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#include "builtin.h" #include "cache.h" #include "refs.h" #include "commit.h" #include "sigchain.h" static char *get_stdin(void) { struct strbuf buf = STRBUF_INIT; if (strbuf_read(&buf, 0, 1024) < 0) { die("error reading standard input: %s", strerror(errno)); } return strbuf_detach(&buf, NULL); } static void show_new(enum object_type type, unsigned char *sha1_new) { fprintf(stderr, " %s: %s\n", typename(type), find_unique_abbrev(sha1_new, DEFAULT_ABBREV)); } static int update_ref_env(const char *action, const char *refname, unsigned char *sha1, unsigned char *oldval) { char msg[1024]; const char *rla = getenv("GIT_REFLOG_ACTION"); if (!rla) rla = "(reflog update)"; if (snprintf(msg, sizeof(msg), "%s: %s", rla, action) >= sizeof(msg)) warning("reflog message too long: %.*s...", 50, msg); return update_ref(msg, refname, sha1, oldval, 0, QUIET_ON_ERR); } static int update_local_ref(const char *name, const char *new_head, const char *note, int verbose, int force) { unsigned char sha1_old[20], sha1_new[20]; char oldh[41], newh[41]; struct commit *current, *updated; enum object_type type; if (get_sha1_hex(new_head, sha1_new)) die("malformed object name %s", new_head); type = sha1_object_info(sha1_new, NULL); if (type < 0) die("object %s not found", new_head); if (!*name) { /* Not storing */ if (verbose) { fprintf(stderr, "* fetched %s\n", note); show_new(type, sha1_new); } return 0; } if (get_sha1(name, sha1_old)) { const char *msg; just_store: /* new ref */ if (!strncmp(name, "refs/tags/", 10)) msg = "storing tag"; else msg = "storing head"; fprintf(stderr, "* %s: storing %s\n", name, note); show_new(type, sha1_new); return update_ref_env(msg, name, sha1_new, NULL); } if (!hashcmp(sha1_old, sha1_new)) { if (verbose) { fprintf(stderr, "* %s: same as %s\n", name, note); show_new(type, sha1_new); } return 0; } if (!strncmp(name, "refs/tags/", 10)) { fprintf(stderr, "* %s: updating with %s\n", name, note); show_new(type, sha1_new); return update_ref_env("updating tag", name, sha1_new, NULL); } current = lookup_commit_reference(sha1_old); updated = lookup_commit_reference(sha1_new); if (!current || !updated) goto just_store; strcpy(oldh, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV)); strcpy(newh, find_unique_abbrev(sha1_new, DEFAULT_ABBREV)); if (in_merge_bases(current, &updated, 1)) { fprintf(stderr, "* %s: fast forward to %s\n", name, note); fprintf(stderr, " old..new: %s..%s\n", oldh, newh); return update_ref_env("fast forward", name, sha1_new, sha1_old); } if (!force) { fprintf(stderr, "* %s: not updating to non-fast forward %s\n", name, note); fprintf(stderr, " old...new: %s...%s\n", oldh, newh); return 1; } fprintf(stderr, "* %s: forcing update to non-fast forward %s\n", name, note); fprintf(stderr, " old...new: %s...%s\n", oldh, newh); return update_ref_env("forced-update", name, sha1_new, sha1_old); } static int append_fetch_head(FILE *fp, const char *head, const char *remote, const char *remote_name, const char *remote_nick, const char *local_name, int not_for_merge, int verbose, int force) { struct commit *commit; int remote_len, i, note_len; unsigned char sha1[20]; char note[1024]; const char *what, *kind; if (get_sha1(head, sha1)) return error("Not a valid object name: %s", head); commit = lookup_commit_reference_gently(sha1, 1); if (!commit) not_for_merge = 1; if (!strcmp(remote_name, "HEAD")) { kind = ""; what = ""; } else if (!strncmp(remote_name, "refs/heads/", 11)) { kind = "branch"; what = remote_name + 11; } else if (!strncmp(remote_name, "refs/tags/", 10)) { kind = "tag"; what = remote_name + 10; } else if (!strncmp(remote_name, "refs/remotes/", 13)) { kind = "remote branch"; what = remote_name + 13; } else { kind = ""; what = remote_name; } remote_len = strlen(remote); for (i = remote_len - 1; remote[i] == '/' && 0 <= i; i--) ; remote_len = i + 1; if (4 < i && !strncmp(".git", remote + i - 3, 4)) remote_len = i - 3; note_len = 0; if (*what) { if (*kind) note_len += sprintf(note + note_len, "%s ", kind); note_len += sprintf(note + note_len, "'%s' of ", what); } note_len += sprintf(note + note_len, "%.