| /* |
| * GIT - the stupid content tracker |
| * |
| * Copyright (c) Junio C Hamano, 2006, 2009 |
| */ |
| #include "builtin.h" |
| #include "quote.h" |
| #include "tree.h" |
| #include "parse-options.h" |
| |
| static struct treeent { |
| unsigned mode; |
| unsigned char sha1[20]; |
| int len; |
| char name[FLEX_ARRAY]; |
| } **entries; |
| static int alloc, used; |
| |
| static void append_to_tree(unsigned mode, unsigned char *sha1, char *path) |
| { |
| struct treeent *ent; |
| int len = strlen(path); |
| if (strchr(path, '/')) |
| die("path %s contains slash", path); |
| |
| ALLOC_GROW(entries, used + 1, alloc); |
| ent = entries[used++] = xmalloc(sizeof(**entries) + len + 1); |
| ent->mode = mode; |
| ent->len = len; |
| hashcpy(ent->sha1, sha1); |
| memcpy(ent->name, path, len+1); |
| } |
| |
| static int ent_compare(const void *a_, const void *b_) |
| { |
| struct treeent *a = *(struct treeent **)a_; |
| struct treeent *b = *(struct treeent **)b_; |
| return base_name_compare(a->name, a->len, a->mode, |
| b->name, b->len, b->mode); |
| } |
| |
| static void write_tree(unsigned char *sha1) |
| { |
| struct strbuf buf; |
| size_t size; |
| int i; |
| |
| qsort(entries, used, sizeof(*entries), ent_compare); |
| for (size = i = 0; i < used; i++) |
| size += 32 + entries[i]->len; |
| |
| strbuf_init(&buf, size); |
| for (i = 0; i < used; i++) { |
| struct treeent *ent = entries[i]; |
| strbuf_addf(&buf, "%o %s%c", ent->mode, ent->name, '\0'); |
| strbuf_add(&buf, ent->sha1, 20); |
| } |
| |
| write_sha1_file(buf.buf, buf.len, tree_type, sha1); |
| strbuf_release(&buf); |
| } |
| |
| static const char *mktree_usage[] = { |
| N_("git mktree [-z] [--missing] [--batch]"), |
| NULL |
| }; |
| |
| static void mktree_line(char *buf, size_t len, int line_termination, int allow_missing) |
| { |
| char *ptr, *ntr; |
| unsigned mode; |
| enum object_type mode_type; /* object type derived from mode */ |
| enum object_type obj_type; /* object type derived from sha */ |
| char *path; |
| unsigned char sha1[20]; |
| |
| ptr = buf; |
| /* |
| * Read non-recursive ls-tree output format: |
| * mode SP type SP sha1 TAB name |
| */ |
| mode = strtoul(ptr, &ntr, 8); |
| if (ptr == ntr || !ntr || *ntr != ' ') |
| die("input format error: %s", buf); |
| ptr = ntr + 1; /* type */ |
| ntr = strchr(ptr, ' '); |
| if (!ntr || buf + len <= ntr + 40 || |
| ntr[41] != '\t' || |
| get_sha1_hex(ntr + 1, sha1)) |
| die("input format error: %s", buf); |
| |
| /* It is perfectly normal if we do not have a commit from a submodule */ |
| if (S_ISGITLINK(mode)) |
| allow_missing = 1; |
| |
| |
| *ntr++ = 0; /* now at the beginning of SHA1 */ |
| |
| path = ntr + 41; /* at the beginning of name */ |
| if (line_termination && path[0] == '"') { |
| struct strbuf p_uq = STRBUF_INIT; |
| if (unquote_c_style(&p_uq, path, NULL)) |
| die("invalid quoting"); |
| path = strbuf_detach(&p_uq, NULL); |
| } |
| |
| /* |
| * Object type is redundantly derivable three ways. |
| * These should all agree. |
| */ |
| mode_type = object_type(mode); |
| if (mode_type != type_from_string(ptr)) { |
| die("entry '%s' object type (%s) doesn't match mode type (%s)", |
| path, ptr, typename(mode_type)); |
| } |
| |
| /* Check the type of object identified by sha1 */ |
| obj_type = sha1_object_info(sha1, NULL); |
| if (obj_type < 0) { |
| if (allow_missing) { |
| ; /* no problem - missing objects are presumed to be of the right type */ |
| } else { |
| die("entry '%s' object %s is unavailable", path, sha1_to_hex(sha1)); |
| } |
| } else { |
| if (obj_type != mode_type) { |
| /* |
| * The object exists but is of the wrong type. |
| * This is a problem regardless of allow_missing |
| * because the new tree entry will never be correct. |
| */ |
| die("entry '%s' object %s is a %s but specified type was (%s)", |
| path, sha1_to_hex(sha1), typename(obj_type), typename(mode_type)); |
| } |
| } |
| |
| append_to_tree(mode, sha1, path); |
| } |
| |
| int cmd_mktree(int ac, const char **av, const char *prefix) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| unsigned char sha1[20]; |
| int line_termination = '\n'; |
| int allow_missing = 0; |
| int is_batch_mode = 0; |
| int got_eof = 0; |
| |
| const struct option option[] = { |
| OPT_SET_INT('z', NULL, &line_termination, N_("input is NUL terminated"), '\0'), |
| OPT_SET_INT( 0 , "missing", &allow_missing, N_("allow missing objects"), 1), |
| OPT_SET_INT( 0 , "batch", &is_batch_mode, N_("allow creation of more than one tree"), 1), |
| OPT_END() |
| }; |
| |
| ac = parse_options(ac, av, prefix, option, mktree_usage, 0); |
| |
| while (!got_eof) { |
| while (1) { |
| if (strbuf_getline(&sb, stdin, line_termination) == EOF) { |
| got_eof = 1; |
| break; |
| } |
| if (sb.buf[0] == '\0') { |
| /* empty lines denote tree boundaries in batch mode */ |
| if (is_batch_mode) |
| break; |
| die("input format error: (blank line only valid in batch mode)"); |
| } |
| mktree_line(sb.buf, sb.len, line_termination, allow_missing); |
| } |
| if (is_batch_mode && got_eof && used < 1) { |
| /* |
| * Execution gets here if the last tree entry is terminated with a |
| * new-line. The final new-line has been made optional to be |
| * consistent with the original non-batch behaviour of mktree. |
| */ |
| ; /* skip creating an empty tree */ |
| } else { |
| write_tree(sha1); |
| puts(sha1_to_hex(sha1)); |
| fflush(stdout); |
| } |
| used=0; /* reset tree entry buffer for re-use in batch mode */ |
| } |
| strbuf_release(&sb); |
| exit(0); |
| } |