + oid.hash, NULL); if (!r) return NULL; @@ -1179,10 +1160,12 @@ static int match_explicit(struct ref *src, struct ref *dst, return -1; if (!dst_value) { - unsigned char sha1[20]; + struct object_id oid; int flag; - dst_value = resolve_ref_unsafe(matched_src->name, sha1, 1, &flag); + dst_value = resolve_ref_unsafe(matched_src->name, + RESOLVE_REF_READING, + oid.hash, &flag); if (!dst_value || ((flag & REF_ISSYMREF) && !starts_with(dst_value, "refs/heads/"))) @@ -1194,9 +1177,9 @@ static int match_explicit(struct ref *src, struct ref *dst, case 1: break; case 0: - if (!memcmp(dst_value, "refs/", 5)) + if (starts_with(dst_value, "refs/")) matched_dst = make_linked_ref(dst_value, dst_tail); - else if (is_null_sha1(matched_src->new_sha1)) + 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))) @@ -1298,13 +1281,13 @@ struct tips { int nr, alloc; }; -static void add_to_tips(struct tips *tips, const unsigned char *sha1) +static void add_to_tips(struct tips *tips, const struct object_id *oid) { struct commit *commit; - if (is_null_sha1(sha1)) + if (is_null_oid(oid)) return; - commit = lookup_commit_reference_gently(sha1, 1); + commit = lookup_commit_reference_gently(oid->hash, 1); if (!commit || (commit->object.flags & TMP_MARK)) return; commit->object.flags |= TMP_MARK; @@ -1327,16 +1310,16 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds memset(&sent_tips, 0, sizeof(sent_tips)); for (ref = *dst; ref; ref = ref->next) { if (ref->peer_ref && - !is_null_sha1(ref->peer_ref->new_sha1)) - add_to_tips(&sent_tips, ref->peer_ref->new_sha1); + !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_sha1); + 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); - sort_string_list(&dst_tag); + string_list_sort(&dst_tag); /* Collect tags they do not have. */ for (ref = src; ref; ref = ref->next) { @@ -1344,7 +1327,7 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds continue; /* not a tag */ if (string_list_has_string(&dst_tag, ref->name)) continue; /* they already have it */ - if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG) + if (sha1_object_info(ref->new_oid.hash, NULL) != OBJ_TAG) continue; /* be conservative */ item = string_list_append(&src_tag, ref->name); item->util = ref; @@ -1364,9 +1347,9 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds struct ref *dst_ref; struct commit *commit; - if (is_null_sha1(ref->new_sha1)) + if (is_null_oid(&ref->new_oid)) continue; - commit = lookup_commit_reference_gently(ref->new_sha1, 1); + commit = lookup_commit_reference_gently(ref->new_oid.hash, 1); if (!commit) /* not pushing a commit, which is not an error */ continue; @@ -1380,7 +1363,7 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds /* Add it in */ dst_ref = make_linked_ref(ref->name, dst_tail); - hashcpy(dst_ref->new_sha1, ref->new_sha1); + oidcpy(&dst_ref->new_oid, &ref->new_oid); dst_ref->peer_ref = copy_ref(ref); } } @@ -1401,7 +1384,7 @@ 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; - sort_string_list(ref_index); + string_list_sort(ref_index); } /* @@ -1487,7 +1470,7 @@ int match_push_refs(struct ref *src, struct ref **dst, /* Create a new one and link it */ dst_peer = make_linked_ref(dst_name, &dst_tail); - hashcpy(dst_peer->new_sha1, ref->new_sha1); + oidcpy(&dst_peer->new_oid, &ref->new_oid); string_list_insert(&dst_ref_index, dst_peer->name)->util = dst_peer; } @@ -1539,23 +1522,20 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, int reject_reason = 0; if (ref->peer_ref) - hashcpy(ref->new_sha1, ref->peer_ref->new_sha1); + oidcpy(&ref->new_oid, &ref->peer_ref->new_oid); else if (!send_mirror) continue; - ref->deletion = is_null_sha1(ref->new_sha1); + ref->deletion = is_null_oid(&ref->new_oid); if (!ref->deletion && - !hashcmp(ref->old_sha1, ref->new_sha1)) { + !oidcmp(&ref->old_oid, &ref->new_oid)) { ref->status = REF_STATUS_UPTODATE; continue; } /* - * Bypass the usual "must fast-forward" check but - * replace it with a weaker "the old value must be - * this value we observed". If the remote ref has - * moved and is now different from what we expect, - * reject any push. + * 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 @@ -1564,12 +1544,16 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, */ if (ref->expect_old_sha1) { if (ref->expect_old_no_trackback || - hashcmp(ref->old_sha1, ref->old_sha1_expect)) + oidcmp(&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; } /* - * The usual "must fast-forward" rules. + * 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 @@ -1588,15 +1572,15 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, * passing the --force argument */ - else if (!ref->deletion && !is_null_sha1(ref->old_sha1)) { + 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_sha1_file(ref->old_sha1)) + else if (!has_object_file(&ref->old_oid)) reject_reason = REF_STATUS_REJECT_FETCH_FIRST; - else if (!lookup_commit_reference_gently(ref->old_sha1, 1) || - !lookup_commit_reference_gently(ref->new_sha1, 1)) + else if (!lookup_commit_reference_gently(ref->old_oid.hash, 1) || + !lookup_commit_reference_gently(ref->new_oid.hash, 1)) reject_reason = REF_STATUS_REJECT_NEEDS_FORCE; - else if (!ref_newer(ref->new_sha1, ref->old_sha1)) + else if (!ref_newer(&ref->new_oid, &ref->old_oid)) reject_reason = REF_STATUS_REJECT_NONFASTFORWARD; } @@ -1611,6 +1595,43 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror, } } +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.hash, &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; @@ -1620,20 +1641,7 @@ struct branch *branch_get(const char *name) ret = current_branch; else ret = make_branch(name, 0); - if (ret && ret->remote_name) { - ret->remote = remote_get(ret->remote_name); - if (ret->merge_nr) { - int i; - 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(ret->remote, ret->merge[i]) - && !strcmp(ret->remote_name, ".")) - ret->merge[i]->dst = xstrdup(ret->merge_name[i]); - } - } - } + set_merge(ret); return ret; } @@ -1651,12 +1659,136 @@ int branch_merge_matches(struct branch *branch, 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, remote->fetch_refspec_nr, 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; + + if (!branch) + return error_buf(err, _("HEAD does not point to a branch")); + + 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_refspec_nr) { + char *dst; + const char *ret; + + dst = apply_refspecs(remote->push, remote->push_refspec_nr, + 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; + } + } + + die("BUG: unhandled push situation"); +} + +const char *branch_get_push(struct branch *branch, struct strbuf *err) +{ + 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) { - unsigned char sha1[20]; + struct object_id oid; int flag; - if (!resolve_ref_unsafe(refname, sha1, 0, &flag)) + if (!resolve_ref_unsafe(refname, 0, oid.hash, &flag)) return 0; /* non-existing refs are OK */ return (flag & REF_ISSYMREF); } @@ -1747,7 +1879,7 @@ int get_fetch_map(const struct ref *remote_refs, if (refspec->exact_sha1) { ref_map = alloc_ref(name); - get_sha1_hex(name, ref_map->old_sha1); + get_oid_hex(name, &ref_map->old_oid); } else { ref_map = get_remote_ref(remote_refs, name); } @@ -1788,7 +1920,7 @@ int resolve_remote_symref(struct ref *ref, struct ref *list) return 0; for (; list; list = list->next) if (!strcmp(ref->symref, list->name)) { - hashcpy(ref->old_sha1, list->old_sha1); + oidcpy(&ref->old_oid, &list->old_oid); return 0; } return 1; @@ -1797,14 +1929,12 @@ int resolve_remote_symref(struct ref *ref, struct ref *list) static void unmark_and_free(struct commit_list *list, unsigned int mark) { while (list) { - struct commit_list *temp = list; - temp->item->object.flags &= ~mark; - list = temp->next; - free(temp); + struct commit *commit = pop_commit(&list); + commit->object.flags &= ~mark; } } -int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1) +int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid) { struct object *o; struct commit *old, *new; @@ -1815,12 +1945,12 @@ int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1) * Both new and old must be commit-ish and new is descendant of * old. Otherwise we require --force. */ - o = deref_tag(parse_object(old_sha1), NULL, 0); + o = deref_tag(parse_object(old_oid->hash), NULL, 0); if (!o || o->type != OBJ_COMMIT) return 0; old = (struct commit *) o; - o = deref_tag(parse_object(new_sha1), NULL, 0); + o = deref_tag(parse_object(new_oid->hash), NULL, 0); if (!o || o->type != OBJ_COMMIT) return 0; new = (struct commit *) o; @@ -1845,60 +1975,60 @@ int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1) /* * Compare a branch with its upstream, and save their differences (number - * of commits) in *num_ours and *num_theirs. + * of commits) in *num_ours and *num_theirs. The name of the upstream branch + * (or NULL if no upstream is defined) is returned via *upstream_name, if it + * is not itself NULL. * - * Return 0 if branch has no upstream (no base), -1 if upstream is missing - * (with "gone" base), otherwise 1 (with base). + * Returns -1 if num_ours and num_theirs could not be filled in (e.g., no + * upstream defined, or ref does not exist), 0 otherwise. */ -int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs) +int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs, + const char **upstream_name) { - unsigned char sha1[20]; + struct object_id oid; struct commit *ours, *theirs; - char symmetric[84]; struct rev_info revs; - const char *rev_argv[10], *base; - int rev_argc; + const char *base; + struct argv_array argv = ARGV_ARRAY_INIT; /* Cannot stat unless we are marked to build on top of somebody else. */ - if (!branch || - !branch->merge || !branch->merge[0] || !branch->merge[0]->dst) - return 0; + 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 */ - base = branch->merge[0]->dst; - if (read_ref(base, sha1)) + if (read_ref(base, oid.hash)) return -1; - theirs = lookup_commit_reference(sha1); + theirs = lookup_commit_reference(oid.hash); if (!theirs) return -1; - if (read_ref(branch->refname, sha1)) + if (read_ref(branch->refname, oid.hash)) return -1; - ours = lookup_commit_reference(sha1); + ours = lookup_commit_reference(oid.hash); if (!ours) return -1; /* are we the same? */ if (theirs == ours) { *num_theirs = *num_ours = 0; - return 1; + return 0; } /* Run "rev-list --left-right ours...theirs" internally... */ - rev_argc = 0; - rev_argv[rev_argc++] = NULL; - rev_argv[rev_argc++] = "--left-right"; - rev_argv[rev_argc++] = symmetric; - rev_argv[rev_argc++] = "--"; - rev_argv[rev_argc] = NULL; - - strcpy(symmetric, sha1_to_hex(ours->object.sha1)); - strcpy(symmetric + 40, "..."); - strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1)); + 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, "--"); init_revisions(&revs, NULL); - setup_revisions(rev_argc, rev_argv, &revs, NULL); - prepare_revision_walk(&revs); + 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. */ *num_ours = 0; @@ -1916,7 +2046,9 @@ int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs) /* clear object flags smudged by the above traversal */ clear_commit_marks(ours, ALL_REV_FLAGS); clear_commit_marks(theirs, ALL_REV_FLAGS); - return 1; + + argv_array_clear(&argv); + return 0; } /* @@ -1925,24 +2057,17 @@ int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs) int format_tracking_info(struct branch *branch, struct strbuf *sb) { int ours, theirs; - const char *base; + const char *full_base; + char *base; int upstream_is_gone = 0; - switch (stat_tracking_info(branch, &ours, &theirs)) { - case 0: - /* no base */ - return 0; - case -1: - /* with "gone" base */ + if (stat_tracking_info(branch, &ours, &theirs, &full_base) < 0) { + if (!full_base) + return 0; upstream_is_gone = 1; - break; - default: - /* with