*s", remote_len, remote); fprintf(fp, "%s\t%s\t%s\n", sha1_to_hex(commit ? commit->object.sha1 : sha1), not_for_merge ? "not-for-merge" : "", note); return update_local_ref(local_name, head, note, verbose, force); } static char *keep; static void remove_keep(void) { if (keep && *keep) unlink(keep); } static void remove_keep_on_signal(int signo) { remove_keep(); sigchain_pop(signo); raise(signo); } static char *find_local_name(const char *remote_name, const char *refs, int *force_p, int *not_for_merge_p) { const char *ref = refs; int len = strlen(remote_name); while (ref) { const char *next; int single_force, not_for_merge; while (*ref == '\n') ref++; if (!*ref) break; next = strchr(ref, '\n'); single_force = not_for_merge = 0; if (*ref == '+') { single_force = 1; ref++; } if (*ref == '.') { not_for_merge = 1; ref++; if (*ref == '+') { single_force = 1; ref++; } } if (!strncmp(remote_name, ref, len) && ref[len] == ':') { const char *local_part = ref + len + 1; int retlen; if (!next) retlen = strlen(local_part); else retlen = next - local_part; *force_p = single_force; *not_for_merge_p = not_for_merge; return xmemdupz(local_part, retlen); } ref = next; } return NULL; } static int fetch_native_store(FILE *fp, const char *remote, const char *remote_nick, const char *refs, int verbose, int force) { char buffer[1024]; int err = 0; sigchain_push_common(remove_keep_on_signal); atexit(remove_keep); while (fgets(buffer, sizeof(buffer), stdin)) { int len; char *cp; char *local_name; int single_force, not_for_merge; for (cp = buffer; *cp && !isspace(*cp); cp++) ; if (*cp) *cp++ = 0; len = strlen(cp); if (len && cp[len-1] == '\n') cp[--len] = 0; if (!strcmp(buffer, "failed")) die("Fetch failure: %s", remote); if (!strcmp(buffer, "pack")) continue; if (!strcmp(buffer, "keep")) { char *od = get_object_directory(); int len = strlen(od) + strlen(cp) + 50; keep = xmalloc(len); sprintf(keep, "%s/pack/pack-%s.keep", od, cp); continue; } local_name = find_local_name(cp, refs, &single_force, ¬_for_merge); if (!local_name) continue; err |= append_fetch_head(fp, buffer, remote, cp, remote_nick, local_name, not_for_merge, verbose, force || single_force); } return err; } static int parse_reflist(const char *reflist) { const char *ref; printf("refs='"); for (ref = reflist; ref; ) { const char *next; while (*ref && isspace(*ref)) ref++; if (!*ref) break; for (next = ref; *next && !isspace(*next); next++) ; printf("\n%.*s", (int)(next - ref), ref); ref = next; } printf("'\n"); printf("rref='"); for (ref = reflist; ref; ) { const char *next, *colon; while (*ref && isspace(*ref)) ref++; if (!*ref) break; for (next = ref; *next && !isspace(*next); next++) ; if (*ref == '.') ref++; if (*ref == '+') ref++; colon = strchr(ref, ':'); putchar('\n'); printf("%.*s", (int)((colon ? colon : next) - ref), ref); ref = next; } printf("'\n"); return 0; } static int expand_refs_wildcard(const char *ls_remote_result, int numrefs, const char **refs) { int i, matchlen, replacelen; int found_one = 0; const char *remote = *refs++; numrefs--; if (numrefs == 0) { fprintf(stderr, "Nothing specified for fetching with remote.%s.fetch\n", remote); printf("empty\n"); } for (i = 0; i < numrefs; i++) { const char *ref = refs[i]; const char *lref = ref; const char *colon; const char *tail; const char *ls; const char *next; if (*lref == '+') lref++; colon = strchr(lref, ':'); tail = lref + strlen(lref); if (!(colon && 2 < colon - lref && colon[-1] == '*' && colon[-2] == '/' && 2 < tail - (colon + 1) && tail[-1] == '*' && tail[-2] == '/')) { /* not a glob */ if (!found_one++) printf("explicit\n"); printf("%s\n", ref); continue; } /* glob */ if (!found_one++) printf("glob\n"); /* lref to colon-2 is remote hierarchy name; * colon+1 to tail-2 is local. */ matchlen = (colon-1) - lref; replacelen = (tail-1) - (colon+1); for (ls = ls_remote_result; ls; ls = next) { const char *eol; unsigned char sha1[20]; int namelen; while (*ls && isspace(*ls)) ls++; next = strchr(ls, '\n'); eol = !next ? (ls + strlen(ls)) : next; if (!memcmp("^{}", eol-3, 3)) continue; if (eol - ls < 40) continue; if (get_sha1_hex(ls, sha1)) continue; ls += 40; while (ls < eol && isspace(*ls)) ls++; /* ls to next (or eol) is the name. * is it identical to lref to colon-2? */ if ((eol - ls) <= matchlen || strncmp(ls, lref, matchlen)) continue; /* Yes, it is a match */ namelen = eol - ls; if (lref != ref) putchar('+'); printf("%.*s:%.*s%.*s\n", namelen, ls, replacelen, colon + 1, namelen - matchlen, ls + matchlen); } } return 0; } static int pick_rref(int sha1_only, const char *rref, const char *ls_remote_result) { int err = 0; int lrr_count = lrr_count, i, pass; const char *cp; struct lrr { const char *line; const char *name; int namelen; int shown; } *lrr_list = lrr_list; for (pass = 0; pass < 2; pass++) { /* pass 0 counts and allocates, pass 1 fills... */ cp = ls_remote_result; i = 0; while (1) { const char *np; while (*cp && isspace(*cp)) cp++; if (!*cp) break; np = strchrnul(cp, '\n'); if (pass) { lrr_list[i].line = cp; lrr_list[i].name = cp + 41; lrr_list[i].namelen = np - (cp + 41); } i++; cp = np; } if (!pass) { lrr_count = i; lrr_list = xcalloc(lrr_count, sizeof(*lrr_list)); } } while (1) { const char *next; int rreflen; int i; while (*rref && isspace(*rref)) rref++; if (!*rref) break; next = strchrnul(rref, '\n'); rreflen = next - rref; for (i = 0; i < lrr_count; i++) { struct lrr *lrr = &(lrr_list[i]); if (rreflen == lrr->namelen && !memcmp(lrr->name, rref, rreflen)) { if (!lrr->shown) printf("%.*s\n", sha1_only ? 40 : lrr->namelen + 41, lrr->line); lrr->shown = 1; break; } } if (lrr_count <= i) { error("pick-rref: %.*s not found", rreflen, rref); err = 1; } rref = next; } free(lrr_list); return err; } int cmd_fetch__tool(int argc, const char **argv, const char *prefix) { int verbose = 0; int force = 0; int sopt = 0; while (1 < argc) { const char *arg = argv[1]; if (!strcmp("-v", arg)) verbose = 1; else if (!strcmp("-f", arg)) force = 1; else if (!strcmp("-s", arg)) sopt = 1; else break; argc--; argv++; } if (argc <= 1) return error("Missing subcommand"); if (!strcmp("append-fetch-head", argv[1])) { int result; FILE *fp; char *filename; if (argc != 8) return error("append-fetch-head takes 6 args"); filename = git_path("FETCH_HEAD"); fp = fopen(filename, "a"); if (!fp) return error("cannot open %s: %s\n", filename, strerror(errno)); result = append_fetch_head(fp, argv[2], argv[3], argv[4], argv[5], argv[6], !!argv[7][0], verbose, force); fclose(fp); return result; } if (!strcmp("native-store", argv[1])) { int result; FILE *fp; char *filename; if (argc != 5) return error("fetch-native-store takes 3 args"); filename = git_path("FETCH_HEAD"); fp = fopen(filename, "a"); if (!fp) return error("cannot open %s: %s\n", filename, strerror(errno)); result = fetch_native_store(fp, argv[2], argv[3], argv[4], verbose, force); fclose(fp); return result; } if (!strcmp("parse-reflist", argv[1])) { const char *reflist; if (argc != 3) return error("parse-reflist takes 1 arg"); reflist = argv[2]; if (!strcmp(reflist, "-")) reflist = get_stdin(); return parse_reflist(reflist); } if (!strcmp("pick-rref", argv[1])) { const char *ls_remote_result; if (argc != 4) return error("pick-rref takes 2 args"); ls_remote_result = argv[3]; if (!strcmp(ls_remote_result, "-")) ls_remote_result = get_stdin(); return pick_rref(sopt, argv[2], ls_remote_result); } if (!strcmp("expand-refs-wildcard", argv[1])) { const char *reflist; if (argc < 4) return error("expand-refs-wildcard takes at least 2 args"); reflist = argv[2]; if (!strcmp(reflist, "-")) reflist = get_stdin(); return expand_refs_wildcard(reflist, argc - 3, argv + 3); } return error("Unknown subcommand: %s", argv[1]); }
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