base */ - break; } - base = branch->merge[0]->dst; - base = shorten_unambiguous_ref(base, 0); + 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"), @@ -1988,23 +2113,22 @@ int format_tracking_info(struct branch *branch, struct strbuf *sb) strbuf_addf(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 unsigned char *sha1, int flag, void *cb_data) +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; - int len; /* we already know it starts with refs/ to get here */ if (check_refname_format(refname + 5, 0)) return 0; - len = strlen(refname) + 1; - ref = xcalloc(1, sizeof(*ref) + len); - hashcpy(ref->new_sha1, sha1); - memcpy(ref->name, refname, len); + ref = alloc_ref(refname); + oidcpy(&ref->new_oid, oid); **local_tail = ref; *local_tail = &ref->next; return 0; @@ -2013,6 +2137,7 @@ static int one_local_ref(const char *refname, const unsigned char *sha1, int fla 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; } @@ -2039,7 +2164,7 @@ struct ref *guess_remote_head(const struct ref *head, /* If refs/heads/master could be right, it is. */ if (!all) { r = find_ref_by_name(refs, "refs/heads/master"); - if (r && !hashcmp(r->old_sha1, head->old_sha1)) + if (r && !oidcmp(&r->old_oid, &head->old_oid)) return copy_ref(r); } @@ -2047,7 +2172,7 @@ struct ref *guess_remote_head(const struct ref *head, for (r = refs; r; r = r->next) { if (r != head && starts_with(r->name, "refs/heads/") && - !hashcmp(r->old_sha1, head->old_sha1)) { + !oidcmp(&r->old_oid, &head->old_oid)) { *tail = copy_ref(r); tail = &((*tail)->next); if (!all) @@ -2065,8 +2190,8 @@ struct stale_heads_info { int ref_count; }; -static int get_stale_heads_cb(const char *refname, - const unsigned char *sha1, int flags, void *cb_data) +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; @@ -2095,7 +2220,7 @@ static int get_stale_heads_cb(const char *refname, if (stale) { struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail); - hashcpy(ref->new_sha1, sha1); + oidcpy(&ref->new_oid, oid); } clean_exit: @@ -2108,13 +2233,14 @@ struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fet 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.refs = refs; info.ref_count = ref_count; for (ref = fetch_map; ref; ref = ref->next) string_list_append(&ref_names, ref->name); - sort_string_list(&ref_names); + string_list_sort(&ref_names); for_each_ref(get_stale_heads_cb, &info); string_list_clear(&ref_names, 0); return stale_refs; @@ -2123,7 +2249,7 @@ struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fet /* * Compare-and-swap */ -void clear_cas_option(struct push_cas_option *cas) +static void clear_cas_option(struct push_cas_option *cas) { int i; @@ -2189,14 +2315,14 @@ int is_empty_cas(const struct push_cas_option *cas) * If we cannot do so, return negative to signal an error. */ static int remote_tracking(struct remote *remote, const char *refname, - unsigned char sha1[20]) + struct object_id *oid) { char *dst; dst = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname); if (!dst) return -1; /* no tracking ref for refname at remote */ - if (read_ref(dst, sha1)) + if (read_ref(dst, oid->hash)) return -1; /* we know what the tracking ref is but we cannot read it */ return 0; } @@ -2214,8 +2340,8 @@ static void apply_cas(struct push_cas_option *cas, continue; ref->expect_old_sha1 = 1; if (!entry->use_tracking) - hashcpy(ref->old_sha1_expect, cas->entry[i].expect); - else if (remote_tracking(remote, ref->name, ref->old_sha1_expect)) + hashcpy(ref->old_oid_expect.hash, cas->entry[i].expect); + else if (remote_tracking(remote, ref->name, &ref->old_oid_expect)) ref->expect_old_no_trackback = 1; return; } @@ -2225,7 +2351,7 @@ static void apply_cas(struct push_cas_option *cas, return; ref->expect_old_sha1 = 1; - if (remote_tracking(remote, ref->name, ref->old_sha1_expect)) + if (remote_tracking(remote, ref->name, &ref->old_oid_expect)) ref->expect_old_no_trackback = 1; } |